Trigger

A short pulse, either positive or negative, that can be used to cause an electronic function to take place.

External Trigger

A voltage pulse from an external source that triggers an event such as A/D conversion.

Post Triggering

The technique used on a DAQ board to acquire a programmed number of samples after trigger conditions are met.

Pre Triggering

The technique used on a DAQ board to keep a continuous buffer filled with data, so that when the trigger conditions are met, the sample includes the data leading up to the trigger condition.


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Subjects: Electronics Signal Processing