Agilent Technologies X Series Manual page 573

Notes
Status Bits/OPC dependencies
Backwards Compatibility SCPI
Initial S/W Revision
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.
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
the following trigger sources are available:
Source,
— IMMediate - free run triggering
— VIDeo - triggers on the video signal level
— LINE - triggers on the power line signal
— EXTernal1 - 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
— ALARm – LXI Alarm
— LAN – LXI LAN event
*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.
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.
In earlier instruments, the parameter IF was used by apps for the video trigger,
so using the IF enum selects video triggering.
Sending IF in the query returns the VID enum.
Prior to A.02.00
Trigger
RF Trigger
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