"jack" <> wrote in message news:7cc021d3-4ca9-47b3-8ab8-7aa004243...@h10g2000vbm.googlegroups.com... [] > Thank you, David. You're very helpful! > > I ran both my setups over the weekend. The GPS with 1PPS has the worst > offset of 200us and the GPS without jumped up to 80ms, clearly due to > loss of satellite signals. I am happy with the performance of the GPS > with 1PPS out. > > RGB: I have a similar PCI-serial card in my computer. I will try my > GPS with this board and let you know the results. > > Jack
The 80ms could have been due to all sorts of things, particularly with Windows Vista or Windows-7 with certain peripherals, but with the Windows XP you are running it should be reasonably free from odd effects. Certainly, without PPS a pure serial GPS may be no better than using a LAN server. My own XP/GPS/PPS system is usually well within 250us, as you can see here: http://www.satsignal.eu/mrtg/feenix_ntp_2.html That's with a GPS on the roof of the house with a view of about half the sky. Cheers, David _______________________________________________ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions
