Running with an Oncore GPS & a TAPR TAC. If I "ntpdate -b" a nearby
synchronized server before I start ntpd, the offsets initially look pretty
good:
remote refid st t when poll reach delay offset jitter
==============================================================================
GPS_ONCORE(0) .GPS. 0 l - 16 0 0.000 0.000 0.000
time-C.timefreq .ACTS. 1 u 39 64 1 37.534 -11.785 0.001
ntp-nasa.arc.na .GPS. 1 u 38 64 1 19.868 -0.948 0.001
As time goes on, things start to get crazier:
remote refid st t when poll reach delay offset jitter
==============================================================================
xGPS_ONCORE(0) .GPS. 0 l 6 16 377 0.000 -999.97 0.003
time-C.timefreq .ACTS. 1 u 50 64 3 37.370 -16011. 0.080
ntp-nasa.arc.na .GPS. 1 u 52 64 3 19.823 -16000. 0.046
More time with 100% reachability:
remote refid st t when poll reach delay offset jitter
==============================================================================
xGPS_ONCORE(0) .GPS. 0 l 5 16 377 0.000 -15999. 0.002
+time-C.timefreq .ACTS. 1 u 19 64 377 37.887 -16011. 0.122
*ntp-nasa.arc.na .GPS. 1 u 24 64 377 19.760 -16000. 0.027
Finally after 30 minutes, a lock and convergence, but still big offsets:
remote refid st t when poll reach delay offset jitter
==============================================================================
oGPS_ONCORE(0) .GPS. 0 l 4 16 377 0.000 172.425 34.702
+time-C.timefreq .ACTS. 1 u 29 64 77 37.579 151.544 104.339
*ntp-nasa.arc.na .GPS. 1 u 22 64 77 19.779 165.811 106.581
Is there anything I can do to decrease the convergence time?
_______________________________________________
questions mailing list
[email protected]
http://lists.ntp.org/listinfo/questions
