Chapter 4
Front-Panel Key and SCPI Command Reference
Measure
161
Front-Panel Key and SCPI Command
Reference
4.3.6 FM Deviation
Allows the user to switch to the FM Deviation measurement.
4.3.6.1 SCPI Remote Commands
:CONFigure:FMDeviation
:INITiate:FMDeviation
:FETCh:FMDeviation[n]?
:MEASure:FMDeviation[n]?
:READ:FMDeviation[n]?
Mode: MRECEIVE
Key Path:
Measure
Remote Command: :CONFigure:FMDeviation
Notes: This key invokes FM Deviation Measurement.
Example: :CONF:FMD
Index: n
<Mnemonic>
Results Returned
0 Returns unprocessed I/Q trace data, as a series of comma-separated trace points, in volts. The I
values are listed first in each pair, using the 0 through even-indexed values. The Q values are the
odd-indexed values.
not specified
or n = 1
Returns comma-separated scalar results, in the following order:
FM Deviation (Hz)
FM Deviation Ratio (–999 in Normal mode, Ratio: dB or % depending on Ratio Mode setting)
FM Ratio Reference Deviation (Hz)
Modulation Rate (Hz)
Modulation Distortion (%)
Modulation SINAD (dB)
Sample Time (seconds) is a floating point number representing the time between samples when
querying the demod trace (n=2)
Number of samples is the number of data points in the demod trace. It is used when querying the
demod trace (n=2).
2 Return demodulated waveform vs. time data, as a series of comma-separated trace points. The result
is a series of real numbers in Hz.
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