The cDAQ chassis has 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. The following figure shows the cDAQ chassis Counter 0 and the frequency generator. All four counters on the cDAQ chassis are identical.

Figure 42. Chassis 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 Routing 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 generations. The embedded counters cannot be programmed independent of the main counter; signals from the embedded counters are not routable.