The open correction is quite sensitive to noise -
both noise originating externally and induced
noise. Therefore, if open correction fails, you
should check the following points before starting
the correction process again:
Check that the test fixture or the test cables are
properly connected.
Check that not any test piece is connected to
the test fixture or the test cables.
During the correction process, be sure not to
disturb the fixture and the test cables or to
move your hand near them.
If the H/L test pole of the test fixture can be
adjusted, adjust the distance between the test
poles to the distance when measuring.
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