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CEM DT-9935, Instruction Manual

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Dual Display LCR Meter Instruction Manual

Contents

Safety Summary
Safety Guidelines
Functional description

Introduction
Features

Front Panel Overview

Front Panel Display Descriptions

Powering Instrument

Installing Battery
Low Battery Indication

Operation Instructions

Accuracy Specification

Supplemental Information

Selecting Test Frequency
Selecting Series or Parallel Mode

Accuracy Discrepancies
Guard Terminal

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Summary of Contents for DT-9935

Page 1: ......

Page 2: ...Front Panel Display Descriptions Powering Instrument Installing Battery Low Battery Indication Operation Instructions Accuracy Specification Supplemental Information Selecting Test Frequency Selecting Series or Parallel Mode Accuracy Discrepancies Guard Terminal 1 2 3 3 1 3 2 4 4 1 5 5 1 5 2 6 6 1 7 7 1 7 2 7 3 7 4 3 4 5 5 5 6 7 8 8 8 9 15 20 20 21 22 23 ...

Page 3: ...ent Return the instrument to distributor for service and repair to ensure that safety features are maintained and statements such as the following examples denote a hazard and appear throughout this manual Follow all instructions contained in these statements A statement calls attention to an operating procedure practice or condition which if not followed correctly could result in injury or death ...

Page 4: ...atteries Do not measure a capacitor that is not fully discharged Connecting a charged or partially charged capacitor to the input terminals will damage the instrument When measuring within a circuit the circuit must be de energized before connecting the test leads When used in a dusty environment the instrument should be wiped and cleaned regularly Do not leave the instrument exposed to direct hea...

Page 5: ...test type Components could be measured in series or parallel mode according to the DUT impedance automatically Dual LCD display Auto LCR smart check and measurement Series Parallel modes are selectable Ls Lp Cs Cp with D Q 3 1 Introduction Features 3 2 θ ESR parameters Support DCR mode 200 00Ω 200 0MΩ Five different test frequency are available 100 120 1k 10k 100k Hz est AC signal level 0 6mVRMS t...

Page 6: ...verview 6 Dual Display LCR Meter Instruction Manual Discharge Capacitor Before Testing D Q ESR SER PAL REL FREQ HOLD SORTING ENTER CAL FUNC APO Digital LCR Meter 0 20 40 60 80 100 GUARD GUARD GUARD On all inputs 30V MAX HOLD Cal APO Auto LCR Range Ls Lp Cs Cp Rs Rp DCR Sorting Tol 0 1205 80 120 100K Hz ESR RP DQ Mk F F Mk P P SETUP 1 2 3 4 5 6 7 8 16 9 10 11 12 14 15 13 ...

Page 7: ...tion button 7 Relative mode and the modify sorting value button 8 Power ON OFF button 9 Enter modify sorting value mode button 10 APO Auto power off button 11 Modify sorting value button 12 Confirm and select the value user need to modify in sorting mode 13 Hold Display mode button 14 Parallel or Series measurement method selection and the modify sorting value button 15 Back light button 16 Input ...

Page 8: ...ndicated inside the battery compartment Be sure to insert the battery with matching polarity Place the battery compartment cover piece Place screw at the bottom of the cover piece and tighten down with a screw driver Push and hold down the button for 2 seconds to turn on the instrument The LCR meter has a battery indicator to notify the user when to replace battery When it displays the battery vol...

Page 9: ...be enabled or disabled APO function by press the APO button and the LCD will show whether the function is enable or not When all function keypads do not be pushed or impedance range switching detected within 5 minutes the system will launch the alarm buzzer beep at three times before the auto power off status During the period of alarm the meter will be kept in operation by pushing any function ke...

Page 10: ...y and enter to the L C R measurement mode automatically The secondary parameter will follow the L C R measurement It means that L Q C D R Q are combined in one group respectively When Auto L or Auto C mode is selected the impedance measurement is auto ranging The primary LCD display will show the inductance or capacitance of DUT device under test The secondary LCD display will show the quality or ...

Page 11: ...f component and the value of the component to be tested For more details refer to the SUPPLEMENTAL INFORMATION section When any L C R functional mode is selected the default measurement in series or parallel mode is auto selected and the AUTO segment will be shown on LCD display It depends on the total equivalent impedance measured If the impedance is larger than 10k Series Parallel mode select Ω ...

Page 12: ...n primary display and the Δ segment will be blinking The percentage range is 99 9 99 9 When the relative value is larger than double of reference value DREF the OL indication will be shown on the secondary display Press and hold downthe button for 2 seconds to exit the relative mode In order to improve the accuracy of high low impedance it is recommended to do OPEN SHORT calibration mode before me...

Page 13: ...omponents to be measured Insert the component to be used as the standard reference value Another words insert a known good component that will be used for testing against all other components Press button to enter to the sorting mode The sorting mode cannot be activated unless the meter senses a component is connected to either the input sockets or terminals When sorting mode is activated the refe...

Page 14: ...For large capacitors it may take longer periods of time for a full discharge Inserting a charged or partially charged capacitor into the meter s input sockets or terminals may produce an electric hazard and may also damage the instrument making it unusable When the button is pressed the test frequency will be changed sequentially There are five different test frequencies 100Hz 120Hz 1kHz 10kHz 100...

Page 15: ... 000mH 200 00mH 2000 0mH 20 000H 200 00H 2000 0H 20 000kH Resolution 1uH 0 01mH 0 1mH 1mH 0 01H 0 1H 0 001kH Lx Accuracy 1 5 10d 1 4 15d 1 5 15d 1 6 10d 1 3 10d 2 0 15d 2 5 15d DF Accuracy 1 5 50d 1 4 50d 1 5 50d 1 6 50d 1 3 50d 2 0 50d 2 5 0d Measurement Mode Series Series Series Parallel Parallel Parallel Range 2000 0uH 20 000mH 200 00mH 2000 0mH 20 000H 200 00H 2000 0H Resolution 0 1uH 1uH 0 01...

Page 16: ...1mH Lx Accuracy 2 5 10d 1 5 10d 1 3 15d 2 0 15d 2 5 15d DF Accuracy 2 5 50d 1 5 50d 1 3 50d 2 0 50d 2 5 50d Measurement Mode Series Series Series Parallel Parallel Frequency 100kHz Capacitance Ta 18 28 De Frequency 100 Hz 120 Hz O C Range 20 000nF 200 00nF 2000 0nF 20 000uF 200 00uF 2000 0uF 20 00mF Resolution 1pF 0 01nF 0 1nF 1nF 0 01uF 0 1uF 0 01mF Cx Accuracy 2 5 10d 1 2 10d 0 9 10d 1 0 15d 1 2...

Page 17: ...2000 0nF 20 000uF 200 0uF Resolution 0 01pF 0 1pF 1pF 0 01nF 0 1nF 1nF 0 1uF Cx Accuracy 3 0 8d 1 0 10d 0 9 10d 0 8 10d 1 0 8d 2 0 8d 4 5 15d DF Accuracy 3 0 50d 1 0 50d 0 9 50d 0 8 50d 1 0 50d 2 0 50d 4 5 50d Measurement Mode Parallel Series Series Series Series Frequency 100kHz Range 200 00pF 2000 0pF 20 000nF 200 00nF 2000 0nF Resolution 0 01pF 0 1pF 1pF 0 01nF 0 1nF Cx Accuracy 2 5 15d 1 0 8d ...

Page 18: ... 20 000Ω 200 00Ω 2 0000kΩ 20 000kΩ 200 00kΩ 2 0000MΩ 20 000MΩ 200 0MΩ Resolution 1mΩ 0 01Ω 0 1Ω 1Ω 0 01kΩ 0 1kΩ 1kΩ 0 1MΩ Rx Accuracy 1 2 10d 0 8 5d 0 8 3d 0 7 3d 1 0 5d 1 5 10d 1 8 10d 6 0 50d Measurement Mode Frequency 10kHz Range 20 000Ω 200 00Ω 2 0000kΩ 20 000kΩ 200 00kΩ 2 0000MΩ 20 00MΩ Resolution 1mΩ 0 01Ω 0 1Ω 1Ω 0 01kΩ 0 1kΩ 0 01MΩ Rx Accuracy 1 5 10d 0 8 10d 0 9 5d 0 8 3d 1 0 5d 2 5 10d 2...

Page 19: ... 1 5 5d 2 0 5d 2 5 5d Measurement Mode D value Accuracy Ta 18 28 De O C Freq Z 100 120Hz 1kHz 10kHz 100kHz 0 1 1Ω 0 030 0 030 0 030 0 040 1 10Ω 0 010 0 010 0 010 0 030 10 100kΩ 0 009 0 009 0 009 0 010 100k 1MΩ 0 010 0 010 0 009 0 010 1M 20ΜΩ 0 020 0 020 0 010 0 020 20Μ 200MΩ 0 040 0 090 0 040 0 040 Freq Z 100 120Hz 1kHz 10kHz 100kHz 0 1 1Ω 0 65 0 65 0 65 1 27 O O O O 1 10Ω 0 36 0 36 0 36 0 65 O O ...

Page 20: ...er frequency of 120 Hz is used Following this trend high test frequencies are best for testing very low capacitance components For large capacitance components low frequency would be optimal For example if the capacitance of the component is to be in the mF range than selecting 100 Hz or 120 Hz for test frequency would give much better results The results will also be obvious because if the same c...

Page 21: ...pacitive and inductive components Below are some recommendations to consider For most capacitance measurement selecting parallel mode is the best Most capacitors have very low dissipation factor high internal resistance compared to the impedance of the capacitance In these cases the paralleled internal resistance has negligible impact upon the measurement Though in some cases series mode would be ...

Page 22: ...tors it is always most desirable if the dissipation factor is low Electrolytic capacitors inherently have a higher dissipation factor due to their normally high internal leakage characteristics In some cases if the D dissipation factor is excessive measurement accuracy may degrade and even read out of specification Some inductors are intended to operate at a certain DC bias to achieve a certain in...

Page 23: ... terminal does not have to be used in all instances for the meter to make measurements But in some instances it is very useful Guard terminal generally serves two purposes If user is using test leads the guard terminal can be used to connect to the shielding of the test leads Doing so can be useful when making large resistive component measurements For example when measuring a 10 M 7 4 Ω resistor ...

Page 24: ...Dual Display LCR Meter Instruction Manual Rev 110525 ...

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