43 PCIE-1816_1816H User Manual
Appendix B Operation Theory
B.1.4 AI Trigger Modes
The PCIE-1816/1816H supports four trigger modes and pause function. User can
start or stop the operation by trigger mode selection. An extra 32-bit counter is dedi-
cated to delay-trigger mode and about-trigger mode, and user can set it as the num-
ber of delay SCAN CLKs before trigger or the number of holding SCAN CLKs after
trigger. Figure shows the four different trigger modes.
Start Trigger Acquisition Mode
Start trigger acquisition starts when the PCIE-1816/1816H detects the trigger event
and stops when you stop the operation. The SCAN CLKs before Trigger will be
blocked out. You can set post-trigger acquisition mode by software.
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