[ntp:questions] Off by a second glitch from Garmin GPS 18 LVC
oberman at es.net
Fri Aug 31 22:55:21 UTC 2007
> From: hal-usenet at ip-64-139-1-69.sjc.megapath.net (Hal Murray)
> Date: Fri, 31 Aug 2007 15:43:27 -0500
> Sender: questions-bounces+oberman=es.net at lists.ntp.org
> Has anybody else noticed a glitch like this?
> This is running on a system without PPS so I'm looking at the
> data from only the NMEA text. There is no fudge time1 correction.
> The 167 ms offset is normal.
> Note that the NMEA driver is collecting a sample each second.
> They get filterd and averaged. So this quirk was going on
> for most of a minute (the polling interval) if it got through
> the filter.
Since I have recently been posting on the disgusting reality of
universal time and the evilness of leap seconds, I must ask...Could a
source of your time be missing one?
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman at es.net Phone: +1 510 486-8634
Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751
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