66xxA and E36xxA: Programmable Current Sinking

In general, current sinking is a fixed value at some percentage of the full scale current output.

However, there is an exception for one series of Keysight power supplies. On the 663xB series, the maximum negative current tracks the value programmed for the positive current limit. This capability allows the 663xB units to function as a constant current load in some applications, such as battery cycling and test.