The Scope Display Menu; Mode Field - HP 1660CS-Series User Manual

The Scope Display Menu

The Display options control how the oscilloscope acquires and
displays waveforms.

Mode field

The Mode field provides three selections: Normal, Average, or Accumulate.
Normal mode
In Normal mode, the oscilloscope acquires waveform data and displays the
waveform acquired from that data. New acquisitions overwrite old data.
Average mode
In Average mode, the oscilloscope averages new data with previously
acquired data. Averaging helps eliminate random noise from your displayed
waveforms.
When you select Average mode, a new field appears next to the Mode field
which allows you to set the number of waveform acquisitions to average. The
number of averages can be set to 2, 4, 8, 16, 32, 64, 128, or 256.
If you start repetitive run, the oscilloscope acquires and displays data,
averaging each run with the preceding set accumulated since you selected
repetitive run. When the oscilloscope has acquired the number of waveforms
you selected, it displays the advisory message "Number of averages has been
met." All new data is weighed at 1/N and is averaged with the previous data.
All data is retained.
If you set the Run mode to Single, acquisitions are not made until you initiate
a Run. If Average # is set to 16, as in the previous example, the "Number of
averages has been met" message will not be displayed until you have selected
the Run field 16 times.
If you bring a waveform that is being averaged in the oscilloscope into the
waveform display of another time correlated module, such as the timing
analyzer, the waveform will not continue to average. Only the most recent
acquisition, not the average trace data, will appear on the screen. To view an
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