On Montag, 2. März 2020 22:37:02 CET Björn wrote: > Hi Mattias, > > Then if you lock and control the 48MHz. You can also control the 1PPS edge > to the accuracy of the computed time... add 1s drift and lock uncertainty. > > Read the beginning of the Tbolt manual. The Tbolt lets it’s locked 10MHz > tick the whole receiver.
Yep, you can do that. Any chance for getting that scheme to work with one of the stand-alone timing receivers? > > /Björn > > Sent from my iPhone > > > On 2 Mar 2020, at 22:14, Matthias Welwarsky <[email protected]> > > wrote: > > > > On Montag, 2. März 2020 13:14:55 CET Anton Moehammad via time-nuts wrote: > >> 2. In the UCenter or almost any software > >> control for GPS module/receiver we can find data for next pps, why if the > >> software can calculate the PPS should be they do not use it to adjust the > >> PPS output so the PPS jitter is minimal ? > > > > There are no clocks in a GPS receiver with picoseconds resolution and > > everything the GPS outputs will be naturally restricted to its internal > > clock granularity. The time pulse signal from a Ublox module can > > therefore only be accurate to tens of nanoseconds (around 20ns assuming > > an internal 48MHz clock). However, the time solution calculated by the > > receiver will be much better. The quantization error reported in the TP5 > > message can simply be added to the timestamp of the received pulse to > > calculate its true arrival. > > > > BR, > > Matthias > > > >> _______________________________________________ > >> time-nuts mailing list -- [email protected] > >> To unsubscribe, go to > >> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and > >> follow > >> the instructions there. > > > > _______________________________________________ > > time-nuts mailing list -- [email protected] > > To unsubscribe, go to > > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and > > follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow > the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
