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NI 9401 Operating Instructions and Specifications
Caution
Do
not
disconnect I/O-side wires or connectors
unless power has been switched off or the area is known
to be nonhazardous.
Caution
Do
not
remove modules unless power has been
switched off or the area is known to be nonhazardous.
Caution
Substitution of components may impair
suitability for Class I, Division 2.
Caution
For Division 2 and Zone 2 applications, install
the system in an enclosure rated to at least IP 54 as
defined by IEC 60529 and EN 60529.
Caution
For Division 2 and Zone 2 applications,
connected signals must be within the following limit:
Capacitance.......................... 0.2
μ
F max
