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
equipment, limited-energy parts of equipment, circuits powered
by regulated low-voltage sources, and electronics.
1
Channels include V
sup
and COM.
4 | ni.com | NI 9350 Getting Started Guide
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