User's Manual
© National Instruments Corporation 11 NI USB-9472 User Guide and Specifications
You must connect an external power supply to the NI USB-9472. This
power supply provides the current for the devices you connect to the
module. Connect the positive lead of the power supply to the supply
terminal or pin, V
sup
, and the negative lead of the power supply to the
common terminal or pin, COM. The eight digital output channels are
internally referenced to COM. Refer to Table 3 for the terminal
assignments of the NI USB-9472 with screw terminal. Refer to Figure 7 for
the pin assignments of the NI USB-9472 with D-SUB.
Table 3. Terminal Assignments
Module Terminal Signal
0 DO0
1 DO1
2 DO2
3 DO3
4 DO4
5 DO5
6 DO6
7 DO7
8 Supply (V
sup
)
9 Common (COM)
0
1
2
3
4
5
6
7
8
9
03
47