Hioki Super megohm SM7110 - Page 76

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Canceling Capacitance of Measurement Fixture (Fixture Capacitance Open Correction Function)
4.11 Canceling Capacitance of Measurement Fixture
(Fixture Capacitance Open Correction Function)
Be sure to read “Before performing the open correction” (p. 14) beforehand.
This function measures the capacitance of a measurement xture with its terminals open. The
xture capacitance open correction function can reduce the impact of residual impedance of the
measurement xture (such as lead or xture) and improve the measurement accuracy.
• If the contact check function is set to [ON], always execute “xture capacitance open correction” before
measurement.
• When the open correction is executed once, [OPEN] is displayed on the front indicator of the instrument.
• Execute the xture capacitance correction again after changing any of the contact check settings.
1
Connect the measurement xture such as a measurement lead to the instrument.
Do not connect to any measured object to the measurement xture.
Procedure to display the settings screen: (Measurement screen) MENU key >
[C.CHK]
tab
2
Press the F2 key [EXEC].
The open correction is executed, acquiring the correction value.
The data acquired by executing “xture capacitance open correction” is saved even after the
instrument is turned o󰀨.
A capacitance of between 0.000 pF and 99.999 pF can be corrected.
3
Press the F2 key [OK].
A short-circuit between the INPUT and OUTPUT terminals will cause the xture capacitance
open correction to fail, displaying a result “NG.” Check a short-circuit between the terminals.