On Wednesday 18 August 2010, Joachim Ott wrote: > On 18 August 2010 22:44, Al Johnson <[email protected]> wrote: > > ... > > Check that you have the right time, date and timezone set because if > > these are wrong it can lead to very long TTFF, or no fix at all. > > Aren't the satellites transmitting UTC time? Your current date and > time shouldn't matter because you might want to use gps as clock > source. And if your timezone is wrong, you'll get just a wrong > localtime.
The sats transmit UTC time, and the receiver will pick this up before it gets a 'lock' on any sats. The problem is that the ublox receiver doesn't always react well to being fed seriously incorrect initialisation data, including date/time. Most of the time the wrong date/time won't make much difference, but sometimes it causes significant delays in locking on to satellite time. IIRC there is a warning about this in the ublox documentation. As you say, timezone shouldn't make any difference. _______________________________________________ Shr-User mailing list [email protected] http://lists.shr-project.org/mailman/listinfo/shr-user
