To Capture The Waveform Of A Glitch - HP 1660CS-Series User Manual

Cross-Arming Trigger Examples

To capture the waveform of a glitch

To capture the waveform of a glitch
The following setup uses the triggering capability of the timing analyzer and
the acquisition capability of the oscilloscope.
Set up a timing analyzer. Go to the timing analyzer's Format menu
1
and set the Timing Acquisition Mode to Glitch Half Channel 125 MHz.
Glitch mode only allows you to use one pod of a pod pair at a time. If the
wrong pod is active, toggle by selecting the Pod field.
Go to the timing analyzer's Trigger menu.
2
Select an Edge term. Then assign glitch detection "*" to the channels
3
of interest represented by the Edge term.
Go to the Arming Control menu. Set the Scope Arm In to Analyzer.
4
Select Group Run in the Analyzer Arm In menu.
5
Go to the Scope Trigger menu, and set Mode to Immediate.
6
If you have trouble capturing the glitch waveform on the oscilloscope, try
adjusting the skew in the Arming Control menu, so the oscilloscope triggers
earlier.
A timing analyzer can trigger on a glitch and capture it, but a timing analyzer
doesn't have the voltage or timing resolution to display the glitch in detail. An
oscilloscope can display a glitch waveform with fine resolution, but cannot
trigger on glitches, combinations of glitches, or sophisticated patterns involving
many channels.
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