hi, I am using E3631A instead. However, you may wanna read on for some hints.
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I used [HPE3631A Configure Output.vi] for setting the Initial Voltage & Initial Current Limit levels.
Later, to make changes only to the Volatge setting, I, again, used [HPE3631A Configure Output.vi] with "Current Mode" wired to "TRUE"
(I think it should be the same for setting the Current)
Would you try this?
Best regards
ian.f k
PS: Hope this helps.