User's Manual

NI 9201/9221 10 ni.com
Yo u can connect single-ended voltage signals to the NI 9201/9221.
Connect the positive lead of the voltage signal to AI. Connect the
ground signal to COM. Refer to Figure 3 for an illustration of
connecting a single-ended voltage signal to the NI 9201/9221.
Figure 4. Connecting a Single-Ended Voltage Signal to the NI 9201/9221
Note
You must use 2-wire ferrules to create a secure
connection when connecting more than one wire to a
single terminal on the NI 9201/9221 with screw terminal.
Wiring for High-Vibration Applications
If an application using the NI 9201/9221 with screw terminal is
subject to high vibration, National Instruments recommends that
you either use ferrules to terminate wires to the detachable
COM
AI
+
–
Voltage
Source
NI 9201/9221