. 赤部分修正 2. 背表紙の厚さを設定する。（表裏両方） HIOKI USA CORPORATION 6 Corporate Drive, Cranbury, NJ 08512, USA TEL +1-609-409-9109 / FAX +1-609-409-9108 8826A981-12 06-12H Printed on recycled paper INSTRUCTION MANUAL HEAD OFFICE 81 Koizumi, Ueda, Nagano 386-1192, Japan TEL +81-268-28-0562 / FAX +81-268-28-0568 E-mail: os-com@hioki.co.jp/ URL http://www.hioki.co.jp/ 8826 MEMORY HiCORDER 3. 背表紙の厚さに合わせて形名・品名の幅を調整 する。 4. Acobat Distiller で、用紙に「12mm 超表紙」を選 択して PDF ファイルを作成する。 （モノクロにすることを忘れないように） 5. 作成した PDF ファイルを 「¥¥172.
Contents Introduction i Inspection i Safety Notes iii Notes on Use v Chapter Summary x Chapter 1 Product Overview 1 1.1 Major Features 2 1.2 Names and Function of Parts 4 Chapter 2 Installation and Preparation 9 2.1 Installation of the Unit 9 2.2 Power Supply and Ground Connection 11 2.3 Power On/Off 13 2.4 Connection of the Input Unit 14 2.4.1 8936 ANALOG UNIT / 8938 FFT ANALOG UNIT 14 2.4.2 8937 VOLTAGE/TEMP UNIT 15 2.4.3 8939 STRAIN UNIT 16 2.4.4 8940 F/V UNIT 17 2.4.
3.3 Other Keys Operation 36 3.4 Screen Configuration 37 3.5 Using the Key Lock Function 38 Chapter 4 Memory Recorder Function 39 4.1 Outline of the Memory Recorder Function 40 4.2 Operation Sequence (MEM) 42 4.3 STATUS Settings (MEM) 44 4.3.1 Setting the Function Mode 44 4.3.2 Setting the Time Axis Range 45 4.3.3 Setting the Recording Length 46 4.3.4 Setting the Format 48 4.3.5 Setting the Display Size 51 4.3.6 Setting the Interpolation (dot-line) 51 4.3.
.3.9 Setting the Printer Function (Real Time Printing) 86 5.3.10 Setting the Auto Save Function 87 5.3.11 Setting the Interpolation (dot-line, X-Y only) 89 5.3.12 Setting the Display Clear Function (X-Y only) 89 5.4 Using the X-Y CONT Recorder 90 5.5 Settings on the Display Screen (REC) 93 5.6 Start and Stop Operation (REC) 94 Chapter 6 RMS Recorder Function 95 6.1 Outline of the RMS Recorder Function 96 6.2 Operation Sequence (RMS) 98 6.3 STATUS Settings (RMS) 100 6.3.
7.3.11 Setting the Real-Time Save 7.4 STATUS2 Settings (REC&MEM) 135 140 7.4.1 Using the Sequential Save Function 140 7.5 Settings on the Display Screen (REC&MEM) 141 7.6 Start and Stop Operation (REC&MEM) 142 Chapter 8 FFT Function 143 8.1 Outline of the FFT Function 143 8.2 Operation Sequence (FFT) 144 8.3 STATUS1 Settings (FFT) 146 8.3.1 Setting the Function Mode 146 8.3.2 Setting the FFT Channel Mode 147 8.3.3 Setting the Frequency Range 148 8.3.
8.7.7 Transfer Function [TRF] 182 8.7.8 Cross Power Spectrum [CSP] 184 8.7.9 Cross Correlation [CCR] 186 8.7.10 Unit Impulse Response [IMP] 187 8.7.11 Coherence [COH] 188 8.7.12 Octave Analysis [OCT] 190 Chapter 9 Input Channel Settings 193 9.1 Setting Items for Input Channel 193 9.2 Input Channel Setting Procedure 194 9.3 Setting the CHANNEL1 Screen 196 9.3.1 Setting the Waveform Display Color 197 9.3.2 Setting the Waveform Display Graph Position 198 9.3.
9.10 Setting the 8937 VOLTAGE/TEMP UNIT 231 9.10.1 Making the Settings of Voltage Measurement 232 9.10.2 Making the Settings of Temperature Measurement 234 9.11 Setting the 8938 FFT ANALOG UNIT 237 9.12 Setting the 8939 STRAIN UNIT 238 9.13 Setting the 8940 F/V UNIT 240 9.13.1 Setting Frequency Mode 241 9.13.2 Setting the Count Mode 245 9.13.3 Setting the Pulse Duty Ratio Mode 247 9.13.4 Setting the Voltage Mode 249 9.13.5 Setting the Current Mode 251 9.
Chapter 11 Display Screen Operation 293 11.1 Scrolling the Waveform 294 11.2 Using the A/B Cursors 295 11.2.1 Using the Line Cursors (Vertical) 296 11.2.2 Using the Line Cursors (Horizontal) 298 11.2.3 Using the Trace Cursors 300 11.2.4 Using the A/B Cursors (X-Y Screen) 302 11.3 The Magnification/Compression Ratio Along the Time Axis 303 11.4 Zoom Function 304 11.5 Input Level Monitor Function 306 11.6 View Function (VIEW key) 307 Chapter 12 SYSTEM Screen Settings 311 12.
12.6 INITIALIZE Screen 328 12.6.1 TIME SET (Setting the Clock) 328 12.6.2 WAVE DATA CLEAR (DATA INITIALIZE) 329 12.6.3 SYSTEM RESET 329 12.6.4 System Information 329 12.7 SELF CHECK 330 12.7.1 ROM/RAM CHECK 330 12.7.2 PRINTER CHECK 330 12.7.3 DISPLAY CHECK 331 12.7.4 KEY CHECK 331 12.7.5 PC CARD CHECK 332 Chapter 13 Printout of Measurement Data 333 13.1 Printout of Measurement Data Operating Procedure 334 13.2 Setting the STATUS Screen (printout) 336 13.2.
14.2.1 Setting the MO Drive 14.3 PC Card 366 367 14.3.1 Using the PC Card Slot (PC Card with a Cable Only) 368 14.4 SCSI Interface 369 14.4.1 SCSI Interface Specifications 369 14.4.2 Setting the MO Drive 370 14.4.3 Setting the SCSI Number 371 14.5 Selecting the Media Type 372 14.6 FORMAT (Initializing) 373 14.7 SAVE 375 14.7.1 Setting the Saving Items 377 14.7.2 Text data store example 382 14.8 LOAD 384 14.9 INFO 388 14.10 DELETE 389 14.11 Sorting File (SORT) 391 14.
16.2.6 Perform Waveform Processing 16.3 Waveform GO/NG Evaluation 428 430 16.3.1 Setting the Evaluation Area 432 16.3.2 Setting the Waveform Evaluation Mode 434 16.3.3 Setting the GO/NG Stop Mode 435 16.3.4 Creating the Evaluation Area 436 16.3.5 Editor Command Details 437 Chapter 17 External Input/Output Terminals 445 17.1 Connecting the Terminals 445 17.2 External Trigger Input Terminal [EXT TRIG] 447 17.3 External Trigger Output Terminal [TRIG OUT] 448 17.
19.2.4 8939 STRAIN UNIT 479 19.2.5 8940 F/V UNIT 480 19.2.6 8947 CHARGE UNIT 482 Chapter 20 Maintenance and Service 485 20.1 Maintenance and Inspection 485 20.2 Unit Replacement Procedure 487 20.3 Adding the 9599 MEMORY BOARD 488 20.4 Removing the Battery Before Discarding the Unit 489 20.5 Troubleshooting 490 Chapter 21 Appendix 491 21.1 Error Messages 491 21.2 Glossary 496 21.3 Reference 498 21.3.1 Sampling 498 21.3.2 Aliasing 498 21.3.3 Measurement Limit Frequency 499 21.
i ──────────────────────────────────────────────────── Introduction Thank you for purchasing the HIOKI "8826 MEMORY HiCORDER". To obtain maximum performance from the instrument, please read this manual first, and keep it handy for future reference. Inspection ・When you receive the instrument, inspect it carefully to ensure that no damage occurred during shipping. In particular, check the accessories, panel switches, and connectors.
ii ──────────────────────────────────────────────────── Options 8936 ANALOG UNIT 8937 VOLTAGE/TEMP UNIT 8938 FFT ANALOG UNIT 8939 STRAIN UNIT 8940 F/V UNIT 8947 CHARGE UNIT 9557 RS-232C CARD 9558 GP-IB CARD 9559 PRINTER CARD 9578 10BASE-T LAN CARD 9626 PC CARD 32M 9627 PC CARD 64M 9726 PC CARD 128M 9727 PC CARD 256M 9728 PC CARD 512M 9729 PC CARD 1G 9598 MO UNIT 9599 MEMORY BOARD（48 M words） 9229 RECORDING PAPER (6 rolls) 9229-01 RECORDING PAPER（PERFORATED）(6 rolls) 9197 CONNECTION CORD (for high voltage,
iii ──────────────────────────────────────────────────── Safety Notes WARNING This instrument is designed to comply with IEC 61010 Safety Standards, and has been thoroughly tested for safety prior to shipment. However, mishandling during use could result in injury or death, as well as damage to the instrument Be certain that you understand the instructions and precautions in the manual before use. We disclaim any responsibility for accidents or injuries not resulting directly from instrument defects.
iv ──────────────────────────────────────────────────── Conventions used in this manual The following symbols in this manual indicate the relative importance of cautions and warnings. DANGER Indicates that incorrect operation presents an extreme hazard that could result in serious injury or death to the user. WARNING Indicates that incorrect operation presents a significant hazard that could result in serious injury or death to the user.
v ──────────────────────────────────────────────────── Notes on Use Follow these precautions to ensure safe operation and to obtain the full benefits of the various functions. DANGER ■ Probe Connection, Measurement Voltage Input Maximum input voltage ratings for the input units and the input terminals of the 8826 are shown below. To avoid the risk of electric shock and damage to the units, take care not to exceed these ratings.
vi ──────────────────────────────────────────────────── DANGER The external I/O terminal and the unit have a common GND. The maximum rated voltage to earth rating applies also if an input attenuator or similar is used. Ensure that voltage does not exceed these ratings. When measuring power line voltages with the 8936 or 8938, always connect the probe to the secondary side of the circuit breaker. Connection to the primary side involves the risk of electric shock and damage to the units.
vii ──────────────────────────────────────────────────── WARNING ■ Replacing the input units ･ To avoid electric shock accident, before removing or replacing an input module, confirm that the instrument is turned off and that the power cord, connection cords, and thermocouples are disconnected. ･ To avoid the danger of electric shock, never operate the instrument with an input module removed.
viii ──────────────────────────────────────────────────── CAUTION ■ Installation environment ･ This instrument should be installed and operated indoors only, between 5 and 40℃ and 35 to 80% RH. ･ Do not store or use the instrument where it could be exposed to direct sunlight, high temperature or humidity, or condensation. Under such conditions, the instrument may be damaged and insulation may deteriorate so that it no longer meets specifications.
ix ──────────────────────────────────────────────────── NOTE ■ Using a printer ･ Avoid using the printer in hot, humid environments, as this can greatly reduce printer life. ■ Recording paper ･ This unit uses a thermal printer. The recording paper supplied has characteristics finely tuned for use with the printer. Using recording paper of a different specification may not only result in impaired printing quality, but even prevent the printer from operating. Always use the HIOKI specified instrument.
x ──────────────────────────────────────────────────── Chapter Summary Chapter 1 Product Overview Contains an overview of the unit and its features. Chapter 2 Installation and Preparation Explains how to set the unit up for measurement. Chapter 3 Basic Key Operation Explains how to operate the keys and the JOG/SHUTTLE control for carrying out basic measurement functions. Chapter 4 Memory Recorder Function Explains how to use the memory recorder functions of the unit.
xi ──────────────────────────────────────────────────── Chapter 16 Waveform Operation Function Explains how to use the Calculating, Waveform Parameters/Evaluating Parameter value and Waveform GO/NG Evaluation. Chapter 17 External Input/Output Terminals Gives specifications and usage details of the external input/output terminals, and explains how to use the key lock function. Chapter 18 Specifications Contains general specifications and detailed function specifications.
xii ──────────────────────────────────────────────────── ──────────────────────────────────────────────────── Chapter Summary
1 ──────────────────────────────────────────────────── 1 Chapter 1 2 Product Overview 3 4 5 6 7 8 9 10 11 12 13 14 A ────────────────────────────────────────────────────
2 ──────────────────────────────────────────────────── 1.1 Major Features (1) Powerful waveform capture capability ・Using the analog unit 8936 (unbalanced), waveform recording can be performed in up to 32 channels with 12-bit resolution. (2) Easy to read, TFT color display ・The 10.4-inch TFT color screen with a resolution of 640 × 480 dots shows all information at a glance.
3 ──────────────────────────────────────────────────── (12) The floppy-disk drive, MO drive (option), and PC card can be used as external storage means. ・The waveform data and/or setup conditions can be stored on a floppy disk, MO disk, or PC card (SRAM, flash ATA, or HDD card). (13) SCSI and PC card slots are originally equipped as external interfaces. ・If a MO drive is connected to the SCSI interface, the waveform data and/or setup conditions can be stored on a MO disk.
4 ──────────────────────────────────────────────────── 1.2 Names and Function of Parts 11 12 13 1 6 2 7 3 8 4 9 5 10 16 25 33 26 27 28 14 15 17 18 19 20 21 22 23 29 24 30 32 31 1 SYSTEM key ･ Causes the display to show the SYSTEM screen which serves for making system-wide settings such as for the scaling function. 2 STATUS key ･ Causes the display to show the STATUS screen which serves for setting most measurement parameters.
5 ──────────────────────────────────────────────────── 10 HELP key ･ Provides on-line help. 11 VALUE key ･ Uses to set numerical values 12 WAVE key ･ Uses to scroll the waveform. 13 A･B CSR key ･ Uses to move the A/B cursor. 14 JOG ･ Rotary control knob that serves to change values, move the A/B cursors, and scroll the waveform. 15 SHUTTLE ･ Concentric ring that serves to move the A/B cursors, and to scroll the waveform. The speed of movement is proportional to the rotation angle.
6 ──────────────────────────────────────────────────── 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 Input unit slots ･ These slots accept input units. 2 Analog input connector ･ Unbalanced analog input. (on ANALOG UNIT) 3 Logic probe connectors ･ Input connector for the logic input section, designed for the dedicate logic probes (CH A to H). 4 KEY LOCK switch ･ When this switch is set to ON, all keys of the 8826 are inactive.
7 ──────────────────────────────────────────────────── 2 1 3 4 2 1 2 3 4 Right side Left side 5 6 7 8 9 5 6 7 8 Upper Bottom 1 Handle 2 Ventilation slots 3 Blowing slot 4 Terminal guard ･ Guard to the analog input connectors. 5 Printer 6 Stand ･ The unit can also be propped up at an angle using the stand. 7 Bottom case ･ Use to attach the 9599 MEMORY BOARD. 8 A laser warning label ･ Serves for transporting the 8826.
8 ──────────────────────────────────────────────────── ──────────────────────────────────────────────────── 1.
9 ──────────────────────────────────────────────────── 1 Chapter 2 2 Installation and Preparation 3 4 5 2.1 Installation of the Unit Installation orientation Install the unit on a flat, level surface. The unit can also be propped up at an angle, using the stand. 6 7 8 9 10 11 12 13 14 NOTE ・The terminal guard protects the input connectors of the equipment from damages. Do not stand the equipment on this guard; otherwise, the equipment may be damaged.
10 ──────────────────────────────────────────────────── Ambient conditions (1) Temperature 5 to 40℃, 23±5℃ recommended for high-precision measurements. (2) Humidity 35 to 80%RH (no condensation); 50±10%RH (no condensation) recommended for high-precision measurements. (3) Ventilation Avoid obstructing the ventilation holes on the sides of the 8826, as it could overheat and be damaged, or cause a fire.
11 ──────────────────────────────────────────────────── 2.2 Power Supply and Ground Connection WARNING Check the following points before connecting the unit to a power supply. Take care never to exceed the power supply ratings given below, to avoid the risk of electric shock and damage to the unit. Power supply matches Rated supply voltage (100 to 240 V AC: Voltage fluctuations of 10% from the rated supply voltage are taken into account.) and rated supply frequency (50/60 Hz).
12 ──────────────────────────────────────────────────── Function Ground Terminal When measuring in a "noisy " environment, noiseproofing can be improved by grounding the function ground terminal. Function ground terminal ──────────────────────────────────────────────────── 2.
13 ──────────────────────────────────────────────────── 2.3 Power On/Off WARNING Check the following points before the power switch is turned on. Power supply matches Rated supply voltage (100 to 240 VAC: Voltage fluctuations of 10% from the rated supply voltage are taken into account.) and rated supply frequency (50/60 Hz). The Unit is correctly installed (Section 2.1). Power cord is correctly connected. The unit is properly grounded (Section 2.2).
14 ──────────────────────────────────────────────────── 2.4 Connection of the Input Unit 2.4.1 8936 ANALOG UNIT / 8938 FFT ANALOG UNIT WARNING ・Never connect the probe to the 8826 while the probe is already connected to the measurement object. Otherwise there is a risk of electric shock. ・Be sure to use the input cord specified by HIOKI for 8826. An insulated BNC is used to prevent electric shock.
15 ──────────────────────────────────────────────────── 2.4.2 8937 VOLTAGE/TEMP UNIT WARNING CAUTION 1 ・Never connect the probe to the 8826 while the probe is already connected to the measurement object. Otherwise there is a risk of electric shock. 2 ・A common GND is used for voltage and temperature input on all channels. Never input voltage and temperature simultaneously, since doing so could result in damage to the sample being tested.
16 ──────────────────────────────────────────────────── 2.4.3 8939 STRAIN UNIT CAUTION ・Connect only the sensor to the conversion cable supplied with the 8939 STRAIN UNIT. ・To disconnect the conversion cable, always unlock the plug and pull out the cable. ■ Connecting to the main unit (1) Align the projection on the unit connector with the cutout on the conversion cable, and insert the plug into the connector.
17 ──────────────────────────────────────────────────── 2.4.4 8940 F/V UNIT DANGER WARNING CAUTION To avoid electrical accidents, make sure that the MEMORY HiCORDER and the equipment being measured are powered off before making connections. Do not make connections with the power turned on. When using the 9318, 9319 CONVERSION CABLE, there is no isolation between GND the MEMORY HiCORDER and GND of the clamp on sensor/probe.
18 ──────────────────────────────────────────────────── (1) Connecting to 9318 CONVERSION CABLE The MEMORY HiCORDER and the equipment being measured are powered off before making connections. Align the groove on the conversion cable plug with the sensor connector on the F/V unit and push inward until the connector locks into place. Align the groove on the conversion cable connector with the adapted clamp on sensor plug and push inward until the connector locks into place.
19 ──────────────────────────────────────────────────── (2) Connecting to 9319 CONVERSION CABLE The MEMORY HiCORDER and the equipment being measured are powered off before making connections. Align the groove on the 3273 or 3273-50*1 CLAMP ON PROBE’s termination connector with the pin on the BNC connector on the F/V unit, then slide the termination connector over the BNC connector and turn to lock it in place.
20 ──────────────────────────────────────────────────── 2.4.5 8947 CHARGE UNIT WARNING ・Never connect the connection cable to the unit while it is connected to the measurement object, to avoid electric shock. ・The BNC connectors for each channel and the miniature connection terminals share a common ground. Do not connect both types of terminals at the same time. ・When the PREAMP measurement mode is selected, voltage (15 V at 2 mA) is applied internally to the BNC connector when measurement starts.
21 ──────────────────────────────────────────────────── ■Connecting a Charge-Output Type Acceleration Sensor (CHARGE mode) Use a cable with a plug to mate with the miniature connector to connect the pickup sensor to the unit in CHARGE mode (10-32 miniature connection terminal). (1) Insert the miniature connector plug into the miniature connector on the unit, and turn it clockwise until tight. (2) To remove the miniature connector, turn the plug counterclockwise.
22 ──────────────────────────────────────────────────── 2.5 Logic Probe Connection DANGER The logic input and 8826 Unit share a common ground. Therefore, if power is supplied to the measurement object of the logic probe and to the 8826 from different sources, an electric shock or damage to the equipment may result.
23 ──────────────────────────────────────────────────── 2.6 9018-10, 9132-10 CLAMP ON PROBE Connection Clamp-on probe should only be connected to the secondary side of a breaker, so the breaker can prevent an accident if a short circuit occurs. Connections should never be made to the primary side of a breaker, because unrestricted current flow could cause a serious accident if a short circuit occurs.
24 ──────────────────────────────────────────────────── 2.8 Loading Recording Paper (1) Press the stock cover and open it. Stock cover (2) Raise the head up/down lever. Head up/down lever Attachment (3) Insert the attachments into the ends of the roll of recording paper and set the paper into its holder. Holder Printer roller (4) Insert the leading edge of the recording paper from above into the gap behind the printer roller, and pull it out to the other side.
25 ──────────────────────────────────────────────────── (5) Pull the end of the recording paper out at least 10 cm, and make sure that it is positioned quite straight. (6) Put down the head up/down lever. (7) Pull the recording paper to the outside through the printer exit slot in the stock cover. (8) Close the stock cover, and finish by tearing off the recording paper against the edge of the printer exit slot. NOTE ･ The paper may jam if it is not aligned with the roller.
26 ──────────────────────────────────────────────────── 2.9 Care of Recording Paper Care of recording paper ・While unopened, thermal paper will not be affected by the environment, provided that ambient temperature and humidity do not exceed normal levels. For long-term storage, temperature should be lower than 40. Low temperatures cause no problem. ・After opening, protect the paper from strong light, to prevent discoloration. Storing data The recording paper uses a thermochemical reaction.
27 ──────────────────────────────────────────────────── 2.10 Notes on Measurement DANGER Maximum input voltage ratings for the input units and the input terminals of the 8826 are shown below. To avoid the risk of electric shock and damage to the units, take care not to exceed these ratings. The maximum rated voltage to earth of the input units (voltage between input terminals and 8826 frame ground, and between inputs of other analog units) is shown below.
28 ──────────────────────────────────────────────────── WARNING To avoid electric shock accident, before removing or replacing an input module, confirm that the instrument is turned off and that the power cord, connection cords, and thermocouples are disconnected. To avoid the danger of electric shock, never operate the product with an input module removed. To use the product after removing an input module, install a blank panel over the opening of the removed module.
29 ──────────────────────────────────────────────────── Difference between "370 V AC, DC" and "400 V DC max." indication 370 V AC, DC: RMS value is displayed. 400 V DC max.: Instantaneous value is displayed. The maximum input voltage (400 V DC max.) is defined as the superposition of DC component and AC peak, as shown in the figure below. AC DC DC+AC +400 V DC 0 -400 V DC ──────────────────────────────────────────────────── 2.
30 ──────────────────────────────────────────────────── 2.10.
31 ──────────────────────────────────────────────────── 2.10.2 Using a Voltage Transformer When making measurements on an AC power line for example, using a voltage transformer, be sure to connect the voltage transformer ground terminal to ground.
32 ──────────────────────────────────────────────────── ──────────────────────────────────────────────────── 2.
33 ──────────────────────────────────────────────────── 1 Chapter 3 2 Basic Key Operation 3 4 5 3.1 Basic Key Operation 3.1.1 Basic Display Operation ( MENU ) 6 7 SYSTEM key Calls up the SYSTEM screen. Serves to switch pages of the SYSTEM screen. Serves to make common settings for all functions (clock setting, comment input, etc.) on the SYSTEM screen. 8 STATUS key Calls up the STATUS screen. Serves to switch pages of the STATUS screen.
34 ──────────────────────────────────────────────────── 3.1.2 Printer Key Operation PRINT key Serves to print out the waveform. Output destination by the PRINT key can be selected. See Section 12.5.2. COPY key Produces a hard copy of the display content. Copy destination by the COPY key can be selected. See Section 12.5.1. FEED key Forwards the paper while the key is held down. 3.1.3 Setting Items (Function key) The respective items are shown in the function key display. Select and set the items.
35 ──────────────────────────────────────────────────── 1 3.1.5 Basic Input Operation Set the basic settings for analog channels. See Chapter 9. to CH&NUM key Sets channels or inputs numerical values ・Channel parameters can be directly input using the POSITION and the RANGE keys. ・In numerical-value input, these keys are used as numeric keys. POSITION key Determines the zero position of the channel set using the CH&NUM keys. In numerical-value input, "-" and "+" can be input.
36 ──────────────────────────────────────────────────── 3.3 Other Keys Operation MANU TRIG key When the unit is in trigger standby mode, pressing this key causes manual triggering. See section 10.12. CH. SET key Enables the measurement conditions for each channel on the display screen to be set or changed. The setup can be performed even during startup. (However, it is disabled during parameter operation setting.
37 ──────────────────────────────────────────────────── 1 3.4 Screen Configuration 2 SET UP SCALING 3 COMMENT INTERFACE INITIALIZE 4 SELF CHECK On the Display screen, press the DISP key to toggle between normal-screen display and wide-screen display. From the System screen, click the SYSTEM key to move between the setting screens. STATUS 5 MEMORY DIV PARAMETER CALCULATION WAVEFORM CALCULATION The input channel can be set. Press the CH.SET key to change the input channel setting screen.
38 ──────────────────────────────────────────────────── 3.5 Using the Key Lock Function ・This function disables all front-panel controls of the 8826. ・The function serves to prevent unintended changes to settings during a measurement. Method (1) Set the KEY LOCK switch to ON. (2) To cancel the function, set the KEY LOCK switch to OFF. (The key lock function will not be canceled by turning the power off and on.) ・When the key lock function is active, the indication "KEY LOCK" is shown on the display.
39 ──────────────────────────────────────────────────── 1 Chapter 4 2 Memory Recorder Function 3 4 5 6 7 8 9 10 11 12 13 14 A ────────────────────────────────────────────────────
40 ──────────────────────────────────────────────────── 4.1 Outline of the Memory Recorder Function The memory recorder function has the following features. (1) After being stored in the internal memory, input signal data can be displayed and printed. (2) All input channel data are recorded on the same time axis. Since data for all channels can be superimposed, the relative relationship between input signals can be observed visually.
41 ──────────────────────────────────────────────────── (13) Averaging 1 This makes it possible to eliminate noise and irregular signal components. (14) Waveform evaluation function detects abnormal waveforms. 2 3 4 5 6 7 8 9 10 11 12 13 14 A ──────────────────────────────────────────────────── 4.
42 ──────────────────────────────────────────────────── 4.2 Operation Sequence (MEM) Preparation 測定の準備を行います ・See Chapter 2. Installation of the Unit Turn on the power Connect the inputs Setting Setting the the STATUS1 STATUS1 screen screen ・Press the STATUS key to call up the STATUS screen. ・See Section 4.3. Select the function See Section 4.3.1. ・Select the memory recorder function. Time axis range See Section 4.3.2. ・Determine the speed with which the input signal waveform is captured.
43 ──────────────────────────────────────────────────── 1 Advanced Advanced function function Memory segmentation Sequential Save Function ・See Chapter 15. 2 Multi-Block Function Waveform operation Function ・See Chapter 16. 3 Waveform parameter calculation Calculatiing Waveform Data Setting Setting the the CHANNEL CHANNEL Screen Screen 4 ・Set the waveform display color for each channel, measurement range, input coupling, zero position, and filter. See Chapter 9.
44 ──────────────────────────────────────────────────── 4.3 STATUS Settings (MEM) 4.3.1 Setting the Function Mode Method Method Screen: STATUS1, CHANNEL, DISPLAY Call up the STATUS1, CHANNEL or DISPLAY screen. Move the flashing cursor to the position shown in the figure on the left. Press the F1 [ MEMORY ]. Selection Selection ：Memory recorder function ：Recorder function ：RMS recorder function ：Reccorder and Memory function ：FFT function ──────────────────────────────────────────────────── 4.
45 ──────────────────────────────────────────────────── 1 4.3.2 Setting the Time Axis Range ・Set the speed for inputting and storing the waveform of the input signal. ・Time axis range setting expresses the time for 1 DIV. ・The sampling period is 1/100th of the set value for the time axis range. (100 samples/DIV) Method-1 Method Screen: STATUS1, DISPLAY Call up the STATUS1 or DISPLAY screen. Move the flashing cursor to the time/div item, as shown in the figure on the left.
46 ──────────────────────────────────────────────────── 4.3.3 Setting the Recording Length ・The length of recording for one measurement operation (number of DIV) can be set. SELECT： Select the recording length. ARBITRARY：Any recording length can be selected by the user. Method-1 Method Screen: STATUS1, DISPLAY Fixed recording length mode Call up the STATUS1 or DISPLAY screen. Move the flashing cursor to the shot item, as shown in the figure on the left. Select the SELECT.
47 ──────────────────────────────────────────────────── NOTE ・Depending on the number of channels, the recording length is limited. ・If the recording length is changed during measurement, measurement is restarted using the newly set recording length.
48 ──────────────────────────────────────────────────── 4.3.4 Setting the Format ・The style can be set for showing input signals on the screen display and recording them on the printer. ・The styles single, dual, quad,（DISPLAY screen） , oct・hex（Print only, Display quad style）X-Y single・X-Y quad (dot) and (line) are available. ・The voltage per division is automatically changed according to the display format. Method Method Screen: STATUS1 Press the STATUS key to call up the STATUS1 screen.
49 ──────────────────────────────────────────────────── ■ In the cases of OCT and HEX (printer only), as far as the printer recording output is concerned, the waveforms for each channel are automatically distributed on each graph according to the table below: □ OCT NOTE □ HEX graph analog graph analog graph analog 1 CH 1,9,17,25 1 CH 1,17 9 CH19,25 2 CH 2,10,18,26 2 CH 2,18 10 CH 10,26 3 CH 3,11,19,27 3 CH 3,19 11 CH 11,27 4 CH 4,12,20,28 4 CH14,20 12 CH 12,28 5 CH 5,13,21
50 ──────────────────────────────────────────────────── (1) (1) Single 1 画面 graph Display and record as one graph. (At the most, 32 analog + 32 logic signals) （3） (1) 1Quad 画面 graph ・Display and record as four graphs. (At the most, 32 analog + 8 logic signals) ・Specify which input channel to use for waveform graph display and recording. (2) (1) Dual 1 画面graph ・Display and record as two graphs.
51 ──────────────────────────────────────────────────── 4.3.5 Setting the Display Size The display size can change the normal size or the wide size. Method Method Screen: STATUS1 Press the STATUS key to call up the STATUS1 screen. Move the flashing cursor to the display size item, as shown in the figure on the left. Use the function keys to make the selection. Selection Selection ：Normal size ：Wide size NOTE The display size can be changed by pressing the DISP key on the display screen. 4.3.
52 ──────────────────────────────────────────────────── 4.3.7 Setting the Print Mode Select the format, waveform, or numerical value should be used to output measured data and calculation results. Waveform：The smooth print function can be used, but print speed will decrease. Numerical value：The data spacing interval also must be set. Printing as a waveform Method Method Screen: STATUS1 (1) Setting the Printer Format Press the STATUS key to call up the STATUS1 screen.
53 ──────────────────────────────────────────────────── Printing as numeric data Method Method Screen: STATUS1 (1) Setting the Printer Format Press the STATUS key to call up the STATUS1 screen. Move the flashing cursor to the print mode item, as shown in the figure on the left. Use the function keys to select LOGGING. Selection Selection ：Measurement data and the result of calculation are printed as a waveform. ：Measurement data and the result of calculation are printed as numeric data.
54 ──────────────────────────────────────────────────── 4.3.8 Setting the Roll Mode ・This mode can be used at a time axis range setting of 10 ms/DIV or slower. ・In normal recording, the waveform is displayed only after all data of the recording length have been captured. At low sampling speed settings, this will cause a considerable delay between the start of measurement and the appearance of the waveform on the display.
55 ──────────────────────────────────────────────────── 4.3.9 Setting the Auto Print Function When the function is enabled, printout is carried out automatically after a measurement data is captured. Method Method Screen: STATUS1 Press the STATUS key to call up the STATUS1 screen. Move the flashing cursor to the auto print item, as shown in the figure on the left. Use the function keys to make the selection. Selection Selection ：Auto print is disabled. ：Auto print is enabled.
56 ──────────────────────────────────────────────────── 4.3.10 Setting the Auto Save Function ・When the function is enabled, measurement data are automatically stored on a floppy disk, PC card, MO disk or connected SCSI device after they are captured. ・The Auto Save function stores a file in the directory currently selected on the file screen. See Section 14.12.2. Method Method Screen: STATUS1 Press the STATUS key to call up the STATUS1 screen.
57 ──────────────────────────────────────────────────── Move the flashing cursor to type, and select the format. Selection Selection ：Data are stored as binary data. ：Data are stored as text data. Data stored in the text format is not readable by the 8826. When the data format to be saved is set to text data, the intermittent setting item is displayed. Use the function keys or Jog control to make a setting. Selection Selection ：Move the cursor up in the selection window.
58 ──────────────────────────────────────────────────── 4.3.11 Setting the Overlay Function ・Overlay is performed without clearing the currently displayed waveform (if trigger mode is REPEAT or AUTO). This allows comparison to the immediately preceding waveform. ・If trigger mode is SINGLE, measurement terminates after one set of data has been collected. Therefore the overlay setting is invalid. Method Method Screen: STATUS1 Press the STATUS key to call up the STATUS1 screen.
59 ──────────────────────────────────────────────────── 4.3.12 Setting the Averaging Function ・The averaging function allows capturing several instances of a waveform and determining the average. ・This makes it possible to eliminate noise and irregular signal components. ・The higher the number of averaging instances, the more effectively will noise be suppressed. Method Method Screen: STATUS1 Press the STATUS key to call up the STATUS1 screen.
60 ──────────────────────────────────────────────────── Averaging and trigger mode ■ Trigger mode: SINGLE (1) After the START key was pressed, data are captured whenever the trigger conditions are fulfilled, and summing averaging is carried out. (2) When the specified number of data has been captured, measurement stops automatically. (3) If the measurement was stopped prematurely with the STOP key, the averaging result up to that point is displayed.
61 ──────────────────────────────────────────────────── 4.3.13 Setting the Waveform Evaluation ・The Waveform Evaluation function can be used Memory recorder function (single screen and X-Y single screen). ・GO (pass) or NG (fail) evaluation of the input signal waveform can be performed using an evaluation area specified by the user. ・This can serve to detect irregular waveforms. ・After the evaluation result is generated, signals are output from the GO/NG terminal.
62 ──────────────────────────────────────────────────── 4.4 Using the X-Y Waveform Plots (MEM) ・Setting the display format to X-Y in status screen allows X-Y waveforms to be combined. Any of channels 1 to 32 can be selected for each of the X and Y axis. Up to four X-Y plots can be made simultaneously. ・Voltage axis magnification/compression is active also when using X-Y combined plotting. ・Using the A/B cursors, it is possible to specify the data between the cursors for partial plotting.
63 ──────────────────────────────────────────────────── Method Method Screen: STATUS1, CHANNEL1 (1) Setting the Format Press the STATUS key to call up the STATUS1 screen. Move the flashing cursor to the format item, as shown in the figure on the left. Use the function keys to select the "X-Y single or "X-Y quad" format. Use the function keys to set the interpolation (dot-line). See Section 4.3.6. (2) Setting the Channel Press the CHAN key to call up the CHANNEL1 screen.
64 ──────────────────────────────────────────────────── Partial X-Y plot Using the A/B cursors, it is possible to specify a range for partial X-Y plotting. (Normal X-Y plotting covers all data of the recording length.) Method Method Screen: DISPLAY (excluding X-Y1 and X-Y4) Display the captured waveform data, using a format other than X-Y1 and X-Y4. Use the A/B cursors to specify the desired portion for plotting, as shown in the figure on the left (see Section 11.2).
65 ──────────────────────────────────────────────────── 4.5 Settings on the Display Screen (MEM) Explains the setting items on the Display screen. For details on setting, refer to Section 4.3. When want to use the JOG control, press the VALUE select key.（The selection window is not displayed.) 1 2 3 4 5 6 7 （Zoom function） 8 9 1 Function MEM,REC,RMS,REC&MEM,FFT ･Select function. 2 Trigger mode SINGLE,REPEAT,AUTO ･Select trigger mode.
66 ──────────────────────────────────────────────────── 4.6 Auto Range Function This function automatically selects the time axis range, measurement range and zero position. Taking the lowest numbered channel among the channels for which waveform display is on, 1 to 2.5 cycles are automatically set to be recorded as 25 DIV. Method Method Screen: DISPLAY Press the DISP key to call up the DISPLAY screen. Press the AUTO key. Use the function keys to make the selection.
67 ──────────────────────────────────────────────────── 4.7 Other Screen Settings (MEM) The status screen for the memory recorder function contains three more setup screens. For detailed setup procedures, see the associated sections. Screen The associated chapter and sections STATUS 2 Screen: Memory Segmentation Screen Chapter 15 Memory Segmentation Function STATUS 3 Screen: Parameter Calculation Screen Section 16.1 Parameter Calculation STATUS 4 Screen: Calculating Waveform Data Screen Section 16.
68 ──────────────────────────────────────────────────── 4.8 Start and Stop Operation (MEM) Setting 8826 Setting the to the ８８２６ ･STATUS ･STATUSSettings Settings ･Channel ･ChannelSettings Settings ･Trigger ･TriggerSettings Settings Measurement Start Measurement Start Trigger condition are met Recording Start Measurement end Measurement end ・See Section 4.3 STATUS settings ・See Chapter 9 Input channel settings ・See Chapter 10 Trigger Functions ・Press the START key and LED light.
69 ──────────────────────────────────────────────────── 1 Chapter 5 2 Recorder Function 3 4 5 6 7 8 9 10 11 12 13 14 A ────────────────────────────────────────────────────
70 ──────────────────────────────────────────────────── 5.1 Outline of the Recorder Function The recorder function has the following features. (1) Real time display and printing of the input signal (2) Real time continuous recording of the input signal (3) All input channel data are recorded on the same time axis. Since data for all channels can be superimposed, the relative relationship between input signals can be observed visually.
71 ──────────────────────────────────────────────────── (13) Reprint function 1 The most recent 2000 (64 M words: 10000) divisions of the data stored in memory can be printed as many times as required. (14) Print Real-time print, manual print, partial print, report print, screen hard copy can be printed. (15) X-Y CONT Recorder 2 3 This function allows X-Y plot between channels in real time. 4 5 6 7 8 9 10 11 12 13 14 A ──────────────────────────────────────────────────── 5.
72 ──────────────────────────────────────────────────── 5.2 Operation Sequence (REC) Preparation 測定の準備を行います ・See Chapter 2. Installation of the Unit Turn on the power Connect the inputs Setting Setting the the STATUS1 STATUS1 screen screen ・Press the STATUS key to call up the STATUS screen. ・See Section 5.3. Select the function See Section 5.3.1. ・Select the recorder function. Time axis range See Section 5.3.2. ・Determine the speed with which the input signal waveform is captured.
73 ──────────────────────────────────────────────────── Setting Setting the the CHANNEL CHANNEL Screen Screen ・Set the waveform display color for each channel, measurement range, input coupling, zero position, and filter. See Chapter 9. 1 2 Setting Setting the the TRIGGER TRIGGER Screen Screen Starts Measurement 測定を開始します ・Set the trigger source, trigger types and conditions, the pretrigger, etc. See Chapter 10. ・Press the START key and the LED lights.
74 ──────────────────────────────────────────────────── 5.3 STATUS Settings (REC) 5.3.1 Setting the Function Mode Method Method Screen: STATUS, CHANNEL, DISPLAY Call up the STATUS, CHANNEL or DISPLAY screen. Move the flashing cursor to the position shown in the figure on the left. Press the F2 [ RECORDER ]. Selection Selection ：Memory recorder function ：Recorder function ：RMS recorder function ：Recorder and Memory function ：FFT function ──────────────────────────────────────────────────── 5.
75 ──────────────────────────────────────────────────── 1 5.3.2 Setting the Time Axis Range ・Set the speed for inputting and storing the waveform of the input signal. ・Time axis range setting expresses the time for 1 DIV. ・The sampling period is 1/100th of the set value for the time axis range. (100 samples/DIV) Method-1 Method Screen: STATUS, DISPLAY Call up the STATUS or DISPLAY screen. Move the flashing cursor to the time/div item, as shown in the figure on the left.
76 ──────────────────────────────────────────────────── 5.3.3 Setting the Sampling Period The available range depends on the selected time axis range (input signal waveform capture rate). Method Method Screen: STATUS Press the STATUS key to call up the STATUS screen. Move the flashing cursor to the sampling item, shown in the figure on the left. Use the JOG control or the function keys to make the selection. Selection Selection ：Move the cursor up in the selection window.
77 ──────────────────────────────────────────────────── 5.3.4 Setting the Recording Length ・The length of recording for one measurement operation (number of DIV) can be set. SELECT： Select the recording length. ARBITRARY： Any recording length can be selected by the user. Method-1 Method Screen: STATUS, DISPLAY Fixed recording length mode Call up the STATUS or DISPLAY screen. Move the flashing cursor to the shot item, as shown in the figure on the left. Select the SELECT.
78 ──────────────────────────────────────────────────── Method-2 Method Screen: STATUS, DISPLAY Any recording length mode Call up the STATUS or DISPLAY screen. Move the flashing cursor to the shot item, as shown in the figure on the left. Select the ARBITRARY. Use the JOG control or the function keys to make the selection. Use the cursor keys to change the column. Selection Selection ：Value up. ：Value down. ：Set the fixed recording length mode. ：Set the any recording length mode.
79 ──────────────────────────────────────────────────── 5.3.5 Setting the Format ・The style can be set for showing input signals on the screen display and recording them on the printer. ・The styles single, dual, quad,（DISPLAY screen） , oct・hex（Print only, Display quad style）X-Y single・X-Y quad (dot) and (line) are available. ・The voltage per division is automatically changed according to the display format. Method Method Screen: STATUS Press the STATUS key to call up the STATUS screen.
80 ──────────────────────────────────────────────────── (1) (1) Single 1 画面 graph Display and record as one graph. (At the most, 32 analog + 32 logic signals) （3） (1) 1Quad 画面 graph ・Display and record as four graphs. (At the most, 8 analog + 32 logic signals) ・Specify which input channel to use for waveform graph display and recording. (2) (1) Dual 1 画面graph ・Display and record as two graphs.
81 ──────────────────────────────────────────────────── 5.3.6 Setting the Display Size The display size can change the normal size or the wide size. Method Method Screen: STATUS Press the STATUS key to call up the STATUS screen. Move the flashing cursor to the display size item, as shown in the figure on the left. Use the function keys to make the selection. Selection Selection ：Normal size ：Wide size NOTE The display size can be changed by pressing the DISP key on the display screen.
82 ──────────────────────────────────────────────────── 5.3.7 Setting the Print Mode Select the format, waveform, or numerical value should be used to output measured data. Waveform： The waveform is printed. Numerical value： The data spacing interval also must be set. Printing as a waveform Method Method Screen: STATUS Setting the Printer Format Press the STATUS key to call up the STATUS screen. Move the flashing cursor to the print mode item, as shown in the figure on the left.
83 ──────────────────────────────────────────────────── Printing as numeric data Method Method Screen: STATUS (1) Setting the Printer Format Press the STATUS key to call up the STATUS screen. Move the flashing cursor to the print mode item, as shown in the figure on the left Use the function keys to select LOGGING. Selection Selection ：Measurement data and the result of calculation are printed as a waveform. ：Measurement data and the result of calculation are printed as numeric data.
84 ──────────────────────────────────────────────────── 5.3.8 Setting the Additional Recording Function ・This records, regarding the memory as though it were recording paper. ・Without expansion memory, the last 2000 (64 M words: 10000) divisions of waveform can be held in memory. ・The waveform can be scrolled and printed out. Switching the additional recording on and off affects the use of memory as shown below. Additional recording: OFF Additional recording: ON 1. Recording 25 divisions of waveform 1.
85 ──────────────────────────────────────────────────── Method Method Screen: STATUS Press the STATUS key to call up the STATUS screen. Move the flashing cursor to the record add item, as shown in the figure on the left. Use the function keys to make the selection. Selection Selection ：Additional recording is disabled. ：Additional recording is enabled.
86 ──────────────────────────────────────────────────── 5.3.9 Setting the Printer Function (Real Time Printing) The input waveform is continuously printed in real time. Method Method Screen: STATUS Press the STATUS key to call up the STATUS screen. Move the flashing cursor to the printer item, as shown in the figure on the left. Use the function keys to make the selection. Selection Selection ：Printing is disabled. ：Printing is enabled.
87 ──────────────────────────────────────────────────── 5.3.10 Setting the Auto Save Function ・When the function is enabled, measurement data are automatically stored on a floppy disk, PC card, MO disk or connected SCSI device after they are captured. ・The Auto Save function stores a file in the directory currently selected on the file screen. See Section 14.12.2. Method Method Screen: STATUS1 Press the STATUS key to call up the STATUS1 screen.
88 ──────────────────────────────────────────────────── Move the flashing cursor to type, and select the format. Selection Selection ：Data are stored as binary data. ：Data are stored as text data. Data stored in the text format is not readable by the 8826. When the data format to be saved is set to text data, the intermittent setting item is displayed. Use the function keys or Jog control to make a setting. Selection Selection ：Move the cursor up in the selection window.
89 ──────────────────────────────────────────────────── 5.3.11 Setting the Interpolation (dot-line, X-Y only) ・Interpolation can be set when set the X-Y graph format. ・This setting determines whether the input waveform (sampling data) is to be displayed and printed as a series of dots or a line using linear interpolation. Method Method Screen: STATUS Press the STATUS key to call up the STATUS screen. Move the flashing cursor to the dot-line item, as shown in the figure on the left.
90 ──────────────────────────────────────────────────── 5.4 Using the X-Y CONT Recorder (1) The same operation as a normal recorder is available to plot between channels (real time X-Y recording). (2) Unlike an X-Y plot produced in the memory recorder function mode, the time axis information for each channel is not being recorded. (3) Any of channels 1 to 32 can be selected for each of the X and Y axis. Up to four X-Y plots can be made simultaneously.
91 ──────────────────────────────────────────────────── Setting the STATUS screen Setting the Format Method Method Press the STATUS key to call up the STATUS screen. Move the flashing cursor to the format item. Use the function keys to select the "X-Y single" or "X-Y quad" format. See Section 5.3.5. Setting the Display Size Method Method Press the STATUS key to call up the STATUS screen. Move the flashing cursor to the display size item. Use the function keys to make the selection. See Section 5.3.6.
92 ──────────────────────────────────────────────────── Setting the CHANNEL screen Method Method Screen: CHANNEL1 Press the CHAN key to call up the CHANNEL1 screen. Move the flashing cursor to desired channel, and use the function keys to set the waveform color (including displays waveform ON/OFF). Selection Selection ：Move the cursor up in the selection window. ：Move the cursor down in the selection window. ：Waveform is performed. ：Waveform is not performed. Specify the X-axis channel.
93 ──────────────────────────────────────────────────── 5.5 Settings on the Display Screen (REC) Explains the setting items on the Display screen. For details on setting, refer to Section 5.3. When want to use the JOG control, press the VALUE select key.（The selection window is not displayed.) 1 2 3 4 5 6 7 1 Function MEM,REC,RMS,REC&MEM,FFT ･Select function. 2 Trigger mode SINGLE,REPEAT ･Select trigger mode. 3 Analog trigger OFF,LEVEL,OUT,IN,CYCLE ･Set the analog trigger.
94 ──────────────────────────────────────────────────── 5.6 Start and Stop Operation (REC) Setting 8826 Setting the to the ８８２６ ・See Section 5.3 STATUS settings ・See Chapter 9 Input channel settings ・See Chapter 10 Trigger Functions Measurement Start Measurement Start ・Press the START key and LED light. ・When the trigger can be registered, the indication Waiting for trigger is shown on the display. Trigger condition are met ・Data recording starts when trigger condition are met.
95 ──────────────────────────────────────────────────── 1 Chapter 6 2 RMS Recorder Function 3 4 5 6 7 8 9 10 11 12 13 14 A ────────────────────────────────────────────────────
96 ──────────────────────────────────────────────────── 6.1 Outline of the RMS Recorder Function The RMS recorder function has the following features. (1) The voltage value and DC signal for the commercial power supplies are displayed and recorded as the rms value. (2) Real time continuous recording (3) The 8826 is designed to measure commercial power supplies (50/60 Hz) and DC signal. (4) RMS accuracy：±3%f.s.
97 ──────────────────────────────────────────────────── (15) Print 1 Real-time print, manual print, partial print, report print, screen hard copy can be printed. 2 3 4 5 6 7 8 9 10 11 12 13 14 A ──────────────────────────────────────────────────── 6.
98 ──────────────────────────────────────────────────── 6.2 Operation Sequence (RMS) Preparation 測定の準備を行います ・See Chapter 2. Installation of the Unit Turn on the power Connect the inputs Setting Setting the the STATUS1 STATUS1 screen screen ・Press the STATUS key to call up the STATUS screen. Select the function See Section 6.3.1 ・Select the RMS recorder function. Time axis range See Section 6.3.2 ・Determine the speed with which the input signal waveform is captured.
99 ──────────────────────────────────────────────────── Setting Setting the the CHANNEL CHANNEL Screen Screen ・Set the waveform display color for each channel, measurement range, input coupling, zero position, and filter. See Chapter 9. 1 2 Setting Setting the the TRIGGER TRIGGER Screen Screen Starts Measurement 測定を開始します ・Set the trigger source, trigger types and conditions, the pretrigger, etc. See Chapter 10. ・Press the START key and the LED lights.
100 ──────────────────────────────────────────────────── 6.3 STATUS Settings (RMS) 6.3.1 Setting the Function Mode Method Method Screen: STATUS, CHANNEL, DISPLAY Call up the STATUS, CHANNEL or DISPLAY screen. Move the flashing cursor to the position shown in the figure on the left. Press the F3 [ RMS ]. Selection Selection ：Memory recorder function ：Recorder function ：RMS recorder function ：Recorder and Memory function ：FFT function ──────────────────────────────────────────────────── 6.
101 ──────────────────────────────────────────────────── 1 6.3.2 Setting the Time Axis Range ・Set the speed for inputting and storing the waveform of the input signal. ・Time axis range setting expresses the time for 1 DIV. ・The sampling interval is constant (200μs), regardless of the time axis range. Method-1 Method Screen: STATUS, DISPLAY Call up the STATUS or DISPLAY screen. Move the flashing cursor to the time/div item, as shown in the figure on the left.
102 ──────────────────────────────────────────────────── 6.3.4 Setting the Recording Length The length of recording for one measurement operation (number of DIV) can be set. SELECT： Select the recording length. ARBITRARY： Any recording length can be selected by the user. Method-1 Method Screen: STATUS, DISPLAY Fixed recording length mode Call up the STATUS or DISPLAY screen. Move the flashing cursor to the shot item, as shown in the figure on the left. Select the SELECT.
103 ──────────────────────────────────────────────────── Method-2 Method Screen: STATUS, DISPLAY Any recording length mode Call up the STATUS or DISPLAY screen. Move the flashing cursor to the shot item, as shown in the figure on the left. Select the ARBITRARY. Use the JOG control or the function keys to make the selection. Use the CURSOR keys to change the column. Selection Selection ：Value up. ：Value down. ：Set the fixed recording length mode. ：Set the any recording length mode.
104 ──────────────────────────────────────────────────── 6.3.5 Setting the Format ・The style can be set for showing input signals on the screen display and recording them on the printer. ・The styles single, dual, quad,（DISPLAY screen） , oct and hex（Print only, Display quad style）are available. ・The voltage per division is automatically changed according to the display format. Method Method Screen: STATUS Press the STATUS key to call up the STATUS screen.
105 ──────────────────────────────────────────────────── (1) (1) Single 1 画面 graph Display and record as one graph. (At the most, 32 analog + 32 logic signals) （3） (1) 1Quad 画面 graph ・Display and record as four graphs. (At the most, 8 analog + 32 logic signals) ・Specify which input channel to use for waveform graph display and recording. (2) (1) Dual 1 画面graph ・Display and record as two graphs.
106 ──────────────────────────────────────────────────── 6.3.6 Setting the Display Size The display size can change the normal size or the wide size. Method Method Screen: STATUS Press the STATUS key to call up the STATUS screen. Move the flashing cursor to the display size item, as shown in the figure on the left. Use the function keys to make the selection. Selection Selection ：Normal size ：Wide size NOTE ･ The display size can be changed by pressing the DISP key on the display screen.
107 ──────────────────────────────────────────────────── 6.3.7 Setting the Print Mode Select the format, waveform, or numerical value should be used to output measured data. Waveform：The waveform is printed. Numerical value：The data spacing interval also must be set. Printing as a waveform Method Method Screen: STATUS Setting the Printer Format Press the STATUS key to call up the STATUS screen. Move the flashing cursor to the print mode item, as shown in the figure on the left.
108 ──────────────────────────────────────────────────── Printing as numeric data Method Method Screen: STATUS (1) Setting the Printer Format Press the STATUS key to call up the STATUS screen. Move the flashing cursor to the print mode item, as shown in the figure on the left. Use the function keys to select LOGGING. Selection Selection ：Measurement data and the result of calculation are printed as a waveform. ：Measurement data and the result of calculation are printed as numeric data.
109 ──────────────────────────────────────────────────── 6.3.8 Setting the Additional Recording Function ・This records, regarding the memory as though it were recording paper. ・Without expansion memory, the last 2000 (64 M words: 10000) divisions of waveform can be held in memory. ・The waveform can be scrolled and printed out. Switching the additional recording on and off affects the use of memory as shown below. Additional recording: OFF Additional recording: ON 1. Recording 25 divisions of waveform 1.
110 ──────────────────────────────────────────────────── Method Method Screen: STATUS Press the STATUS key to call up the STATUS screen. Move the flashing cursor to the record add item, as shown in the figure on the left. Use the function keys to make the selection. Selection Selection ：Additional recording is disabled. ：Additional recording is enabled.
111 ──────────────────────────────────────────────────── 6.3.9 Setting the Printer Function (Real Time Printing) The input waveform is continuously printed in real time. Method Method Screen: STATUS Press the STATUS key to call up the STATUS screen. Move the flashing cursor to the printer item, as shown in the figure on the left. Use the function keys to make the selection. Selection Selection ：Printing is disabled. ：Printing is enabled. ──────────────────────────────────────────────────── 6.
112 ──────────────────────────────────────────────────── 6.3.10 Setting the Auto Save Function ・When the function is enabled, measurement data are automatically stored on a floppy disk, PC card, MO disk or connected SCSI device after they are captured. ・The Auto Save function stores a file in the directory currently selected on the file screen. See Section 14.12.2. Method Method Screen: STATUS1 Press the STATUS key to call up the STATUS1 screen.
113 ──────────────────────────────────────────────────── Move the flashing cursor to type, and select the format. Selection Selection ：Data are stored as binary data. ：Data are stored as text data. Data stored in the text format is not readable by the 8826. When the data format to be saved is set to text data, the intermittent setting item is displayed. Use the function keys or Jog control to make a setting. Selection Selection ：Move the cursor up in the selection window.
114 ──────────────────────────────────────────────────── 6.4 Settings on the Display Screen (RMS) Explains the setting items on the Display screen. For details on setting, refer to Section 6.3. When want to use the JOG control, press the VALUE select key.（The selection window is not displayed 1 2 3 4 5 6 7 8 1 Function MEM,REC,RMS,REC&MEM,FFT ･Select function. 2 Trigger mode SINGLE,REPEAT ･Select trigger mode. 3 Analog trigger RMS LEVEL ･Set the analog trigger.
115 ──────────────────────────────────────────────────── 6.5 Start and Stop Operation (RMS) Setting 8826 Setting the to the ８８２６ ・See Section 6.3 STATUS settings ・See Chapter 9 Input channel settings ・See Chapter 10 Trigger Functions Measurement Start Measurement Start ・Press the START key and LED light. ・When the trigger can be registered, the indication Waiting for trigger is shown on the display. Trigger condition are met ・Data recording starts when trigger condition are met.
116 ──────────────────────────────────────────────────── ──────────────────────────────────────────────────── 6.
117 ──────────────────────────────────────────────────── 1 Chapter 7 2 Recorder & Memory 3 Function 4 5 7.1 Outline of the Recorder & Memory Function The Recorder & Memory function has the following features. (1) After being stored in the internal memory, input signal data can be displayed and printed. (2) All input channel data are recorded on the same time axis. 6 7 8 Since data for all channels can be superimposed, the relative relationship between input signals can be observed visually.
118 ──────────────────────────────────────────────────── 7.2 Operation Sequence (REC&MEM) Preparation 測定の準備を行います ・See Chapter 2. Installation of the Unit Turn on the power Connect the inputs Setting Setting the the STATUS1 STATUS1 screen screen ・Press the STATUS key to call up the STATUS screen. Select the function See Section 7.3.1 ・Select the recorder function. Time axis range See Section 7.3.2 ・Determine the speed with which the input signal waveform is captured. Recording length See Section 7.
119 ──────────────────────────────────────────────────── 1 Setting Setting the the STATUS2 STATUS2 Screen Screen ・Press the STATUS key to call up the STATUS screen. ・See Section 7.4. Sequential Save Function ・This function divides the memory into separate blocks, each of which can be used for waveform recording. 2 3 4 5 Setting Setting the the CHANNEL CHANNEL Screen Screen ・Set the waveform display color for each channel, measurement range, input coupling, zero position, and filter. See Chapter 9.
120 ──────────────────────────────────────────────────── 7.3 STATUS1 Settings (REC&MEM) 7.3.1 Setting the Function Mode Method Method Screen: STATUS, CHANNEL, DISPLAY Call up the STATUS, CHANNEL or DISPLAY screen. Move the flashing cursor to the position shown in the figure on the left. Press the F4 [ REC&MEM ].
121 ──────────────────────────────────────────────────── 1 7.3.2 Setting the Time Axis Range ・Set the speed for inputting and storing the waveform of the input signal. ・Time axis range setting expresses the time for 1 DIV. ・The sampling period is 1/100th of the set value for the time axis range. (100 samples/DIV) (See Section 21.3) ・Recorder sampling is performed using the sampling period set by the memory recorder function.
122 ──────────────────────────────────────────────────── 7.3.3 Setting the Recording Length ・For both recorder and memory recorder functions, the length of recording for one measurement operation (number of DIV) can be set. ・Two types of recording length can be set. SELECT： Select the recording length. ARBITRARY： Any recording length can be selected by the user. Method-1 Method Screen: STATUS, DISPLAY Fixed recording length mode Call up the STATUS or DISPLAY screen.
123 ──────────────────────────────────────────────────── Method-2 Method Screen: STATUS, DISPLAY 1 Any recording length mode Call up the STATUS or DISPLAY screen. Move the flashing cursor to the shot item, as shown in the figure on the left. Select the ARBITRARY. Use the JOG control or the function keys to make the selection. Use the cursor keys to change the column. 2 3 4 Selection Selection ：Value up. 5 ：Value down. ：Set the fixed recording length mode. 6 ：Set the any recording length mode.
124 ──────────────────────────────────────────────────── 7.3.4 Setting the Display function ・Select the waveform function to be used for display. ・During measurement, the display shows the recorder waveform. ・Function switching is used with display screen settings and displayed waveforms. Method Method Screen: STATUS Press the STATUS key to call up the STATUS screen. Move the flashing cursor to the function item, as shown in the figure on the left. Use the function keys to make the selection.
125 ──────────────────────────────────────────────────── 7.3.5 Setting the Display Size The display size can change the normal size or the wide size. Method Method Screen: STATUS Press the STATUS key to call up the STATUS screen. Move the flashing cursor to the display size item, as shown in the figure on the left. Use the function keys to make the selection. Selection Selection ：Normal size ：Wide size NOTE The display size can be changed by pressing the DISP key on the display screen.
126 ──────────────────────────────────────────────────── 7.3.6 Setting the Format ・The style can be set for showing input signals on the screen display and recording them on the printer. ・The styles single, dual, quad,（DISPLAY screen） , oct・hex（Print only, Display quad style）are available. ・The voltage per division is automatically changed according to the display format. Method Method Screen: STATUS Press the STATUS key to call up the STATUS screen.
127 ──────────────────────────────────────────────────── 7.3.7 Setting the Print Mode Select the format, waveform, or numerical value should be used to output measured data. Waveform： The waveform is printed. Numerical value： The data spacing interval also must be set. Printing as a waveform Method Method Screen: STATUS1 (1) Setting the Printer Format Press the STATUS key to call up the STATUS1 screen. Move the flashing cursor to the print mode item, as shown in the figure on the left.
128 ──────────────────────────────────────────────────── Printing as numeric data Method Method Screen: STATUS (1) Setting the Printer Format Press the STATUS key to call up the STATUS screen. Move the flashing cursor to the print mode item, as shown in the figure on the left Use the function keys to select LOGGING. Selection Selection ：Measurement data and the result of calculation are printed as a waveform. ：Measurement data and the result of calculation are printed as numeric data.
129 ──────────────────────────────────────────────────── 7.3.8 Setting the Additional Recording Function ・This records, regarding the memory as though it were recording paper. ・Without expansion memory, the last 1000 (64 M words: 5000) divisions of waveform can be held in memory. ・The waveform can be scrolled and printed out. Switching the additional recording on and off affects the use of memory as shown below. Additional recording: OFF Additional recording: ON 1. Recording 25 divisions of waveform 1.
130 ──────────────────────────────────────────────────── Method Method Screen: STATUS Press the STATUS key to call up the STATUS screen. Move the flashing cursor to the record add item, as shown in the figure on the left. Use the function keys to make the selection. Selection Selection ：Additional recording is disabled. ：Additional recording is enabled.
131 ──────────────────────────────────────────────────── 7.3.9 Setting the Printer Function (Real Time Printing) The input waveform (REC) is continuously printed in real time. Method Method Screen: STATUS Press the STATUS key to call up the STATUS screen. Move the flashing cursor to the printer item, as shown in the figure on the left. Use the function keys to make the selection. Selection Selection ：Printing is disabled. ：Printing is enabled.
132 ──────────────────────────────────────────────────── 7.3.10 Setting the Auto Save Function ・When the function is enabled, measurement data are automatically stored on a floppy disk, PC card, MO disk or connected SCSI device after they are captured. ・The Auto Save function stores a file in the directory currently selected on the file screen. See Section 14.12.2. Method Method Screen: STATUS1 Press the STATUS key to call up the STATUS1 screen.
133 ──────────────────────────────────────────────────── Move the flashing cursor to type, and select the format. Selection Selection ：Data are stored as binary data. ：Data are stored as text data. Data stored in the text format is not readable by the 8826. When the data format to be saved is set to text data, the intermittent setting item is displayed. Use the function keys or Jog control to make a setting. Selection Selection ：Move the cursor up in the selection window.
134 ──────────────────────────────────────────────────── NOTE ・Auto saving is set to "RECORDER, MEMORY DATA," and batch saving is executed (an index file is created). When either option (i.e., RECORDER or MEMORY DATA) is selected, individual saving is executed. ・When auto-save is enabled, the storage channel cannot be selected. Data for the channel for which the waveform is displayed is saved. ・For details on auto saving file name, refer to Section 14.7.
135 ──────────────────────────────────────────────────── 7.3.11 Setting the Real-Time Save Data can be saved to memory in real time, and afterwards compressed and stored on disk. Real-time save data is stored in binary format on the PC card or internal MO drive. Trigger settings are not applicable to the memory waveform, and the start of Memory waveform recording coincides with the start of the Recorder waveform.
136 ──────────────────────────────────────────────────── Move the blinking cursor to "Memory Recording Length", and select using the jog control or function keys. Selection Selection ：Move the cursor up in the selection window. ：Move the cursor down in the selection window. NOTE ・The sampling cycle of the recorder is the same as that set for the memory, so depending on the sampling cycle, there are some time axes that cannot be set for the recorder. Refer to Section 7.3.2 for details.
137 ──────────────────────────────────────────────────── ■Maximum Recording Time The maximum settable recording time is determined by the space available on the PC card or MO disk, the MEM and REC time axes and the selected recording length. However, the maximum REC recording length is limited to 1000 DIV (5000 with expanded memory), so the recording time cannot be set beyond this limit regardless of space available on the PC card or MO disk.
138 ──────────────────────────────────────────────────── ■Loading Real-Time Save Data To load data saved by Real-Time Save, load the index file (R_M). Data loaded by the index file consists of all recorder waveforms and the header (2000 DIV) of the memory waveform. Loading of the memory waveform is specified by use of the A-B cursors within the recorder waveform. Refer to Section 14.8, "LOAD" regarding loading data saved by Real-Time Save.
139 ──────────────────────────────────────────────────── ■Loading Memory Waveforms The memory waveform is specified by use of the A-B cursors within the recorder waveform. Method Method Flashing cursor Screen: STATUS2 Press the DISP key to display the DISPLAY screen. Move the blinking cursor to the location indicated in the figure. Press function key F4 (Record & Memory) to display the recorder waveform screen (REC & mem). Specify the area to display as the memory waveform with the A-B cursors.
140 ──────────────────────────────────────────────────── 7.4 STATUS2 Settings (REC&MEM) 7.4.1 Using the Sequential Save Function This function divides the memory into separate blocks, each of which can be used for waveform recording. Refer to Section 15.1 for details. Method Method Screen: STATUS2 Press the STATUS key to call up the STATUS2 screen. Move the flashing cursor to the memory div item, as shown in the figure on the left. Use the function keys to make the selection.
141 ──────────────────────────────────────────────────── 7.5 Settings on the Display Screen (REC&MEM) Explains the setting items on the Display screen. For details on setting, refer to Section 7.3. When want to use the JOG control, press the VALUE select key.（The selection window is not displayed.) 1 2 3 Upon pressing the "Recorder & Memory" function key, the display changes where indicated in the figure, and you can set the waveform to be displayed.
142 ──────────────────────────────────────────────────── 7.6 Start and Stop Operation (REC&MEM) Setting 8826 Setting the to the ８８２６ ・See Section 7.3 STATUS settings ・See Chapter 9 Input channel settings ・See Chapter 10 Trigger Functions Measurement Start Measurement Start ・Press the START key and LED light. ・When the trigger mode is set to "TIMER," the system waits until the set time is reached. ・Displays "Storing". ・Waveform appears on the screen and printout starts (Auto print: ON).
143 ──────────────────────────────────────────────────── 1 Chapter 8 2 FFT Function 3 4 5 8.1 Outline of the FFT Function (1) FFT (Fast Fourier Transform) processing can be performed on input signal data for frequency analysis.
144 ──────────────────────────────────────────────────── 8.2 Operation Sequence (FFT) Preparation 測定の準備を行います Installation of the Unit ・See Chapter 2. Turn on the power Connect the inputs Setting Setting the the STATUS1 STATUS1 screen screen ・Press the STATUS key to call up the STATUS1 screen. ・See Section 8.3. Select the function See Section 8.3.1 ・Select the FFT function. FFT mode See Section 8.3.
145 ──────────────────────────────────────────────────── Setting Setting the the CHANNEL CHANNEL Screen Screen ・Set the waveform display color for each channel, measurement range, input coupling, zero position, and filter. See Chapter 9. 1 2 Setting Setting the the TRIGGER TRIGGER Screen Screen Starts Measurement 測定を開始します ・Set the trigger source, trigger types and conditions, the pretrigger, etc. See Chapter 10. ・Press the START key and the LED lights.
146 ──────────────────────────────────────────────────── 8.3 STATUS1 Settings (FFT) 8.3.1 Setting the Function Mode Method Method Screen: STATUS1, CHANNEL, DISPLAY Call up the STATUS1, CHANNEL or DISPLAY screen. Move the flashing cursor to the position shown in the figure on the left. Press the F5 [ FFT ]. Selection Selection ：Memory recorder function ：Recorder function ：RMS recorder function ：Recorder and Memory function ：FFT function ──────────────────────────────────────────────────── 8.
147 ──────────────────────────────────────────────────── 1 8.3.2 Setting the FFT Channel Mode ・This setting determines whether only one channel (1ch-FFT) or two channels (2ch-FFT) are used for FFT processing. ・When "1ch-FFT" is selected, certain FFT analysis modes will not be available. Method Method Screen: STATUS1 Press the STATUS key to call up the STATUS1 screen. Move the flashing cursor to the FFT mode item, shown in the figure on the left. Use the function keys to make the selection.
148 ──────────────────────────────────────────────────── 8.3.3 Setting the Frequency Range ・The frequency range (frequency axis maximum value) can be set as follows. ・The frequency range corresponds to the time axis range (TIME/DIV) setting of the memory function. Method Method Screen: STATUS1, DISPLAY Call up the STATUS1 or DISPLAY screen. Move the flashing cursor to the frequency range item, shown in the figure on the left. Use the JOG control or the function keys to make the selection.
149 ──────────────────────────────────────────────────── 1 8.3.4 Setting the Sampling Point When the number of points is increased, the frequency resolution is also increased but the operation time is prolonged. Method Method 2 Screen: STATUS1 Press the STATUS key to call up the STATUS1 screen. Move the flashing cursor to the sampling point item, shown in the figure on the left. Use the function keys to make the selection.
150 ──────────────────────────────────────────────────── 8.3.5 Setting the Window Processing ・The window function defines the segment of the input signal that will be processed. ・Window processing can be used to minimize leakage error. Method Method Screen: STATUS1 Press the STATUS key to call up the STATUS1 screen. Move the flashing cursor to the window item, shown in the figure on the left. Use the function keys to make the selection. Selection Selection ：Rectangular: effective on discrete waveforms.
151 ──────────────────────────────────────────────────── 8.3.6 Setting the Format ・You can set the format for displaying input signal waveforms on the screen and recording them on the printer. ・The SINGLE, DUAL, and NYQUIST formats are available. Method Method Screen: STATUS1 Press the STATUS key to call up the STATUS1 screen. Move the flashing cursor to the format item, shown in the figure on the left. Use the function keys to make the selection.
152 ──────────────────────────────────────────────────── (1) (1) Single 1 画面 graph Displays the waveform on a single screen. （3） (1) 1Nyquist 画面 (2) (1) Dual 1 画面graph Divides the waveform display screen into upper and lower screens. graph For the linear spectrum, cross power spectrum, and transfer function, displays the real-number portion of the data for the FFT calculation result on the X-axis, and the imaginary number portion of the data on the Y-axis.
153 ──────────────────────────────────────────────────── 8.3.7 Selecting Reference Data Select data to be used for FFT processing. Method Method Screen: STATUS1 Press the STATUS key to call up the STATUS1 screen. Move the flashing cursor to the reference item, shown in the figure on the left. Use the function keys to make the selection.
154 ──────────────────────────────────────────────────── 8.3.8 Setting the FFT Analysis Mode Used to select the FFT calculation method. Screen: STATUS1, DISPLAY Method Method Call up the STATUS1 or DISPLAY screen. Move the flashing cursor to the FFT mode item, shown in the figure on the left. Use the function keys to make the selection. For detail on FFT mode, see Section 8.7. GUI Mode GUI Mode Stored waveform (Section 8.7.1) Transfer function (Section 8.7.7) Linear spectrum (Section 8.7.
155 ──────────────────────────────────────────────────── 8.3.10 Setting the X-axis and Y-axis Displays ・Set the X and Y axis for display of FFT calculation results. ・Different units can be selected for the X and Y axis. ・With some FFT analysis modes, one of the axis cannot be set. Method Method Screen: STATUS1, DISPLAY Call up the STATUS1 or DISPLAY screen. Move the flashing cursor to the x-axis item, shown in the figure on the left. Use the function keys to make the selection.
156 ──────────────────────────────────────────────────── X and Y Axis Settings Available with each FFT Analysis Mode FFT analysis mode STR Storage Waveform LIN Linear Spectrum Y-axis (vertical axis) (Time) (Linear) LIN-Hz LOG-Hz LIN-REAL LIN-IMAG LIN-MAG LOG-MAG PHASE RMS RMS Spectrum LIN-Hz LOG-Hz LIN-REAL LIN-IMAG LIN-MAG LOG-MAG PHASE PSP Power Spectrum LIN-Hz LOG-Hz LIN-MAG LOG-MAG ACR Auto Correlation Function (Time) (Linear) HIS Histogram (Volt) (Linear) LIN-Hz LOG-Hz LIN-RE
157 ──────────────────────────────────────────────────── 8.3.11 Setting the Display Scale The display scale for showing the FFT processing result can either be set manually or automatically. Method Method Screen: STATUS1 Press the STATUS key to call up the STATUS1 screen. Move the flashing cursor to the scale item, shown in the figure on the left. Use the function keys to make the selection. Selection Selection ：The vertical axis (Y-axis) scale is set automatically, depending on the processing result.
158 ──────────────────────────────────────────────────── NOTE ・Entering the number with CH&NUM key, see Section 9.6.1. ・When the scaling function is enabled for a channel, the unit selected for the channel is displayed. ・The X-axis setting for the histogram can be changed on the Waveform display screen or the CHANNEL1 screen. (If the upper or lower limit value is changed, the x-axis is changed.) ・The unit (eu) setting is affected by the scaling setting.
159 ──────────────────────────────────────────────────── 8.3.12 Octave Filter Setting When octave analysis has been selected, two different filter types can be chosen. The characteristics of both filter types are within ANSI CLASS 3 tolerance limits. (1/3-octave only) Method Method Screen: STATUS1 When the octave analysis is selected in analysis mode, the oct-filter item is shown. Move the flashing cursor to the oct-filter item. The function key display appears, allowing you to make the selection.
160 ──────────────────────────────────────────────────── 8.4 STATUS2 Settings (FFT) 8.4.1 Setting the Averaging Function ・The averaging function allows capturing several instances of a waveform and determining the average. ・This makes it possible to eliminate noise and irregular signal components. ・The higher the number of averaging instances, the more effectively will noise be suppressed. Screen: STATUS2 Method Method Press the STATUS key to call up the STATUS2 screen.
161 ──────────────────────────────────────────────────── ■ Time axis waveform averaging After the START key was pressed, data are captured whenever the trigger conditions are fulfilled. After averaging, FFT processing is performed and the result is displayed. Trigger mode: AUTO and AUTO STOP When the START key is pressed, data are captured even if trigger conditions are not fulfilled after a certain interval. If averaging is applied to unsynchronized input signals, the result will be meaningless.
162 ──────────────────────────────────────────────────── FFT analysis mode and averaging Symbols in the table have the following meaning : Setting is valid −: Setting is invalid (has no effect) FFT analysis mode Y-axis Time axis averaging Frequency axis averaging Peak hold Storage waveform (Linear) − Linear spectrum LIN-REAL LIN-IMAG LIN-MAG LOG-MAG PHASE − − RMS spectrum Power spectrum LIN-REAL LIN-IMAG LIN-MAG LOG-MAG PHASE − − − − − − LIN-MAG LOG-MAG Auto correlation function (Linea
163 ──────────────────────────────────────────────────── Averaging and trigger mode (FFT) (1) Trigger mode: SINGLE 1. After the START key was pressed, data are captured whenever the trigger conditions are fulfilled, averaging is carried out, and then the waveform is displayed. Collected waveform data is averaged with the FFT time axis waveform and FFT processing is performed. FFT processing is performed on the frequency axis and the calculated result is averaged. 2.
164 ──────────────────────────────────────────────────── (3) Trigger mode: AUTO (Time axis waveform) When the START key is pressed, data are captured even if trigger conditions are not fulfilled after a certain interval. If averaging is applied to unsynchronized input signals, the result will be meaningless. (Frequency axis waveform) 1. After the START key was pressed, data are captured whenever the trigger conditions are fulfilled, and averaging is carried out until the specified averaging count.
165 ──────────────────────────────────────────────────── 8.4.2 Setting the Interpolation The input signal (sampled data) and FFT waveform can be displayed and recorded as is, or after linear interpolation. Method Method Screen: STATUS2 Press the STATUS key to call up the STATUS2 screen. Move the flashing cursor to the dot-line item, shown in the figure on the left. Use the function keys to make the selection. Selection Selection ：Linear interpolation is not performed.
166 ──────────────────────────────────────────────────── 8.4.3 Setting the Print Mode Select the format, waveform, or numerical value should be used to output measured data and calculation results. Method Method Screen: STATUS2 (1) Setting the Printer Format Press the STATUS key to call up the STATUS2 screen. Move the flashing cursor to the print mode item, as shown in the figure on the left. Use the function keys to make the selection.
167 ──────────────────────────────────────────────────── 8.4.4 Setting the Auto Print Function When the function is enabled, printout is carried out automatically after a measurement data is captured. Method Method Screen: STATUS2 Press the STATUS key to call up the STATUS2 screen. Move the flashing cursor to the auto print item, as shown in the figure on the left. Use the function keys to make the selection. Selection Selection ：Auto print is disabled. ：Auto print is enabled.
168 ──────────────────────────────────────────────────── 8.4.5 Setting the Auto Save Function ・When the function is enabled, measurement data are automatically stored on a floppy disk, PC card, MO disk or connected SCSI device after they are captured. ・The Auto Save function stores a file in the directory currently selected on the file screen. See Section 14.12.2. Method Method Screen: STATUS2 Press the STATUS key to call up the STATUS2 screen.
169 ──────────────────────────────────────────────────── Move the flashing cursor to type, and select the format. Selection Selection ：Data are stored as binary data. ：Data are stored as text data. Data stored in the text format is not readable by the 8826. Set the file name. For the input method, refer to Section 9.8.4. When using auto-save, a number is appended to the name you specify as the file name. This then becomes the file name.
170 ──────────────────────────────────────────────────── 8.4.6 Setting the Waveform Evaluation ・The Waveform Evaluation function can be used single screen and Nyquist screen. ・GO (pass) or NG (fail) evaluation of the input signal waveform can be performed using an evaluation area specified by the user. ・This can serve to detect irregular waveforms. ・After the evaluation result is generated, signals are output from the GO/NG terminal.
171 ──────────────────────────────────────────────────── 8.5 Settings on the Display Screen (FFT) Explains the setting items on the Display screen. For details on setting, refer to Section 8.3 and 8.4. When want to use the JOG control, press the VALUE select key.（The selection window is not displayed.) 1 FFT Channel Mode ・1ch or 2ch 2 Reference Data ・"new" or "mem" 10 11 12 3 4 Display Scale 5 6 7 8 9 1 Function MEM,REC,RMS,REC&MEM,FFT ･Select function.
172 ──────────────────────────────────────────────────── 8.6 Start and Stop Operation (FFT) Setting 8826 Setting the to the ８８２６ ･STATUS ･STATUSSettings Settings ･Channel ･ChannelSettings Settings ･Trigger ･TriggerSettings Settings Measurement Start Measurement Start Trigger condition are met Recording Start Measurement end Measurement end ・See ・See ・See ・See Section 8.3 Section 8.
173 ──────────────────────────────────────────────────── 8.7 Analysis Function 8.7.1 Storage Waveform [STR] Displays the time domain waveform of the input signal. Displays the time domain waveform of the input signal. Function Horizontal cursor Vertical cursor fa Time Time axis display Indicates the value of the specified TIME/DIV frequency range. (Refer to the table of the frequency range and time axis in Section 8.3.3.
174 ──────────────────────────────────────────────────── 8.7.2 Linear Spectrum [LIN] The frequency domain waveform of the input signal, including magnitude and phase information. Major applications include: ・Determining the peaks of waveform frequency components ・Determining the levels of high and low harmonics Function Horizontal cursor Vertical cursor Fa = (fa) = |Fa|exp(jθa) = |Fa|(cos ∠θa + jsin ∠θa) LIN-Hz Frequency spectrum display as linear units.
175 ──────────────────────────────────────────────────── Examples Linear spectra waveforms Stored waveform Y-axis: LIN-REAL (X-axis: LOG-Hz) Y-axis: LIN-IMAG (X-axis: LOG-Hz) Y-axis: LIN-MAG (X-axis: LOG-Hz) Y-axis: LOG-MAG (X-axis: LOG-Hz) Y-axis: PHASE (X-axis: LOG-Hz) Nyquist ──────────────────────────────────────────────────── 8.
176 ──────────────────────────────────────────────────── 8.7.3 RMS Spectrum [RMS] Displays the frequency domain waveform of the input signal, including magnitude (effective value) and phase information. Major applications include: ・Determining the peaks of waveform frequency components. ・Determining the effective values of frequency components.
177 ──────────────────────────────────────────────────── Example RMS spectra waveform 08-23, 30, 31, 32, 33, 34 Stored waveform Y-axis: LIN-REAL (X-axis: LOG-Hz) Y-axis: LIN-IMAG (X-axis: LOG-Hz) Y-axis: LIN-MAG (X-axis: LOG-Hz) Y-axis: LOG-MAG (X-axis: LOG-Hz) Y-axis: PHASE (X-axis: LOG-Hz) ──────────────────────────────────────────────────── 8.
178 ──────────────────────────────────────────────────── 8.7.4 Power Spectrum [PSP] Displays the energy spectrum of the input signal, consisting of only magnitude information.
179 ──────────────────────────────────────────────────── Example Power spectra waveforms Stored waveform Y-axis: LIN-MAG (X-axis: LOG-Hz) Y-axis: LOG-MAG (X-axis: LOG-Hz) Overall value The overall value is obtained by taking the square root of the total of power spectra for all frequencies.
180 ──────────────────────────────────────────────────── 8.7.5 Auto Correlation [ACR] Displays the degree of similarity between two points in the input signal separated by time difference (τ). Major applications: ・Detecting a periodic signal contained in a noisy signal with an improvement in signal-to-noise ratio. ・Checking the periodic signal components contained in a noisy waveform, and periodic noise.
181 ──────────────────────────────────────────────────── 8.7.6 Histogram [HIS] Displays the frequencies of the magnitudes of sampled points. Major applications include: ・Determining waveform imbalance ・Determining whether a waveform is artificial or natural from the waveform distribution (most natural waveforms are regular sine waves). Function Horizontal cursor Vertical cursor Pa Volt Linear display of the measurement range of the input unit.
182 ──────────────────────────────────────────────────── 8.7.7 Transfer Function [TRF] Displays the transfer function (frequency characteristics) of the system being measured calculated from input and output signals. Nyquist diagrams can also be displayed, including magnitude and phase information. Major applications include: ・Determining filter frequency characteristics. ・Determining feedback control system stability through Nyquist diagrams.
183 ──────────────────────────────────────────────────── Example Transfer function spectra waveform 8-40, 41, 42, 43, 44, 45, 46, 47 Stored waveform (input signal) Stored waveform (output signal) Y-axis: LIN-REAL (X-axis: LOG-Hz) Y-axis: LIN-IMAG (X-axis: LOG-Hz) Y-axis: LIN-MAG (X-axis: LOG-Hz) Y-axis: LOG-MAG (X-axis: LOG-Hz) Y-axis: PHASE (X-axis: LOG-Hz) Nyquist ──────────────────────────────────────────────────── 8.
184 ──────────────────────────────────────────────────── 8.7.8 Cross Power Spectrum [CSP] Displays the product of the spectra of two input signals. The magnitude and phase information of the frequency components that are common to both signals can be displayed. Major applications: Obtaining frequency components common to two signals. Function Gab = = Horizontal cursor Vertical cursor Fa*･Fb |Fa|･|Fb|{cos(∠θb ｰ ∠θa) + jsin (∠θb ｰ ∠θa)} LIN-Hz Frequency spectrum display as linear units.
185 ──────────────────────────────────────────────────── Example Cross power spectra waveforms Stored waveform 1 Stored waveform 2 Y-axis: LIN-REAL (X-axis: LOG-Hz) Y-axis: LIN-IMAG (X-axis: LOG-Hz) Y-axis: LIN-MAG (X-axis: LOG-Hz) Y-axis: LOG-MAG (X-axis: LOG-Hz) Y-axis: PHASE (X-axis: LOG-Hz) Nyquist ──────────────────────────────────────────────────── 8.
186 ──────────────────────────────────────────────────── 8.7.9 Cross Correlation [CCR] Displays the degree of similarity between two points separated by a time difference (τ) on two signals. The degree of similarity is expressed as a function of the time difference (τ). Major applications: ・Obtaining the phase difference between two signals in time units. ・Obtaining a speed or distance by measuring the time delay.
187 ──────────────────────────────────────────────────── 8.7.10 Unit Impulse Response [IMP] Displays the frequency response of a system in the time domain. A response waveform equivalent to the unit impulse function is obtained by analyzing the input and output signals of the system being measured. Major applications Checking circuit time constants. Function Horizontal cursor Vertical cursor IMP = -1 (Hab) Time Time display.
188 ──────────────────────────────────────────────────── 8.7.11 Coherence [COH] Displays the output signal component that is coherent (interference possible) to the input signal, yielding a value from 0 to 1. Major applications include: ・Evaluation of transfer functions. ・Determining the contribution of individual input lines to the output of multiinput systems. Function Horizontal cursor Vertical cursor COH = Gab*･Gab Gaa･Gbb LIN-Hz Frequency spectrum display as linear units.
189 ──────────────────────────────────────────────────── Example Coherence function waveforms Stored waveform (input signal) Stored waveform (output signal) Coherence ──────────────────────────────────────────────────── 8.
190 ──────────────────────────────────────────────────── 8.7.12 Octave Analysis [OCT] This function displays the spectrum of a noise signal or other signal, using 1/1octave or 1/3-octave band filters with fixed ratio.
191 ──────────────────────────────────────────────────── ・5-band 1/1-octave analysis In this mode, the 400 spectrum lines of regular frequency analysis are bundled into 1/1 octave bands and shown as a bar graph. Example Octave analysis waveforms Stored waveform 1/1 octave analysis 1/3 octave analysis ──────────────────────────────────────────────────── 8.
192 ──────────────────────────────────────────────────── Frequency ranges and measurable range widths (0: 1/3 OCT, X: 1/1 OCT) 1/1 1/3 -8 -24 -23 -22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Center frequency (Hz) 4m 5m 6.3 m 8m 10 m 12.
193 ──────────────────────────────────────────────────── 1 Chapter 9 2 Input Channel Settings 3 4 5 9.
194 ──────────────────────────────────────────────────── 9.2 Input Channel Setting Procedure STATUS STATUS Screen Screen Function MEM REC RMS REC&MEM FFT Format Single Dual Quad Oct Hex ・For details on STATUS screen, refer to each function. X-Y Single X-Y Quad （MEM&REC only） CHANNEL1 Screen 入力チャネルの設定を行います Setting the Waveform Display Color See Section 9.3.1. Setting the Waveform Display Graph Position See Section 9.3.2. Setting the Ｍeasurement Range See Section 9.3.3.
195 ──────────────────────────────────────────────────── CHANNEL2 Screen 入力チャネルの設定を行います Variable Function ・The variable function allows the user to modify the waveform position and size. For details on variable function, refer to Section 9.6.1. SYSTEM Screen 入力チャネルの設定を行います SYSTEM2：SCALING SYSTEM3：COMMENT Zero Offset (Advanced function) ・The scaling function can be used to convert an output voltage from a sensor or similar into a physical quantity. For details on scaling function, refer to Section 9.
196 ──────────────────────────────────────────────────── 9.3 Setting the CHANNEL1 Screen Indicates the CHANNEL screen organization. Press the CHAN key to call up the CHANNEL screen. CHANNEL1 CHANNEL1 screen screen Press the CH.SET key. Setting the analog channel 1 to 16 ch Press the CH.SET key. Setting the analog channel 17 to 32 ch Setting the logic channel CHA to CHH Press the CHAN key. CHANNEL2 CHANNEL1 screen screen Press the CH.SET key.
197 ──────────────────────────────────────────────────── 9.3.1 Setting the Waveform Display Color Set the display color for the waveform. 2 Method Method Flashing cursor 1 Screen: CHANNEL1, DISPLAY Call up the CHANNEL1 or DISPLAY screen. Press the CH.SET key to call the desired channel screen. Move the flashing cursor to the position shown in the figure on the left. Use the function keys to make the selection. 3 4 5 Selection Selection ：Move the arrow up in the selection window.
198 ──────────────────────────────────────────────────── 9.3.2 Setting the Waveform Display Graph Position Set which graph type to use when display format has been set to DUAL, QUAD, OCT or HEX screen display on the STATUS screen. Method Method Flashing cursor Screen: CHANNEL1, DISPLAY Call up the CHANNEL1 or DISPLAY screen. Use the CH.SET key to display the desired channel screen. Move the flashing cursor to the position shown in the figure on the left. Use the function keys to make the selection.
199 ──────────────────────────────────────────────────── 1 9.3.3 Setting the Measurement Range ・The measurement range for each channel is set. ・The set value denotes the voltage value for 1 DIV along the measurement range (vertically). 2 Method Method 3 Flashing cursor Screen: CHANNEL1, DISPLAY Call up the CHANNEL1 or DISPLAY screen. Use the CH.SET key to display the desired channel screen. Move the flashing cursor to the position shown in the figure on the left.
200 ──────────────────────────────────────────────────── 9.3.4 Setting the Input Coupling The input coupling for the input signal is set. Method Method Flashing cursor Screen: CHANNEL1, DISPLAY Call up the CHANNEL1 or DISPLAY screen. Use the CH.SET key to display the desired channel screen. Move the flashing cursor to the position shown in the figure on the left. Use the function keys to make the selection. Selection Selection ：DC coupling ：AC coupling ：The input signal is not connected.
201 ──────────────────────────────────────────────────── 9.3.5 Setting the Magnification/Compression Ratio Along the Voltage Axis ・Specifies the magnification/compression ratio for each channel to be used for display and recording. ・Performs magnification/compression using the center of the screen as reference. Method Method Flashing cursor Screen: CHANNEL1, DISPLAY Call up the CHANNEL1 or DISPLAY screen. Use the CH.SET key to display the desired channel screen.
202 ──────────────────────────────────────────────────── 9.3.6 Setting the Zero Position The position of the zero voltage is set. Method Method Flashing cursor Screen: CHANNEL1, DISPLAY Call up the CHANNEL1 or DISPLAY screen. Use the CH.SET key to display the desired channel screen. Move the flashing cursor to the position shown in the figure on the left. Use the function keys, the JOG control or the POSITION key to make the selection. Selection Selection ：Changes the +10% zero position.
203 ──────────────────────────────────────────────────── Reference ・The zero positions are shown in the figure below. ・It is possible to display the hidden portion of the waveform by setting "0 V" to a proper percentage on the display.
204 ──────────────────────────────────────────────────── 9.3.7 Setting the Low-Pass Filter ・Low-pass filters internal to the input units are set. ・Effective for removing unneeded high-frequency components. Method Method Flashing cursor Screen: CHANNEL1, DISPLAY Call up the CHANNEL1 or DISPLAY screen. Use the CH.SET key to display the desired channel screen. Move the flashing cursor to the point shown in the figure on the left. Use the function keys to make the selection.
205 ──────────────────────────────────────────────────── 9.3.8 Setting the Logic Inputs ・Select the display positions for CHA - CHH (1 probe). ・Select the display color for the logic waveform. Method Method Flashing cursor The logic waveform display positions are as follows. Screen: CHANNEL1, DISPLAY Call up the CHANNEL1 or DISPLAYscreen. Use the CH.SET key to display the logic channel screen. Move the flashing cursor to the Position point of the channel to be set, as shown in the figure on the left.
206 ──────────────────────────────────────────────────── Flashing cursor Move the flashing cursor to the "1, 2, 3, 4" item of the channel for which the display color is to be set, as shown in the figure on the left. Use the the function keys to make the selection. Selection Selection ：Move the arrow up in the selection window. ：Move the arrow down in the selection window. ：Waveform display is enabled. ：Waveform display is disabled. ──────────────────────────────────────────────────── 9.
207 ──────────────────────────────────────────────────── 9.4 Copying Channel Settings Copies any of input channel settings (voltage axis range, input coupling, and low-pass filter), variable function settings, scaling function settings, or comment function settings to another channel. Copying is not possible if the copy source and destination are different, or if the measurement mode is different when copying from and to the same unit.
208 ──────────────────────────────────────────────────── 9.5 Zero Setting 9.5.1 Zero Adjustment ・This function calibrates the 0 V position (ground position) to the selected zero position. Use it to assure precise results. ・Allow the unit to warm up for at least 30 minutes to ensure that the internal temperature of the input units has stabilized. ・Compensation for the measurement range is performed. Method Method Flashing cursor Screen: CHANNEL1, DISPLAY Call up the CHANNEL1 or DISPLAY screen.
209 ──────────────────────────────────────────────────── 9.5.2 Zero Offset This function offsets the input voltage measurement to 0 V to compensate for an actual non-zero input voltage. If the actual input voltage exceeds ±10 DIVs, zero offset cannot be performed. This function is for the voltage and current measurement only. The zero offset is active when power is off, but if the input unit configuration is changed while power is on, the zero offset must be reset.
210 ──────────────────────────────────────────────────── ■Input Voltage During Zero Offset To set the zero offset, the input voltage must be stable. Otherwise, the zero offset depends on the timing of the zero offset setting. With WithFixed FixedInput InputVoltage Voltage With WithVariable VariableInput InputVoltage Voltage +V1+V2 +V1 +V1 +V1-V2 0V 0V +V1 is set to 0V regardless of timing. NOTE The setting value to establish the 0V level is determined at the moment of setting.
211 ──────────────────────────────────────────────────── ■How to determine the zero offset Channel screen Shows that the zero offset is enabled. Display screen Shows that the zero offset is enabled. ──────────────────────────────────────────────────── 9.
212 ──────────────────────────────────────────────────── 9.6 Setting the CHANNEL2 Screen 9.6.1 Setting the Variable Function ・The variable function allows the user to modify the waveform position and size. ・The variable screen serves for setting the lower and upper limit of the waveform display range. ・The allowable waveform display range between the upper and lower limits is 10000 times larger or smaller the currently set range. If the variable function is used, the magnification is limited to 1000 times.
213 ──────────────────────────────────────────────────── Method Method Flashing cursor Screen: CHANNEL2, DISPLAY Call up the CHANNEL2 or DISPLAY screen. Use the CH.SET key to display the desired channel screen. Use the cursor key to move the flashing cursor to the desired channel. Use the function keys to make the selection. Selection Selection ：Variable function is disabled. ：Variable function is enabled.
214 ──────────────────────────────────────────────────── Method-2 Method Screen: CHANNEL2 Using the CH&NUM key Flashing cursor Move the flashing cursor to the desired channel. Move the flashing cursor to the lower or upper limit. Use the function key to select the TEN-KEY INPUT. Selection Selection ：Value up ：Value down ：Reset. The reset value is determined by the measurement range, zero position, and magnification ratio. ：Enter the value using the CH&NUM keys.
215 ──────────────────────────────────────────────────── 9.7 Scaling Function (SYSTEM2) ・The scaling function can be used to convert an output voltage from a sensor or similar into a physical quantity. ・The gauge scale (maximum and minimum values of horizontal axis) and A/B cursor measurement values are displayed in the scaled units. ・Scaling can be performed for every channel. ・Two types of scaling functions are available.
216 ──────────────────────────────────────────────────── 9.7.1 Setting the Scaling Function Method Method Screen: SCALING (SYSTEM2) (1) Select the Scaling method Flashing cursor Press the SYSTEM key to call up the SYSTEM2 screen. Move the flashing cursor to the position shown in the figure on the left. Use the function keys to make the selection. Selection Selection ：Use conversion ratio method ：Use 2-point method (2) Setting the scaling function Flashing cursor Use the CH.
217 ──────────────────────────────────────────────────── (3) Entering the numerical value Using the function key and the JOG control Flashing cursor Move the flashing cursor to the desired channel. Move the flashing cursor to each digit and use the JOG control, the function keys or the CH&NUM key to enter individual digits. (Use the cursor keys to move the column.) Conversion ratio method The setting range for both these items is -9.9999E+9 to +9.9999E+9. 2-point method The setting range is -9.
218 ──────────────────────────────────────────────────── (3) Entering the numerical value Using the CH&NUM key Move the flashing cursor to the desired item. Use the function key to select the TEN-KEY INPUT. Use the CH&NUM key to enter the numerical value. Selection Selection ：Clear the currently displayed comments. ：Performs backspacing. The value that has been input most recently will be displayed if the backspace function is used without entering new data.
219 ──────────────────────────────────────────────────── ■ Combination of the scaling and variable functions The scaling function can be combined with the variable function. If both the scaling and variable functions are to be used in the order of "Variable" → "Scaling," it is necessary to use the previously converted physical quantity (after scaling) to set the upper and lower limits of variable setting .
220 ──────────────────────────────────────────────────── 9.7.2 Scaling Setting Example The example below shows the scaling function of the strain unit.
221 ──────────────────────────────────────────────────── 9.8 Comment Function (SYSTEM 3) 9.8.1 Title Comment Input ・Title comment input is described. ・Three types of title comment are available. (1) SET: Function, time axis range, magnification/compression ratio along the time axis, date and time of trigger (2) COMMENT: Comment of up to 40 characters (3) SET & COMMENT: Both (1) and (2) Method Method Flashing cursor Screen: COMMENT (SYSTEM3) Press the SYSTEM key to call up the SYSTEM3 screen.
222 ──────────────────────────────────────────────────── 9.8.2 Analog Channel Comment Input ・Analog channel comment input is described. ・Three types of analog channel comment are available.
223 ──────────────────────────────────────────────────── When the flashing cursor is moved with the CURSOR keys, the following function key indication appears. Selection Selection ：Display the comment input window. Flashing cursor ：Clear the currently displayed comments. For details on comment input, see Section 9.8.4. When "COMMENT" or "SET & COMMENT" is selected, the comments are printed. (see Section 13.5). ──────────────────────────────────────────────────── 9.
224 ──────────────────────────────────────────────────── 9.8.3 Logic Channel Comment Input ・Logic channel comment input is described. ・One type of logic channel comment is available. (1) COMMENT: Comments can be entered separately for every channel. Method Method Screen: COMMENT (SYSTEM3) Press the SYSTEM key to call up the SYSTEM3 screen. Move the flashing cursor to the position shown in the figure on the left. Use the function keys to select the desired channel screen. (Press the CH.
225 ──────────────────────────────────────────────────── When the flashing cursor is moved with the CURSOR keys, the following function key indication appears. Selection Selection ：Display the comment input window. ：Clear the currently displayed comments. For details on comment input, see Section 9.8.4. When "COMMENT" is selected, the comments are printed. (see Section 13.5). ──────────────────────────────────────────────────── 9.
226 ──────────────────────────────────────────────────── 9.8.4 Character Entry Procedure The procedure for entering the characters for the comments, units, etc. is described. Method Method Screen: COMMENT (SYSTEM3) Move the flashing cursor to the position in which you want to enter the comment. Move the flashing cursor to the desired position. Use the function keys to make the selection. Selection Selection ：Enter a comment. ：Clear a comment (unit). Use the CURSOR keys to select the character.
227 ──────────────────────────────────────────────────── Comment copy A comment made on one channel can be copied to another channel. This can be done for either an analog or logic channel. Method Method Screen: COMMENT (SYSTEM3) Press the SYSTEM key to call up the SYSTEM3 screen. Move the flashing cursor to the channel for which you want to copy the comment. Use the function keys to select the channel to be copied.
228 ──────────────────────────────────────────────────── 9.9 Setting the Display Screen 9.9.1 Entering by CH.SET key Pressing the CH.SET key, enables the measurement conditions for each channel on the display screen to be set or changed. It is possible to make the settings, while monitoring the waveforms in real time on the DISPLAY screen . For details on settings, refer to section 9.3. DISPLAY DISPLAY SCREEN SCREEN Setting the analog channel 1 to 16 OFF Press the CH.SET key, toggle the input screen.
229 ──────────────────────────────────────────────────── 9.9.2 Vernier Function ・Using fine adjustment, the input voltage can be matched to a desired reading. ・For example, an actual input voltage of 1.8 V can be converted to a 2.0 V reading. Method Method Flashing cursor Displays the magnified waveform. × Displays the waveform with no vernier scaling. Displays the compressed waveform. Press the DISP key to call up the DISPLAY screen. Use the CH.
230 ──────────────────────────────────────────────────── 9.9.3 Direct Channel Setting Method Method Press the DISP key to call the DISPLAY screen. Enter the Channel No. using the CH&NUM key, then press the CHENT key, the POSITION key, or the RANGE key to display the input window for the selected channel. The zero position and measurement range can be set for the selected channel using the POSITION and RANGE keys.
231 ──────────────────────────────────────────────────── 9.10 Setting the 8937 VOLTAGE/TEMP UNIT WARNING NOTE A common GND is used for voltage and temperature input on all channels. Never input voltage and temperature simultaneously, since doing so could result in damage to the sample being tested. ・Digital filter and dfift compensation settings cannot be determined from the DISPLAY or CHANNEL screen. Check through the function display that appears when the flashing cursor is moved to the "range" item.
232 ──────────────────────────────────────────────────── 9.10.1 Making the Settings of Voltage Measurement The digital filter can be configured when the measurement range is 500μV to 2 mV. The digital filter is a function which eliminates the noise component by additive averaging inside the amplifier. This results in a data update rate of about 100 μs. Method Method Screen: CHANNEL1, DISPLAY (1) Setting the measurement mode Flashing cursor Call up the CHANNEL1 or DISPLAY screen. Use the CH.
233 ──────────────────────────────────────────────────── (3) Setting the digital filter Move the flashing cursor to the position shown in the figure on the left. Use the function keys to set the digital filter. Flashing cursor Selection Selection ：Digital filter is enabled. (Measurement range: 500μ to 2 mV) ：Digital filter is disabled.
234 ──────────────────────────────────────────────────── 9.10.2 Making the Settings of Temperature Measurement Select the thermocouple type, drift correction and reference junction compensation to be used. Method Method Screen: CHANNEL1, DISPLAY (1) Setting the measurement mode Flashing cursor Call up the CHANNEL1 or DISPLAY screen. Use the CH.SET key to display the desired channel screen. Use the CURSOR key to move the flashing cursor to the graph position.
235 ──────────────────────────────────────────────────── (3) Setting the drift compensation Drift compensation is a function that periodically (about once per second) cancels the variances in the reference voltage that accumulate over time. Flashing cursor Drift compensation：ON Move the flashing cursor to the position shown in the figure on the left. Use the function keys to set the drift compensation. Selection Selection ：Drift compensation is enabled. ：Drift compensation is disabled.
236 ──────────────────────────────────────────────────── Measurement range and upper and lower limits of measurement input Note that the upper and lower limits of measurement input vary according to measurement range. Waveform saturation will result if the limits indicated in the table below are exceeded.
237 ──────────────────────────────────────────────────── 9.11 Setting the 8938 FFT ANALOG UNIT The 8938 FFT ANALOG UNIT contains an internal anti-aliasing filter required for FFT analysis. Enable the anti-aliasing filter when doing FFT analysis. Refer to Section 9.3 for the common settings. Method Method Screen: CHANNEL1, DISPLAY Setting the Anti-aliasing Filter Flashing cursor Call up the CHANNEL1 or DISPLAYscreen. Use the CH.SET key to display the desired channel screen.
238 ──────────────────────────────────────────────────── 9.12 Setting the 8939 STRAIN UNIT For the channel to which the 8939 STRAIN UNIT is assigned, an auto balancing must be executed through the range setup menu. Auto balancing is a function by which the reference output level of the converter is adjusted to the specified zero position. Before the auto balancing is performed, the strain unit must be warmed up for approximately 1 hour after power-on to stabilize its internal temperature.
239 ──────────────────────────────────────────────────── NOTE ・Connect the sensor, make sure there is no input, and execute auto balancing. ・Auto balancing is disabled during measurement. ・The key manipulation is rejected during measurement. ・Repeat the auto balancing when the input unit was changed, when the power is on/off, or when the system is set to reset, when the measurement range is change, when the strain gauge adapter is change.
240 ──────────────────────────────────────────────────── 9.13 Setting the 8940 F/V UNIT The 8940 F/V UNIT can measure frequency, count, pulse duty ratio, voltage and current on each channel (with one measurement type per channel).Refer to Section 9.3 for the common settings. ■Measurement Mode Selection Select the measurement mode from the following: NOTE Frequency Obtains the frequency of the input pulse corresponding to the measured waveform. Count Counts the number of input pulses.
241 ──────────────────────────────────────────────────── 9.13.1 Setting Frequency Mode Select the measurement range. For the Frequency mode, three types of measurement can be performed depending on the measurement range. Frequency can be measured from 0.05 Hz to 5 kHz, RPM can be measured from 5 to 500 rpm, or commercial power can be measured at P50 or P60 Hz. Method Method Screen: CHANNEL1, DISPLAY (1) Setting the measurement mode Flashing cursor Call up the CHANNEL1 or DISPLAY screen. Use the CH.
242 ──────────────────────────────────────────────────── (3) Setting the hold function Move the flashing cursor to the position shown in the figure on the left. Use the function keys to set the digital filter. Flashing cursor Selection Selection ：Move the arrow up in the selection window. ：Move the arrow down in the selection window. ：Holds the last value until the next frequency measurement is confirmed.
243 ──────────────────────────────────────────────────── (5) Setting the threshold value Move the flashing cursor to the position shown in the figure on the left. Use the function keys to make selection. Flashing cursor Selection Selection ：Value up, large step ：Value up, small step ：Value down, small step ：Value down, large step ■ About Hold ON/OFF (1) Difference by ON and OFF of hold in stopping condition. For Frequency and RPM measurement, results are displayed after one confirmation cycle.
244 ──────────────────────────────────────────────────── (2) The following are differences depending on whether Hold is ON or OFF when the frequency drops to 0 Hz from a certain frequency, then increases from that point. 【 Actual Event 】 Frequency drops to 0Hz from a certain frequency, then increases from that point 【 When Hold is ON】 The initial value is held (the signal is not halved), so the result is as shown in the diagram below.
245 ──────────────────────────────────────────────────── 9.13.2 Setting the Count Mode For count mode, the unit of measurement is ’c’ (counts). Method Method Screen: CHANNEL1, DISPLAY (1) Setting the measurement mode Flashing cursor Call up the CHANNEL1 or DISPLAY screen. Use the CH.SET key to display the desired channel screen. Use the CURSOR key to move the flashing cursor to the graph position. Use the function keys or the JOG control to set the COUNT.
246 ──────────────────────────────────────────────────── (3) Setting the pull-up resistance Flashing cursor Set the pull-up resistance on or off. Pull-up resistance is used when connecting to an open collector output signal. For normal measurements, disable the pull-up resistance (set to OFF). Move the flashing cursor to the position shown in the figure on the left. Use the function keys to make selection. Selection Selection Pull-up resistance: OFF ：Pull-up resistance is enabled (ON).
247 ──────────────────────────────────────────────────── 9.13.3 Setting the Pulse Duty Ratio Mode The pulse duty ratio measures the ratio of single High pulses. Method Method Screen: CHANNEL1, DISPLAY (1) Setting the measurement mode Flashing cursor Call up the CHANNEL1 or DISPLAY screen. Use the CH.SET key to display the desired channel screen. Use the CURSOR key to move the flashing cursor to the graph position. Use the function keys or the JOG control to set the DUTY.
248 ──────────────────────────────────────────────────── (3) Setting the threshold value Move the flashing cursor to the position shown in the figure on the left. Use the function keys to make selection. Flashing cursor Selection Selection ：Value up, large step ：Value up, small step ：Value down, small step ：Value down, large step ──────────────────────────────────────────────────── 9.
249 ──────────────────────────────────────────────────── 9.13.4 Setting the Voltage Mode Method Method Screen: CHANNEL1, DISPLAY (1) Setting the measurement mode Flashing cursor Call up the CHANNEL1 or DISPLAY screen. Use the CH.SET key to display the desired channel screen. Use the CURSOR key to move the flashing cursor to the graph position. Use the function keys or the JOG control to set the VOLT. Selection Selection ：Move the arrow up in the selection window.
250 ──────────────────────────────────────────────────── (3) Setting the input coupling Move the flashing cursor to the position shown in the figure on the left. Use the function keys to make selection. Flashing cursor Selection Selection ：DC coupling ：AC coupling ：The input signal is not connected. (2) Setting the pull-up resistance Flashing cursor Set the pull-up resistance on or off. Pull-up resistance is used when connecting to an open collector output signal.
251 ──────────────────────────────────────────────────── 9.13.5 Setting the Current Mode Current measurement is possible by connecting a clamp-on sensor/probe using the Model 9318 or 9319 CONVERSION CABLE. The following table shows which Cable to use with each sensor/probe model. Refer to Section 2.4.4 for connection methods.
252 ──────────────────────────────────────────────────── NOTE ・Up to six channels can be selected for current measurement at the same time on the 8826. However, the clamp check does not work correctly when more than six clamps are installed. Remove any extra clamps so that no more than six are installed before attempting the clamp check. ──────────────────────────────────────────────────── 9.
253 ──────────────────────────────────────────────────── 9.14 Setting the 8947 CHARGE UNIT The 8947 CHARGE UNIT can measure either voltage or acceleration on each channel (one channel per measurement type). Refer to Section 9.3 for the common settings.
254 ──────────────────────────────────────────────────── 9.14.1 Setting the Acceleration Measurement (Charge/Preamp) WARNING When the PREAMP measurement mode is selected, voltage (15 V at 2 mA) is applied internally to the BNC connector when measurement starts. To avoid electric shock and damage to measurement objects, select a measurement mode other than PREAMP or turn the unit off when connecting a sensor or probe to the BNC terminals.
255 ──────────────────────────────────────────────────── (2) Setting the sensor sensitivity Set the sensor sensitivity. Sensor sensitivity is the value of the acceleration sensor. The measurement range varies according to sensor sensitivity. Set the sensor sensitivity before you set the measurement range. Refer to Section 9.14.2. Flashing cursor Move the flashing cursor to the position shown in the figure on the left. Use the function keys to make selection.
256 ──────────────────────────────────────────────────── (4) Setting the input coupling DC coupling is not available in the Charge and Preamp modes. Flashing cursor Move the flashing cursor to the position shown in the figure on the left. Use the function keys to make selection. Selection Selection ：AC coupling ：The input signal is not connected. (5) Setting the Anti-aliasing Filter Flashing cursor Enable the anti-aliasing filter to prevent aliasing distortion.
257 ──────────────────────────────────────────────────── 9.14.2 Setting the Sensor Sensitivity Sensor sensitivity is set in meters-per-second squared (m/s2) units. However, some acceleration sensors use G (gravitational constant) units, in which case the read value should be divided by 9.8 (m/s2). Example 1 If specified sensor sensitivity is written as 1.08 (pC/(m/s2)); sensor sensitivity level should be set to 1.08. Example 2 If specified sensor sensitivity is written as 64.0(pC/G); 64.0 / 9.8 ＝ 6.
258 ──────────────────────────────────────────────────── Example 2 Sensor sensitivity is 0.05 pC/(m/s2): ・Multiply sensor sensitivity by 2 and set 0.1 pC/(m/s2) as the sensor sensitivity. ・Set the scaling. Conversion ratio method 2-point method EU/V : 0.1/0.05 = 2.0000E+00 0.0500E+00 → 0.1000E+00 Offset : 0.0000E+00 0.0000E+00 → 0.0000E+00 EU : m/s2 EU : m/s2 ──────────────────────────────────────────────────── 9.
259 ──────────────────────────────────────────────────── 9.14.3 Setting the Voltage Mode Method Method Screen: CHANNEL1, DISPLAY (1) Setting the measurement mode Flashing cursor Call up the CHANNEL1 or DISPLAY screen. Use the CH.SET key to display the desired channel screen. Use the CURSOR key to move the flashing cursor to the graph position. Use the function keys or the JOG control to set the VOLT. Selection Selection ：Move the arrow up in the selection window.
260 ──────────────────────────────────────────────────── NOTE ・We recommend using an input unit equipped with an anti-aliasing filter that can be enabled to minimize sampling distortions during FFT analysis. ・Refer to Section 21.3.10 for more information about aliasing distortion and anti-aliasing filters. ・If the anti-aliasing filter is on, "A" is printed at the end of the filter settings page during list printing. Refer to Section 13.5. ・Refer to Section 8.3.
261 ──────────────────────────────────────────────────── 1 Chapter 10 2 Trigger Functions 3 4 5 10.1 Outline of the Trigger Function ・The term "trigger" refers to a signal which is used to control the timing for recording start or stop. ・The term "triggering has occurred" refers to the state when such a signal has activated recording start or stop. ・Trigger parameters for the various functions are set using the TRIGGER screen or the DISPLAY screen.
262 ──────────────────────────────────────────────────── 10.2 Operation Sequence ( Trigger mode setting ) Setting Setting the the Trigger Trigger Mode Mode See Section 10.4. This determines whether the trigger is accepted repeatedly after once completing a measurement operation. SINGLE Trigger is registered only once. After START key was pressed, unit starts waveform recording when triggering occurs and continues for preset recording length. Measurement then ends automatically.
263 ──────────────────────────────────────────────────── 1 Select Select the the Trigger Trigger Type Type Analog Trigger Level Trigger ･The analog signal input channels can be used as trigger source. ･The type of trigger that can be used for the various functions is limited. Triggering occurs when the input signal crosses the preset trigger level (voltage) with the preset trigger slope ( , ). ( MEM, REC, REC&MEM, FFT ) Window-in Trigger See Section 10.8.1. See Section 10.8.2.
264 ──────────────────────────────────────────────────── 10.3 Trigger Screen Organization Indicates the Trigger screen organization. Press the TRIG key to call up the TRIGGER screen.
265 ──────────────────────────────────────────────────── 1 10.4 Trigger Mode ・The trigger mode determines the way triggering is used to control operation of the 8826. ・When all trigger sources are OFF, a recording operation begins immediately (free-run operation). Method Method Screen: TRIGGER, DISPLAY Call up the TRIGGER or DISPLAY screen. Move the flashing cursor to the trigger mode item, as shown in the figure on the left. Use the function keys to make the selection.
266 ──────────────────────────────────────────────────── 10.5 Pre-trigger The pre-trigger function serves to record the waveform not only after but also before triggering has occurred. MEM, REC&MEM, FFT Function Using the recording start point as 0% and the recording end point as 100%, the trigger point can be specified in percent. When all trigger sources are set to OFF, pre-trigger cannot be set. Screen: TRIGGER, DISPLAY Method Method Call up the TRIGGER or DISPLAY screen.
267 ──────────────────────────────────────────────────── NOTE ・When the pre-trigger is set, the trigger will not be registered for a certain period after the start of measurement. (During this interval, Pre-trigger standby is shown on the display.) ・When the trigger can be registered, the indication Waiting for trigger is shown on the display. ・In the memory recorder function and FFT function, pre-trigger cannot be set, when the time axis range sets "EXT.".
268 ──────────────────────────────────────────────────── RMS Function In the RMS recorder function, using the recording start point as 0 DIV, the trigger point can be specified in DIV (0, 5, 10 DIV). When all trigger sources are set to OFF, the pre-trigger setting is invalid. Screen: TRIGGER, DISPLAY Method Method Call up the TRIGGER or DISPLAY screen. Move the flashing cursor to the pre-trigger item, as shown in the figure on the left. Use the function keys to make the selection.
269 ──────────────────────────────────────────────────── 10.6 Trigger Timing ( REC only ) ・The moment the trigger occurs, the time related to the waveform being recorded can be set. ・Not only the waveform after the trigger but also the waveform before the trigger can be recorded. Method Method Screen: TRIGGER, DISPLAY Call up the TRIGGER or DISPLAY screen. Move the flashing cursor to the timing item, as shown in the figure on the left. Use the function keys to make the selection.
270 ──────────────────────────────────────────────────── 10.7 Trigger Source AND/OR Linking The analog trigger, logic trigger, external trigger, and timer trigger can be linked with the AND/OR logical operators. OR: Triggering occurs when conditions for one trigger are met. AND: Triggering occurs when conditions for all triggers are met. Screen: TRIGGER Method Method Press the TRIG key to call up the TRIGGER screen. Move the flashing cursor to the trigger source item, as shown in the figure on the left.
271 ──────────────────────────────────────────────────── 10.8 Analog Trigger ・The analog signal input channels can be used as trigger source. ・The type of trigger that can be used for the various functions is limited.
272 ──────────────────────────────────────────────────── 10.8.1 Level Trigger ( MEM and REC only ) ・Triggering occurs when the input signal crosses the preset trigger level (voltage) with the preset trigger slope ( , ). ・When a trigger filter is used, triggering occurs only within the filter width. This is useful to exclude noise.
273 ──────────────────────────────────────────────────── Method Method Screen: TRIGGER, DISPLAY (1) Select the level trigger Call up the TRIGGER or DISPLAY screen. Move the flashing cursor to the position shown in the figure. Use the function keys to select LEVEL. (2) Set the trigger level. Move the flashing cursor to the position shown in the figure on the left. Use the JOG control or the function keys to make the selection.
274 ──────────────────────────────────────────────────── (4) Set the trigger filter Move the flashing cursor to the position shown in the figure on the left. Use the JOG control or the function keys to make the selection. ■ In the MEM, REC&MEM, FFT Function OFF : Trigger filter is disabled 0.1 to 10.0 : Trigger filter is enabled. Filter width is specified using divisions. ■ In the Recorder Function Selection Selection ：Trigger filter is disabled. ：Trigger filter is enabled. Filter width is 10 ms.
275 ──────────────────────────────────────────────────── 10.8.2 Window-In, Window-Out Trigger ■ Window-In Trigger Set upper limit level and lower limit level and activated when the input signal enters the range between these limits. ■ Window-Out Trigger Set upper limit level and lower limit level and activated when the input signal leaves this range.
276 ──────────────────────────────────────────────────── (3) Set the trigger filter Move the flashing cursor to the position shown in the figure on the left. Use the JOG control or the function keys to make the selection. ■ In the MEM, REC&MEM, FFT Function OFF : Trigger filter is disabled 0.1 to 10.0 : Trigger filter is enabled. Filter width is specified using divisions. ■ In the Recorder Function Selection Selection ：Trigger filter is disabled. ：Trigger filter is enabled. Filter width is 10 ms.
277 ──────────────────────────────────────────────────── 10.8.3 Voltage Drop Trigger ( MEM Only ) ・The time axis ranges that can be used are 100μs to 50 ms/DIV. For the FFT function, the frequency axis range is 800 Hz to 400 kHz. ・The 8826 is designed to measure commercial power supplies (50/60 Hz). ・This unit detects momentary voltage drops in commercial power supplies. ・When the peak of the voltage falls lower than the setting level, the trigger will occur.
278 ──────────────────────────────────────────────────── (3) Set the trigger level. Move the flashing cursor to the position shown in the figure. Use the function keys or the JOG control to set the trigger level. The rms value as well as the trigger level are displayed.
279 ──────────────────────────────────────────────────── 10.8.4 Period Trigger This function sets both the period reference voltage and the period range, and measures the rise (fall) period of the set voltage. When the measured period deviates from the specified range, triggering occurs. Method Method Screen: TRIGGER, DISPLAY (1) Select the period trigger. Call up the TRIGGER or DISPLAY screen. Move the flashing cursor to the position shown in the figure. Use the function keys to select PERIOD.
280 ──────────────────────────────────────────────────── (3) Select the trigger direction (slope). Move the flashing cursor to the position shown in the figure. Use the function keys to select the trigger direction (slope). Selection Selection ：Enables triggering on the rising period. ：Enables triggering on the falling period. (4) Set the reference voltage value. Move the flashing cursor to the position shown in the figure. Use the JOG control or the function keys to make the setting.
281 ──────────────────────────────────────────────────── NOTE Since a trigger filter is not prepared for the period trigger, triggering may mistakenly occur due to noise (see the figure below). To prevent such an event, use an appropriate low-pass filter. Trigger level Direction (slope : ) Reference voltage Triggering occurs, since the system judges that the period deviates from the specified range.
282 ──────────────────────────────────────────────────── [ Signal with a period to be measured that is larger than the upper limit of the period trigger (trigger slope: ): ] Signal cycle Reference voltage Example of upper limit 1 Example of upper limit 2 When the upper limit of the set period range appears on the screen before the signal crosses the reference voltage at the set trigger slope, the upper limit is defined as the triggering position.
283 ──────────────────────────────────────────────────── 10.8.5 RMS Level Trigger ・The commercial power supplies, 50/60 Hz and the DC signals can be measured. ・This trigger occurs when the input signal crosses a predetermined trigger level (rms value) in a particular direction ("slope": or ). Input waveform Trigger level Trigger level （Upward trigger direction (slope : ) Downward trigger direction (slope : Method Method ) Screen: TRIGGER, DISPLAY (1) Select the RMS level trigger.
284 ──────────────────────────────────────────────────── (3) Select the trigger direction (slope). Move the flashing cursor to the position shown in the figure. Use the function keys to select the trigger direction (slope). Selection Selection ：Enables triggering on the leading edge. ：Enables triggering on the falling edge. NOTE ・Set the frequency of the measuring object on the STATUS screen. ・’AND’ cannot be set between the trigger sources using the RMS level trigger and the logic trigger.
285 ──────────────────────────────────────────────────── 10.9 Logic Trigger ・The signal of a logic channel can be used as trigger source. ・A trigger pattern and logical operator (AND/OR) are specified, and triggering occurs when the trigger conditions are met. ・A trigger filter can be specified, so that triggering occurs only when the trigger conditions are met within the filter width. Method Method Screen: TRIGGER (1) Set the logic trigger AND/OR linking. Use the TRIG key and the CH.
286 ──────────────────────────────────────────────────── (3) Set the trigger pattern Move the flashing cursor to the position shown in the figure on the left. Select 1 - 4 with the function key display. Make the setting with the function keys. When "CH A" is selected, the setting is for logic input CH A1 - CH A4 from left to right.
287 ──────────────────────────────────────────────────── 10.10 External Trigger Function ・An external signal can be used as trigger source. ・The external trigger is activated by either shorting the EXT TRIG terminal and GND terminal or applying a falling edge signal going below 2.5 V. ・The external trigger facility can be used to synchronize a number of the 8826 units for parallel operation. ・For details for connection, refer to 17.
288 ──────────────────────────────────────────────────── 10.11 Timer Trigger Function ・This function serves to activate recording at preset times. ・Triggering can be performed at constant intervals within a preset start time and end time. Time interval Time interval Start time End time Method Method Screen: TRIGGER (1) Set the timer trigger. Use the TRIG key and the CH.SET key to call up the screen shown in the figure. Move the flashing cursor to the position shown in the figure.
289 ──────────────────────────────────────────────────── (3) Set the trigger interval. Move the flashing cursor to the interval item, as shown in the figure on the left. Use the function keys or the JOG control to make the setting. Selection Selection ：Value up, 10-units ：Value up, 1-units ：Value down, 1-units ：Value down, 10-units ■ Note on use for the timer trigger (1) Set the present time on the system screen first, then set the timer trigger.
290 ──────────────────────────────────────────────────── Relation between timer trigger and AND/OR linking ■ When trigger sources are set to OR All trigger sources are valid. If other trigger sources have been set, triggering can also occur before the start time or after the end time.
291 ──────────────────────────────────────────────────── 10.12 Manual Trigger ・Triggering occurs when the MANU TRIG key is pressed. ・The manual trigger is always activated when the MANU TRIG key is pressed, regardless of trigger source AND/OR linking setting. Method Method Screen: TRIGGER Press the TRIG key to call up the TRIGGER screen. Move the flashing cursor to the position shown in the figure. Use the function keys to make the selection. Selection Selection ：Manual trigger is disabled.
292 ──────────────────────────────────────────────────── ──────────────────────────────────────────────────── 10.
293 ──────────────────────────────────────────────────── 1 Chapter 11 2 Display Screen Operation 3 4 Indicates the DISPLAY screen operation. Setting Setting the the Input Input channel channel See Section 9.9. Scrolling Scrolling the the Waveform Waveform See Section 11.1. Using Usingthe theA/B A/BCursors Cursors See Section 11.2. ・To set a numerical value using the JOG control on the display screen, press the VALUE select key. （The selection window is not displayed.) ・Pressing the CH.
294 ──────────────────────────────────────────────────── 11.1 Scrolling the Waveform The waveform on the display can be scrolled horizontally. Method Method Screen: DISPLAY Press the WAVE SELECT key so that the WAVE LED lights up. Use the JOG/SHUTTLE control to scroll the waveform.
295 ──────────────────────────────────────────────────── 1 11.2 Using the A/B Cursors The A/B cursors can be used to read a time difference, frequency, or potential difference on screen. (When scaling is used, the difference is displayed in the scaling value. See Section 9.7.) Cursors Line cursor Trace cursor Function The value at cursor A and cursor B, and the value between the two cursors can be determined.
296 ──────────────────────────────────────────────────── 11.2.1 Using the Line Cursors (Vertical) The line cursor (vertical) displays the time and period starting from the trigger position. On the recorder, the line cursor (vertical) displays the time and period starting from the initiation of recording. Method Method Screen: DISPLAY Move the flashing cursor to the csr item. Use the function keys to select the "Line cursor (vertical: t, 1/t)".
297 ──────────────────────────────────────────────────── NOTE ・When the A･B CSR SELECT key is used to activate the A/B cursor mode, the trace cursor (X-Y CONT: line cursor) can be used, also if it was set to OFF. ・When the vertical cursor or trace cursor is used, cursor measurements are possible also when one of the cursors is currently off screen. When the cursor is set to A&B and either the A or B cursor is moved, both A and B cursors are shifted onto the screen.
298 ──────────────────────────────────────────────────── 11.2.2 Using the Line Cursors (Horizontal) Used to read a voltage value of the specified channel. A/B cursor can be specified a different channel. Method Method Screen: DISPLAY Move the flashing cursor to the csr item. Use the function keys to select the "Line cursor (horizontal: v)".
299 ──────────────────────────────────────────────────── NOTE ・When the A･B CSR SELECT key is used to activate the A/B cursor mode, the trace cursor (X-Y CONT: line cursor) can be used, also if it was set to OFF. ・Only channels for which a waveform is being displayed can be specified. ・By specifying a different channel for the A and B cursors, a potential difference between the waveforms in the respective channels can be determined.
300 ──────────────────────────────────────────────────── 11.2.3 Using the Trace Cursors Used to read the value at point where the cursor crosses the waveform of the specified channel. A/B cursor can be specified a different channel. Method Method Screen: DISPLAY Move the flashing cursor to the csr item. Use the function keys to select the "Trace cursor".
301 ──────────────────────────────────────────────────── NOTE ・When the A･B CSR SELECT key is used to activate the A/B cursor mode, the trace cursor can be used, also if it was set to OFF. ・When the vertical cursor or trace cursor is used, cursor measurements are possible also when one of the cursors is currently off screen. When the cursor is set to A&B and either the A or B cursor is moved, both A and B cursors are shifted onto the screen.
302 ──────────────────────────────────────────────────── 11.2.4 Using the A/B Cursors (X-Y Screen) The cursor can be used on the X-Y screen. Partial X-Y plotting enables operation of the A/B cursors. Method Method Screen: X-Y DISPLAY Move the flashing cursor to the csr item. Use the function keys to make selection.
303 ──────────────────────────────────────────────────── 11.3 The Magnification/Compression Ratio Along the Time Axis ・The magnification/compression ratio along the time axis can be set. (MEM and REC&MEM) ・By magnifying the waveform, detailed observations can be made. By compressing the waveform, an entire change can be promptly apprehended. ・Magnification/compression of the screen uses the left edge as reference, regardless of the status of the A/B cursor.
304 ──────────────────────────────────────────────────── 11.4 Zoom Function This function divides the memory recorder function display screen into upper and lower windows, so that the regular-size waveform is displayed in the upper window and the waveform enlarged in the time axis direction is displayed in the lower window. Method Method Screen: DISPLAY Press the DISP key to call up the DISPLAY screen. Move the flashing cursor to the position shown in the figure on the left.
305 ──────────────────────────────────────────────────── NOTE ・The A/B cursors can be used only for the waveform on the lower screen. ・During the zoom function, pressing the PRINT key prints the waveform on the lower screen. (The waveform becomes that of the one screen display. If the A/B cursors are used, partial print is applied.) ・When the logic waveform is set so as to be displayed in a position from 5 to 8, it is not displayed.
306 ──────────────────────────────────────────────────── 11.5 Input Level Monitor Function ・The levels of all input waveforms can be monitored in real time. ・Levels are displayed separately for CH1 - CH32 and logical CH A - CH H. ・To select the input channel, use the CH.SET key. See Section 9.9. ・This function is available in all modes. ・The input levels can not be confirmed at FTT function. ・During measurement, the input levels can not be confirmed at RMS function.
307 ──────────────────────────────────────────────────── 11.6 View Function (VIEW key) The view function performs the following operations. It is not available with the FFT function. Position display Shows the position of the currently displayed waveform within the entire recording length. Block display Shows the memory segmentation status (MEM). Position display ・Indicates the position of the currently displayed waveform within the entire recording length.
308 ──────────────────────────────────────────────────── Method Method Screen: DISPLAY Press the VIEW key on the display screen shows at the bottom of the screen the position with respect to the recording length of the displayed part of the waveform. Move the ( ) mark to the desired point with function key. Selection Selection ：Shifts the destination to the left. Time from trigger point（MEM, RMS, REC&MEM） Time from measurement start（REC, REC&MEM） ：Shifts the destination to the right.
309 ──────────────────────────────────────────────────── Block display (MEM only) ・When memory segmentation is being used, the memory block status is shown. ・Sequential save and multi-block function can be used block display. ・Any block in which an input signal is recorded can be called up on the display. Method Method Screen: DISPLAY Press the VIEW key on the display screen shows at the bottom of the screen the position with respect to the recording length of the displayed part of the waveform.
310 ──────────────────────────────────────────────────── ──────────────────────────────────────────────────── 11.
311 ──────────────────────────────────────────────────── 1 Chapter 12 2 SYSTEM Screen Settings 3 4 5 12.1 Overview The SYSTEM screen serves to set the following items which are common to all functions. SYSTEM システム 11 SET UP 各種設定 See Section 12.2. Use channel Start backup Back light saver SYSTEM システム 54 INTERFACE インタフェース See Section 12.5.
312 ──────────────────────────────────────────────────── 12.2 SET UP Screen (SYSTEM 1) Method Method Screen: SET UP (SYSTEM1) Press the SYSTEM key to call up the SYSTEM1 screen. Move the flashing cursor, want to set the item. Use the function keys to make the selection. The item of channel marker, time value display, upper and lower limits of printer, zero position comment, counter printing cannot be used in FFT function. 12.2.
313 ──────────────────────────────────────────────────── 1 12.2.2 Start Backup ・When this function is enabled, the unit will operate as follows: If the power supply is interrupted during recording operation (while the START key LED is lit), and then the power supply is restored, the 8826 goes back into the measurement operation mode, and recording is restarted immediately. ・If the trigger function is used, the unit goes into trigger standby mode. However, this is disabled with the timer trigger.
314 ──────────────────────────────────────────────────── ■ Custom setting (setting the color as desired) Change the R.G.B. setting values of each item on the screen. Move the flashing cursor to the item for which you want to change the setting values, and use the JOG control or the function keys to make the settings. The setting values inside the window applies to the colors of the particular window. When a value is changed, the color of the area corresponding to this item changes.
315 ──────────────────────────────────────────────────── 1 12.2.7 Grid Type ・Selects the type of grid shown on the display screen and drawn on the recording paper. ・On the waveform display screen, the standard and fine grids are defined as the standard, and the standard (dark) and fine (dark) grids are defined as the standard (dark) grids. ・"Time" and "Time (dark)" can be set only during printing.
316 ──────────────────────────────────────────────────── 12.2.10 List & Gauge When a waveform is printed out (except for screen hard copies), the gauge can be printed out at the beginning, and a listing can be printed out at the end. On the wide X-Y screen, the horizontal axis gauge is not printed out. Selection Selection ：No gauges or listing ：Print listing only ：Print gauges only ：Print both gauges and listing 12.2.11 Printer Density Serves to set the printer density.
317 ──────────────────────────────────────────────────── 1 12.2.14 Counter Print In waveform printing, the counter can be printed out. This function is useful to distinguish between similar waveforms. Selection Selection 2 ：Counter Print is not printed. ：Counter Print is printed with date. ：Counter Print is printed with counter name. ・A counter name of up to ten characters can be specified. For information on how to enter the counter name, see Section 9.8.4.
318 ──────────────────────────────────────────────────── 12.3 SCALING Screen (SYSTEM 2) ・The scaling function can be used to convert an output voltage from a sensor or similar into a physical quantity. ・Two types of scaling functions are available. ・The gauge scale (maximum and minimum values of horizontal axis) and A/B cursor measurement values are displayed in the scaled units. ・Scaling can be performed for every channel.
319 ──────────────────────────────────────────────────── 12.5 INTERFACE Screen (SYSTEM 4) Method Method Screen: INTERFACE (SYSTEM4) Press the SYSTEM key to call up the SYSTEM4 screen. Move the flashing cursor, want to set the item. Use the function keys to make the selection. ■ Setting the 8910 CAN ADAPTER You can edit the 8910 CAN ADAPTER setting when the 8910 CAN ADAPTER is connected via the RS-232C interface. Press the key to switch between the interface and 8910 setting screens.
320 ──────────────────────────────────────────────────── When the internal printer is not the output destination, select the color of the output destination. Selection Selection ：Output color data ：Output gray-scale data ：Output monochrome data ：Output reverse monochrome data When floppy disk, PC card, interface, SCSI, or MO drive is selected as the output destination, specify a file name for saving data in BMP format.
321 ──────────────────────────────────────────────────── 12.5.3 Setting the Interface GP-IB interface Settings When the GP-IB interface has been selected, and the 9558 GP-IB CARD is connected, the following items must be set. Mode: ADDRESSABLE / TALK ONLY / DISABLE Address: 0 to 30 Header: OFF/ON RS-232C Interface Settings When the RS-232C interface has been selected, and the 9557 RS-232C CARD is connected, the following items must be set.
322 ──────────────────────────────────────────────────── 12.5.4 Setting the SCSI ID and Target ID Set the SCSI interface. For details, refer to 14.4. SCSI ID Set the ID number of the 8826 on the SCSI bus. The available value range is 0 to 7. Target ID Set the ID number of the MO drive, which will be connected to the 8826, on the SCSI bus. The ID number of the internal MO drive (optional) is set to 4. Therefore, if the internal MO drive has been mounted, the ID number 4 cannot be specified.
323 ──────────────────────────────────────────────────── FTP Server The 8826 use an FTP (File-Transfer-Protocol, compliant with the RFC959) server. You can access files on 8826 internal media from a PC by using FTP client software. Each medium appears as a directory on the FTP server as shown below.
324 ──────────────────────────────────────────────────── ■ Compatible LAN Card The LAN cards below are compatible with the 8826. (As of April 2003) HIOKI 9578 10BASE-T LAN CARD*1 NETGEAR, Inc. FA411 For the latest information, visit the HIOKI website. *1 Sales of the HIOKI 9578 10BASE-T LAN CARD have been discontinued. Please use the commercially available LAN cards recommended by HIOKI. NOTE ■ Setting 1. 2. 3. 4. This section describes the setting procedure.
325 ──────────────────────────────────────────────────── When setting up a network when only using a PC and recorders, not connecting to an existing network, for example, set the parameters as shown below. IP address of PC : 192.168.0.1 IP address of 1st recorder : 192.168.0.2 2nd : 192.168.0.3 3rd : 192.168.0.4 4th : 192. 168.0.5 ↓ ↓ Host name : Enter the desired name (each host name must be unique). Subnet mask : 255.255.255.0 Gateway : OFF DHCP : OFF DNS : OFF Port No.
326 ──────────────────────────────────────────────────── Gateway ON/OFF and IP Address Set the default gateway (default router). Turn this ON and specify the IP of the device serving as a gateway when the 8826 communicates with a device (PC) on a network other than its own network. When the PC is on the same network, use the default gateway of the PC. When the 8826 is connected one-to-one with a PC or both are connected to the same hub, a gateway is not necessary. Turn it off.
327 ──────────────────────────────────────────────────── ・To send a print image by using the PRINT key, set Output Destination on System 4 screen to COMMUNI (interface). Port No. The 8826 uses TCP/IP for communications. TCP/IP allows multiple connections for different types of communications. A port number identifies each connection. The 8826 uses port numbers 8800 to 8809. ・8800 (8826 as the server.): Used by the 9333 remote control application.
328 ──────────────────────────────────────────────────── 12.6 INITIALIZE Screen Setting the clock (TIME SET), clearing waveform data (DATA INITIALIZE), and initialization of setting items (SYSTEM RESET) are available. Method Method Screen: INITIALIZE (SYSTEM5) Press the SYSTEM key to call up the SYSTEM5 screen. Move the flashing cursor, want to set the item. Use the function keys to make the selection. 12.6.
329 ──────────────────────────────────────────────────── 12.6.2 WAVE DATA CLEAR (DATA INITIALIZE) Clears and initializes waveform data stored in memory. Method Method Move the flashing cursor to 2: WAVE DATA CLEAR, and make the setting. Press the F1 [ exec ]. 12.6.3 SYSTEM RESET ・Resets all settings, which except for communications settings (GP-IB, RS232C, SCSI, LAN), to the factory default values. ・The same effect can be achieved by turning power to the unit on while holding down the STOP key.
330 ──────────────────────────────────────────────────── 12.7 SELF CHECK The self-check routine of this unit includes the following five items. Method Method Screen: SELF CHECK (SYSTEM6) Press the SYSTEM key to call up the SYSTEM6 screen. Move the flashing cursor, want to set the item. Use the function keys to make the selection. 12.7.1 ROM/RAM CHECK ・This test checks the internal memory (ROM and RAM) of the 8826. ・The test is non-destructive; it does not affect the contents of RAM.
331 ──────────────────────────────────────────────────── 12.7.3 DISPLAY CHECK ・This test checks the display. ・Two check patterns (solid-color display check and gradation check) are available. Method Method Move the flashing cursor to the 3: DISPLAY CHECK item. Press the F1 [ exec ] to check the display. Press any key to move to the next check. When the test is completed, press any key to return to the self-test setting screen. 12.7.4 KEY CHECK This test checks the key operation.
332 ──────────────────────────────────────────────────── 12.7.5 PC CARD CHECK This test checks the PC card. Method Method Move the flashing cursor to the 5: PC CARD CHECK item. Press the F1 [ exec ] to check the PC card. During the test, all keys are disabled. ■ Check the type, and capacity of the card. When the test is completed, press any key to return to the self-test setting screen. NOTE ・In the case of the interface card, its identification is displayed.
333 ──────────────────────────────────────────────────── 1 Chapter 13 2 Printout of Measurement 3 Data 4 5 Waveform data can be printed out in two formats: waveform or numeric. Seven different procedures can be used to print out the measured waveforms. On the printer, the print density can be changed in five steps.
334 ──────────────────────────────────────────────────── 13.1 Printout of Measurement Data Operating Procedure STATUS screen 測定データの処理 Format See Section 13.2.1. SINGLE DUAL ・Display and record as two graphs. (At the most, 32 analog + 16 logic signals) QUAD ・Display and record as four graphs. (At the most, 32 analog + 8 logic signals) OCT ・Record as eight graphs. (At the most, 4 analog + 4 logic signals) HEX ・Record as sixteen graphs.
335 ──────────────────────────────────────────────────── SYSTEM screen システム設定を行いま SYSTEM1 SET UP See Section 13.4.1. Grid Type 1 Channel Marker Time Value 2 List & Gauge Printer Density Upper-lower print 3 0 position Comment Counter Print 4 SYSTEM2 SCALING See Section 13.4.2. SYSTEM3 COMMENT See Section 13.4.3. SYSTEM4 INTERFACE Output Destination by the COPY key Output Destination by the PRINT key 5 6 See Section 13.4.4.
336 ──────────────────────────────────────────────────── 13.2 Setting the STATUS Screen (printout) 13.2.1 Setting the Format ・The style can be set for showing input signals on the screen display and recording them on the printer. ・The styles single, dual, quad,（DISPLAY screen） , oct・hex（Print only, Display quad style）X-Y single・X-Y quad (dot) and (line) are available. Method Method Screen: STATUS Press the STATUS key to call up the STATUS screen.
337 ──────────────────────────────────────────────────── 1 13.2.2 Setting the Print Mode Select the format, waveform, or numerical value should be used to output measured data and calculation results. Waveform：The smooth print function can be used, but print speed will decrease. (MEM and REC&MEM only) Numerical value：The data spacing interval also must be set. Printing as a waveform 2 3 4 Method Method Screen: STATUS (1) Setting the Print mode Press the STATUS key to call up the STATUS screen.
338 ──────────────────────────────────────────────────── Printing as numeric data Method Method Screen: STATUS (1) Setting the Print mode Press the STATUS key to call up the STATUS screen. Move the flashing cursor to the print mode item, as shown in the figure on the left Use the function keys to select LOGGING. Selection Selection ：Measurement data and the result of calculation are printed as a waveform. ：Measurement data and the result of calculation are printed as numeric data.
339 ──────────────────────────────────────────────────── 13.3 Setting the CHANNEL Screen (printout) 2 13.3.1 Setting the Print Density When data is to be output from the internal printer, the print density (four types) can be set for the waveform color (12 colors). After the desired density is set, the waveform density is changed for the printout or hard-copy run. Method Method Flashing cursor 1 Screen: CHANNEL1 Press the CHAN key to call up the CHANNEL1 screen.
340 ──────────────────────────────────────────────────── 13.3.2 Setting the Waveform Display Graph Position Set which graph type to use when display format has been set to DUAL, QUAD, OCT or HEX screen display on the STATUS screen. Method Method Screen: CHANNEL1, DISPLAY Flashing cursor Press the CHAN key to call up the CHANNEL1 screen. Move the flashing cursor to the position shown in the figure on the left. Use the function keys to make the selection.
341 ──────────────────────────────────────────────────── Set which graph type to use when display format has been set to X-Y screen display on the STATUS screen. (MEM and REC only) Method Method Screen: CHANNEL1, DISPLAY Press the CHAN key to call up the CHANNEL1 screen. Move the flashing cursor to desired channel, and use the function keys to set the waveform color (including displays waveform ON/OFF). Selection Selection ：Move the arrow up in the selection window.
342 ──────────────────────────────────────────────────── 13.4 Setting the SYSTEM Screen (printout) 13.4.1 SET UP Screen (SYSTEM 1) Method Method Screen: SET UP (SYSTEM1) Press the SYSTEM key to call up the SYSTEM1 screen. Move the flashing cursor, want to set the item. Use the function keys to make the selection. Grid Type ・Selects the type of grid shown on the display screen and drawn on the recording paper.
343 ──────────────────────────────────────────────────── Time Value The time from the trigger point and other information can be printed. Selection Selection ：Displays the time from the trigger point (unit: fixed). ：Displays the time from the trigger point (unit: base 60). ：Displays the number of DIV from trigger point. ：Displays the time when a waveform is captured.
344 ──────────────────────────────────────────────────── Counter Print In waveform printing, the counter can be printed out. This function is useful to distinguish between similar waveforms. Selection Selection ：Counter Print is not printed. ：Counter Print is printed with date. ：Counter Print is printed with counter name. ・A counter name of up to ten characters can be specified. For information on how to enter the counter name, see Section 9.8.4.
345 ──────────────────────────────────────────────────── 13.4.2 SCALING Screen ・The scaling function can be used to convert an output voltage from a sensor or similar into a physical quantity. ・Two types of scaling functions are available. ・The gauge scale (maximum and minimum values of horizontal axis) and A/B cursor measurement values are displayed in the scaled units. ・Scaling can be performed for every channel.
346 ──────────────────────────────────────────────────── 13.4.4 INTERFACE Screen Select the output destination for the PRINT and COPY key functions. When using the printer of the 8826, set the output destination to INTERNAL PRINTER. See Section 13.7 for details when using an external printer. Method Method Screen: INTERFACE (SYSTEM4) Press the SYSTEM key to call up the SYSTEM4 screen. Move the flashing cursor to "COPY OUTPUT". Use the function keys to make the selection. See Section 12.5.1.
347 ──────────────────────────────────────────────────── 13.5 Example of Printer Output ■ This section explains the printer type and how to read the printout (in the case of a SINGLE format display screen). MEMORY 100μs/DIV( 100μs ×1) Trig：’98-02-20 12:00:00 500μs 100 ［HIOKI 8826 COMMENT 1ms ］ 1.5ms 90 ［ V］ 80 70 60 50 40 30 20 10 3 0 -10 -20 -30 -40 -50 -60 -70 -80 CH３ -90 -100 ＣＨ３ 200mV f.s.
348 ──────────────────────────────────────────────────── ■ Advanced settings ’98 - 02 - 20 - 0017 HIOKI 8826 MEMORY HiCORDER 2.5ms Upper １： ２： 5ms 7V 4V ch2COMMENT ch1 COMMENT ch1COMMENT ch2 COMMENT Lower １： ２： chH1 chH2 chH3 -7 V chH4 -4 V COMMENT COMMENT COMMENT COMMENT ＣＨ1 ＣＨ2 Item See section Item See section Upper-lower print（ON） 13.4.1 Title（COMMENT） 9.8 0 position comment（ON） 13.4.1 Logic（COMMENT） 9.8 Counter print（DATE） 13.4.1 Channel marker（COMMENT） 13.4.
349 ──────────────────────────────────────────────────── ■ Printing the List (MEM) ＨＩＯＫＩ ８８２６ＭＥＭＯＲＹ ＨｉＣＯＲＤＥＲ Trig-time： ’９８-０２-２０ １２:００:００ STATUS SYSTEM Function： Time/DIV： MEMORY 100μs Memory div： Shot： Format： Roll mode： 20DIV SINGLE OFF Averaging： OFF Wave comparison： OFF Print mode： Smooth print： WAVE OFF Auto print： Auto save： OFF OFF Overlay： OFF OFF Measurement： OFF Wave calculation： OFF Use channel： Start back up： Back light saver： Display color： Beep sound： Language： − − 10
350 ──────────────────────────────────────────────────── Dual Quad ──────────────────────────────────────────────────── 13.
351 ──────────────────────────────────────────────────── Oct Hex ──────────────────────────────────────────────────── 13.
352 ──────────────────────────────────────────────────── X-Y1 Single X-Y Quad ──────────────────────────────────────────────────── 13.
353 ──────────────────────────────────────────────────── Print mode: LOGGING（MEM） Print mode: LOGGING（REC） ──────────────────────────────────────────────────── 13.
354 ──────────────────────────────────────────────────── 13.6 Printing Procedure Internal printer ● External printer ● Auto Print ● − 13.6.2 Real-Time Print ● − 13.6.3 Partial Print ● ● 13.6.4 Screen Hard Copy ● ● 13.6.5 List Print ● − 13.6.6 Report Print ● − 13.6.7 Color print − ● 13.7 Manual Print See Section 13.6.1 ──────────────────────────────────────────────────── 13.
355 ──────────────────────────────────────────────────── 13.6.1 Manual Print This mode serves to print waveform data from the internal memory. MEM, REC&MEM Measurement data from one measurement (entire recording length) are printed. REC, RMS, REC&MEM The measurement data most recently stored in memory is printed out in up to 2000 divisions (10,000 divisions for 64 M words). In the REC&MEM mode, data in up to 1000 divisions (5000 divisions for 64 M words) can be printed out.
356 ──────────────────────────────────────────────────── 13.6.2 Auto Print Printout is carried out automatically after a waveform has been captured for the specified recording length (MEM and FFT). Method Method Screen: STATUS1 (MEM) : STATUS2 (FFT) Press the STATUS key to call up the STATUS1 screen. Move the flashing cursor to the auto print item, as shown in the figure on the left.
357 ──────────────────────────────────────────────────── 13.6.3 Real-Time Print The input waveform and data are printed out continuously in real time (REC, RMS, and REC&MEM). Method Method Screen: STATUS Press the STATUS key to call up the STATUS screen. Move the flashing cursor to the printer item, as shown in the figure on the left. Use the function keys to make the selection.
358 ──────────────────────────────────────────────────── 13.6.4 Partial Print ・This function prints the waveform between the A and B cursors (vertical or trace cursors). MEM, REC&MEM Specified range (out of entire data recorded from a measurement) is printed. REC, RMS Specified range (out of last 2,000 (expended 64 M is 10,000) divisions (magnification: ×1) of data in memory) is printed. REC&MEM Specified range (out of last 1,000 (expended 64 M is 5,000) divisions is printed.
359 ──────────────────────────────────────────────────── 13.6.5 Screen Hard Copy The display contents of the all screens can be printed out as is. Method Method Screen: All Call up the desired screen. Press the COPY key. NOTE ・Even if the gauge is set to the List & Gauge function, the gauge is not printed out in the screen copy mode. ・The screen hard copy function is not available during measurement. ・Output destination by the COPY key can be selected. See Section 12.5.1.
360 ──────────────────────────────────────────────────── 13.6.6 List Print The settings for the various functions made with the STATUS screen, CHANNEL screen etc. can be printed out in list format. Method Method Screen: Excluding DISPLAY While the setting screen (excluding DISPLAY) is displayed, press the PRINT key. NOTE The list to be printed contains the setup conditions for the acquired waveforms. Even if the settings are changed following wave acquisition, the contents of the list remain unchanged.
361 ──────────────────────────────────────────────────── 13.7 External Printer (Color Print) Using the 9559 PRINTER CARD, waveform data can be output on A4-size sheets from the external printer in color or monochrome. PRINT key: Prints out equivalent to 25 divisions waveform data or numerical data. COPY key: Prints out the screen hard copy. Connecting the PRINTER CARD Setting the Ext.Printer Setting the Interface Output destination ・Connect the printer card to the unit. See Section 14.3.1.
362 ──────────────────────────────────────────────────── Waveform print Screen Hard Copy ──────────────────────────────────────────────────── 13.
363 ──────────────────────────────────────────────────── 1 Chapter 14 2 Storing Measurement Data 3 4 A floppy disk, PC card, MO disk, or connected SCSI devise can be used to store and retrieve measurement and setting data. This chapter explains how to use the SAVE, LOAD, INFO, DELETE and FORMAT commands and how to create a directory and perform other related functions. Selecting Selecting the the Media Media Type Type Floppy Disk See Section 14.1.
364 ──────────────────────────────────────────────────── 14.1 Floppy Disk CAUTION ・If a floppy disk is inserted upside down, backwards, or in the wrong direction, the floppy disk or the unit may suffer damage. Before shipping the unit, always remove the floppy disk. ・2DD floppy disks formatted in PC9801 640 K-byte format cannot be used. ・Do not remove the floppy disk while the floppy disk unit is operating (the LED on the floppy disk unit is on). ・The number of bytes depends on the floppy disk format.
365 ──────────────────────────────────────────────────── 1 14.2 MO Disk (Option) CAUTION ・Avoid operation at above 35℃ as far as possible. (If operated at above 35℃, the disk protection function is activated, and it is not possible to save or read data.) ・If a MO disk is inserted upside down, backwards, or in the wrong direction, the MO disk or the unit may suffer damage. Before shipping the unit, always remove the MO disk.
366 ──────────────────────────────────────────────────── 14.2.1 Setting the MO Drive The internal MO drive can be treated as an MO drive in the PC. This can be selected only when the optional 9607 MO Unit is installed. Method Method Screen: INTERFACE (SYSTEM4) Press the SYSTEM key to call up the SYSTEM4 screen. Move the flashing cursor to the position shown in the figure on the left. Use the function keys to make the selection. Selection Selection ：The MO drive is not treated as a drive in the PC.
367 ──────────────────────────────────────────────────── 14.3 PC Card WARNING CAUTION 1 ・Use only PC Cards sold by HIOKI. 2 ・Compatibility and performance are not guaranteed for PC cards made by other manufacturers. You may be unable to read from or save data to such cards. 3 ・Fully insert the PC card into the slot, making sure the side with printed text is facing up. ・If a PC card is inserted upside down, backwards, or in the wrong direction, the PC card or the unit may suffer damage.
368 ──────────────────────────────────────────────────── 14.3.1 Using the PC Card Slot (PC Card with a Cable Only) CAUTION If a PC card is inserted upside down, backwards, or in the wrong direction, the PC card or the unit may suffer damage. To avoid damage to the PC card or connector, observe the cautions listed below. ・Inserting the card with the wrong orientation or in other ways than described above. ・Inserting the card while attached to the connection cable.
369 ──────────────────────────────────────────────────── 1 14.4 SCSI Interface The unit complies with the SCSI standard, and can therefore be used with a wide selection of commercially 3.5-inch MO disk drives. 14.4.1 SCSI Interface Specifications 3 ■General specifications See Section 18.2. ■Electrical specifications 4 Input signals Receiver Input signal levels Maximum load current Minimum hysteresis CMOS receiver with hysteresis Low level: 0 to 0.8 VDC High level 2.0 to 5.
370 ──────────────────────────────────────────────────── 14.4.2 Setting the MO Drive WARNING Do not power off while the MO disk is being accepted. ■ Connection to a MO disk drive ・Select a SCSI cable with a connector corresponding to that of the disk drive. ・Check that both the 8826 and the MO disk drive are powered off. ・Connect firmly the SCSI connector on the rear panel of the 8826 and the MO disk drive. ■ Powering on ・Always power on the MO disk drive before powering on the 8826.
371 ──────────────────────────────────────────────────── ■ The following MO drives have been used satisfactorily by HIOKI. (As of April, 2001) I・O DATA 640 MB MOF-RM640 MOF-SM640 LMO-A636S FMO-640W3 FMO-640WL3 LOGITEC FUJITSU Note that the MO may not be compatible should the MO drive specifications be changed, even if the model No. remains the same. 14.4.3 Setting the SCSI Number Method Method Screen: INTERFACE (SYSTEM4) Press the SYSTEM key to call up the SYSTEM4 screen.
372 ──────────────────────────────────────────────────── 14.5 Selecting the Media Type The media type is specified. Method Method Screen: FILE Press the FILE key to call up the FILE screen. Move the flashing cursor to the (media) item, as shown in the figure on the left. Use the function keys to make the selection. Selection Selection ：Floppy disk media are used. ：PC card media are used. ：Select the external storage connected to the SCSI interface as the recording medium. ：MO disk media are used.
373 ──────────────────────────────────────────────────── 14.6 FORMAT (Initializing) Initialization (formatting) method is described below. Method Method Screen: FILE Press the FILE key to call up the FILE screen. And use the function keys to select the media. Move the flashing cursor to the (Command) item, as shown in the figure on the left. Use the function keys to select the FORMAT. When the format selected the floppy disk, modes appear on the function key display.
374 ──────────────────────────────────────────────────── Use the function keys to select the exec. Use the function keys to select whether to execute or not. Selection Selection ：Execute the format procedure. ：Cancel the format procedure. Formatting time (approx.) the MO disk 128 MB 230 MB 640 MB NOTE REWRITABLE 7 min 10 min 11 min OVERWRITE 6 min 8 min ・Use the MS-DOS format for floppy disks and PC cards. ・The MO-disk format conforms to the super floppy format.
375 ──────────────────────────────────────────────────── 14.7 SAVE ・Stores a file in the directory currently selected on the file screen. ・The waveform data can be stored as binary or text data. Data stored in the text format is not readable by the 8826. ■ What can be recorded and how much (1) Setting state (SET) It is possible to record the setting state for each of the functions. When a multiblock is used, the setup conditions of the use blocks are stored.
376 ──────────────────────────────────────────────────── (6) Hard copy（BMP） The each screen display of the 8826 can be stored in the bit map file (BMP) format. Color Setting File size Color, Gray Approx. 308,278 bytes Mono, Mono (rev) Approx. 38,462 bytes ・The bit map file is one of the standard graphic type of the Windows*1, therefore by using the graphic software, this file format can be used. ・For details on saving the hard copy, refer to Section 12.5.1.
377 ──────────────────────────────────────────────────── 14.7.1 Setting the Saving Items Selecting the Command Method Method Screen: FILE Press the FILE key to call up the FILE screen. And use the function keys to select the media. Move the flashing cursor to the (command) item, as shown in the figure on the left. Use the function keys to select the SAVE. Selecting the store format. Use the CURSOR key to move the flashing cursor to the (type) item, shown in the figure on the left.
378 ──────────────────────────────────────────────────── Selecting the channel for storing data Use the CURSOR key to move the flashing cursor to the (channel) item, shown in the figure on the left. Use the function keys or the JOG control to select the channel. Selection Selection ALL ：Store data for all displayed channels (displayed data only). CH1 ：Store waveform data for channel 1. CH32 ：Store waveform data for channel 32. LOGIC ：Store logic waveform data (all data).
379 ──────────────────────────────────────────────────── File name extension If no file name extension (3 characters after period) is entered, the following extensions are automatically assigned, according to the stored data type.
380 ──────────────────────────────────────────────────── Executing the saving Use the function key to select the Yes. Selection Selection ：Determines the data to sore. ：Cancel the command to be saved. When the waveform data is selected and the memory segmentation function is used, select block saving. Selection Selection ：In sequential saving, all data, from the starting block through the ending block, is saved.
381 ──────────────────────────────────────────────────── ・When "ALL BLOCKS" is selected, files for all blocks as well as a index file for reading the data in one operation are created. ・When batch saving with the Recorder & Memory function, a directory with the same name as the filename is created, and in the directory the measurement data (with REC, MEM extensions) are created together with an index file (R_M). ・In the batch saving, partial saving cannot be carried out.
382 ──────────────────────────────────────────────────── 14.7.2 Text data store example When comment setting is not OFF, the text data are stored as follows. "COMMENT","8826 MEM DATA" "DATE","03-28-2001" "TIME","10:10:00" "NUM_SIGS", 3 "INTERVAL", 1.000E-06 "HORZ_UNITS", "s" "VERT_UNITS", "s", "V", "V" "SIGNAL","TIME", "ACH 1", "ACH 2" "DATA" +0.000000000E+00, -5.9375E-03, +9.3750E-04 Any set comment on each channel is shown.
383 ──────────────────────────────────────────────────── Example 2 When the data is stored in Recorder function (Recorder function, RMS recorder function, recorder data in Recorder&memory function) "COMMENT","8826 REC DATA" "DATE","01-01-1999" "TIME","10:10:00" "NUM_SIGS",13 "INTERVAL", 1.
384 ──────────────────────────────────────────────────── 14.8 LOAD ・The unit settings or the measurement data are transferred from the media to the memory of the unit. ・When loading measurement data, the channel can be specified. ・Measurement data stored by the 8825 can be loaded into the 8826. Selecting the media to load Method Method Screen: FILE Press the FILE key to call up the FILE screen. Move the flashing cursor to the (media) item, shown in the figure on the left.
385 ──────────────────────────────────────────────────── Selecting the channel for loading data Use the CURSOR key, function key or the JOG control to select the "load ch". Executing the loading Select either of the following loading methods. Selection Selection ：Deletes the waveform data from the unit and load the new data. ：Load the new data by overwriting the waveform data already in the unit. （FFT data cannot be overwriting.
386 ──────────────────────────────────────────────────── NOTE ・In case of "OVERWRITE," the settings in the unit are given preference. When the data in the unit differs from the file functions or time-axis range, the data cannot be loaded. ・"OVERWRITE" is not possible with data measured using external sampling. ・The data loading turn: CH1→32, CHA→H ・If the plural data are loaded in the same channel, the data most recently sent remains in the memory.
387 ──────────────────────────────────────────────────── Note on OVERWRITE loading To load the measured data file into the 8826 when it already contains previously measured data, the previous data takes precedence over the new data (in such an event, △ is displayed). Therefore, to reflect all the settings for the waveform data to be loaded, select "REFRESH." When the functions of the new data differ from those of the previous data (i.e.
388 ──────────────────────────────────────────────────── 14.9 INFO File information is displayed. Method Method Screen: FILE Press the FILE key to call up the FILE screen. Select the media. Use the JOG/SHUTTLE control or the CURSOR keys to select the desired file name. Move the flashing cursor to the (command) item, shown in the figure on the left. Use the function keys to select the INFO. Information about the selected file is displayed.
389 ──────────────────────────────────────────────────── 14.10 DELETE Unit settings or measurement data are deleted from the file on selected media. Method Method Screen: FILE Press the FILE key to call up the FILE screen. Select the media. Move the flashing cursor to the (command) item, shown in the figure on the left. Use the JOG control or the CURSOR keys to select the file name. Use the function keys to select the DELETE.
390 ──────────────────────────────────────────────────── Use the function keys to select the "YES". Selection Selection ：Evcutees the data to delete. ：Cancel the command to be deleteed. ──────────────────────────────────────────────────── 14.
391 ──────────────────────────────────────────────────── 14.11 Sorting File (SORT) The file screen is sorted by type. The sort order can be selected from file name, date, file size and type (file extension). Method Method Screen: FILE Press the FILE key to call up the FILE screen. Select the media. Move the flashing cursor to the (Sort) item, shown in the figure on the left. Use the function keys to make the selection.
392 ──────────────────────────────────────────────────── 14.12 Operating the Directory 14.12.1 MK DIR (Making a Subdirectory) A subdirectory is created. Method Method Screen: FILE Press the FILE key to call up the FILE screen. Select the media. Move the flashing cursor to the (command) item, shown in the figure on the left. Use the function keys to select the MK DIR. Use the function keys to select the INPUT. Enter the directory name. For character entry procedure, see Section 9.8.4.
393 ──────────────────────────────────────────────────── 14.12.2 CH DIR (Changing a Directory) A directory is changed. The 8826 provides direct movement only one layer up or down in the directory hierarchy. Method Method Selected directory now. Upper directory Selected directory pass name Screen: FILE Press the FILE key to call up the FILE screen. Select the media. Move a directory.
394 ──────────────────────────────────────────────────── 14.12.3 RM DIR (Deleting a Directory) A directory is deleted. Even if there are files and directories in a directory, the directory can be deleted. Method Method Screen: FILE Press the FILE key to call up the FILE screen. Select the media. Using the JOG control, or the CURSOR key, select the target directory on the bar cursor from the file list. Move the flashing cursor to the (command) item, shown in the figure on the left.
395 ──────────────────────────────────────────────────── 14.13 Printing the File List Prints a list of files (including directories) displayed on the file screen. The printing destination is selected by the "PRINT OUTPUT" setting. Method Method Screen: SYSTEM4 - FILE (1) Setting the output destination. Press the SYSTEM key to call up the SYSTEM4 screen. Move the flashing cursor to the PRINT OUTPUT item, as shown in the figure on the left. Use the function keys to select the "INPRINTER" or "EX-PRINTER".
396 ──────────────────────────────────────────────────── ──────────────────────────────────────────────────── 14.
397 ──────────────────────────────────────────────────── 1 Chapter 15 2 Memory Segmentation 3 Function 4 5 ・This function divides the memory into separate blocks, each of which can be used for waveform recording. ・The memory segmentation function has two modes: sequential save and multiblock. 6 7 Sequential save function ・The recording length (DIV) has priority over the number of memory blocks.
398 ──────────────────────────────────────────────────── 15.1 Using the Sequential Save Function (MEM) ・Input signal capture is carried out continuously using the trigger, storing waveform data successively in each block. ・Any block in which an input signal is recorded can be called up on the display.
399 ──────────────────────────────────────────────────── 1 Screen: STATUS2 Method Method (1) Select the Memory Segmentation Press the STATUS key to call up the STATUS2 screen. Move the flashing cursor to the position shown in the figure on the left. Press the F2 [SEQUEN]. 2 3 Selection Selection ：Disable memory segmentation. 4 ：Enable sequential save function. 5 ：Enable multi-block function.
400 ──────────────────────────────────────────────────── (3) Display block setting Move the flashing cursor to the use block item, as shown in the figure on the left. Use the JOG/SHUTTLE control or the function keys to make the selection. Selection Selection ：Value up. ：Value down. After measurement starts, the displayed block is updated by the recorded block. When measurement is completed, the most recently recorded block is displayed.
401 ──────────────────────────────────────────────────── (6) Setting the follow-up waveform display Waveforms acquired for each block by triggering during the sequential saving process are displayed one by one. (As a result, the dead time is increased.) Move the flashing cursor to the wave display item, as shown in the figure on the left. Use the the function keys to make the selection. Selection Selection (MEM only) ：After all blocks are recorded, the waveform of the last block only is displayed.
402 ──────────────────────────────────────────────────── Relation between trigger mode and sequential save function Measurement Start Measurement Start ・Press the START key and LED light. Data recording starts when trigger condition are met. start block ・Start block is stored. wave display O N: start block waveform is displayed. wave display OFF: waveform is displayed. end block ・End block is stored. wave display O N: end block waveform is displayed. wave display OFF: waveform is displayed.
403 ──────────────────────────────────────────────────── 1 15.2 Using the Multi-Block Function ・Memory is divided into blocks which can be freely selected by the user for storing measurement data. ・Data stored in any block can be called up on the display. ・Data from different blocks can be overlayed on screen for easy comparison.
404 ──────────────────────────────────────────────────── NOTE ・While the multi-block function is being used, the waveform processing calculation and averaging functions are disabled. ・If the blocks have different recording lengths, the overlap block display is disabled. ・The VIEW key can be used to change the displayed memory block or to call up information about the usage status of memory blocks. See Section 11.6.
405 ──────────────────────────────────────────────────── (3) Setting the Recording Length Move the flashing cursor to the position shown in the figure on the left. Use the JOG control or the function keys to make the selection. Selection Selection ：Move the cursor up in the selection window. ：Move the cursor down in the selection window. When the recording length is set to the arbitrary recording-length mode, recording-length setting cannot be performed on the memory segmentation screen.
406 ──────────────────────────────────────────────────── (4) Setting the using block ・Select the number of the memory block for display and recording of the input signal waveform. Move the flashing cursor to the use block item, as shown in the figure on the left. Use the JOG/SHUTTLE control or the function keys to make the selection. Selection Selection ：Value up. ：Value down. ──────────────────────────────────────────────────── 15.
407 ──────────────────────────────────────────────────── (5) Set the ref block. Select a memory block whose waveform data are to be overlaid on screen with the memory block selected for display. The recording start time and time axis range are displayed on the window. Move the flashing cursor to the ref block item. Use the function keys to make the selection. ：Disable ref block ：Enable ref block ：Turns off all ref block settings. ：Sets all blocks as ref blocks.
408 ──────────────────────────────────────────────────── ──────────────────────────────────────────────────── 15.
409 ──────────────────────────────────────────────────── 16 Chapter 16 17 Waveform Operation 18 Function 19 5 16.1 Waveform Parameter Calculation 6 ・Available for memory recorder function and REC&MEM function. The Memory waveform for the Record & Memory function is performed with the Memory recorder function. 7 ・Parameters that were used for captured waveform data and for data after waveform processing can be determined. The result is shown in numeric form.
410 ──────────────────────────────────────────────────── Waveform parameter calculation Operating Sequence Setting setting the the Waveform Waveform Parameter ParameterCalculation Calculation Setting for parameter calculation result Setting for parameter calculation result saving OFF Disable parameter calculation. ON Enable parameter calculation. OFF Disable printout ON Enable printout OFF Storing is disabled.
411 ──────────────────────────────────────────────────── 16.1.1 Making Settings for Waveform Parameter Calculation Method Method Screen: STATUS3 (MEM) Press the STATUS key to call up the STATUS3 screen. Move the flashing cursor to the position shown in the figure on the left. Use the function keys to make the selection. 16 17 18 19 Selection Selection ：Disable parameter calculation. 5 ：Enable parameter calculation. The various setting items are displayed. 6 ：Execute Waveform Parameter Calculation.
412 ──────────────────────────────────────────────────── Choose the setting for parameter calculation result printout and saving ・The internal printer can be printed parameter calculation result. ・The parameter calculation results stores a file in the directory currently selected on the file screen as text data. For details on saving, refer to Section 14.7. Method Method Screen: STATUS3 (MEM) Press the STATUS key to call up the STATUS3 screen.
413 ──────────────────────────────────────────────────── Parameter calculation settings 16 Method Method Screen: STATUS3 (MEM) Move the flashing cursor to the position shown in the figure on the left. Use the function keys to make the selection. Up to four parameter calculations (No. 1 - 4) can be set simultaneously.
414 ──────────────────────────────────────────────────── 16.1.2 Making Settings for Waveform Parameter Evaluation ・Depending on the results of the waveform parameter calculation, a GO (pass) or NG (fail) result is returned. ・Evaluation criteria can be set independently for each of the calculation sets No. 1 - No. 4. Lower limit value NG result Upper limit value GO result Method Method NG result Screen: STATUS3 (MEM) Make the settings for waveform parameter calculation.
415 ──────────────────────────────────────────────────── NOTE ・When waveform parameter measurement and waveform evaluation are carried out simultaneously, the screen displayed waveform evaluation results. Check the results of parameter evaluation using "*" (NG decision) accompanying the figure. Alternatively, a beeping sound can be used for the evaluation instead of the "*" mark; the machine beeps if the result of either parameter or waveform evaluation is NG.
416 ──────────────────────────────────────────────────── Parameter calculation while capturing the waveform Measurement Start ・Press the START key and LED light. ・When the pre-trigger is set, the trigger will not be registered for a certain period after the start of measurement. (During this interval, Pre-trigger standby is shown on the display.) ・When the trigger can be registered, the indication Waiting for trigger is shown on the display.
417 ──────────────────────────────────────────────────── Parameter calculation of measurement data loaded from media Select the calculating data Loading from media ・Press the FILE key to call up the FILE screen. For details on LOAD, refer to Section 14.8. Internal memory data ・Parameter calculation execute the stored measurement data. Setting the calculating range ・This setting calculates the measurement data between A and B cursors. When there is no A and B cursors, calculates all data.
418 ──────────────────────────────────────────────────── 16.2 Calculating Waveform Data ・Waveform processing is possible only for the memory recorder function and REC&MEM function. The Memory waveform for the Record & Memory function is performed with the Memory Recorder function. ・Processing result are displayed as a waveform. ・Use the A/B cursors (vertical or trace cursor) to specify the processing range for the waveform data. ・The following operators can be used to define processing equations.
419 ──────────────────────────────────────────────────── Waveform Processing procedure Defining thewaveform Processing Equation Setting the processing OFF Disable waveform processing. ON Enable waveform processing.
420 ──────────────────────────────────────────────────── 16.2.1 Preparing for Waveform Processing Method Method Screen: STATUS4 (MEM) Press the STATUS key to call up the STATUS4 screen. Move the flashing cursor to the position shown in the figure on the left. Make the setting with the function keys. Selection Selection ：Disable waveform processing. ：Enable waveform processing. The various setting items are displayed. ：Execute Waveform Processing.
421 ──────────────────────────────────────────────────── 16.2.2 Defining the Processing Equation Sixteen processing equations (Z1 - Z16) can be defined. Making the processing equation Method Method Screen: STATUS4 (MEM) Press the STATUS key to call up the STATUS4 screen. Move the flashing cursor to " Z1 to Z16". Use the function keys to select the "enter eqn". Selection Selection ：Enter equation. ：Delete equation. ：Copy equation.
422 ──────────────────────────────────────────────────── When the equations have been input, press the F5 [ exit ] key. If there are any syntax errors in the equations (incomplete bracketing, missing "*", more than eight MOV, SLI, DIF, DIF2, INT, INT2 operators, etc.), a "?" is displayed, and the cursor rests on the error, so that the problem can be corrected. When there are no syntax errors, a "=" is displayed. Make settings for Z2 to Z16 as for Z1. Operators (For details, see Section 21.3.9.
423 ──────────────────────────────────────────────────── Entering the constant values Method Method Screen: STATUS4 (MEM) Move the flashing cursor to the position shown in the figure on the left. Use the function keys to select the enter. The setting range is -9.9999E+29 to +9.9999E+29 (exponent: -29 to +29). Selection Selection ：Enter the constant values. Move the flashing cursor to the desired item with the CURSOR key, enter the constant value with the function key, the JOG control or the CH&NUM key.
424 ──────────────────────────────────────────────────── 16.2.3 Copying an Equation An equation to which an equation number has been assigned (copy source) can be copied to another equation number (copy target). Method Method Screen: STATUS4 (MEM) Move the flashing cursor to one of the Z1 Z16 items. Press the F3 [ copy eqn ]. Use the function keys or the JOG control to specify the number of the equation to be copied. Selection Selection ：Increase equation number. ：Decrease equation number.
425 ──────────────────────────────────────────────────── 16.2.4 Setting the Channel for Recording Processing Results ・The calculation result of equations Z1 - Z16 can be recorded and displayed in a specified channel. ・Processing results can be recorded also in channels where no input unit is installed (but the range of the "number of channels in use" setting cannot be exceeded). Method Method Screen: STATUS4 (MEM) Move the flashing cursor to one of the Z1 Z16 items.
426 ──────────────────────────────────────────────────── 16.2.5 Setting the Display Scale and Floating Decimal Point ・Display scale can be set automatically or manually. ・The channel selected for recording is automatically set to variable display. For details on variable function, refer to Section 9.6.1. Method Method Screen: STATUS4 (MEM) Press the STATUS key to call up the STATUS4 screen. Move the flashing cursor to the position shown in the figure on the left. Press the F1 [ SETTINGS ] key.
427 ──────────────────────────────────────────────────── Automatic setting After calculation, the upper and lower limit is determined from the result, and the variable display settings are made accordingly. Depending on the type of calculation, automatically display scale setting may not be satisfactory. In such a case, use the manual setting procedure. Manual setting Use the variable display setting function on the CHANNEL2 screen to set the upper and lower limit. (See section 9.6.1.
428 ──────────────────────────────────────────────────── 16.2.6 Perform Waveform Processing Waveform processing while capturing the waveform Measurement Start ・Press the START key and LED light. ・When the pre-trigger is set, the trigger will not be registered for a certain period after the start of measurement. (During this interval, Pre-trigger standby is shown on the display.) ・When the trigger can be registered, the indication Waiting for trigger is shown on the display.
429 ──────────────────────────────────────────────────── Waveform processing of data in internal memory or media Select the calculating data Loading from media ・Press the FILE key to call up the FILE screen. For details on LOAD, refer to 14.8. Internal memory data ・Waveform calculation execute the stored measurement data.
430 ──────────────────────────────────────────────────── 16.3 Waveform GO/NG Evaluation ・The waveform evaluation function can be used from the Memory recorder function (single screen, X-Y single screen) and FFT function (single nyquist). ・GO (pass) or NG (fail) evaluation of the input signal waveform can be performed using an evaluation area specified by the user. ・This can serve to detect irregular waveforms. ・Depend on evaluation result, GO and NG terminal output the signal.
431 ──────────────────────────────────────────────────── ・On the waveform evaluation screen, A/B cursors can be used, but a partial printout cannot be made. ・When the waveform evaluation is specified, data equivalent to one screen (25 divisions) is printed out. When waveform data having a recording length of more than 25 divisions is to be printed out, the time axis should be compressed (MEM). See Section 11.3.
432 ──────────────────────────────────────────────────── 16.3.1 Setting the Evaluation Area To evaluate the waveforms, a evaluation area is required. Two methods are available: one is to load the already created evaluation area and settings, and the other is to create a new evaluation area. Loading the already created evaluation area Method Method Screen: FILE Press the FILE key to call the FILE screen. Select the media for loading. Use the bar cursor to select the desired file.
433 ──────────────────────────────────────────────────── Creating a new evaluation area Method Method Screen: STATUS1 (MEM) : STATUS2 (FFT) Press the STATUS key to call the STATUS1 screen (MEM) or STATUS2 screen (FFT). Move the flashing cursor to the position shown in the figure on the left. Use the function key to select the Edit. Make the new evaluation area. See Section 16.3.4. Store the new evaluation area in the internal memory.
434 ──────────────────────────────────────────────────── 16.3.2 Setting the Waveform Evaluation Mode Method Method Screen: STATUS1 (MEM) : STATUS2 (FFT) Move the flashing cursor to the position shown in the figure on the left. Make the setting with the function keys. Selection Selection ：Disable waveform evaluation. ：Return NG if any part of the waveform leaves the evaluation area. ：Return NG if the entire waveform leaves the evaluation area. ：Activate editor for setting up evaluation area.
435 ──────────────────────────────────────────────────── 16.3.3 Setting the GO/NG Stop Mode When waveform evaluation is enabled (OUT or ALL OUT is selected), the "Stop Conditions" menu appears. Specify which evaluation option, GO or NG, should be used to stop the recording. Method Method Screen: STATUS1 (MEM) : STATUS2 (FFT) Move the flashing cursor to the position shown in the figure on the left. Make the setting with the function keys. Selection Selection ：Stop recording on GO result.
436 ──────────────────────────────────────────────────── 16.3.4 Creating the Evaluation Area ・The graphics editor serves to create the waveform evaluation area. ・The area is created by drawing it on screen. Method Method Screen: STATUS1 (MEM) : STATUS2 (FFT) Move the flashing cursor to the comparison item. Press the F5 [ Edit ]. Use these commands to create the evaluation area. When the area has been stored in memory, it can be used for waveform evaluation.
437 ──────────────────────────────────────────────────── 16.3.5 Editor Command Details paint Function key display: 1/3 ：Fills in an enclosed area. Press the F1 [ paint ]. Use the CURSOR keys to move the Pressing mark to the area to be filled in. accelerates the movement of the mark. If the area is not completely enclosed, adjacent areas will also be filled in. Press the F1 [ exec ] key. The area completely enclosed by lines is filled in. Press the F5 [ exit ] key to terminate the paint mode.
438 ──────────────────────────────────────────────────── parallel Function key display: 1/3 ：Shifts the line pattern in parallel direction, to create an area. Press the F2 [ parallel]. Set the amount of shift. ・Use the function keys or the JOG control to set the value. ・Use the F3 [ move csr ] key (or the CURSOR keys) to set the shift amount in the up/down/right/left directions. ・Minimum shift increments is 0.05 movement. Press the F4 [ exec ] key.
439 ──────────────────────────────────────────────────── line Function key display: 1/3 ：Serves to draw a straight or polygonal line. Press the F3 [ line ]. Use the CURSOR keys to move the Pressing mark to the start point of the line. accelerates the movement of the mark. If the area is not completely enclosed, adjacent areas will also be filled in. Press the F1 [ set ] key. Move the mark. A line is drawn between the set point and the mark. Press the F1 [ set ] key again.
440 ──────────────────────────────────────────────────── erase Function key display: 1/3 ：Serves to erase unwanted sections. Press the F4 [ erase ]. Use the CURSOR keys to move the mark to the start point of the section to be erased. Pressing accelerates the movement of the mark. Press the F1 [ set ] key. Press the F2 [ cancel ] key. Cancel the immediately preceding set point. Move the mark to erase the unwanted section. Press the F5 [ exit ] key to terminate the erase mode.
441 ──────────────────────────────────────────────────── reverse Function key display: 2/3 ：Reverses the colors of a filled-in area and the surrounding area. Press the F2 [ reverse ]. Displays filled in area in reverse. all clr Function key display: 2/3 ：Clears the entire editor screen. Press the F3 [ all clear ]. ──────────────────────────────────────────────────── 16.
442 ──────────────────────────────────────────────────── clear Function key display: 2/3 ：Clears a specified rectangular area of the editor screen. Press the F4 [ clear ]. Use the CURSOR keys to move the to be erased. Pressing Press the Move the Press the Press the Press the mark to the start corner of the area accelerates the movement of the mark. F1 [ set ]. mark to the end corner of the area to be erased. F1 [ set ] key again. The rectangular area is cleared. F2 [ cancel ] key.
443 ──────────────────────────────────────────────────── save function key display: 3/3 ：Serves to store the created area in memory. After an area has been stored, it can be used for waveform evaluation. Press the F3 [ save ] key. Saving the media, refer to Section 14.7. end function key display: 3/3 ：Terminates the editor. (1) Store evaluation area in memory and quit editor ・Press the F4 [ end ] key and then the F3 [ save ] key. ・The stored area can be used for waveform evaluation.
444 ──────────────────────────────────────────────────── ──────────────────────────────────────────────────── 16.
445 ──────────────────────────────────────────────────── 16 Chapter 17 17 External Input/Output 18 Terminals 19 5 6 17.1 Connecting the Terminals WARNING Maximum input voltage ratings for the input/output terminals of the 8826 are shown below. To avoid the risk of electric shock and damage to the unit, take care not to exceed these ratings. The external I/O terminal and the unit have a common GND.
446 ──────────────────────────────────────────────────── Recommended wire Single strand: 1.0 mm dia. (AWG #18) Multi-strand: 0.75 mm2 Usable limits Single strand: 0.3 to 1.0 mm dia. (AWG #26 to #18) Multi-strand: 0.3 to 0.75 mm2 (AWG #22 to #20) Strand diameter: minimum 0.18 mm Standard insulation stripping length: 10 mm 10 mm φ1.0 mm (can be used 0.3 to 1.0 mm dia.) Single strand 10 mm Multi-strand 0.75 mm2 (can be used 0.3 to 0.75 mm2） Diameter per strand: minimum 0.18 mm dia.
447 ──────────────────────────────────────────────────── 16 17.2 External Trigger Input Terminal [EXT TRIG] 17 ・An external signal can be used as trigger source. ・Several 8826 units can be synchronized for parallel operation. Signal input method 18 ・Short the terminal to ground, or input a pulse signal (High level: 2.5 to 5.0 V, Low level: 0 to 1.0 V) or a square wave signal. ・Triggering is activated at the falling edge. 19 Voltage range Pulse width High level: 2.5 to 5.0 V, Low level: 0 to 1.
448 ──────────────────────────────────────────────────── 17.3 External Trigger Output Terminal [TRIG OUT] ・When triggering occurs, a signal is output from this terminal. ・Several 8826 units can be synchronized for parallel operation. Trigger output signal Signal type Output voltage range Pulse width Maximum input voltage Open-collector signal, active Low High level: 4.0 to 5.0 V Low level: 0 to 0.5 V Low level:min. 2 ms. -20 to +30 V, max. 500 mA, max. 200 mW 5 V HIGH 4.0 to 5.0V 10 kΩ 4.7 kΩ TRIG.
449 ──────────────────────────────────────────────────── 16 17.4 External Sampling Terminal [EXT SMPL] 17 An external signal can be used to set the sampling rate. Signal input method ・Short the terminal to ground, or input a pulse signal (High level: 2.5 to 5.0 V, Low level: 0 to 1.0 V) or a square wave signal. ・Triggering is activated at the rising edge. 18 19 Voltage range Pulse width Frequency High level: 2.5 to 5.0 V, Low level: 0 to 1.0 V High, Low level: min. 0.
450 ──────────────────────────────────────────────────── 17.5 External Print / Start / Stop Terminal PRINT terminal Printing starts when a signal is input here. START terminal Measurement starts when a signal is input here. STOP terminal Measurement and printing stop when a signal is input here. Signal input method ・Short the terminal to ground, or input a pulse signal (High level: 2.5 to 5.0 V, Low level: 0 to 1.0 V) or a square wave signal.
451 ──────────────────────────────────────────────────── 16 17.6 GO/NG Evaluation Output Terminal When waveform evaluation or waveform parameter evaluation is used, a signal is output from these connectors when the result is GO (pass) or NG (fail). 17 18 Output signal Signal type Open-collector signal, active Low Output voltage range High level: 4.0 to 5.0 V, Low level: 0 to 0.5 V Maximum input voltage -20 to +30 V, max. 500 mA, max. 200 mW Evaluation output interval (min.
452 ──────────────────────────────────────────────────── ──────────────────────────────────────────────────── 17.
453 ──────────────────────────────────────────────────── 16 Chapter 18 17 Specifications 18 19 5 18.
454 ──────────────────────────────────────────────────── Insulation resistance Between the main unit and the power supply, between the input units and the main unit, and between the input units: At least 100 MΩ/500 VDC Dielectric strength One minute at 1.35 kVAC between the main unit and the power supply One minute at 3.
455 ──────────────────────────────────────────────────── Display 16 Display language Japanese/English (selectable) Screen 10.4 inch TFT color LCD display (640 × 480 dots) (TFT color LCDs characteristically have a few defective pixels that do not always light, or that remain lit. We do not consider the presence of six or fewer such defects to indicate a damaged or faulty display. Please be aware of this in advance.
456 ──────────────────────────────────────────────────── 18.2 External Data Storage and Interface Floppy Disk Device 3.5-inch floppy disk drive Capacity ・1.44 MB (2HD) (IBM PC/AT compatible or NEC PC-9801 series with 3mode drive) ・1.2 MB (2HD) (NEC PC-9801 series) ・720 KB (2DD) (IBM PC/AT compatible) Data format MS-DOS format (MS-DOS is the registered trademark of Microsoft Corporation.
457 ──────────────────────────────────────────────────── Interface GP-IB RS-232C LAN Printer 16 ・Complies with IEEE 488.2-1987 ・Remote control including input unit is possible. ・The optional 9558 GP-IB CARD is used. 17 ・Complies with EIA RS-232C ・Remote control including input unit is possible. ・The optional 9557 RS-232C CARD is used. 18 ・Complies with IEEE 802.3i (Ethernet 10BASE-T) ・Remote control including input unit is possible. ・The optional 9578 10BASE-T LAN CARD (option) is used.
458 ──────────────────────────────────────────────────── 18.3 Trigger Unit Trigger Method Digital comparison Trigger modes Function Memory recorder Available trigger modes Single, repeat, auto Recorder, RMS recorder Single, repeat Recorder & Memory Single, repeat, timer FFT Single, repeat, auto Trigger source CH1 to CH32, logic CHA to CHH ・External trigger (With an external trigger, the triggering occurs on a falling edge of 2.5 V, or when the terminals are shorted together.
459 ──────────────────────────────────────────────────── 18.4 Memory Recorder Function Time axis 100, 200, 500μs/DIV 1, 2, 5, 10, 20, 50, 100, 200, 500 ms/DIV 1, 2, 5, 10, 30 s/DIV 1, 2, 5 min/DIV , EXT.
460 ──────────────────────────────────────────────────── 18.
461 ──────────────────────────────────────────────────── 18.6 RMS Recorder Function Time axis 5, 10, 30 s/DIV 1, 2, 5, 10, 30 min/DIV 1 h/DIV Time axis resolution 100 points/DIV (with the printer) Number of channel Analog 32 ch + logic 32 ch Sampling period 20 rms data/s (200 μs fixed)*1 RMS accuracy ±3% f.s. (at 50/60 Hz±2 Hz, DC) (f.s.
462 ──────────────────────────────────────────────────── 18.7 Recorder & Memory Function Time axis ・Recorder 20, 50, 100, 200 ms/DIV (display only) 500 ms/DIV 1, 2, 5, 10, 30 s/DIV 1, 2, 5, 10, 30 min/DIV 1 h/DIV ・Memory Recorder 100, 200, 500 μs/DIV 1, 2, 5, 10, 20, 50, 100, 200, 500 ms/DIV 1, 2, 5, 10, 30 s/DIV 1, 2, 5 min/DIV Time axis resolution 100 points/DIV Sampling period 1/100 of the time axis.......
463 ──────────────────────────────────────────────────── 18.8 FFT Function FFT channel mode 1 ch FFT 2 ch FFT FFT range setting 133 mHz∼400 kHz, EXT.
464 ──────────────────────────────────────────────────── 18.
465 ──────────────────────────────────────────────────── 18.10 Others Comment printing Function, channel, Input range, Zero position, Trigger time, DIV and other information can be printed.
466 ──────────────────────────────────────────────────── 18.11 System Operation System operation is explained according to the block diagram. (1) All system operations are controlled by a 32-bit RISC CPU. (2) The input units incorporates high-speed 12-bit A/D converters which are connected to the main unit via a photocoupler integrated in each input unit. Each channel has its own power supply, to assure electrical isolation from the main unit.
467 ──────────────────────────────────────────────────── 18.12 Maximum Recording Length for Time Axis Settings ■ Memory Recorder Function: Standard (16 M) Time axis range /DIV Sampling period 100μs 200μs Max. recording length 32 ch 5000 DIV 16 ch 10000 DIV 8 ch 20000 DIV 4 ch 40000 DIV 1.00μs 500ms 1s 2s 4s 2.00μs 1s 2s 4s 8s 500μs 5.00μs 2.5s 5s 10s 20s 1ms 10.0μs 5s 10s 20s 40s 2ms 20.0μs 10s 20s 40s 1min 20s 5ms 50.
468 ──────────────────────────────────────────────────── ■ Recorder Function Approximate recording time on one roll (30 m) of recording paper Time axis range Chart speed 20ms/DIV 20mm/s(*1) 1min 50 20(*1) 25min 100 20(*1) 5min 200 20(*1) 10min 500 20 25min 1s/DIV 10 50min 2 5 1hour 40min 5 2 4hour 10min 10 1 8hour 20min 30 20mm/min 1DAY 1hour 1min/DIV 10 2DAY 2hour 2 5 4DAY 4hour 5 2 10DAY 10hour 10 1 20DAY 20hour 30 20mm/h 62DAY 12hour 1h/DIV 10 125DAY
469 ──────────────────────────────────────────────────── 18.13 Memory Capacity and Recording Length Memory capacity and recording length after memory expansion with 9599 MEMORY BOARD.
470 ──────────────────────────────────────────────────── ──────────────────────────────────────────────────── 18.
471 ──────────────────────────────────────────────────── 16 Chapter 19 17 Logic and Analog Inputs 18 19 5 19.1 Logic Inputs 6 WARNING The 8826 has separate inputs for eight probes, but the ground lines of these inputs are not isolated from each other and from the frame ground of the unit (common ground). If voltage having a different ground level is input, a short circuit will occur, depending on the probe type. Do not connect logic probes other than supplied by HIOKI to the logic inputs.
472 ──────────────────────────────────────────────────── 19.1.1 9320 LOGIC PROBE The 9320 is a logic probe with indicator. It is connected to the logic input unit for the 8800 Series MEMORY HiCORDER. It is equipped with a selector for each channel, so that the input type can be switched between digital input and contact input for each channel. This makes it possible to use this unit for a variety of applications such as measurement of electronic circuits and operation timing of mechanical relays.
473 ──────────────────────────────────────────────────── 16 19.1.2 9321 LOGIC PROBE The 9321 is a logic probe with indicator. It is connected to the logic input unit for the 8800 Series MEMORY HiCORDER. This unit detects presence of AC or DC voltage, making it possible to measure the operation timing of relay sequence circuits. Each channel is floated so that connection is easy. Operation ・Set the input selector in accordance with the measured voltage. LOW range: Turning AC 100 V and DC 24 V, etc.
474 ──────────────────────────────────────────────────── 19.2 Analog Inputs Measurement Errors Caused by Signal Source Internal Resistance ・If the signal source impedance is higher than the input impedance of the unit, a measurement error will occur. ・The input impedance of the 8936 ANALOG UNIT is 1 MΩ. If the signal source impedance is 1 kΩ, an error of about 0.1% will occur.
475 ──────────────────────────────────────────────────── 19.2.1 8936 ANALOG UNIT Accuracy at 23℃±5℃, 35% to 85%RH after zero adjustment after 30-minute warming-up time Accuracy guaranteed for 1 year. Measurement ranges 16 17 5, 10, 20, 50, 100, 200, 500 mV/DIV, 1, 2, 5, 10, 20 V/DIV ±0.4%f.s. ±0.1%f.s. -50 to 150% of the recording width (in full-size representation of the measurement range) Temperature characteristic Gain: ±0.025%f.s./℃, Zero position: ±0.02%f.s.
476 ──────────────────────────────────────────────────── 19.2.2 8937 VOLTAGE/TEMP UNIT Accuracy at 23℃±5℃, 35% to 85%RH after zero adjustment after 60-minute warming-up time Accuracy guaranteed for 1 year. Voltage input Measurement ranges 500μV/DIV, 1, 2, 5, 10, 20, 50, 100, 200, 500 mV/DIV 1, 2 V/DIV Zero position setting range -50 to 150% of the recording width (in full-size representation of the vertical axis) DC amplitude accuracy ±0.4% f.s. Zero position accuracy ±0.15% f.s.
477 ──────────────────────────────────────────────────── Reference contact compensation accuracy ±0.1% f.s.±1.5℃ (with internal reference contact compensation and input terminal in state of temperature equilibrium) Temperature characteristic ±0.05%f.s./℃ (sensor: K, E, J, T, N, with drift compensation mode OFF) ±0.25%f.s./℃ (sensor: R, S, B, with drift compensation mode OFF) ±0.04%f.s.
478 ──────────────────────────────────────────────────── 19.2.3 8938 FFT ANALOG UNIT Accuracy at 23℃±5℃, 35% to 85%RH after zero adjustment after 60-minute warming-up time Accuracy guaranteed for 1 year. Number of channels 2 channels Measurement ranges 5, 10, 20, 50, 100, 200, 500 mV/DIV, 1, 2, 5, 10, 20 V/DIV DC amplitude accuracy ±0.4%f.s. Zero position accuracy ±0.1%f.s. Temperature characteristic Gain: ±0.025%f.s./℃, Zero position: ±0.02%f.s.
479 ──────────────────────────────────────────────────── 19.2.4 8939 STRAIN UNIT Accuracy at 23℃±5℃, 35% to 85%RH after auto-balancing, after 60-minutes warming-up time. Accuracy guaranteed for 1 year Number of channels 2 channels Appropriate adapter Strain gauge adapter, Bridge resistance: 120 Ω to 1 kΩ Bridge voltage 2±0.05 Ｖ Balancing Electronic auto-balancing Balance adjustment range ±10000με max Measurement ranges 20, 50, 100, 200, 500, 1000με/DIV DC amplitude accuracy ±（0.5%f.s.
480 ──────────────────────────────────────────────────── 19.2.5 8940 F/V UNIT Accuracy at 23℃±5℃, 35% to 85%RH after zero adjustment after 60-minute warming-up time Accuracy guaranteed for 1 year.
481 ──────────────────────────────────────────────────── Frequency・Count・Duty Measurement Frequency ranges 0.05, 0.1, 0.5, 1,5, 10, 50, 100, 500 Hz/DIV 1, 5 kHz/DIV 5, 10, 50, 100, 500 r/min/DIV Power source frequency ranges: 50 Hz (40 to 60 Hz), 60 Hz (50 to 70 Hz) Frequency accuracy ±0.2%f.s.（except 100 kHzf.s. range） ±0.7%f.s.（100 kHzf.s. range） ±0.
482 ──────────────────────────────────────────────────── 19.2.6 8947 CHARGE UNIT Accuracy at 23℃±5℃, 35% to 85%RH after zero adjustment after 60-minute warming-up time Accuracy guaranteed for 1 year.
483 ──────────────────────────────────────────────────── Charge Input Compatible converter Charge-output type piezoelectric accelerator pickup sensor Measurement sensitivity 0.1 to 10 pC/(m/s2) Measurement range 2,5,10,20,50,100,200,500,1k,2k,5k,10 km/s2/DIV （Measurement sensitivity: 0.1 to 0.25 pC/(m/s2)） 1,2,5,10,20,50,100,200,500,1k,2k,5 km/s2/DIV （Measurement sensitivity: 0.251 to 0.5 pC/(m/s2)） 500m,1,2,5,10,20,50,100,200,500,1k,2 km/s2/DIV （Measurement sensitivity: 0.501 to 1.
484 ──────────────────────────────────────────────────── Voltage input Measurement range 500μ,1m,2m,5m,10m,20m,50m,100m,200m,500m,1,2 V/DIV DC amplitude accuracy ±0.4%f.s. Zero position setting range ±0.15%f.s. Temperature characteristic Gain: ±0.02%f.s./℃, zero position: ±0.03%f.s./℃ Frequency characteristic DC to 400 kHz +1/-3 dB（DC coupling） 1 Hz to 400 kHz +1/-3 dB（AC coupling, low-end cutoff frequency 1Hz± 50%） Noize 75μVp-p typ., 120μVp-p max.
485 ──────────────────────────────────────────────────── 16 Chapter 20 17 Maintenance and Service 18 19 20 20.1 Maintenance and Inspection ■ To ensure the safe operation of this unit, perform maintenance regularly. ・If the unit has been subject to moisture, or if oil and dust have accumulated in the unit interior, the danger of electrical shock or fires resulting from the deterioration of insulation increases greatly.
486 ──────────────────────────────────────────────────── ■ Printer Head Cleaning In normal use, the printer does not require periodic maintenance. However, depending on usage conditions, the thermal head may become contaminated by dust or paper scraps. If the print seems light or if there are dropped sections, clean the head as described below. ■ Method 1 (1) Press the SYSTEM key to call up the SELF CHECK screen. (2) Move the flashing cursor to the Printer check item.
487 ──────────────────────────────────────────────────── 20.2 Unit Replacement Procedure DANGER WARNING To avoid the danger of electric shock, never operate the unit with an input unit removed. If you should wish to use the unit after removing an input unit, fit a blank panel over the opening of the removed unit. To prevent electrical shock, before adding or replacing the input unit, check that the power for the unit is off and the power cord, connector cables and thermocouples are disconnected.
488 ──────────────────────────────────────────────────── 20.3 Adding the 9599 MEMORY BOARD WARNING To prevent electrical shock, before adding the 9599 MEMORY BOARD, check that the power for the unit is off and the power cord, connector cables and thermocouples are disconnected. The fixing screws must be firmly tightened or the input unit may not function up to specification, or may even fail. (1) Remove the connector cables and thermocouples from all input units.
489 ──────────────────────────────────────────────────── 20.4 Removing the Battery Before Discarding the Unit WARNING To avoid electrocution, turn off the power switch and disconnect the power cord and measurement cables before removing the lithium battery. ・The 8826 incorporates a lithium battery for memory backup. ・Before final disposal of the 8826, remove the battery as described below. (1) Verify that the power is switched OFF. (2) Disconnect all connector cables, the power cord and thermocouples.
490 ──────────────────────────────────────────────────── 20.5 Troubleshooting If the unit does not seem to operate normally, check the following points before requesting service. Problem Check LED does not light when the unit is turned on. Is power cord connected properly? There is absolutely no variation in the recorded waveform. Is the "Pretrigger standby" message displayed? (When pretriggering is activated, triggering does not occur until the current waveform is fully captured.
491 ──────────────────────────────────────────────────── 1 Chapter 21 2 Appendix 3 4 5 21.1 Error Messages The unit produces two levels of message to indicate problems. These are distinguished as follows. ■ Error messages ・The "ERROR" indication appears at the bottom of the screen, followed by the message. This remains until the cause of the error is removed, or the STOP key is pressed.
492 ──────────────────────────────────────────────────── ■ Warning Messages ・The "WARNING" indication is displayed on the bottom line of the screen, followed by the message, but disappears after a few seconds. ・Warning messages also disappear if any key is pressed. ・If the "beep sound" item on the system screen is set to ON, then the beeper sounds once only when the message is displayed. ■ Warning Message and explanation WARNING 60：Insert MO disk. ・No disk is present in the MO disk drive. Insert one.
493 ──────────────────────────────────────────────────── WARNING 216：MO drive selected in auto- ・MO drive selected in auto-save, therefore SCSI cannot save. be selected. WARNING 217：SCSI selected in autosave. ・Connected SCSI devise selected in auto-save, therefore MO disk cannot be selected. WARNING 300：Cannot START. （SYSTEM） ・Cannot start measurement from SYSTEM screen. WARNING 301： Invalid（SYSTEM） ・The key pressed is not valid on the system screen.
494 ──────────────────────────────────────────────────── WARNING 358：Change the time axis range (1 ms∼) ・The anti-aliasing filter setting is invalid for the time axis range of 100 to 500 μs. Please change the time axis to between 1 ms and 5 min. WARNING 359：Change the frequency range (40 kHz∼) ・The anti-aliasing filter setting is invalid for the frequency range of 400 to 80 kHz. Please change the frequency range to between 40 kHz and 133 mHz. WARNING 380：No data in Ref．Block.
495 ──────────────────────────────────────────────────── WARNING 626：LAN: Connection timed out. ・Check the connection environment. WARNING 627：LAN: Transfer was aborted. ・Data transmission is interrupted by the key or from the 9333. WARNING 628：LAN: Network error. ・Check the connection environment. WARNING 629：LAN: Server not found or DNS failed. ・Check whether the DNS server is running or set up correctly. WARNING 630：LAN: DHCP failed.
496 ──────────────────────────────────────────────────── 21.2 Glossary A/D Conversion of an analog quantity into a digital quantity Aliasing error Phantom signal components; a phenomenon that occurs if sampling frequency is low in relation to the frequency of the sampled signal (see Section 21.3.2). Active low A signal that becomes active when its voltage changes from High level to Low level.
497 ──────────────────────────────────────────────────── Probe Signal line for supplying the signal to the input PT Abbreviation of (voltage) "potential transformer" Recording length Total amount of sampling data expressed as number of increments Reference junction compensation When thermocouples are used, the temperature difference between the object and the measuring equipment terminal is measured.
498 ──────────────────────────────────────────────────── 21.3 Reference 21.3.1 Sampling ・The 8826 converts the input signal to a digital value, then carries out all internal processing digitally. This process of converting an analog signal to digital values is termed sampling. ・Sampling measures the magnitude of the signal at fixed time intervals (sampling periods). Time Measurement point Sampling period ・The rate of taking these measurements is termed the sampling rate.
499 ──────────────────────────────────────────────────── 21.3.3 Measurement Limit Frequency ・As a general rule, to ensure that sampling catches the peaks of a typical sine wave input on the display, more than 25 samples are required for each input cycle. ・The measurement limit frequency changes depending on the time axis range.
500 ──────────────────────────────────────────────────── 21.3.4 Recorder Function ・One division is equal to 100 samples. ・One piece of sample data collected using the recorder function contains the maximum and minimum voltage obtained in the set sampling period. Therefore, this data is of a certain width.
501 ──────────────────────────────────────────────────── 21.3.5 RMS Recorder Function ・For the RMS recorder function, the sampling period is fixed to 20 RMS value data items per second. ・One division is equal to 100 samples. ■ Calculate one RMS value Sample the 50 Hz or 60 Hz waveforms at 200μs and calculate one RMS value item using two-period data. 141 V [ Two-period ] 50 Hz：40 ms 200 sampling data 60 Hz：33.
502 ──────────────────────────────────────────────────── 21.3.6 Averaging Equations For time axis averaging, summing averaging is synchronized by the trigger. If trigger synchronization is not performed, the results will be meaningless. In the FFT function, unlike time axis averaging, results are valid also if no trigger synchronization is used. But if the characteristics of the input waveform allow triggering, using the trigger for synchronization is recommended.
503 ──────────────────────────────────────────────────── 21.3.7 2-point Method Scaling Equation Y ={ ( SCH - SCL )/(VH - VL )} X + { ( VH ×SCL - VL ×SCH )/(VH - VL )} VH：Voltage high point SCH：Scaling high point VL：Voltage low point SCL：Scaling low point The ranges for the parts enclosed in dotted lines are as follows. -9.9999E+9 ≦｛ ｝value of enclosed part ≦ -1.0000E-9 -9.9999E+9≦｛ ｝value of enclosed part ＝ 0 +1.0000E-9 ≦｛ ｝value of enclosed part ≦ +9.
504 ──────────────────────────────────────────────────── 21.3.8 Parameter Calculation Details (1) Average value Calculates the average value (V) of the waveform data. 【 Equation 】 n AVE = Σ di/n i=1 AVE： average value n： number of data samples di： i-th data of the source channel (2) RMS value Calculates the RMS (effective) value (V) of the waveform data. When scaling is used, the value is calculated after scaling.
505 ──────────────────────────────────────────────────── (8) Period (9) Frequency ・Displays the period (s) and frequency (Hz) of the signal waveform. ・The calculation is performed by determining the middle point of the signal amplitude and then measuring the interval from the point when that level is crossed (in rising or falling direction) to the point when it is next crossed.
506 ──────────────────────────────────────────────────── (13) Area value ・Calculates the area bordered by the signal waveform and the zero position (potential 0 V). ・If the A/B cursors (vertical, trace) are used, the area between the cursors is calculated. 【 Equation 】 n S= l di l ･h Σ i=1 S： Area value n： number of data samples di： i-th data of the source channel h＝Δt： sampling period Shaded area is calculated A cursor B cursor (14) X-Y area value ・Calculates the area (V2) after X-Y plotting.
507 ──────────────────────────────────────────────────── 21.3.9 Details on Operators This section describes the operators used in waveform operation. The parameter "bi" shows the operational result, and "di" shows the source channel, respectively, in which "i" indicates the serial number of data. (1) The four arithmetical operations (＋, ー, ＊, ／) According to the operators set, the four arithmetical operations are performed. (2) Absolute value (ABS) 【 Equation 】 bi =｜di｜(i = 1, 2, ....
508 ──────────────────────────────────────────────────── (8) Differentiation once (DIF) (9) Differentiation twice (DIF2) ・1st and 2nd differential are calculated using the 5th-order Lagrange interpolation equation, whereby data from a range of five surrounding points are used to determine the value of the current point. ・Data corresponding to sample time t1 - tn are taken as d1 - dn and used for calculating the differential.
509 ──────────────────────────────────────────────────── 【Equation for 2st integral】 Point t1 II1 = 0 Point t2 II2 = (I1 +I2)h/2 Point t3 II3 = (I1 +I2)h/2 + (I2 +I3)h/2 ＝ II2 + (I2 +I3)h/2 ↓ Point tn IIn = IIn-1 + (In-1 +In)h/2 II1 to IIn：processing result data (12) Sine (SIN) 【 Equation 】 bi = sin(di) (i = 1, 2, .... n) (13) Cosine (COS) 【 Equation 】 bi = cos(di) (i = 1, 2, .... n) (14) Tangent (TAN) 【 Equation 】 bi = tan(di) (i = 1, 2, ....
510 ──────────────────────────────────────────────────── 21.3.10 FFT Function FFT FFT stands for Fast Fourier Transformation, which is a calculation method used to decompose a time-domain waveform into frequency components. By performing FFT calculation, various calculations can be performed. Concept of time domain and frequency domain The signals measured by this memory recorder have values which correspond to time, that is the signals are functions of time.
511 ──────────────────────────────────────────────────── Fourier transformation and the Inverse Fourier transformation The following equations define the Fourier transformation and the Inverse Fourier transformation. F(ω) = f(t) = |f(t)| = -1 |F(ω)| = f(t)･exp(-jωt)dt F(ω)･exp(jωt)dω The function F(ω)generally results in a complex number, and can be expressed as follows.
512 ──────────────────────────────────────────────────── Application of Fourier transform (transfer function, unit-impulse response) As an application of Fourier transform, this section describes a steady-state response in a static linear system.
513 ──────────────────────────────────────────────────── Aliasing When the frequency of the signal to be measured approaches the sampling frequency, beyond a certain point the measured signal frequency will be lower than the actual signal frequency. In such a case, frequency components that do not exist will appear in the waveform along the frequency axis.
514 ──────────────────────────────────────────────────── Anti-aliasing filter ・In FFT processing, when the frequency bandwidth of the input signal is unlimited, frequency spectrum components that do not exist will appear, due to aliasing. To prevent this, a low-pass filter is required which cuts off the input waveform at 1/2 of the sampling frequency. Such a low-pass filter is called an anti-aliasing filter.
515 ──────────────────────────────────────────────────── (2) When an anti-aliasing filter is used. The aliasing artifacts are removed beautifully. The spectral waveform in the graph is the actual spectrum. Because of the rapid decay characteristic of the anti-aliasing filter, the square wave edges exhibit ringing. ■ Window processing Fourier transform is defined as the integration from negative infinity to positive infinity, but in actual measurement this calculation is not possible.
516 ──────────────────────────────────────────────────── 1000 points Input waveform Stored waveform Waveform as calculated by FFT processing Leakage error When the signal waveform as assumed by the FFT algorithm and the actual waveform are different, the processing result will contain an error. This error is called the leakage error. Window function ・When a limited segment of the input signal is captured, a function can be applied to reduce the leakage error.
517 ──────────────────────────────────────────────────── ・Rectangular window Stored waveform Input waveform Waveform assumed by FFT processing Rectangular window Waveform after window processing ──────────────────────────────────────────────────── 21.
518 ──────────────────────────────────────────────────── ・Hanning window Input waveform Waveform assumed by FFT processing Hanning window Waveform after window processing ・Exponential window Input waveform Waveform assumed by FFT processing Exponential window Waveform after window processing ──────────────────────────────────────────────────── 21.
519 ──────────────────────────────────────────────────── 21.4 File Size 21.4.1 Size of a Waveform File (Binary data) ■ In the memory recorder function (Binary data) Size of a file = header + data Size of a header = 512×(15 + number of analog channels + number of logic probes) Size of a data = (2×number of analog channels + (number of logic probes +1) / 2) ×( recording length (DIV) × 100 +1） (Truncates the decimal portion of the quotient of division.
520 ──────────────────────────────────────────────────── ■ In the Recorder and RMS recorder functions (Binary data) Size of a file = header + data Size of a header = 512×(15 + number of analog channels + number of logic probes) Size of a data = (4×number of analog channels + number of logic probes) ×( recording length (DIV) × 100 +1） Number of logic probes：0 Recording length 25 50 100 200 500 1000 2000 5000 10000 0 ch Number of analog channels 4 ch 8 ch 16 ch 32 ch 49,744 91,808 175,936 344,192 89,744 17
521 ──────────────────────────────────────────────────── 21.4.
522 ──────────────────────────────────────────────────── ■ In the Recorder and RMS recorder functions (text data) (Reference value) Size of a file = header + data Size of a header = 170 + 64×number of analog channels + 165 ×number of logic probes Size of a data =（14 +26×number of analog channels + 18×number of logic probes） ×(recording length (DIV)×100 +1) Number of logic probes：0 Recording length 25 50 100 200 500 1000 2000 5000 10000 Number of analog channels 4 ch 8 ch 16 ch 32 ch 295,544 555,904 1,076,
523 ──────────────────────────────────────────────────── 21.4.4 Real-Time Save Files Size (Memory data) Size of a file ＝ header + data Size of a header ＝ 512×(15 ＋ number of analog channels ＋ number of logic probes) Size of a data＝ 2×number of analog channels×(recording length (DIV)×100＋1) Saved channel number: When saving channels, each analog channel (up to 8) has a corresponding logic channel, and such pairs are regarded as single channels.
524 ──────────────────────────────────────────────────── 21.5 Waveform Viewer (Wv) The waveform viewer provides a simplified view of data transferred to a PC by remote control or data acquisition. The viewer has a CSV conversion function. Converted files may be read by a spreadsheet program. ■System requirements For a PC running Windows 95, 98, Me, Windows NT4.0 SP3 or later, Windows 2000, or Windows XP ■ Installation Install by the following procedure: 1.
525 ──────────────────────────────────────────────────── 21.5.1 Starting the Waveform Viewer In the Windows Start menu, select [Programs] - [HIOKI] - [Wv]. This starts the waveform viewer application. To close the waveform viewer application, in the [File] menu select [Exit]. You can also click the Close button at the top right corner of the window. Toolbar Click the icons in the toolbar for the respective functions.
526 ──────────────────────────────────────────────────── 21.5.2 Waveform Viewer Menus The following is the complete menu tree of the waveform viewer application.
527 ──────────────────────────────────────────────────── Right-click with the mouse in the waveform display screen for the following functions. Right-click with the mouse Wave Control Panel Properties Trace Block List Zoom In Zoom Out Set Magnification Jump Trig A Cursor B Cursor Time Notation DIV Sec Point Trig Date Grid Type None Standard Detail Title Remarks Fixed Color Text Background Grid Font Capture ──────────────────────────────────────────────────── 21.
528 ──────────────────────────────────────────────────── 21.5.3 Using the Waveform Viewer Waveform display To display a waveform it is first necessary to select the file to be displayed. In the [File] menu, select [Open], to display the file selection dialog box. Select a waveform file, and click Open to read in the file, and display the waveform. Changing the time axis scale (zoom function) You can change the time axis scale in the display using the menus or toolbar.
529 ──────────────────────────────────────────────────── Changing waveform scale and position (Waveform Control Panel) You can adjust the display for each channel separately. In the [View] menu, select [Wave Control Panel] to display a dialog box. CH This indicate the list of channel. When a check mark is present the corresponding channel is displayed. Zoom Set the magnification on the voltage axis for the specified channel. Posn Set the position of the specified channel.
530 ──────────────────────────────────────────────────── File list in index file Select [View], then [Block List] to check the file list (block number, file name, time axis range, trigger time) in the index file. Double-click a file in the list opens a new window in which you can check waveform in that file. * This is effective only when reading Sequential, Multi-block, REC&MEM index files.
531 ──────────────────────────────────────────────────── 21.5.4 Conversion to CSV Format You can convert displayed waveform data to a CSV format file. Once in CSV format, the file can be loaded into spreadsheet or other software for further processing. You can either convert the whole data file or a range selected with the cursors. If selecting a range, first set the cursors to the required positions.
532 ──────────────────────────────────────────────────── To save in text formats other than CSV (space delimited or tab delimited), select the desired format from the [Save as type] list. In the [Thin Out] box, enter the number of original samples corresponding to one converted value. Use this when data over a large range (long time interval) is required, but the whole set of sampled data is not required. Select [Time Notation] from among [Sec], [Date], [Trig], and [Point].
533 ──────────────────────────────────────────────────── 21.5.5 Batch Conversion You can convert multiple waveform files CSV files. 1. Select [File] from the menu bar, then select [Batch Conversion] from the File menu. 2. Select the desired files from the file list. To select two or more files, left-click on the desired files while holding down the Shift or Control key. 3. If required, specify the sampling intervals in the [ThinOut] box at which data is to be converted.
534 ──────────────────────────────────────────────────── ──────────────────────────────────────────────────── 21.
INDEX 1 ──────────────────────────────────────────────────────── INDEX -AA/B cursor 295-302 ABS 418, 422, 507 Accessories i ACOS 418, 422, 509 Additional Recording 84, 109, 129 Aliasing 498, 513 Aliasing error 490, 496 ALL-OUT 430, 431, 434 Ambient conditions 10 Analog trigger 271 ANALOG UNIT 14, 30, 195, 475 AND/OR 270, 285, 290 Anti-aliasing filter 237, 256, 259, 260, 514 Area value 409, 413, 506 Arithmetic operators 418, 507 ASIN 418, 422, 509 ATAN 418, 422, 509 Attenuator vi, 27, 496 AUTO 265 Auto ba
INDEX 2 ──────────────────────────────────────────────────────── -DDefining the process 421 DELETE 389 Deleting an Equation 423 DEL.
INDEX 3 ──────────────────────────────────────────────────────── -I- -M- Index file INFO INITIALIZE screen Input Level Monitor Input type 475, 477, 478, 480, Input/output terminal v, 27, INT 418, 422, INT2 418, 422, Interface 319-327, 346, Intermittent 57, 88, 113, 133, Interpolation 51, 89, 91, 379 388 328 306 482 445 508 508 457 379 165 -JJOG 5, 34 -KKEY CHECK Key lock Manual print 355 Manual trigger 291 Maximum input voltage v, 27, 30 Maximum rated voltage v, 27 Maximum sampling 453 Maximum valu
INDEX 4 ──────────────────────────────────────────────────────── -PParallel operation Partial print Partial X-Y plot PC card PC CARD CHECK Peak-to-Peak value Period Period trigger Physical format Position display POSITION key Power cord Power Spectrum Power supply Pre-trigger Print density Print interval 53, 83, 108, PRINT key Print mode 52, 82, 107, Printer density PRINTER CHECK Probe PT -S287, 447, 448 358 64 367, 368, 456 332 409, 413, 504 409, 413, 504 279 373, 496 307 5, 35 i, 11 178 11, 13, 454 266
INDEX 5 ──────────────────────────────────────────────────────── -TTAN Target ID Text 57, 88, 113, Thermal head Thermocouple Threshold value Time axis range 45, 75, 101, Time interval TIME SET Time to maximum value Time to minimum value Time value TIME/DIV key Timer trigger Title Comment 221, Trace cursor Transfer Function Trigger Trigger filter 272, Trigger level 273, Trigger mark Trigger mode Trigger output terminal Trigger pattern TRIGGER screen Trigger slope Trigger source Trigger timing -W418, 422,
INDEX 6 ──────────────────────────────────────────────────────── ─────────────────────────────────────────────────────── INDEX
HIOKI 8826 MEMORY HiCORDER Instruction Manual Publication date: December 2006 Revised edition 12 Edited and published by HIOKI E.E. CORPORATION Technical Support Section All inquiries to International Sales and Marketing Department 81 Koizumi, Ueda, Nagano, 386-1192, Japan TEL: +81-268-28-0562 / FAX: +81-268-28-0568 E-mail: os-com@hioki.co.jp URL http://www.hioki.co.
1. 赤部分修正 2. 背表紙の厚さを設定する。（表裏両方） HIOKI USA CORPORATION 6 Corporate Drive, Cranbury, NJ 08512, USA TEL +1-609-409-9109 / FAX +1-609-409-9108 8826A981-12 06-12H Printed on recycled paper INSTRUCTION MANUAL HEAD OFFICE 81 Koizumi, Ueda, Nagano 386-1192, Japan TEL +81-268-28-0562 / FAX +81-268-28-0568 E-mail: os-com@hioki.co.jp/ URL http://www.hioki.co.jp/ 8826 MEMORY HiCORDER 3. 背表紙の厚さに合わせて形名・品名の幅を調整 する。 4. Acobat Distiller で、用紙に「12mm 超表紙」を選 択して PDF ファイルを作成する。 （モノクロにすることを忘れないように） 5. 作成した PDF ファイルを 「¥¥172.
