Counter N Source Signal; Routing A Signal To Counter N Source - National Instruments NI 6221 User Manual

Chapter 7 Counters

Counter n Source Signal

M Series User Manual
The selected edge of the Counter n Source signal increments and
decrements the counter value depending on the application the counter is
performing. Table 7-3 lists how this terminal is used in various
applications.
Table 7-3. Counter Applications and Counter n Source
Application
Pulse Generation
One Counter Time Measurements
Two Counter Time Measurements
Non-Buffered Edge Counting
Buffered Edge Counting
Two-Edge Separation

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
• RTSI <0..7>
• PFI <0..15>
• PXI_CLK10
• PXI_STAR
• Analog Comparison Event
In addition, Counter 1 TC or Counter 1 Gate can be routed to
Counter 0 Source. Counter 0 TC or Counter 0 Gate can be routed to
Counter 1 Source.
Some of these options may not be available in some driver software.
Purpose of Source Terminal
Counter Timebase
Counter Timebase
Input Terminal
Input Terminal
Input Terminal
Counter Timebase
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