Has anyone found reference which derives the worst case clock jumps to expect when using PTP (IEEE1588-2008) and how to derive a phase noise spectrum from that? I'm looking at a protocol which uses 1588-2008 to create a common clock between networked devices, and those devices are supposed to derive other clocks (e.g. sampling clocks) synchronized to the 1588 clock. If you are locking a sampling clock to that, you will need to know the worst case phase noise so you can design the PLL bandwidth, etc. So far haven't found the right reference which derives that, just some very gross maximum offset type of numbers, nothing which shows whether you might go +/- maximum offset in one cycle, or whether it drifts slowly to that level of offset, etc.
I don't recall seeing much about PTP (Precision Time Protocol) on the list, compared to NTP. Are many people using it yet? -- Chris Caudle _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.