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Trigger
Video (IF Envelope)
Pressing this key, when it is not selected, selects the video signal as the trigger. The Video trigger
condition is met when the video signal (the filtered and detected version of the input signal, including
both RBW and VBW filtering) crosses the video trigger level.
NOTE When the detector selected for all active traces is the average detector, the video
signal for triggering does not include any VBW filtering.
The video trigger level is shown as a labeled line on the display. The line is displayed as long as video is
the selected trigger source.
Pressing this key, when it is already selected, accesses the video trigger setup functions.
State Saved: Saved in instrument state
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
Key Path:
Trigger
Example: TRIG:SOUR VID Swept SA measurement
TRIG:<meas>:SOUR VID Measurements other than Swept SA
Notes: Log Plot and Spot Frequency measurements do not support Video Trigger
Dependencies: Video trigger is allowed in average detector mode.
State Saved: Saved in instrument state
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.
Backwards Compatibility Notes: 1. In the past, the Average detector was not available when Video triggering
was on, and consequently, functions that set the detector to average (such
as Marker Noise or Band/Intvl Power) were not available when the video
trigger was on. Similarly, Video triggering was not available when the
detector was Average. In the X-Series, these restrictions are removed.
Initial S/W Revision: Prior to A.02.00