Instrument Function
R&S
®
SMU200A
236Operating Manual 1007.9845.32 ─ 15
"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 569
AM Depth
Sets the modulation depth in percent.
SCPI command:
[:SOURce<hw>]:AM[:DEPTh] on page 568
LF Gen Frequency
(Source Internal only)
Sets the frequency of the LF generator.
This setting affects all analog modulations which use the LF generator as the internal
modulation source.
With two-path instruments, the setting affects both paths.
SCPI command:
[:SOURce]:LFOutput:FREQuency on page 740
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 568
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 mod-
ulations AM, FM and PhiM.
SCPI command:
[:SOURce<hw>]:AM:EXTernal:COUPling on page 568
AM Input Connector
Displays the modulation input. The display only appears in the case of external modula-
tion.
SCPI command:
n.a.
External Input Impendance
(Source External only)
Selects the impedance for external feed via the EXT MOD input.
Selection 50 Ohm and high (>100 kOhm) is available.
RF Signal and Analog Modulations - RF Block
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