ADLINK PCI-9846 - Manual (Page 49)

Operation Theory 39
3.5 Trigger Modes
There four trigger modes working with trigger sources to initiate
different data acquisition timing when a trigger event occurs. They
are described in this section.
3.5.1 Post-trigger Acquisition
Use post-trigger acquisition when you want to collect data after the
trigger event, as illustrated in Figure 3-11.
Figure 3-11: Post-trigger Acquisition
Time
Operation
start
Trigger
N samples Data
Trigger Event Occurs
Acquisition start Acquisition stop
Begin to transfer data to system