National Instruments NI 9421

NI 9421/9423 12 ni.com
Wiring for High-Vibration Applications
If an application using the NI 9421/9423 with screw terminal 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 9932 backshell kit to
protect the connections. Refer to Figure 4 for an illustration of
using ferrules. Refer to Figure 1 for an illustration of the NI 9932
connector backshell.
Figure 4. 10-Terminal Detachable Screw-Terminal Connector with Ferrule