Pico Macom PSW044-2.0 사용자 설명서

PSW044-2.0

Trigger timing (part 1)

The pre-trigger time control and post-trigger delay control functions are
described individually under "

", but the interaction between the

 with post-trigger delay enabled:

First, notice that the trigger reference point ( ) does not lie on the waveform. This is
because the post-trigger delay is set to 3.3 ms, which means that the trigger occurred
3.3 ms before the reference point, somewhere off the left-hand edge of the 

 The time axis is aligned so that the trigger reference point is at 3.3 ms.

Second, the pre-trigger delay is set to 30%, which forces the trigger reference point to
appear 30% of the way across the scope view, measured from the left-hand edge.

Third, PicoScope often limits the trigger-to-reference-point delay to the total capture
time. Once you have reached this limit, the program will not let you increase the pre-
trigger delay, and if you increase the post-trigger delay, PicoScope will reduce the pre-
trigger delay to stop the total exceeding the limit.

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