Instrument Function
R&S
®
SMBV100A
252Operating Manual 1176.8016.02 ─ 17
AM Depth
Sets the modulation depth in percent.
Note: With two-tone modulation, observe that the set modulation depth applies to 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
exceeded (see data sheet).
Remote command:
[:SOURce<hw>]:AM[:DEPTh] on page 589
LF Gen Freq
Sets the frequency of the LF generator.
This setting affects all analog modulations which use the LF generator as the internal
modulation source.
Remote command:
[:SOURce]:LFOutput:FREQuency on page 758
LF Gen Shape
Selects the waveform shape of the LF signal.
Note: The installed hardware determines the available settings. Use the Hardware
Config dialog to check the hardware the instrument is equipped with.
For information on the required hardware revision, refer to the release notes.
Remote command:
[:SOURce]:LFOutput:SHAPe on page 766
AM Sensitivity
Displays the input sensitivity of the externally applied modulation signal at the EXT
MOD input in %/V.
The modulation depth entered under AM Depth is achieved with 1 Volt modulation of
the input.
Remote command:
[:SOURce<hw>]:AM:SENSitivity? on page 590
AM External Coupling
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 using the external modulation signal.
"AC"
Disconnects the DC voltage component and uses only the AC com-
ponent of the modulation signal.
"DC"
Uses the modulation signal with both components, AC and DC.
RF Block
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