Hello EEVblog!!!
My first post! I have been reading here for a while though.
A few years ago I found a Fluke 8840A in my employers recycling barrel. There was a tag on it from the calibration tech stating "resistance readings off".
I finally got around to checking into this unit so checked it against 2 other reasonably decent meters I have: A Fluke 45, last calibrated in 2007 and a Agilent U1242A I have owned for at least 8yrs with factory calibration.
I grabbed a pile of resistors and measured them all with all 3 meters.
I got these results: The final column is the reading of the 8840A divided by the average from the 45 and U1242A. I guess I am not seeing there is a big problem?
![](https://i.imgur.com/PETmewg.jpg)
I was using the 2 wire mode on the 8840A, maybe the 4 wire is the problem. I would need to make a harness to check this out. Thoughts?