Hi community,
On my 6643A, the output is delivering a voltage of a few volts (less than 7V, it varies) when the output is disabled. I can see this voltage goes up slowly upon power on (even with output disabled), and as I power off, this voltage would slowly drop down. Which is consistent with a output cap charging/discharging.
However, once I enable the output, then the output voltage and current is exactly on the spot with the programmed value, everything seems to work fine. The trouble is with this random voltage only when the output is disabled.
For those who work with Agilent system power supplies, do you have any guidance on what to check for?
I thank you in advance for your helping hands.