HP 54540 Series - Page 31

Front-Panel Overview
Control
Capturing single-shot events
Single-shot events are waveforms that occur only once or infrequently. Some
examples of single-shot events are a switch closure, a power supply turning
on, the impact of an object on the floor, or an errant pulse that causes your
system to fail.
In order to capture a single-shot event, you need to have some knowledge of
the waveform you are trying to capture. Before you can set up the trigger,
vertical, and horizontal controls to capture and display the event, you must
know the approximate amplitude, duration, and dc offset of the signal. For
example, if you are using a logic family, the two common trigger levels you
can use to capture an intermittent glitch are VIH minimum and VIL maximum.
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