From owner-freebsd-current  Thu Dec 16 12:46:42 1999
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To: nate@mt.sri.com (Nate Williams)
Subject: Re: HEADSUP: ntp4 to replace xntpd 
Cc: "FreeBSD Current Users' list" <freebsd-current@FreeBSD.ORG>
In-reply-to: Your message of "Thu, 16 Dec 1999 13:43:46 MST."
		<199912162043.NAA20958@mt.sri.com> 
References: <199912162043.NAA20958@mt.sri.com>  <199912162035.NAA20788@mt.sri.com> <199912161810.LAA19919@mt.sri.com> <Pine.BSF.4.05.9912160934230.23583-100000@semuta.feral.com> <16818.945366687@critter.freebsd.dk> <199912162032.NAA73759@harmony.village.org> <199912162041.NAA73896@harmony.village.org> 
Date: Thu, 16 Dec 1999 13:46:34 -0700
From: Warner Losh <imp@village.org>
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In message <199912162043.NAA20958@mt.sri.com> Nate Williams writes:
: Cool.  I was under the impression that the cheap NMEA signals only gave
: 2-5sec accuracy given the 2400 baud speed issues.

If you have a PPS signal, then you can get fairly close even if the
inforation about the PPS signal comes in at 2400 baud.  If you have no
PPS signal (eg a DTR or DSR that pulses once a second), then you are
SOL for anything better than a few seconds.

: > Don't know a thing about the Garmin 12XL to know for sure about
: > how it operates.
: 
: It just a standard 'cheap' GPS.

My only GPS experience is with Motorola OnCore receivers.

Warner


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