NI 9201/9221 20 ni.com
Channel-to-earth ground
Continuous ................................. 250 V
rms
,
Measurement Category II
Withstand.................................... 2,300 V
rms
, verified by a 5 s
dielectric withstand test
Measurement Category II is for measurements performed on
circuits directly connected to the electrical distribution system.
This category refers to local-level electrical distribution, such as
that provided by a standard wall outlet, for example, 115 V for U.S.
or 230 V for Europe.
Caution Do not connect the NI 9201/9221 with screw
terminal to signals or use for measurements within
Measurement Categories III or IV.
NI 9201/9221 with DSUB Isolation Voltages
Channel-to-channel........................... None
Channel-to-earth ground
Continuous ................................. 60 VDC,
Measurement Category I
Withstand.................................... 1,000 V
rms
, verified by a 5 s
dielectric withstand test
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