Ni 9423 Safety Voltages - National Instruments NI 9423 Getting Started Manual

NI 9423 Safety Voltages

Connect only voltages that are within the following limits:
Channel-to-COM ...........................................................
Isolation
Channel-to-channel ...................................................
Channel-to-earth ground
Continuous ...........................................
Withstand ...........................................
Measurement Category II is for measurements performed on
circuits directly connected to the electrical distribution system.
This category refers to local-level electrical distribution, such as
that provided by a standard wall outlet, for example, 115 V for
U.S. or 230 V for Europe.
Caution
for measurements within Measurement Categories III
or IV.
4 | ni.com | NI 9423 Getting Started Guide
Do not connect the NI 9423 to signals or use
30 V max
None
250 Vrms,
Measurement Category II
2,300 Vrms, verified by a
5 s dielectric withstand test