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Chapter 5
Counters
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:
•
80 MHz Timebase
•
20 MHz 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
Buffered Edge Counting
Input Terminal
Two-Edge Separation
Counter Timebase
Table 5-8.
Counter Applications and Counter
n
Source (Continued)
Application
Purpose of Source Terminal
