Unruh schreef: > If it provides an nema output then you probably can use it to > discipline your clock to of order 10-20ms.
What does "probably can" mean exactly? It only works if the temporal relation between an emitted NMEA sentence and the time it contains is either formally specified or can be determined empirically. The former is almost never the case, the latter may often seem to work, but yields a low level of confidence. As long as I see receivers with highly variable time offsets for their NMEA, I have to regard NMEA as unusable for refclocks. I even consider it unsuitable for "numbering the seconds" of a PPS source, but I own a specimen of a particularly crappy GPS receiver in this respect ;-) N _______________________________________________ questions mailing list [email protected] https://lists.ntp.org/mailman/listinfo/questions
