Rohde & Schwarz SMC100A - Source:input Subsystem; Source:lfoutput Subsystem

R&S SMC100A Command Description
1411.4060.32 6.49 E-1
SOURce:INPut Subsystem
The SOURce:INPut subsystem contains the commands for configuring the inputs for external pulse
modulation signals.
The instrument trigger setting influences all sweeps (Instrument Trigger).
Command Parameters Default
unit
Remark
[SOURce:]INPut:TRIGger:SLOPe POSitive | NEGative
[SOURce:]INPut:TRIGger:SLOPe POSitive | NEGative
The command sets the active slope of an externally applied trigger signal at the INST TRIG inputs
(BNC connector at the rear of the instrument). The setting is effective for both inputs at the same
time.
Example:
INP:TRIG:SLOP NEG
'the active slope of the external trigger signal at the INST TRIG inputs is the
falling slope.
*RST value Resolution Options SCPI
POSitive - Device-specific
SOURce:LFOutput Subsystem
This subsystem contains the commands for setting the LF signal source in CW and Sweep mode as
well as for analog modulations.
An LF sweep is set in several steps which are shown in the following example:
1. Set the sweep range.
LFOutput:FREQuency:STARt 4 kHz
LFOutput:FREQuency:STOP 10 kHz
2. Select linear or logarithmic sweep spacing.
LFOutput:SWEep[:FREQuency]:SPACing LIN
3. Set the step width and dwell time.
LFOutput:SWEep[:FREQuency]:STEP[:LINear] 100 Hz
LFOutput:SWEep[:FREQuency]:DWELl 20 ms
4. Determine the sweep mode.
LFOutput:SWEep:MODE AUTO
5. Determine the trigger.
TRIGger0:SOURce SINGle
6. Activate the sweep.
LFOutput:FREQuency:MODE SWEep
7. Trigger the sweep (depending on the mode).
LFOutput:SWEep:EXECute