[ntp:questions] UTC Time from NMEA receiver one second behind DCF?
David J Taylor
david-taylor at blueyonder.neither-this-bit.nor-this-bit.co.uk
Fri Aug 15 19:24:55 UTC 2008
Harald Brinkmann wrote:
> Just in case anyone is interested: The bug is active again right now
> (2008-08-15T18:27 UTC).
> Here is a sample ntpq -p
> remote refid st t when poll reach delay offset
> LOCAL(0) .LOCL. 10 l 53 64 3 0.000 0.000
> GPS_NMEA(0) .GPS. 3 l 51 64 3 0.000 -987.23
> ptbtime2.ptb.de .PTB. 1 u 51 64 3 70.359 21.022
> Here are a couple of NMEA messages off my Navilock:
> When talking about a workaround I was thinking about a combination of
> statuses that are found in these messages that only occurs when the
> bug is active. Trying to guess the times at which it will strike is
> clearly pointless.
> Nevertheless the Garmin unit is on order.
> BTW: I didn't know that ordering GPS units from the U.S. would be
> *that* difficult. :-(
I know it's difficult to judge, but looking at my SiRF-based GPS 60 CSx,
at 19:19 UTC, I could have been persuaded that the time indication did
change 1second after the exact 19:19:00 time (from NTP & a different GPS
Someone will probably tell me that the offset should have been the other
(Yes, some US suppliers don't like "foreign" business - I bought my GPS18
from my own country!).
More information about the questions