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RMX Programmable Power Supplies User Manual

Cautions When Controlling the Output with an External

Voltage (Vext)

You must take careful precautions when connecting external equipment to the J1 connector to

make sure you do not unknowingly short both output terminals to ground.

Connect the cables so that output is not shorted. See the following figures for examples of

shorted output.

Caution The Vext cable must not be referenced/connected to the chassis ground

terminal. The signal must be floating relative to ground. Connecting/referencing this

signal to ground may cause the cable to be damaged. Refer to Figures 3-10 and 3-11

for more information.

If you are connecting the shield to the Vext side, do not connect the shield to the

output terminal of the RMX programmable power supply.

Figure 3-10. Connection Where the Output is Shorted by the Grounding of Vext

Figure 3-11. Connection Where the Output is Shorted by the Shield

–

2-core shielded wire

Vext RMX

Output is shorted

by the grounding of Vext,

causing current to flow.

Ground the

positive output terminal.

Approximately the same

electric potential as

the negative output terminal

Prohibited

–