LCR-819 User Manual
Contents
1. AO Per doc 51600 EH Mir BRAY 0122 3 Figure 8 7 Set Filename This filename setting is the route for saving test result Driver Set driver Directory Set directory File Name Set file name with 4 letters or 4 numbers 43 LCR 819 User Manual File Num Set 4 digits of file number from 0001 to 9999 When the recorded test results data reaches 10000 readings it can be stored with a file number Test Result File Name File Num Filename 1 10000 LCR 0001 LCR_0001 Txt 10001 20000 LCR 0002 LCR 0002 Txt 20001 30000 LCR 0003 LCR 0003 Txt 30001 40000 LCR 0004 LCR 0004 Txt 40001 50000 LCR 0005 0005 Txt 50001 60000 LCR 0006 LCR 0006 Txt 99980001 99990000 LCR 9999 LCR 9999 Txt FileNum Reset refer to the following figure File Num is 0001 Ps File Num will continue from last file number of test results If last file number ends at 0006 the next file number is starts from 0007 when power is next applied to the instrument To start from 0001 reset the FileNum refer to Figure 8 8 Figure 8 8 44 4 LCR 819 User Manual 4 Data Result Display test results When the test results count reaches 10 000 it will be stored in a file automatically If you want to store less than 10 000 results you must exit the LCR VIEW first the data will be stored automati2. circuit The component value of the Primary Display depends on which equivalent circuit series or parallel is chosen The component manufacturer will normally specify how a component is to be measured usually series and at what frequency Suggested Test Conditions Inductors less than 10uH Series 100kHz Inductors from 10 uH to 1mH Series 10kHz Inductors from 1 mH to Series 1kHz Inductors greater than 1H Series 0 1kHz Capacitors less than 10pF Parallel 100kHz Capacitors from 10 to 400pF Series or Parallel 10kHz Capacitors from 400 to 1uF Series 1kHz Capacitors greater than 1 uF Series 0 1 or 0 12kHz Resistor less than IKO Series 1kHz Resistor from 1kQ to 10 Parallel 0 25kHz Resistor greater than 10 MQ Parallel 0 03kHz Unless for particular reason always select Series for capacitors and inductors This has traditionally been standard practice For very small capacitance or inductance select a higher test frequency for greater accuracy For very large capacitance or inductance select a lower test frequency For dc resistance select the lowest test frequency to minimize a c effects Because the reactive component most likely to be represented in a low resistance resistor is series inductance the Series setting is selected for a resistor below about 1kQ If the resistor is larger than 10 select Parallel because the reactive component most likely to be represented in a
3. Do not spray cleaner directly onto the instrument since it may leak into the cabinet and cause damage Do not use chemicals containing benzine benzene xylene acetone toluene or similar solvents Do not use abrasive cleaners on any portion of the equipment 7 2 Battery Replacement A replaceable 3V lithium battery type BR 2 3A supplies the backup power for the non volatile memory for the instrument This battery has an expected life of approximately 3 years replaced Replace only with the same or equivalent type Discard used batteries according to the manufacturer s instructions and CAUTION Danger of explosion if battery is incorrectly local environmental regulations LCR 819 User Manual 8 RS 232 OPTION 8 1 On line Procedure 1 2 3 4 Apply power to the instrument and switch it on Enable the RS232 function of the instrument as follows Figure 8 1 Press U key Press F2 key to select SORT function Press 3 Press E AH Run the PC LCR VIEW Program Check the contents of the Message area under the LCR VIEW to ensure the connection has been successful If not select the setting items above the LCR VIEW to change the Com serial port and attempt connection again until communication is established Refer to Figure 8 2 8 3 8 4 C 13 450uF SLOW D 1652 VALUE C D CIRCUIT Press menu F 1 0000 kHz R H OFF SERIES V 1 000 V C V OFF pue
4. FileNum Reset Yes Coml BaudRate 38 4 k Filename of test result amil amp A0 51600 MH itj ADU PM022 Figure 8 4 5 When connection is successfully established RS232 ONLINE will appear on the instruments LCD screen Figure 8 5 RS232 ONLINE LCR 819 User Manual 8 2 RS232 VIEW Software Operation 1 File Press Exit Figure 8 6 or press Power to leave the program 42 LCR 819 User Manual 2 Option Settings Port There are three Ports available for selection Com1 Com2 and Com3 The default value is Coml Baudrate There are five Baud rates available for selection 9600 19200 38400 57600 and 115200 The default value is 38400 Digital Word Format 8 Data bits no parity 1 stop bit These settings cannot be altered Figure 8 7 Option Data Help Port Baudrate DataBits StopBits HUE COMI C 9600 7 BIT3 1BIT C COM2 19200 8 BITS 2 BITS C COM3 38400 C 2 0 C 57600 Flowcontrol None 0 C 115200 Es Xon Xoff Ae Even RTS CTS Odd F 0 10000 1 0500 AUTO M Set Filename Directory CAPROGRA INATE LCRVIEW j c htc 1 E g PROGRA 1 ATE File Name File Num Online LeR 0014 LCR 0014T FileNum Reset Comi BaudRate 38 4 k Yes Filename of test result
5. MANU OFF TESTING CAP C D OFFSET OFFSET Press F2 key to the sort menu SET SORT SORT SET PARAMETER SETTING CALIBRATION CALBRAT LCR 819 User Manual RS232 INTERFACE ON Press F1 key to the RS232 ON Figure 8 1 File Option Data Help 2001 9 26 01 19 32 SPEED MEDI C 207 01 uF D 0416 0 10000 kHz RH OFF V 0 500 v OFF PARALL AUTO INTB E Instek LCR METER LCR 819 gt LENE por EB sss Message Area sm E BaudRate 38 4 ame of test result CAPROGRA IVATENLCRVIEWALCR 0014 Txt miata cz or Giese Microsft 511800 POL SPEED MEDI C 207 01 uk D 0416 CD F 0 10000 kHz RH OFF 0 500 V OFF PARALL B AUTO INTB OFF MENU F5 POWER al Bo E LCR 819 Lu Ee EN a LCR 819 User Manual Figure 8 3 File Option Data Help EN Port Baudrate DataBits StopBits penes COMI C 9600 7 BITS 1BIT C C 19200 6 8BITS 2BITS 38400 C 20 C 57600 Fer Flowcontrol None ID C 115200 t D 0 Even Odd F 0 10000 1 0 500 Set Filename Directory CAPROGRA 1 ATE LCRVIEW POWER e htc 1 x CE E PROGRAMI z e o ATE File Name File Num LCR 0014 Trt
6. of the readings will be calculated by the instrument and displayed on the LCD screen The Programme of QUEE is as follows Figure 4 11 After ie BAR at the bottom of LCD monitor is filled the Averaging input is complete 24 LCR 819 User Manual 1 23459 0 6789 MEE TESTING 1 9 Press menu key 1 000 kHz R H OFF SERIES V 1 000 V C V OFF MANU INT B OFF CAP R L OFFSET OFFSET SET SORT SORT Press F3 key SET PARAMETER SETTING to the setting menu CALIBRATION CALBRAT MOMORY NO VOLTAGE AVERAGE Press F3 key to input the desired averaging amount Figure 4 11 Programming of averaging 25 LCR 819 User Manual 4 5 8 Memory The instrument has two memory functions Store and Recall The current measurement conditions can be saved into the memory or a previously saved configuration may be recalled There are 100 memory blocks in total The programming of Memory Store Recall can be performed as described below Press compound 5 to store the current measurement conditions into memory e dn the number of desired memory block 1 100 e After the BAR at the bottom of the LCD screen 1s filled the process of Memory Store Recall is complete 26 LCR 819 User Manual L 1 2345 A Q 0 6789 TESTING 1 9 Press menu 1 000 kHz OFF SERIES k ey 1 000 V C V OFF POM MANU INT B OFF CAP R
7. 99 9999 s series p parallel ESR Rs with R withLorR with C 29 LCR 819 User Manual Equivalent Series Resistance ESR 0 00010 9999 k Equivalent Parallel Resistance EPR 0 00010 9999 k Dissipation factor D in ppm ppm 9999 ppm Quality factor in ppm ppm 9999 ppm DELTA 0 00001 99999 If any of these quantities is negative the negative indicator is displayed R L C 0 05 Basic D Q 0 0005 Basic There are 503 test frequencies between 12Hz and 100kHz which may be selected using the keypad M um The measured results can be shown on the LCD screen in four ways The measured quantities of R Q C D C R or L Q 1 The resolution of the primary display L C or R is five digits The resolution of the secondary display D Q or R with C is four digits Please refer to page41 43 for details 30 LCR 819 User Manual The LCR difference is similar to the DELTA except that the 2 deviation is shown in suitable units ohms henries etc The DELTA shows the percent deviation of the measured L 3 DELTA C or value from a saved NOMINAL VALUE The sign of deviation is indicated SLOW 896ms MEDI 286ms FAST 135ms The L C or R equivalent SERIES or PARALLEL circuit can be selected by the keypad Two modes are available AUTO and MANUAL AUTO mode is measuring continuously updati
8. EFORE OPERATION 2 1 Unpacking the instrument This instrument has been thoroughly inspected and tested before shipment from the factory Upon receiving the instrument please unpack and inspect it for any damage caused during transportation If any damage is found notify the bearer and or RS Components Ltd immediately 2 2 Checking the Line Voltage The LCR Meter can be operated with a power source between 100 and 240 Volts a c with a frequency of 50 60Hz no voltage selection is necessary Power connection to the rear panel is through an a c inlet module comprising of an a c connector and fuse holder To change the fuse proceed as follows WARNING To avoid personal injury disconnect the power cord before removing the fuse holder e Remove the fuse holder by inserting a small flat blade screwdriver behind the small tab to force the holder outward e Install the correct fuse slow blow 250Vac e Re install the fuse holder back into the LCR Meters AC inlet module push in and lock LCR 819 User Manual 2 3 Environment The normal operating ambient temperature range of the instrument is from 10 to 50 C Operating the instrument outside this temperature range may cause damage to the internal circuitry and will invalidate the warranty Do not use the instrument in the presence of strong magnetic or electric field as they may disturb the measurement and give erroneous readings 2 4 Equipment Installation and Operati
9. FAST Q 0 6789 MODE acm CIRCUIT 1 000 kHz OFF SERIES 1 000 V C V OFF PULS MANU INT B OFF MENU Figure 4 7 Selection of measurement speeds 4 5 Measurement Conditions 4 5 1 Bias Voltage There are two available bias voltage modes Internal and External Internal An internal 2 volts d c bias voltage will be applied to the device under test External An external DC bias voltage between 0 and 30 volts can be applied to the device under test The external bias connection is located on the rear panel The maximum current is 200mA The supply of the bias voltage must be fully floating with no connection to ground Allow approximately 1 second between initiating a test and taking the reading This will ensure the device under test has stabilized and give a more accurate reading The DC bias voltage should generally only be applied to capacitors If the DC bias voltage is applied to device of low impedance the unreliable test results will occur 18 LCR 819 User Manual Press the numerical 7 key Press the numerical 8 key to to select either internal or turn either internal or external external bias voltage bias voltage on or off L 1 2345g EE Q 0 6789 MODE CIRCUIT F 1 000 kHz R H OFF 1 000 V C V OFF PY MANU OFF KENG Indication of ntemalor ex temal bias voltage Figure 4 8 Selection of BIAS voltage I9 LCR 819 User Manual
10. L OFFSET orvser SET SORT SORT Press F3 key SET PARAMETER SETTING to the setting menu CALIBRATION carrar MOMORY NO MOMOIUE Press F1 key to select the memory VOLTAGE store recall function AVERAGE Figure 4 12 Programming of memory store recall 24 LCR 819 User Manual Press compound key 1 to Press compound key 2 to select the memory recall select the memory store function function 1 RECALL 2 STORE nera VOLTAGE 1 000 V AVERAGE 1 Input number of desired memory block for memory recall function RECALL NO MOMORY 7 VOLTAGE VOLT 1 000 AVERAGE AVGE Input number of desired memory block for memory store function STORE NO MOMORY VOLTAGE AVERAGE au Figure 4 12 Programming of memory store recall Cont 28 LCR 819 User Manual 5 SPECIFICATIONS Inductance L L Capacitance C C Resistance R R Dissipation D Quality Factors Q Equivalent Series Resistance ESR and Equivalent Parallel Resistance EPR Four kinds of measurement model can be selected Two measurement parameters measured and displayed simultaneously R Q C D C R L Q Primary Display Inductance L Capacitance C Resistance R Secondary Display Dissipation factor D Quality factor Q 0 0000 1mH 0 00001pF 0 000010 0 0001 0 0001 N 99999H 99999 y F 99999kQ 99
11. LCR 819 User Manual CONTENTS PAGE 1 AZINTRODUCTION 5 iiic er etr terruit 1 2 PRECAUTIONS BEFORE OPERATION 2 2 1 Unpacking the instrument eee eene ene 2 2 2 Checking the Line Voltage 2 2 3 Environmental Considerations 3 2 4 Equipment Installation and Operation 3 3 CONTROL PANEL 4 DESCRIPTION 4 OPERATION 8 4 1 Connections to Device Under Test 8 2 96 Si 8 ERE IINE 8 4 4 Menu Functions 11 4 5 Measurement Conditions 18 5 COSPECIFICA TIONS 29 6 MESSAGE CODES 36 7 MAINTENANCE 37 p NO ILC 37 7 2 Battery replacement eee 37 S JRS732 OPTION 38 8 1 On line 38 Red xu bod 42 8 2 RS232 VIEW Software Operation 47 8 3 Data Cable Configuration LCR 819 User Manual SAFETY TERMS AND SYMBOLS The following symbols may appear in this manual or on the instrument WARNING Warning statements identify condition o
12. Lmax 4100mH f 36 LCR 819 User Manual 6 MESSAGE CODES This section describes the message codes which may be displayed on the LCD screen Cause 1 If the impedance of Device under test is smaller than the selected measurement range of the instrument the OVER 01 message will be displayed on the LCD screen Calculation formula Capacitance XC 1 2 zfC Inductance XL 2 z fL where f test frequency in Hz If the inductor of Device under test is very large at a very high test frequency the Resonance effect will occur and the impedance will decrease Hence the measured value is useless Meanwhile an OVER 01 message will be displayed on the LCD screen Solution 1 2 Turn on the Constant Voltage mode please refer to 4 5 5 Constant Voltage Source page 22 for details Select a lower measurement range Refer to table B 1 Range Hold page 41 in order to reach an appropriate measurement range Turn on the Range Hold mode after the measurement range is set Note Both solutions will reduce the accuracy of the instrument 37 LCR 819 User Manual 7 MAINTENANCE This section includes the basic maintenance information for the instrument 7 1 Cleaning Remove the AC input power disconnect and remove the power cord from the instrument before attempting to clean it To clean the instrument use soft cloth dampened in a solution of mild detergent and water
13. Steps for BIAS voltage selection Figure 4 8 e Press compound key 7 to selects the INTERNAL BIAS or EXTERNAL BIAS on the main menu If this key function is switched to INTERNAL BIAS the bottom of LCD screen will display the INT B message If the external DC bias is selected the bottom of LCD screen will display the EXT B message e Press compound key to turn either INTERNAL BIAS or EXTERNAL BIAS mode ON or OFF on the main menu 4 5 2 Test Frequency The numerical input of test frequency accepts up to 5 digits with decimal point User can input any desired frequencies however the actual frequency executed for the LCR Meters is always the closest one of the 503 available frequencies The 503 frequencies can be calculated by the following formulas 3kHz n where n range is from 13 to 250 freq 0 012 to 0 23077kHz 60kHz n where n range is from 4 to 256 freq 0 23438 to 15kHz 200kHz n where n range is from 2 to 13 15 385 to 100kHz The nominal value of an available frequency can be calculated from the appropriate formula above The range of test frequency is between 12Hz and 100kHz To select the test frequency enter the desired frequency via these numerical keys The instrument will select the nearest available test frequency from the 503 settings Steps of Test Frequency selection Figure 4 9 e Press compound key FREQ e Input the desired frequency i
14. cally then start the LCR VIEW again to begin another recording of test result data Refer to Figure 8 9 and 8 10 eslu 2001 9 26 PM 01 24 14 C 206 99 uF D 0416 V 0 500 CN AUTO INTB Instek LCR METER LENE por E sss Message rea Online Coml BaudRate 38 4 k Filename of test result CPROGRA IVATEXLCRVIEWALCR 0015 Txt El E sem Gifs D Mier 511800 01 24 Figure 8 9 45 LCR 819 User Manual Tus C PROGRA 1 ATELCRVIEWLCR_0015 Txt Factor Pri Unit Secondary Factor Secondary Unit Time 2001 9008 BM 012402 CID 206 99 uF 0416 200 PM 01 24 Figure 8 10 46 LCR 819 User Manual 8 3 Data cable configuration Use the cable between DCE and DTE 9 PIN D SUB FEMALE to Computer D SUB1 9 6 9 PIN D SUB FEMALE to LCR Meter D SUB2 D SUB1 D SUB2 Receive Data 2 3 Transmit Data Transmit Data 3 2 Receive Data Data Terminal Ready 4 6 1 Data Set Ready Carrier Detect System Ground 5 5 System Ground Data Set Ready Carrier 6 1 4 Data Terminal Ready Detect Request to Send 7 8 Clear to Send Clear to Send 8 7 Request to Send 47
15. e MANU Triggered mode e Selects AUTO or MANU mode by pressing this key for 3 seconds at least e The LCR Meters will process the measurement automatically if the AUTO mode is selected 1 key ENTER This key enables programming of all special functions test frequency test voltage averaging delay and nominal value etc Symbol key Inputs the decimal point Numeral 2 j Numeral key 3 j Numeral 5 j Numeral 6 j Numeral key 9 j Primary Display This line can display the measured Inductance Capacitance or Resistance This line can display the measured Quality Factor Q Dissipation Factor Tan 6 Equivalent Series Resistance ESR or Equivalent Parallel Resistance EPR 23 Instrument status or indicates measurement results based on entered test limits Test conditions 25 Input terminals BNC connectors connects to device under test DUT Connectors of the LCR Meter BIAS LCR 819 User Manual Lforce current low Lsense potential low Hsense potential high Hforce current high LCR 819 User Manual FRONT PANEL LCR 819 User Manual 4 OPERATION 4 1 Connections to Device Under Test DUT The LCR 819 uses a four wire measurement technique which allows accurate easy and stable measurements This avoids stray capacitance mutual inductance effects int
16. e LCR Meters can be shown on the LCD screen in select the appropriate item for measurement The LCD screen will display the measured value of both the primary and secondary parameter shown with decimal point and units The resolution of the primary display L C or R is five digits The resolution of secondary display D Q or R with C is four digits The message TESTING is displayed when a test is in progress The DELTA shows the percent deviation of the measured L C or R value from a stored NOMINAL VALUE The sign of deviation is indicated DELTA The LCR difference is similar to the DELTA except that the deviation is shown in suitable units Ohms Henries etc 14 LCR 819 User Manual L 1 2345H DISPLAY Press F2 key to select th Q 0 6789 uc dde aee MODE display VALUE TESTING L Q DELTA or DELTA CIRCUIT F 1 000 kHz OFF SERIES V 1 000 V C V OFF MANU INT B OFF MENU Figure 4 5 Types of measurement display 4 4 4 Nominal Value Allows entry of a Nominal Value for the primary parameter which is the basis for the measurement result in DELTA or DELTA Yo Accepts numerical entry up to five digits with decimal point The units are depended on which measurement display is selected 15 LCR 819 User Manual E of No Press e Press inal Value input Figure 4 6 ENS J key key to select SORT menu e Press Ef the adjacent LCD sc
17. ed FAST 10 Kc Frequency amp RMS Voltage factor refer to Table A 34 LCR 819 User Manual X X is value of the component being tested Y Y is range constant refer to Table B Rx and Cx are value of the component being tested Rmax Rmin Cmax and Cmin are range constants refer to Table B Table A for range 1 2 3 Kc Voltage 0 03 lt 0 1 0 1 lt 0 25 0 25 lt lt 1 1SVS1 265 35 12 9 7 30 8 5 3 25 6 3 2 20 5 2 l 14 4 1 0 15 5 2 15 6 3 2 15 8 5 3 20 10 6 5 20 lt 50 30 22 18 15 50 lt lt 100 50 40 35 30 test frequency in kHz LCR 819 User Manual Table A for range 4 Kc Frequency ee ee 0 030 X lt 0 1 lt 3 2 l 1 lt lt 3 2 6 15 10 lt 20 Not specified 50 EA Thi i d above 20kH 50 lt F lt 100 1s range 1s not used above Z F test frequency in kHz Table B 1 Range Hold Component Inductor Capacitor Resistor Range Max Min Max Min Max Min l mH f ImH f 25uF f L6uF f 1000 6 250 256mH f 16mH f 1600nF f IOOnF f 1 6kQ Range 4100mH f 256mH 100nF f 64nF f 256kQ 1 6kQ Range4 65H f 4 1H f 6400pF f 400pF f 410kQ 25 6kQ f test frequency in kHz This range is not used above 20kHz Table B 2 Auto Range Auto range 65H f f 25uF f 400pF f 410kQ 6 250 Above 20kHz Cmin 6 4 nF f and
18. erference from measurement signals noise and other factors inherent with other types of connections 4 2 Start Up PONEN the power cord of the instrument to the mains socket outlet Press the P button on the front panel to apply the a c power to the instrument 4 3 Zeroing In order to negate the effects of stray capacitance and impedance of test leads and fixtures the instrument should be zeroed before taking measurements The corrections are calculated and stored in the internal memory of the instrument during the zeroing process Both open and short circuit zeroing should be carried out For the consistent accuracy the instrument and test cable and or test fixture should be zeroed once per day at least and every time alterations are made to the test leads or fixture The zeroing process of open and short circuits are as follows e The test cable or fixture should be connected to the LCR meter but left open with no component connected e y e key to select OFFSET menu e Press key to select open circuit zeroing the CAP OFFSET is indicated on the adjacent LCD screen e After the BAR at the bottom of LCD screen is filled to full the zeroing process is complete e If the zeroing process is successful a message of will appear on the LCD screen If unsuccessful the message FAIL will appear S t e e test cables should be connected together or the test fixture shorted u
19. high value resistor is shunt capacitance If the Q is less than 0 1 the measured Rp is probably very close to the dc resistance The total loss of a capacitor can be expressed in several ways including D and ESR Equivalent Series Resistance ESR is typically much larger than actual ohmic series resistance of the wire leads and foils that in series with the heart of a capacitor physically because ESR includes also the effect of dielectric loss ESR is related to D by the formula ESR Rs D oCs Where represents 2 pi time frequency o 27f Although it is traditional to measure series inductance of inductors there are situations in which the parallel equivalent circuit better represents the physical component For small air core inductors the significant loss mechanism is usually ohmic or copper loss in the wire therefore the series circuit is appropriate Nevertheless for an iron core the significant loss mechanism can be core loss therefore the parallel equivalent circuit is appropriate which gives a better model of the inductor 13 LCR 819 User Manual L 1 2345 EE Q 0 6789 MODE CIRCUIT 1 000 kHz OFF SERIES 1 000 V C V OFF MANU OFF Press F4 key to select the Series or Parallel circuit Figure 4 4 Selections of Series amp Parallel Circuit 4 4 3 Measurement Displays The measured results of th
20. ility After Constant Voltage is selected The instrument will maintain a source resistance of 25O Therefore the test voltage is kept constant for any DUT whose impedance is greater than 25Q If Constant Voltage is selected the measurement accuracy will cause be reduced by a factor of three Press compound key f to select the feature of Constant Voltage To disable this feature press the same key again 22 LCR 819 User Manual 1 2345 EE 0 6789 MEET 1 9 Press menu key 1 000 kHz R H OFF SERIES V 1 000 V C V OFF MANU INT B OFF Test Voltage CAP R L OFFSET OFFSET SET SORT SORT Press F3 key SET PARAMETER SETTING to the setting menu CALIBRATION CALBRAT MOMORY NO VOLTAGE Press F2 key to input the desired AVERAGE test voltage Figure 4 10 Programming of test voltage 23 LCR 819 User Manual 4 5 6 Range Hold If a DUT is removed from the test cable or fixture during the Continuous measurement mode the instrument will change ranges automatically Range Hold may be enabled to prevent this thus reducing the time taken for repetitive measurements Press compound key to select the feature of Range Hold To disable this feature press the same key again 4 5 7 Averaging Enabling this function will allow a test to be repeated a number of times between 1 and 255 to increase the measurement accuracy An average
21. ing information on the equipment and or these user instructions for details As a guide cable of 0 75mm should be protected by a 3A or 5A fuse Larger conductors would normally require 13A types depending on the connection method used Any moulded mains connector that requires removal replacement must be destroyed by removal of any fuse amp fuse carrier and disposed of immediately as a plug with bared wires is hazardous if a engaged in a live socket Any re wiring must be carried out in accordance with the information detailed in this booklet and comply with current regulations iii LCR 819 User Manual 1 INTRODUCTION The Isotech LCR 819 meter is an automatic user programmable instruments which provides good reliability and high precision for measuring a wide variety of impedance parameters The measurement frequency range of the LCR 819 covers from 12Hz to 100kHz and the basic measurement accuracy is 0 05 The measured results can be displayed on the high quality LCD screen which also shows decimal points and units The measured result resolution i is five full digits Dissipation factor Or rc with R In the LCD screen also shows the control status and parameters of the settings The keypads are easy to use for menu programming Test conditions can be stored and recalled from internal the memory which will reduce the setup time for measurement preparation LCR 819 User Manual 2 PRECAUTIONS B
22. n kilohertz Note After the test frequency has been changed the Open Short circuit calibration must be repeated to obtain the specified accuracy 20 LCR 819 User Manual 7 8 BIAS ON OFF Press key to input test Press enter key to confirm the frequency inputs L 1 2345 A 0 6789 MODE CIRCUIT R H OFF SERIES 1 000 V C V OFF MANU INT B OFF MENO test frequency Figure 4 9 Inputs of test frequency 21 LCR 819 User Manual 4 5 3 D Q in PPM parts per million If the value of D or Q is less than 0 0100 user can select DQ in PPM to improve the resolution by a factor of 100 The units of D and Q in PPM are dimensionless and expressed as a decimal ratio with the multiplier of 1000000 User can just press compound key d to select the unit of D or Q in PPM To disable the DQ in PPM feature press the same key again 4 5 4 Test Voltage The range of test voltage is from 5mV to 1 275V in increments of 5mV The actual voltage applied to the DUT is never more than the source voltage The DUT impedance and the source resistance of the instrument decide the actual test voltage The smallest voltage applied to the DUT will be 20 less than the source voltage in general The programming of test voltage is as follows Figure input is complete 4 5 5 Constant Voltage Source If the DUT has to be measured at a particular test voltage the instrument has a constant voltage fac
23. ng the display after each measurement MANUAL mode is activated by pressing the START button and the measured result is displayed The reading remains on the LCD screen until the next measurement is made desired in either of the two measurement modes In AUTO mode only the final value is shown In MANUAL mode the running average is shown and the final value held until the START key is depressed again 31 LCR 819 User Manual 100 memory blocks total A 2V internal bias can be applied to capacitors during measurement Up to 30Vd c external bias can be applied to capacitors during measurement via the two terminals located on the rear panel The applied current should not exceed 200mA 240x128 dot matrix C C F L back light LCD with adjustable contrast A replaceable 3V lithium battery BR 2 3A type for system memory and calibration data backup with a life expectancy of approximately 3 years After the battery is replaced the instrument MUST be re calibrated Indoor use Altitude up to 2000m Installation Category II Pollution Degree 2 Operating temperature 10 C 50 C lt 85 relative humidity Storage temperature 20 C 60 C 100 to 240V a c 50 60Hz 45 Watts maximum Slow Blow 3A 250V 5 x 20 mm High Breaking Capacity 330mm W x 149mm H x 437mm D 32 LCR 819 User Manual 33 LCR 819 User Manual The formulae fo
24. oing menu Press F2 key SET SORT to the bin sort menu CAP R L OFFSET SET PARAMETER SETTING Press F3 key to the utility CALIBRATION menu Press F4 key to the calibration menu Press MENU key to ezit menu screen Figure 4 2 four main menu screen 4 4 1 Primary amp Secondary Display With this instrument four combinations of two parameters can be measured and displayed simultaneously One refers to the Primary Display displayed first and the other to the Secondary Display Depending on the component type the primary and secondary display could be amp C amp D amp and 4 3 11 LCR 819 User Manual Prim ary Secondary D isplay D isplay SPEED H SLOW Q 0 5 6789 Press F3 key successively in order to select the different TESTING measurement mode CIRCUIT L Q C D C R R Q 1 000 kHz OFF SERIES 1 000 V C V OFF MANU OFF MENU Figure 4 3 Primary amp Secondary display The user can select R Q for resistor measurement select L Q for inductor measurement or select either C D or C R for capacitor measurement 4 4 2 Series amp Parallel Equivalent Circuit Impedance that is neither a pure resistance nor a pure reactance can be represented at any specific frequency by either a series or a parallel combination of resistance and reactance Such representation is called the equivalent 12 LCR 819 User Manual
25. on Ensure there is proper ventilation for the vents in the instruments case If this equipment is used not according to the specification the protection provided by the equipment may be impaired this product may cause radio interference in which case the user WARNING This is a Class A product In a domestic environment may be required to take adequate measures LCR 819 User Manual 3 CONTROL PANEL DESCRIPTION e For making numerical entries as labeled e Turns the RANGE HOLD mode on or off 8 Compound key e For making numerical entries as labeled e Turns the CONSTANT VOLTAGE mode on or off 9 Compound key e For making numerical entries as labeled e Measures the unit of Dissipation and Quality Factor in PPM e For making numerical entries as labeled e Selects the INTERNAL BIAS mode or EXTERNAL BIAS mode If this key function is switched to INTERNAL BIAS mode the bottom of LCD monitor will display the INT B message If the external DC bias is selected the bottom of LCD monitor will display the EXT B message Compound key e For making numerical entries as labeled e Turns the INTERNAL BIAS mode or EXTERNAL BIAS mode ON or OFF LCR 819 User Manual 12 Compound key e For making numerical entries as the negative sign e Inputs the TEST FREQUENCY j START Compound key e Starts measurement sequence Normally used in th
26. r practices that could result in injury or loss of life that could result in damage to the instrument or other property CAUTION Caution statements identify conditions or practices The following symbols may appear in this manual or on the product A GO gt DANGER ATTENTION Protective Frame or High Voltage refer to Manual Conductor Chassis Terminal Terminal LCR 819 User Manual FOR UNITED KINGDOM ONLY NOTE This lead appliance must only be wired by a competent person WARNING THIS APPLIANCE MUST BE EARTHED IMPORTANT The wires in this lead are coloured in accordance with the following code Green Yellow Earth Blue Neutral Brown Live Phase As the colours of the wires in main leads may not correspond with the colours marking identified in your plug appliance proceed as follows The wire which is coloured Green amp Yellow must be connected to the Earth terminal marked with the letter E or by the earth symbol or coloured Green or Green amp Yellow The wire which is coloured Blue must be connected to the terminal which is marked with the letter N or coloured Blue or Black The wire which is coloured Brown must be connected to the terminal marked with the letter L or P or coloured Brown or Red If in doubt consult a competent electrician or the RS Technical Helpline on 01536 402888 This cable equipment should be protected by a suitably rated and approved HBC mains fuse refer to the rat
27. r primary readout accuracy of C R and L are C 0 03 0 02 1 or X Ymax or Ymin X 1 D Kb Ke 0 03 0 02 1 or X Ymax or Ymin X 1 Q 1 Kb Ke L 0 03 0 02 1 Ka or X Ymax or Ymin X 1 1 Q Kb Ke The formulae of secondary readout accuracy for D and Q are Error D with 2count 0 0003 0 0002 1 Ka or X Ymax or Ymin X 1 D D X D 1 Kb Kc Q with R 2count 0 0003 0 0002 1 Ka or X Ymax or Ymin X 1 Q 1 Q with L 2count 0 0003 0 0002 1 or X Ymax or Ymin X 1 Q Q X Q 1 Kb Kc 1 if X 2Ymax select X Ymax 2 if X Ymin select Ymin X 3 if Ynin X Ymax select 1 Ka The formulae for secondary readout accuracy of R with C are Error 0 02 1 Ka or Rx Rmax or Rmin Rx 1 1 D 1 Kb Kc 0 03 2count 0 02 1 or Cmin Cx 1 1 D 1 Kb Kc 0 03 1 If Rx 2 Rmax select Rx Rmax 2 if Rx SRmin select Rmin Rx 3 if Rmin Rx Rmax select 1 Ka 1 f Cx Z Cmax select Cx Cmax 2 if Cx Cmin select Cmin Cx 3 if Cmin Cx select 1 Ka Where Ka Constant Voltage factor Constant Voltage On Ka 2 Constant Voltage Off Ka 0 Kb Test Speed factor Speed SLOW Kb 0 Speed MEDIUM 3 Spe
28. reen e Input the nominal value via the numeral keys 5 digits with decimal point indem e After BAR at the bottom of LCD monitor is filled the Nominal Value input is complete 4 4 5 Selection of Measurement Speed One of three measurement speeds SLOW MEDIUM or FAST may be selected Figure 4 7 The continuous mode speeds are about 1 5 or 12 measurement per second respectively The trade off is accuracy vs speed The instrument will take a more accurate measurement at a slower rate The trade off is as follows SLOW speed More than 1 measurement per second at 0 05 accuracy or better MEDIUM speed More than 3 measurements per second at 0 1 accuracy or better FAST speed More than 7 measurements per second at 0 24 accuracy or better For the details of accuracy please refer to the specifications 16 LCR 819 User Manual L 1 2345H Q 0 6789 TESTING F 1 000 kHz 1 000 V MANU R H OFF C V OFF INT B OFF CAP R L OFFSET SET SORT SET PARAMETER CALIBRATION NOM VAL 77 000pF OPTION 1 VALUE L Q NU SERIES ME OFFSET SORT SETTING CALBRAT NOM VAL 24 870 HANDLER EXIT Figure 4 6 Steps of Nominal Value input 17 Press menu key Press F2 key to the sort menu ress F1 key to input the nominal value LCR 819 User Manual Press F1 key to select the three different measurement speed SLOW MEDIUM or
29. sing a clean copper wire as short as possible 8 LCR 819 User Manual on the adjacent LCD screen e After the BAR at the bottom of LCD screen is filled to full the zeroing process is complete e If the zeroing process is successful a message of will appear the LCD screen If unsuccessful the message FAIL will appear 5 Test speed SLOW R H OFF C V OFF For the summary the zeroing menu can be chosen through menu selection as shown in Figure 4 1 above LCR 819 User Manual L 1 2345H DISPLAY VALUE Q 0 6789 TESTING Press menu F 1 000 kHz R H OFF 1 000 V C V OFF MANU OFF CAP R L OFFSET SET SORT SET PARAMETER CALIBRATION OPEN TEST SHORT TEST L CIRCUIT key Press F1 key OFFSET to the zeroing menu SORT SETTING CALBRAT EXIT Press F1 KEY for open test Press F2 KEY for OFFSET short test Figure 4 1 Summary of zeroing menu 10 LCR 819 User Manual 4 4 Menu Functions All the instruments programmable functions are controlled by the easy to use that calls up four top level menus OFFSET SORT SETTING and CALBRAT Each one of these is comprised of a sub menu list whose functions are described in detail below The user can enter one of four functions by pressing the corresponding function key adjacent to the LCD screen see figure 4 2 Press F1 key to the zer
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