INSTRUCTION MANUAL For...
Contents Introduction Inspection Safety Notes Notes on Use Chapter Summary i ii iv vi xi Chapter 1 Product Overview 1 1.1 Major Features 1.2 Identification of Controls and Indicators Chapter 2 Installation and Preparation 2.1 Installation of the Product 2.2 Power Supply and Ground Connections 2.2.1 Connecting the AC Power Supply 2.2.2 Functional Grounding of the 8855 2.3 Power On/Off 2.4 Connection of the Input Product 2.4.1 8950, 8952, 8953-10, 8955 INPUT UNITs 2.4.2 8951 VOLTAGE/CURRENT UNIT 2.4.
Chapter 3 Recorder & Memory Function 31 3.1 Overview of the Recorder & Memory Function 31 32 3.2 Operation Sequence (REC&MEM) 3.3 STATUS Settings (REC&MEM: STATUS Screen) 34 3.3.1 3.3.2 3.3.3 3.3.4 3.3.5 Setting the Function Mode Setting the Time Axis Range Setting the Recording Length Display Function Setting the Display Format 35 36 37 38 39 3.4 Setting the Additional Recording Function 3.5 Settings on the Waveform Display Screen (REC&MEM) 3.
4.3.15 Setting the Wave Colors 4.3.16 Setting the Display Scale 4.3.17 Octave Filter Setting 69 70 71 4.4 Printout of FFT Processing Results (When 8994 PRINTER UNIT is installed.) 72 4.4.1 Setting the Print Mode 4.4.2 Setting the Auto Print Function 72 72 4.5 4.6 4.7 4.8 Setting the Auto Save Function 73 Settings on the Waveform Display Screen (FFT) 75 76 Start and Stop Operation (FFT) 77 FFT Analysis Function 4.8.1 Storage Waveform [STR] 4.8.2 Linear Spectrum [LIN] 4.8.3 RMS Spectrum [RMS] 4.8.
5.8 Setting the 8951 VOLTAGE/CURRENT UNIT 5.8.1 Setting Voltage Measurement 5.8.2 Setting Current Measurement 5.9 Setting the 8952 DC/RMS UNIT 5.9.1 Setting Voltage Measurement 5.9.2 Setting RMS Measurement 5.10 8953-10 HIGH RESOLUTION UNIT 5.11 Setting the 8954 VOLTAGE/TEMP UNIT 5.11.1 Setting Voltage Measurement 5.11.2 Setting Temperature Measurement 5.12 Setting the 8955 F/V UNIT 5.12.1 Frequency, Rotation, and Commercial Power Frequency Measurement Settings 5.12.2 Integration Measurement Settings 5.
8.4 Event Search 8.5 Time Search 8.6 Moving Cursors to the Search Points Chapter 9 Waveform Evaluation Function 9.1 Waveform GO/NG Evaluation (MEM, FFT Function, Power Monitor Function) 9.2 Setting the Waveform Area 9.3 Setting the Waveform Evaluation Mode 9.4 Setting the GO/NG Stop Mode 9.5 Creating the Evaluation Area 9.6 Editor Command Details Chapter 10 Printout of Measurement Data 10.1 Printout of Measurement Data Operating Procedure 10.2 Setting the STATUS Screen (printout) 10.2.
Appendix APPENDIX 1 Appendix 1 Error Messages Appendix 2 Glossary Appendix 3 Reference Appendix 3.1 Sampling Appendix 3.2 Aliasing Appendix 3.3 Measurement Limit Frequency Appendix 3.4 Recorder Function Appendix 3.5 Averaging Equations Appendix 3.6 "2-point method" Scaling Equation Appendix 3.7 Waveform Parameter Calculation Details Appendix 3.8 Details on Operators Appendix 3.
i ──────────────────────────────────────────────────── Introduction Thank you for purchasing the HIOKI "8855 MEMORY HiCORDER." To obtain maximum performance from the instrument, please read this manual first, and keep it handy for future reference. About This Manual This manual is the Advanced edition (Instruction Manual) for the "8855 MEMORY HiCORDER." It describes the advanced functions and procedures for the 8855.
ii ──────────────────────────────────────────────────── 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. If damage is evident, or if it fails to operate according to the specifications, contact your dealer or Hioki representative.
iii ──────────────────────────────────────────────────── 220H PAPER WINDER 9303 PT 9318 CONVERSION CABLE (for the 9270 to 9272, 9277 to 9279) 3273 CLAMP ON PROBE (DC to 50 MHz) 3273-50 CLAMP ON PROBE (DC to 50 MHz) 3274 CLAMP ON PROBE (DC to 10 MHz) 3275 CLAMP ON PROBE (DC to 2 MHz) 3276 CLAMP ON PROBE (DC to 100 MHz) 9018-10 CLAMP ON PROBE (10 to 500 A, 40 Hz to 3 kHz) * 9132-10 CLAMP ON PROBE (20 to 1000 A, 40 Hz to 1 kHz) * 9270 CLAMP ON SENSOR (20 A, 5 Hz to 50 kHz) * 9271 CLAMP ON SENSOR (200 A, 5 Hz
iv ──────────────────────────────────────────────────── Safety Notes This manual contains information and warnings essential for safe operation of the instrument and for maintaining it in safe operating condition. Before using the instrument, be sure to carefully read the following safety notes. DANGER This instrument is designed to comply with IEC 61010 Safety Standards, and has been thoroughly tested for safety prior to shipment.
v ──────────────────────────────────────────────────── Measurement categories (Overvoltage categories) This instrument complies with CAT II safety requirements. To ensure safe operation of measurement instruments, IEC 61010 establishes safety standards for various electrical environments, categorized as CAT I to CAT IV, and called measurement categories. These are defined as follows. CAT I Secondary electrical circuits connected to an AC electrical outlet through a transformer or similar device.
vi ──────────────────────────────────────────────────── 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 module and the input terminals of the instrument are shown below. To avoid the risk of electric shock and damage to the instrument, take care not to exceed these ratings.
vii ──────────────────────────────────────────────────── DANGER External I/O terminal connections A common GND is used for the external I/O terminals (START, STOP, GO, NG, EXT_OUT, EXT_TRIG, EXT_OUT, and EXT_SMPL terminals) and the 8855 instrument. The terminals are not isolated.
viii ──────────────────────────────────────────────────── DANGER WARNING 10:1 and 100:1 probe connections The maximum rated to-voltage does not change when using a 9665 10:1PROBE or a 9666 100:1PROBE. To avoid electrical shock or damaging the 8855 instrument, make probe connections in such a manner that the method for the probe, and make sure the to-ground voltage does not exceed the rated maximum. The maximum input voltage is 1,000 V DC for the 9665 10:1PROBE, and 5,000 V DC for the 9666 100:1PROBE.
ix ──────────────────────────────────────────────────── CAUTION Installation Enviroment This instrument should be installed and operated indoors only, between 5 and 40 and 30 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.
x ──────────────────────────────────────────────────── NOTE Using a printer Avoid using the printer in hot, humid environments, as this can greatly reduce printer life. Using the connection cords Use only the specified connection cord (9197, 9198). Using a non-specified cord may result in incorrect measurements due to poor connection or other reasons. Recording paper (when the 8994 PRINTER UNIT is installed) Use only recording paper specified by Hioki.
xi ──────────────────────────────────────────────────── Chapter Summary Chapter 1 Product Overview Contains an overview of the instrument and its features. Chapter 2 Installation and Preparation Explains how to set the instrument up for measurement. Chapter 3 Recorder and Momory Function Explains how to use the recorder and memory functions of the instrument. Chapter 4 FFT Function Explains how to use the FFT functions of the instrument.
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) Waveform collection performance Using the 8950 ANALOG UNIT, the 8951 VOLTAGE/CURRENT UNIT, and the 8952 DC/RMS UNIT with the 8855, it is possible to record waveforms at 20 MS/s with a resolution of 12 bits. Furthermore, using the 8953-10 HIGH RESOLUTION UNIT, it is possible to record waveforms at 1 MS/s with a resolution of 16 bits.
3 ──────────────────────────────────────────────────── (9) On-line help On-line help guides the user through operation steps and various functions. Furthermore, you can easily display help using the setting item in the lower part of the screen. 1 2 (10) Scaling function By setting the physical amount and the unit to be used for 1 V input, the measurement result can be converted into any desired scale. (11) Additional recording function When enabled, the memory is regarded as printer paper.
4 ──────────────────────────────────────────────────── 1.2 Identification of Controls and Indicators 1 2 3 26 4 5 25 6 7 8 24 9 23 10 11 12 13 14 15 16 17 18 19 20 21 22 Front Panel ──────────────────────────────────────────────────── 1.
5 ──────────────────────────────────────────────────── 1 1 F1 to F10 key Serve to select setting items. 2 HELP key Provides on-line help. 3 CHAN key Causes the display to show the Channel screen which serves for making input channel settings. 4 DISP key Causes the display to show measurement and analysis results. 5 FILE key Causes the display to show the File screen which serves for reading, storing, etc. the waveform data etc. 6 TRIG key Causes the display to show the Trigger screen.
6 ──────────────────────────────────────────────────── 22 21 20 19 18 23 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Right Side Panel 1 AC power switch Switches on or off the AC power supply. 2 AC connector The supplied power cord must be plugged in here. 3 Function ground terminal (GND) Connects to the earth. 4 External sampling terminal Allows input of an external sampling signal.
7 ──────────────────────────────────────────────────── 18 FD slot Floppy disk is inserted. 19 MO slot MO disk is inserted. 20 Input module slots These slots accept input modules. 21 Fastening screw Secures the plug-in instrument. 22 Analog input connector Unbalanced analog input. (on ANALOG UNIT) 23 Blowing slot 1 3 2 2 Upper Panel Left Side Panel 2 2 Rear Panel 1 Handle 2 Ventilation slots 3 Printer Bottom Panel Serves for transporting the 8855.
8 ──────────────────────────────────────────────────── ──────────────────────────────────────────────────── 1.
9 ──────────────────────────────────────────────────── 1 Chapter 2 2 Installation and Preparation 3 4 2.1 Installation of the Product 5 6 Installation orientation Install the instrument on a flat, level surface. 7 8 9 10 11 12 13 14 A ──────────────────────────────────────────────────── 2.
10 ──────────────────────────────────────────────────── Ambient conditions Temperature Humidity Ventilation 5 to 40oC, 23 5oC recommended for high-precision measurements. 30 to 80% RH (no condensation); 50 10% RH (no condensation) recommended for high-precision measurements. Take care not to block the ventilation openings and assure proper ventilation. When using the instrument in an upright position, take care not to block the openings on both side.
11 ──────────────────────────────────────────────────── 2.2 Power Supply and Ground Connections 2.2.1 Connecting the AC Power Supply WARNING Check the following points before connecting the instrument 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 instrument. (1) Power supply matches Rated supply voltage (100 to 240 V AC: Voltage fluctuations of 10% from the rated supply voltage are taken into account.
12 ──────────────────────────────────────────────────── 2.2.2 Functional Grounding of the 8855 When the 8855 is used in noise-prone environments, connect the functional grounding terminal to improve noise characteristics. Functional grounding 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 V AC: Voltage fluctuations of 10% from the rated supply voltage are taken into account.) and rated supply frequency (50/60 Hz). The instrument is correctly installed (Section 2.1). Power cord is correctly connected (Section 2.2). The instrument is properly grounded.
14 ──────────────────────────────────────────────────── 2.4 Connection of the Input Product 2.4.1 8950, 8952, 8953-10, 8955 INPUT UNITs WARNING CAUTION NOTE Never connect the probe to the 8855 while the probe is already connected to the measurement object. Otherwise there is a risk of electric shock. Use only the specified input cord with this probe. An insulating BNC connector is provided to prevent electric shock.
15 ──────────────────────────────────────────────────── 2.4.
16 ──────────────────────────────────────────────────── CAUTION When disconnecting the BNC connector, be sure to release the lock before pulling off the connector. Forcibly pulling the connector without releasing the lock, or pulling on the cord, can damage the connector. Connecting the Connection cord (for voltage measurement) Groove of the BNC Connector guide 1. Align the BNC connector with the guide groove of the 8855 input connector, and turn clockwise while pressing in to lock the connector.
17 ──────────────────────────────────────────────────── Instrument's sensor connector Conversion cable plug Conversion cable connector Adapted clamp's plug Connecting the 9318 CONVERSION CABLE 1. Align the groove on the conversion cable plug with the sensor connector on the 8951 and push inward until the connector locks into place. 2. Align the groove on the conversion cable connector with the adapted clamp on sensor plug and push inward until the connector locks into place. 3.
18 ──────────────────────────────────────────────────── 2.4.3 8954 VOLTAGE/TEMP UNIT WARNING CAUTION NOTE Do not connect the connection cord to the 8855 while the instrument is connected to the object being measured. This may cause electric shock. A common GND is used for the voltage and temperature input on each channel. When using the voltage and temperature inputs simultaneously, do not connect them both at the same time as this may damage the object you are measuring.
19 ──────────────────────────────────────────────────── How to remove the covering from the thermocouple 25 mm 10 mm External covering Internal covering Thermocouple wire Recommended diameter φ 0.4 mm to 1.2 mm (AWG26 to 16) NOTE To install and remove the thermocouple, use a tool such as a screwdriver. The push-button terminal block on the 8954 VOLTAGE/TEMP UNIT is for use with a thermocouple. Only connect the thermocouples specified (types K, J, E, T, N, R, S, B, and W).
20 ──────────────────────────────────────────────────── 2.5 Logic Probe Connection DANGER The logic input and 8855 instrument share a common ground. Therefore, if power is supplied to the measurement object of the logic probe and to the 8855 from different sources, an electric shock or damage to the equipment may result.
21 ──────────────────────────────────────────────────── 2.6 9018-10, 9132-10 CLAMP ON PROBE Connection DANGER 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.
22 ──────────────────────────────────────────────────── 2.7 9322 DIFFERENTIAL PROBE Connection DANGER When using grabber clips, the 9322's maximum rated voltage to earth is 1500 V AC or DC (CAT ll) / 600 V AC or DC (CAT lll); when using alligator clips, it is 1000 V AC or DC (CAT ll) / 600 V AC or DC (CAT lll). To avoid electrical shock and possible damage to the instrument, never apply voltage greater than these limits between the input channel terminals and chassis, or across the input of two 9322s.
23 ──────────────────────────────────────────────────── 2.8 9665 10:1 PROBE / 9666 100:1 PROBE DANGER NOTE 10:1 and 100:1 probe connections The maximum rated to-voltage does not change when using a 9665 10:1PROBE or a 9666 100:1PROBE. To avoid electrical shock or damaging the 8855 instrument, make probe connections in such a manner that the method for the probe, and make sure the to-ground voltage does not exceed the rated maximum.
24 ──────────────────────────────────────────────────── 2.9 Loading Recording Paper (when the 8994 PRINTER UNIT is installed) 1. Press the stock cover and open it. Stock cover Head up/down lever 2. Put down the head up/down lever. Holder 3. Insert the attachments into the ends of the roll of recording paper and set the paper into its holder. Attachment Printer roller 4.
25 ──────────────────────────────────────────────────── 5. Align the edges of the recording paper you pulled out of the printer with the edges of the recording paper set into the holder. If the edges of the recording paper are not aligned exactly, the paper will come out crooked when printing. 6. Raise the head up/down lever. 7. Pull the recording paper to the outside through the printer exit slot in the stock cover. 8.
26 ──────────────────────────────────────────────────── 2.10 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.
27 ──────────────────────────────────────────────────── 2.11 Notes on Measurement DANGER Input/output terminal Maximum input voltage ratings for the input module and the input terminals of the instrument are shown below. To avoid the risk of electric shock and damage to the instrument, take care not to exceed these ratings.
28 ──────────────────────────────────────────────────── WARNING CAUTION In order to avoid accidents from electric shock, before removing or replacing an input module, check that the connection cords and thermocouple are disconnected, turn off the power, and remove the power cord. To avoid the danger of electric shock, never operate the instrument with an input module removed. To use the instrument after removing an input module, install a blank panel over the opening of the removed module.
29 ──────────────────────────────────────────────────── 2.11.1 Maximum Input Voltage 8950 ANALOG UNIT/ 8952 DC/RMS UNIT 8953-10 HIGH RESOLUTION UNIT 8855 GND H 8950 8953-10 L 400 V DC max.
30 ──────────────────────────────────────────────────── 2.11.2 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.
31 ──────────────────────────────────────────────────── 1 Chapter 3 2 Recorder & Memory Function 3 4 5 3.1 Overview of the Recorder & Memory Function 6 The recorder and memory function has the following features. (1) After being stored in the internal memory, input signal data can be displayed and printed. 7 (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.
32 ──────────────────────────────────────────────────── 3.2 Operation Sequence (REC&MEM) Preparation See Chapter 2 Installation of the Instrument Turn on the power Connect the inputs Basic Settings Settings on the STATUS screen See Section 3.3 Press the STATUS key to display the STATUS screen. Setting the printer Function Select the recorder and memory function. Time axis range (Recorder/Memory waveform setting) Determine the speed with which the input signal waveform is captured.
33 ──────────────────────────────────────────────────── Setting the input channel 1 See Quick Start Chapter 6 Settings on the channel screen Settings the advanced function Waveform display color Waveform display graph Voltage axis range Input coupling Logic input Magnification/compression along voltage Zero position Zero adjustment Low-pass filter Variable function (See Section 5.2) 2 3 4 Scaling function (See Section 5.3) Comment function (See Section 5.4) Vernier function (See Section 5.6.
34 ──────────────────────────────────────────────────── 3.3 STATUS Settings (REC&MEM: STATUS Screen) Press the STATUS key to access the STATUS screen. This section explains how to set the STATUS screen of the recorder and memory function. See the corresponding sections for items that can be set in the Waveform display or CHANNEL screens. Waveform display screen: See Section 3.5 CHANNEL screen: See Quick Start Section 6.3 See Sections 3.3.1 3.3.2 3.3.3 3.3.5 3.3.
35 ──────────────────────────────────────────────────── 1 3.3.1 Setting the Function Mode The 8855 has four function modes. Select the Recorder and Memory functions. Procedure 2 Screen: STATUS, CHANNEL, Waveform display, TRIGGER, SYSTEM 1. Use the Menu keys to display the desired screen. 2. Move the flashing cursor to the top position. 3. Select the REC&MEM function key display.
36 ──────────────────────────────────────────────────── 3.3.2 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) The sampling period for the sampling recorder is set by the memory. Screen: STATUS Procedure 1 Procedure 2 NOTE 1. Use the Menu keys to display the desired screen. 2.
37 ──────────────────────────────────────────────────── 3.3.3 Setting the Recording Length The length of recording for one measurement operation (number of DIV) can be set. The recording lengths for the recorder and memory are set separately. Two setting methods are available. SELECT Select the recording length. ARBITRARY Variable recording length can be selected by the user. Screen: STATUS, Waveform display Procedure 1 1. 2. 3. 4.
38 ──────────────────────────────────────────────────── 3.3.4 Display Function The type of display waveform can be selected. Procedure Screen: STATUS 1. Press the STATUS key to display the STATUS screen. 2. Move the flashing cursor to the Function item. 3. Use the function keys to make a setting.
39 ──────────────────────────────────────────────────── 3.3.5 Setting the Display 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, and oct are available. Procedure Screen: STATUS Flashing cursor 1. Press the STATUS key to display the Status screen. 2. Move the flashing cursor to the Format item, as shown in the figure on the left. 3. Use the function keys to select the display format.
40 ──────────────────────────────────────────────────── 3.4 Setting the Additional Recording Function This records, regarding the memory as though it were recording paper. As waveforms captured by the recorder are stored in the instrument's memory, this machine can be operated as a paper recorder. The memory capacity of 32 M words can accommodate up to 10000 divisions of waveform data. With 128 M words (after optional memory expansion), waveform data of up to 40000 divisions can be saved.
41 ──────────────────────────────────────────────────── NOTE Time values output to the printer and displayed on the screen with the additional recording function enabled are equal to those of the most recently acquired waveforms. Therefore, when measuring waveforms in a different time axis range, always take that difference into consideration. When the 10000 (128 M words: 40000, 512 M words: 160000) DIV has been reached, old data will be overwritten.
42 ──────────────────────────────────────────────────── 1 Setting items 4 6 Selection 2 5 3 Explanation 1. Function MEM, REC, FFT, REC&MEM Select function. 2. Trigger mode (recorder waveform) SINGLE, REPEAT, TIMER Select trigger mode. 3. Pre-trigger (memory waveform) 0 to 100%, -95% Set the Pre-trigger. 4. Time Axis Range 10 ms/DIV to 1 h/DIV (REC) 10 µs/DIV to 5 min/DIV (MEM) Set the speed for inputting and storing the waveform of the input signal.
43 ──────────────────────────────────────────────────── 3.6 Setting The Printer (Only When The 8994 PRINTER UNIT Is Installed) 3.6.1 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. Logging The data spacing interval also must be set. Procedure Screen: PRINTER (1) Setting the printer format 1.
44 ──────────────────────────────────────────────────── 3.6.2 Setting the Real-time Printing Function The input waveform (recorder waveform) is continuously printed in real time. Procedure Screen: PRINTER 1. Press the SYSTEM key to display the PRINTER screen. 2. Move the flashing cursor to the Realtime Print item. 3. Use the function keys to make a setting. Function display Meaning : Printing is disabled. : Printing is enabled.
45 ──────────────────────────────────────────────────── 3.7 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 and the recording is completed. The Auto Save function stores a file in the directory currently selected on the file screen. Procedure Screen: STATUS 1. Press the SYSTEM key to display the STATUS screen. 2. Move the flashing cursor to the Auto Save item. 3.
46 ──────────────────────────────────────────────────── 9. When Media is selected, the Storage method item appears. Function display Meaning When [Make directory] is set to [NONE], auto: save is cancelled when the storage media is full, or when the directory's file count exceeds 5000. When [Make directory] is set to [EXIST], a new directory is created each time the current directory's file count exceeds 5000, until the storage media fills up, causing auto-save to cancel.
47 ──────────────────────────────────────────────────── 3.8 Simultaneous Display of Recorder and Memory Waveforms A recorder waveform and memory waveform can be displayed simultaneously on the screen. This allows trigger activation using memory to analyze in detail an incident that occurs during recording. Top :Recorder waveform Bottom :Memory waveform Use with memory segmentation By using memory segmentation, you can divide an incident during recording on the recorder into a set number of blocks.
48 ──────────────────────────────────────────────────── 3.9 Start and Stop Operation (REC&MEM) Setting the 8855 STATUS Settings Channel Settings Trigger Settings Measurement start Recorder Memory waveform waveform Trigger condition are met See Section 3.3, "STATUS Settings", Chapter 5, "Input Channel Settings", Quick Start Chapter 7, "Trigger Functions." Press the START key and LED light. Setting the trigger to Timer causes a delay until the set time.
49 ──────────────────────────────────────────────────── 1 Chapter 4 2 FFT Function 3 4 4.1 Overview of the FFT Function The FFT function has the following features. (1) FFT (Fast Fourier Transform) processing can be performed on input signal data for frequency analysis.
50 ──────────────────────────────────────────────────── 4.2 Operation Sequence (FFT) Preparation See Chapter 2 Installation of the Instrument Turn on the power Connect the inputs Basic Settings Settings on the STATUS screen See Section 4.3 Press the STATUS key to display the STATUS screen. Function Select the FFT function. FFT mode Select the using channels (1 channel or 2 channels) Frequency range Set the maximum value of frequency range.
51 ──────────────────────────────────────────────────── Setting the input channel Settings on the channel screen Settings the advanced function Setting the trigger function See Quick Start Chapter 7 See Quick Start Chapter 6 Waveform display color Voltage axis range Input coupling Magnification/compression along voltage Anti-aliasing filter Zero position Zero adjustment Low-pass filter Comment function See Section 5.
52 ──────────────────────────────────────────────────── 4.3 STATUS Settings (FFT) Press the STATUS key to access the STATUS screen. This section explains how to set the STATUS screen of the FFT function. See the corresponding sections for items that can be set in the Waveform display or CHANNEL screens. Waveform display screen: See Section 4.6 CHANNEL screen: See Quick Start Section 6.3 See Sections 4.3.8 4.3.9 4.3.10 4.3.11 4.3.1 4.3.2 4.3.3 4.3.4 4.3.5 4.3.6 4.3.7 4.3.17 4.3.12 4.3.13 4.3.14 4.3.
53 ──────────────────────────────────────────────────── 4.3.1 Setting the Function Mode The 8855 has four function modes. Select the FFT function. Procedure Screen: STATUS, CHANNEL, Waveform display, TRIGGER 1. Use the Menu keys to display the desired screen. 2. Move the flashing cursor to the top position. 3. Select the FFT function key display. Function display Meaning : Memory recorder function : Recorder function : Recorder & Memory recorder function : FFT function 4.3.
54 ──────────────────────────────────────────────────── 4.3.3 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. Screen: STATUS, Waveform display Procedure 1. Use the Menu keys to display the desired screen. 2. Move the flashing cursor to the Frequency Range item. 3. Use the function key to make the selection.
55 ──────────────────────────────────────────────────── The cutoff frequency of the anti-aliasing filter is the same as the selected frequency range, except for the cases listed below. *1: Anti-aliasing filter is OFF. *2: Cutoff frequency is 20 Hz. *3: FFT Number of Points values of 2000, 5000 and 10,000 correspond to multiples of 1/2, 1/5 and 1/10, respectively. *4: FFT Number of Points values of 2000, 5000 and 10,000 correspond to multiples of 2, 5 and 10, respectively. 4.3.
56 ──────────────────────────────────────────────────── 4.3.5 Setting the Window Function The window function defines the segment of the input signal that will be processed. Window processing can be used to minimize leakage error. Screen: STATUS, Waveform display Procedure 1. Use the Menu keys to display the desired screen. 2. Move the flashing cursor to the Window item. 3. Use the function key to make the selection.
57 ──────────────────────────────────────────────────── 4.3.6 Setting the Peak Function Display the peak or maximum value of the input signal and analyzed results. This is available only when the Format is set to Single or Dual display. Screen: STATUS Procedure 1. Press the STATUS key to display the screen to be displayed. 2. Move the flashing cursor to the Peak item. 3. Use the function key to make the selection.
58 ──────────────────────────────────────────────────── 4.3.7 Selecting Reference Data Select data to be used for FFT processing. Screen: STATUS Procedure 1. Press the STATUS key to display the STATUS screen. 2. Move the flashing cursor to the Reference item. 3. Use the function keys to make a setting.
59 ──────────────────────────────────────────────────── 4.3.8 Setting the Display 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. Screen: STATUS Procedure 1. Press the STATUS key to display the screen to be displayed. 2. Move the flashing cursor to the Format item. 3. Use the function key to make the selection.
60 ──────────────────────────────────────────────────── 4.3.9 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. Averaging for the time axis waveform and frequency axis waveform can be selected. Procedure Screen: STATUS, Waveform display 1. Use the Menu keys to display the desired screen. 2. Move the flashing cursor to the Averaging item. 3.
61 ──────────────────────────────────────────────────── Frequency axis peak hold The specified number of samples are captured, and the peak value is held (stored) for each frequency. NOTE For details on summing averaging and exponential averaging, refer to Appendix 3.5. When averaging is used together with the waveform evaluation function, waveform evaluation is carried out after the specified averaging count is completed.
62 ──────────────────────────────────────────────────── Averaging and trigger mode (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.
63 ──────────────────────────────────────────────────── (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.
64 ──────────────────────────────────────────────────── 4.3.11 Setting the Waveform Evaluation Display format can be set on single screen or 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. All the channels being displayed are evaluated. Procedure Screen: STATUS 1.
65 ──────────────────────────────────────────────────── 4.3.12 Setting the FFT Analysis Mode Used to select the FFT calculation method. Procedure Screen: STATUS, Waveform display 1. Use the Menu keys to display the desired screen. 2. Move the flashing cursor to the FFT Mode item. 3. Use the function keys to make a setting. For details on analysis, please refer to 4.8 FFT Analysis Function.
66 ──────────────────────────────────────────────────── 4.3.13 Setting the Analysis Channel Select the channel for FFT analysis. Procedure Screen: STATUS, Waveform display 1. Use the Menu keys to display the desired screen. 2. Move the flashing cursor to the w1 or w2 item. 3. Use the function keys or Jog/shuttle control, select the channel. Function display Meaning : Move the cursor up in the selection window. : Move the cursor down in the selection window.
67 ──────────────────────────────────────────────────── 4.3.14 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. When external sampling is used, the X-axis (horizontal axis) expresses the data count. Procedure Screen: STATUS, Waveform display 1. Use the Menu keys to display the desired screen. 2. Move the flashing cursor to the Y Axis item.
68 ──────────────────────────────────────────────────── X and Y Axis Settings Available with each FFT Analysis Mode FFT analysis mode STR LIN X Axis Y Axis (horizontal axis) (vertical axis) Storage Waveform (Time) (Linear) Linear Spectrum 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
69 ──────────────────────────────────────────────────── 4.3.15 Setting the Wave Colors Set the waveform display ON/OFF and the waveform color. Procedure Screen: STATUS, Waveform display 1. Use the Menu keys to display the desired screen. 2. Move the flashing cursor to the Wave item. 3. Use the function keys or Jog control, select the channel. Set the x-axis in the same way. Function display Meaning : Move the cursor up in the selection window. : Move the cursor down in the selection window.
70 ──────────────────────────────────────────────────── 4.3.16 Setting the Display Scale The display scale for showing the FFT processing result can either be set manually or automatically. Procedure Screen: STATUS 1. Press the STATUS key to display the STATUS screen. 2. Move the flashing cursor to the Scale item. 3. Use the function keys to make a setting. Function display Meaning : The vertical axis (Y-axis) scale is set automatically, depending on the processing result.
71 ──────────────────────────────────────────────────── 4.3.17 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). Procedure Screen: STATUS 1. Select "OCTAVE ANALYSIS" in FFT analysis mode, and the Octave Filter item is shown. 2. Move the flashing cursor to the Octave Filter item. 3. Use the function keys to make a selection.
72 ──────────────────────────────────────────────────── 4.4 Printout of FFT Processing Results (When 8994 PRINTER UNIT is installed.) 4.4.1 Setting the Print Mode Select the format, waveform, or numerical value should be used to output FFT processing results. Procedure Screen: PRINTER (1) Setting the printer format 1. Press the SYSTEM key to display the PRINTER screen. 2. Move the flashing cursor to the Print Mode item. 3. Use the function keys to make a setting.
73 ──────────────────────────────────────────────────── 4.5 Setting the Auto Save Function The FFT analysis is carried out and measurement data are automatically stored on a floppy disk, PC card, MO connected SCSI, or built-in MO/HD device after they are captured. The Auto Save function stores a file in the directory currently selected on the file screen. See Quick Start Section 10.13.2. Procedure Screen: STATUS 1. Press the STATUS key to display the STATUS screen. 2.
74 ──────────────────────────────────────────────────── NOTE File names consist of 8 characters. With auto-save, since numbers are attached to the end of file names, long file names are truncated when this number is appended to the end of the file name. 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 Quick Start Section 10.7.
75 ──────────────────────────────────────────────────── 4.6 Settings on the Waveform Display Screen (FFT) Explains the setting items on the Waveform display screen. For details, refer to Sections 4.3. When want to use the Jog/Shuttle control, press the VALUE select key. (The selection window is not displayed.) 1 3 2 5 4 6 7 8 9 Setting items Selection Explanation 1. Function MEM, REC, FFT, REC&MEM Select function. 2.
76 ──────────────────────────────────────────────────── 4.7 Start and Stop Operation (FFT) Setting the 8855 STATUS Settings Channel Settings Trigger Settings See Section 4.3, "STATUS Settings (FFT)", Quick Start Chapter 6, "Input Channel Settings", Quick Start Chapter 7, "Trigger Functions". 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.
77 ──────────────────────────────────────────────────── 4.8 FFT Analysis Function 4.8.1 Storage Waveform [STR] Displays the time domain waveform of the input signal. Function Horizontal cursor Vertical cursor Example fa Time Time axis display Indicates the value of the specified TIME/DIV frequency range. (Refer to the table "Frequency Range, Frequency Resolution, Window Width, Corresponding Time Axis Range" in Section 4.3.3.
78 ──────────────────────────────────────────────────── 4.8.2 Linear Spectrum [LIN] Displays the frequency domain waveform of the input signal, including magnitude and phase information.
79 ──────────────────────────────────────────────────── 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 ──────────────────────────────────────────────────── 4.
80 ──────────────────────────────────────────────────── 4.8.3 RMS Spectrum [RMS] Displays the frequency domain waveform of the input signal, including magnitude (effective value) and phase information. The LOG-MAG displays of RMS spectrum and Power spectrum express the same processing result. Major applications include: Determining the peaks of waveform frequency components. Determining the effective values of frequency components.
81 ──────────────────────────────────────────────────── 4.8.4 Power Spectrum [PSP] Displays the energy spectrum of the input signal, consisting of only magnitude information.
82 ──────────────────────────────────────────────────── Overall value The overall value is the total effective value obtained from the frequency spectrum contained in the input signal. It is obtained by taking the square root of the total of power spectra for all frequencies.
83 ──────────────────────────────────────────────────── 4.8.5 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.
84 ──────────────────────────────────────────────────── 4.8.6 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 Example Stored waveform Pa Volt Linear display of the measurement range of the input module.
85 ──────────────────────────────────────────────────── 4.8.7 Transfer Function [TRF] Function 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.
86 ──────────────────────────────────────────────────── Example Transfer function spectra waveform 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 ──────────────────────────────────────────────────── 4.
87 ──────────────────────────────────────────────────── 4.8.8 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.
88 ──────────────────────────────────────────────────── 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 ──────────────────────────────────────────────────── 4.
89 ──────────────────────────────────────────────────── 4.8.9 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.
90 ──────────────────────────────────────────────────── 4.8.10 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. -1 Function IMP = Horizontal cursor Time Time display.
91 ──────────────────────────────────────────────────── 4.8.11 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 multi-input systems.
92 ──────────────────────────────────────────────────── 4.8.12 Octave Analysis [OCT] This function displays the spectrum of a noise signal or other signal, using 1/1-octave or 1/3-octave band filters with fixed ratio.
93 ──────────────────────────────────────────────────── Example Octave analysis waveforms Stored waveform 1/1 octave analysis 1/3 octave analysis ──────────────────────────────────────────────────── 4.
94 ──────────────────────────────────────────────────── Frequency ranges and measurable range widths (0: 1/1 OCT, 1: 1/3 OCT) 0: 1/1 OCT, 1: 1/3 OCT Band No. Center 133 333 667 frequency m m m 1/1 1/3 (Hz) 4m 0 -8 -24 -23 5 m 1 -22 6.3 m 1 -7 -21 8 m 0 10 -20 10 m 1 1 1 1 -19 12.5 m 0 10 10 -6 -18 16 m -17 20 m 1 1 1 1 1 1 -16 25 m -5 -15 31.
95 ──────────────────────────────────────────────────── Band No. Center 133 333 667 1.3 frequency 4 m m m 3 1/1 1/3 (Hz) 38 6.3 k 13 39 8 k 40 10 k 14 41 12.5 k 42 16 k 43 20 k 15 44 25 k 45 31.5 k 46 40 k 16 47 50 k 48 63 k 49 80 k 17 50 100 k 51 125 k 52 160 k 18 53 200 k 54 250 k 55 315 k 19 56 400 k 57 500 k 58 630 k 20 59 800 k 60 1 M 61 1.25 M 21 62 1.6 M 63 2 M 64 2.5 M 22 65 3.15 M 66 4 M 67 5 M 23 68 6.
96 ──────────────────────────────────────────────────── ──────────────────────────────────────────────────── 4.
97 ──────────────────────────────────────────────────── 1 Chapter 5 2 Input Channel Settings 3 4 5 6 7 8 9 10 11 12 13 14 A ────────────────────────────────────────────────────
98 ──────────────────────────────────────────────────── 5.1 Overview This section describes the various input channel settings. This manual describes the advanced functions of the 8855. For information on commonly used functions, refer to the Basics edition (Quick Start Manual) of this manual. Item Screen Channel Display Waveform Display Color z z See Section Quick Start 6.3.1 Print Density z z See Section Quick Start 6.3.2 Waveform display screen z - See Section Quick Start 6.3.
99 ──────────────────────────────────────────────────── 1 5.2 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 variable function can be set to ON or OFF for each channel individually. The function can also be combined with the scaling function.
100 ──────────────────────────────────────────────────── Procedure Flashing cursor Screen: ONE CH, LIST (CHANNEL) 1. Press the CHAN key to display the Channel (ONE CH, LIST) screen. 2. Using the cursor key, move the flashing cursor to the variable position of the channel to be set. 3. Use the function keys to make a setting. Function display Flashing cursor Meaning : Variable function is disabled. : Variable function is enabled. ──────────────────────────────────────────────────── 5.
101 ──────────────────────────────────────────────────── Setting the value Screen: CHANNEL (ONE CH, LIST) 1. Using the cursor key, move the flashing cursor to /DIV or Disp Limits. 2. Select the F4 (numerical value input) key to display the numerical value input screen. 3. Use the cursor keys and function keys to input numerical values. The instrument settings are reflected in the scale settings. To exit from the numerical value input screen, press the ESC key.
102 ──────────────────────────────────────────────────── 5.3 Scaling Function (SYSTEM) 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 vertical 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.
103 ──────────────────────────────────────────────────── 5.3.1 Setting the Scaling Function (1) Setting the scaling function Method 1 Screen: CHANNEL (SCALING) 1. Press the CHAN key and move to the SCALING items of the menu screen to display the scaling settings screen. 2. Using the cursor key, move the flashing cursor to the channel to be set. 3. Use the function keys to make the selection.
104 ──────────────────────────────────────────────────── (2) Entering the numerical value 1. Move the flashing cursor to the item to be set. 2. Use the function keys to make the selection. Function display Meaning : Displays the numerical value input screen. Flashing cursor : Initializes the system. : Returns to the numerical values set one step before. 3. Use the function key to enter the numerical value. Function display Meaning : Sets the selected numerical values.
105 ──────────────────────────────────────────────────── Combination of the scaling and variable functions It is possible to combine the scaling and variable functions. When using the scaling and variable functions together, it is necessary to set the upper and lower limits of the physical amounts after first conversion (after scaling). Perform this setting first for variables, then for scaling. Setting the scaling function 1. 2.
106 ──────────────────────────────────────────────────── 5.3.2 Scaling Setting Example The example below shows the type of scaling when the measurement range is set to 10 A using the 9018 CLAMP ON PROBE. Scaling method: 2-point method Setting: SCI or ENG Converting value: 0.2 (V) 10 (scale), 0 (V) unit (eu): A 0.2 10 0.1 5.0 ［V］ 0 -0.1 -0.2 ［A］ 0 10 (scale) Through the use of the scaling function, the signal from the sensor can be obtained in the form of a current value.
107 ──────────────────────────────────────────────────── 5.4 Comment Function (CHANNEL) 5.4.1 Title Comment Entry Title comments of up to 40 characters can be included on the recording paper. Enabling title comment input prints the title on recording paper for all functions. "SET & COM" prints setup conditions (function, time axis range, magnification of time axis, and trigger time) along with the title. Flashing cursor Procedure Screen: COMMENT (CHANNEL) 1.
108 ──────────────────────────────────────────────────── 5.4.2 Analog/Logic Channel Comment Entry Comments of up to 40 characters can be printed or displayed with waveforms for each channel. If "COMMENT" or "SET & COM" is selected, this comment will be included on the recording paper in all functions. "SET & COM" prints the settings for each channel (voltage axis range, magnification of voltage axis, zero position, low-pass filter, and full span voltage range), along with comments.
109 ──────────────────────────────────────────────────── 5.4.3 Character Entry Procedure The procedure for entering the characters for the comments, units, etc. is described. Procedure Screen: COMMENT (CHANNEL), SCALING (UNIT), FILE (SAVE NAME) 1. Use the cursor key to move the flashing cursor to the position where you want to input the comment (characters). 2. Use the function keys to make the selection. Function display Meaning : The character input screen appears.
110 ──────────────────────────────────────────────────── 5.5 Copying Channel Settings Copies any of input channel settings (voltage axis range, input coupling, low-pass filter, and variable function), scaling function settings, or comment function settings to another channel. Copying channel settings cannot be carried out between different modules. Flashing cursor Procedure Screen: LIST, SCALING, COMMENT (CHANNEL) 1.
111 ──────────────────────────────────────────────────── 5.6 Setting the Waveform Display Screen 5.6.1 Entering by F9 (CH.SET) Key Pressing the F9 (CH.SET) key, enables the measurement conditions for each channel on the Waveform display screen to be set or changed. It is possible to make the settings, while monitoring the waveforms in real time on the Waveform display screen. For details on settings, refer to Section Quick Start 6.3. Waveform display screen Press the F9 key, toggle the input screen.
112 ──────────────────────────────────────────────────── Setting the power monitor (when the 9549 FUNCTION UP DISK is installed) Waveform display color Waveform display graph Zero position Magnification/compression ratio of voltage axis. 5.6.2 Entering by CH.SET Key Procedure 1. Press the DISP key to display the Waveform display screen. 2. Use the channel keys (CH1 to CH8) to select channels. You can only select the input modules that are installed. 3.
113 ──────────────────────────────────────────────────── 5.6.3 Setting the Vernier Function With the vernier function, input voltage can be minutely adjusted to the desired value. When recording various physical quantities using noise, temperature, and acceleration sensors, this vernier function allows you to adjust amplitudes to assist with calibration. For example, use the vernier function when you want to convert an input voltage of 1.2 V to 1.0 V and display the converted value. Procedure 1.
114 ──────────────────────────────────────────────────── 5.7 Setting the Probe Voltage Division Ratio DANGER NOTE 10:1 and 100:1 probe connections The maximum rated to-voltage does not change when using a 9665 10:1PROBE or a 9666 100:1PROBE. To avoid electrical shock or damaging the 8855 instrument, make probe connections in such a manner that the method for the probe, and make sure the to-ground voltage does not exceed the rated maximum.
115 ──────────────────────────────────────────────────── Procedure Screen: LIST (CHANNEL) 1. Press the CHAN key to display the List (Channel) screen. 2. To display the optional settings screen, use the F3 (PAGE) key. 3. Move the flashing cursor to the Probe item to be set. 4. Use the function keys to make the selection. Function display Meaning 1:1 setting. Select this when using the : 9197 or 9198 CONNECTION CORD on the modules input terminal. 10:1 setting.
116 ──────────────────────────────────────────────────── 5.8 Setting the 8951 VOLTAGE/CURRENT UNIT 5.8.1 Setting Voltage Measurement Flashing cursor Procedure Screen: LIST, ONE CH (CHANNEL) 1. Use the Menu keys to display the desired screen. 2. Move the flashing cursor to the Mode item to be set. 3. Use the function keys to select VOLTAGE. Function display Meaning : Move the cursor up in the selection window. : Move the cursor down in the selection window.
117 ──────────────────────────────────────────────────── Procedure Screen: LIST, ONE CH (CHANNEL) 1. Use the Menu keys to display the desired screen. Flashing cursor 2. Move the flashing cursor to the Mode item to be set. 3. Select the model name of the clamp-on sensor or clamp-on probe to be used with the function keys. Scaling is performed automatically. For details on other common settings, see Quick Start Section 6.3.
118 ──────────────────────────────────────────────────── 5.9 Setting the 8952 DC/RMS UNIT 5.9.1 Setting Voltage Measurement Procedure Screen: LIST, ONE CH (CHANNEL) 1. Use the Menu keys to display the desired screen. 2. Move the flashing cursor to the Mode item to be set. 3. Use the function keys to select DC. Function display Meaning : Move the cursor up in the selection window. : Move the cursor down in the selection window. For details on other common settings, see Quick Start Section 6.3. 5.9.
119 ──────────────────────────────────────────────────── (2) Setting the response The response time can be selected from three levels, High Speed, Standard, or Low Speed. Normally, this selection is set to High Speed, but if the frequency is low or fluctuations are frequent, more stable display can be obtained by setting the response time to Standard or Low Speed. 1. Use the Menu keys to display the desired screen. 2. Move the flashing cursor to the Response item to be set. 3.
120 ──────────────────────────────────────────────────── 5.10 8953-10 HIGH RESOLUTION UNIT The 8953-10 HIGH RESOLUTION UNIT contains an internal anti-aliasing filter required for FFT analysis. Enable the anti-aliasing filter when doing FFT analysis. For details on other common settings, see Quick Start Section 6.3. Procedure Screen: LIST, ONE CH (CHANNEL) 1. Use the Menu keys to display the desired screen. If the List screen is displayed, press the F3 ( PAGE) key to display the OPTION screen. 2.
121 ──────────────────────────────────────────────────── 5.11 Setting the 8954 VOLTAGE/TEMP UNIT WARNING A common GND is used for voltage and temperature input on each channel. When using the voltage and temperature inputs simultaneously, do not connect them both at the same time, as this may damage the object you are measuring. (You cannot measure the voltage and temperature simultaneously on the same channel.) 5.11.
122 ──────────────────────────────────────────────────── (2) Setting reference junction compensation 1. Use the Menu keys to display the desired screen. Flashing cursor 2. Move the flashing cursor to the RJC item to be set. 3. Use the function keys to make the selection. Function display Meaning : The 8954 performs reference junction compensation internally. (Measurement accuracy is calculated from temperature measurement accuracy and reference junction compensation accuracy.
123 ──────────────────────────────────────────────────── Measurement range and measurement input upper and lower limits Note that the measurement input upper and lower limits change according to the measurement range. When the following upper and lower temperature limits are exceeded, the waveform is saturated.
124 ──────────────────────────────────────────────────── 5.12 Setting the 8955 F/V UNIT The 8955 F/V UNIT can measure the frequency, rotation speed, commercial power frequency, integral value, pulse duty ratio, and pulse width for each channel. (Only one setting type can be measured for each channel.) For details on common settings, see Quick Start section 6.3. FREQ Frequency is calculated using the input pulse that corresponds to the measurement waveform.
125 ──────────────────────────────────────────────────── (2) Setting the measurement range Set the value per division. 1. Use the Menu keys to display the desired screen. 2. Move the flashing cursor to the Range item to be set. 3. Use the JOG control, the function keys or the RANGE knob to make the selection. (3) Setting the threshold value The waveform is measured for the interval that it crosses the threshold value. 1. Use the Menu keys to display the desired screen. 2.
126 ──────────────────────────────────────────────────── Hold ON/OFF Setting during measurement of stop action Hold ON/OFF setting when measurement is stopped Frequency and rotation speed measurement results are displayed after a single cycle is verified. When measuring the phenomena called rotation stoppage with hold set to ON, the 8855 waits endlessly for measurement period verification, so the stoppage cannot be detected.
127 ──────────────────────────────────────────────────── 5.12.2 Integration Measurement Settings With integration, the number of input pulses is counted. Input pulses are displayed as "c" counts. Object to be measured Integration Measurement range 2 kc to 1 Mc Procedure Screen: LIST, ONE CH (CHANNEL) (1) Setting the measurement mode 1. Use the Menu keys to display the desired screen. 2. Move the flashing cursor to the Mode item to be set. 3. Use the function keys to select COUNT.
128 ──────────────────────────────────────────────────── (5) Setting the slope Set the slope to use as a reference for measurement. Measurement is made based on the point where the rising or falling slope of the input signal crosses the threshold. 1. Use the Menu keys to display the desired screen. 2. Move the flashing cursor to the Slope item to be set. 3. Use the function keys to make the selection. 5.12.
129 ──────────────────────────────────────────────────── be set. 3. Use the function keys to make the selection (4) Setting the level Select whether you want to measure duty ratio based on the HI level or the LO level. 1. Use the Menu keys to display the desired screen. 2. Move the flashing cursor to the Level item to be set. 3. Use the function keys to make the selection.
130 ──────────────────────────────────────────────────── (2) Setting the measurement range Set the value per division. 1. Use the Menu keys to display the desired screen. 2. Move the flashing cursor to the Range item to be set. 3. Use the JOG control, the function keys or the RANGE knob to make the selection. (3) Setting the threshold value The waveform is measured for the interval that it crosses the pulse duty ratio. 1. Use the Menu keys to display the desired screen. 2.
131 ──────────────────────────────────────────────────── 1 Chapter 6 2 Memory Segmentation Function 3 4 This function divides the memory into separate blocks, each of which can be used for waveform recording. 5 The recording length (DIV) has priority over the number of memory blocks. (A maximum of 1024 segments, or a maximum of 512 segments when using the recorder & memory function.) Input signal capture is carried out continuously using the trigger, storing waveform data successively in each block.
132 ──────────────────────────────────────────────────── 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. During measurement, displaying, printing, and saving cannot be carried out until the recording data in all block is completed.
133 ──────────────────────────────────────────────────── Procedure 1 Screen: MEMORY DIV (STATUS) (1) Select the Memory Segmentation 1. Press the STATUS key to display the Memory segmentation (MEMORY DIV) screen. 2. Move the flashing cursor to the position shown in the figure. 3. Use the function keys, and select ON. Function display 2 3 Meaning 4 : Disable memory segmentation : Enable memory segmentation 5 (2) Set the Recording Length. 1. Move the flashing cursor to the Shot item. 2.
134 ──────────────────────────────────────────────────── (3) Set the number of segmentation. 1. Move the flashing cursor to the Division item. 2. Use the function keys or JOG to set the number of splits. See item (2) of this section for details about the number of splits that can be set. Function display Meaning : Increases the number splits : Decreases the number splits (4) Start/end block setting Set the beginning and end blocks when you use blocks from a memory that is split sequentially.
135 ──────────────────────────────────────────────────── 1 (6) Setting ref blocks Waveform data recorded in multiple blocks can be displayed in a composite display. 1. Move the flashing cursor to the Ref Block item. 2. Use the function keys to make the selection. Function display 2 Meaning 3 : Disable ref block : Enable ref block 4 : Turns off reference for all blocks. 5 : Turns on reference for all blocks. 3. Move the flashing cursor to the numerical value item (ref block).
136 ──────────────────────────────────────────────────── Relation between trigger mode and sequential save function Press the START key and LED light. Measurement start Data recording starts when trigger condition are met. Start block is stored by trigger setting. The following waveform display ON: waveform is displayed. The following waveform display OFF: waveform is not displayed. Start block End block is stored by trigger setting. The following waveform display ON: waveform is displayed.
137 ──────────────────────────────────────────────────── 1 Chapter 7 2 Calculation Function 3 4 5 7.1 Numerical Calculation (MEM) 6 This performs calculation only on those waveforms in the memory. Once it performs calculation, it displays numerical results. When using A-B cursor, it performs waveform calculation only for the data between the cursors. (When the calculation range is specified.
138 ──────────────────────────────────────────────────── Numerical calculation Operating Sequence Setting the waveform numerical calculation OFF Disable numerical calculation. ON Enable numerical calculation.
139 ──────────────────────────────────────────────────── 1 7.1.1 Making Settings for Numerical Calculation Numerical calculations results can be printed on the internal printer. Numerical calculations results can be saved in text format to the current directory selected in the File screen. For the file name to be saved, see Quick Start Section 10.7, "Saving the Data." Procedure 2 3 Screen: STATUS (1) Set the numerical calculation. 4 1.
140 ──────────────────────────────────────────────────── 4. Make a selection from the function key display. Function display Meaning : Does not save calculation results : Saves the calculation results on a floppy disk : Saves the calculation results on a PC card : Saves the calculation results on the built-in MO disk or hard disk : Saves the calculation results on a external MO disk connected through a SCSI : Saves the calculation results on a device connected through a LAN 5.
141 ──────────────────────────────────────────────────── 1 Numerical calculation operations Average value The average value in the waveform data RMS value The RMS value of the waveform data Peak The peak-to-peak value of the waveform data Maximum value The maximum value in the waveform data Time to maximum value The time from the trigger to the maximum value Minimum value The minimum value in the waveform data Time to minimum value The time from the trigger to the minimum value Period The c
142 ──────────────────────────────────────────────────── 7.1.2 Copying Calculations Settings Numerical calculation settings can be copied from one channel to another. Procedure Screen: MEASUREMENT (STATUS) 1. Press the STATUS key to display the numerical calculation screen. 2. Move the flashing cursor to the number of the calculation to be used as copy source. 3. Press the F4 (copy) key. The copy source and copy destination are displayed in the small window that appears. 4.
143 ──────────────────────────────────────────────────── 7.1.3 Making Settings for Numerical Evaluation Depending on the results of the numerical 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. 16. Procedure Screen: MEASUREMENT (STATUS) 1. Set each numerical calculation operation. Flashing cursor 2. Move the flashing cursor to COMP, and use the function key to select.
144 ──────────────────────────────────────────────────── Evaluation result Interpret the numerical calculation evaluation results by the color of the numerical values. NG numerical values are red. Also, if a beeping sound has been set, you hear the sound whenever a NG occurs. When a NG occurs, the numerical values of the channel that experience the error are displayed red on the screen. NG channels are represented by an "x" on the printout.
145 ──────────────────────────────────────────────────── 7.1.4 Executing Numerical Calculation Calculation is carried out in the order No.1 through No.16. Also for channels where no input module is installed, numerical calculation is carried out if data loaded from media are stored in the channel. The scaling setting has effect. (RMS value and area value are calculated after scaling.
146 ──────────────────────────────────────────────────── Calculation of data stored in memory Selecting the calculation Loading from the media Internal memory data Setting the calculation range Setting the numerical calculation Executing the numerical calculation Displaying calculation result Numerical evaluation Processing the calculation result Press the FILE key to display the File screen. Read the measurement data. See Quick Start Section 10.8.
147 ──────────────────────────────────────────────────── 7.2 Waveform Calculation (MEM) Waveform processing is possible only for the memory function. Processing result are displayed as a waveform. The maximum recording length allowing waveform processing calculation is 5000 divisions (20,000 divisions for 128 M words, 80,000 divisions for 512 M). Use the A/B cursors to specify the processing range for the waveform data within the maximum recording length .
148 ──────────────────────────────────────────────────── 7.2.1 Preparing for Waveform Processing Procedure Screen: WAVE CALC (STATUS) (1) Set the waveform calculation. 1. Press the STATUS key to display the waveform calculation screen. 2. Move the flashing cursor to Wave CALC. 3. Use the function keys to make the selection. Function display Meaning : Disable waveform processing. : Enable waveform processing. The various setting items are displayed.
149 ──────────────────────────────────────────────────── NOTE If the cursors are overlayed so that they form a single cursor, that point only is calculated. You cannot use horizontal line cursors to specify an area for calculation. If cursor A only is used, calculations are applied to the area from cursor A to the end of the measurement data. 7.2.2 Defining the Processing Equation Sixteen processing equations (Z1 - Z8) can be defined.
150 ──────────────────────────────────────────────────── Operators (For details, see Appendix.3.8.) ABS EXP LOG SQR MOV SLI DIF INT NOTE Absolute value Exponential Logarithm Square root Displacement average Parallel displacement on time axis 1st differential 1st integral DIF2 INT2 SIN COS TAN ASIN ACOS ATAN 2nd differential 2nd integral Sine Cosine Tangent Arc-sine Arc-cosine Arc-tangent For multiplication, always use the "*" sign.
151 ──────────────────────────────────────────────────── (3) Deleting an Equation 1. Move the flashing cursor to one of the Z1 - Z8 items. 2. Select YES. 3. Make the setting with the function keys. Function display Meaning : Clear equation : Do not clear equation 7.2.3 Copying an Equation An equation to which an equation number has been assigned (copy source) can be copied to another equation number (copy target). Procedure Screen: WAVE CALC (STATUS) 1.
152 ──────────────────────────────────────────────────── 7.2.4 Setting the Channel for Recording Processing Results The calculation result of equations Z1 - Z8 can be recorded and displayed in a specified channel. Processing results can be recorded also in channels where no input module is installed (but the range of the "number of channels in use" setting cannot be exceeded). Procedure Screen: WAVE CALC (STATUS) (1) Making the processing equation 1.
153 ──────────────────────────────────────────────────── 7.2.5 Setting the Display Scale Display scale can be set automatically or manually. The channel selected for recording is automatically set to variable display. (See Section 5.2) If MOV or SLI was used, the number of moved points must be specified. Procedure Screen: WAVE CALC (STATUS) (1) Setting the Display Scale 1. Press the STATUS key to display the waveform calculation screen. 2. Move the flashing cursor to Scale. 3.
154 ──────────────────────────────────────────────────── (1) Setting the number of moved point 1. Move the cursor to the position of the number of moved point setting (MOV or SLI). 2. Make the setting with the function keys or the JOG/SHUTTLE control. For MOV (moving average): 1 to 4000 For SLI (parallel displacement): -4000 to +4000 Function display Meaning : Increase value. : Decrease value. : End ──────────────────────────────────────────────────── 7.
155 ──────────────────────────────────────────────────── 7.2.6 Perform Waveform Processing Waveform processing while capturing the waveform Press the START key and LED light. Measurement start 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.
156 ──────────────────────────────────────────────────── Waveform processing of data in internal memory or media Select the calculating data Loading from media Internal memory data Setting the calculating range Press the FILE key to display the FILE screen. For details on LOAD, refer to Quick Start Section 10.8. Waveform calculation execute the stored measurement data. This setting calculates the measurement data between A and B cursors. When there is no A and B cursors, calculates all data.
157 ──────────────────────────────────────────────────── 1 Chapter 8 2 Search Function 3 4 5 6 7 8 9 10 11 12 13 14 15 ────────────────────────────────────────────────────
158 ──────────────────────────────────────────────────── 8.1 View Function (VIEW key) 8.1.1 Position Display Indicates the position of the currently displayed waveform within the entire recording length. The trigger time, trigger position and A/B cursor position are displayed when using the vertical or trace cursors.
159 ──────────────────────────────────────────────────── 1 8.1.2 Block Display When memory segmentation is being used, the memory block status is shown. Any block in which an input signal is recorded can be called up on the display. Procedure 2 Screen: Waveform display 3 1. Press the F7 (SEARCH) key on the Waveform display screen. 2. The position is displayed. 4 3. Using the function key to select Block Display. Function display Meaning 5 : Shifts the destination to the left.
160 ──────────────────────────────────────────────────── 8.2 Trigger Search Allows you to set the triggering conditions and find the location that matches those conditions in the captured waveforms. This is set in the trigger screen. See Quick Start Chapter 7 for details about trigger settings. Procedure Screen: Waveform display, TRIGGER 1. Sets triggering conditions. See Quick Start Chapter 7 for details about trigger settings. 2. In the function key display, press the F7 (SEARCH) key . 3.
161 ──────────────────────────────────────────────────── 1 5. You can specify the range of waveforms to search for. Move the flashing cursor on the position on the screen. Function display 2 Meaning : Specifies the current position 3 : Specifies the data start : Specifies the data end 4 : Specifies cursor A : Specifies cursor B 5 6. Use the function keys to specify the search range (start and end points). NOTE 6 To exit the trigger search screen, press the ESC key.
162 ──────────────────────────────────────────────────── 8.3 Peak Search Function Allows you to search for the captured waveform maximum and minimum values. Procedure Screen: Waveform display, TRIGGER 1. Press the F7 (SEARCH) key on the Waveform display screen. 2. Press the F8 (PEAK) key on the function key display.
163 ──────────────────────────────────────────────────── 8.4 Event Search This selection applies only to the Recorder mode or REC & MEM Function. An event mark is entered each time the START key is pressed during measurement in the Recording mode. (Event marks can also be entered using the external start terminal.) When the screen is set to REC&MEM, an event mark is automatically entered at the point where a MEM trigger has been activated.
164 ──────────────────────────────────────────────────── 8.5 Time Search This function searches acquired waveforms. You can search using the elapsed time since triggering or the date. Procedure Screen: Waveform display 1. Press the F7 (SEARCH) key on the Waveform display screen. 2. Press the F10 (EVENT) key on the function key display. Function display Meaning : Accesses the view screen : Searches waveforms by settings : Searches for peaks : Searches for event marks. : Executes a time search. 3.
165 ──────────────────────────────────────────────────── 8.6 Moving Cursors to the Search Points The A and B cursors can be moved to the search points. Procedure Screen: Waveform display 1. Display the A and B cursors other than horizontal cursors on the display screen. 2. Press the F7 (SEARCH) key on the function key display. 3. The data is searched (for triggers, peaks, time, and events). 4. Use the function key display to select Move Cursor. The cursor moves to the search point.
166 ──────────────────────────────────────────────────── ──────────────────────────────────────────────────── 8.
167 ──────────────────────────────────────────────────── 1 2 Chapter 9 Waveform Evaluation Function 3 4 5 9.1 Waveform GO/NG Evaluation (MEM, FFT Function, Power Monitor Function) 6 The waveform evaluation function can be used from the Memory function (single screen, X-Y single screen), FFT function, or the Power monitor function (when the 9549 FUNCTION UP DISK is installed). GO (pass) or NG (fail) evaluation of the input signal waveform can be performed using an evaluation area specified by the user.
168 ──────────────────────────────────────────────────── NOTE Trigger mode: SINGLE Measurement continues until stop mode conditions are fulfilled and then stops. Trigger mode REPEAT, AUTO Recording and waveform evaluation is carried out continuously. Press the STOP key to terminate the measurement. When "auto print" is set to ON, the waveform is printed out when operation stops. When "auto save" is set to ON, data are stored on media when operation stops.
169 ──────────────────────────────────────────────────── 1 Waveform evaluation mode and stop mode Waveform evaluation mode Stop mode 2 GO 3 Stop on GO result 4 NG OUT Stop on NG result 5 GO&NG 6 Return NG if any part of waveform leaves evaluation area Stop on GO or NG result 7 GO Stop on GO result 8 ALL-OUT Return NG if entire waveform leaves evaluation area 9 NG Stop on NG result GO&NG Stop on GO or NG result 10 11 12 13 14 15 ──────────────────────────────────────────────────── 9.
170 ──────────────────────────────────────────────────── 9.2 Setting the Waveform 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. (1) Loading the already created evaluation area Procedure Screen: FILE 1. Press the FILE key to call the File screen. 2. Select the media for loading. 3. Use the bar cursor to select the desired file. 4.
171 ──────────────────────────────────────────────────── 1 9.3 Setting the Waveform Evaluation Mode Procedure 2 Screen: STATUS 1. Move the flashing cursor to Comparison. 2. Make the setting with the function keys. Function display 3 Meaning : Disable waveform evaluation. 4 : Return NG if any part of the waveform leaves the evaluation area. 5 : Return NG if the entire waveform leaves the evaluation area. : Enable waveform evaluation. 6 : Activate editor for setting up evaluation area. 7 9.
172 ──────────────────────────────────────────────────── 9.5 Creating the Evaluation Area Procedure Screen: Waveform display 1. Move the flashing cursor to the Comparison item. Press the F8 (edit) key. 2. Use these commands to create the evaluation area. 3. When the area has been stored in memory, it can be used for waveform evaluation. 4. Select the F10 (end) function key to terminate the editor. 5. Serves to store the created area in memory. 6.
173 ──────────────────────────────────────────────────── line Serves to draw a straight or polygonal line. 1. Press this key. 2. Use the cursor keys to move the pencil mark to the start point of the line. Pressing speed up accelerates the movement of the mark. If the area is not completely enclosed, adjacent areas will also be filled in. 3. Press the F4 (SET) key. 4. Move the pencil mark. A line is drawn between the set point and the pencil mark. 5. Press the F4 (SET) key again.
174 ──────────────────────────────────────────────────── clear undo end Clears a specified rectangular area of the editor screen. 1. Press this key. 2. Use the cursor keys to move the pencil mark to the start corner of the area to be erased. Pressing speed up accelerates the movement of the mark. 3. Press the F4 (SET) key. 4. Move the pencil mark to the end corner of the area to be erased. 5. Press the F4 (SET) key again. The rectangular area is cleared. Press the F5 (CANCEL) key.
175 ──────────────────────────────────────────────────── 1 Chapter 10 2 Printout of Measurement Data 3 4 Printing is possible when the 8994 PRINTER UNIT is installed. 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.
176 ──────────────────────────────────────────────────── 10.1 Printout of Measurement Data Operating Procedure Settings on the STATUS screen Press the STATUS key to make the settings on the STATUS screen. Display format Settings on the CHANNEL screen Single Display and record as one graph. (8 analog + 16 logic signals max.) Dual Display and record as two graphs. (8 analog + 16 logic signals max.) Quad Display and record as four graphs. (8 analog + 8 logic signals max.
177 ──────────────────────────────────────────────────── Settings on the SYSTEM screen Print format Press the SYSTEM key to make the settings on the SYSTEM screen. See Quick Start Section 9.4. Waveform Setting the smooth print Smooth-print yields a smoothlooking waveform printout, but printing speed is reduced. Numerical value Setting the print interval When using numerical values, set the printing intervals.When the printing interval is longer than the recording length, it prints only the first point.
178 ──────────────────────────────────────────────────── 10.2 Setting the STATUS Screen (printout) 10.2.1 Setting the Display 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, oct, X-Y single, X-Y quad are available. Procedure Flashing cursor Screen: STATUS 1. Press the STATUS key to display the Status screen. 2. Move the flashing cursor to the Format item, as shown in the figure on the left. 3.
179 ──────────────────────────────────────────────────── 10.2.2 Setting the Waveform Display Graph Position Set which graph type to use when display format has been set to DUAL, QUAD or OCT screen display on the Status screen. Flashing cursor Procedure Screen: ONE CH, LIST (CHANNEL) 1. Press the CHAN key to display the Channel screen. 2. Move the flashing cursor to the position of the Graph to be set. 3. Use the function keys or JOG control to make the selection.
180 ──────────────────────────────────────────────────── 10.3 Setting the CHANNEL Screen (printout) 10.3.1 Setting the Print Density If the data is to be output on the internal printer, any of four print densities may be set for twelve waveform display colors. The set print density determines waveform density on printouts or hard copies. Procedure Flashing cursor Screen: ONE CH, LIST (CHANNEL) 1. Press the CHAN key to display the Various channels (ONE CH) or List screen. 2.
181 ──────────────────────────────────────────────────── 10.3.3 COMMENT Screen Three types of comment are available. If "COMMENT" or "SET & COM" is selected, this comment will be included on the recording paper in all functions. NOTE For details, see Section 5.4. ──────────────────────────────────────────────────── 10.
182 ──────────────────────────────────────────────────── 10.4 Setting the SYSTEM Screen (printout) The various printer settings can be made on the system's Printer screen. For details, see Quick Start section 9.4. ──────────────────────────────────────────────────── 10.
183 ──────────────────────────────────────────────────── 10.5 Example of Printer Output This section explains the printer type and how to read the printout (in the case of a SINGLE format waveform display screen). MEMORY 100 µs/DIV( 100 µs x 1) Trig:'01-03-28 12:00:00 500 µs 100 3. 90 [V] 1. [HIOKI 8855 COMMENT 1 ms 4. ] 1.5 ms 2. 80 70 60 50 40 30 20 10 0 3 5. -10 -20 -30 -40 10. -50 -60 -70 -80 CH3 -90 CH3 200 mV f.s. ( 10 mV x 1 ) 50% * OFF [CH3 COMMENT ] -100 6. 1.
184 ──────────────────────────────────────────────────── Advanced settings 4. HIOKI 8855 MEMORY HiCORDER 1. 2.5ms Upper 1: 2: 3. 7V 4V '01 - 3 - 28 - 0017 6. 2. ch1 COMMENT 5ms ch2 COMMENT ch1 COMMENT ch2 COMMENT 5. 1. Lower 1: 2: -7 V -4 V chA1 chA2 chA3 chA4 COMMENT COMMENT COMMENT COMMENT 1. 2. 3. 4. 5. 6.
185 ──────────────────────────────────────────────────── Printing the List (MEM) Example ──────────────────────────────────────────────────── 10.
186 ──────────────────────────────────────────────────── 10.6 Printing Procedure 10.6.1 Manual Print This mode serves to print waveform data from the internal memory. Memory function Measurement data from one measurement (entire recording length) are printed. Recorder function Measurement data stored in memory before the end of measurement are *1 printed (2000 divisions max.).
187 ──────────────────────────────────────────────────── 10.6.2 Auto Print Printout is carried out automatically after a waveform has been captured for the specified recording length. (MEM) Procedure Screen: PRINTER (SYSTEM) 1. Press the SYSTEM key to display the Printer screen. 2. Move the flashing cursor to the Auto Print item. 3. Use the function keys to make a setting. .3. 4. Press the START key to start the measurement.
188 ──────────────────────────────────────────────────── 10.6.3 Real Time Print The input waveform and data are printed out continuously in real time. (in Recorder function) Procedure Screen: PRINTER (SYSTEM) 1. Press the STATUS key to display the Status screen. 2. Move the flashing cursor to the Realtime Print item. 3. Use the function keys, and select ON. 4. When measurement starts, waveform appears on screen and printout starts.
189 ──────────────────────────────────────────────────── 10.6.4 Partial Print This function prints the waveform between the A and B cursors (vertical or trace cursors). The function is available also when the A/B cursors are currently outside the range displayed on screen. Printing is possible also when the print format is currently set to "numeric". For details regarding the use of the A/B cursors, refer Quick Start to Section 8.2.
190 ──────────────────────────────────────────────────── 10.6.5 Screen Hard Copy The display contents of the all screens can be printed out as is. Procedure Screen: All 1. Display the desired screen. 2. 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. 10.6.
191 ──────────────────────────────────────────────────── 1 Chapter 11 2 Communication Settings 3 4 5 11.1 INTERFACE Screen (LAN Interface) The LAN capabilities of the instrument are supported through the Ethernet 10Base-T interface. You can connect to networks with an Ethernet 10BASET-compatible cable (maximum length 100 m). Connecting to a network enables you to communicate with the Hioki PC communication program, 9333 LAN COMMUNICATOR.
192 ──────────────────────────────────────────────────── DHCP : Yes/No Host Name and Address setting Host Name (Up to 12 characters) : ____________ IP Address : ___.___.___.___ Subnet Mask : ___.___.___.___ (When using DHCP, you do not need to enter the IP address or subnet mask.) DNS setting DNS : Yes/No IP Address(If Yes) : ___.___.___.___ (When settings can be acquired from DHCP, the DHCP setting takes priority.) Gateway setting Gateway : Yes/No IP Address (If Yes) : ___.___.___.
193 ──────────────────────────────────────────────────── 1 Settings 2 3 4 Make each setting prepared previously. After making each setting, move the cursor to Reset and press Execute on the GUI. DHCP DHCP is a method whereby devices automatically acquire and set their own IP address, etc. Enabling DHCP makes automatic acquisition and setting of an IP address and subnet mask possible when a DHCP server is operating on the same network as the device.
194 ──────────────────────────────────────────────────── DNS It is difficult to remember an IP address since it is simply a string of numbers. However, it is easier to remember if it can be specified as a name. When the network includes a server that can search for IP addresses from names on the network, you can specify devices by name instead of using the IP address. This service is provided by both DNS and WINS servers; however, the 8855 only supports DNS.
195 ──────────────────────────────────────────────────── Data Collection Server When communicating with this device, specify the IP address of the PC running the 9333 LAN COMMUNICATOR. This is necessary when collecting data using the 9333 LAN COMMUNICATOR. If necessary, set "LAN" as storage media in the Save screen and as the output destination for the PRINT key in the Printers screen. When DNS is effective and the set IP address is other than 0.0.0.0, the set IP address is used.
196 ──────────────────────────────────────────────────── Connection Connect only when you have completed making the settings. Connecting this device to an existing network. Connect this devices LAN connector and the hub with a straight 10BASE-T cable. Use a commonly sold straight 10BASE-T-compatible cable or a 9642 LAN CABLE, and connect it as illustrated below. A cross cable is necessary when connecting this device and the PC one-toone (peer-to-peer).
197 ──────────────────────────────────────────────────── 11.2 FTP Service This instrument provides FTP service by means of an FTP (File-TransferProtocol, RFC959 compatible) server. By using FTP client software from your PC, you can access the files stored on the media in this instrument. For information on how to use FTP on your PC, refer to the explanation provided with the FTP software. Settings The following three settings are available: User Name, Password, and Access Control.
198 ──────────────────────────────────────────────────── Restrictions The following restrictions apply when using the FTP service. Files cannot be accessed during measurement. The service must be partially terminated to access files during measurement. If necessary, perform one of the following: Wait until measurement is finished. Stop measurement using the 9333 remote control. Use the pre-software for starting and stopping measurement on this instrument planned to be provided on the HIOKI Web site.
199 ──────────────────────────────────────────────────── 11.3 PPP connection The instrument can be connected to a telephone circuit via a LAN connection that runs through a PC by using a modem card and PPP (Pointto-Point Protocol). If a modem card is inserted into the instrument, PPP takes priority, and the instrument's internal LAN stops. Since a LAN connection is made, the 9333 and FTP can be used via the telephone circuit.
200 ──────────────────────────────────────────────────── Outbound settings If LAN is set as the save location for the Auto Save and Save buttons, when files are saved, the PC is dialed from the recorder and the data saved in the specified location. Two locations (A and B) can be registered as the dial destination, and dialing is performed according to the settings made in Pattern on the PPP settings screen.
201 ──────────────────────────────────────────────────── Inbound settings Set when the recorder is dialed from the PC. "Inbound" receipt permission Sets whether the recorder is able to receive data from an external source. "Inbound" user name and password Sets a user name and password used for authentication when receiving data. Passwords are displayed as "********". "Inbound "DNS specification and IP addresses When using the DNS connection point, select this setting and set the IP address for DNS.
202 ──────────────────────────────────────────────────── 11.4 PC Card Interface Make settings for the RS-232C interface and GP-IB interface. Press the Next (F3) key on the Communications screen to display the screen for making PC card interface settings. When the PC card is inserted, it is automatically recognized, and you can make the necessary settings.
APPENDIX 1 ──────────────────────────────────────────────────── 1 Appendix 2 3 4 Appendix 1 Error Messages The instrument produces two levels of message to indicate problems. These are distinguished as follows. 5 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.
APPENDIX 2 ──────────────────────────────────────────────────── WARNING 013: Disk full. The media is running low on storage space. Cannot save. Delete files or use a new media. WARNING 014: File is read only. This is a read-only file. Save or delete is not possible. WARNING 015: General failure. File cannot be accessed because of unsuccessful formatting or save. WARNING 016: File already exists. Change the file name. WARNING 017: Directory already exists. Change the directory name.
APPENDIX 3 ──────────────────────────────────────────────────── WARNING 064: The number of clamps Check the number of clamps that can be used, and make sure you do not use more than this number. that can be used is limited. 1 WARNING 065: The overlay and waveform evaluation functions cannot be used. Turn off the Roll mode. WARNING 066: Failed to detect the zero cross. Set the zero cross filter so that the zero cross can be detected. 2 WARNING 080: In key lock. Keylock is engaged.
APPENDIX 4 ──────────────────────────────────────────────────── Appendix 2 Glossary A/D Conversion of an analog quantity into a digital quantity Aliasing Phantom signal components; a phenomenon that occurs if sampling frequency is low in relation to the frequency of the sampled signal (see Appendix 3.2). Analog Continuous physical quantity such as voltage or current Attenuator Device for reducing the level of a signal Bit Smallest unit of binary information Byte Unit of information.
APPENDIX 5 ──────────────────────────────────────────────────── Ripple component AC component of noise Sampling Measuring an analog waveform at regular intervals Sampling rate Rate at which sampling carried out; sampling frequency Scaling Conversion of voltage value into a specified unit Storage Storing measurement data in the internal memory Thermal head Print head of thermal printer Threshold value When turning an analog signal into a logic signal, the level at which the measured value is di
APPENDIX 6 ──────────────────────────────────────────────────── Appendix 3 Reference Appendix 3.1 Sampling The 8855 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). Measurement point Time Sampling period The rate of taking these measurements is termed the sampling rate.
APPENDIX 7 ──────────────────────────────────────────────────── Appendix 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.
APPENDIX 8 ──────────────────────────────────────────────────── Appendix 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. 1 2 3 4....... .......
APPENDIX 9 ──────────────────────────────────────────────────── Appendix 3.5 Averaging Equations For time axis averaging in memory functions, summing averaging is synchronized by the trigger. If trigger synchronization is not performed, the results will be meaningless. Summing averaging Captured data are added sequentially and the sum is divided by the number of samples.
APPENDIX 10 ──────────────────────────────────────────────────── Appendix 3.7 Waveform Parameter Calculation Details (1) Average value Calculates the average value (V) of the waveform data. n AVE = 1 n Σ di i=1 AVE n di average value number of data samples 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.
APPENDIX 11 ──────────────────────────────────────────────────── (10) Rise time (11) Fall time From the captured waveform data, the 0% and 100% level is determined, and the rise time (s) is taken as the time required to go from 10% to 90% (fall time: from 90% to 10%). In the captured waveform data, the first rising slope (or falling slope) is used to make the calculation.
APPENDIX 12 ──────────────────────────────────────────────────── (14) X-Y area value 2 Calculates the area (V ) after X-Y plotting. The waveform is plotted on the X-Y screen, and the area enclosed by the plot lines is calculated. In single, dual, or quad screen, the A/B cursors (vertical, trace) can be used to specify the range (see Quick Start Section 8.2.) for X-Y plotting and area calculation. On the X-Y screen of the memory function, it is not possible to specify the range with the A/B cursors.
APPENDIX 13 ──────────────────────────────────────────────────── (17) Duty Ratio The ratio is calculated according to the time difference between the point where the rising waveform intersects the set level and the intersection of the next opposite slope. It can also be calculated according to the time difference between the point where the falling waveform intersects the set level and the intersection of the next opposite slope.
APPENDIX 14 ──────────────────────────────────────────────────── Appendix 3.8 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 (+, -, *, /) According to the operators set, the four arithmetical operations are performed. (2) Absolute value (ABS) bi = |di| (i = 1, 2, ....
APPENDIX 15 ──────────────────────────────────────────────────── (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 t 1 - t n are taken as d1 - d n and used for calculating the differential.
APPENDIX 16 ──────────────────────────────────────────────────── 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) bi = sin(di) (i = 1, 2, .... n) (13) Cosine (COS) bi = cos(di) (i = 1, 2, .... n) (14) Tangent (TAN) bi = tan(di) (i = 1, 2, ....
APPENDIX 17 ──────────────────────────────────────────────────── Appendix 3.9 FFT Function 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.
APPENDIX 18 ──────────────────────────────────────────────────── 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.
APPENDIX 19 ──────────────────────────────────────────────────── Time domain Frequency domain F(ω) f(t) Section observed on screen t Input signal 0 Fmax Fs/2 ω Sampling function t Fs > 2 Fmax Fs > 2 Fmax t Fs > 2 Fmax Sampling function t Fs < 2 Fmax Fs < 2 Fmax Fs < 2 Fmax t Overlapped parts seem folded back 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 alias
APPENDIX 20 ──────────────────────────────────────────────────── When an anti-aliasing filter is not used. This is a spectral artifact that occurs as a result of aliasing of the high frequency component of a signal with the A/D converter sampling rate. Although visible during measurement, it does not exist in reality. Because no anti-aliasing filter is present, fine square waves are monitored through the high-frequency amplifier, so the corners of square waves include high-frequency components.
APPENDIX 21 ──────────────────────────────────────────────────── Window processing Fourier transform is defined as the integration from negative infinity to positive infinity, but in actual measurement this calculation is not possible. Therefore only a limited segment of the continuous signal is taken for processing. This is called window processing.
APPENDIX 22 ──────────────────────────────────────────────────── Window function When a limited segment of the input signal is captured, a function can be applied to reduce the leakage error. This function is called the window function. To minimize the leakage error, a suitable window should be chosen which matches the type of input signal. Possible window types include rectangular, Hanning, exponential, flat-top, minimum, force, etc.
APPENDIX 23 ──────────────────────────────────────────────────── 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 ──────────────────────────────────────────────────── Appendix 3 Reference
APPENDIX 24 ──────────────────────────────────────────────────── Appendix 4 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 the viewer by following the procedure below. 1.
APPENDIX 25 ──────────────────────────────────────────────────── Appendix 4.1 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.
APPENDIX 26 ──────────────────────────────────────────────────── Appendix 4.2 Waveform Viewer Menus The following is the complete menu tree of the waveform viewer application. [File] [View] [ Open ] Refer to Appendix 4.3. [ Save All ] Refer to Appendix 4.4. [ Save Between Cursors ] Refer to Appendix 4.4. [ Batch Conversion ] Refer to Appendix 4.5. [ Exit ] Refer to Appendix 4.1. [ Toolbar ] Refer to Appendix 4.1. [ Status Bar ] Refer to Appendix 4.1.
APPENDIX 27 ──────────────────────────────────────────────────── Right-click with the mouse in the waveform display screen for the following functions.
APPENDIX 28 ──────────────────────────────────────────────────── Appendix 4.3 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.
APPENDIX 29 ──────────────────────────────────────────────────── 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.
APPENDIX 30 ──────────────────────────────────────────────────── Waveform jump function Select [View], then [Jump] to jump to the trigger position or the positions of the A or B cursors. Time Notation Select [View], then [Time Notation]. You can select the time notation on the waveform display screen. Setting Grid Type Select [View], then [Grid Type] on the menu to set the type of grid (None, Standard, or Fine).
APPENDIX 31 ──────────────────────────────────────────────────── Appendix 4.4 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.
APPENDIX 32 ──────────────────────────────────────────────────── Appendix 4.5 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, leftclick 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.
APPENDIX 33 ──────────────────────────────────────────────────── Appendix 5 Size of a Waveform File In the memory function (Binary data) Size of a file = header + data Size of a header = number of W header + number of B header + number of C header + number of L header + number of S header + number of P header Number of W header = 1 Number of B header = To save in either analog or logic is 1; to save in both analog and logic is 2 Number of C header = number of analog channels to be saved Number of L heade
APPENDIX 34 ──────────────────────────────────────────────────── In the recorder function (Binary data) Size of a file = header + data Size of a header = number of W header + number of B header + number of C header + number of L header + number of S header + number of P header Number of W header = 1 Number of B header = To save in either analog or logic is 1; to save in both analog and logic is 2 Number of C header = number of analog channels to be saved Number of L header = number of logic probes to be
APPENDIX 35 ──────────────────────────────────────────────────── In the memory function (text data) Size of a file = header + data Size of a header = 170+27*number of analog channels+64*number of logic probes Size of a data = (17+15 x number of analog channels+9 x number of logic probes) x (recording length[DIV] x 100+1) Number of analog channels = 4 : 32 Mwords (standard) Logic not saved Recording length 30 50 100 200 500 1000 2000 5000 10000 20000 50000 100000 200000 500000 1000000 2000000 All logi
APPENDIX 36 ──────────────────────────────────────────────────── In the Recorder function (text data) (bytes) Size of a file = header + data Size of a header = 170 + 27 x number of analog channels + 64 x number of logic probes Size of a data = (17+30 x number of analog channels+18 x number of logic probes) x (recording length[DIV] x 100+1) Number of analog channels = 4 : 32 Mwords (standard) Logic not saved Recording length : 128 Mwords (expansion) 0 30 50 100 200 500 1000 2000 5000 10000 20000 50000
INDEX 1 _____________________________________________________________________________________________ INDEX -A- Channel mode 53 Character entry 109 17,21,116 A/B cursor 189 Clamp on probe AAF 120 Coherence 91 11 Comment 107 AC power supply ii Accessories 40 Common mode APPENDIX4 APPENDIX6,APPENDIX18 Communication 191 17 Additional recording function Aliasing Commercial power frequency measurement 124 Analysis channel 66 Conversion cable Analysis mode 65 Conversion ratio meth
INDEX 2 _____________________________________________________________________________________________ Duty ratio 141,APPENDIX13 -EESC Head up/down 24 Histogram 84 Hold 126 Host name 192 5 Editor command 172 End block 134 -I- APPENDIX1 IP address 193 Evaluation result 144 Index file 46 Event mark 163 Integration 127 Event search 163 Interface Error message 56,APPENDIX22 Exponential 191,202 63 Interpolation 60,APPENDIX9 Exponential averaging -L- 46,73 Extension 54 Ex
INDEX 3 _____________________________________________________________________________________________ 202 RS-232C -O- Rated supply frequency 11,13 Rated supply voltage 11,13 44,188 Octave analysis 92 Real time print Octave filter 71 Recorder & memory function Operator Option 31 150,APPENDIX14 Recording length 37,133 ii Recording paper ix,24,26 56,APPENDIX22 Rectangular -P- 135 Ref block 58 Reference data PC card 202 Reference junction compensation 122 PRINT key 186 Report pr
INDEX 4 _____________________________________________________________________________________________ Time search 164 Time to maximum value 141,APPENDIX10 Time to minimum value 141,APPENDIX10 107 Title comment 85 Transfer function 62,136 Trigger mode 160 Trigger search -UUnbalanced input APPENDIX5 90 Unit impulse response Upper-lower print 184 User name 197 -VVariable function 99 Variable recording length 37 Vernier function 113 View function 158 116,118,121 Voltage measurement
HIOKI 8855 MEMORY HiCORDER Instruction Manual Publication date: November 2006 Revised edition 7 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. 背表紙幅設定 3. 2 ページめの背表紙の厚さも同じに設 定する。 4. モノクロ、A3 でドキュテック本体に送 付する。 INSTRUCTION MANUAL For...は専用機種。複数の場合は「,」で区切る。不要の場合はとる。 形名を入力。 複数の場合は改行 8855 品名を入力。 MEMORY HiCORDER 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.
