Справочник Пользователя для National Instruments USB-9201

© National Instruments Corporation

Operate the USB-9201/9221 only as described in these operating 
instructions.

Although the NI 9201/9221 might have more stringent certification standards 

than the USB-9201/9221, when used with the USB-9162 carrier, the combined system 
might be limited. Refer to the 

 section for more information.

This icon denotes that the component may be hot. Touching this component 

may result in bodily injury.

Do not disconnect I/O-side wires or connectors unless power has been switched 

off or the area is known to be nonhazardous.

Do not remove modules unless power has been switched off and the area is known 

to be nonhazardous.

The USB-9201/9221 is not certified for use in hazardous locations.

You can connect hazardous voltages to the USB-9201/9221 with the screw 
terminal only. Do not connect hazardous voltages to the USB-9201/9221 
with DSUB.

If hazardous voltages are connected to the module, take the following 
precautions. A hazardous voltage is a voltage >42.4 V

pk

 or 60 VDC to earth 

ground.

Ensure that hazardous voltage wiring is performed only by qualified personnel 

adhering to local electrical standards.

Do not mix hazardous voltage circuits and human-accessible circuits on the same 

module.

Make sure that devices and circuits connected to the module are properly 

insulated from human contact

When module terminals are live with hazardous voltages, make sure that the 

terminals are not accessible by using the high voltage screw terminal backshell. Refer to 
the 

 section for more information.