Remote Control Commands > SOURce Subsystem > SOURce:FM Subsystem > [:SOURce<hw>]:FM:SOURce
[:SOURce<hw>]:FM:SOURce <Source>

Selects the modulation signal source for frequency modulation.

You can use both, the internal and an external modulation signal at a time.

Parameters:
<Source>
INTernal| EXTernal | INT,EXT | EDIGital
INT

Uses the internally generated signal for modulation. To configure the frequency, use the commands of the "SOURce:LFOutput Subsystem" subsystem.

With command [:SOURce<hw>]:FM:INTernal:SOURce you can select the internal signal source.

EXT

Uses an externally applied modulation signal.

The external analog signal is input at the FM/PM EXT connector. The external digital signal is input at the AUX I/O connector (selection EDIGital).

INT,EXT

Uses both, the internal and external modulation signals.

EDIGital

Uses an externally applied digital modulation signal.

*RST:INT
Example: FM:SOUR INT

selects the internal modulation source.

Options: Option R&S SMA-B20 or -B22
Manual operation: See "FM Source"

 


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