Keysight Technologies EPM-P Series Programming Manual page 69

Power Meter Remote Operation 1
If the measurement frequency does not correspond directly to a frequency in the
NOTE
sensor calibration table, the power meter calculates the calibration factor using
linear interpolation.
If you enter a frequency outside the frequency range defined in the sensor
calibration table, then the power meter uses the highest or lowest frequency
point in the sensor calibration table to set the calibration factor.
To find out the value of the calibration factor being used by the power meter to
make a measurement, use the query command:
[SENSe[1]]|SENSe2:CORRection:CFAC? The response may be an interpolated
value.
To find out the value of the reference calibration factor being used, use the
commands:
CALibration[1|2]:RCFactor?
Keysight EPM-P Series Programming Guide 69