On Tue, Mar 29, 2016 at 5:48 PM, Vlad <t...@patoka.org> wrote: > > I tried to see the 1PPS on my oscilloscope. Here is the series of > screenshots from that experiment: > > https://www.patoka.ca/OCXO/TBvsSL/
>From those scope shots it looks like one or both of the GPSDOs does not have any kind of lock to GPS time. The PPS leading edges from the two receivers should be aligned to within a few tens to hundreds of nanoseconds, but yours are hundreds of milliseconds apart. The screenshot you have at https://www.patoka.ca/OCXO/TBvsSL/StarLocIImonitor.png shows a receiver only tracking one satellite, which is not sufficient. Maybe the antenna signal connection to that unit is poor or maybe it's defective. The filename says StarLoc but the window title says Thunderbolt, which is it? Good luck, Henry _______________________________________________ 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.
