[time-nuts] looking for low-power system for gps ntptimekeeping NANOSG20
David J Taylor
david-taylor at blueyonder.co.uk
Thu Jul 4 05:27:23 UTC 2013
From: Chris Albertson
The computer itself and the NTP installation are OK because we can see it
syncing to other NTP servers. Likely you have a problem in the way the GPS
using is connected.
Some common errors is an inverted PPS, just flip it ad see if you gets
better, it is really hard to see a 1Hz signal on a scope.
=================================
Any 'scope should be able to see a pule which is high for 100 ms and low for
900 ms! Modern digital scopes even make it easy to see a 100 ns pulse
repeated at 1 second intervals.
Best investment I made recently was a Rigol DS1052E 'scope - so useful for
time-nuts type work. It was /just/ affordable, and it may be even a lower
cost now as a newer model is out.
Cheers,
David
--
SatSignal Software - Quality software written to your requirements
Web: http://www.satsignal.eu
Email: david-taylor at blueyonder.co.uk
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