Control; Overview Of Sampling - Keysight Technologies InfiniiVision 2000 X Series User Manual

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Acquisition Control
To display the results of multiple acquisitions, use persistence. See
clear persistence"
Single vs. Running The maximum data record length is greater for a single acquisition than when the
and Record Length oscilloscope is running (or when the oscilloscope is stopped after running):
• Single — Single acquisitions always use the maximum memory available — at
• Running — When running (versus taking a single acquisition), the memory is
To acquire data with the longest possible record length, press the [Single] key.
For more information on settings that affect record length, see

Control"

Overview of Sampling

To understand the oscilloscope's sampling and acquisition modes, it is helpful to
understand sampling theory, aliasing, oscilloscope bandwidth and sample rate,
oscilloscope rise time, oscilloscope bandwidth required, and how memory depth
affects sample rate.
178
When you press [Single], the display is cleared, the trigger mode is temporarily
set to Normal (to keep the oscilloscope from auto-triggering immediately), the
trigger circuitry is armed, the [Single] key is illuminated, and the oscilloscope
waits until a trigger condition occurs before it displays a waveform.
When the oscilloscope triggers, the single acquisition is displayed and the
oscilloscope is stopped (the [Run/Stop] key is illuminated in red). Press [Single]
again to acquire another waveform.
If the oscilloscope doesn't trigger, you can press the [Force Trigger] key to trigger
on anything and make a single acquisition.
on page 127.
least twice as much memory as acquisitions captured when running — and the
oscilloscope stores at least twice as many samples. At slower time/div settings,
because there is more memory available for a single acquisition, the acquisition
has a higher effective sample rate.
divided in half. This lets the acquisition system acquire one record while
processing the previous acquisition, dramatically improving the number of
waveforms per second processed by the oscilloscope. When running, a high
waveform update rate provides the best representation of your input signal.
on page 261.
Keysight InfiniiVision 2000 X-Series Oscilloscopes User's Guide
"To set or
"Length