On Thu, Feb 09, 2023 at 11:37:52AM -0800, Richard Cochran wrote: > On Thu, Feb 09, 2023 at 01:32:14PM +0100, Miroslav Lichvar wrote: > > > Yes, but if you know the length of the chain and charateristics of all > > clocks and their timestamping, you can tune the servos to minimize > > their gain peaking for the synchronization of the last clock. This can > > be done with the pi servo in ptp4l. > > Cool. > > Have you ever published examples of this? That would interest me.
No, I don't remember doing that. I'd expect there to be a thick book written on this subject, likely from someone working in telco, with a conclusion that it's more practical to require all PLLs to have their gain peaking very small (e.g. 0.1 or 0.2 dB), assuming all chains of clocks are long. -- Miroslav Lichvar _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
