Instrument Function
R&S
®
SMBV100A
192Operating Manual 1407.6062.32 ─ 08
"External"
Selects the external source.
The external signal is input via the EXT MOD connector.
"Intern +
Extern"
Selects the internal and external source at the same time. This setting
enables two-tone AM modulation.
SCPI command:
[:SOURce<hw>]:AM:SOURce on page 495
AM Depth
Sets the modulation depth in percent.
Note: With two-tone modulation, observe that the set modulation depth is valid for both
signals and the sum modulation depth is determined by doubling the set modulation
depth. This results in overmodulation if the maximal value for modulation depth is excee-
ded (see data sheet).
SCPI command:
[:SOURce<hw>]:AM[:DEPTh] on page 494
LF Gen Frequency
Sets the frequency of the LF generator.
This setting affects all analog modulations which use the LF generator as the internal
modulation source.
SCPI command:
[:SOURce]:LFOutput:FREQuency on page 648
LF Gen Shape
Selects the waveform shape of the LF signal.
SCPI command:
[:SOURce]:LFOutput<ch>:SHAPe on page 655
AM Sensitivity
(Source External only)
Displays the input sensitivity of the EXT MOD input in %/V.
The modulation depth entered under "AM Depth" is reached with 1 volt modulation of the
input.
SCPI command:
[:SOURce<hw>]:AM:SENSitivity on page 495
AM External Coupling
(Source External only)
Selects the coupling mode (AC or DC) for external feed.
Note: Coupling for external feed via input EXT MOD can be set independently for all
modulations with external source.
SCPI command:
[:SOURce<hw>]:AM:EXTernal:COUPling on page 494
RF Signal and Analog Modulations - RF Block
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