On Sat, 29 Dec 2012 12:18:56 -0800, Said Jackson <[email protected]> wrote:
>Fabio, > >Happens in all the GPS receivers we have tested here. The difference between >receivers is how fast they can recognize this error and how fast they can >re-aquire once they shut off the 1PPS output due to tcxo instability. > >There was a recent thread here about effects of adding a fan to a Z380x and >the behavior you have seen is one of the reasons why that is a bad idea. > >Some receivers like Rockwell, Trimble etc allow for external 10MHz input from >an ocxo or atomic clock, and some GPSDOs make use of that feature. Having a >very stable and accurate 10MHz reference for the GPS is also supposed to >reduce time to second fix. I am going to have to add that feature to my shopping list of what to look for when I upgrade from my Garmin GPS18-5. One feature I found interesting in the GPS18-5 is that the adjustable dead reckoning time can be set to disable the timing pulse output when there is no current navigation solution. _______________________________________________ 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.
