NI 9201E/9221E
16
ni.com
NI 9201E/9221E with DSUB Isolation Voltages
Channel-to-channel........................... None
Channel-to-earth ground
Continuous ................................. 60 VDC,
Measurement Category I,
(Double insulation)
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.
Caution
Do
not
connect the NI 9201E/9221E with DSUB
to signals or use for measurements within Measurement
Categories II, III, or IV.
