© National Instruments 7-1 X Series User Manual
7
Counters
X Series devices have four general-purpose 32-bit counter/timers and
one frequency generator. The general-purpose counter/timers can be used
for many measurement and pulse generation applications. Figure 7-1
shows the X Series Counter 0 and the frequency generator. All four
counters on X Series devices are identical.
Figure 7-1. X Series Counter 0 and Frequency Generator
Counters have eight input signals, although in most applications only a few
inputs are used.
For information about connecting counter signals, refer to the Default
Counter/Timer Pinouts section.
Each counter has a FIFO that can be used for buffered acquisition and
generation. Each counter also contains an embedded counter (Embedded
Ctrn) for use in what are traditionally two-counter measurements and
Counter 0
Counter 0 Source (Counter 0 Timebase)
Counter 0 Aux
Counter 0 HW Arm
Counter 0 A
Counter 0 B (Counter 0 Up_Down)
Counter 0 Z
Counter 0 Gate
Counter 0 Internal Output
Counter 0 TC
Input Selection Muxes
Frequency Generator
Frequency Output Timebase Freq Out
Input Selection Muxes
Embedded Ctr0
FIFO
Counter 0 Sample Clock
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