Re: [gpsd-users] Strange 14s offset with GPS 18x LVC

[Gary E. Miller]

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Yo Miroslav!

Your gpsd likely has a bad value for leap seconds.  It happens. It will
eventually get the right value.

RGDS
GARY
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Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97701
        address@hidden  Tel:+1(541)382-8588

On Mon, 17 Oct 2011, Miroslav Lichvar wrote:

> Date: Mon, 17 Oct 2011 16:28:17 +0200
> From: Miroslav Lichvar <address@hidden>
> To: address@hidden
> Subject: [gpsd-users] Strange 14s offset with GPS 18x LVC
>
> Hi,
>
> I've noticed some strange messages in syslog on a system synchronized by
> gpsd (3.1) and chrony via SOCK. It seems the time reported by gpsd was off for
> few minutes by exactly 14 seconds. The GPS unit is Garmin 18x LVC (3.70) in
> NMEA mode, the enabled messages are RMC, GGA, GSA, GSV, RME.
>
> >From the chrony refclocks.log:
>
> ===============================================================================
>    Date (UTC) Time         Refid  DP L P  Raw offset   Cooked offset      
> Disp.
> ===============================================================================
> 2011-10-16 01:52:32.999998 SOC1   12 N 0  1.539000e-06  1.527000e-06  
> 4.974e-07
> 2011-10-16 01:52:33.999999 SOC1   13 N 0  9.980000e-07  9.860000e-07  
> 4.974e-07
> 2011-10-16 01:52:34.999999 SOC1   14 N 0  7.370000e-07  7.260000e-07  
> 4.964e-07
> 2011-10-16 01:52:35.999999 SOC1   15 N 0  1.204000e-06  1.194000e-06  
> 4.964e-07
> 2011-10-16 01:52:27.800001 SOC1    - N -       -        1.961000e-07  
> 1.513e-07
> 2011-10-16 01:52:37.000000 SOC1    0 N 0  7.700000e-08  2.600000e-08  
> 4.923e-07
> 2011-10-16 01:52:38.000000 SOC1    1 N 0  2.300000e-08 -2.500000e-08  
> 4.923e-07
> 2011-10-16 01:52:38.999999 SOC1    2 N 0  5.610000e-07  5.160000e-07  
> 4.923e-07
> 2011-10-16 01:52:39.999999 SOC1    3 N 0  8.060000e-07  7.640000e-07  
> 4.923e-07
> 2011-10-16 01:52:41.000000 SOC1    4 N 0  1.400000e+01  1.400000e+01  
> 4.923e-07
> 2011-10-16 01:52:42.000000 SOC1    5 N 0  1.400000e+01  1.400000e+01  
> 4.913e-07
> 2011-10-16 01:52:43.000000 SOC1    6 N 0  1.400000e+01  1.400000e+01  
> 4.903e-07
> 2011-10-16 01:52:44.000000 SOC1    7 N 0  1.400000e+01  1.400000e+01  
> 4.903e-07
> 2011-10-16 01:52:45.000000 SOC1    8 N 0  1.400000e+01  1.400000e+01  
> 4.893e-07
> 2011-10-16 01:52:46.000000 SOC1    9 N 0  1.400000e+01  1.400000e+01  
> 4.883e-07
>
> Any explanation what could be wrong or has anyone else seen this?
>
> Thanks,
>
> --
> Miroslav Lichvar
>
>
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