Keysight E4981A - Page 45

Keysight E4981A 120 Hz/1 kHz/1 MHz Capacitance Meter 45
Setting Up Measurement Conditions and Display
Setting Up Display
You can select from two modes in the deviation measurement mode: displaying
the deviation as it is or displaying the deviation as a percentage relative to the
reference value. To set the deviation measurement mode, use the following
commands.
• :CALCulate1:MATH:EXPRession:NAME on page 189
• :CALCulate2:MATH:EXPRession:NAME on page 192
To set the reference value in the deviation measurement mode, use the
following command.
• :DATA[:DATA] on page 208
The table below shows the relationship between the setups using the above
commands and the values displayed as the measurement result.
Where, and are:
: Measured value
: Reference value (set using the :DATA[:DATA] command)
Setup of
:CALCulate1:MATH:S
TATe or
:CALCulate2:MATH:S
TATe
Setup of
:CALCulate1:MATH:EX
PRession:NAME or
:CALCulate2:MATH:EX
PRession:NAME
Value displayed as the
measurement result
OFF ———
ON
DEV
PCNT
Meas
Meas Ref–
Meas Ref–
Ref
-----------------------
100×
Meas
Ref
Meas
Ref
The measured value read out by the SCPI command is a calculation result
based on the above setup. For judgment in the comparator function, the
measurement result is used as is regardless of the setup. (Refer to the data
processing flow in the Operation Manual.)