© National Instruments | 2-9
RMX Programmable Power Supplies User Manual
Using the RMX Programmable Power Supplies as
a CV or CC Power Supply
When using the RMX programmable power supply as a constant-voltage power supply, the set
current is the limit to the current that can flow through the load.
When using a RMX programmable power supply as a constant-current power supply, the set
voltage is the limit to the voltage that can be applied to the load.
If the specified limit is reached, the RMX programmable power supply automatically switches
its operation mode. When the RMX programmable power supply switches its operation mode,
the lit LED in the display area (CV LED or CC LED) changes to indicate the switch.
1. Turn the POWER switch off.
2. Connect the load to the output terminals.
3. Turn the POWER switch on. If the OUTPUT LED in the display area is lit, press OUTPUT
to turn the output off.
4. Press SET to change to the setting display. The SET key lights.
5. Turn the VOLTAGE knob to set the voltage.
Voltage Range: 0 to 105% of the Rated Output Voltage
RMX-4120 0 to 31.5 V
RMX-4121 0 to 84 V
RMX-4122 0 to 241.5 V
RMX-4123 0 to 682.5 V
RMX-4124 0 to 31.5 V
RMX-4125 0 to 84 V
RMX-4126 0 to 241.5 V
RMX-4127 0 to 682.5 V
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