HP-3468A, Display Voltage VDC

[Dave Frederickson]

(05-02-2021 07:16 PM)Garth Wilson Wrote:  

(05-02-2021 06:55 PM)Dave Frederickson Wrote:  The reading isn't steady, it fluctuates like the signal from an unconnected scope probe. This isn't a problem, it's predicted behavior.

The noise I mentioned being caused by water-soluble flux would also cause an unsteady reading. The head post indicated a steady reading of 2.86V though.

The 3468 is a 5.5-digit meter. The first post indicates a reading of 2.86XXX volts where XXX is the unsteady portion of the reading. Every 3468 exhibits this behavior.

My 3468, for example, displays 0.2XXXXX (0.3V range) and slowly creeps up to 2.XXXXX volts (3V range) with nothing connected over several minutes. So the whole display is "unsteady" when nothing is connected and works perfectly when provided an input.