[ntp:questions] Re: Garmin 18lvc working (finally!)

crichmon at localhost.localdomain crichmon at localhost.localdomain
Wed Mar 29 15:25:48 UTC 2006


In article <slrne2k33e.21b.crichmon at localhost.localdomain>, crichmon at localhost.localdomain wrote:
> Following Dave Taylor's config and setting the unit for
> GPRMC NEMA strings seems to have got me going.  Here's
> some of the data.  Not sure what to make of the log
> messages.  At the moment, the unit is on top of the bookself
> in my office.

>      remote           refid      st t when poll reach   delay   offset  jitter
>==============================================================================
> xlp486.chaos.hom 63.192.96.2      3 u   40  128  377    0.189    5.224   0.018
> *GPS_NMEA(1)     .PPS.            0 l   22   64  377    0.000    0.002   0.001

Here's some more data after running overnight.  The logs surely indicate
some sort of error with the receiver or my hardware.

[crichmon at tua512 ~]$ /usr/sbin/ntpq -p
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
xlp486.chaos.hom 63.192.96.2      3 u   34   64  377    0.178    5.946   1.839
*GPS_NMEA(1)     .PPS.            0 l   23   64  377    0.000   -0.003   0.003

[crichmon at tua512 ~]$ /usr/sbin/ntpdc -c kern
pll offset:           -1.838e-06 s
pll frequency:        33.021 ppm
maximum error:        0.002887 s
estimated error:      1.5e-05 s
status:               2107  pll ppsfreq ppstime ppssignal nano
pll time constant:    6
precision:            6.28e-07 s
frequency tolerance:  496 ppm
pps frequency:        33.021 ppm
pps stability:        0.052 ppm
pps jitter:           9.3789e-05 s
calibration interval: 256 s
calibration cycles:   191
jitter exceeded:      1148
stability exceeded:   6
calibration errors:   0

This pattern ran all night.

Mar 29 03:13:16 tua512 ntpd[1554]: pps sync disabled
Mar 29 03:13:24 tua512 ntpd[1554]: kernel time sync enabled 2107
Mar 29 03:16:40 tua512 ntpd[1554]: kernel time sync disabled 2307
Mar 29 03:17:35 tua512 ntpd[1554]: pps sync disabled
Mar 29 03:17:45 tua512 ntpd[1554]: kernel time sync enabled 2107
Mar 29 03:18:50 tua512 ntpd[1554]: kernel time sync disabled 2307
Mar 29 03:19:45 tua512 ntpd[1554]: pps sync disabled
Mar 29 03:19:55 tua512 ntpd[1554]: kernel time sync enabled 2107
Mar 29 03:26:23 tua512 ntpd[1554]: clock GPS_NMEA(1) event 'clk_fault' (0x03)
Mar 29 03:27:18 tua512 ntpd[1554]: pps sync disabled
Mar 29 03:27:27 tua512 ntpd[1554]: synchronized to 192.168.0.1, stratum 3
Mar 29 03:27:28 tua512 ntpd[1554]: synchronized to GPS_NMEA(1), stratum 0
Mar 29 03:48:02 tua512 ntpd[1554]: kernel time sync disabled 2307
Mar 29 03:48:57 tua512 ntpd[1554]: pps sync disabled
Mar 29 03:49:07 tua512 ntpd[1554]: kernel time sync enabled 2107
Mar 29 04:20:10 tua512 ntpd[1554]: clock GPS_NMEA(1) event 'clk_fault' (0x03)
Mar 29 04:20:52 tua512 ntpd[1554]: synchronized to 192.168.0.1, stratum 3
Mar 29 04:21:16 tua512 ntpd[1554]: synchronized to GPS_NMEA(1), stratum 0
Mar 29 04:23:23 tua512 ntpd[1554]: kernel time sync disabled 2307
Mar 29 04:24:19 tua512 ntpd[1554]: pps sync disabled
Mar 29 04:24:26 tua512 ntpd[1554]: kernel time sync enabled 2107
Mar 29 04:44:48 tua512 ntpd[1554]: kernel time sync disabled 2307
Mar 29 04:45:45 tua512 ntpd[1554]: pps sync disabled
Mar 29 04:45:54 tua512 ntpd[1554]: kernel time sync enabled 2107
Mar 29 04:59:55 tua512 ntpd[1554]: clock GPS_NMEA(1) event 'clk_fault' (0x03)
Mar 29 05:00:50 tua512 ntpd[1554]: pps sync disabled
Mar 29 05:01:00 tua512 ntpd[1554]: synchronized to 192.168.0.1, stratum 3
Mar 29 05:01:01 tua512 ntpd[1554]: clock GPS_NMEA(1) event 'clk_fault' (0x03)
Mar 29 05:02:05 tua512 ntpd[1554]: synchronized to GPS_NMEA(1), stratum 0
Mar 29 05:06:21 tua512 ntpd[1554]: kernel time sync disabled 2307
Mar 29 05:07:16 tua512 ntpd[1554]: pps sync disabled
Mar 29 05:07:24 tua512 ntpd[1554]: kernel time sync enabled 2107
Mar 29 06:20:23 tua512 ntpd[1554]: clock GPS_NMEA(1) event 'clk_fault' (0x03)
Mar 29 06:21:18 tua512 ntpd[1554]: pps sync disabled
Mar 29 06:21:28 tua512 ntpd[1554]: synchronized to 192.168.0.1, stratum 3
Mar 29 06:21:29 tua512 ntpd[1554]: clock GPS_NMEA(1) event 'clk_fault' (0x03)
Mar 29 06:22:35 tua512 ntpd[1554]: synchronized to GPS_NMEA(1), stratum 0
Mar 29 06:38:54 tua512 ntpd[1554]: clock GPS_NMEA(1) event 'clk_fault' (0x03)
Mar 29 06:39:48 tua512 ntpd[1554]: pps sync disabled
Mar 29 06:39:59 tua512 ntpd[1554]: synchronized to 192.168.0.1, stratum 3
Mar 29 06:40:00 tua512 ntpd[1554]: clock GPS_NMEA(1) event 'clk_fault' (0x03)
Mar 29 06:41:06 tua512 ntpd[1554]: clock GPS_NMEA(1) event 'clk_fault' (0x03)
Mar 29 06:42:11 tua512 ntpd[1554]: synchronized to GPS_NMEA(1), stratum 0
Mar 29 06:44:11 tua512 ntpd[1554]: pps sync disabled
Mar 29 07:00:24 tua512 ntpd[1554]: clock GPS_NMEA(1) event 'clk_fault' (0x03)
Mar 29 07:01:18 tua512 ntpd[1554]: pps sync disabled
Mar 29 07:01:26 tua512 ntpd[1554]: synchronized to 192.168.0.1, stratum 3
Mar 29 07:01:27 tua512 ntpd[1554]: synchronized to GPS_NMEA(1), stratum 0
Mar 29 07:03:34 tua512 ntpd[1554]: kernel time sync disabled 2307
Mar 29 07:04:31 tua512 ntpd[1554]: pps sync disabled
Mar 29 07:04:37 tua512 ntpd[1554]: kernel time sync enabled 2107




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