Hello Attila, A few days ago, I made my regular, monthly comparison of these six 10k and one 1k resistors.\ I use Turbo Pascal on an old W98 machine, and here I have one screenshot of the output my program, 1990ties style, I guess.
The resistors all have a known, linear T.C., so I measure the NTC thermometers in parallel, correct the Ohm reading to the nominal 25°C value, and then calculate mean and StD (sigma) statistics using the Welford algorithm. The resistors (VHP202Z, VHP100) and the NTC are coupled tightly inside a small aluminum block. As you can see, the readings are very stable starting from the very first sample taken, and I achieve a StD / noise value between 0.15 to 0.25ppm each time. \ For this measurement I had to sit frozen on my chair and did not breath. You directly see any hand waving in the noise. Although I’m taking single triggered samples, it is not necessary to skip the first reading, or even more.
_______________________________________________ volt-nuts mailing list -- [email protected] -- To unsubscribe send an email to [email protected] To unsubscribe, go to and follow the instructions there.
