Remote Control Commands
R&S
®
SMB100A
302Operating Manual 1407.0806.32 ─ 13
[:SOURce<hw>]:FM:SENSitivity?
The command is only effective if the external modulation source is selected
(SOUR:FM:SOUR EXT). The returned value depends on the modulation deviation set-
ting (SOUR:FM:DEViation). This value is assigned to the voltage value for full mod-
ulation of the input signal.
Return values:
<Sensitivity> float
Range: 0 to max
Increment: 0.01
Example:
FM:DEV 5E3
sets a modulation deviation of 5 kHz.
FM:SENS
queries the input sensitivity at the external modulation input.
Response: 5E3
since the voltage value for full modulation is 1V, the resulting sen-
sitivity is precisely 5000Hz/V.
Usage: Query only
Manual operation: See "FM Sensitivity" on page 174
[:SOURce<hw>]:FM:SOURce <Source>
The command selects the modulation source for frequency modulation. Internal and
external modulation source can be selected at the same time.
Parameters:
<Source> INTernal | EXTernal | INT,EXT
INT
INT is the internal modulation source which is defined with com-
mand FM:SOURce:INTernal and configured in the
SOURce:LFOutput subsystem.
EXT
The external signal is input at the MOD EXT connector.
*RST: INTernal
Example:
FM:SOUR INT
selects the internal modulation source.
Manual operation: See "FM Source" on page 173
[:SOURce<hw>]:FM:STATe <State>
The command activates/deactivates frequency modulation.
Activation of FM (FM:STAT ON) deactivates phase modulation.
SOURce Subsystem
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