Run/Stop/Single/Autostore/Erase Operation - HP 54645A User's And Service Manual

Run/Stop/Single/Autostore/Erase Operation

During an acquisition, the oscilloscope examines the input voltage at
each input probe.
For analog channels on HP 54645A/D, the input voltage is
determined by the Volts/Div settings.
For digital channels in the HP 54645D, at each sample, the scope
compares the input voltage to the logic threshold. If the voltage is
above the threshold, the oscilloscope stores a "1" in sample
memory; otherwise, it stores a "0."
To control the HP 54645A/D acquisition process, you can do the
following:
Perform continuous acquisitions by pressing the Run/Stop key, and
stop the acquisitions by pressing Run/Stop again.
Take exactly one acquisition, then stop, by pressing the Single key.
Store the results of several acquisitions by pressing Autostore.
Erase the results of all acquisitions by pressing Erase.
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