Operating instructions

[SENSe:]ADEMod - Subsystem R&S ESCI
1166.6004.12 6.142 E-1
[SENSe:]ADEMod:FM:OFFSet? <result type>
This command calculates the FM offset of the currently available measurement data set. If averaging has
been activated before acquiring the data set (using [SENSe:]ADEMod:FM [:TYPE]), the averaged FM
offset over several measurements can be obtained as well by setting <result type> = AVERage.
The offset thus determined differs from that calculated in the command CALC:MARK:FUNC:ADEM
:FERR?, since using that command, for determination of the frequency deviation, the modulation is
removed by means of lowpass filtering, producing results that are different from those obtained by averaging.
Parameters: <result type>: IMMediate The current measurement results will be used for
calculating the FM offset
AVERage The measurement results that were averaged over
the given # of measurements will be used for
calculating the FM offset
Note:
If no average measurement was active during the last measurement sequence only the command
[SENSe:]ADEMod:FM:OFFSet? IMMediate will return a valid result (data to calculate the offset are
taken from the last measured data set).
[SENSe:]ADEMod:FM:OFFSet? AVERage will cause a query error in this case.
Examples: ADEM:SET 8MHz,32000,EXT,POS,-500,30 'Sets up demodulator
'parameters to execute
'30 measurements
ADEM:FM AVER,OFF,OFF 'Sets up FM results to
'do averaging
ADEM:AM OFF,OFF,OFF 'Sets up AM results to off
ADEM ON 'Switches on demodulator
INIT;*WAI 'Starts measurement and waits
'for sync
ADEM:FM:OFFS? IMM 'Reads FM offset of last
'measurement of the sequence
'of 30
ADEM:FM:OFFS? AVER 'Reads FM offset averaged
'over 30 measurements
Characteristics: *RST values: -
SCPI: device-specific
Mode:FM
This command is only available with option R&S FS-K7 (FM Demodulator).