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© National Instruments Corp. 25 NI 9215 Operating Instructions and Specifications
Safety
NI 9215 with Screw Terminal Safety Voltages
Connect only voltages that are within the following limits.
Channel-to-COM .............................. ±30 V max
Isolation
Channel-to-channel .................... No isolation between
channels
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.