NI cDAQ-9178 - Page 52

NI cDAQ-9178/9174 User Guide and Specifications 52 ni.com
Simple Pulse Generation
Refer to the following sections for more information about the NI cDAQ-9178/9174 simple pulse
generation options:
• Single Pulse Generation
• Single Pulse Generation with Start Trigger
Single Pulse Generation
The counter can output a single pulse. The pulse appears on the Counter n Internal Output signal of the
counter.
You can specify a delay from when the counter is armed to the beginning of the pulse. The delay is
measured in terms of a number of active edges of the Source input.
You can specify a pulse width. The pulse width is also measured in terms of a number of active edges
of the Source input. You also can specify the active edge of the Source input (rising or falling).
Figure 45 shows a generation of a pulse with a pulse delay of four and a pulse width of three (using the
rising edge of Source).
Figure 45. Single Pulse Generation
Single Pulse Generation with Start Trigger
The counter can output a single pulse in response to one pulse on a hardware Start Trigger signal. The
pulse appears on the Counter n Internal Output signal of the counter.
You can specify a delay from the Start Trigger to the beginning of the pulse. You also can specify the
pulse width. The delay is measured in terms of a number of active edges of the Source input.
You can specify a pulse width. The pulse width is also measured in terms of a number of active edges
of the Source input. You can also specify the active edge of the Source input (rising and falling).
Figure 46 shows a generation of a pulse with a pulse delay of four and a pulse width of three (using the
rising edge of Source).
Figure 46. Single Pulse Generation with Start Trigger
Pulse Train Generation
Refer to the following sections for more information about the NI cDAQ-9178/9174 pulse train
generation options:
SOURCE
OUT
Counter Armed
SOURCE
GATE
(Start Trigger)
OUT