National Instruments NI 9265 - Manual (Page 17)

© National Instruments Corp. 17 NI 9265 Operating Instructions and Specifications
Safety
Maximum Voltage 1
Connect only voltages that are within the following limits.
Channel-to-COM or V
sup
-to-COM ... ±40 V max
Isolation Voltages
Channel-to-channel........................... No isolation between
channels
Channel-to-earth ground, V
sup
-to-earth ground,
or COM-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
1 The maximum voltage that can be applied between any channel or V
sup
terminal
and a COM terminal without damaging the module or other devices.