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B&K Precision 891 LCR Meter - User`s Manual
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1. The measurements on the instrument are shown in a different color The component under test may be out of the range of the LCR meter Please see the specifications and ranges of the unit Make sure the component test fixture or Kelvin clip is properly secured to the unit and perform an open and short calibration The front panel keys are not responding to key presses Verify that the instrument is in REMOTE mode RMT will be shown on the front panel in green If it is in REMOTE mode the unit must be changed to LOCAL mode in order to respond to front panel key presses To return to LOCAL mode from the front panel press the key 75 8 Specifications Note All specifications apply to the unit after a temperature stabilization time of 15 minutes over an ambient temperature range of 23 C 5 C Specifications are subject to change without notice Basic Measurement Function Parallel mode Primary Secondary Primary Secondary Cs Q D Rp G Inductance Ls Z Cs QD ts QD Rs Resistance Ip X Conductance Impedance z 0 Admittance o o DC Resistance DCR A OS A Limit setting mode Number of bins 9 Primary 1 Secondary 1 Out of Spec Bin counts Beep warning Trigger Display format Sweep 76 0 000 to 180 00 0 000 A to 9 999 GO Test Signal Frequency 20 Hz to 300 kHz 0 01 Hz 20 00 Hz to 99 99 Hz 0 1 Hz 100 0 Hz to 999 9 Hz Resolution 1 Hz 1
2. 000 kHz to 9 999 kHz 10 Hz 10 00 kHz to 99 99 kHz 100 Hz 100 0 kHz to 300 0 kHz Accuracy seg EA 0 000 to 9999 77 Measurement Accuracy Best accuracy 0 05 Impedance Z Accuracy Zae DC 20 Hz 1kHz 10kHz 100 kHz 200 kHz 1 kHz 10 kHz 100 kHz 200 kHz 300 kHz Impedance 0 10 10 10 1 10 100 0 0 5 1 0 5 1 4 1 100 0 1 kO 0 2 1 0 2 1 0 2 1 0 5 1 1 1 1k0 10k0 0 05 1 0 2 1 05 1 1 1 2 1 10k0 100k02 0 2 1 0 2 1 0 5 1 1 1 2 4 1 1 1 1 1 0 5 1 4 1 1 MO 10 MO 10 1 10MO 20MO 4 1 5 t1 Accuracy is based on test signal level at 1 VRMS slow measurement speed Ae multiply 1 1 at 0 5 VRMS test signal level 1 Capacitance C Accuracy Cae Refer to Measurement Accuracy Chart for Cae when Dx lt 0 1 Cae when Dx gt 0 1 Cae x V1 Dx Dx Measured D value Cae Relative Accuracy of C 2 Inductance L Accuracy Lae Refer to Measurement Accuracy Chart for Lae when Dx lt 0 1 Lae when Dx gt 0 1 Lae x V1 Dx 78 Dx Measured D value Lae Relative Accuracy of L Resistance R Accuracy Rae Refer to Measurement Accuracy Chart for Zae Rae Xx x Zae Xx Measured X value Zae Relative Accuracy of Z Conductance G Accuracy Gae Refer to Measurement Accuracy Chart for Zae when Qx lt 0 1 Zae when Qx gt 0 1 Zae x 1 Qx Qx Measured Q value Zae Relative Accuracy of Z Admittance Y
3. 16 Display OVERVIEW oi aia 7 Display Description morerei al 7 2 Getting Started soii 8 2 1 Input Power Requirements coocccncccncconoconononononoconanonanonanonanonanos 8 ENEE 8 Fuse Require mert teria 9 Le E 9 2 2 Preliminary tee a 10 3 Making Measurements ccccccscsccccccsceccccccscececcecsces 11 3 1 Open and Short Calbratton 11 Open Colibrotion kiiin i 11 Xi 3 2 3 3 3 4 3 5 3 6 ee 11 Parameter ing E 12 Impedance Parameters Sisi 14 Series ana Parallel Models cocinan criticadas 16 Choosing a Test EE 17 Choosing a Measurement Circuit Model 18 Configure Basic Measurement ooccccccncccnnonoccnnnnnnonnnnnacnnnonanonoss 21 Primary Farme ters ninia AA 21 Secondary Parameter S italia daa 22 Parameter eeler 23 Measurement OPTIONS E 23 Measurement Re LEE 24 DEENEN 26 Absolute Mode ua ia 27 ele 28 Bn DI e ii st 30 Table RE 30 Histogram DIS PI aaa 31 Configure Bin FUNCTION cccceeeecccsesececceseesccenseceessecsssusecseeeesess 32 SWEEP FUNCTION ira aia 35 Linear Sweep EE 35 Logarithmic Sweep Mode 36 TODIC DISD EE 36 Configure Sweep EFunpcton 37 AUTOS CALE Ee 39 EEN 39 INTERE is eas 39 System IN OFIMOTION ireen e tans tats ener 44 PP nates 46 communication SetU iia ie tA eas 48 5 Save RECA A e ON 49 Save Recall a Measurement ConfiguratiON oocmmccccicmmmmmoo 51 Save a Measurement Result 54 Savea Ee 57 6 Remote Interface cccccsscsscssccsccescesccsccescesssc
4. 2006 95 EC Low Voltage Directive and 2004 108 EC Electromagnetic Compatibility Directive with the following standards Low Voltage Directive EN61010 1 2001 EMC Directive EN 61000 3 2 2006 EN 61000 3 3 1995 A1 2001 A2 2005 EN61000 4 2 3 4 5 6 11 EN 61326 1 2006 Safety Symbols Refer to the user manual for warning information to avoid hazard or personal injury and prevent damage to instrument Electric Shock hazard Alternating current AC Chassis earth ground symbol Ground terminal On Power This is the In position of the power switch when instrument is ON Off Power This is the Out position of the power switch when instrument is OFF CAUTION indicates a hazardous situation which if not avoided will result in minor or moderate injury WARNING indicates a hazardous situation which if not avoided could result in death or serious injury DANGER indicates a hazardous situation which if not avoided will result in death or serious injury NOTICE is used to address practices not related to physical injury Table of Contents Safety SUMMA Vi aos i Compliance Statements viii Sal Ely IMD EE X 1 General INTOFMALION sii 1 ch o EEN 1 k2 Package Contents ninia 1 Lo ErontPaerOVE iWorld 3 Front Panel Describa ao 3 TA KVP ad Re 4 Main Keypad Description 4 Menu Keypad Description 5 15 Rear Panel e 6 Rear Panel Description Error Bookmark not defined
5. Interpolation bh rsch CH EEN o aT P CAN bh ech mmh mmh wh 13 When finished you may clear the sweep data by using the CLEAR softkey option 4 System The system menu allows the user to view the system information configure system setup and communication setup Press the SYSTEM function to enter this submenu 43 SYSTEM SYSTEM COMH CAL INFO SETUP SETUP Figure 4 1 System Submenu System Information Press the SYSTEM INFO function key to view the system information The following screen will be shown Mode 891 Serial Number LCR89177416699 Version 1 287 1 08 1 04B RTC Battery 3 15 Y Front USB ID YID 058Fh PID 6387h USB Product Mass Storage GPIB Address 1 MAC Address 00 17 F8 00 FF 03 SYSTEM SYSTEM COMM CAL INFO SETUP SETUP Figure 4 2 System Information In the system information page the user can view the following e Model e Serial Number e UI Firmware Version Hardware Version GPIB Version e Real Time Clock Battery Information e Front USB Identification e USB Product Information e GPIB Address e MAC Address e Current IP Address 44 e Current Subnet Mask e Current Gateway Clear Errors In this menu page the user also has the ability to clear any errors as indicated in the bottom right corner of the screen with a red ERR which may occur To do so press the CLEAR ERROR option softkey to clear all errors This has the same effect as sending the CLS command
6. NR1 gt bin 9 lt NR1 gt out of specification bin lt NR1 gt and secondary bin lt NR1 gt LIMit BIN 1 9 lt NRf NRf s Set or return the limit value of the bin 1 9 lt NRf NRf gt lt low high gt SECondary lt NRf NRf gt Set or return the limit value of secondary bin lt NRf NRf gt lt low high gt NOMinal lt NRf ds Set or return the nominal value of tolerance mode TRIGger Trigger a measurement of bin count DISPlay Display subsystem FONT lt NORMal 0 LARGe 1 Set or return display font gt MODE lt DECimal 0 Set or return display mode SClentific 1 gt PAGE lt BIN O Select or return measurement function MEASurement 1 page SWEEp 2 SYSTem 3 gt PRimary DIGit lt NR1 ds Set or return primary digits SECondary DIGit lt NR1 gt Set or return secondary digits and secondary lt NRf gt reading FORMat Format subsystem DATA lt ASCii O REAL 1 Select or return the data format to be ASCII gt code or binary code FREQuency lt NRf gt Set or return test signal frequency LEVel Level subsystem AC lt NRf gt Set or return test signal level 0 5 or 1 MEASurement Measurement subsystem FUNCtion lt CSQ O CSD 1 Set or return the measurement function CSR 2 CPQ 3 CPD 4 CPR 5 CPG 6 LSQ 7 LSD 8 LSR 9 LPQ 10 LPD 11 LPR 12 LPG 13 ZTH 14 YTH 15 RX 16 GB 17 DCR 18 gt RANGe lt HOLD O AUTO 1 gt RESUI
7. air inlet and exhaust ports If mounted in a rack position power devices in the rack above the instrument to minimize instrument heating while rack mounted Do not continue to operate the instrument if you cannot verify the fan is operating note some fans may have intermittent duty cycles Do not insert any object into the fan s inlet or outlet For continued safe use of the instrument e Do not place heavy objects on the instrument e Do not obstruct cooling air flow to the instrument e Do not place a hot soldering iron on the instrument e Do not pull the instrument with the power cord connected probe or connected test lead e Do not move the instrument when a probe is connected to a circuit being tested vil Compliance Statements Disposal of Old Electrical Electronic Equipment Applicable in the European Union and other European countries with separate collection systems This product is subject to Directive 2002 96 EC of the European Parliament and the Council of the European Union on waste electrical and electronic equipment WEEE and in jurisdictions adopting that Directive is marked as being put on the market after August 13 2005 and should not be disposed of as unsorted municipal waste Please utilize your local WEEE collection facilities in the disposition of this product and otherwise observe all applicable requirements viii CE Declaration of Conformity This instrument meets the requirements of
8. 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 Fuse replacement Fuse replacement must be done by qualified service trained maintenance personnel who are aware of the instrument s fuse requirements and safe replacement procedures Disconnect the instrument from the power line before replacing fuses Replace fuses only with new fuses of the fuse types voltage ratings and current ratings specified in this manual or on the back of the instrument Failure to do so may damage the instrument lead to a safety hazard or cause a fire Failure to use the specified fuses will void the warranty Servicing Do not substitute parts that are not approved by B amp K Precision or modify this instrument Return the instrument to B amp K Precision for service and repair to vi ensure that safety and performance features are maintained Cooling fans This instrument contains one or more cooling fans For continued safe operation of the instrument the air inlet and exhaust openings for these fans must not be blocked nor must accumulated dust or other debris be allowed to reduce air flow Maintain at least 25 mm clearance around the sides of the instrument that contain
9. chemicals or finely divided particulates e Inrelative humidity conditions outside the instrument s specifications e In environments where there is a danger of any liquid being spilled on the instrument or where any liquid can condense on the instrument e In air temperatures exceeding the specified operating temperatures e In atmospheric pressures outside the specified altitude limits or where the surrounding gas is not air e In environments with restricted cooling air flow even if the air temperatures are within specifications e Indirect sunlight This instrument is intended to be used in an indoor pollution degree 2 environment The operating temperature range is O C to 40 C and 20 to 80 relative humidity with no condensation allowed Measurements made by this instrument may be outside specifications if the instrument is used in non office type environments Such environments may include rapid temperature or humidity changes sunlight vibration and or mechanical shocks acoustic noise electrical noise strong electric fields or strong magnetic fields Do not operate instrument if damaged If the instrument is damaged appears to be damaged or if any liquid chemical or other material gets on or inside the instrument remove the instrument s power cord remove the instrument from service label it as not to be operated and return the instrument to B amp K Precision for repair Notify B amp K Precision of the nature
10. low values of the Y Axis if AUTOSCALE is ON the meter will automatically scale the Y axis and the step value Step can be set to 1 2 5 and 10 points per sweep step Turn AUTOFREQ ON if you would like the meter to automatically select the start and stop frequency Turn INTERP ON if you would like to have interpolated data included in the sweep result only valid if step is 2 5 or 10 Connect the test leads to the component under test or insert component into the test fixture Press the START softkey to execute the sweep function with the current parameters The display will do an initial scan and analyze the component connected to the input to determine the frequency sweep range if AUTOFREQ is ON The below screen will display during the scan START AUTOFREO 30 00uF YRMS STOP AUTOFREO W d 100 0k 200 0k HEAS FUNC BIN SWEEP DISP SYSTEM C LZR DCR TOL ABS LIN LOG GRAPHITE If needed press the STOP softkey to terminate the sweep function immediately While sweeping the instrument may occasionally display the below screen if a measurement requires more than 1000 ms to complete This is normal 40 Z 8 START AUTOFREO HI AUTOSCALE START VRMS STOP AUTOFREQ LO AUTOSCALE FREQ STEP 5 MAP AUTOSCALE 2 ON OFF br FREQ ON OFF 100 0k 200 0k HEAS FUNC BIN SWEEP DISP SYSTEM C L Z R DOCR TOL ABS LIH LOG GRAPHER E 10 After the sweep is completed the display will show one of the following graphs Note W
11. meter to log measurement results directly to the connected USB flash drive The LCR meter will create a folder called LOG in the flash drive and store the bin log files BLOGxxxx TXT in this folder The feature will work in both absolute mode and tolerance mode The following is a sample of the generated data log 47 BIN TOLERANCE Cs D FREQ 1 000 kHz RANGE AUTO NOM 22 00uF LEVEL 1 VRMS SPEED FAST BIN LOW LMT HIGH LMT 1 HERE 1000 000 2 000 5 000 000 LO OO 9 SEC TEST RESULT NO Value Cs 22 8uF 22 8uE 22 30F 22 8uE 2014 04 29 16 48 01 Figure 4 4 Bin Log Text Result Communication Setup Press the COMM SETUP function key to edit the communication setup such as GPIB address IP mode IP address subnet mask and gateway The following parameters will be displayed Table 4 3 Communication Setup Menu Parameter Description Input GPIB Address Set the GPIB address ir Configure the IP mode to setup the IP Mode LAN as DHCP Auto or static AUTO MANU Manu IP Address Set the instrument IP address Subnet Mask Set the instrument Subnet Mask GPIB Address 01 IP Mode MANU IP Address 010 000 000 200 subnet Mask 255 255 255 000 Gateway 010 000 000 001 SYSTEM SYSTEM COMM CAL INFO SETUP SETUP Figure 4 5 Communication Setup Screen For further information on the communication setup see Interface Configuration section 5 Save Recall The 891 has built in non volatile m
12. of any contamination of the instrument Clean the instrument only as instructed Do not clean the instrument its switches or its terminals with contact cleaners abrasives lubricants solvents acids bases or other such chemicals Clean the instrument only with a clean dry lint free cloth or as instructed in this manual Not for critical applications This instrument is not authorized for use in contact with the human body or for use as a component in a life support device or system Do not touch live circuits Instrument covers must not be removed by operating personnel Component replacement and internal adjustments must be made by qualified service trained maintenance personnel who are aware of the hazards involved when the instrument s covers and shields are removed Under certain conditions even with the power cord removed dangerous voltages may exist when the covers are removed To avoid injuries always disconnect the power cord from V the instrument disconnect all other connections for example test leads computer interface cables etc discharge all circuits and verify there are no hazardous voltages present on any conductors by measurements with a properly operating voltage sensing device before touching any internal parts Verify the voltage sensing device is working properly before and after making the measurements by testing with known operating voltage sources and test for both DC and AC voltages Do not
13. see SCPI Common Commands section remotely Set to Factory Default To set instrument settings to factory default press the RESET option softkey The instrument will change all settings to default and the screen will return to the main measurement display Below is a table of the factory default settings Table 4 1 Default Settings Auto o Test range Auto Test speed Slow 45 Sweep display Sweep start frequency 20 00 Hz Sweep stop frequency 300 0 kHz Sweep Autoscale Sweep step System LCD brightness SQ System beep pom System Bin Log pom System communication GPIB address System communication IP mode System Setup To edit the system setup press the SYSTEM SETUP function key Use the arrow keys to edit system settings such as date time LCD brightness system beep Bin Log function and the Auto Scale for the sweep mode The following table describes the available setup options Table 4 2 System Setup Menu Parameter Description Input Time Set the time in 24 hour format unen HH MM SS y Set the LCD brightness level Numeric Keys 0 9 Configure the system beep ON OFF Configure data logging to external USB flash for bin mode ONOR 46 Date H D 14 10 71 ime H M 5 14 19 46 Brightness 9 Beep OFF Bin Log ON SYSTEM SYSTEM COMM CAL INFO SETUP SETUP Figure 4 3 System Setup Screen Bin Log When Bin Log setting is enabled ON in the System Setup it allows for the LCR
14. 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 amp 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 To help us better serve you please complete the warranty registration for your new instrument via our website bkprecision com Exclusions This warranty does not apply in the event of misuse or abuse of the product or as a result of unauthorized alterations or repairs The warranty is void if the serial number is altered defaced or removed B amp K Precision Corp shall not be liable for any consequential damages including without limitation damages resulting from loss of use Some states do not allow limitations of incidental or consequential damages So the above limitation or exclusion may not apply to you This warranty gives you specific rights and you may have other rights which vary from state to state B amp K Precision Corp 22820 Savi Ranch Parkway Yorba Linda CA 92887 bkprecision com 714 921 9095 85 EFCUMA Ff re Vivi BK 22820 Savi Ranch Parkway Yorba Linda CA 92887 bkprecision com 2015 B amp K Precision Corp Printed in Taiwan v080415
15. the LCD C eg US 13 49 Ge Secondary A 1 90 Cp Measurement DRG Measurement 1 000kHz EYEL 1 VIN FAST Ir Parameters AUTO SPEED MEAS FUNC BIN SWEEP DISP SYSTEM CA H TOL ABS LIM LOG CIMA LARGE Figure 3 10 Measurement Function Display Primary Parameters All primary parameters are listed below 21 Table 3 2 Primary Parameters Parameter Description j equivalent circuit model P parallel equivalent circuit model equivalent circuit model equivalent circuit model Resistance value using a specified AC 8 feqwenyandieg DCR Secondary Parameters All secondary parameters are listed below Table 3 3 Secondary Parameters Parameter Description Quality factor Dissipation factor Equivalent resistance Phase angle Reactance 22 Parameter Combinations The combinations of primary and secondary parameters including the series and parallel combinations are listed below Table 3 4 Parameter Combinations Primary Parameter Series Mode Parallel Mode Cs Q Cs D Cs R Measurement Options The following table lists the measurement parameter options that are configurable for a basic measurement Table 3 5 Measurement Parameter Options Parameter Description Input FUNC Specify the measurement type FREQ Specify the test signal frequency LEVEL Specify the test signal level 23 ev 1 VC RANGE Specify the measurement range control AUTO HOLD SPEED S
16. 1 comparator will execute first and if the measured value is not within bin 1 s limits it will execute the bin 2 comparator and so on For instance if both bins are set to the same limits the larger numbered bin will not be compared because the smaller numbered bin will always count first To measure the value and record the count into the predefined bins users can connect the component and press the TRIG softkey If the flash drive is inserted and the Bin Log option is ON in the SYSTEM SETUP menu see System Setup section each measured value will be recorded onto the flash drive The bin function has two modes absolute mode and tolerance mode Absolute Mode The absolute mode allows users to use absolute values for the high and low limits of each bin The following example shows a typical setup of absolute mode 10 00KHz AUTO 1 YRHS T sal Tv Tom Cor BEEP DOF a mPASS Ea Tie ue 00 5 0uF b s 0LF 46 50uF CLEAR HEAS FUNC BIN SWEEP DISP SYSTEM C LZR DCR TOL LIN LOG BIN HIST Figure 3 15 Bin Mode Table View Absolute Mode 0 0 0 0 0 0 0 0 0 0 0 The following graph is a visual representation of the Bin absolute mode setup demonstrated in Figure 3 16 27 Absolute Mode BIN k N YU Ab ul 0 zl 00 WO 425 43 435 44 445 45 455 46 46 5 47 uF Figure 3 16 Bin Setup Absolute Mode Graph Tolerance Mode The tolerance mode allows the user to set high and low limits value by percentag
17. 1 gt SYStem DATE lt NR1 NR1 NR1 gt BEEPer lt Bool gt BRIGhtness lt NR1 ds ERRor GPIB ADDRess lt NR1 gt IP ADDRess lt NR1 NR1 NR1 NR1 gt CONFig lt STATic MANUal 0 DHCP AUTO 1 gt GATEway lt NR1 NR1 NR1 NR1 gt MASK lt NR1 NR1 NR1 NR1 gt TIME lt NR1 NR1 NR1 as Save measurement result to external USB flash disk RLTOO TXT RLT99 TXT Save screen to external USB flash disk SCROOO BMP SCR999 BMP System subsystem Set or return current date lt year month day gt Set or return beeper state Set or return display brightness status return system error Set or return GPIB address value Set or return Ethernet IP address Set or return Ethernet IP mode Set or return ethernet IP gateway Set or return ethernet IP mask Set or return current time lt hour minute second gt 74 7 Troubleshooting Guide Below are some frequently asked questions and answers Please check if any apply to your instrument before contacting B amp K Precision Q cannot power up the instrument Check that the power cord is securely connected to the AC input and there is live power from your electrical AC outlet Check and confirm that the correct fuse is inserted and not blown Verify that the AC power coming from the mains is the correct voltage The generator can accept a specific range of AC input voltages Refer to section 2 1 Input Power Requirements
18. 15 nF D 0 085 ABORT TOL 0 894 amp SAYE MEASUREMENT JO SAYE HEAS FUNC BIN SWEEP DISP SYSTEM CLZRDCR WE ABS LIN LOG EXE TEL HIST Figure 5 10 Save Measurement Pop Up Window Use the numeric keypad to edit the desired location from 000 to 999 in the memory Press the SAVE softkey option to execute the save function or press ABORT to close the save configuration pop up window If saved successfully the 891RLTxxx TXT File Saved message will be displayed on the screen Save a Screenshot The contents on the LCD screen can be captured using the screenshot function It will create a bitmap file of the entire 480 x 272 pixels of screen The file name of the LCD screen is 891SCRxxx BMP where xxx represents the 000 to 999 locations in the external USB flash drive To make a screenshot of the LCD screen press the key and press the SAVE SCREEN softkey option to show the save screen pop up window as shown below 57 ABORT SAVE SCREEN RWS Filename 91SCRM BHP SAVE HEAS FUNC BIN SWEEP DISP SYSTEM HL ZRDCR TOL ABS AY E NOR ee ET Figure 5 11 Save Screenshot Pop Up Window Use the numeric keypad to edit the desired location from 000 to 999 in the memory Press the SAVE softkey option to execute the save function Or press ABORT to close the save screen pop up window If saved successfully the 891SCRxxx BMP File Saved message will be displayed on the screen 58 6 Remote Interface The i
19. ANGE AUTO NOM 47 00uF LEVEL 1 VRMS SPEED SLOW BIN RESULT ON OFF LOW LMT HIGH LMT Ll ON sch DD SEH E ON ee EICH 000 ON 3 40000 000 ON 4 000 000 ON 5 2 0 00 000 ON 6 000 000 ON Pe OOO 000 ON OO 10 00 ON LOS OO 20200 ON 0 050 Dis 200 OODON UN OC CH 2 3 4 5 6 7 8 J C Se E O Figure 5 7 Tolerance Bin Measurement Text Result 55 BIN ABSOLUTE MEASUREMENT 2014704729 16 42 01 FREQ 1 010 kHz RANGE AUTO LEVEL 1 VRMS SPEED SLOW BIN RESULT ON OFF LOW LMT HIGH LMT ON 43 00uF 43 50uF ON 43 50uF 44 00uF ON 44 00uF 44 50uF ON 44 50uF 45 00uF ON 45 00uF 45 50uF 45 50uF 46 00uF 46 00uF 46 50uF EK EU O O CH CH CO OF kA UN o Figure 5 8 Absolute Bin Measurement Text Result SWEEP MEASUREMENT 2014 04 29 OSA 50 00uF LOW 10 00uF STARTFREQ 20 00 Hz STOPFREQ 300 0 kHz LEVEL gt 1 VRMS SCALE gt LINEAR 1 FREQ 20 000 FREQ 1019 933 FREQ 2019 867 FREQ 3019 800 FREQ 4019 733 FREQ 2980900 PEREOS ZO 9000 FREQ 300000 Figure 5 9 Sweep Measurement Text Result 56 To save the test result first make the measurement of desired test such as single measurement bin or sweep Press the key and press the SAVE MEAS softkey option to show the save measurement pop up window The file name of the measurement result is 891RLTxxx TXT where xxx represents 000 to 999 locations in the external USB flash drive Cs D 10 00KHz AUTO 95 00nF 1 RHS SLOW Cs 94
20. Accuracy Yae Refer to Measurement Accuracy Chart for Zae Yae Zae Dissipation factor D Accuracy Dae Refer to Measurement Accuracy Chart for Zae when Dx lt 0 1 Zae when Dx gt 0 1 Zae x 1 Dx Dx Measured D value Zae Relative Accuracy of Z 79 Example Frequency 1 kHz Level 1 VRMS Measured Cx Value 15 uF Dx 0 122 Step 1 Find Cae Refer to Measurement Accuracy Chart Cae Zae 0 5 Step 2 Find Dae Dx gt 0 1 Zae x 1 Dx 0 005 x 1 0 122 0 005074 0 5074 7 Quality factor Q Accuracy Qae Refer to Measurement Accuracy Chart for Zae when Qx X Dae 1 Zae 2x D when Qx x Dae lt 1 4222 1 Qx x Dae Qx Measured Q value Dae Relative Accuracy of D Zae Relative Accuracy of Z Example Frequency 500 Hz Level 0 5 VRMS Measured Lx Value 1013 mH Qx 10 18 Dx 0 098 Step 1 Find Lae Refer to Measurement Accuracy Chart Ae multiply 1 1 at 0 5 VRMS Zae x 1 1 Lae Dae 0 05 x 1 1 0 055 Step 2 Find Qx x Dae 10 18 x 0 00055 0 00509 Qx x Dae lt 1 2x D 05699 Step 3 Find Qae ee Oi Mirena eee 1 Qx x Dae 1 0 00509 8 Susceptance B Accuracy Bae Refer to Measurement Accuracy Chart for Zae when Qx lt 0 1 Zae when Qx gt 0 1 Zae X 1 Qx Qx Measured Q value Zae Relative Accuracy of Z 9 Phase Angle 8 Accuracy Oae 80 Refer to Measurement Accuracy Chart for Zae 0 Bae x Zae Zae Relative Accuracy of Z Exam
21. ON the instrument The instrument will have a boot screen while loading after which the main screen will be displayed 3 Self Adjust At power on the waveform generator performs a diagnostic self test procedure to check itself for errors 10 3 Making Measurements 3 1 Open and Short Calibration The 891 provides open short calibration capability to have better accuracy in measuring high and low impedance It is recommended that the user perform open short calibration if the test leads or the test fixture has been changed Open Calibration The open calibration feature compensates for any stray admittances that may exist within the test fixture or leads Disconnect any device under test from the test leads or test fixture and make sure the test terminals are open nothing connected Press SYSTEM gt CAL gt OPEN CAL keys to start the open calibration For open calibration open the test leads and press Last Cal 2014 06 23 01 16 16 00 00 10 00KHz 00006 18003 F ho librati or short calibration short the test leads and press gt SHORT Last Cal 2014 06 13 04 56 20 CAL SYSTEM SYSTEM COMM CAL INFO SETUP SETUP Figure 3 1 Open Calibration This open calibration takes about 1 minute to complete After it is finished the 891 will beep rapidly to inform that the calibration is done Short Calibration The short calibration feature compensates for any residual impedances that 11 may exist within the test f
22. SEC DIG FREQ 1 000kHz LEYEL 1 RHS 230 RANGE AUTO SPEED FAST Use arrow key to edit HEAS FUNC BIN SMEEP DISP SYSTEM CA DCR TOL ABS LIN LOG CIMA LARGE Figure 3 12 Display Function Primary and Secondary Digits 3 Press the NOTATION softkey to select the scientific or decimal display 25 Cs 1 352e O5F kee D 1 973e 01 oon SEC DIG FREQ 1 000kHz LEYEL 1 RHS 230 RANGE AUTO SPEED FAST Use arrow key to edit HEAS FUNC BIN SWEEP DISP SYSTEM CA H TOL ABS LIN LOG CIMA LARGE Figure 3 13 Display Function Notation 4 Press the DISP key again to show large readings on the screen Cs 13 32 uF 0 19 HEAS FUNC BIN SWEEP DISP SYSTEM Ca A CU A CI A 1107 LARGE Figure 3 14 Display Function Large Format 5 Press the DISP key to go back to normal readings display 3 5 Bin Sorting Function The bin sorting function is very useful for component sorting in component inspection or quality control It has 9 Primary bins plus a Secondary bin and an Out of specification bin Each bin has high and low limit values If the measured value is within the high and low limits of the bin the bin counter 26 will increment by one with beep function The beep can be turned off or used when the component passes or fails specification The beep tone for each bin is different so that the user can distinguish bins by listening The bin detection sequence is from low to high This means that the bin
23. SSWORD Figure 6 2 Web Server Login Page 62 5 A password is required to login and access the menu items on the page The default admin password is 123456 The web server menu items are described below HOME The HOME page provides general information of the LCR meter Model Number Manufacturer Firmware version Front USB ID product MAC address and IP address LCR Meter Web Control 93 287 1 048 00 r VID 0000h PID 0000h Front USB Product na MAC address eo 17 F8 00 FF 020 IP address 10 000 000 200 ss Copyright c BK Precision V1 02 Figure 6 3 Web Server Home Page CONFIG The CONFIG page provides the setting of date time and brightness 63 LCR Meter Web Control Config 10 09 2014 Date format yyyy mm dd SET 03 48 53 PM Time format hh mm ss SET Brightness 0 Brightness 0 9 SET Copyright c BK Precision V1 02 Figure 6 4 Web Server Configuration Page CONTROL The CONTROL page provides the general control of the LCR meter such as measurement function test frequency test level range and speed The real time measurement result is shown on this page The command line to send and receive SCPI commands can also be accessed here LCR Meter Web Control Control Measurement Cs 13 57 uF D 0 191 Measure Function CS D Freq 1000 Level 0 5 Y Range AUTO Speed SLOW SCPI SCPI command SCPI response Copyr
24. T e el Tase Tel J leif VW BK Model 891 300 kHz Bench LCR Meter USER MANUAL 006 ORC ISIS las eebe 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 e Read and understand the safety and operational information in this manual e Apply all the listed safety precautions e Verify that the voltage selector at the line power cord input is set to the correct line voltage Operating the instrument at an incorrect line voltage will void the warranty e Make all connections to the instrument before applying power e Do not operate the instrument in ways not specified by this manual or by B amp K Precision Failure to comply with these precautions or with warnings elsewhere in this manual violates the safety standards of design manufacture and intended use of the instrument B amp K Precision assumes no liability for a customer s failure to comply with these requirements Category rating The IEC 61010 standard defines safety category ratings that specify the amount of electrical energy available and the voltage impulses that may occur on electrical conductors associated with these category ratings The category rating is a Roman numeral of I Il HI or IV This rating is also accompanied by a maximum voltage of the circui
25. TH 14 YTH 15 Set or return the sweep display limits lt low high gt Set or return the sweep display mode Set or return function in sweep linear graph mode Set or return function in sweep linear table mode Set or return function in sweep linear graph mode 72 RX 16 GB 17 gt CSQ 0 CSD 1 Set or return function in sweep log table CSR 2 CPQ 3 mode CPD 4 CPR 5 CPG 6 LSQ 7 LSD 8 LSR 9 LPQ 10 LPD 11 LPR 12 LPG 13 ZTH 14 YTH 15 RX 16 GB 17 gt FREQuency STARt lt NRf gt STOP lt NRf ds STEP lt NR1 gt STARt lt BOOL gt SWAP lt BOOL gt BUSY CLEar AUTO SCALe lt BOOL gt FREQ lt BOOL gt INTERPolate lt BOOL gt SAVe CONFig lt NR1 gt Set or return sweep start frequency Set or return sweep stop frequency Set or return sweep steps Set or return sweep start running status Set or return the sweep primary and secondary swap parameter Return sweep running status Clear sweep data from memory Set or return sweep auto scale status Set or return sweep auto frequency status Set or return data interpolation This must be enable or disabled before running a sweep Data loss will occur if changed after a sweep Save subsystem Save configuration parameters to internal memory CFGOO CFG CFGO9 CFG or external USB flash disk CFG10 CFG CFG99 CFG 73 MEASurement lt NR1 gt SCReen lt NR
26. Use arrow key to edit 891 CFGOO_CFG File Saved _ SYSTEM BLZRDCR TOL ABS LIN LOG COMM LARGE Figure 5 4 Save Confirmation Message Recall a Measurement Configuration RCL To recall the measurement configuration press the ED key first and then press the RECALL CONFIG softkey to show the save configuration pop up 53 window Cs 1 3 bi jen FILE 0 196 ABORT EXEC RECALL CONFIGURATION RHS Filename 891CFGN CFG EXIST MEAS FUNC BIN SWEEP DISP SYSTEM BLZRDCR TOL ABS LIN LOG CO LARGE Figure 5 5 Recall Configuration Pop Up Window Use the numeric keypad to enter the desired file number to be recalled or use the NEXT FILE softkey option to select the next available configuration file that has been stored in the internal memory or external flash drive Press the EXEC softkey option to execute the recall configuration file or press the ABORT softkey option to close the recall configuration pop up window Save a Measurement Result The measurement result can be saved to an external USB flash drive The format of the saved result is the text file that can be opened by any text editor program such as notepad Three types of measurement results can be saved single measurement bin test and sweep test 54 SINGLE MEASUREMENT 2014 04 29 LORO SD 1 010 kHz 1 VRMS AUTO SLOW 45 02 uF Oven 74 Figure 5 6 Single Measurement Text Result BIN TOLERANCE MEASUREMENT 2014 04 29 LG alread FREQ 1 010 kHz R
27. ates Z is the magnitude and 0 is the phase of the impedance Imaginary Axis y Z R X Z D Real R Axis Figure 3 6 Complex Impedance Plane Z R jX 1Z120 0 R Z cos X Z sin8 IZ VR2 X O tan Z Impedance R Resistance X Reactance Q Ohm There are two different types of reactance Inductive X and Capacitive Xc It can be defined as follows 1 1 X wL 2nfL Xc TZ 15 L Inductance H C Capacitance F f Frequency Hz w Frequency ed el For components the quality factor Q serves as a measurement of the reactance purity In the real world there is always some associated resistance that dissipates power decreasing the amount of energy that can be recovered The quality factor can be defined as the ratio of the stored energy reactance and the dissipated energy resistance Q is generally associated with inductors and D dissipation factor for capacitors Below shows the relationships between these parameters 1 X C TR ol 1 R amp CR fl 1 R 2nfCR Q Quality Factor D Dissipation Factor C Capacitance L Inductance Series and Parallel Models Components are modeled with one of the two following equivalent circuits 16 Xp Rs A Taal Ro Series model Parallel model Figure 3 7 Series and Parallel Models The impedance for the series model is Z R LL The impedance for the parallel model is 1 1 n 1 Z Rp jXp The
28. be displayed in table display If interpolation is turned on interpolated data will be shown in orange The result table can be accessed using the DISP function key FUNC Cp D_ LINEAR 38 31 Hz 999 8 pF PG UP 038kHz 038kHz PG DN 038kHz 038kHz 038kHz INTERP 1 003 nF m OFF 038kHz HEAS FUNC BIN SHEEP DISP SYSTEM 03 kHz CLZRODCR TOL ABS W LOG GRAPH mM Figure 3 29 Sweep Table Display with INTERP ON 3 Ol A O Me ech 1 Pi 3 4 5 6 i 3 H 0 1 2 1 1 NOTE You may save the table sweep results to an external USB flash drive To do so please refer to the Save a Measurement Result section Configure Sweep Function Measurement C START Parameters l SWAP Sweep Graph AUTOSCALE ON OFF AUTO FREQ ON OFF MEAS FUNC BIN SHEEP DISP SYSTEM C LZR DCR TOL ABS LIN LOG GRAPHES E Figure 3 30 Sweep Function 37 There are many parameters that may be configured for each sweep The following table are the different parameters that can be setup in the Sweep function Table 3 8 Sweep Parameter Selections Parameter Description All FUNC Specify the type of sweep measurement combinations Except DCR 0 5 VRMS 1 LEVEL Specify the sweep voltage level VRMS 20H START Specify the sweep start frequency X Axis ne E 20 Hz to 300 STOP Specify the sweep stop frequency X Axis HI Specify the low display value scale Y Axis a Specify the frequency sweep step and lim
29. cription Main Display Area O Displays measurement conditions and measurement results corresponding to the measurement modes O Menu Functions Displays the current measurement mode O Menu Options Displays label options corresponding to the active field 2 Getting Started Before connecting and powering up the instrument please review and go through the instructions in this chapter 2 1 Input Power Requirements Input Power The instrument has a selectable AC input that accepts line voltage and frequency input within AC Input 104 126 V 207 253 V selectable Frequency 47 63 Hz Before connecting to an AC outlet or external power source be sure that the voltage selection switch is at the correct position of 115 V or 230 V and the power switch is in the OFF position Also verify that the AC power cord including the extension line is compatible with the rated voltage current and that there is sufficient circuit capacity for the power supply Once verified connect the cable firmly The included AC power cord is safety certified for this instrument operating in rated range To change a cable or add an extension cable be sure that it can meet the required power ratings for this instrument Any misuse with wrong or unsafe cables will void the warranty Fuse Requirements An AC input fuse is necessary when powering the instrument The fuse is located at the back of the instrument In the event the fuse needs to be
30. e VY and S arrow keys on the option softkey to move the cursor left and right to selected desired digit of increase or 13 decrease Use the INC or DEC on the softkey to increase or decrease the parameter value 5 Ifthe parameter is a selection value press the desired selection on the option softkey Cs 13 92 wu a D 0 198 pl 1 000kHz 1 RHS AUTO FAST a ESC Figure 3 5 Selection Entry 3 3 Impedance Parameters Components such as inductors L capacitors C and resistors R can respond to test signals with varying frequencies and levels in different ways Large capacitors tested at high frequencies can respond differently than when tested at lower frequencies Large inductors tested at low frequencies can respond differently than when tested at higher frequencies In contrast resistors will respond relatively the same at high or low frequencies Due to these characteristics it is very important to understand the complex impedance parameters of the electronic components The 891 LCR meter allows users to vary these test signals measurement frequency measurement level and equivalent circuit choice to characterize the component under test When we analyze the impedance using the impedance measurement plane Figure 3 6 it can be visualized by the real element Resistance on the X axis and the imaginary element Reactance on the Y axis This impedance 14 measurement plane can also be seen as polar coordin
31. e component was tested with 1 kHz or above the measured readings may look erroneous on the display In all cases it is best to check with the manufacturer s data sheet in order to determine the best test frequency to use for measurement Inductance Typically a 1 kHz test frequency is used to measure inductors that are used in audio and RF circuits This is because these components operate at higher frequencies and require that they be measured at higher frequencies above 1 kHz However a 120 Hz test signal is used to measure inductors that are used for applications such as filter chokes in power supplies which are typically operated at 60 Hz AC in U S with 120 Hz filter frequencies In general inductors below 2 mH should be measured at 1 kHz frequency while inductors above 200 H should be measured at 120 Hz In all cases it is best to check with the manufacturer s data sheet in order to determine the best test frequency to use for measurement Choosing a Measurement Circuit Model There are two measurement circuit models to choose from series or parallel when characterizing components under test The LCR meter will make measurements regardless of which model is chosen but components will display more accurate results if the correct measurement model is selected To determine the better model to choose depends on the impedance of the component at the specified frequency 18 Capacitance The impedance in a capacitor is nega
32. e of a nominal value The following example shows a typical setup of tolerance mode 10 00KHz AUTO 1 YRHS T S Klo 1 000 amp i BEEP OFF MEN FAIL SWAF CLEAR HEAS FUNC BIN SWEEP DISP SYSTEM CLZRODCR OI LIN LOG BIN HIST Figure 3 17 Bin Mode Table View Tolerance Mode QM GME Me ave GME A ave ave 0 0 0 0 0 0 0 0 0 0 0 The following graph is a visual representation of the Bin tolerance mode setup demonstrated in Figure 3 18 28 Tolerance Mode BIN a Mu bk um OO d OW O 20 Figure 3 18 Bin Setup Tolerance Mode Graph Secondary comparator bin If the measured component primary value is within any of the Primary bin limits and the measured secondary parameter value is not within the Secondary bin limits the secondary bin count will increment by one If the measured primary value and secondary value are not within the high low limits of any bins the Out bin count will increment by one OUT SEC BIN l OUT H TTTTTTTTTTTIIILLIIIIIIIIIIIIIITITTI mech TTT TTT TTT TETTETETT Z z gt E OUT PRI BIN OUT 5 W w L i L rr TT TTT OUT SEC BIN E OUT Primary BIN Figure 3 19 Bin Priorities 29 The bin function has three different display screens to present results of the comparisons Bin Table and Histogram The manual trigger to count can be accessed in any of these displays Bin Display This screen shows the measured value as well as the compared bin number Measuremen
33. ebsite at bkprecision com to obtain a 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 a RMA Return the product in the original packaging 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 Customers not on an open account must include payment in the form of a money order or credit card For the most current repair charges please refer to the service and support section on our website Return all merchandise to B amp K Precision Corp with prepaid shipping The flat rate repair charge for Non Warranty Service does not include return shipping Return shipping to locations in North America is included for Warranty Service For overnight shipments and non North American shipping fees please contact B amp K Precision Corp B amp K Precision Corp 22820 Savi Ranch Parkway Yorba Linda CA 92887 bkprecision com 714 921 9095 Include with the returned instrument your complete return shipping address contact name phone number and description of problem 84 LIMITED THREE YEAR WARRANTY B amp K Precision Corp warrants to the original purchaser
34. ed high and low impedances to choose the correct circuit model There is no exact answer but generally if the impedance is greater than 100 Q use the parallel circuit model Use the series circuit model when the impedance is less than 100 Q Note This is only a typical value In all cases it is best to check with the manufacturer s data sheet in order to determine the best model to use for measurement The following table translates this approximate impedance rule into inductance and capacitance values Table 3 1 Series Parallel Model Guidelines Frequency Capacitors Imductors a Use series Use parallel Use series Use parallel model when model when model when model when gt 16 uF lt 16 uF lt 160 mH gt 160 mH gt 1 6 uF lt 1 6 uF gt 160 nF lt 160 nF 100 gt 160 uH gt 160 pH 20 3 4 Configure Basic Measurement A If the component under test is a capacitor make sure the capacitor has been fully discharged before connecting it to the instrument Failing to discharge the capacitor may damage the instrument and will be considered misuse To measure the component connect the device under test to the test leads or insert it into the test fixture Press MEAS FUNC to select desired primary measurement of C L Z R or DCR To select series or parallel mode as well as the secondary measurement parameters of Q D R G 8 not shown and X not shown press the corresponding softkey to the right of
35. emory that can store 10 sets of measurement configurations With an external USB flash drive users can store an additional 90 sets of measurement configurations and up to 1000 sets each of measurement data results and screen captures Before Save Recall is executed insert the USB flash drive into the front USB flash drive port A short message indicates the USB flash drive has been attached and recognized as shown below Note The USB flash drive is compatible with most FAT32 formatted flash drives 49 Us 13 48 uF Cone D 0 192 Tr FREQ 1 000kHz LEYEL 1 RHS RANGE AUTO SPEED FAST Use arrow key to edit AUSE Flash Plug lam CIA TOL ABS LIN LOG DI LARGE Figure 5 1 USB Flash Detect Message When the button is selected the following options screen will appear and allow the user to save a measurement configuration CONFIG measurement data results MEAS or a screen capture SCREEN Cs 13 48 uF cows D 0 189 Ba SAYE FREQ 1 000kHz LE EL 1 RHS SCREEN RANGE AUTO SPEED FAST ABORT Use arrow key to edit MEAS FUNC BIN SWEEP DISP SYSTEM BLZRODCR TOL ABS LIN LOG MT LARGE Figure 5 2 Save Menu The file folders that store the measurement configuration CFG measurement result RLT and LCD screen BMP will be created by the LCR meter and stored on the USB flash drive 50 Save Recall a Measurement Configuration The following measurement parameters will be saved or recalled during this operati
36. ended to be powered from a CATEGORY II mains power environment The mains power should be 115 V RMS or 230 V RMS Use only the power cord supplied with the instrument and ensure it is appropriate for your country of use Ground the Instrument To minimize shock hazard the instrument chassis and cabinet must be connected to an electrical safety ground This instrument is grounded through the ground conductor of the supplied three conductor AC line power cable The power cable must be plugged into an approved three conductor electrical outlet The power jack and mating plug of the power cable meet IEC safety standards Do not alter or defeat the ground connection Without the safety ground connection all accessible conductive parts including control knobs may provide an electric shock Failure to use a properly grounded approved outlet and the recommended three conductor AC line power cable may result in injury or death Unless otherwise stated a ground connection on the instrument s front or rear panel is for a reference of potential only and is not to be used as a safety ground Do not operate in an explosive or flammable atmosphere Do not operate the instrument in the presence of flammable gases or vapors fumes or finely divided particulates The instrument is designed to be used in office type indoor environments Do not operate the instrument e Inthe presence of noxious corrosive or flammable fumes gases vapors
37. ess GPIB The GPIB address of the LCR meter can be configured from 1 30 To communicate via GPIB connect a GPIB cable to the GPIB port at the back of the LCR meter Follow the instructions below to select and configure the GPIB interface for remote operation 1 From the SYSTEM menu select the COMM SETUP function key 2 From the COMM SETUP menu press any arrow key to highlight the first parameter GPIB Address in this case 3 Once GPIB Address is highlighted use the numeric keypad to input the GPIB address 1 30 is valid and press the ENTER softkey option 4 Press ESC to exit editing parameters LAN Ethernet There are three ways to control the LCR meter via LAN interface Web server Telnet connection and Socket connection Follow the instructions below to select the Ethernet interface and configure it for remote operation 60 From the SYSTEM menu select the COMM SETUP function key From the COMM SETUP menu press the down arrow key multiple times to highlight the IP Mode parameter You have the option between AUTO and MANU Selecting AUTO will allow the unit to request an IP Address Subnet Mask and Gateway automatically in order to communicate properly No other configuration is necessary once AUTO is selected NOTE The unit must already be connected via Ethernet connection and the connected network router must be compatible to assign the correct parameters to the instrument Selecting MANU will allow the user to man
38. essceses 59 6 1 Interface Configuration a A 59 USB Virtual COM od 59 PIB AA Ad a 60 LAN Ethernet yA ia 60 6 2 Parameter Definition cccccccnoooocccnnnnnnnnnonancnnnnnnnnononannnnnnnnnnos 65 63 Del 66 6 4 SCPI Common COMMANAS cccccsssssecccesensseecccsenssecccsseseeees 67 6 5 SCPI Command Subsystem ccccoocccncnnccnncnnnccnnonaconnonanonnnnanonnnonas 67 Troubleshooting Guide cccscsccscsceccccscsceccccscsceececs 75 8 SPEECH 76 Basic Measurement Function sssssssssnsssnsssenssensssenssersssessreesse 76 Measurement ACCUTO sita 78 SERVICE INFORMATION ascii aaa dans 84 LIMITED THREE YEAR WARRANTY scccccccccccccccecscscscscscsees 85 xiii 1 General Information 1 1 Product Overview The B amp K Precision model 891 bench LCR meter is a high accuracy component tester that is capable of testing inductors capacitors and resistors with adjustable test frequency from 20 Hz to 300 kHz The 891 has a 2U half rack form factor and is suitable for standard rack mount installation With the vivid 4 3 inch color graphic LCD users can operate and read the measurements easily Integrated BIN comparator function enables model 891 Bench LCR Meter to quickly sort components up to 10 bins The easy to operate sweep function provides a quick look of the component characteristics over any range of test frequencies With built in USB GPIB and Ethernet interfaces the 891 can be remotely controlled to perf
39. hen sweep is completed if you press any of the arrow keys to select or change any of the sweep parameters all data will be cleared C Cs D START 20 00 Hz HI 100 0nF START VRHS STOP 300 0KHz LO 70 00nF FREQ STEP 10 CLEAR CURSOR LEFT CURSOR 100 0K 700 0K tle MEAS FUNC BIN SHEEP DISP SYSTEM A A CL A LoG MAEI TBL Figure 3 31 Post Linear Sweep Display 41 Cs D START 300 0 Hz HI 120 0nkF START Hp STOP 300 0KHz LO 0 00nF SIEP 1 a A de o e CLEAR Lo CURSOR poo PoE THe TOR TOOK RIGHT MEAS FUNC BIN SHEEP DISP SYSTEM A A TOL ABS LIN EA MAEI TBL Figure 3 32 Post Logarithmic Sweep Display 11 Use the CURSOR LEFT or CURSOR RIGHT softkeys to change the cursor position of the frequency on the curve to read the measured value at that frequency FUNC Cs D START 300 0 Hz HI 120 0nF PSTART LEVEL 1 VRMS STOP 300 0KHz LO 70 00nF 101 9 nF 1 001KHz STEP 1 CURSOR LEFT rime CURSOR TOK T00K RIGHT HEAS FUNC BIN SWEEP DISP SYSTEM CLZ RDCR TOL ABS LIN GRAPHES E Figure 3 33 Post Sweep Point Selection 12 To view all the points for frequency and component values in a table form press the DISP function key 42 FUNC Cp D_ LOGARITHH P NO F L I 00 frt P G UP G DN OE INTERP 0 HEAS FUNC BIN SWEEP DISP SYSTEM CLZRDCR TOL ABS LIN ME GRAPH PG UP PG DN INTERP a OFF nF HEAS FUNC BIN SHEEP DISP SYSTEM A A TOL ABS LIN A GRAPH Figure 3 35 Points Table with
40. ic parameters Table 6 1 SCPI Numeric Parameters Symbol Response Formats lt bool gt Boolean value can be 1 or ON 0 or OFF 65 number float point numeric value String value characters enclosed in single or double quotes New line hex code Ox0Ah Return hex code OxODh All commands should be ended with the lt Rtn gt and lt NL gt and there should be a space between command and numeric parameter 6 3 Error Event List SCPI can offer an error event list that contains up to 10 errors events Users can read the list through the SYStem ERRor command in a first in first out manner Once an error or event is read the read process will clear it from the memory To clear all errors or events from the memory the CLS command can be used The following table lists all the known errors that can be encountered Table 6 2 Error List Error Description 200 Noerror S 66 6 4 SCPI Common Commands The instrument is compatible with most of the common IEEE 488 2 and SCPI commands Common commands generally control overall LCR meter functions such as reset status and synchronization All common commands consist of a three letter mnemonic preceded by an asterisk Commands ended with question mark represent a query command The following table lists the common SCPI commands supported Table 6 3 SCPI Common Commands List Command Description CLS IDN Return the instru
41. ight c BK Precision V1 02 Figure 6 5 Web Server Control Page Log Out will exit the web page and go back to the login screen 64 Telnet Connection The instrument can be connected via LAN Ethernet interface using Telnet client with the following socket port 5024 Socket Connection Socket connection is available for communication via LAN Ethernet interface Users can use socket port 5025 to open a raw socket connection for sending remote commands Note The TCP protocols are used to communicate with the instrument Note When controlling the instrument via LAN the instrument needs to have additional delays of at least 100 ms added between each write operations to ensure a stable connection between the computer and the instrument 6 2 Parameter Definition The instrument supports communication protocols which include standard SCPI commands and a few proprietary commands that follow the SCPI convention This enables users to operate the LCR meter through a computer or a terminal equipped with IEEE 488 2 GPIB USB or LAN interface Additionally it allows remote control and monitoring SCPI IEEE 488 2 also supports multi unit control allowing a user to control up to 30 units Note GPIB and LAN interface have an internal buffer of 100 bytes If multiple commands of the same subsystem are sent in one string note this buffer size will limit how many commands can be sent at once The following table lists all of the numer
42. it 1 2 5 10 number of measured points Specify primary or secondary sweep PRI SEC measurement AT Specify the high display value scale Y Axis 38 If enabled ON the unit will automatically select the HI and LO values Y axis to properly AUTOSCALE display the frequency sweep on the display graph If disabled OFF the manually set user values will be used If enabled ON the unit will automatically select the start and stop frequency based on an initial analysis of the component connected AUTOFREQ to the input and the initial start and stop frequency that is set The start and stop frequency are then adjusted automatically to ensure sufficient interval spacing between each frequency points of the sweep If enabled ON the unit will show interpolated INTERP data in table view and return interpolated data in remote mode The following table specifies the number of points generated with interpolation enabled and disabled Table 3 9 Step Parameter Points Step Number of Points Number of Points Parameter INTERP ON INTERP OFF To run the sweep function perform the following steps 1 Press the SWEEP function key to enter the sweep function 2 Press the DISP function key to select linear or logarithmic scale 3 Press the SWAP softkey if the secondary value is desired to be swept 39 Use the arrow keys to edit the desired measurement parameters such as level start frequency stop frequency high and
43. ixture or leads To perform the short calibration connect all four terminals on the test leads or insert the Shorting Bar into the test fixture Press SYSTEM gt CAL gt SHORT CAL keys to start the short calibration For open pete bd al open the leads and p a Last Cal e 014 08 22 02 57 00 00 00 10 00KHz 00000 F h G lib or short calibration short the test leads and press SCC Last Cal 2014 06 23 01 15 08 SYSTEM SYSTEM COMM CAL INFO SETUP SETUP Figure 3 2 Short Calibration This short calibration takes about 30 seconds After it is finished the 891 will beep rapidly to inform that the calibration is done 3 2 Parameter Entry The test parameters on different measurement functions can vary But they all have similar methods to enter the parameters The following list explains the general method of test parameter entry 1 Use any arrow key to activate the selection cursor 12 Us 13 49 uF S D 0 190 LS gt LEYEL 1 RHS FREQ 1 RANGE AUTO SPEED FAST Em ESC Figure 3 3 Parameter Selection d A Ze use a CYS or Wa arrow keys to move the cursor to the corresponding parameter field for editing 3 Ifthe parameter is a numeric value use the numeric keypad to enter the desired value followed by unit selection using the option softkeys Us 13 50 uF t D 0 189 EN FREQ D RANGE AUTO SPEED FAST Figure 3 4 Digit Selection Entry A 4 Or use th
44. ment identification lt Manufacturer gt lt model gt lt serial number gt lt firmware type and version gt RCL lt NR1 gt Recall setting from memory SAV lt NR1 gt Save setting to memory 6 5 SCPI Command Subsystem Subsystem commands are specific to functions They can be a single command or a group of commands The groups are comprised of commands that extend one or more levels below the root The subsystem commands are arranged alphabetically according to the function they perform The following table lists the common SCPI subsystem commands supported Table 6 4 SCPI Command Subsystem Command Description CALibrate Calibrate subsystem BUSY Return calibration status lt NR1 gt O done 1 busy 1 fail OPEN Execute open calibration SHORt Execute short calibration BIN ABSolute COMParator BIN 1 9 lt BOOL gt SECondary lt BOOL gt COUNt CLEar DATA LIMit BIN 1 9 lt NRf NR gt SECondary lt NRf NRf gt BEEPer lt OFF O PASS 1 FAIL 2 gt DISPlay MODE lt BIN O TABle 1 HiSTogram 2 gt DIN lt CSQ O CSD 1 CSR 2 CPQ 3 CPD 4 CPR 5 CPG 6 LSQ 7 LSD 8 LSR 9 LPQ 10 LPD 11 LPR 12 LPG 13 ZTH 14 YTH 15 RX 16 GB 17 DCR 18 gt BIN subsystem Absolute mode Set or return the bin 1 9 comparator on or off switch Set or return the secondary bin comparator on or off Clear bin counts Re
45. nstrument comes with USB virtual COM GPIB and LAN interfaces for remote control This chapter will describe how users can remotely operate the instrument and use SCPI Standard Commands for Programmable Instruments commands over any one of these remote interfaces NOTE The green RMT indicator will appear on the lower right of the display when the LCR meter is successfully connected to a PC remotely through any remote interface Keys on the front panel will be locked until the instrument is in LOCAL mode To return to LOCAL mode from the front panel press the key The RMT indicator will disappear when the instrument is in LOCAL mode 6 1 Interface Configuration USB Virtual COM The standard USB port is a virtual COM port that can be used for remote communication There are no settings in the menu system for USB configuration The serial settings are listed below Parameter Description Baud rate 9600 19200 38400 57600 Parity end None 8 bits Even 8 bits Odd 8 bits data bit Flow control None 59 The USB interface does not support hardware flow control only transmit receive and ground pins are used The programmer should be aware of this limitation and notice the command process time of the LCR meter If the remote commands are sent too fast to the LCR meter the internal buffer may overrun and cause a communication error Therefore adding a delay between commands is necessary to allow time for the meter to proc
46. olor LCD Display Window USB Host Port 1 4 Keypad Overview Figure 1 2 Main Keypad Overview Main Keypad Description H k gt S Local Switch to local operation Recall Recall the configuration from internal memory or external USB flash Save Save the configuration screen and result to internal memory or external USB flash Up Moves the cursor up Down Moves the cursor down Left Moves the cursor left Right Moves the cursor right Decimal Decimal point during numeric entry Sign Plus or minus sign during a numeric entry 4 HEAS FUNC BIN SHEEP DISP SYSTEM HLZRDCR TOL ABS LIN LDG CEN LARGE Figure 1 3 Menu Keypad Overview Menu Keypad Description MEAS FUNC BIN SWEEP DISP SYSTEM Measurement function selection of C L Z R and DCR Bin comparator measurement of tolerance mode and absolute mode Frequency sweep measurement Display option configuration System settings menu 1 5 Rear Panel Overview gt gt AC INPUT VOLTAGE Vi FUSE AC INPUT Figure 1 4 Rear Panel Overview Rear Panel Description Power On Off Switch Menu Keys Measurement Terminal Save Recall Keys Numeric Keypad Arrow Keys Gelee Tee Local Key 1 6 Display Overview C Us 13 49 aR D 0 190 Tr 1 000kHz LEVEL 1 YRHS AUTO SPEED FAST a HEAS FUNC BIN SHEEP DISP oTSTEM RL RDCR TOL ABS LIN LOG LM LARGE V Figure 1 5 Display Overview Display Des
47. on Table 5 1 Save Recall Parameters Measurement state of single measurement bin function or sweep function Bin comparator on off switch of bin 1 9 and secondary tolerance mode bin in absolute mode absolute mode 51 The file name of the measurement configuration is 891CFGxx CFG where the xx represents the location 00 to 99 in internal non volatile memory or external USB flash drive The number 00 to 09 is designated to be the internal non volatile memory and the number 10 to 99 is in the external USB flash drive Save a Measurement Configuration To save the measurement configuration press the key first and then press the SAVE CONFIG softkey option to show the save configuration pop up window 52 Cs 13 48 uF Indicates internal ae CONF IGURAT ION memory or Itename external USB 891CFG CFG flash drive Use n merical key to edit HEAS FUNC BIN SHEEP DISP SYSTEM HL Z DCR TOL ABS LIN LOG Cm LARGE Filename to be saved Figure 5 3 Save Configuration Pop Up Window Use the numeric keypad to edit the desired location from 00 to 99 in the memory from 00 to 09 Press SAVE softkey option to execute the save function or press ABORT to close the save configuration pop up window The 891CFGxx CFG File Saved message will be displayed on the screen if saved successfully a message will pop up as shown below Cs 13 51 uF Poma D 0 196 a RANGE AUTO SPEED FAST FREQ 1 000kHz LEYEL 1 RHS
48. orm daily operations in production quality control and laboratory environments Features e Best accuracy 0 05 e Test frequency from 20 Hz to 300 kHz e Frequency sweep function e Bin sorting comparator e Adjustable measurement speed for fast readout or better accuracy e Standard USB GPIB and Ethernet interface e Save and recall up to 10 internal measurement setups e 4 3 color TFT LCD with 480 x 272 pixels 1 2 Package Contents Please inspect the instrument mechanically and electrically upon receiving it Unpack all items from the shipping carton and check for any obvious signs of physical damage that may have occurred during transportation Report any damage to the shipping agent immediately Save the original packing carton for possible future reshipment Every instrument is shipped with the 1 following contents e 1x Model 891 bench LCR meter e 1x User Manual e 1x AC power cord e 1 x 4 wire Kelvin clip test lead e 1x Certificate of calibration e 1x Test report Verify that all items above are included in the shipping container If anything is missing please contact B amp K Precision 1 3 Front Panel Overview Cs 13 49 ur A a 000 gt oo 50500 oo oe ee PO Figure 1 1 Front Panel Overview Front Panel Description GG Power On Off Switch Menu Keys Measurement Terminal Save Recall Keys Numeric Keypad Arrow Keys Local Key Softkeys 4 3 TFT C
49. pecify the measurement speed DCR mode only Measurement Display The number of digits of the primary and secondary measurement value can be changed from 2 to 4 digits Also the display notation of decimal or scientific can be selected as well The large display enhances the readability of the measurement The following table shows display options for the measurement function Table 3 6 Measurement Display Options Parameter Description Input NOTATION Specify the numerical notation Decimal Scientific PRI DIG specify the number of digits to display for primary measurement Specify the number of digits to displa SEC DIG II 5 p ay 2 3 4 for the secondary measurement DISP When selected all measurement NORM parameters will be displayed on screen DISP When selected only the primary and LARGE secondary measurements will be displayed in a larger font The following steps walk through how to configure the measurement display options 1 Press the DISP function key to open the display softkey options 24 Cs 13 52 uF sr D 0 19 an SEC DIG FREQ 1 000kHz LEYEL 1 RHS 230 RANGE AUTO SPEED FAST Use arrow key to edit MEAS FUNC BIN SWEEP DISP SYSTEM HL ZRDCR TOL ABS LIN LOG COMM LARGE Figure 3 11 Display Function Options 2 Press the softkey options PRI DIG or SEC DIG to select the number of digits to be displayed for the primary or secondary measurements Cs 14 uF ees D 0 197 Ce
50. ple Frequency 500 Hz Level 1 VRMS Measured Lx Value 100 uH Step 1 Find Lae Refer to Measurement Accuracy Chart Lae Zae 1 Step 2 Find Oae x Zae x 0 01 0 573 Note If calculated Oae lt 0 1 ae 0 1 81 100 M NN a ZS DES NA EIA LEA DORIA GAR EAN IZAN ma epes DIR Gab 10 M 1M S G A 100 k gee NS ve ONE SE Ze sas Ze RZ SEAS E o pi A A Ss ER Sa ae E ao OSO D SESSA ae Ee PST RN AARS DAA eee 10 k 1k ZI 9 a 07 Ch E NINY a e X N E K K kx gt aN a SO PAAR LASER NTL 100 SS Se AON a ils Gees S SALIA N N 3 d Le Ne p PERS F e d KL ES A EE S a a 34 2 se E i E S A V d SCH Y ne L D a 10 100 m SS is WW AS 10 m e SK AXA Figure 8 1 Measurement Accuracy Chart Save Recall Instrument Setting number 00 09 at internal storage Locations number 10 99 at external USB storage Measurement result and screenshot oca number 000 009 at internal storage number 010 999 at external USB storage General AC Input 104 V 126 V 50 60 Hz TT E EE le 0 C to 40 C Temperature To ensure the most current version of this manual please download the latest version here bkprecision com search 891 For current up to date product information please visit bkprecision com 83 SERVICE INFORMATION Warranty Service Please go to the support and service section on our w
51. replaced make sure the AC input power cord is disconnected from the instrument before replacing Refer to the table below for the fuse requirements with either 115 VAC or 230 VAC Before replacing fuse disconnect AC input power cord first A to prevent electric shock Only use same rating of the fuse Using a different rated fuse may damage the instrument Table 2 1 Fuse Requirements Fuse Specification 115 V Fuse Specification 230 V T1A 250V T 500 mA 250 V Fuse Replacement Follow the steps below to replace or check the fuse 1 Locate the fuse box in the rear panel of the instrument next to the AC input receptacle 2 Use a flat blade screwdriver and turn the fuse capsule counter clockwise There is an internal spring that will push it out after turning 3 Pull out the glass tube fuse inside to check and replace as necessary 4 Insert the fuse capsule in the same location and use the flat blade screwdriver to turn clockwise 9 5 The fuse capsule will now be locked and secured 2 2 Preliminary Check Complete the following steps to verify that the generator is ready for use 1 Verify AC Input Voltage Verify and check to make sure proper AC voltages are available to power the instrument The AC voltage range must meet the acceptable specification as explained in section 2 1 2 Connect Power Connect AC power cord to the AC receptacle in the rear panel and press the power switch to the ON position to turn
52. requency 20 Hz to 300 kHz 0 0 5 VRMS 1 LEVEL Specify the test signal level VRMS 1 VDC RANGE Specify the measurement range control AUTO HOLD SPEED Specify the measurement speed SLOW FAST SWAP Specify primary or secondary PRI SEC measurement Tolerance mode only DCR measurement only To perform the bin function press the BIN function key to enter the bin softkey menu The default mode is tolerance mode 32 FUNC Cs D FREQ 10 00KHz RANGE AUTO Cerpt NOM 95 00nF LEVEL 1 VRMS SPEED FAST Cs 94 61 nF D 0 079 BEEP OFF GEES FAIL TOL 0 409 B N SWAP CLEAR TOTAL CNT 0 Use arrow key to edit MEAS FUNC BIN SHEEP DISP SYSTEM CLZRDCR OI LIN LOG D TEL HIST Figure 3 23 Bin Mode View Tolerance Mode Press the BIN function key again to switch between tolerance and absolute mode FUNC Cs D FREQ 10 00KHz RANGE AUTO ayApy LEVEL 1 VRMS SPEED SLOW Cs 94 55 nF D 0 079 BEEP OFF GEES FAIL B l N SWAP CLEAR TOTAL CNT 0 Use arrow key to edit HEAS FUNC BIN SHEEP DISP SYSTEM C L Z R DCR TOL ABS LIH LOG GIC TEL HIST Figure 3 24 Bin Mode View Absolute Mode Press the arrow keys to select the test parameters and use the option softkeys to edit and set them 33 FUNC Cs D FREQ 00KH2 RANGE AUTO LEYEL 1 YRMS SPEED SLOW INC Cs 94 43 nF D 0 083 BIN TOTAL CNT DEC Figure 3 25 Bin Parameter Edit To edit the high low limits values and comparator ON OFF for each bin pre
53. se circuit models are mathematically equivalent The LCR meter measures an impedance which gives two independent numbers the magnitude Z and phase 0 of the impedance These are changed into rectangular components R and X giving the real and imaginary part of the impedance These rectangular components can then be transformed into either a series or parallel circuit of a pure resistance and pure reactance These transformed circuits have exactly the same impedance as the measured value only at the measured frequency Choosing a Test Frequency Test frequency can greatly affect the results of measurement reading especially when measuring inductors and capacitors This section provides some recommendations and suggestions to consider Capacitance When measuring capacitance selecting the right frequency is important in obtaining the most accurate measurement results Generally a 1 kHz and 17 above test frequency is used to measure capacitors that are 0 01 uF or smaller For capacitors that are 10 uF or larger a frequency of 1 kHz or lower can be used Following this trend high test frequencies are best for testing very low capacitance components For large capacitance components low frequency would be optimal For example if the capacitance of the component is to be in the mF range then selecting in the range of 20 Hz to 200 Hz for test frequency would give much better results The results will also be obvious because if the sam
54. ss DISP key to enter the table display Use arrow key to activate the cursor and edit the corresponding values FUNC Cs D FREQ 10 00KHz RANGE AUTO LEVEL 1 YRS SPEED SLOW ON OFF LOW LWT HIGH LMT ON 43 00uF 43 50uF but 44_00uF O0uF 44_50uF 50uF 45 00uF 00uF 45 50uF 50uF 46 00uF O0uF 46 50uF LU KS m e 0 0 0 0 0 0 0 0 0 0 0 Figure 3 26 Bin Enable Disable To start the bin comparator function do the following steps 1 Select the desired beep function by press the BEEP softkey 2 The SWAP softkey will swap the primary and secondary measurement to be the main bin comparison 3 Press the START softkey to start the bin comparison 34 4 Connect the component under test to the test leads or insert it into the test fixture 5 Press the TRIG key to perform a bin comparison and log the corresponding bin count result Remove the device under test from the test leads or test fixture Repeat steps 1 3 for more components to be tested Press the STOP softkey to stop the bin comparison Use the CLEAR softkey to clear the bin count results ee ae NOTE You may save the bin comparison test results to an external USB flash drive To do so please refer to the Save a Measurement Result section 3 6 Sweep Function The sweep function scans the frequency over the component under test It shows a full spectrum of the component characteristics in a very easy to operate me
55. t SPEEd lt SLOW 1 FAST 2 gt RECall CONFiguration lt NR1 gt SWEEp BUSY POInt lt NR1 gt DATA ALL MODE lt LINear O LOGarithm 1 gt DISPlay Set or return the measurement range control Return the measured raw data primary lt NRf gt and secondary lt NRf gt reading Set or return the measurement speed Recall subsystem Recall configuration parameters from internal memory CFGOO CFG CFGO9 CFG or external USB flash disk CFG10 CFG CFG99 CFG Sweep subsystem Queries the status of sweep Set or return the sweep point n to be returned the result of SWEEp DATA command Return sweep test results of the frequency lt NRf gt and data lt NRf gt of point n Return sweep test results 300 points This command is not supported via GPIB and LAN interface due to buffer size limit Set or return the sweep mode 71 LIMit lt NRf NRF gt MODE lt GRAPh O TABLe 1 gt LINear GRAPh lt CSQ 0 CSD 1 CSR 2 CPQ 3 CPD 4 CPR 5 CPG 6 LSQ 7 LSD 8 LSR 9 LPQ 10 LPD 11 LPR 12 LPG 13 ZTH 14 YTH 15 RX 16 GB 17 gt TABle lt CSQ O CSD 1 CSR 2 CPQ 3 CPD 4 CPR 5 CPG 6 LSQ 7 LSD 8 LSR 9 LPQ 10 LPD 11 LPR 12 LPG 13 ZTH 14 YTH 15 RX 16 GB 17 gt LOGarithm GRAPh lt CSQ O CSD 1 CSR 2 CPQ 3 CPD 4 CPR 5 CPG 6 LSQ 7 LSD 8 LSR 9 LPQ 10 LPD 11 LPR 12 LPG 13 Z
56. t Cs D 10 Q0KHz AUTO START Parameters 94 00nF 1 YRMS FAST Measured Cs 94 54 nF D 0 079 BEEP PASSE A TE SC TOL 0 581 2 SHAP Sorted Bin H N CLEAR Total Count TOTAL CNT HEAS FUNC BIN SWEEP DISP SYSTEM A A T OL ABS LIM LOG CJC TRL HIST Figure 3 20 Bin Main Display Table Display The table display shows the overall result of the bin function It shows the result the comparator enable switch and high low limit values of each bin The comparator setting can be accessed in this display screen 30 Measurement sl J UUKHZ AL START Parameters LK YRM F 1 E E Sorted Bin 0 A z BEEP Results 0 Z A A DFF ES FAIL 0 y y SWAF ie 0 y oo 2 CLEAR 0 0 MEAS FUNC B SHEEP DISP SYSTEM C A TO LIM LOG BINH HIST Bin Limits Table Display Indicator Figure 3 21 Bin Table Display Histogram Display The screen shows the histogram chart of the bin function result Measurement K STOP Parameters Histogram BEEF Chart USDA SCHIER Bac MEAS FUNC BIN SMEEP DISP SYSTEM A A T OL ABS LIM LOG BIW A TEST Histogram Display Indicator Figure 3 22 Bin Histogram Display 31 Configure Bin Function The following table shows the different parameters that can be configured in the Bin function Table 3 7 Bin Parameter Options Parameter Description Input FUNC Specify the measurement type All combinations Valid t Specify the nominal component value FREQ Specify the test signal f
57. t to be tested which defines the voltage impulses expected and required insulation clearances These categories are Category CAT I Measurement instruments whose measurement inputs are not intended to be connected to the mains supply The voltages in the environment are typically derived from a limited energy transformer or a i battery Category II CAT Il Measurement instruments whose measurement inputs are meant to be connected to the mains supply at a standard wall outlet or similar sources Example measurement environments are portable tools and household appliances Category III CAT Ill Measurement instruments whose measurement inputs are meant to be connected to the mains installation of a building Examples are measurements inside a building s circuit breaker panel or the wiring of permanently installed motors Category IV CAT IV Measurement instruments whose measurement inputs are meant to be connected to the primary power entering a building or other outdoor wiring 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 Electrical Power This instrument is int
58. thod It can also sweep the frequency linearly or logarithmically to provide better understanding of the component Users can also view data either by a graph or by a table and obtain up to 300 points in one sweep Linear Sweep Mode In linear sweep mode the unit will sweep the frequency linearly from start frequency to stop frequency The following will be displayed for the GRAPH display 35 FUNC Cp D START AUTOFREQ HI AUTOSCALE START LEVEL 0 5YRMS STOP AUTOFREQ LO AUTOSCALE C FREQ STEP 5 SWAF AUTOSCALE M OFF be FREQ M OFF 100 0k 200 0k HEAS FUNC BIN SWEEP DISP SYSTEM H r A L ABS LIN LOG GRAPHS LR Figure 3 27 Sweep Linear Display Logarithmic Sweep Mode In logarithmic sweep mode it will sweep the frequency logarithmically from start frequency to stop frequency The following will be displayed for the GRAPH display FUNC Cp D START AUTOFREQ HI AUTOSCALE START LEVEL 0 5YRHS STOP AUTOFREQ LO AUTOSCALE C FREQ STEP 5 MAP AUTOSCALE m OFF HI II RE M OFF 100 Ik 10k 100k HEAS FUNC BIN SWEEP DISP SYSTEM CL Z RDR TOL ABS LIN GRAPHES j E Figure 3 28 Sweep Logarithmic Display Table Display The table display shows the overall result of the linear or logarithmic sweep It shows the step number frequency and component value in a table form 36 Using the PG UP or PG DN softkey options will scroll the table up or down Up to 300 points depending on sweep settings can
59. tively proportional Therefore the larger capacitance means the lower impedance the smaller capacitance reverts to higher impedance Figure 3 8 shows the equivalent circuit of capacitor If the capacitance is small the parallel resistance Rp becomes large and more relevant than the series resistance Rs If the capacitance is large the series resistance becomes dominant and the parallel resistance becomes insignificant Hence it is proper to use the parallel model for low capacitance measurement and series model for high capacitance measurement Small Capacitor Large Capacitor High Z Low Z C Rp C Rp Relevant Less relevant Rs Rs Less relevant Relevant Figure 3 8 Equivalent Capacitor Circuit Inductance The impedance of an inductor is positively proportional Therefore the larger inductances equals to higher impedance and vice versa Figure 3 9 shows the equivalent circuit of an inductor When the inductance is small the series resistance Rs becomes more important than the parallel resistance Rp When the inductance is large the parallel resistance should be taken into consideration Therefore it is recommended to use the series model to measure an inductor with low inductance and parallel model to measure an inductor with high inductance 19 Large Inductor Small Inductor High Z Low Z L Rp L Rp Relevant Less Relevant Rs Rs Less Relevant Relevant Figure 3 9 Equivalent Inductor Circuit What is consider
60. turn the bin counts of bin 1 lt NR1 gt bin 2 lt NR1 gt bin 9 lt NR1 gt out of specification bin lt NR1 gt and secondary bin lt NR1 gt Set or return the limit value of the bin 1 9 lt NRf NRf gt lt low high gt Set or return the limit value of secondary bin lt NRf NRf gt lt low high gt Set or return the beeper in bin test Set or return display mode of bin test Set or return function in BIN display mode 68 TABle lt CSQ O CSD 1 CSR 2 CPQ 3 CPD 4 CPR 5 CPG 6 LSQ 7 LSD 8 LSR 9 LPQ 10 LPD 11 LPR 12 LPG 13 ZTH 14 YTH 15 Set or return function in BIN table display mode RX 16 GB 17 DCR 18 gt HISTogram lt CSQ O CSD 1 CSR 2 CPQ 3 CPD 4 CPR 5 CPG 6 LSQ 7 LSD 8 LSR 9 LPQ 10 LPD 11 LPR 12 LPG 13 ZTH 14 YTH 15 RX 16 GB 17 DCR 18 gt MODE lt ABSolute O TOLerance 1 gt STARt lt BOOL gt SWAP lt BOOL gt TOLerance COMParator BIN 1 9 lt BOOL gt SECondary lt BOOL gt COUNt CLEar Set or return function in BIN histogram display mode Set or return the bin count mode Set or return the BIN start running status Set or return the BIN primary and secondary swap parameter Set or return the bin 1 9 comparator on or off Set or return the secondary bin comparator on or off Clear bin counts 69 Return the bin counts of bin 1 lt NR1 gt bin 2 lt
61. ually enter the IP Address Subnet Mask and Gateway of the instrument If MANU is selected press the down arrow key to highlight the IP Address parameter and enter using the numeric keypad i e IP Address 192 168 100 55 Repeat step 3 for the Subnet Mask and Gateway parameters Press ESC to exit editing parameters Web Server There is an embedded web server GUI that can access the LCR meter via LAN interface using a web browser The GUI provides a simple way of setting measurement parameters sending SCPI commands making measurements as well as viewing system information using a web browser from a computer connected to the same local area network as the instrument To access this perform the following steps Open up a web browser on the computer 2 Check the IP address of the LCR meter by pressing the SYSTEM function key and the SYSTEM INFO key 61 CLEAR Hode 891 Se serial Number LCR89177416699 Yersion 1 22 1 07 1 03B RIC Battery 3 15 Front USB ID YID 058Fh PID 6387h Product Mass Storage PIB Address WAC Address 00 17 F8 00 FF 03 SYSTEM SYSTEM COMM CAL EXIT INFO SE TUP SETUP Current IP Address Figure 6 1 Current IP Address Type the IP address of the LCR meter in the URL bar of your browser with http prefix i e http 192 168 1 55 for IP Address 192 168 1 55 If correctly configured the following screen will be shown LCR Meter Web Login Page Please enter password to continue PA
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