User manual

Reference174

9.5

Trigger timing (part 2)

"Trigger timing (part 1) " introduced the concepts of pre-trigger delay and the

post-trigger delay . This diagram below shows how they are related.

The pre-trigger delay positions the scope view in relation to the trigger reference

point so that you can choose how much of the waveform should be before the

reference point, and how much after it.

The post-trigger delay is like the delayed trigger of a conventional oscilloscope.

PicoScope waits for this time after the trigger event before drawing the trigger

reference point. Scope devices have a limit to the number of sampling intervals that

can elapse between the trigger event and the end of the capture, so the software may

adjust the pre-trigger delay to keep within this limit.

Tip: If you have set up a post-trigger delay, you can click the post-trigger delay

button while the scope is running whenever you want to switch between viewing the

trigger event and the trigger reference point.

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