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GPS? Time problems?
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unruh
Dec 27, 2009, 2:30:36 PM12/27/09
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Suddenly my system, connected to a gps source (GPS18lvc) has a much
larger standard deviation than before, and ntp is oscillating ( the rate
oscillates about once an hour with a .01PPM amplitude). (See
www.theory.physics.ubc.ca/chrony/chrony.html and look at the graph for
string near the bottom of the graphs for all the clocks.) The offsets
are fluctuating by about plus or minux 10 usec. Nothing changed
in ntp ( version4.2.4p15), the gps receiver,...
Ie, this just suddenly started. Anyone seen any problems with gps in the
past few days?
larger standard deviation than before, and ntp is oscillating ( the rate
oscillates about once an hour with a .01PPM amplitude). (See
www.theory.physics.ubc.ca/chrony/chrony.html and look at the graph for
string near the bottom of the graphs for all the clocks.) The offsets
are fluctuating by about plus or minux 10 usec. Nothing changed
in ntp ( version4.2.4p15), the gps receiver,...
Ie, this just suddenly started. Anyone seen any problems with gps in the
past few days?
David J Taylor
Dec 27, 2009, 3:58:51 PM12/27/09
to
"unruh" <un...@wormhole.physics.ubc.ca> wrote in message
news:slrnhjfdes...@wormhole.physics.ubc.ca...
news:slrnhjfdes...@wormhole.physics.ubc.ca...
Not with my three PCs - Feenix, Stamsund and Bacchus:
http://www.satsignal.eu/mrtg/daily_ntp.html
but I'm not looking at the 10us level.
Cheers,
David
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