©
National Instruments Corp.
17
NI 9263 Operating Instructions and Specifications
Safety
Safety Voltages
Connect only voltages that are within the following limits.
Isolation
Channel-to-channel .................... None
Channel-to-earth gro
u
nd
Contin
u
o
u
s ........................... 250 V
rms
,
Meas
u
rement Category II
Withstand ............................. 2,300 V
rms
, verified by a 5 s
dielectric withstand test
Meas
u
rement Category II is for meas
u
rements performed on
circ
u
its directly connected to the electrical distrib
u
tion system.
This category refers to local-level electrical distrib
u
tion, s
u
ch as
that provided by a standard wall o
u
tlet, for example, 115 V for U.S.
or 230 V for E
u
rope.
Caution
Do
not
connect the NI 9263 to signals or
u
se
for meas
u
rements within Meas
u
rement Categories III
or IV.
