Keysight Technologies DSO-X 2002A, User Manual

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164 Keysight InfiniiVision 2000 X-Series Oscilloscopes User's Guide
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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.
Use the horizontal position knob ( ) to pan through the waveform to set the
expanded portion of the normal window around the glitch.
Averaging Acquisition Mode
The Averaging mode lets you average multiple acquisitions together to reduce
noise and increase vertical resolution (at all time/div settings). Averaging requires
a stable trigger.
The number of averages can be set from 2 to 65536 in power-of-2 increments.
A higher number of averages reduces noise more and increases vertical resolution.
# Avgs Bits of resolution
2 8
4 9
16 10
64 11
≥
256
12