[ntp:questions] Slow convergence of NTP with GPS/PPS

Hal Murray hal-usenet at ip-64-139-1-69.sjc.megapath.net
Tue Oct 28 19:25:43 UTC 2008

>Ie, you have to sanity check the PPS to make sure that what you think is
>correct, really IS correct. 

It's even worse than that.  When the PPS ticks, you know you
are on a second boundary, but you don't know which second.
You have to get the second from someplace else, perhaps by
parsing the NMEA messages or whatever your GPS device uses.

These are my opinions, not necessarily my employer's.  I hate spam.

More information about the questions mailing list