[ntp:questions] using both a PPS source and a HBG (dcf-77-like) timesource?
Folkert van Heusden
folkert at vanheusden.com
Mon Jan 14 20:35:31 UTC 2008
> >Ok but the odd thing is: a friend of mine has the exact same garmin 18
> >lvc but not this big offset?
>
> Your PPS isn't working. That could be either hardware or software.
> What OS are you using? What version of ntpd?
> What is your friend using?
linux, 2.6.23 with the PPS patch
ntp-4.2.4p4+dfsg
> How about taking your unit over to his place and seeing if your
> GPS hardware works with his software?
Well the funny thing is, I had forgotten to apply a certain patch which
makes the pps part of the nmea driver work with the linux pps
implementation. Now the statistics are slightly different:
remote refid st t when poll reach delay offset jitter
==============================================================================
+GPS_NMEA(0) .GPS. 0 l 6 16 377 0.000 0.318 0.046 <---
oPPS(0) .PPS. 0 l 2 16 377 0.000 0.315 0.048 <---
-muur.intranet.v .DCFa. 1 u 36 64 377 0.068 -7.474 0.237
xthegateap.intra .SHM. 1 u 20 64 377 0.914 -23.408 0.645
SHM(0) .SHM0. 2 l - 64 0 0.000 0.000 0.001
SHM(1) .SHM1. 2 l - 64 0 0.000 0.000 0.001
SHM(2) .SHM2. 2 l - 64 0 0.000 0.000 0.001
SHM(3) .SHM3. 2 l - 64 0 0.000 0.000 0.001
NTP.MCAST.NET .MCST. 16 u - 64 0 0.000 0.000 0.001
192.168.64.0 .BCST. 16 u - 64 0 0.000 0.000 0.001
-auth1.xs4all.nl 193.79.237.14 2 u 28 64 377 8.190 2.095 0.395
-auth2.xs4all.nl 193.67.79.202 2 u 24 64 377 8.270 -0.789 0.565
-ntp1.nl.uu.net .GPS. 1 u 25 64 377 16.372 1.816 4.882
+chime2.surfnet. .GPS. 1 u 22 64 377 12.467 0.792 0.668
-ntp.networking4 193.190.230.65 2 u 26 64 377 8.980 0.176 0.488
xcolo.farenji.ne 80.127.4.179 2 u 25 64 377 12.830 6.598 0.781
-eu.ntp.your.org 216.218.254.202 2 u 24 64 377 8.420 -1.383 0.266
Folkert van Heusden
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