So I spent some time yesterday doing a setup to compare my 34401a to the 5017.
The setup:
- 10V LT1021 based voltage source.
- 34401a in High impedance mode, NPLC 10, 10V range.
- 5017, 2s Integration, Filter ON.
- Boths meter connected to the same source.
- 2 hours warmup time (source is always hot).
- Sampling every 3 sec for 7 hours.
This is the deviation in ppm of each meters
Considering the integration time of the 5017 vs the 34401a (2s vs 166.66ms), I was expecting the 5017 to be a lot more stable. So my 5017 is definitly sick.