Strange enough that the frequency error vs. temperature has a shape just
opposite to that of a tuning fork crystal, where the vertex ("turning
point")of the parabola is the maximum frequency.Bernd -----Ursprüngliche Nachricht----- Von: Jeremy Elson [mailto:[email protected]] Gesendet: Montag, 4. April 2022 20:59 An: Discussion of precise time and frequency measurement <[email protected]> Betreff: [time-nuts] "software TCXO" on commodity computers This just won the Best Paper award at NSDI 2022: https://www.usenix.org/system/files/nsdi22-paper-najafi_1.pdf It's a clever idea: they observe that most commodity computer motherboards have temperature sensors onboard, and found a correlation between clock frequency and the output of that temperature sensor. Using that model they were able to build a "pure software TCXO" that maintains frequency an order of magnitude better than the typical performance of a crystal without the corrections. _______________________________________________ time-nuts mailing list -- [email protected] -- To unsubscribe send an email to [email protected] To unsubscribe, go to and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] -- To unsubscribe send an email to [email protected] To unsubscribe, go to and follow the instructions there.
