Remote Control Commands
R&S
®
SMB100A
339Operating Manual 1407.0806.32 ─ 21
Parameters:
<Mode> NORMal | LNOise | HDEViation
NORMal
Provides full setting range of modulation bandwidth and FM
deviation.
LNOise
Provides phase noise and spurious characteristics close to CW.
The range for modulation bandwidth and FM deviation is
reduced (see data sheet).
HDEViation
Provides full setting range for FM deviation. The range of modu-
lation bandwidth is reduced (see data sheet).
*RST:
NORM
Example:
FM:MODE NORM
selects normal mode for external frequency modulation.
Manual operation: See "FM Mode" on page 203
[:SOURce<hw>]:FM:SENSitivity?
Queries the input sensitivity of the externally applied signal for frequency modulation.
The returned value reports the sensitivity in Hz/V. It is assigned to the voltage value for
full modulation of the input signal.
The sensitivity depends on the set [:SOURce<hw>]:FM[:DEViation].
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
sensitivity is precisely 5000 Hz/V.
Usage: Query only
Manual operation: See "FM Sensitivity" on page 204
[:SOURce<hw>]:FM:SOURce <Source>
Selects the modulation signal source for frequency modulation.
SOURce Subsystem
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