R&S FSL SENSe Subsystem (Analog Demodulation, K7)
1300.2519.12 6.311 E-11
Return values
ASCII Format (FORMat ASCII) or Binary Format (FORMat REAL,32); for details see "Formats
for returned values: ASCII format and binary format" on page 6.300. The ouput units are
described in "CALCulate<1|2>:MARKer<1...4>:PEXCursion" on page 6.63.
Example
ADEM:SET 8MHz,32000,EXT,POS,–500,30
Sets demodulator
ADEM:FM AVER,MAXH,MINH
Selects the FM results to be measured
ADEM:AM:REL WRIT,OFF,OFF
Selects the AM results to be measured
ADEM:FM:AFSP WRIT,OFF,OFF
Selects the AF spectrum results of the demodulated FM signal to be measured
ADEM ON
Switches the demodulator on
INIT;*WAI
Starts the measurement and waits for termination
FORM ASC
Selects output format
ADEM:FM:RES? AVER
Reads FM average result data
ADEM:FM:RES? MAXH
Reads FM maxhold result data
ADEM:FM:RES? MINH
Reads FM minhold result data
ADEM:AM:RES? WRIT
Reads current AM result data
ADEM:FM:AFSP:RES? WRIT
Reads current AF spectrum result data of demodulated FM signal
Characteristics
*RST value: –
SCPI: device–specific
Mode
ADEMOD
[SENSe:]ADEMod:FM:OFFSet?
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[:TDOMain][:TYPE], the averaged FM offset over several
measurements can also be obtained by setting <result type> = AVERage.
The offset thus determined differs from the one calculated by the
CALCulate<1|2>:MARKer:FUNCtion:ADEMod:FERRor[:RESult<1...6>?] command
since, 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.
Parameter
<result type>
IMMediate The current measurement results will be used for calculating the FM
offset
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