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Multiple Load Connections
SHOCK HAZARD, LETHAL VOLTAGES - Many models generate output voltages up to
2,000 VDC! Ensure that all instrument connections, load wiring, load and sense
connections are insulated using high-voltage wire. Always attach the safety cover
provided, so that no accidental contact with lethal voltages can occur.
If you are using local sensing and are connecting multiple loads to one output, connect each load to
the output terminals using separate connecting wires as shown in the following figure. This minimizes
mutual coupling effects and takes full advantage of the power supply's low output impedance. Keep
the wire-pair as short as possible and twist or bundle it to reduce lead inductance and noise pickup.
The goal is to minimize the loop area or physical space between the + and - output leads from the bus
bars to the load.
If load considerations require the use of distribution terminals that are located away from the power
supply, twist or bundle the wires from the output terminals to the remote distribution terminals.
Connect each load to the distribution terminals separately. Remote voltage sensing is recommended
under these circumstances. Sense either at the remote distribution terminals or, if one load is more
sensitive than the others, directly at the critical load.
Keysight RP7970 & RP7980 Series Operating and Service Guide
2 Installing the Instrument
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