ADLINK PCI-9527 - Manual (Page 45)

Operation Theory 33
ADLINK Technology Inc. PCI-9527
Copyright 2010 User’s Manual
3.4.2 Trigger Mode
There are two trigger modes working with trigger sources to initi-
ate different data acquisition timing when a trigger event occurs.
The following trigger mode descriptions are applied to analog input
and analog output functions.

Post trigger mode acquisition/generation

Delay trigger mode acquisition/generation
Post Trigger Mode
If user configures the trigger mode as post trigger, following action
begins right after the trigger conditions are met:
 The analog input channel acquires a programmed number
of samples at a specified sampling rate.

The analog output channel output pre-defined voltage at a
specified output rate.
Figure 3-4: Post-trigger Acquisition / Waveform Generation
Time
Operation
start
Trigger
N sampled data
Analog
Input
Trigger Event Occurs
Acquisition or waveform
generation start
Acquisition or waveform generation
stop
Analog
Output