what is the meaning for“rated output voltage” in remote sensing of 66XXA series power supply？

Troubleshooting (FAQ)

Summary

The “Rate output voltage” is that voltage indicated in small table shown below. This table is actually from the “Specifications” section of the 667xA family, not from the Supplemental Characteristics section.

Question

Answer

The “Rate output voltage” is that voltage indicated in small table shown below. This table is actually from the “Specifications” section of the 667xA family, not from the Supplemental Characteristics section.

For the 667xA family of instruments, when using remote sensing, the maximum voltage drop in EITHER of the loads leads cannot exceed “Rated (maximum) output voltage”/2.

Using the 6672A as an example:

The rated(maximum) output voltage is 20volts. It does not matter using remote or local sensing, the maximum output voltage available at the output buss bars of the 6672A is 20volts.

Assume that the application results in a, COMBINED, voltage drop in the leads between the output buss bars(of the 6672A) and the load of 15volts. Then the maximum voltage available for his load is 20-15 = 5volts.
(In this example, to obtain 5volts at the load, should have to program the output voltage to 20volts).

For the same load (and load leads), but using remote sensing; should place the sensing leads at the load. The 6672A would now be programmed to 5volts.
(Under these conditions, the voltage on the 6672A buss bars would automatically become 20volts)