Trigger Setu p
Trigger Setup
This section contains concepts and procedures for setting up the oscilloscope to trigger o n your signal.
Triggering Concepts
Trigger Event
The trigger event establishes the time-reference point in the waveform record. All waveform record data is located in time with
respect t o that point. The instrument continuously acquires and retains enough sample points to fill the pretrigger portion of th e
waveform record. That is the part of the waveform that is displayed before , or to the left of, the triggering event on screen. When a
trigger event occurs, the instrument starts acquiring samples to build the posttrigg er portion of the w aveform record, that is, the part
displayed after or to the right of the trigger event. After a trigger is recognized, the instrument will not accept another trigger until
the acquisition is complete and the holdoff time has expired.
DPO3000 Series Oscilloscopes User Manua l 107
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