Instrument Function
R&S
®
SMU200A
245Operating Manual 1007.9845.32 ─ 15
In the upper section of the menu, the modulation source is selected and the modulation
switched on. The configuration of the selected external and/or internal modulation source
is performed in the lower section of the menu.
The menu differs according to the selected internal or external modulation source.
State
Activates/deactivates pulse modulation. Activation of pulse modulation deactivates ALC
and power ramping.
SCPI command:
[:SOURce<hw>]:PULM:STATe on page 773
Source
Selects the source for the pulse modulation signal.
"Internal"
Selects the internal source. The LF generator generates a rectangular
pulse with the set frequency.
"External"
Selects the external source.
The external modulation signal is input via the PULSE EXT connector.
SCPI command:
[:SOURce<hw>]:PULM:STATe on page 773
LFGen Frequency - Pulse Modulation
Sets the repetition frequency of the internal signal.
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
Pulse External Input Impedance
(Source External only)
Selects the impedance for external feed via the EXT MOD input.
Selection 50 Ohm and high (>100 kOhm) is available.
Note: This setting affects all analog modulations which use the external modulation
source.
SCPI command:
[:SOURce<hw>]:INPut:MODext:IMPedance on page 721
RF Signal and Analog Modulations - RF Block
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