NI USB-9481 User Guide and Specifications
10
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Each channel has two interchangeable terminals, CHa and CHb. Each
channel has an LED that indicates the state of that channel. Refer to Table 2
for the terminal assignments for each channel.
Connecting Loads to the NI USB-9481
You can connect loads to the NI USB-9481. Connect the load to one of the
leads of the power source. Connect either the CHa or the CHb terminal
to the load and the other terminal to the other lead of the power source.
Figure 6 shows a possible configuration.
Figure 6.
Connecting a Load to the NI USB-9481
Table 2.
Terminal Assignments
Module
Terminal
Signal
0
CH0a
1
CH0b
2
CH1a
3
CH1b
4
CH2a
5
CH2b
6
CH3a
7
CH3b
8
No connection
9
No connection
0
1
2
3
4
5
6
7
8
9
0
3
NI USB-9481
+
–
Load
or
CHa
CHb
AC
