Trigger Source; Holdoff - Teledyne LeCroy T3DSO2000A Series User Manual

15.6 Trigger Source

The trigger sources supported by each trigger type are different. See the table below for
details:

15.7 Holdoff

Holdoff is an additional condition for triggers and can be used to stabilize the triggering
of complex waveforms (such as a pulse series). It can be set to a time or number of
events.
Holdoff by Time
Holdoff time is the amount of time that the oscilloscope waits before re-arming the trigger
circuitry. The oscilloscope will not trigger until the holdoff time expires.
Use the holdoff to trigger on repetitive waveforms that have multiple edges (or other
events) between waveform repetitions. You can also use holdoff to trigger on the first
edge of a burst when you know the minimum time between bursts.
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T3DSO2000A Manual. Page 67