AI-to-COM
20 V DC
AI V
sup
-to-COM
30 V DC
Caution
DO channels are not protected for negative
voltages or voltages greater than V
sup
.
Isolation voltages
Channel-to-earth
1
(up to 5,000 m)
Continuous
60 V DC, 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 measurements of voltages from specially protected secondary
circuits. Such voltage measurements include signal levels, special
1
Channels include V
sup
, AI V
sup
, and COM.
4
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NI 9351 Getting Started Guide