HDO9000 High Definition Oscilloscopes Operator's Manual
QualFirst Trigger
The QualFirst trigger, which is used in Sequence sampling mode, is set up exactly like the
trigger. The only difference is that the "B" event is captured as a series of sequence segments, rather
than a single acquisition.
Cascaded Trigger
A Cascaded trigger type establishes a succession of criteria in Stages A-D. The trigger occurs when
stages B through D—or whatever is the last defined event—are achieved. In Normal trigger mode, it
automatically resets after finding the last defined event. You may apply additional Holdoff by time or
number of events between each stage in the cascade.
On the Trigger dialog, select
MultiStage
trigger type and choose
Cascaded
.
Then, on the
Cascaded dialog
choose the A through D events.
You may apply additional
at each stage by time or number of events:
l
Time
and
Events
work exactly as they do in other Holdoff counts.
l
Time & Reset
sets a Holdoff time between cascaded events, but resets to the beginning of the
cascade if no valid trigger occurs before the reset time expires.
Once you've selected the A through D events on the Cascade dialog, set up the conditions on the
respective sub-dialogs exactly as you would a
.
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