Richard B. Gilbert a écrit : > > The Garmin GPS18LVC is available for something like $85 US. An Oncore > M12 timing receiver with evaluation circuit board, is available from > http://www.synergy-gps.com/ for around $200 US. The Oncore used to be > made by Motorola; they discontinued it and it is now made by another > manufacturer. I have an Oncore and have found that it works very well. > More expensive receivers are available with metal cases, switches, > blinking lights etc. They may be worth the extra cost; the evaluation > board I bought doesn't even have holes that would permit it to be > mounted in a box. > > Just be certain that the receivers you buy are designed for timing > service rather than navigation and have a Pulse per Second (PPS) output.
According to http://time.qnan.org/, the Garmin GPS18LVC looks fine to me, however I have a few concerns: 1/ I don't want to use my soldering iron. Anyone knows a reseller that provide something similar to the RS-232 interface at http://time.qnan.org/ ? 2/ My servers are shipped with RHEL3, which come with a 2.4 pre-compiled Linux kernel and ntpd. I want to avoid any patching and compilation. What do I need to do to make ntpd read the PPS and the GPS time? Would the serial module (providing /dev/ttys*) and gpsd suffice? Thanks a lot for your help. _______________________________________________ questions mailing list [email protected] https://lists.ntp.isc.org/mailman/listinfo/questions
