Hioki 3522-50, Instruction Manual

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4.7 Open Circuit Compensation
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NOTE
4.7.1 Control Screen Sequence
Press the key.
Press the key.
Select the compensation method
(ALL compensation or
SPOT compensation).
If setting has been completed normally, the
open circuit residual component and its
phase angle are displayed.
When compensation has been completed,
press the
key to return to the Initial
screen.
Open circuit compensation has been set.
Initial screen
Open circuit compensation screen
ALL
compensation
Compensation at all
test frequencies
SPOT
compensation
Compensation at one
test frequency only
Initial screen
Menu screen
4.7 Open Circuit Compensation
With open circuit compensation, it is possible to reduce the influence of the
floating impedance of the test cables and thereby to enhance the accuracy of
measurement. It is effective for test samples whose impedance is relatively high.
Open circuit compensation may be performed according to either of two methods:
ALL compensation
Compensation is performed at all the test frequencies.
SPOT compensation
Compensation is performed for one specified test frequency only.
The testing accuracy specified in the specification of the 3522-50 unit assumes
that open circuit compensation and short circuit compensation is being
performed, as appropriate.
When you have changed the test cables, be sure to perform compensation again.
Correct test values will not be obtained if you go on testing using the same old
compensation values which were obtained before the cable change.
During DC measurement, it is not necessary to perform open circuit compensation.
When performing compensation, make sure that there is no noise source nearby.
Noise may cause an error when performing compensation.
ex. Servo Motor, switching power source, high-voltage cable and etc.
Perform compensation in the state as close as possible to the actual one in
which the test sample will be measured.
The compensated value is preserved in the memory of the main unit even when
power is turned off.