7 Trigger Functions
Trigger
Remote Command
:TRIGger[:SEQuence]:SLOPe POSitive|NEGative
:TRIGger[:SEQuence]:SLOPe?
Example TRIG:SLOP NEG
Preset POSitive
State Saved Saved in instrument state
Backwards Compatibility
Notes
In ESA/PSA, the Trigger Slope was global to all triggers. In the X-Series, the slope can be set
individually for each Trigger Source. For backward compatibility, the global SLOPe command
updates all instances of trigger slope (VID, LINE, EXT1, EXT2, TV, RFB). The query returns the trigger
slope setting of the currently selected trigger source.
Initial S/W Revision Prior to A.02.00
Trig Delay
Controls a time delay during that the analyzer will wait to begin a sweep after meeting the trigger criteria.
You can use negative delay to pre-trigger the instrument in the time domain or FFT, but not in swept spans.
Key Path
Trigger, Video
Remote Command
:TRIGger[:SEQuence]:VIDeo:DELay <time>
:TRIGger[:SEQuence]:VIDeo:DELay?
:TRIGger[:SEQuence]:VIDeo:DELay:STATe OFF|ON|0|1
:TRIGger[:SEQuence]:VIDeo:DELay:STATe?
Example TRIG:VID:DEL:STAT ON
TRIG:VID:DEL 100 ms
Notes Video trigger delay may be set to negative values, in time domain, FFT and even swept. It makes
intuitive sense in time domain and works well in FFT mode where the bandwidth of the filter before
the video trigger is about 1.25 span. In swept spans, negative settings of Trig Delay are treated as a
zero setting within the internal hardware and the advisory message "Neg. Trig Delay unavailable in
Swept Mode, zero delay used." is generated when such a delay is set.
Preset Off, 1 us
State Saved Saved in instrument state
Min –150 ms
Max +500 ms
Default Unit s
Backwards Compatibility
Notes
! For backward compatibility with VSA/PSA comms apps
:TRIGger[:SEQuence]:IF:DELay
:TRIGger[:SEQuence]:DELay
The legacy :TRIGger[:SEQuence]:DELay command affects the delay for the VID, LINE, EXT1, EXT2,
and RFB triggers.
Initial S/W Revision Prior to A.02.00
368 EMI Receiver Mode Reference
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