On Sun, Oct 23, 2011 at 2:28 AM, Iain Young <[email protected]> wrote: > Hi Guys, > > I have often heard it said that since RS-232 is more "deterministic", > and suffers from less jitter, and uncertainties, than ethernet, that > it makes a better medium for time distribution (no CDMA for a start).
I think this is only true if the Ethernet is using a shared media. Like the old coax 10BaseT cables. Modern system use switched 100BaseT that works much like a point to point link. In fact if you can do point to point RS232 why not point to point 100BaseT. Just use a crossover cable between two computers. The "best" why to distribute time over an area that is small enough to run cable is to distribute PPS. Most cat-5 cable has unused pairs, makes an easy way to send PPS. Chris Albertson Redondo Beach, California _______________________________________________ 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.
