NI USB-9472 User Guide and Specifications 12 ni.com

Figure 7. Pin Assignments

Connecting Devices to the NI USB-9472

The NI USB-9472 has current sourcing outputs, meaning the DO terminal

or pin drives current or applies voltage to the device to which it is

connected.

You can connect sinking-input devices, such as NPN, open collectors,

normally high, IEC negative logic, or other DC devices to the

NIU SB-9472. A sinking-input device provides a path to ground for current

or voltage. Make sure the device you connect to the NI USB-9472 meets

the module specifications. Refer to the Specifications section for more

information about the output specifications of the module.

Connect the device to DO on the NI USB-9472. Connect the common of

the device to COM. Figure8 shows a possible configuration.

COM
Vsup
COM
COM
Vsup
COM
COM
Vsup
COM
COM
Vsup
COM
COM
DO0
Vsup
DO1
DO2
Vsup
DO3
DO4
Vsup
DO5
DO6
Vsup
DO7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
03
47