©
National Instruments Corp.
27
NI 9205 Operating Instructions and Specifications
Safety
Maximum Voltage
1
Connect only voltages that are within the following limits.
AI, PFI0, and DO-to-COM............... ±30 VDC
NI 9205 with Spring Terminal Isolation Voltages
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.
1
The maxim
u
m voltage that can be applied or o
u
tp
u
t between AI and COM witho
u
t
creating a safety hazard.