ADLINK PCI-9527 - Manual (Page 43)

Operation Theory 31
ADLINK Technology Inc. PCI-9527
Copyright 2010 User’s Manual
3.4 Trigger Source and Trigger Mode
This section describes information about triggering theory of oper-
ation. In PCI-9527, the operation of AI and AO share the same
trigger source. Therefore, when user enables AI and AO operation
simultaneously, the trigger signal is valid only when AI and AO are
ready to receive trigger signal. For more detail in programming the
PCI-9527, please refer to software operation manual.
3.4.1 Trigger Sources
Figure 3-2: Trigger Architecture of the PCI-9527
Within the PCI-9527, a trigger is a signal that starts the acquisition
of data. When configuring the triggers, you have to decide where
the trigger comes from. PCI-9527 supports internal software trig-
ger, external digital trigger, as well as analog trigger.
Software Trigger
The software trigger is generated by software command. The trig-
ger asserts right after executing specified function calls to begin
the operation.
T
rigger
Source Mu
x
Software Trigger
TRG Input
SMB Connector Digital Trigger Input
Trigger
Decision
To Internal
FPGA Circuit
AI CH0 Analog
Trigger
AI CH1 Analog
Trigger