Source:fm Subsystem - R&S SMB100A Operating Manual

®
R&S SMB100A

7.13.3 SOURce:FM Subsystem

The FM subsystem contains the commands for checking the frequency modulation.
Characteristics which are valid for all modulations and the LF Output are configured in
the SOURce:LFOutput subsystem (e.g. frequency). The external signal is input at the
MOD EXT connector.
For information about the required options, see
(FM)",
[:SOURce<hw>]:FM[:DEViation]
[:SOURce<hw>]:FM:EXTernal:COUPling
[:SOURce<hw>]:FM:EXTernal:DEViation
[:SOURce<hw>]:FM:INTernal:DEViation
[:SOURce<hw>]:FM:MODE
[:SOURce<hw>]:FM:SENSitivity?
[:SOURce<hw>]:FM:SOURce
[:SOURce<hw>]:FM:STATe
[:SOURce<hw>]:FM[:DEViation] <Deviation>
Sets the deviation of the frequency modulation signals in Hz. The maximum deviation
depends on the set RF frequency and the selected modulation mode (see data sheet).
Parameters:
<Deviation>
Example:
Manual operation:
[:SOURce<hw>]:FM:EXTernal:COUPling <Coupling>
Selects the coupling mode for the external frequency modulation signal.
Parameters:
<Coupling>
Example:
Manual operation:
Operating Manual 1407.0806.32 ─ 21
on page 202.
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float
Range:
Increment: 0.01
*RST:
FM 2E3
sets a 2 kHz deviation to the modulation signal.
See "FM Deviation"
AC | DC
AC
Uses only the AC signal component of the modulation signal.
DC
Uses the modulation signal as it is, with AC and DC.
*RST:
FM:EXT:COUP AC
selects the coupling mode AC for the external frequency modu-
lation signal.
See "FM External Coupling"
Chapter 5.4.3, "Frequency Modulation
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0 to dynamic
1000
on page 204
AC
on page 205
Remote Control Commands
SOURce Subsystem
337