Instrument Function
R&S
®
SMU200A
250Operating Manual 1007.9845.32 ─ 15
"Step"
Sets a step-by-step sweep cycle.
If this mode is activated, the cursor moves to the value displayed for
"Current Freq". Any variation to the "Current Freq" value triggers a sweep
step. The step width is set below at entry field "Step Lin" or "Step Log".
If a different sweep mode was activated prior to the "Step" mode, the
current sweep is stopped. The "Step" sweep starts at the current RF
frequency when triggered.
The "Reset Sweep" button resets the sweep to the start frequency.
Example:
SOUR:SWE:FREQ:MODE MAN
SOUR:FREQ:MODE SWE
SOUR:SWE:FREQ:SPAC LIN
SOUR:SWE:FREQ:STEP:LIN 0.5E4
SOUR:FREQ:MAN 1GHz
The value entered with command SOUR:SWE:FREQ:STEP:LIN|LOG
sets the step width.
The value entered with command SOUR:FREQ:MAN has no effect, the
command only triggers the next sweep step. However, the value has to
be in the currently set sweep range (start to stop). In remote control only
a step-by-step sweep from start to stop frequency is possible.
"Extern Single"
Sets a single sweep cycle. The sweep is triggered by an external trigger
signal.
If a different sweep mode was activated prior to the "Extern Single" mode,
the current sweep is stopped. The "Extern Single" sweep always starts
at the start frequency when triggered.
The external trigger signal is input at the BNC connector INST TRIG.
The BNC connector INST TRIG is provided for Path A, and the pin INST
TRIG B on the AUX I/O interface for Path B.
The "Reset Sweep" button resets the sweep to the start frequency.
Example:
SOUR:SWE:FREQ:MODE AUTO
TRIG:FSW:SOUR EXT
SOUR:FREQ:MODE SWE (External trigger)
RF Signal and Analog Modulations - RF Block
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