HP 54710A User's Reference Manual page 287

Trigger Menu
Mode
Glitch
Glitch makes it easy to have the oscilloscope look for glitches on a single
trigger source. The oscilloscope can distinguish glitches down to 3 ns, and it
can capture glitches as narrow as 500 ps. Glitch trigger allows you to trigger
on narrow pulses. You can specify the glitch as wider or narrower than a
specified width.
The glitch mode triggers the oscilloscope on a pulse that is:
•
Of the selected polarity
•
Larger than the amplitude set with by trigger level
•
Wider than or narrower than the selected width, but wider than 500 ps
(depending on the plug-in you are using)
Source Selects which trigger source the oscilloscope uses as it searches
for a glitch.
Level Sets a voltage level the glitch must cross before the oscilloscope
triggers on the glitch.
Polarity Select either a positive or negative polarity glitch. The
oscilloscope triggers on the falling edge of positive polarity glitches, and
on the rising edge of negative polarity glitches.
Width Lets you specify the maximum or minimum width of a potential
glitch that the oscilloscope is to search for. You can set the width from 3
ns to 19 ns in 2-ns increments, or from 20 ns to 160 ms in 10-ns
increments.
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