©
National Instruments Corp.
17
NI 9401 Operating Instructions and Specifications
s
u
pply system that powers eq
u
ipment. This category is for
meas
u
rements of voltages from specially protected secondary
circ
u
its. S
u
ch voltage meas
u
rements incl
u
de signal levels, special
eq
u
ipment, limited-energy parts of eq
u
ipment, circ
u
its powered by
reg
u
lated low-voltage so
u
rces, and electronics.
Caution
Do
not
connect the NI 9401 to signals or
u
se
for meas
u
rements within Meas
u
rement Categories II,
III, or IV.
Safety Standards
This prod
u
ct is designed to meet the req
u
irements of the following
standards of safety for electrical eq
u
ipment for meas
u
rement,
control, and laboratory
u
se:
•
IEC 61010-1, EN 61010-1
•
UL 61010-1, CSA 61010-1
Note
For UL and other safety certifications, refer to the
prod
u
ct label or visit
ni.com/certification
, search
by mod
u
le n
u
mber or prod
u
ct line, and click the
appropriate link in the Certification col
u
mn.
