Hioki 3511-50, Instruction Manual, Page: 35 / 140

23
________________________________________________________________________________________________________________
3.8 Short Circuit Compensation
________________________________________________________________________________________________________________
NOTE
3.8.1 Performing Short Circuit Compensation
Possible
Not possible
Metallic plate
Metallic wire
3.8 Short Circuit Compensation
With short circuit compensation, it is possible to reduce the influence of the
residual impedance of the test cables and thereby to enhance the accuracy of
measurement. It is effective for test samples whose impedance is relatively
low.
With short circuit compensation set, compensated values for 120 Hz and 1
kHz are input. These are unrelated to test frequency setting conditions.
The testing accuracy specified in the specification of the 3511-50 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.
Compensation is possible for the impedance range of 1 k
Ω
or less.
Procedures
(1) A shorting bar is used. This shorting bar is for short circuiting together
the ends of the test leads. Use an object whose impedance is as low as
possible.