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Chapter 7
Counters
Input Selection Muxes
Input Selection Muxes
Input Selection Muxes
NI 6238/6239 User Manual
Counter 0 Source (Counter 0 Timebase)
Counter 0 Gate
Counter 0 Aux
Counter 0 HW Arm
Counter 0 A
Counter 0 B (Counter 0 Up_Down)
Counter 0 Z
Counter 1 Source (Counter 1 Timebase)
Counter 1 Gate
Counter 1 Aux
Counter 1 HW Arm
Counter 1 A
Counter 1 B (Counter 1 Up_Down)
Counter 1 Z
Frequency Generator
Frequency Output Timebase
The counters have seven input signals, although in most applications only
a few inputs are used.
For information on connecting counter signals, refer to the
Terminals
section.
Counter 0
Counter 0 Internal Output
Counter 0 TC
Counter 1
Counter 0 Internal Output
Counter 0 TC
Figure 7-1. M Series Counters
7-2
Freq Out
Default Counter
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