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© National Instruments Corp. 19 NI 9225E Operating Instructions and Specifications
Isolation Voltages
Channel-to-channel
Continuous .................................600 V
rms
,
Measurement Category II,
(Basic insulation)
Withstand....................................2,300 V
rms
, verified by a 5 s
dielectric withstand test
Channel-to-earth ground
Continuous .................................300 V
rms
,
Measurement Category II,
(Double insulation)
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 9225E to signals or use for
measurements within Measurement Categories III or IV.