Keysight E4981B User Manual page 105

Preparation for Accurate Measurement (Executing Correction)
Obtaining Correction Data
Measured data
The data for the LOAD correction can only be measured at the measurement
frequency set by the user (120 Hz, 1 kHz or 1 MHz) at the time of execution.
The result is set up as the data for normal operation when the multi-correction
function is OFF and as the data for multi-correction when the function is ON
(for the channel that has been selected at execution).
The table below summarizes how data is set up, depending on the setup at
execution.
Multi
correction
Measurement conditions during data measurement
The data for the LOAD correction is measured under the following
measurement conditions.
•
•
For other settings, such as averaging and trigger delay, the measurement
conditions set up at execution are used for measurement.
Auto Range during the measurement of Load Standard can be also be set
to ON/OFF by LOAD RNG under the CORRECTION softkey.
Keysight E4981B 120 Hz/1 kHz/1 MHz Capacitance Meter
Setup of
measurement
signal
frequency
120 Hz
1 kHz
OFF
1 MHz
120 Hz
ON 1 kHz
1 MHz
Measurement range mode: auto range mode or fixed range mode
Measurement time mode: 8
Data
120 Hz correction data and 120 Hz cable length
for normal operation
1 kHz correction data and 1 kHz cable length for
normal operation
1 MHz correction data, 1 MHz cable length, and
1 MHz frequency shift for normal operation
120 Hz correction data and 120 Hz cable length
for the channel selected at the time of
multi-correction measurement
1 kHz correction data and 1 kHz cable length for
the channel selected at the time of
multi-correction measurement
1 MHz correction data, 1 MHz cable length and
1 MHz frequency shift for the channel selected at
the time of multi-correction measurement
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