On Thu, Feb 19, 2015 at 04:15:45PM +0000, Rob wrote: > > The default PPS refclock driver poll is 0 (1s), this be changed too > > if the PPS signal has a higher rate. Some GPS units seems to have this > > configurable (e.g. ublox NEO-6T). > > The PPS really is 1 PPS, but I am not sure if chrony is evaluating each > pulse separately or is averaging 16 pulse measurements into one clock > adjustment group. (as it says poll 4)
It's the latter. The PPS samples collected in one poll interval are processed by a median filter and the result is used to update the source statistics and update the clock. -- Miroslav Lichvar _______________________________________________ questions mailing list [email protected] http://lists.ntp.org/listinfo/questions
