[ntp:questions] ESR looking for good GPS clocks
George Ross
gdmr at inf.ed.ac.uk
Tue Mar 6 11:49:31 UTC 2012
> Except for the fact that such gps receivers have existed for many year,
> even if they used a serial line interface, i.e. look at (afair) the
> Trimble Palisade driver.
... which I have to say works very nicely. We've had one up on the roof
for quite a few years now. It's a single serial connector from the host
through an interface box to the unit. The driver toggles a control line
(DCD, I think) and the unit sends a timestamp in response. The whole thing
was absolutely no problem at all to get working.
remote refid st t when poll reach delay offset jitter
==============================================================================
abbado.inf.ed.a 129.215.64.32 2 u 45 64 376 0.093 -0.194 0.033
+harnoncourt.inf 193.62.22.90 2 u 28 64 377 0.117 -0.255 0.011
+jarvi.inf.ed.ac 193.62.22.74 2 u 1 64 377 0.102 0.826 0.112
kleiber.inf.ed. 129.215.64.32 2 u 63 64 376 0.213 -0.049 0.016
*GPS_PALISADE(0) .GPS. 0 l 15 16 377 0.000 -0.035 0.004
--
George D M Ross MSc PhD CEng MBCS CITP, University of Edinburgh,
School of Informatics, 10 Crichton Street, Edinburgh, Scotland, EH8 9AB
Mail: gdmr at inf.ed.ac.uk Voice: 0131 650 5147 Fax: 0131 650 6899
PGP: 1024D/AD758CC5 B91E D430 1E0D 5883 EF6A 426C B676 5C2B AD75 8CC5
The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.
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