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Peak Detect: Use this mode to detect glitches within 10ns and to limit the possibility of aliasing. This
mode is valid at the TIME/DIV setting of 4µs/div or slower. Once the TIME/DIV setting is adjusted to
4µs/div or faster, the acquisition mode will change to Normal because the sample rate is fast enough
and Peak Detect is unnecessary. The oscilloscope does not display a message that the mode has been
changed to Normal.
Average: Use this mode to reduce random or uncorrelated noise in the signal to be displayed. Acquire
data in Normal mode and then average some number of waveforms. Choose the number of acquisitions
(4, 16, 64 or 128) to average for the waveform.
Stopping the Acquisition: When running acquisition mode, the waveform display is LIVE. Stop the
acquisition (press the RUN/STOP button) to freeze the display. In either mode, the waveform display
can be scaled or positioned by vertical and horizontal controls.
Equivalent Acquisition: Repeats the Normal acquisition. Use this mode to take a specific observation
on repeatedly displayed periodic signals. A resolution of 40ps can be obtained, (i.e. 25GS/s sample rate),
which is much higher than that obtained in real-time acquisition mode.
The acquisition principle is as follows.
As shown above, aquire a repeatable input signal. Sample the signal at various intervals. Store the
digital values in memory. The Sample points can now be use to recreate the waveform.
