Trigger Setu p
1. Adjust the position (delay) time by rotating
the Horizontal Position knob.
2. Turn horizontal SCALE to acquire the
detail that you n eed around the position
(delay) expansion point.
The part of the record that occurs before the t rigger is the pretrigge r portion. The part that occurs after the trigger is the posttrigger
portion. Pretrigger data can help you troubleshoot. For example, to find the cause of an unwanted glitch in your test circuit, you c an
trigger on the glitch and make the pretrigger period large enough to capture data before the glitch. By analyzing what happens
before the glitch, you may uncover information that helps you find the source of the glitch. Alternatively, to see what is happening in
your system as a re sult of the trigger event, make the posttrigg er period large enough to capture data afte r the trigger.
DPO3000 Series Oscilloscopes User Manua l 111
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