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© National Instruments Corp. 3 NI 9201/9221
Safety Guidelines
Operate the NI 9201/9221 only as described in these operating
instructions.
Hot Surface This icon denotes that the component may be
hot. Tou ching this component may result in bodily injury.
Safety Guidelines for Hazardous Voltages
Yo u can connect hazardous voltages only to the NI 9201/9221 with
screw terminal. Do not connect hazardous voltages to the
NI 9201/9221 with DSUB.
If hazardous voltages are connected to the module, take the
following precautions. A hazardous voltage is a voltage greater
than 42.4 V
pk
or 60 VDC to earth ground.
Caution Ensure that hazardous voltage wiring is
performed only by qualified personnel adhering to local
electrical standards.
Caution Do not mix hazardous voltage circuits and
human-accessible circuits on the same module.