Chapter 6
Digital I/O
©
National Instruments
6-13
X Series User Manual
Using a Digital Source
To
u
se DI Pa
u
se Trigger, specify a so
u
rce and a polarity. The so
u
rce can be
any of the following signals:
•
PFI <0..15>
•
RTSI <0..7>
•
PXI_STAR
•
PXIe-DSTAR<A,B>
•
Co
u
nter
n
Internal O
u
tp
u
t
•
Co
u
nter
n
Gate
•
AI Pa
u
se Trigger (ai/Pa
u
seTrigger)
•
AO Pa
u
se Trigger (ao/Pa
u
seTrigger)
•
DO Pa
u
se Trigger (do/Pa
u
seTrigger)
The so
u
rce also can be one of several other internal signals on yo
u
r DAQ
device. Refer to
Device Routing in MAX
in the
NI-DAQmx Help
or the
LabVIEW Help
for more information.
Using an Analog Source
When yo
u
u
se an analog trigger so
u
rce, the internal sample clock pa
u
ses
when the Analog Comparison Event signal is low and res
u
mes when the
signal goes high (or vice versa).
Routing DI Pause Trigger Signal to an Output
Terminal
Yo
u
can ro
u
te DI Pa
u
se Trigger o
u
t to any RTSI <0..7>, PFI <0..15>,
PXI_STAR, or PXIe-DSTARC terminal.
Note
Pa
u
se triggers are only sensitive to the level of the so
u
rce, not the edge.
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