Technical data

Advanced Triggering, Search & Navigation, and Segmented Acquisition Labs 3
4000 X-Series Oscilloscopes Advanced Training Guide 45
You should now see a synchronized display as shown in Figure 24. The
scope triggers on the 1st edge of a burst of pulses (center- screen) and
then disables triggering for 45.00 µs (holdoff time). During this holdoff
time, the scope ignores the 2nd, 3rd, 4th, etc., crossings, and then re- arms
triggering after the end of the burst, but before the beginning of the next
burst, which is during the signal’s “idle-time”. The next valid trigger event
will again be the 1st edge crossing on the next burst.
Figure 24 Using the scope’s trigger holdoff feature to synchronize on a burst of pulses.
Trigger Point
Next Valid Trigger Event
Holdoff Time