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Chapter 7 Counters
© National Instruments Corporation 7-27 NI 6124/6154 User Manual
Routing Counter n Source to an Output Terminal
You can route Counter n Source out to any PFI <0..15> or RTSI <0..7>
terminal. All PFIs are set to high-impedance at startup.
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:
•RTSI<0..7>
• PFI <0..15>
• AI Reference Trigger (ai/ReferenceTrigger)
• AI Start Trigger (ai/StartTrigger)
• AI Sample Clock (ai/SampleClock)
• AI Convert Clock (ai/ConvertClock)
• AO Sample Clock (ao/SampleClock)
• DI Sample Clock (di/SampleClock)
• DO Sample Clock (do/SampleClock)
•PXI_STAR
• Change Detection Event
• Analog Comparison Event
In addition, Counter 1 Internal Output or Counter 1 Source can be routed to
Counter 0 Gate. Counter 0 Internal Output or Counter 0 Source can be
routed 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 out to any PFI <0..15> or RTSI <0..7>
terminal. All PFIs are set to high-impedance at startup.