[time-nuts] Free programs to read NEMA data.
M. Warner Losh
imp at bsdimp.com
Sat Jan 17 20:17:13 EST 2009
In message: <1232236533.26603.8.camel at bg-desktop>
Björn Gabrielsson <bg at lysator.liu.se> writes:
: Hi Warner,
: On Sat, 2009-01-17 at 16:30 -0700, M. Warner Losh wrote:
: > In message: <ca1.4beaaa2e.36a3c0db at aol.com>
: > N3IZN at aol.com writes:
: > :
: > : OK I found my registration for NMEAT. Now that I upgraded my hobby PC I'm
: > : giving it a work out by running as many applications as I can. I have NMEAT
: > : running from a Jupiter GPS engine and I have T-Bolt mon going at the same time.
: > : They are 16 seconds off from each other? I see on Tboltmon there is a field
: > : for UTC offset and 15 seconds is entered there. Any ideas?
: > The current UTC GPS offset is 16, and has been for the last 17 days or
: > so :)
: That is not the view of USNO...
: nor the Meinberg receiver I take care of.
: $ ntpq -c cv timehost.lysator.liu.se | grep gps_utc
: gps_utc_correction="current correction 15 sec, last correction on
: cd068600.00000000 Thu, Jan 1 2009 0:00:00.000",
: However I once had a Jupiter receiver where the NMEA output came 1.0xx
: seconds late or 2.0xx seconds late. Btw, the Jupiter/Zodiac binary was
: much better timed.
Doh! I added two seconds to my internal leap second delta counter.
More information about the time-nuts