I have an older Fluke 341 here that has too large jumps in the second decade, which serves as the basis for adjusting the first decade, both in the positive and negative direction.
It may be that the specified deviation is maintained, but the resistances of the third decade are consistently too high and I end up with a deviation of approx. +0.01%! Measured with my Prema 5017 and in parallel with an HP3457A.
I would like to correct this without having to recompile all the resistances.
For the third decade, I thought that it would be sufficient to add high-impedance parallel resistors to the existing resistors. This would have the advantage that any EMF voltages at both soldering points would be equalized i think.
For the resistors in the second decade, which deviate too much downwards, I would try to install low-impedance SMD resistors in the tracks, which would have to be separated.
Is there a NOGO or any hints as to what else I could do or can I do something different?
Enclosed are two tables with which I have calculated the correction resistors and the results.
I made the measurements in the 100V range, as recommended in the manual.
Regards Armin