NI 9485 Operating Instructions
16
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Safety
Safety Voltages
Connect only voltages that are within these limits.
Channel a-to-Channel b .................... 60 VDC max, 30 V
rms
max
Isolation
Channel-to-channel
Continuous ........................... 60 VDC
Withstand ............................. 1,390 V
rms
, verified by a 5 s
dielectric withstand test
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). Do
not
connect to signals or use for
measurements within Measurement Categories III or IV.
