5335B Power Meter User Manual
Safety Summary The following safety precautions apply to both operating and maintenance personnel and must be followed during all phases of operation, service, and repair of this instrument. Before applying power to this instrument: • Read and understand the safety and operational information in this manual. • Apply all the listed safety precautions. • Verify that the voltage selector at the line power cord input is set to the correct line voltage.
ii Do not use this instrument in an electrical environment with a higher category rating than what is specified in this manual for this instrument. You must ensure that each accessory you use with this instrument has a category rating equal to or higher than the instrument’s category rating to maintain the instrument’s category rating. Failure to do so will lower the category rating of the measuring system.
iii • In air temperatures exceeding the specified operating temperatures. • In atmospheric pressures outside the specified altitude limits or where the surrounding gas is not air. • In environments with restricted cooling air flow, even if the air temperatures are within specifications. • In direct sunlight. This instrument is intended to be used in an indoor pollution degree 2 environment. The operating temperature range is 0◦ C to 40◦ C and 20% to 80% relative humidity, with no condensation allowed.
iv known-operating voltage sources and test for both DC and AC voltages. Do not attempt any service or adjustment unless another person capable of rendering first aid and resuscitation is present. Do not insert any object into an instrument’s ventilation openings or other openings. Hazardous voltages may be present in unexpected locations in circuitry being tested when a fault condition in the circuit exists.
v Safety Symbols DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury. WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury CAUTION indicates a hazardous situation which, if not avoided, will result in minor or moderate injury A Caution. Refer to the text near the symbol. Electric Shock hazard Alternating current (AC) Chassis ground Earth ground On (Power).
Contents Contents 1 General Information 1.1 Features . . . . . . . . . . 1.2 Front Panel . . . . . . . . 1.3 Rear Panel Summary . . . 1.4 Power Line Connection . . 1.4.1 Fuse Requirements 1.4.2 Power-up Sequence vi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CONTENTS vii 6 Waveform Display Function 6.0.1 Trigger Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.1 Trigger Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.1.1 External trigger input (Ext) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 27 28 29 7 Harmonic Measurement Function 7.1 Bar Graph Mode . . . . . . . . 7.2 List Mode . . . . . . . . . . . 7.3 Setup Menu . . . . . . . . . . 7.
Chapter 1 General Information Note: The contents of this manual and included specifications are subject to change go to for the latest version. The BK5335B power meter measures AC and DC inputs up to 600Vrms and 20Arms from DC to 100kHz. It measures voltage, current, power, frequency, power factor, phase and harmonic parameters up to the 50th order. Remote control is available over USB, GPIB, RS232 and LAN communication interfaces. Voltage and current measurement precision is nominally 0.1%. See Figure 1.
CHAPTER 1. GENERAL INFORMATION 2 1.2 Front Panel Figure 1.1: Front Panel Key Power Button Rotary Knob 4.3” LCD Arrow Keys USB Soft-keys Main Functions Soft-keys Menu, Enter, ESC Print (Screen Capture) Name and function Waveform Display key: press to view waveforms. See Chapter 6 Harmonic Measurement key: For viewing harmonic measurements. See Chapter 7 Basic Measurement key: The normal measurement screen. See Chapter 4 Integral Measurement key: Measurements over time.
CHAPTER 1. GENERAL INFORMATION 3 1.3 Rear Panel Summary Figure 1.2: Rear View GPIB Connector AC Line LAN Connector External Current Sensor USB Connector Voltage Input RS-232 Connector Current Shunt Input Synchronization BNC 1.4 Power Line Connection Input power requirements: AC Voltage 110V ±10% or 220V ±10% Frequency 47Hz – 63Hz 1.4.1 Fuse Requirements An AC input fuse is necessary when powering the instrument. Refer to Table 1.1 for the fuse requirements. 1.4.1.1 Fuse Replacement 1.
CHAPTER 1. GENERAL INFORMATION 4 Model Fuse Specification (110V) Fuse Specification (220V) 5335B T 10A, 250 V T 6.3A, 250V Table 1.1: Required Fuses Figure 1.3: Fuse Holder 2. Locate the fuse box in the rear panel, beneath the AC power socket. Figure 1.3 3. With a small flat blade screwdriver, insert the blade into the fuse box slit to pull and slide out the fuse box. 4. Pull out the fuse inside to check and/or replace with the appropriate fuse for the line voltage used. 5.
Chapter 2 Menu Configuration of system-wide settings is done from the “Menu”. Pressing the configuration/system menu, Figure 2.1. button enters the From the main menu, the soft-keys at the bottom of the screen provide access to the configuration screens. See Table 2.1 2.1 MENU > SYSTEM menus From the system menu, system-wide functions are set and viewed. Figure 2.2, details such as the LAN MAC address, date, screen brightness, system initialization (settings reset), and self test are accessed here.
CHAPTER 2. MENU 6 Function Description SYSTEM View and change overall system information and parameters SETUP Device measurement and measurement configuration settings CAL ZERO Zero the meter RATIO SET Change the overall scaling factor for measurements Table 2.
CHAPTER 2. MENU 7 Figure 2.3: COMM Configuration - RS-232 Figure 2.4: COMM Configuration - USB 2.1.2.2 USB This unit operates as a USBTMC (USB Test and Measurement Class) device. There are no configuration options for this interface. Figure 2.4 2.1.2.3 GPIB The GPIB interface may be configured to addresses 1 through 30. Use the arrow keys to select the numeric field beside “GPIB Address” and use the rotary knob to change the value. The user may select each digit by the arrow keys as well. Figure 2.
CHAPTER 2. MENU 8 Figure 2.5: COMM Configuration - GPIB Figure 2.6: COMM Configuration - LAN (DHCP) 2.1.2.4 LAN The LAN (Ethernet) interface may be configured as either DHCP or static. Use the arrow keys to select the IP Mode field. When DHCP is selected, the current IP, subnet, and gateway are shown on screen (Figure 2.6). When “MANU” is selected (static mode) (Figure 2.7), the screen shows fields for setting the IP, subnet, and gateway.
CHAPTER 2. MENU 9 Figure 2.7: COMM Configuration - LAN (Manual (static)) Figure 2.8: System Config Menu 2.1.4 Self Test The unit has a built in self test. This function tests the LEDs, the screen and some of the internal electronics, Figure 2.9. When the test is running, it cycles through colors on the LCD, and lights up the individual LEDs that illuminate the front panel buttons. When complete, the results are displayed on screen, DONE for the LCD and LEDs, and OK for the internal electronic tests.
CHAPTER 2. MENU 10 Figure 2.9: System Self Test Figure 2.10: System Initialize Menu 2.2 MENU > SETUP menus From the “MENU” function, the next page is the “SETUP” soft-key (Figure 2.11). This screen essentially gives a summary of the settings controlling measurements. 2.2.1 Averaging Setup When measuring low frequency signals where measurements begin to become unstable, averaging may be useful. To enable averaging enter the “Average Setup” menu (Menu>Setup>Average Set).
CHAPTER 2. MENU 11 Field Description Average Listing of the average mode settings. Sync Source The measurement synchronization signal source. Line Filter The state of the line filter. Update rate How often to measure Freq Filter The state of the frequency filter. Crest Factor The Crest Factor setting state ExSensor1 External Sensor 1 state (on/off) ExSensor2 External Sensor 2 state (on/off) U_Range The voltage range setting.
CHAPTER 2. MENU 12 State The state of the average function, On or Off. Type Exp or Line. Exp enables index averaging, and Line enables linear averaging. Tcontrol Sets averaging to being either a rolling of repeating average. Count EXP averaging attenuation constant, or LINE average count. 2.2.1.1 EXP - Index averaging Dn = Dn−1 + Mn − Dn−1 k (2.
CHAPTER 2. MENU 13 Figure 2.12: Ratio Set Menu 2.2.3.1 Filter Frequency filter it is inserted in the frequency measurement circuit and may affect frequency measurement. It can be used for filtering high-frequency components of interference to make the measured frequency parameter more accurate. When the frequency filter is switched on, the voltage or current of no more than 200Hz can be measured. The cutoff frequency is 500HZ.
CHAPTER 2. MENU 14 Field Description Sync Source Select the synchronization source: U/I/OFF. The overall interval of the signal voltage, current or data updating cycle can be selected as the synchronization source for measurement. Freq Filter Set the status of the frequency filter. When “ON” is selected, the frequency filter is turned on. When “OFF” is selected, the frequency filter is turned off. Line Filter Set the status of theline filter. When “ON” is selected, the line filter is turned on.
CHAPTER 2. MENU 15 Field Description State ON/OFF - Enable or disable inrush measurement. Trig Level(A) The current level to triggin inrush measurement Delay Time(ms) The hold off time following a trigger to start measurement Measure Time(s) The duration of the measurement following trigger and delay 2.3 CAL ZERO Perform a zero calibration of the unit. Enter this menu via “Menu>Cal Zero”. 2.4 RATIO SET This setting has the effect of scaling the measured value of the current and voltage.
CHAPTER 2.
Chapter 3 External Current Sensor More information to be added in future versions of this documentation. When using an external current sensor, the power meter has more current range options. Sensor Input Crest Factor Ranges EXT1 Crest Factor 3 (CF=3) 2.5 V, 5 V, 10 V EXT1 Crest Factor 6 (CF=6) 1.25 V, 2.5 V, 5 V EXT2 Crest Factor 3 (CF=3) 50 mV, 100 mV, 200 mV, 500 mV, 1 V, 2 V EXT2 Crest Factor 6 (CF=6) 25 mV, 50 mV, 100 mV, 250 mV, 0.5 V, 1 V Table 3.
Chapter 4 Measurement Setup Central to setting the proper range of the instrument is the Crest Factor. Crest factor is the ratio of the peak value of a waveform to the RMS value of the waveform. For example, a perfect sine wave crest factor RMS value is 0.707*Peak. The crest factor is the inverse of the normalized RMS value, 0.707−1 = 1.414. In many cases, like the current waveform of a AC-DC power supply, the crest factor is a larger value.
CHAPTER 4. MEASUREMENT SETUP 19 1. In the “Meter” interface Press the soft key corresponding to either “U-RANGE” or “A-RANGE”, and use the knob or the arrow keys to select the voltage or current range desired. See Table 4.1 2. Press the “Enter” key to confirm the setting. Otherwise the instrument will automatically confirm and exit the setting after 5 seconds of no activity. CF 3 CF6 Voltage 15, 30, 60, 150, 300, 600V 7.
CHAPTER 4. MEASUREMENT SETUP 20 4.2 Measurement interval The measurement interval is the time during which data is taken. The fundamental frequency of the measured signals restricts the measurement intervals that yield meaningful results. For example, measuring 10Hz with an interval of less than the 0.5s setting will not yield stable results. The unit needs a number of cycles to be present to determine the frequency, and measurement intervals are not synchronized to the input.
CHAPTER 4. MEASUREMENT SETUP 21 Figure 4.2: Measurement Timing 2 Function Description Sync Source Synchronization Source, the source used to determine the measurement interval. May be set to voltage (U), current (I) or turned off. Freq Filter Enable or disable the Frequency Filter. Line Filter Enable or disable the Line Filter. Crest Factor Set the crest factor to 3(CF3), or 6 (CF6) (See Section 4.0.
CHAPTER 4. MEASUREMENT SETUP 22 Line filter It is inserted in the voltage and current measurement circuit and has direct influence on measurement of the voltage, current and power. When the line filter is switched on, noise and high-frequency components from the inverter or distortion waveform can be filtered. The cutoff frequency is 500Hz. 4.4 Averaging Function 1. Select ⇒ SET UP ⇒ AVERAG SET to enter the configuration page of the averaging function. 2.
CHAPTER 4. MEASUREMENT SETUP Dn The value displayed after the nth index averaging, (D1 , the value displayed after the first averaging, is equal to M1) Dn−1 The value displayed after the (n-1)th index averaging Mn the nth measured data. k attenuation constant (1-64) 4.4.2 Linear averaging Dn = Mn−(m−1) + . . .
Chapter 5 Meter Display The 5335B has 3 configurable display formats. Each format also allows for 5 different configured sets of measurement. 1 large and 6 small, 4 large and 6 small, or 12 small measurements may be displayed. See Figures 5.1, 5.2, 5.3. 5.0.1 Operation steps 1. Press 2. The “View” soft-keys select the display format (1,4,12). Repeated press of the soft-key cycles through the different configurations, up to 5 of them. 3.
CHAPTER 5. METER DISPLAY 25 Figure 5.1: 1 main measurement Figure 5.
CHAPTER 5. METER DISPLAY 26 Figure 5.
Chapter 6 Waveform Display Function The 5335B power meter displays waveform representations of the sampled data measured. This function is designed to be similar to an oscilloscope with many of the typical functions of oscilloscopes available, like trigger, run/stop and single trigger. The capture of data is not limited to that displayed onscreen, the measurement interval is also involved. For example, measuring a 15Hz signal with the interval set to 0.
CHAPTER 6. WAVEFORM DISPLAY FUNCTION 28 Parameter name Parameter descriptions V_RANGE Voltage range setting: press to set the voltage range A_RANGE Current range setting: press to set the current range RUN/STOP Run/stop: press to run or stop waveform capture SINGLE Single measurement: pressing this stops capture and proceeds with a single capture of data following a trigger event.
CHAPTER 6. WAVEFORM DISPLAY FUNCTION Mode trigger mode Slope trigger slope 6.1.1 External trigger input (Ext) When the trigger source is set as Ext, input the trigger signal into the external signal input interface (Synchronous) of the rear panel according to the following specifications. Projects Specification Interface type BNC interface Input level TTL Minimum pulse width 1µs Trigger delay time Within (1µs + 3 sampling cycles) NOTE: When the voltage higher than 0-3.
Chapter 7 Harmonic Measurement Function With the 100kHz bandwidth, the 5335B power meter can realize harmonic measurement of high speed and wide dynamic range. The voltage, current, active power, reactive power, phase of harmonics and total harmonic distortion (THD) factor can be tested in harmonic measurement mode. Display of harmonic parameters is either in list or bar chart form for clear analysis of test results.
CHAPTER 7. HARMONIC MEASUREMENT FUNCTION 31 h! Figure 7.1: Bar graph mode - Harmonics h! Figure 7.2: Selecting Specific Harmonics 7.2 List Mode button (if not in the harmonic mode already), then select “LIST” from Enter this mode by pressing the the on-screen soft-keys. This list is used for showing the voltage, current, active power, reactive power, phase and total harmonic distortion (THD) factor of different harmonics. Harmonic lists can be displayed as a complete, odd, or even set. See Figure 7.3.
CHAPTER 7. HARMONIC MEASUREMENT FUNCTION Figure 7.
CHAPTER 7. HARMONIC MEASUREMENT FUNCTION 33 7.3 Setup Menu The setup menu allows the user to set the distortion factor calculation formula, PLL source, and set of harmonics to analyse and display. From the Harmonic Measurement function, , press the “MENU” soft-key. Figure 7.4: Harmonic Measurement Setup Menu 7.3.1 Parameters Use the arrow keys to select the different parameters, and if numeric, the rotary knob to set the value, or the soft-keys. THD Formal Distortion factor calculation formula.
CHAPTER 7. HARMONIC MEASUREMENT FUNCTION 34 Measurement function %r Harmonic distortion factor of voltage U (k) U (total) Harmonic distortion factor of current I(k) I(total) Harmonic distortion factor of active power P (k) P (total) √ max ∑ U (total) √ I(k)2 I(total) √ max ∑ max ∑ (7.3) (7.4) U (k)2 max ∑ I(k)2 (7.6) I(1) P (k)2 k=2 (7.7) P (1) √ U (k)2 (7.5) k=2 max ∑ P (total) √ (7.2) U (1) √ P (k)2 k=2 Total harmonic distortion rate of active power max ∑ max ∑ (7.
CHAPTER 7. HARMONIC MEASUREMENT FUNCTION time is approximately more than or equal to 150ms (data measurement interval and data processing time). Therefore, select the data update rate of 250ms or more for measurement and display of harmonic data.
Chapter 8 Integral Operation Function Access the integration function by pressing the “Integ” button. This function integrates power and current measurements over time to generate measurements in producing (sold) or consuming (buying) directions. The 5335B power meter can be used for integral operation of the current and power of the input unit. Technical indicators can be calculated.
CHAPTER 8. INTEGRAL OPERATION FUNCTION Figure 8.2: Meter Display Parameter name Parameter descriptions V_RANGE Voltage range setting: press the soft key corresponding to this parameter to set the voltage range. A_RANGE Current range setting: press the soft key corresponding to this parameter to set the current range. RUN/HOLD Run/hold: press the soft key corresponding to this parameter to run or hold the integral function. RESET Reset.
CHAPTER 8. INTEGRAL OPERATION FUNCTION Character Function description Mode Display the integral start and stop mode. Start mode: MANUAL and TIME Stop mode: MANUAL, TIME and TINTerval. State Display the current status of the integral function. Start displayed when the integral function is working. Stop displayed when the integral function is interrupted, canceled or stopped. Ready displayed in the ready state of the real-time start mode.
CHAPTER 8.
CHAPTER 8. INTEGRAL OPERATION FUNCTION 40 1. Press “Integ” to enter the integral measurement interface. 2. Press the soft key corresponding to the “SETUP” parameter in the integral measurement interface to enter the integral parameter configuration interface. 8.4.1 Parameter descriptions: Start set in the MANUAL mode or TIME mode via the right soft key. MANUAL press the “START” soft key in the integral measurement interface in the manual start mode to trigger the manual start of the integral function.
CHAPTER 8. INTEGRAL OPERATION FUNCTION 41 8.5 Integration When the integral measurement function is enabled, you can keep the current integral information and carry out the following operations: exit, start and stop. Specific steps are as follows: Operation steps 1. Press “Integ” to enter the integral display interface. 2. In the integral measurement display interface Press the soft key corresponding to the “START” parameter to start or recover integral operation.
Chapter 9 Remote Operation There are four types of communication interfaces available:USB,Ethernet,GPIB and RS232.You can choose any one of them to communicate with a PC. 9.1 RS-232 Interface RS232 interface:use a cable with two COM interface (DB9) to connect power meter and PC. It can be activated by menu key on the front panel.All SCPI commands are available through RS-232 programming. • RS-232 data is a 10-bit word with one start bit and one stop bit.
CHAPTER 9. REMOTE OPERATION 43 Pin # Signal 1 NC 2 TX 3 RX 4 NC 5 GND 6 NC 7 CTS 8 RTS 9 NC Table 9.1: RS-232 (DE-9) Pinout Note that the eledtronic load is configured for 1 start bit and 1stop bit (these values are fixed). The correct interface cables or adapters must be used, as described under RS-232 connector. Note that even if the cable has the proper connectors for your system,the internal wiring may be incorrect.
CHAPTER 9. REMOTE OPERATION 44 The USB488 device capabilities of the power meter are described below: • The device understands all mandatory SCPI commands. • The device is SR1 capable. • The device is RL1 capable. • The device is DT1 capable. 9.3 GPIB interface First conncet GPIB port of power meter to GPIB card of PC. They must be sufficient contact and tighten the screws. And then set address. The address can be set from 0 to 30. 9.
CHAPTER 9. REMOTE OPERATION • The default gateway controls data exchange between networks and protocols to ensure smooth data transmission. • Ask your network administrator about values of default gateway. It is possible that the setting is unnecessary. Use DHCP network to automatically set the default gateway.
Chapter 10 Specifications The specifications listed below are valid and specified for the following conditions: • Warm up time of 30 minutes • Ambient temperature - 23 ± 5◦ • Relative humidity 30 to 75% 46
Power Meter 5335B Specifications Specifications are subject to the following conditions Temperature: 23±5° C, humidity: 30 to 75% RH.
Power Meter 5335B Specifications (cont.) Current Measurement Accuracy and Ranges CF= 3:5 mA, 10 mA, 20 mA, 50 mA, 100 mA, 200 mA, 0.5 A, 1 A, 2 A, 5 A, 10 A, 20 A Direct input range CF= 6:2.5 mA, 5 mA, 10 mA, 25 mA, 50 mA, 100 mA, 250 mA, 0.5 A, 1 A, 2.5 A, 5 A, 10 A External 1 CF = 3: 2.5 V, 5 V, 10 V CF = 6: 1.25 V, 2.5 V, 5 V External 2 CF= 3: 50 mV, 100 mV, 200 mV, 500 mV, 1 V, 2 V CF= 6: 25 mV, 50 mV, 100 mV, 250 mV, 500 mV, 1 V DC to 1 kHz ±(0.1% + 0.2% F.S.) 1 kHz < f ≤ 10 kHz ±{(0.
Power Meter 5335B Specifications (cont.) Harmonic Measurement Parameters Measurement method PLL synchronization Frequency range PLL frequency source range 10 Hz to 1.2 kHz (typical) FFT data length 1024 Window function Rectangle Fundamental frequency (Fund. freq.) Sample rate Window width Upper limit of analysis orders 10 Hz to 75 Hz 75 Hz to 150 Hz 150 Hz to 300 Hz 300 Hz to 600 Hz 600 Hz to 1200 Hz (Fund. freq.) x 1024 (Fund. freq.) x 512 (Fund. freq.) x 256 (Fund. freq.) x 128 (Fund.
Chapter 11 Routine Maintenance This chapter describes general maintenance items and maintenance methods of the 5335B power meter. 11.1 Self-inspection The 5335B power meter has a self-inspection function. See “Power-on Self-Test” of Chapter 3 “Inspecting the Instrument” of 5335B Installation Instructions for detailed steps of self-inspection. 11.
CHAPTER 11. ROUTINE MAINTENANCE Error information Start time is less than current Error information explanation Error description The start time is less than the current time. Possible cause The integral setting is incorrect. Disposal Reset the integral start time. End time is less than current Error description The ending time is less than the current time. Possible cause The integral setting is incorrect. Disposal Reset the integral ending time. Timer must be larger than zero.
CHAPTER 11. ROUTINE MAINTENANCE Error information 52 Error information explanation Error description The oscilloscope function cannot be enabled. Scope openfail Possible cause Communication abnormality Disposal Check the communication cable. Error description Time setting fails. Time set fail Possible cause Time setting is illegal. Disposal Reset the system time. Error description Zero calibration fails. Cal zero fail Possible cause Communication abnormality Disposal Check the communication cable.
CHAPTER 11. ROUTINE MAINTENANCE Prompt information Explanation of prompt information Cal Zero is working! The instrument is calibrating the zero point. Cal Zero is completed! The instrument has completed zero point calibration. Test screen Self-inspection of LCD screen Test dsp Self-inspection of DSP. Test beep Self-inspection of the buzzer. SelfTest is finished! The instrument has finished the self-test. Softkey is not available The current soft key is not available.
CHAPTER 11. ROUTINE MAINTENANCE • Check whether the instrument displays error information. • Use other instruments instead of this instrument for confirmation.
Chapter 12 LIMITED THREE-YEAR WARRANTY B&K Precision Corp. warrants to the original purchaser that its products and the component parts thereof, will be free from defects in workmanship and materials for a period of three years from date of purchase. B&K Precision Corp. will, without charge, repair or replace, at its option, defective product or component parts. Returned product must be accompanied by proof of the purchase date in the form of a sales receipt.
Chapter 13 Service Information Warranty Service: Please go to the support and service section on our website at bkprecision.com to obtain an RMA #. Return the product in the original packaging with proof of purchase to the address below. Clearly state on the RMA the performance problem and return any leads, probes, connectors and accessories that you are using with the device. Non-Warranty Service: Please go to the support and service section on our website at bkprecision.com to obtain an RMA #.