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Component measuring guidelines – GW Instek LCR-800 Series User Manual

Page 13

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GETTING

STARTED

25

Warning

If the test failed, ensure your cables or test fixtures are
open and not shorted. Ensure R.H is OFF. After
inspection try again.

Short circuit

The short test will calibrate the short circuit
impedance of the cables or test fixtures. This is
used for low impedance measurements

4. Short the cables or test fixtures

using a short thick copper wire
if necessary.

5. Press R/L offset in the offset menu.

6. Wait for the calibration to finish. If the SHORT

TEST was successful the following message is
displayed.

Warning

If the test failed, ensure your cables or test fixtures
are shorted. Ensure R.H is OFF. After inspection
try again.

7. Press EXIT when both tests are OK.

Warning

Failure to pass both tests will result in erroneous
measurements.

LCR-800

User

Manual

26

Component Measuring Guidelines

Background

For measuring Impedance, Capacitance,
Inductance, and Resistance, series or parallel
equivalent circuit models are available. Usually a
component manufacturer will specify how a
component should be measured and at what
frequency. If not, use the guidelines below. Select
the equivalent circuit and frequency according to
the component value. For more information about
equivalent circuit models and theory see page 124.

General Inductors

Inductors have always traditionally been
measured in series equivalent circuits. For large
inductors a lower test frequency yields more
accurate results. For small inductors, higher
frequencies are more accurate.

Test

Frequency

Expected Inductance

<10uH 10uH~1mH 1mH~1H >1H

0.1kHz

Series

1kHz

Series

10kHz

Series

100kHz Series