7 Trigger Functions
Trigger
TRIG:RF:SOUR VID
Selects video triggering for the SANalyzer measurement and the RF input. For SAN, do not use the
<measurement> keyword.
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.
Not all trigger sources are available for each input. For the RF Trigger Source, the following trigger
sources are available:
−IMMediate - free run triggering
−VIDeo - triggers on the video signal level
−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
−EXTernal2 - triggers on an externally connected trigger source marked “Trigger 2 In” on the
front panel. In some models, there is no second External input. In these models, the External
2 key is blanked 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
*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.
Available ranges, and presets can vary from mode to mode.
Status Bits/OPC
dependencies
The Status Operation Register bit 5 "Waiting for Trigger" is set at the same time as the Sweeping or
Measuring bit is set. It is cleared when the trigger actually occurs (that is, after the trigger event
occurs and all the applicable trigger criteria have been met). A corresponding pop-up message
("Waiting for trigger") is generated if no trigger signal appears after approximately 2 sec. This
message goes away when a trigger signal appears.
Initial S/W Revision Prior to A.02.00
I/Q Trigger Source
This command selects the trigger to be used for the specified measurement when I/Q (which requires
option BBA) is the selected input. The I/Q trigger source can be queried and changed even while another
input is selected, but it is inactive until I/Q becomes the selected input.
Remote Command
:TRIGger:<measurement>[:SEQuence]:IQ:SOURce EXTernal1 | EXTernal2 |
IMMediate | IQMag | IDEMod | QDEMod | IINPut | QINPut | AIQMag
:TRIGger:<measurement>[:SEQuence]:IQ:SOURce?
Example TRIG:WAVeform:SOUR IQM
Selects I/Q magnitude triggering for the IQ Waveform measurement and the I/Q input
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.
Not all trigger sources are available for each input. For the I/Q Trigger Source, the following trigger
sources are available:
EMI Receiver Mode Reference 363
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