Agilent PSU

[kvez]

Hello,

I have two Agilent E3644A power supplies, and I’ve observed an interesting with their output voltage. As shown in the attached image, the output voltage fluctuates in a step way. I don’t think this is a fault, as both units exhibit the exact same behavior.

I’m curious to understand what might be causing this. Both devices are stable and function perfectly otherwise. Recently, I acquired an E3632A unit (with the newer Keysight branding), and it does not show this behavior.

The attached image compares one of the E3644A units with the E3632A.