190 Keysight InfiniiVision 3000 X-Series Oscilloscopes User's Guide
12 Acquisition Control
• Normal — at slower time/div settings, normal decimation occurs, and there is
no averaging. Use this mode for most waveforms. See "Normal Acquisition
Mode" on page 190.
• Peak Detect — at slower time/div settings, the maximum and minimum
samples in the effective sample period are stored. Use this mode for
displaying narrow pulses that occur infrequently. See "Peak Detect
Acquisition Mode" on page 190.
• Averaging — at all time/div settings, the specified number of triggers are
averaged together. Use this mode for reducing noise and increasing
resolution of periodic signals without bandwidth or rise time degradation.
See "Averaging Acquisition Mode" on page 193.
• High Resolution — at slower time/div settings, all samples in the effective
sample period are averaged and the average value is stored. Use this mode
for reducing random noise. See "High Resolution Acquisition Mode" on
page 195.
Normal Acquisition Mode
In Normal mode at slower time/div settings, extra samples are decimated (in other
words, some are thrown away). This mode yields the best display for most
waveforms.
Peak Detect Acquisition Mode
In Peak Detect mode at slower time/div settings, minimum and maximum samples
are kept in order to capture infrequent and narrow events (at the expense of
exaggerating any noise). This mode displays all pulses that are at least as wide as
the sample period.
For InfiniiVision 3000 X-Series oscilloscopes, which have a maximum sample rate
of 4 GSa/s, a sample is taken every 250 ps (sample period).
See Also • "Glitch or Narrow Pulse Capture" on page 191
• "Using Peak Detect Mode to Find a Glitch" on page 192
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