NI 9421/9423
18
ni.com
Weight
NI 9421/9423 with
screw-terminal ............................ 150 g (5.3 oz)
NI 9421 with DSUB ................... 145 g (5.1 oz)
Safety
NI 9421/9423 with Screw-Terminal Safety Voltages
Connect only voltages that are within the following limits.
Channel-to-COM .............................. 30 V max
Isolation
Channel-to-channel .................... None
Channel-to-earth gro
u
nd
Contin
u
o
u
s ........................... 250 V
rms
,
Meas
u
rement Category II
Withstand ............................. 2,300V
rms
, verified by a 5 s
dielectric withstand test
Meas
u
rement Category II is for meas
u
rements performed on
circ
u
its directly connected to the electrical distrib
u
tion system.
This category refers to local-level electrical distrib
u
tion, s
u
ch as
