CEM DT-9935 Instruction Manual
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CEM DT-9935 Instruction Manual

Dual display lcr meter
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  • Page 2: Table Of Contents

    Dual Display LCR Meter Instruction Manual Page Contents ......... Safety Summary ........Safety Guidelines ........Functional description .......... 3-1. Introduction ..........3-2. Features ........Front Panel Overview ...... 4-1. Front Panel Display Descriptions ........Powering Instrument ........5-1. Installing Battery ........

  • Page 3: Safety Summary

    Dual Display LCR Meter Instruction Manual 1.Safety Summary The following safety precautions apply to both operating and maintenance personnel and must be observed during all phases of operation, service, and repair of this instrument. Do Not Operate In an Explosive Atmosphere Do not operate the instrument in the presence of flammable gases or fumes.

  • Page 4: Safety Guidelines

    Dual Display LCR Meter Instruction Manual 2.Safety Guidelines To ensure that you use this device safely, follow the safety guidelines listed below: • This meter is for indoor use, altitude up to 2,000 m. • The warnings and precautions should be read and well understood before the instrument is used.

  • Page 5: Functional Description

    Dual Display LCR Meter Instruction Manual 3.Functional Description 3-1 Introduction The LCR meter could measure Inductance/Capacitance/ Resistance with secondary parameters including dissipation factor (D), quality factor(Q), phase angle(θ), equivalent series/parallel resistance(ESR or Rp). The meter is fully auto ranging operation for AC impedance &...

  • Page 6: Front Panel Overview

    Dual Display LCR Meter Instruction Manual Rs:Serial Resistance Rp:Parallel Resistance • Second Parameter Display: θ :Phase Angle ESR:Equivalence Serial Resistance D:Dissipation Factor Q:Quality Factor 4.Front Panel Overview HOLD Cal APO A u t o LCR Range Ls Lp Cs Cp Rs Rp Sorting Tol 0.12 05% 80%...

  • Page 7: Front Panel Display Descriptions

    Dual Display LCR Meter Instruction Manual 4-1 Front Panel Display Descriptions 1.LCD Display 2.Mode (Auto LCR / L / C / ACR / DCR) selection button 3.Calibration mode selection button 4.Sorting mode button 5.Secondary Display mode (for dissipation factor(D), quality factor (Q), phase angle (θ), equivalent series resistance (ESR), equivalent parallel resistance(Rp) measurement) selection and the modify sorting value (...

  • Page 8: Powering Instrument

    Dual Display LCR Meter Instruction Manual 5.Powering Instrument Before beginning to operate the instrument, a power source is necessary for it to turn on. Installing Battery 5-1 Installing Battery The LCR meter use battery to provide power to the instrument so that it can be portable.

  • Page 9: Operation Instructions

    Dual Display LCR Meter Instruction Manual 6.Operation Instructions ◆" Push key function allowed to be active will be marked as " Keypads FUNC HOLD Dqθ S/P BKLIT SORT FREQ REL% ◆ ◆ ◆ ◆ AUTOLCR ◆ ◆ ◆ ◆ ◆ ◆...
  • Page 10 Dual Display LCR Meter Instruction Manual • Backlight When user push the button, the backlight will be active. Push the key again to disable the backlight. When the backlight is active to last for 60 seconds, the backlight will be disabled automatically.
  • Page 11 Dual Display LCR Meter Instruction Manual (DUT) HOLD Cal APO Auto LCR Range Ls Lp Cs Cp Rs Rp Sorting Tol 0.12 05% 80% 12 0 10 0K Hz 100% Digital LCR Meter FUNC SETUP SORTING ENTER FREQ HOLD Discharge Capacitor Before Testing GUARD On all inputs GUARD...
  • Page 12 Dual Display LCR Meter Instruction Manual Hold mode • The data hold function allows the user to freeze the display when pressed,holding the measured value until data hold is turned off. Turn On Data Hold To use data hold, press the button once.
  • Page 13 Dual Display LCR Meter Instruction Manual after push CAL key again. OPEN ready means the input sockets or terminals have nothing connected SHORT ready means put a shorting bar or a short piece of conductive metal (i.e. paper clip) across the "+" and "-" input sockets or terminals.
  • Page 14 Dual Display LCR Meter Instruction Manual The setting process: → → → range setting(use reference value setting (use SETUP ENTER → → → / / ) tolerance setting(use sorting mode ENTER ENTER → → The tolerance range setting selection: +0.25% +0.5% +1% →...

  • Page 15: Accuracy Specification

    Dual Display LCR Meter Instruction Manual 6-1 Accuracy Specification Notes: • Measurement performed at the test socket. • Measurements performed after correct open and short calibration. • DUT and test leads must be properly shielded to guard if necessary. • Q value is the reciprocal of DF.
  • Page 16 Dual Display LCR Meter Instruction Manual Frequency = 10kHz Range Resolution Lx Accuracy DF Accuracy Measurement Mode 200.00uH 0.01uH 1.8% 10d ± 1.8% 50d ± Series 2000.0uH 0.1uH 1.5% 10d ± 1.5% 50d ± Series 20.000mH 1.2% 10d ± 1.2% 50d ±...
  • Page 17 Dual Display LCR Meter Instruction Manual Frequency = 1kHz Range Resolution Cx Accuracy DF Accuracy Measurement Mode 2000.0pF 0.1pF 3.5% 15d ± 3.5% 50d ± Parallel 20.000nF 1.0% 10d ± 1.0% 50d ± 200.00nF 0.01nF 0.9% 10d ± 0.9% 50d ±...
  • Page 18 Dual Display LCR Meter Instruction Manual Resistance @ Ta =18 ~ 28 (De) Frequency = 100 Hz/120 Hz Range Resolution Rx Accuracy Measurement Mode 200.00Ω 0.01Ω 1.2% 10d ± 2.0000kΩ 0.1Ω 0.8% 5d ± 20.000kΩ 1Ω 0.9% 5d ± 200.00kΩ 0.01kΩ...
  • Page 19 Dual Display LCR Meter Instruction Manual Frequency = 100kHz Range Rx Accuracy Resolution Measurement Mode 20.000Ω 1mΩ 2.3% 10d ± 200.00Ω 0.01Ω 1.5% 5d ± 2.0000kΩ 0.1Ω 0.8% 20d ± 20.000kΩ 1Ω 0.8% 20d ± 200.00kΩ 0.01kΩ 1.5% 10d ± 2.000MΩ...

  • Page 20: Supplemental Information

    Dual Display LCR Meter Instruction Manual 7.Supplemental Information This section provides supplemental information for user consideration when operating the LCR meters.Some recommendations and explanations are provided to help aid in the use of some functions and features,in which can help the user gain optimal and accurate measurement results.

  • Page 21: Selecting Series Or Parallel Mode

    Dual Display LCR Meter Instruction Manual are used for applications such as filter chokes in power supplies, in which are typically operated at 60 Hz AC (in U.S.) with 120 Hz filter frequencies. In general,inductors below 2 mH should be measured at 1 kHz frequency while inductors above 200 H should be measured at 120 Hz.

  • Page 22: Accuracy Discrepancies

    Dual Display LCR Meter Instruction Manual Inductance For most inductance measurement, selecting series mode is the best. This is because in this mode, accurate Q (quality factor) reading can be obtained from reading low Q inductors and ohmic losses are significant. Though in some cases, parallel mode would be preferred.

  • Page 23: Guard Terminal

    Dual Display LCR Meter Instruction Manual Resistance When measuring resistance of devices,it is important to know that there are two types or ways of measurement.One type is DC resistance measurement. Another type is AC resistance measurement.The LCR meter provide both of types for measurement.When measuring a resistive component that is designed to be measured with DC, readings will be incorrect or inaccurate.Before using the meter to measure resistance,please...
  • Page 24 Dual Display LCR Meter Instruction Manual Rev.110525...

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