Maybe the loose connector meant the clock at one end *never* synced with the GPS and just happened to be 60ns fast. Tighten the connecter, clock resyncs, problem solved.
Jim On 23 February 2012 09:57, Rick Karlquist <[email protected]> wrote: > Maybe they checked the connector by replacing the whole > fiber optic cable with a new one, and while doing that > had the "oh sh.." moment of realizing the length of the > old one was 20 meters different than it was supposed to be. > I think this sort of thing has happened to all of us > with significant experience. Or maybe the cable was marked > with an incorrect length (not due to error by the experimenters) > and they forgot "trust but verify". We've probably all > gotten bit by that one as well. > > Rick > > > Poul-Henning Kamp wrote: > > In message <[email protected]>, "Tom > Van > > Baak > > (lab)" writes: > > > >>Could be on the electrical side of the adapter, not the optical > >>side. It's not impossible to get 60 ns of phase or trigger error > >>with RF connectors. > > > > I don't buy that explanation. > > > > It's very hard to get 60 ns *consistent* phase or trigger error, > > with any kind of connector, almost no matter how you go about it. > > > > 20m of extra fiber sounds *much* more plausible. > > > > Inventing an excuse about a loose connector to cover up the mistake > > sounds even more plausible. > > > > You really don't want to defend your phd dissertation, being known > > as the idiot who made a fool of both CERN and SanGrasso in one go. > > > > -- > > Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 > > [email protected] | TCP/IP since RFC 956 > > FreeBSD committer | BSD since 4.3-tahoe > > Never attribute to malice what can adequately be explained by > > incompetence. > > > > _______________________________________________ > > 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. > > > > > > > > _______________________________________________ > 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. > _______________________________________________ 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.
