I finally got my PLL running today, and I think I can manage with just a small table of 10 values to be used as the width of my PPS jitter corrector. That takes care of it for this project, but obviously not for the general case.
Bob >________________________________ > From: Chris Albertson <[email protected]> >To: Bob Stewart <[email protected]>; Discussion of precise time and frequency >measurement <[email protected]> >Sent: Wednesday, March 26, 2014 11:25 AM >Subject: Re: [time-nuts] RC TIC linearity correction? > > > >Yes a lookup table would be easy. But how to create the table? I've been >thinking about a way to do self calibration. The controller purposely runs >the DAC and of course the OCXO through some range and watches the phase. This >gives you a rough DAC vs. Phase function. Re-running the calibration could >make up for some component aging. It would take some time (hours) to wait >for everything to warm up and then you'd have to move the EFV voltage slowly > > > > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
