Agilent Technologies 42A ユーザーズマニュアル
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Triggering the Oscilloscope
To set holdoff
To set holdoff
1 Press the
Mode/Coupling
key.
2 Turn the Entry knob
to increase or decrease the trigger holdoff
time shown in the
Holdoff
softkey.
Holdoff sets the amount of time that the oscilloscope waits before re-arming the
trigger circuitry. Use Holdoff to stabilize the display of complex waveforms.
trigger circuitry. Use Holdoff to stabilize the display of complex waveforms.
To get a stable trigger on the pulse burst shown below, set the holdoff time to
be >200 ns but <600 ns.
be >200 ns but <600 ns.
By setting the Holdoff, you can synchronize triggers. The oscilloscope will
trigger on one edge of the waveform, and ignore further edges until the holdoff
time expires. The oscilloscope will then re-arm the trigger circuit to search for
the next edge trigger. This allows the oscilloscope to trigger on a repeating
pattern in a waveform.
trigger on one edge of the waveform, and ignore further edges until the holdoff
time expires. The oscilloscope will then re-arm the trigger circuit to search for
the next edge trigger. This allows the oscilloscope to trigger on a repeating
pattern in a waveform.
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