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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.

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 enclosure. Refer to 
the 

 section for more information.

Software support for your hardware depends on the carrier being used. 
Refer to Table 1 for a list of software support.

Examples are included with each software API. Refer to the corresponding 
software Getting Started Guide for more information. 

Table 1.  Devices and Corresponding Components

USB-9211

NI 9161

NI-DAQmx Base

USB-9211A

NI 9162

NI-DAQmx