or, "the map is not the territory"? Don Tom Van Baak > Hal, > > The words "insert a pulse" is what causes the confusion in > conjunction with leap seconds. There is no extra or missing > pulse; no double pulse, no early or delayed pulse. > > The 1PPS output continues to give a pulse at a 1 Hz rate > regardless if there is leap second or not. There is never > any ambiguity with TAI or UTC with respect to the pulses > themselves. > > The confusion with terminology arises from the fact that the > implicit or explicit time-of-day string associated with a UTC > time scale does its funny thing around a leap second. If > there is a negative leap second the "23:59:59" label is > missing. If there is a positive leap second the "23"59"60" > is present. You'll also see some GPS receivers or timing > systems use the unofficial trick of labeling "23:59:59" or > "00:00:00" twice rather than using "23:59:60". No matter > how it's done, it's just the label. The pulses still come once > a second. Does that help clarify the situation? > > /tvb > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. >
-- Dr. Don Latham AJ7LL Six Mile Systems LLP 17850 Six Mile Road POB 134 Huson, MT, 59846 VOX 406-626-4304 www.lightningforensics.com www.sixmilesystems.com _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.