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Chapter 1 213
GPIB Command Dictionary
MEASure subsystem
:AFRequency:DCFM <meas cmnd>
:AFRequency:DCFM?
These commands set/query the DC FM measurement. To use this
measurement, you must have the DC level measurement selected (see
MEAS:AFR:SEL on page 216), and you must be using the FM Demod
or FM Mod audio source (see AFAN:INP on page 59).
Syntax
MEAS:AFR:DCFM <meas cmd>
!See “Number Measurement Syntax” on page 283.
MEAS:AFR:DCFM? !returns a real value
Example
MEAS:AFR:DCFM:AVERage 4 !averages DCFM over 4 measurements
MEAS:AFR:DCFM? !returns the measured value
Screen/field equivalent
MEAS:AFR:DCFM? reads the DC Level (kHz) measurement field on
the AF ANALYZER screen when the AF Anl In field is set to FM Mod, or
FM Demod. This measurement is also displayed on the RF GENERATOR
and RF ANALYZER screens.