National Instruments 24-Bit Half/Full-Bridge Analog Input Module NI 9237 - Manual (Page 28)

NI 9237 Operating Instructions and Specifications 28 ni.com
Physical Characteristics
If you need to clean the module, wipe it with a dry towel.
Weight............................................... 152 g (5.4 oz)
Safety
Safety Voltages
Connect only voltages that are within the following limits.
Between any two pins ....................... ±30 V max
Isolation
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
Measurement Category I is for measurements performed on
circuits not directly connected to the electrical distribution system
referred to as MAINS voltage. MAINS is a hazardous live electrical
supply system that powers equipment. This category is for