National Instruments 9225E Operating Instructions And Specifications page 5

Connecting the NI 9225E
The NI 9225E has three 2-terminal detachable screw-terminal
connectors that provide connections for three simultaneously
sampled, isolated analog input channels.
NI 9225E Operating Instructions and Specifications
AI0+
AI0–
AI1+
AI1–
AI2+
AI2–
Figure 2. NI 9225E Terminal Assignments
0
1
0
1
0
1
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