Trigger Types; Figure 3-7 Pre-Trigger - Agilent Technologies U2300A Series User Manual

3 Features and Functions

Trigger types

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There are four types of trigger, which are pre- trigger,
post- trigger, middle- trigger, and delay- trigger.
Pre-trigger
This trigger type is used when you wish to collect data
before a trigger event. The A/D conversion starts when you
execute the specified function calls and stops when the
trigger event occurs. For example, you specify four sample
points and the analog trigger occurs after four sample points
are converted. Refer to the following figure for further
illustration.
Due to memory limitation on hardware, the maximum sample points is
only up to 8 MSa.

Figure 3-7 Pre-trigger

U2300A Series USB DAQ User's Guide