889B LCR Meter Manual
Contents
1. 16 2 2 6 Capacitance Measurement 16 2 2 7 Inductance 1 16 3 JOP ERATION MODE 17 3 1 REMOTE MODE COMMAND SYNTAX 20 REMOTE MODE COMMANDS pda pd d E aet da p ee E ERR 20 A APPLICATION A sessanta sad a d Maeva d NoD 26 4T TESTEEADS CONNECTION 5 26 42 OPEN SHORT COMPENSATION 28 4 3 SELECTING THE SERIES OR PARALLEL 29 5 LMITED THREE YEAR WARRANTY 31 b GSAREDY PREGAUTIDON e eal ta dva a 33 1 Introduction 1 1 General B amp K Precision Corp 889B Synthesized In Circuit LCR ESR Meter is a high accuracy test instrument used for measuring inductors capacitors and resistors with a basic accuracy of 0 1 Also with the built in functions of DC AC Voltage Current measurements and Diode2. Effect Of High D on Accuracy A low D Dissipation Factor reading is desirable Electrolytic capacitors inherently have a higher dissipation factor due to their normally high internal leakage characteristics If the D Dissipation Factor is excessive the capacitance measurement accuracy may be degraded 12 It is best to check with the component manufacturers data sheet to determine the desirable D value of a good component Measuring Capacitance of Cables Switches or Other Parts Measuring the capacitance of coaxial cables is very useful in determining the actual length of the cable Most manufacturer specifications list the amount of capacitance per foot of cable and therefore the length of the cable can be determined by measuring the capacitance of that cable For example A manufacturers specification calls out a certain cable to have a capacitance of 10 pF per foot After measuring the cable a capacitance reading of 1 000nF is displayed Dividing 1000pF 1 000 nF by 10 pF per foot yields the length of the cable to be approximately 100 feet Even if the manufacturers specification is not known the capacitance of a measured length of cable such as 10 feet can be used to determine the capacitance per foot Do not use too short length such as one foot because any error becomes magnified in the total length calculations Sometimes the affecting stray capacitance of switches interconnect cables circuit board foils or other part
3. 100 1 1 0 1 Zx 10M 1M 100K 10K 1K 100 Q Q Q Q Q Freq 100Hz 1 046 0 523 0 261 0 105 0 105 0 105 0 261 0 523 120Hz 9 o 1KHz 10KHz 2 615 1 046 9 100KHz NA 2 615 1 046 40 409 0 209 0 409 1 046 2 615 200KHz e Z Accuracy As shown in table 1 C Accuracy 2 2 Cae Ae of C f Test Frequency Hz Cx Measured Capacitance Value F Zx Measured Impedance Value Accuracy applies when Dx measured D value lt 0 1 When gt 0 1 multiply Cae by V1 Dx Example Test Condition Frequency 1KHz Level 1Vrms DUT 100nF Then 1 Z 2 1 15900 2 7 109 100 107 Refer to the accuracy table get 0 1 L Accuracy Iz 2 a f Lx Lae Ae of L f Test Frequency Hz Lx Measured Inductance Value Zx Measured Impedance Value Accuracy applies when Dx measured D value lt 0 1 When Dx gt 0 1 multiply Lae by V1 Dx Example Test Condition Frequency 1KHz Level 1Vrms DUT dmH Then Zx 2 a f Lx 2 7m 10 107 6 2830 Refer to the accuracy table get Lae 0 5 ESR Accuracy A 1 E Xx 22m f Lx ESR 2 100 2 a f Cx ESRae of ESR f Test Frequency Hz Xx Measured Reactance Value Lx Measured Inductance Value H Cx Measured Capacit
4. 10 DEG 11 ESR Bit 16 Bit 13 0000 RH nH Reserved 0001 RH uH RH mV mA 0010 RH mH RH V A 0011 RH H Reserved 0100 RH pF 0101 RH nF 0110 RH uF 0111 RH mF 1000 RH F 1001 RH Ohm 1010 RH K Ohm 1011 RH M Ohm 1100 Reserved 1101 1110 1111 Auto Ranging Auto Ranging Bit 17 0 Short Cal Short Cal 1 Open Cal Reserved Bit 21 Bit 18 Measurement Modes 0000 Reserved 0001 LCR 0010 DCV 0011 ACV 0100 Diode 0101 Continuity 0110 DCA 0111 ACA Others Reserved Bit 23 Bit 22 Reserved 00 01 10 11 For example if LCR function Cp with D measurement mode is selected in Auto ranging with Relative and Open Short Calibration are turned off and test signal is 1 Vrms in 1 KHz then the command is as following MOD 000001111110001011010010 The results of the measurement that will be sent from the 889B to a remote PC will be packed in either 7 byte or 11 byte format When dual data such as Cp with D will be sent the data is packed in 11 byte format shown as following Lead code 02 Lead code2 09 Data code 8 byte long two 32 bit floating point number format the first 4 byte is the main reading Cp and the second 4 byte is the secondary reading D Checksum 02 09 data_code amp amp OxOOFF 02 09 M BO M B1 M B2 M B3 S BO S B1 S B2 S B3 CS where M
5. 159 1H 15 91H 1 591H 159 1mH 15 91mH 159 1uH iKHz 1 591KH 159 1H 15 91H 1 591H 159 1mH 15 91mH 159 1uH 15 91uH 29 1 1 1 0 5 1 0 2 1 0 196 1 0 296 1 0 5 196 1 1 318 3H 159 1H 15 91H 1 591H 159 1mH 15 91mH 1 591mH 15 91u0H 10KHz 159 1H 15 91H 1 591H 159 1mH 15 91mH 1 591mH 15 91uH 1 591uH 5 1 296 1 0 596 1 0 2 1 01 1 0 2 1 0 5 1 196 1 e e 31 83H 15 91H 1 591H 159 1mH 15 91mH 1 591mH 159 1uH 1 591uH 100KHz 15 91H 1 591H 159 1mH 15 91mH 1 591mH 159 1uH 1 591uH 0 159uH NA 5 1 2 1 1 1 0 4 1 1 1 2 1 5 1 15 91H 7 957H 795 7mH 79 57mH 7 957mH 795 7uH 79 57uH 0 795uH 200KHz 7 957 795 7mH 79 57mH 7 957mH 795 7uH 79 57uH 0 795uH 0 079uH NA 596 1 2 1 196 1 0 496 1 196 1 2 1 596 t 1 D Accuracy 20M 10 1 100K 10K 1K 100 1 1 0 1 Zx 10M 1M 100K 10K 1K 100 Q Q Freq 100Hz 0 020 0 010 0 005 0 002 0 002 0 002 0 005 0 010 120Hz 1KHz 10KHz 0 050 0 020 9 100KHz NA 0 050 0 020 0 010 0 004 0 010 0 020 0 050 200KHz e 0 Accuracy 20M 10 1M 100K 10K 1K
6. In figure 4 6 a the parasitic capacitor Cd is paralleled to DUT as well as the Ci and Ch To correct this problem add a guard plane Figure 4 6 b in between H and L terminals to break the Cd If the guard plane is connected to instrument guard the effect of Ci and Ch will be removed HcUR X HPOT LCUR HcUR Guard Plant Se ion TO Ton E MED m BHHHH m m m m m a Parastic Effect 0 Guard Plant reduces Parastic Effect Figure 4 6 4 2 Open Short Compensation For those precision impedance measuring instruments the open and short compensation need to be used to reduce the parasitic effect of the test fixture The parasitic effect of the test fixture can be treated like the simple passive components in figure 4 7 a When the DUT is open the instrument gets the conductance Yp Gp joCp Figure 4 7 b When the DUT is short the instrument gets the impedance Zs Rs joLs Figure 4 7 c After the open and short compensation the 889B has Yp and Zs that can then be used for the real Zdut calculation Figure 4 7 d 28 Parastic of the Test Fixture Redundant Parastic Zs Impedance Conductance 470 E WEM Hcun Rs Ls Zm Co Go Zdut Leun a Parastic Effect of the Test Fixture Hcur Rs Ls Yo Co Go OPEN Lcun Yo 2 Go EsCo 1 Rs PS Esco b OPEN Measurement Hcun Rs Ls Zs Co lt Go SHORT LPor ae Zs Rs c SHO
7. even with the power cord removed dangerous voltages may exist when the covers are removed To avoid injuries always disconnect the power cord from 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 Considerations When LCR measurement mode is selected the following factors shall be considered Test Frequency The test frequency is user selectable and can be changed Generally a 1 KHz test signal or higher is used to measure capacitors that are 0 01uF or smaller and a 120Hz test signal is used for capacitors that are 10uF or larger Typically a 1 KHz test signal or higher is used to measure inductors that are used in audio and RF radio frequency circuits This is because these kinds of inductors operate at higher frequencies and require that they shall be measured at a higher frequency Generally inductors with inductances below 2mH should be measured at test frequency of 1 KHz or higher and inductors above 200H should be measured at 120Hz or lower It is best to check with the component manufacturers data sheet to determine the best test frequency for the device Charged Capacitors Always discharge any capacitor prior to making a measurement since a charged capacitor may seriously damage the meter
8. Audible Continuity checks the 889B can not only help engineers and students to understand the characteristics of electronics components but also being an essential tool on any service bench The 889B is defaulted to auto ranging However it can be set to auto or manual ranging by pressing the Range Hold key When LCR measurement mode is selected one of the test frequencies 100 Hz 120 Hz 1 KHz 10 KHz 100 KHz or 200 KHz be selected on all applicable ranges One of the test voltages 50mVrms 0 25 Vrms 1 Vrms or 1 VDC DCR only may also be selected on all applicable ranges The dual display feature permits simultaneous measurements When DC AC voltage current measurement mode or the Diode Audible Continuity Check mode is selected only the secondary display will be used to show the result of the measurement The highly versatile 889B can perform virtually all the functions of most bench type LCR bridges With a basic accuracy of 0 1 this economical LCR meter may be adequately substituted for a more expensive LCR bridge in many situations Also with the basic accuracy of 0 4 in voltage and current measurements the 889B performs the functions of a general purpose Digital Multi Meter and can be used to replace the DMM on a service bench The 889B has applications in electronic engineering labs production facilities service shops and schools It can be used to check ESR values of capacitors sort and or select components measure unma
9. HPOT Terminal DCV ACV Function Key HCUR Terminal Diode Continuity Function Key COM Terminal V Diode Continuity Terminal USB Port 2A Fuse 2 2 Making Measurement 2 2 1 Open and Short Calibration The 889B provides open short calibration capability so the user can get better accuracy in measuring high and low impedance We recommend that the user perform open short calibration if the test level or frequency has been changed Open Calibration First remaining the measurement terminals at the open status press the This calibration takes about 15 seconds After it is finished the 889B will beep to show that the calibration is done Short Calibration rmn CALD xt Frequency Hz Test Level V Open key then the LCD will display To perform the short calibration insert the Shorting Bar into the measurement terminals Press the Short then the LCD will display LAL l F at a Frequency Hz Test Level V key This calibration takes about 15 seconds After it is finished the 889B will beep to show that the calibration is done 2 2 2 Relative Mode The relative mode lets the user to make a quick sort of a bunch of components First insert the standard value component to get the standard value reading Approximately 5 seconds to get a stable reading Then press the Relative key the pr
10. 0 5 tan 6 _ Xs _ 1 Rs Rs Rs _ B G R R aCpRp ep There are two types of the circuit mode the series mode and the parallel mode See Figure 1 2 to find out the relationship of the series and parallel modes Real and imaginary components are serial Real and imaginary components are parallel jX Fi G 1 Rp A Z used ATRE 8 1 Xp Y G jB Figure 1 2 1 3 Specification Measuring Range Parameter Range Z 0 000 Q to 500 0 MQ L 0 08000H to 9999H 0 003pF to 80 00 mF DCR 0 000 Q to 500 0 MQ ESR 0 000 Q to 99990 D 0 000 to 9999 0 000 to 9999 180 0 to 180 0 Voltage Current Measurements V 0 0 mV to 600V A 0 000mA to 2 Accuracy Ae 1 DC Voltage Measurement Range Resolution Accuracy Input Impedance 1 M Ohm 2V 20V 200V and 600V 1mV 10mV 100mV and 1V 0 4 digits 2 AC Voltage Measurement True RMS Range 2V 20V 200 and 600V Resolution 4mV 10mV 100mV and 1V Accuracy 0 8 5 digits Input Impedance 1 M Ohm 3 DC Current Measurement Range 2mA 20mA 200mA and 2000mA Resolution 10uA 100uA and 1mA Accuracy 0 4 digits Current Shunt 0 1 Ohm 20mA 10 Ohm x20mA 4 AC Current Measurement True RMS Range 2mA 20mA 200mA and 2000mA Resolution 10uA 100uA and 1mA Accuracy 0 8 5 dig
11. 641 0 596 1 195 1 7 957pF 15 91pF 159 1pF 1 591nF 15 91nF 159 1nF 1 591uF 159 1uF 4KHz 15 91pF 159 1pF 1 591nF 15 91nF 159 1nF 1 591uF 159 10 1 591mF 29 41 19621 0 5 1 0 2 1 0 1 1 0 29641 0 596 4 1 196 1 0 795pF 1 591pF 15 91pF 159 1pF 1 591nF 15 91nF 159 1nF 15 91uF 10KHz 1 591pF 15 91pF 159 1pF 1 591nF 15 91nF 159 1nF 15 91uF 159 1uF 5 1 2 1 0 5 1 0 2 1 0 1 1 0 2 1 0 5 1 1 1 0 159 1 591pF 15 91pF 159 1pF 1 591nF 15 91nF 1 591uF 100KHz 1 591pF 15 91pF 159 1pF 1 591nF 15 91nF 1 591uF 15 91uF NA 5 1 2 1 1 1 0 4 1 1 1 2 1 5 1 0 079pF 0 795pF 7 957pF 79 57pF 795 7pF 7 957nF 795 7nF i 7 0 795 7 957 79 57pF 795 7 7 957 795 7nF 7 957uF 5 1 2 t 1 1 1 0 4 1 1 1 2 1 5 1 L Accuracy 31 83KH 15 91KH 1591H 159 1H 15 91H 1 591H 159 1mH 1 591mH 100 2 15 91KH 1591H 159 1H 15 91H 1 591H 159 1mH 1 591mH 159 1uH 29 1 1 1 0 5 1 02 1 0 196 1 0 2 1 0 595 1 195 1 26 52KH 13 26KH 1326H 132 6H 13 26H 1 826H 132 6mH 1 326mH 1420Hz 13 26 1326H 132 6H 13 26H 1 826H 132 6mH 1 326mH 132 6uH 2 1 1 1 0 5 1 0 2 1 0 1 1 02 1 0 596 1 195 1 3 183KH 1 591KH
12. ASC ON OK CPRP OK MODE 1KHz 1Vrms CpRp uF Ohm Measurement mode Unit of primary display return value return value 23 Example ASC ON OK DCV OK MODE DCV V return value RANG mV OK MODE DCV mV return value RANG PARAMETER Set query the measurement unit RANG PARAMETER Set the measurement unit according to the parameter OK string will be returned when setting is complete PARAMETER ASCII string Numerical code pF 0 nF 1 uF 2 mF 3 F 4 nH 8 uH 9 mH 10 H 11 KH 12 mOhm 17 Ohm 18 KOhm 19 MOhm 20 mV 21 V 22 mA 23 A 24 Example RANG pF OK e RANG Return the current measurement unit setting Example ASC ON OK RANG pF return value 24 ASC OFF OK RANG 0 return value READ Return the measurement value This command will perform a measurement according to the current measurement mode and return the measured value Example CPD OK READ 0 22724 0 12840 return value DCR OK READ 5 1029 return value The DCR DCV and ACV measurements will send only one measured value The other measurement modes will send two measured values separated by space ASCII 20H 25 4 Application 4 1 Test Leads Connection Auto balancing bridge has four terminals Hcun Lcun and Lror to connect to the device under test DUT It is important to understand what connection method will affect the measurement accur
13. BK CISION INSTRUCTION MANUAL v072814 Model 889B Bench LCR ESR Meter with Component Tester Contents EONAR NIT 1 t NTRODUGTON ia dra eet et det 3 2GENERALE 3 1 2 IMPEDANCE 5 4 19 SPECIFICATION i 5 1 4 55 13 2 OPERATIONE meet cde detecte erts Meo a 14 Daly PHY SIGAT DESCRIPTION 14 2 JAIAKING MEASUREMENBLS iier 15 22122 JO pen and Short Calibration NN NN 15 2 2 2 OE re 15 2 2 3 UCET OO 15 2 2 4 COSUTEINCTIE oe DE 16 2 25 AC Impedance
14. Bx and S Bx are the four bytes floating point format of main and secondary reading which is sent from the lowest byte first When only main reading such as DCR will be sent the data is packed in 7 byte format described below Lead code 02 Lead code2 03 Data code 4 bytes long the 32 bit floating point format of the main reading Checksum 02 03 data_code amp amp OxOOFF When only secondary reading such as DCV will be sent the data is packed in 11 byte format described below Lead code Lead code2 02 03 M BO M B1 M B2 M B3 CS 02 09 Data_code 8 bytes long two 32 bit floating point format of the secondary reading Checksum 02 09 data_code amp amp OxOOFF 02 09 S BO 5 1 S B2 S B3 5 0 S B1 S B2 S B3 CS Remote Mode When in the Remote mode the RMT on the LCD will be lit and the 889B is capable of communicating to remote USB equipped PC or terminal through the build in USB port The connection setting is as follow Transmission Mode Half Duplex Baud Rate 9600 Parity Bit None Data Bits 8 Stop Bit 1 Handshake None In this mode the LCD display and all keypads except the Remote button will be locked And the external program through the USB port controls the operation of the 889B 3 1 Remote Mode Command Syntax Th e command syntax of Models 4090 is as
15. PICAL IMPEDANCE MEASUREMENT RANGE Figure 4 3 5 Terminal 5T 5 Terminal connection is the combination of 3T and 4T Figure 4 4 It has four coaxial cables Due to the advantage of the and 4T this connection can widely increase the measurement range for 10 to 10MQ Hcur HPor LPor CONNECTION b BLOCK DIAGRAM 5T LL I l L I l im 10m 100m 1 10 100 1K 10K 100K 1M 10M c TYPICAL IMPEDANCE MEASUREMENT RANGE WRONG 4T CONNECTION Figure 4 4 4 Terminal Path 4TP 4 Terminal Path connection solves the problem that caused by the test lead inductance 4TP uses four coaxial cables to isolate the current path and the voltage sense cable Figure 4 5 The return current will flow through the coaxial cable as well as the shield Therefore the magnetic flux that generated by internal conductor will cancel out the magnetic flux generated by external conductor shield The 4TP connection increases the measurement range from 1mQ to 10MQ 27 Hcur HPor DUT CONNECTION BLOCK DIAGRAM Hcur HPor 4T i DUT 1m 10 100 1 10 100 1K 10K 100K 1M 10M TYPICAL IMPEDANCE MEASUREMENT RANGE d CONNECTION WITH SHILDING Figure 4 5 Eliminating the Effect of the Parasitic Capacitor When measuring the high impedance component i e low capacitor the parasitic capacitor becomes an important issue Figure 4 6
16. RT Measurement z 2 cede 2 d Compensation Equation Figure 4 7 4 3 Selecting the Series or Parallel Mode According to different measuring requirement there are series and parallel modes to describe the measurement results It is depending on the high or low impedance value to decide what mode to be used Capacitor The impedance and capacitance in the capacitor are negatively proportional Therefore the larger capacitance means the lower impedance the smaller capacitance means the higher impedance Figure 4 8 shows the equivalent circuit of capacitor If the capacitance is small the Rp is more important than the Rs If the capacitance is large the Rs shouldn t be avoided Hence it is properly to use parallel mode for low capacitance measurement and series mode for high capacitance measurement 29 Small capacitor Large capacitor High impedance Low impedance Rp m Effect m No Effect Hs Hs No Effect Effect Inductor The impedance and inductance of a inductor are positively proportional when test frequency is fixed Therefore the larger inductance equals to higher impedance and vice versa Figure 4 9 shows the equivalent circuit of inductor When the inductance is small the Rs becomes more important than the Rp When the inductance is large the Rp should be taking into consideration Therefore it is properly using series mode to measure an inductor with low inductance and paralle
17. Server COM DCOM ATL CONTROL AUTOMATION EXE Built in Model 889B Graphic interface OSI network model and or powerful Interpreter or Parser VB VISUAL C EXCEL ACCESS etc The communication protocol between the 889B and a remote USB equipped PC is described as follows 1 The commands that will be sent from a remote PC to the 889B are used to set up the machine to a selected measurement mode The command syntax is MOD current state code It always starts with MOD follows by a space and then the current state code The current state code that is defined in the table below is bytes 24 bits long bit 23 22 21 bit 0 where bit 23 is the MSB and bit 0 is the LSB 17 18 bit position LCR DC AC V A Bit 2 Bit 0 test freq Reserved 000 100 Hz 001 120 Hz 010 1K Hz 011 10K Hz 100 100K Hz 101 200K Hz 110 Reserved 111 Reserved Bit 4 Bit test level Reserved 00 50 mVrms 01 250 mVrms 10 1 Vrms 11 Reserved Bit 5 Reserved 0 Default Default 1 Reserved Reserved Bit 6 0 Relative Relative 1 Normal Normal Bit 7 0 Calibration Calibration 1 Normal Normal Bit 10 Bit 8 Reserved 000 Lp 001 Ls 010 Cp 011 Cs 100 Z 101 DCR 110 Reserved 111 Reserved Bit 12 Bit 11 Reserved 00 D 01 Q
18. T BE USED PLEASE CONTACT B amp K PRECISION CORP INCORPORATED FOR INFORMATION ON REPAIRS 33 22820 Savi Ranch Parkway PN 481 528 9 001B Yorba Linda CA 92887 Printed in Taiwan USA 2009 B amp K Precision Corp TEL 714 921 9095 5 714 921 6422
19. The Normal mode is the default operation mode when power on It is a local mode that the 889B is controlled by the keypads and the results of the measurement will be sent to both LCD display and a remote USB equipped PC through the build in USB port Binning Mode The Binning mode is reserved for future use such as GPIB Currently it is set to work the same way as the Normal mode that receives commands from the keypads and sends the results of measurement to both LCD display and a remote PC through the USB port e Remote Binning Mode In the Remote Binning mode the RMT Bin on the LCD will be lit the operation of 889B is controlled by a remote USB equipped PC or terminal and the results of the measurement will be simultaneously sent to the local LCD display and remote workstation through the USB port In this mode all functional keypads except Remote button are locked Remote Binning mode is opened for users to design your own private fast and high efficient application programs Users can design a server or driver any software component that can do server s job with Graphic interface OSI network model and powerful interpreter built in it to support Graphic display Network connectivity structure command SCPI IEEE488 etc interpretations and let it be a bridge between a higher level application program such as VB VISUAL C EXCEL ACCESS etc and the 889B It is described in the following figure
20. acy e 2 Terminal 2T 2 Terminal is the easiest way to connect the DUT but it contents many errors that are the inductance and resistance as well as the parasitic capacitance of the test leads Figure 4 1 Due to these errors in measurement the effective impedance measurement range will be limited at 1000 to 10KQ Hcur H x V cof Jour WAN Ro Lo a CONNECTION b BLOCK DIAGRAM at LL I I ij d id I Ig 1m 10m 100m 1 10 100 1K 10K 100K 1M 10M c TYPICAL IMPEDANCE MEASUREMENT RANGE Figure 4 1 e 3 Terminal 3T 3 Terminal uses coaxial cable to reduce the effect of the parasitic capacitor Figure 4 2 The shield of the coaxial cable should connect to guard of the instrument to increase the measurement range up to 10MQ Hcun effect measurement result Lcun a CONNECTION b BLOCK DIAGRAM am l i l l 1 10m 100m 1 10 100 1K 10K 100K 1M 10M TYPICAL IMPEDANCE MEASUREMENT RANGE DUT d 2T CONNECTION WITH SHILDING Figure 4 2 4 Terminal 4T 4 Terminal connection reduces the effect of the test lead resistance Figure 4 3 This connection can improve the measurement range down to 10mQ However the effect of the test lead inductance can t be eliminated 26 BLOCK DIAGRAM 4T im 10m 100m 1 10 100 1K 10K 100K 1M 10M TY
21. ance Value F Accuracy applies when Dx measured D value lt 0 1 Example Test Condition Frequency 1KHz Level 1Vrms DUT 100nF Then PA 2 a f Cx 1 15900 2 2103 100 1079 Refer to the accuracy table get 0 19 ESR a500 100 D Accuracy Ae D 100 10 Ae of D measurement value Accuracy applies when Dx measured D value lt 0 1 When Dx gt 0 1 multiply Dx by 1 Dx Example Test Condition Frequency 1KHz Level 1Vrms DUT 100nF Then Iz 2 1 15900 7 2 102 100 10 Refer to the accuracy table get 0 19 2 De 10 c Q Accuracy 2 De Q4 721 lt Ae of measurement value Measured Quality Factor Value De Relative D Accuracy Accuracy applies when Qx De lt 1 Example Test Condition Frequency 1KHz Level 1Vrms DUT 1mH Then Zx 2 2 f Lx 2 103 1073 6 2830 Refer to the accuracy table get Lae 0 5 59 005 100 If measured Qx 20 Then 2 Q m De Ae 1 De 2 t 1 0 1 _ 180 Ae 100 Example Test Condition Frequency 1KHz Level 1Vrms DUT 100nF Then zx 2 a f Cx 1 15900 2 103 100 1079 Refer to the accuracy table get Zae t0 1 sp PU 4e Ae z 100 _ 180 0 1 Testi
22. de setting or query command DCA DC Current measurement mode setting or query command ACA AC Current measurement mode setting or query command Example CPD set to Cp D measurement mode OK CPD 0 22724 0 12840 return values 5 1029 return value IDN Query the identity of the 889B This command is used to identify the basic information of 889B The return value has four fields separated by comma The total length will not greater than 100 characters The four fields are 1 Manufacturer Name 2 Model Number 3 Serial Number 4 Firmware Version Number Example IDN B amp K PRECISION CORP MODEL889B 123456789 4 096 RST Reset the 889B to the power on default status The default status is 1KHz 1Vrms CpD uF After the 889B is reset it will return the identity string back ASC Set the format of the return value This command sets the ASCII string return or the numerical code PARAMETER ON ASCII string OFF Numerical code 21 Example ASC ON OK return FREQ 1KHz return ASC OFF OK return FREQ 2 return CORR OPEN Perform the open calibration This command sets the 889B to do the open calibration After the calibration is done the 889B will return the OK string back CORR SHORT Perform the short calibration This command sets the 889B to do the short calibration After the calibration is done the 889B will return the OK string back FREQ PARAMETER Set que
23. factor measurement mode setting or querying command CpD Parallel capacitance and dissipation factor measurement mode setting or querying command CsRs Serial capacitance and serial resistance measurement mode setting or querying command CsQ Serial capacitance and quality factor measurement mode setting or querying command CsD Serial capacitance and dissipation factor measurement mode setting or querying command LpRp Parallel inductance and parallel resistance measurement mode setting or querying command LpQ Parallel inductance and quality factor measurement mode setting or querying command LpD Parallel inductance and dissipation factor measurement mode setting or querying command LsRs Serial inductance and serial resistance measurement mode setting or querying command LsQ Serial inductance and quality factor measurement mode setting or querying command LsD Serial inductance and dissipation factor measurement mode setting or querying command e RsXs Serial resistance and serial reactance measurement mode setting or querying command e RpXp Parallel resistance and parallel reactance measurement mode setting or querying command e ZTD Impedance and angle Deg measurement mode setting or querying command ZTR Impedance and angle Rad measurement mode setting or querying command DCV DC Voltage measurement mode setting or query command ACV AC Voltage measurement mo
24. following COMMAND PARAMETER Th 1 2 3 e format of COMMAND and PARAMETER is as following There is at least one space between COMMAND and PARAMETER The PARAMETER should use only ASCII string not numerical code Value parameter can be integer floating or exponent with the unit For example 50mV 0 05V 5 0e1mV The question mark at the end of COMMAND means a query or a measuring command For example CpD sets the measurement mode to Cp and D CpD sets the measurement mode to Cp and D as well as measures the values and send them back The COMMAND and PARAMETER can be either upper or lower case But the unit to describe the value in the PARAMETER should have different between milli m and mega M For example 1mV equals 0 001 V 1MV equals 1000000V The end of command character should be placed at the end There are ASCII CR 0DH or ASCII LF OAH 3 2 Remote Mode Commands Measurement Setting or Querying Command The following measurement mode setting and the query commands are supported the 889B When a mode setting command is entered the 889B will return OK after setting is complete When query command is entered the 889B will send back the values of measurement 20 DCR DC resistance measurement mode setting or querying command CpRp Parallel capacitance and parallel resistance measurement mode setting or querying command CpQ Parallel capacitance and quality
25. he impedance measurement instrument there are DC and AC impedances The common digital multi meter can only measure the DC impedance but the 889B can do both It is very important to understand the impedance parameters of the electronic components When we analysis the impedance by the impedance measurement plane Figure 1 1 it can be visualized by the real element on the X axis and the imaginary element on the y axis This impedance measurement plane can also be seen as the polar coordinates The Z is the magnitude and 9 is the phase of the impedance Imaginary Axis Xe e Z Rs Xs Real Axis Rs Figure 1 1 Rs Z Coso IZ V Rs Xs Xs Z Sine Z mpedance His Resistance Xs Reactance Ohm There are two different types of reactance Inductive XL and Capacitive Xc It can be defined as follows X oL 2zfL Inductance H a 1 Capacitance f Frequency Hz Also there are Quality factor Q and the Dissipation factor D that need to be discussed For component the Quality factor 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 used for inductors and D for capacitors
26. imary display will reset to zero Remove the standard value component and insert the unknown component the LCD will show the value that is the difference between the standard value and unknown value 2 2 3 Range Hold To set the range hold insert a standard component in that measurement range Approximately 5 seconds to get a stable reading Then by pressing the measurement range When the Range Hold key it will hold the range within 0 5 to 2 times of the current Range Hold gt 3052 0035 is pressed the LCD will display 15 2 2 4 DC Resistance Measurement The DC resistance measurement measures the resistance of an unknown component by 1VDC Press the L C Z DCR 2 2 5 The AC impedance measurement measures the Z of an unknown device Press the Z measurement The LCD will display The testing level and frequency can be selected by pressing the 2 2 6 To measure the capacitance of a component users may be able to press the AC Impedance Measurement Capacitance Measurement TENE Frequency Hz Test Level V BOUT s 3b iie Frequency Hz Test Level V key to select the DCR measurement The LCD will display Level key and L C Z DCR key to select the Freq key respectively L C Z DCR key to select either Cs Serial Mode or Cp Parallel Mode meas
27. ion Corp 22820 Savi Ranch Parkway Yorba Linda CA 92887 www bkprecision com 714 921 9095 31 Service Information Warranty Service Please go the service and support section on our website www 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 the service and support section on our website www 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 pre paid 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 www bkprecision com 714 921 9095 Include with the retur
28. its Current Shunt 0 1 Ohm 20mA 10 Ohm x20mA Note The accuracy of DC AC voltage current measurements is only applied when in 596 10096 of the range 5 LCR Measurement Z Accuracy Ae 20M 10M 1M 100K 10K 1 100 100 1 1 0 1 10M 1M 100K 10K 1K Freq Q Q Q Q Q Q Q Q DCR 2 1 1 1 0 5 1 0 296 1 0 1 1 0 2 1 0 5 1 1 1 100Hz 9 o 120Hz 1KHz 10KHz 5 1 2 1 o 100KHz NA 5 1 296 1 196 1 0 4 41 196 1 296 1 5 1 200KHz Note 1 The accuracy applies when the test level is set to 1Vrms 2 Ae multiplies 1 25 when the test level is set to 250mVrms 3 Ae multiplies 1 50 when the test level is set to 50mVrms 4 When measuring L and C multiply Ae by V1 0x if the Dx gt 0 1 Ae is applied only when the test level is set to 1Vrms C Accuracy 79 57pF 159 1 1 591nF 15 91nF 159 1nF 1 591uF 15 91uF 1591uF 100Hz 159 1pF 1 591nF 15 91nF 159 1uF 1 591uF 15 91uF 1591uF 15 91mF 2 1 1 1 0 5 1 0 2 1 0 1 1 0 2 1 0 5 1 1 1 66 31pF 132 6pF 1 326nF 13 26nF 132 6nF 1 326uF 13 26uF 1326uF 120Hz 132 6pF 1 326nF 13 26nF 132 6nF 1 326uF 13 26uF 1326uF 13 26mF 29 41 1 1 0 5 1 0 2 1 0 1 1 0 29
29. l mode to measure an inductor with high inductance Large inductor Small inductor High impedance Low impedance L Rp L Rp Effect No Effect Rs Rs No Effect Effect Figure 4 9 30 5 Limited THREE Year Warranty B amp K Precision Corp warrants to the original purchaser that its products and the component parts thereof will be free from defects in workmanship and materials for a period of three years from date of purchase B 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 obtain warranty coverage in the U S A this product must be registered by completing a warranty registration form on our website www bkprecision com within fifteen 15 days of purchase 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 Precis
30. ned instrument your complete return shipping address contact name phone number and description of problem 32 6 Safety Precaution SAFETY CONSIDERATIONS The Models 889B LCR Meter has been designed and tested according to Class 1A 1B or 2 according to IEC479 1 and IEC 721 3 3 Safety requirement for Electronic Measuring Apparatus SAFETY PRECAUTIONS SAFETY NOTES The following general safety precautions must be observed during all phases of operation service and repair of this instrument Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design manufacture and intended use of the instrument The manufacturer assumes no liability for the customer s failure to comply with these requirements BEFORE APPLYING POWER A Verify that the product is set to match the available line voltage is installed SAFETY SYMBOLS Caution risk of electric shock Earth ground symbol Equipment protected throughout by double insulation or reinforced insulation gt Caution refer to accompanying documents DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT Because of the danger of introducing additional hazards do not install substitute parts or perform any unauthorized modification to the instrument Return the instrument to a qualified dealer for service and repair to ensure that safety features are maintained INSTRUMENTS WHICH APPEAR DAMAGED OR DEFECTIVE SHOULD NO
31. ng Signal Level Accuracy 10 Frequency Accuracy 0 1 Output Impedance 1000 5 General Temperature 0 C to 40 C Operating 20 C to 70 C Storage Relative Humidity Up to 85 AC Input 110 220V 60 50Hz Dimensions 300mm x 220mm x 150mm L x W x H 11 8 x 8 7 x 5 9 Weight 4500g AC Line Selection This instrument can operate on 120 or 220 VAC source at 50 or 60 Hz Before connecting the power plug to an AC line outlet be sure to check that voltage selector switch is set in the correct position corresponding to the line voltage in your location and the fuse rating shown on the rear panel of the unit In order to select the line voltage you MUST open the case of the instrument and select the internal jumper to the correct position To do so remove the front and rear bezels and remove the four screws two on each side from the lower side panels Now slide open the top of the case to reveal the circuitry of the unit On the internal back panel of the unit you will see aline switch labeled as 115V or 230V Once switched assemble the unit back together and insert the proper fuse rating shown on the rear panel of the unit 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
32. rked and unknown components and measure capacitance inductance or resistance of cables switches circuit board foils etc The key features are as following 1 Voltage Measurements True RMS up to 600Vrms 40 1K Hz upto 600V Input Impedance 1M Ohm 2 Current Measurements True RMS up to 2Arms 40 1K Hz DC upto2A Current Shunt 0 1 Ohm gt 20mA 10 Ohm x 20mA 3 Diode Audible Continuity Checks Open Circuit Voltage 5Vdc Short Circuit Current 2 5mA Beep On lt 250 BeepOff 2500 4 LCR Measurements Testconditions Frequency 100Hz 120Hz 1KHz 10KHz 100KHz 200KHz Level 1Vrms 0 25Vrms 50mVrms 1VDC DCR only Measurement Parameters Z Ls Lp Cs Cp DCR ESR D and Basic Accuracy 0 1 Dual Liquid Crystal Display Auto Range or Range Hold USB Interface Communication Open Short Calibration Primary Parameters Display Z AC Impedance DCR DC Resistance Ls Serial Inductance Lp Parallel Inductance Cs Serial Capacitance Cp Parallel Capacitance Second Parameter Display Phase Angle ESR Equivalence Serial Resistance D Dissipation Factor Q Quality Factor Combinations of Display Serial Mode 2 9 Cs D Cs Q Cs ESR Ls D Ls Q Ls ESR Parallel Mode Cp D Cp Q Lp Q 1 2 Impedance Parameters Due to the different testing signals on t
33. ry the measurement frequency FREQ PARAMETER Set the measurement frequency according to the parameter When setting command is entered the 889B will return string after setting is done PARAMETER ASCII string Numerical code 100Hz 120Hz 1KHz 10KHz 100KHz 200KHz aR o Example FREQ 100KHz OK return e FREQ Return the current measurement frequency setting Example ASC ON OK FREQ 1KHz return value ASC OFF OK FREQ 2 return value LEV PARAMETER Set query the measurement level LEV PARAMETER 22 Query the measurement mode If in LCR measurement mode six fields will be returned Set the measurement level according to the parameter When setting is done the 889B will return string PARAMETER ASCII string Numerical code 1VDC 0 1Vrms 1 250mVrms 2 50mVrms 3 Example LEV 1V OK LEV Return the current measurement level setting Example ASC ON OK LEV 1Vrms return value ASC OFF OK LEV 1 return value MODE Frequency Level Measurement mode Unit of primary display 1 2 3 4 5 Unit of secondary display The existence of field 5 depends on the measurement mode For example there s no field 5 if the measurement mode is DCR The separation between fields is space ASCII 20H Example If in Voltage measurement mode three fields will be returned 1 2 ASC ON OK CPD OK MODE 1KHz 1Vrms CpD uF
34. s could be critical to circuit design or must be repeatable from one unit to another Series Vs Parallel Measurement for Inductors The series mode displays the more accurate measurement in most cases The series equivalent mode is essential for obtaining an accurate Q reading of low Q inductors Where ohmic losses are most significant the series equivalent mode is preferred However there are cases where the parallel equivalent mode may be more appropriate For iron core inductors operating at higher frequencies where hysteresis and eddy currents become significant measurement in the parallel equivalent mode is preferred 1 4 Accessories Operating Manual 1 pc AC Power Cord 1 pc Kelvin Clip 1 pc DMM Test Leads 1 pc 13 2 Operation 2 1 Physical Description 2 1 8 5 15 3 7 01 19 9 17 13 14 4 18 RU Atte ade A Lror 8898 Bench LCR ESR NETR uea icun yea LeveL 6 40 42 46 22202526 21 23 4 1 Primary Parameter Display 3 L C Z DCR Function Key 5 Measurement Frequency Key 7 Measurement Level Key 9 Model Number 11 D Q 6 ESR Function Key 13 Open Calibration Key 15 Relative Key 17 Short Calibration Key 19 Remote Function Key 21 Power Switch 23 AC Power 25 A Terminal 14 Secondary Parameter Display DCA ACA Function Key LCUR Terminal Range Hold Key LPOT Terminal
35. urement mode If the serial mode Cs is selected the D Q and ESR can be shown on the secondary display If the parallel mode Cp is selected only the and be shown the secondary display The following shows some examples of capacitance measurement The testing level and frequency can be selected by pressing the 2 2 7 Press the The testing level and frequency can be selected by pressing the 16 L C Z DCR gt GOBI 0063 IB ID 369 Frequency Hz Test Level V Frequency Hz Test Level V Inductance Measurement Level key Freq key respectively key to select Ls or Lp mode for measuring the inductance in serial mode or parallel mode If the serial mode Ls is selected the D and ESR can be shown on the secondary display If the parallel mode Lp is selected only the D and Q can be shown on the secondary display The following shows some examples of inductance measurement Lp 0361 6894 Frequency Hz Test Level V Frequency Hz Test Level V Level key and Freq key respectively 3 Operation Modes There are four operation modes in the 889B They are Normal Binning Remote and Remote Binning modes By pressing the Remote button users can select one of the 4 operation modes above Normal Mode
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