alexandros kampolis <[email protected]> wrote: > Most (if not all) use a GPS receiver as a precision time source. This > includes the NMEA messages and the 1 PPS output. > > The question is: can i use the GPS receiver configuration but replace > the receiver with a precision 1 PPS source? I have a quartz frequency > standard that is able to output 1 PPS pulses and i want to use this > instead of the GPS receiver (which i do not have). > > I'm asking this because i do not know if ntpd requires both the NMEA > messages and the 1 PPS pulses to work correct (or to work at all).
Having only a precision 1 PPS source will bring you nothing for time synchronization, because these 1 PPS pulses are not synchronized to UTC. A precision 1 PPS source will tell you exactly how long a second takes, but not when the universally accepted seconds start. _______________________________________________ questions mailing list [email protected] http://lists.ntp.org/listinfo/questions
