© National Instruments Corp. 25 NI 9229/9239
Safety

Safety Voltages

Connect only voltages that are within the following limits.
Channel-to-earth ground isolation
Continuous................................. 250 Vrms,
Measurement Category II
Withstand....................................2,300 Vrms, verified by a 5 s
dielectric withstand test
Channel-to-channel isolation
Continuous................................. 250 Vrms,
Measurement Category II
Withstand....................................1,390 Vrms, verified by a 5 s
dielectric withstand test
Zone 2 hazardous locations applications in Europe
Maximum voltage
(channel-to-earth ground
and channel-to-channel)............. 60 VDC,
Measurement Category I