194 Agilent InfiniiVision 3000 X-Series Oscilloscopes User's Guide
12 Acquisition Control
Using Peak Detect Mode to Find a Glitch
1 Connect a signal to the oscilloscope and obtain a stable display.
2 To find the glitch, press the [Acquire] key; then, press the Acq Mode
softkey until Peak Detect is selected.
3 Press the [Display] key then press the ∞ Persistence (infinite persistence)
softkey.
Infinite persistence updates the display with new acquisitions but does
not erase previous acquisitions. New sample points are shown at normal
intensity while previous acquisitions are displayed at reduced intensity.
Waveform persistence is not kept beyond the display area boundary.
Press the Clear Display softkey to erase previously acquired points. The
display will accumulate points until ∞ Persistence is turned off.
4 Characterize the glitch with Zoom mode:
a Press the zoom key (or press the [Horiz] key and then the Zoom
softkey).
b To obtain a better resolution of the glitch, expand the time base.
Figure 37 Sine With Glitch, Peak Detect Mode
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