[ntp:questions] garmin 18x and linux

Steve Kostecke kostecke at ntp.org
Mon Sep 5 16:33:32 UTC 2011


On 2011-09-05, Miroslav Lichvar <mlichvar at redhat.com> wrote:

> On Sat, Sep 03, 2011 at 08:05:21AM -0500, steven Sommars wrote:
>
>> I monitored Garmin LVC (corrected firmware) NMEA time and saw
>> variance of up to 50msec. I wonder if the variation in NMEA time
>> depends on GPS signal quality.
>
> I'm wondering what is the cause of the variance too.

NMEA sentences are emitted when the GPS receiver is not busy with other
things. So observed jitter is not suprising.

-- 
Steve Kostecke <kostecke at ntp.org>
NTP Public Services Project - http://support.ntp.org/




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