[ntp:questions] 1000s offset between GPS module and NTP servers
Lloyd Dizon
thecarrionkind at gmail.com
Tue Jan 24 20:19:48 UTC 2017
Hi all.
I'm using this GPS module with a MTK3339 chipset. Bought from here:
https://www.adafruit.com/product/790
And I'm using ntpd with have PPS support compiled-in.
Juergen, thanks for pointing out the documentation. I've understood more
about NMEA receivers now.
I've tried Brian's and Juergen's server and fudge configuration, using
time2 to align with the NMEA data-stream and now getting better results.
I don't have a scope, so how do you suggest I determine the correct values
to use for time2 ?
server 127.127.20.0 mode 17 prefer minpoll 4 maxpoll 4
fudge 127.127.20.0 flag1 1 flag3 1 time2 0.500 # pps kernel msg offset .5s
remote refid st t when poll reach delay offset
jitter
==============================================================================
*GPS_NMEA(0) .GPS. 0 l 15 16 377 0.000 -49.176
25.007
+time.sunrise.ne 195.141.230.78 2 u 22 64 377 8.357 114.864
17.534
+192.33.214.47 129.194.21.195 2 u 23 64 377 13.382 115.777
18.286
+ntp0.as34288.ne 85.158.25.74 2 u 32 64 377 6.914 113.929
17.013
+eudyptula.init7 217.147.223.78 3 u 26 64 377 9.683 115.067
17.673
regards.
Lloyd
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