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SCPI Command Reference 6
N9340A User’s Guide 139
TRIGer Subsystem
Trigger subsystem is only valid when the analyzer
is in zero span.
External Trigger Slope
:TRIGer[:SEQuence]:EXTernal:SLOPe
POSitive|NEGative
:TRIGer[:SEQuence]:EXTernal:SLOPe?
The external trigger signal must be a TTL signal at
0 V to 5 V. This function controls the trigger
polarity (for positive or negative-going signals).
Trigger Source
:TRIGer[:SEQuence]:SOURce
IMMediate|VIDeo|EXTernal
:TRIGer[:SEQuence]:SOURce?
This command sets the source (or type) of
triggering used to start a measurement.
• Immediate is a free-run triggering.
• Video triggers on the video signal level.
• External allows you to connect an external
trigger source.
*RST state: Positive
*RST state: Immediate (free- run triggering)
Key access: [Span] > {Trigger}