Chapter 2 Operation Manual
Contents
1. a L CHANGZHOU pF DISPLAY QD Q3 OH pF MQ TONGHUI ELECTRONIC CO LTD 10 15 9 8 E t cs TH2812C LCR Meter 10kHz 100Hz mT UNKNOWN T 7 S 1 TH2811C TH2812C Front Panel Figure 1 Figure 1 2 TH2811C TH2812C Rear Panel Table 1 4 Rear Panel Description Dee as RES mama ds mi Name iate Record manufacture date and sequence Receptacle AC power cord receptacle Fuse Holder Fuse 1A 1 5 Operation Environment The meter is basically suitable for most operation environment but user should keep the meter away from strong electromagnetic field in order to get better measuring performance Chapter 2 Operation Manual 2 1 Considerations Inspect carefully whether the contents of the shipment matches the shipping packing list It is necessary for the user to read carefully the operation manual before operating the instrument or operate under the direction of a skilled person in order to avoid beat all problem when operating the instrument The 3 wire power cord should be properly connected to AC Receptacle on the rear panel Before connecting the 3 wire power cord between the unit and AC power make sure that the fuse should be in accordance with the power source always use an outlet which has a properly connected protection ground Tightly connect the test fixture o2. 4 eet eter te e e o ee 9 2 1 Considerations enciende Hv RE UR ERE ERRARE 9 2 2 Operation Steps nene er E e ETE RUE YS 9 2 2 1 ehe itii ote vertens 9 22 2 GConnectthe DUT ee Pr E SU YR FORE PER 10 2 2 3 Measuring conditions esssssseeenneeeee 10 2 2 3 1 Frequency s M HM HE ee E ies ha 10 2 2 3 2 Display Range Range Hold 10 2 2 3 3 Equivalent circuit mode essere 10 2 2 3 4 Correction f nction coe dete ode eode 11 Chapter3 Contents amp Warranty eene 13 3 1 etie det o HR Gb RET EROR Ans 13 3 2 Warranty sciente Gee equitem 13 Chapter 1 Overview 1 1 1 2 General TH2812C TH2811C LCR Meter is a component parameter test instrument based on micro processor which can be used for measuring inductance L capacitance C resistance R quality factor Q and dissipation factor D With a basic accuracy of 0 2596 and five digit display resolution TH2812C TH2811C can provide high quality and reliability measurements TH2812C TH2811C can fulfill the measurement need of various components in factories colleges and institutes etc The instrument can be used for a long period without frequent calibration by using the advanced measuring principle and five terminal measuring tec
3. 2 6 Test speed 5 meas sec 1 2 7 Temperature amp Humidity Temperature 0 C 40 C Humidity 8596 RH 1 2 8 AC Power Line voltage 220 V 10 50Hz 5 Power consumption lt 20W 1 2 9 Dimensions amp Weight Dimensions 330mmx100mmxx310mm LxWxH Weight 3 5kg 1 3 Functions 1 3 1 Measurement Parameter LCR Primary parameters L C R can be selected by LCR key Primary parameters are displayed with five digit resolution Secondary parameters Q and D are displayed with four digit resolution There are three kinds of combinations of Primary and secondary parameters listed as follows C D L Q R Q 1 3 2 Equivalent Circuit Mode EQUI Serial circuit mode SER parallel circuit mode PAR 1 3 3 Range Hold HOLD Range hold mode is suitable for mass measurement it will improve test speed 1 3 4 Correction Function CLEAR The instrument provides Short and Open correction capability so display results will be automatic compensated with pre measured leads resistance and stray reactance of testing terminals 1 3 5 Protection against charged Capacitor The instrument is specially designed against electrical shock for example insulated the capacitor under test from signal source circuit unit and current absorbing circuit So it will efficiently reduce damages of charged capacitor Warning Do not apply DC voltage or current to the UNKN
4. and LS are shorted separately at the end of DUT Test leads of DUT device under test should be kept clean in order to keep better touch between the text leads and DUT 2 2 3 Measuring conditions Set up the measurement conditions of the instrument according to the measurement requirements of DUT after power up 2 2 3 1 Frequency User should choose proper measuring frequency according to measuring requirements and real use of DUT press FREQ key to select a testing frequency 100Hz 120Hz 1kHz for TH2812C 100Hz 1kHz 10kHz for TH2811C 2 2 3 2 Display Range Range Hold Primary parameters are displayed in 5 digit resolution Press LCR key to select the primary parameters L C and R Primary parameter units are as follows L gH mH H C pF nF uF R MO TH2812C TH2811C LCR Meter has 3 measurement ranges for each range there is a high precision standard range resistor Different range resistor has different measurement range the 3 measurement ranges make up of the whole measurement range of the instrument Press key to the ON status the measurement range will be fixed at the current measurement range Range hold function is recommended when measuring batch components of the same specification When range hold is in OFF status the instrument will select a correct range automatically for the device under test according to the impedance value Only when the DUT is measured in the correct range
5. equivalent circuit mode is the appropriate choice The equivalent circuit mode can also be selected according to the actual use of a component in a special circuit If a capacitor is used as a filter capacitor series circuit mode is the best choice If a capacitor is used in a LC oscillator then parallel circuit mode can be selected The values in the two different equivalent circuits can be converted to each other using the following formulas in Table 2 2 The values are different due to the quality factor Q or the dissipation factor D Here suffix s means series and suffix p means parallel Q Xs Rs D Rs Xs Xs 1 2nFCs Table 2 2 Parallel and series circuit mode Cp 1 1 1 D 2 2 2afC Rp uem C C 104 D C D 220 i e mue o Q Rp R 1 D D L 2 Rp Rp R RD 1 D L R 1 L 1 DE Lp Rp 29L R R D D L Inductor C Capacitor f Frequency R Resistor D Dissipation factor Q Quality factor Suffix s Series Suffix p Parallel 2 2 3 4 Correction function In order to improve measurement accuracy correction function will be used to eliminate automatically parasitic impedance and resistor of test leads on the test fixture and test cable all those impedance is added to DUT by series or parallel mode Correction function included short and open correction The instrument can store 2 groups of indepen
6. 812C TH2811C LCR Meter TH26001 test fixture TH26004 1 4 terminal Kelvin test clip leads TH26010 Gilded shorting plate Power cable Fuse Operation Manual QA Certificate Warranty Certificate Calibration report BHEHEHHEHEHEEESE A 3 2 Warranty Tonghui Electronic Co Ltd warrants this instrument to be free of maintenance for 1 year from date of shipment The user is responsible for repairing charges resulting from action of the user such as misuse improper wiring operation outside of specification improper maintenance or repair or unauthorized maintenance during warranty period
7. OPERATION MANUAL TH2812C TH2811C LCR Meter Contents Chapter 1 Overview e Lv bee ue O REPE SE 3 1 1 General eco ERA RERO UU e PI oe lend 3 1 2 Specifications oin RC nee eo ee eed 3 1 2 1 Measuring parameter sse 3 1 2 2 Measuring eene eene nnne 3 1 2 3 Display Range sce e RE ee Rd RL eS 3 1 2 4 Measurement Accuracy s sss eene enne nennen 4 1 2 5 Test signal voltage level seem 4 1 2 6 Testspeed oes eee e eee ive Ce 4 1 2 7 Temperature amp Humidity sess enne 4 1 2 8 AC vd alerts 4 1 2 9 Dimensions amp Weight sese 4 1 3 Functions eet HI ERR e OF DAT HORE 5 1 3 1 Measurement Parameter LOR _ 5 1 3 2 Equivalent Circuit Mode EQUI essen 5 1 3 3 Range Hold SEME 5 1 3 4 Correction Function CLEAR seen 5 1 3 5 Protection against charged 5 1 4 Front panel and rear panel sese 6 1 5 Operation Environment 8 Chapt r 2 Op ration Manuil
8. OWN terminals Doing so will damage the instrument Before you measure a capacitor be sure the capacitor is fully discharged 1 4 Front panel and rear panel Table 1 3 Front Panel Description Description Function C e eae a Brand and Model Primary Parameter ETE display Window 2 155 display Primary Parameter 3 ED indicators Indicator Primary Parameter i qs Unit indicator 3 LED indicators Second Parameter M Display Window a Cige display Second Parameter 2 LED indicators Indicator CLEAR Key HOLD Key Range hold key Select 100Hz 120Hz or 1kHz 10kHz o LCR key Select test parameters 10 Power switch HD HS LS LD Test terminals test terminals Ground terminal Display L C and R Indicates current measuring primary parameter Indicates current measuring primary parameter Unit Display D or Q Indicates current measuring second parameter Correction key Short and Open Correction In range hold mode the meter reaches the fastest measuring rate Select the measuring parameter Combination Select the measuring signal frequenc HD High current drive HS High potential sense LS Low potential sense LD Low current drive Press power switch to On position Power on Shielded Ground for device under test EQUI key Select a parallel or Series circuit mode for device under test A DISPLAY
9. dent correction data corresponding to 2 different frequencies It is not necessary to perform correction again if the frequency is switched between the two different frequencies that have been corrected and stored Perform correction again if the operation environment is changed such as Temperature Humidity and electromagnetism etc In order to perform reliable correction follow the following steps 1 Press key CLEAR is displayed in display window A and SH is displayed in display window B 2 Use the TH26010 short plate or low resistance wire to short the test terminals together 3 Press CLEAR key again to begin short correction When short correction is finished CLEAR is displayed in display window A and is displayed in display window B 4 Remove the DUT and leave the test terminals open 5 Press CLEAR key once again to begin open correction When open correction is finished the instrument returns back to the measurement state Notice If test terminals are not correctly shorted or opened reliably the instrument will not perform open or short correction correctly it will directly exit the correction operation and return to the measurement state Chapter3 Contents amp Warranty 3 4 Contents The contents of the shipment should be as listed as follows If the contents are incomplete if there is mechanical damage or defeat please notify our company DESCRIPTION QUANTITY TH2
10. hnology In order to acquire high measurement accuracy open and short correction function can be performed to eliminate the test stray reactance and leads resistance of test terminals User can select a common test fixture or test leads for measurement Technical specifications operation of TH2812C TH2811C LCR Meter are described in this manual Specifications 1 2 1 Measuring parameter Inductance L Capacitance C Resistance R Quality Factor Q Dissipation Factor D 1 2 2 Measuring Frequency TH2812C 100Hz 120Hz and 1kHz 0 02 TH2811C 100Hz 1kHz and 10kHz 0 02 1 23 Display Range Table 1 1 Display Range parameter Measuring Range 100Hz 120Hz 1 9999H 1kHz 0 1uH 999 9H 10kHz 0 01uH 99 99H 100Hz 120Hz 1pF 19999yF 1kHz 0 1pF 1999 9uF 0 01pF 19 99uF 0 1mQ 99 99 1 2 4 Measurement Accuracy Table 1 2 Accuracy table parameter Frequency 100 120Hz 1pH 0 25 1 L 2000H 2mHIL 1 1 Q 0 1pH 0 25 1 L 200H 0 2mHIL 1 1 Q 0 01pH 0 25 1 L 10H 0 04mHIL 1 1 Q 100 120Hz 1pF 0 25 1 1000pF Cx Cx 1000UF 1 Dx 0 1pF 0 25 1 100pF Cx Cx 100uF 1 Dx 0 01pF 0 25 1 20pF Cx CX AuF 1 Dx 1mMQ 0 25 1 R 2MQ 2Q R 1 0 100 120 1kHz 0 020 0 25 Qx 1 Qx 10kHz 0 020 0 3 Qx 1 Qx 100 120 1kHz 0 0010 1 Dx 2 10kHz 0 0015 1 Dx 1 2 5 Test signal voltage level 0 3Vrms 10 Open circuit 1
11. r test cable to the front panel terminals marked with HD HS LS and LD Short HD with HS and LD with LS at the end of DUT when test cable is used Connect shield of the device under test to the instrument ground terminal on the front panel if the device under test has a shield terminal The instrument can be operated in the environment specified in the specification specially test cable of the instrument should be free from strong electromagnetic field to prevent disturbance to measuring results User should turn OFF the POWER and remove power plug after a test is finished or when the instrument must be opened for eliminating error Keep the test fixture test cable and pins of DUT clean in order to maintain a reliable connection between the test fixture and the DUT 2 2 Operation Steps 2 2 1 Power Insert power plugs into the power receptacle on the rear panel and turn on the power Switch then display window will display measurement results continuously the initial instrument setup will be displayed as follow Table 2 1 Initial setup of the instrument Frequency 1kHz Mode Serial Lock OFF LCR C D Warm up the instrument about 10 minutes the instrument will reach a warm balance Then you can perform the normal measurement 2 2 2 Connect the DUT Please choose the appropriate test fixture or test cable for measurement according to the current testing conditions At the same time make sure HD and HS LD
12. the measurement results will be displayed In range hold OFF status the meter will output the measurement result after a maximum of two measurements When range hold is ON the measurement range is fixed at the current range and measuring speed will reach up to 5 meas sec Life of relay units inside the instrument will be extended and instrument error rates will be reduced because the relays don t have to be switched in range hold mode Set range hold OFF and connect a DUT to the testing fixture After the instrument selects the correct range automatically and the measurement result is stable press HOLD key to set range hold ON Then the measurement range is fixed at the correct range you want 2 2 3 3 Equivalent circuit mode Press EUQI key to select the series or parallel equivalent circuit Quality Factor Q Dissipation Factor D is the same value in either equivalent circuit mode The actual capacitor resistor and inductor are not the ideal capacitor resistor and inductor Normally a component has the characteristics of the resistor and the reactor at the same time The actual component is composed of an ideal resistor and reactor ideal inductor or capacitor in series or parallel equivalent circuits Generally for low impedance component such as large capacitor or small inductor the series equivalent circuit mode should be used For high impedance component such as small capacitor or large inductor the parallel
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