[email protected] said: > I would like to amend the question: does anybody run a NTP server which > does not depend on GPS?
There are lots of stratum 2 servers in the pool. If you have a good network connection and pick your primary servers carefully you can be within 1 ms most of the time. (If you have lots of buffer bloat you can be way off.) > For example, the Rb oscillators are not prohibitedly expensive, so it > should be possible to have a battery-backed atomic oscillator together with > GPS time source, and - in paranoid mode - synchronize the time from GPS only > once, and then use the local oscillator, possibly with triggering an alarm > when the GPS time and the oscillator-based time diverges too much. I don't remember any stories of any setups like that. A PPS signal needs some way to number the seconds. It would be easy to setup if you had a GPS or network connection to calibrate the offset. Just divide by whatever to get a PPS with an arbitrary offset and then tune the fudge factor to get the right answer, that is make it agree with a reference. -- These are my opinions. I hate spam. _______________________________________________ pool mailing list [email protected] http://lists.ntp.org/listinfo/pool
