Channel-to-earth ground
Continuous
60 V DC,
Measurement Category I
Withstand up to
3,000 m
1,000 V RMS, verified by a 5 s
dielectric withstand test
Withstand up to
5,000 m
860 V RMS
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.
Caution
Do not connect the NI 9266 with DSUB to
signals or use for measurements within Measurement
Categories II, III, or IV.
Note
Measurement Categories CAT I and CAT O are
equivalent. These test and measurement circuits are for
6
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NI 9266 Getting Started Guide