From: "jim s" <[email protected]>
Sent: Friday, February 18, 2011 7:12 AM
To: "Discussion of precise time and frequency measurement"
<[email protected]>
Subject: Re: [time-nuts] Garmin 18x, new firmware Ver 3.60, NOT
recommended for Time Nuts!
I am curious what software and version you are running with these.
Personally, I'm running the 3.50 firmware, with the device connected to a
Windows-7 PC running NTP - (ntpd 4.2.7p97). The software is configured to
use just the PPS signal from the GPS, with the "seconds" being taken from
other servers. One of those other servers is a FreeBSD system connected
to a GPS 18 LVC mounted on the roof, which I trust! You can see the
performance of both systems here:
http://www.satsignal.eu/mrtg/performance_ntp.php
The FreeBSD/GPS 18 LVC is PC Pixie, and the Windows-7/18x system is
Stamsund - not a primary server but interesting to see just what Windows
can do - it's mostly well within about fifty microseconds. The FreeBSD
system is within about 10 microseconds. On both, you can see the effect
of the heating switching on just before 06:00 UTC quite clearly!
Cheers,
David
--
SatSignal software - quality software written to your requirements
Web: http://www.satsignal.eu
Email: [email protected]
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