Specifications

9
To set up a pattern trigger source, do the following:
a
Select a channel for the source.
•
To set the condition for that channel, press the
L
,
H
, or
X
softkey.
•
To clear the conditions for all channels, press
Clear Pattern
.
b
Repeat step a for all channel sources you want to define.
c
Press
Previous Menu
to return to the Advanced Pattern Trigger menu.
Entered and Exited
In the table of trigger operators and sources:
•
Entered means that the trigger qualifier is satisfied as soon as the input
waveforms have transitioned from a state not matching the pattern to a
state matching that pattern. In an edge term, or a pattern and edge term,
the edge transition is where "entered" is defined.
•
Exited means that the trigger qualifier is satisfied when the input
waveforms transition out of a state matching the pattern to a state not
matching the pattern.
Advanced pattern trigger can help you solve difficult data acquisition
problems. When setting up an advanced trigger, remember:
•
Follow the setup rules.
•
Have a clear picture of the event sequence you are trying to capture, and
understand how the advanced trigger capabilities relate to those events.
The MegaZoom technology’s deep memory and pan and zoom capabilities
greatly simplify this.
Triggering HP 54645A/D Oscilloscopes
To define an advanced pattern trigger
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