© National Instruments | 5-33
NI cDAQ-917x User Manual
Routing a Signal to Counter n Source
Each counter has independent input selectors for the Counter n Source signal. Any of the
following signals can be routed to the Counter n Source input:
•80MHz Timebase
•20MHz Timebase
• 100 kHz Timebase
• Any PFI terminal
• Analog Comparison Event
• Change Detection Event
In addition, TC or Gate from a counter can be routed to a different counter source.
Some of these options may not be available in some driver software. Refer to the Device Routing
in MAX topic in the NI-DAQmx Help or the LabVIEW Help for more information about available
routing options.
Routing Counter n Source to an Output Terminal
You can route Counter n Source out to any PFI terminal.
Counter n Gate Signal
The Counter n Gate signal can perform many different operations depending on the application
including starting and stopping the counter, and saving the counter contents.
Routing a Signal to Counter n Gate
Each counter has independent input selectors for the Counter n Gate signal. Any of the following
signals can be routed to the Counter n Gate input:
• Any PFI terminal
• AI Reference Trigger
• AI Start Trigger
• AO Sample Clock
• DI Sample Clock
• DI Reference Trigger
• DO Sample Clock
• Change Detection Event
• Analog Comparison Event
In addition, a counter’s Internal Output or Source can be routed to a different counter’s gate.
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