ADLINK PCIe-7350 - Manual (Page 62)

52 Function Block and Operation Theory
3.8 Trigger Source and Trigger Mode
The PCIe-7350 supports 2 trigger sources, software command
trigger and external digital trigger, to start or pause the DI or DO
operation. In addition, the PCIe-7350 supports 3 trigger modes,
including post trigger, gated trigger, and post trigger with re-trigger.
In post trigger mode and post trigger with re-trigger mode, the
polarity of digital trigger signal can be configured to rising edge or
falling edge. In gated trigger mode, the level of trigger signal will
start or pause the operation of digital pattern acquisition or genera-
tion. Below are the examples of these trigger conditions.
[Example 1] External digital trigger with post trigger mode
DI data Count: 8 samples
Trigger Event: DI-Start (rising edge)
Figure 3-22: DI Post Trigger
DI Sampled Clock
DI-Start
(rising)
DI Data
Read 8 data
into DI FIFO
Wait for
DI-Start
t
w
t
w
= Minimum required pulse width time
Operation End