8 Trigger
8.1 Trigger
:TRIG:ACP:RF:SOUR EXT1
Select video triggering for the SANalyzer measurement and the RF input. For SAN, do not use the
<measurement> keyword:
:TRIG:RF:SOUR VID
Notes Not all measurements have all the trigger sources available to them. Check the trigger source
documentation for your specific measurement to see what sources are available
Note that not all trigger sources are available for each input, and that the available parameters are
model number and hardware dependent
For the RF Trigger Source, the following trigger sources are available:
IMMediate
free run triggering
VIDeo
triggers on the video signal level
LEVel
triggers on the video signal level with time qualified triggering
FMT
triggers on the amplitude spectrum with frequency mask triggering
LINE
triggers on the power line signal
EXTernal1
or
EXTernal
triggers on an externally connected trigger source marked “Trigger 1 In” on
the rear panel of standalone instruments, “Trigger 3” on the front panel of
EXM and VXT model M9421A, and “Trigger 1” on the front panel of VXT
models M9410A/11A/15A/16A
EXTernal2
triggers on an externally connected trigger source marked “Trigger 2 In” on
the front panel of standalone instruments, and “Trigger 1” on the front
panel of EXM and VXT model M9421A, and “Trigger 2” on the front panel of
VXT models M9410A/11A/15A/16A. In some models, there is no second
External input. In these models, the External 2 selection is not shown and
the EXTernal2 parameter will generate a “Hardware missing; Not
available for this model number” message
RFBurst
triggers on the bursted frame
FRAMe
triggers on the periodic timer
IF
Video
same as video, for backwards compatibility only
PRTChandet
triggers on Base Station Emulation detecting a valid UL signal
(PUSCH/PUCCH/PRACH/SRS)
PRTFrame
triggers on the Base Station Emulation periodic technology format radio
frame with data frame aligned to the BSE timing
PRTEvent
triggers on the Base Station Emulation events
INTernal
triggers on the internal source trigger output, for models with an internal
source such as VXT
PXI
only supported in PXI (modular) instruments
*OPC should be used after requesting data. This will hold off any subsequent changes to the selected
trigger source, until after the sweep is completed and the data is returned
Spectrum Analyzer Mode User's &Programmer's Reference 2644
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