Hi Based on a quick look, the SkyNav does not appear to be a timing specific part. A 2 us error in a navigation part would come as a big surprise.
Bob On Dec 3, 2012, at 11:12 PM, Gabs Ricalde <gsrica...@gmail.com> wrote: > I'm using a Symmetricom 58534A GPS timing receiver and a GPS board with a > SkyNav SKG25A1 module driving stratum 1 NTP servers. > > On one of the servers, the ppstest output while the 58534A is connected > looks like: > source 0 - assert 1354495734.000000102 > source 0 - assert 1354495735.000000040 > > When I switch the PPS source to the SKG25A1, the ppstest output > indicates the PPS of that receiver is about 2 us early compared to the 58534A: > source 0 - assert 1354495740.999997923 > source 0 - assert 1354495741.999997905 > > The setup looks like this: > 58534A GPS -> 10 m CAT5 cable -> MC3486 RS422 receiver -> GPIO > active antenna -> 3 m cable -> SKG25A1 GPS -> GPIO > > Both receivers were factory reset before the test. > I'm planning on getting another GPS receiver to check which receiver > is at fault. Has anyone found timing differences this large with their > GPS receivers? > > _______________________________________________ > 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. _______________________________________________ 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.