Counter N Internal Output And Counter N Tc Signals; Routing Counter N Internal Output To An Output Terminal; Frequency Output Signal; Routing Frequency Output To A Terminal - National Instruments DAQ X Series User Manual

Counter n Internal Output and Counter n TC Signals

The Counter n Internal Output signal changes in response to Counter n TC.
The two software-selectable output options are pulse output on TC and
toggle output on TC. The output polarity is software-selectable for both
options.
With pulse or pulse train generation tasks, the counter drives the pulse(s) on
the Counter n Internal Output signal. The Counter n Internal Output signal
can be internally routed to be a counter/timer input or an "external" source
for AI, AO, DI, or DO timing signals.
Routing Counter n Internal Output to an Output
Terminal
You can route Counter n Internal Output to any PFI <0..15>, RTSI <0..7>,
or PXIe-DSTARC terminal. All PFIs are set to high-impedance at startup.

Frequency Output Signal

The Frequency Output (FREQ OUT) signal is the output of the frequency
output generator.

Routing Frequency Output to a Terminal

You can route Frequency Output to any PFI <0..15> or PXIe-DSTARC
terminal. All PFIs are set to high-impedance at startup. The FREQ OUT
signal also can be routed to DO Sample Clock and DI Sample Clock.

Default Counter/Timer Pinouts

By default, NI-DAQmx routes the counter/timer inputs and outputs to the
PFI pins.
Refer to Table 7-9 for the default NI-DAQmx counter/timer outputs for
PCI Express, PXI Express, and USB Mass Termination devices. Refer to
Table 7-10 for the default NI-DAQmx counter/timer outputs for USB
Screw Terminal devices.
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Chapter 7 Counters
X Series User Manual