Counter N Internal Output Signal; Hardware Arm Start Triggers - National Instruments NI 660 Series User Manual

Figure 3-7 shows the timing requirements for the CtrnAux signal.
Table 3-7. Minimum Pulse Width for CtrnAux Internal Signals
Parameter
Tauxpw

Counter n Internal Output Signal

The Counter n Internal Output (CtrnInternalOutput) signal is available only
as an output on the CTR n OUT pin, where n is the number of your counter.
For example, the Ctr0InternalOutput signal is available as an output on the
PFI 36/CTR 0 OUT pin. You can also route the CtrnInternalOutput signal
to other locations on the board, such as RTSI.
The CtrnInternalOutput signal reflects the terminal counter (TC) of
counter n. The counter generates a terminal count when its count value
rolls over. The two software-selectable output options are pulse on TC and
toggle output polarity on TC. The output polarity is software-selectable
for both options. This output is set to high-impedance at startup.

Hardware Arm Start Triggers

You can arm each counter using a software command or by using the
Arm Start Trigger. The Arm Start Trigger may be an internal or an external
signal. By using the Arm Start Trigger, you can start more than one counter
simultaneously by configuring each counter to use the same Arm Start
Trigger signal.
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Tauxpw
CtrnAux
Figure 3-7. Timing Requirements for the CtrnAux Signal
Minimum
with RTSI
Minimum Connector
5 ns 5 ns
3-13
Chapter 3 Signal Connections
Tauxpw
Description
CtrnAux minimum pulse width
NI 660x User Manual