[time-nuts] looking for low-power system for gps ntp timekeeping NANOSG20
folkert
folkert at vanheusden.com
Wed Jul 3 16:49:48 UTC 2013
Hi,
I decided to buy a Nanos G20. Not too expensive, real serial port,
debian linux pre-installed.
I don't want to sound harsh as the people from Nanos probably did their
best to produce a good product, but for timekeeping it is totally crap
and also useless.
Well, unless I did something wrong.
I recompiled the kernel to enable PPS support, installed gpsd and ntpd,
configured at all and let it run for a while.
allan deviation: http://keetweej.vanheusden.com/~folkert/nanosg20/allandev.png
offset: http://keetweej.vanheusden.com/~folkert/nanosg20.png
remote refid st t when poll reach delay offset jitter
==============================================================================
x127.127.28.0 .NMEA. 0 l 3 16 377 0.000 -994.05 7.857
x127.127.28.1 .PPS. 0 l 7 16 377 0.000 -250.13 572.812
+192.168.64.18 .PPS. 1 u 66 128 377 0.553 -0.055 0.033
*192.168.64.2 .PPS. 1 u 99 128 377 0.237 -0.062 0.039
+192.168.64.168 .PPS. 1 u 44 128 377 0.646 -0.013 0.321
Folkert van Heusden
--
MultiTail na wan makriki wrokosani fu tan luku den logfile nanga san
den commando spiti puru. Piki puru spesrutu sani, wroko nanga difrenti
kroru, tya kon makandra, nanga wan lo moro.
http://www.vanheusden.com/multitail/
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