Instrument Function
R&S
®
SMU200A
357Operating Manual 1007.9845.32 ─ 15
Modulation - CW Switching
The "Modulation <=> CW Switching" section is used to enable switching the signal
between modulated and unmodulated.
State Mod - CW - Digital Modulation
Enables switching between a modulated and an unmodulated signal.
Switching is carried out by a control signal (CW) that is defined internally in the control
list or supplied from an external source via a user-defined input.
SCPI command:
[:SOURce<hw>]:BB:DM:SWITching:STATe on page 624
Source Mod - CW - Digital Modulation
Selects the CW control signal for switching between a modulated and an unmodulated
signal.
"Internal"
The CW signal in the control list is used for the control.
The internal signal can be output on one of the user interfaces.
"External"
The control signal on the CW pin of the AUX I/O connector is used.
For two path instruments, path A and B.
SCPI command:
[:SOURce<hw>]:BB:DM:SWITching:SOURce on page 624
Filter
The filter is set in the Filter section.
Filter - Digital Modulation
Selects the baseband filter (see chapter 5.8.3.4, "Baseband Filter - Custom Digital
Mod", on page 345).
SCPI command:
[:SOURce<hw>]:BB:DM:FILTer:TYPE on page 638
Filter Parameter - Digital Modulation
Sets the filter parameter.
The filter parameter offered ("Roll Off Factor" or "B x T") depends on the currently selected
filter type.
SCPI command:
[:SOURce<hw>]:BB:DM:FILTer:PARameter:APCO25 on page 637
[:SOURce<hw>]:BB:DM:FILTer:PARameter:COSine on page 637
[:SOURce<hw>]:BB:DM:FILTer:PARameter:GAUSs on page 637
[:SOURce<hw>]:BB:DM:FILTer:PARameter:PGAuss on page 637
[:SOURce<hw>]:BB:DM:FILTer:PARameter:RCOSine on page 637
[:SOURce<hw>]:BB:DM:FILTer:PARameter:SPHase on page 637
Cut Off Frequency Factor - Digital Modulation
(available for filter parameter Lowpass only)
Baseband Signal - Baseband Block
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