> One of the GPS manufacturers has a backwards PPS type signaling. You flap a > signal and it tells you when it saw the transition. You could use that by > flapping a printer port bit. That might let you get the serial connection > over a serial to USB adapter. Unfortunately, I don't remember who does that. > You can probably find it with a linear search of documentation for the > drivers in the NTP package.
Trimble's Acutime (using the palisade driver). Normally it toggles one of
the modem lines (DCD?). You want a recent ntpd, as there was a bug
introduced in the 4.1-4.2 transition and later fixed -- here's what's
reported for our one with ntp-4.2.0.b.20051205 on a Dell PE750 with FC3:
remote refid st t when poll reach delay offset jitter
==============================================================================
*GPS_PALISADE(0) .GPS. 0 l 17 16 377 0.000 -0.017 0.005
(We have another S1 with an MSF clock which prefers to synchronise to this
machine rather than its own local hardware!)
--
Dr George D M Ross, School of Informatics, University of Edinburgh
Kings Buildings, Mayfield Road, Edinburgh, Scotland, EH9 3JZ
Mail: [EMAIL PROTECTED] Voice: +44 131 650 5147 Fax: +44 131 667 7209
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