User Guide

© National Instruments Corporation 65 NI cDAQ-9172 User Guide and Specifications
Routing Counter n Source to an Output Terminal
You can route Counter n Source to any output 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.
You can route the following signals to the Counter n Gate input:
•Any PFI terminal
• ai/ReferenceTrigger
• ai/StartTrigger
• ai/SampleClock
• ai/ConvertClock
• ao/SampleClock
• di/SampleClock
• do/SampleClock
• Change Detection Event
• Analog Comparison Event
In addition, you can route Counter 1 Internal Output or Counter 1 Source
to Counter 0 Gate. You can also route Counter 0 Internal Output or
Counter 0 Source to Counter 1 Gate.
Some of these options may not be available in some driver software.
Routing Counter n Gate to an Output Terminal
You can route Counter n Gate to any output PFI terminal.
Counter n Aux Signal
The Counter n Aux signal indicates the first edge in a two-signal
edge-separation measurement.