© National Instruments | 1-1
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Installation and Preparation
This chapter describes how to turn on an RMX programmable power supply, what kind of load 
cables to use, and how to connect cables to the output connectors.
Note Protection provided by this equipment may be impaired if it is used in a 
manner not described in the manual.
Attaching the Connector Cover
RMX programmable power supplies are supplied with a connector cover that fits over the entire 
sensing, J1, and J2 connectors. For safety reasons, be sure to attach the connector cover when 
you use the RMX programmable power supply.
Figure 1-1.  Connector Cover
Connecting the Power Cord
This product is a piece of equipment that conforms to IEC Overvoltage Category II (equipment 
that consumes energy supplied from a fixed installation).
A power cord is not included with the RMX-4124/4125/4126/4127. Use a power cord that 
conforms to this product’s rated AC input voltage, input current, and configured for the 
plug type. Refer to your product specifications for details.
Caution Risk of electric shock. This product is a piece of equipment that conforms 
to IEC Safety Class I (equipment that has a protective conductor terminal). Be sure 
to earth ground the product to prevent electric shock. The product is grounded 
through the power cord ground wire. Connect the protective conductor terminal to 
earth ground.