In message <[EMAIL PROTECTED]>, Matt Ettus writes: >On 1/19/06, Hal Murray <[EMAIL PROTECTED]> wrote: >> >> > Then, I am not sure all GPS receivers actually use their internal >> > crystal oscillator in a PLL as the timebase. I have read that some >> > work by removing or adding pulses in a discrete fashion rather than >> > phase locking, and this offers significant jitter, making the 1 PPS >> > only useable to phase lock a reference oscillator with a very long >> > integration period to eliminate the jitter. > >To my knowledge, nobody tunes the frequency of the oscillator in their >GPS receiver.
High end GPS receivers can take an external clock signal from your 10MHz house standard. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [EMAIL PROTECTED] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
