
To capture glitches or narrow pulses
A glitch is a rapid change in the waveform that is usually narrow as compared
to the waveform. This oscilloscope has two modes of operation that you can
use for glitch capture: peak detect and Autostore.
1
Connect a signal to the oscilloscope and obtain a stable display.
2 Find the glitch.
Use peak detect for narrow pulses or glitches.
•
To select peak detect, press Display . Next, press the Peak Det
softkey.
Peak detect operates at sweep speeds from 5 s/div to 500 ns/div.
When operating, Pk is displayed in the status line in inverse video. At
sweep speeds faster than 500 ns/div, Pk is displayed in normal video,
which indicates that peak detect is not operating. However, the
acquisition system is sampling at 1 GSa/s so glitches greater than 1 ns
will not be missed.
Peak detect operating hint
In peak detect, the A/D converters are sampling at 1 GSa/s. However, not all
samples are written to the display. Only the min and the max samples in each of
the waveform graticules’s 500 pixel columns are written to the display.
Operating Your Oscilloscope
To capture glitches or narrow pulses
2–10
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