Interesting to see On Thu, Jun 7, 2012 at 6:34 PM, Azelio Boriani <[email protected]>wrote:
> So we must find a way to upload a new firmware for the TBolt before the > 2017... that is download the actual firmware (3.00) correct the bias and > upload the corrected one. > > On Thu, Jun 7, 2012 at 10:48 PM, David McGaw <[email protected] > >wrote: > > > Not true. GPS week is imbedded in the GPS data. > > > > David > > > > > > On 6/7/12 4:39 PM, Mark Sims wrote: > > > >> Most GPS receivers base their rollover point from their data of > >> manufacture/firmware creation/etc. The week rolls over 1024 weeks > after > >> that. They tend to not be dependent upon when the actual GPS week > rolls > >> over. Better receivers have ways of inferring the actual week after a > >> rollover occurs... it appears that the Thunderbolt does not do this. > >> Also, most GPS receivers do not cease to work after a rollover... they > >> just report a bad date. > >> > >> From the Thunderbolt manual: > >> The first week number roll-over will occur as August 21, 1999 (GPS) > >> transitions to August 22, 1999 (GPS). The ThunderBolt adjusts for this > week > >> rollover by adding 1024 to any week number reported by GPS which is less > >> that week number 936 which began on December 14, 1997. With this > technique, > >> the ThunderBolt will provide an accurate translation of GPS week number > and > >> TOW to time and date until July 30, 2017. > >> > >> _______________________________________________ > >> 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. > _______________________________________________ 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.
