NI USB-9229/9239 User Guide and Specifications
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source to the AI– terminal. Refer to Table 3 for the terminal assignments
for each channel.
Wiring for High-Vibration Applications
If an application is subject to high vibration, National Instruments
recommends that you either use ferrules to terminate wires to the
detachable screw-terminal connector or use the NI 9971 backshell
kit to protect the connections. Refer to Figure 7 for an illustration.
Figure 7.
2-Terminal Detachable Screw-Terminal Connector with Ferrule
Table 3.
Terminal Assignments
Module
Channel
Terminal
Signal
0
0+
AI0+
0–
AI0–
1
1+
AI1+
1–
AI1–
2
2+
AI2+
2–
AI2–
3
3+
AI3+
3–
AI3–
1+
1-
0+
0-
2+
2-
3+
3-
Ch 0
Ch 1
Ch 2
Ch 3
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