Note
When module terminals are hazardous voltage
LIVE (>42.4 Vpk/60 VDC), you must ensure that
devices and circuits connected to the module are
properly insulated from human contact. You must use
the NI 9940 connector backshell kit with the
NI 9264 with spring terminal to ensure that the
terminals are not accessible.
NI 9264 with Spring Terminal Safety Voltages
Isolation
Channel-to-channel
None
Channel-to-earth ground
Continuous
250 Vrms,
Measurement Category II
Withstand
2,300 Vrms, verified by a 5 s
dielectric withstand test
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.
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NI 9264 Getting Started Guide