and that will be a good ideea for Martin to think about.
Absolutely and thanks again for that.
I was not aware of that at all.
Nevertheless, I am waiting for an offer from Batronix.
And take the following for me:
- The drift comes from the unaged LM399
- The drift itself does not cause the meter to go outside its own tolerance.
- The drift will decrease over time, i.e. when the LM399 has aged "enough" ?
- You should have a high precision voltage reference in your house if you don't want to bring the meter for calibration every year.
Whereas the latter may become obsolete, because:
Such a reference will cost money, not a little money if you want to calibrate a 6.5 digit meter with it.
The reference must then of course be calibrated regularly, which also costs money.
From this point of view, you could calculate how often you can send a meter for calibration, until you have the money out, which you would spend for your own reference and regular calibration.