Hello and greetings from Germany!
Mayhaps someone here can help me with a little problem (i do hope its just a little thing

).
The problem shows as follows: If I switch the HP 3466A on and measure immediately a 10 V DC source, the HP 3466A shows me pretty much exactly +/- 10 V. If I leave this source connected to the HP 3466A, it can be observed how the reading keeps dropping and seemingly never comes to a stop. After a few minutes, for example, it reads 9.499 V and continues to drop, albeit at an increasingly slower rate. Other DMMs running in parallel stop at +/- 10 V (as expected).
The HP 3466A is still completely untouched (all original) and comes with the battery pack. This battery pack is also still connected, even though it can no longer hold a charge.
Thanks for any advice!