In testing and loggging the Z3810A, Z3805A, Z3815A, Z3816A, 59503A, 58503B and the 59551A GPS Receivers, all of which sequenced as follows (Note Denver MST) 17:59:59 18:00:00 18:00:01 18:00:01 (at this point the Leap Second indicator was cleared). Chuck Zabilski
From: "[email protected]" <[email protected]> To: [email protected] Sent: Saturday, June 30, 2012 8:02 PM Subject: time-nuts Digest, Vol 96, Issue 3 Send time-nuts mailing list submissions to [email protected] To subscribe or unsubscribe via the World Wide Web, visit https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts or, via email, send a message with subject or body 'help' to [email protected] You can reach the person managing the list at [email protected] When replying, please edit your Subject line so it is more specific than "Re: Contents of time-nuts digest..." Today's Topics: 1. Leap Second on Datum ExacTime 6000...Oh well... (Bert, VE2ZAZ) 2. Re: So, how did you spend your leapsecond? (J. L. Trantham) 3. My leap second capture attempts (Joseph Gray) 4. Re: My leap second capture attempts (Joseph Gray) 5. Re: So, how did you spend your leapsecond? (Pierpaolo Bernardi) 6. Re: Leap second going... (EB4APL) 7. Leap-second on DCF-77 (Paul Boven) ---------------------------------------------------------------------- Message: 1 Date: Sat, 30 Jun 2012 17:44:23 -0700 (PDT) From: "Bert, VE2ZAZ" <[email protected]> To: "[email protected]" <[email protected]> Subject: [time-nuts] Leap Second on Datum ExacTime 6000...Oh well... Message-ID: <[email protected]> Content-Type: text/plain; charset=us-ascii Hi, This is to report the behavior of my Datum ExacTime 6000 unit dealing with the leap second. I think the behavior shows the age of the unit (around year 2000). It has firmware DT102E. - It showed two "58" seconds, that would be the leap second insertion... - It showed a "60" second... what? That made it two leap seconds... - It skipped the "05" second of the following minute to subtract the extraneous leap second added above... I have captured this on video and will likely put that on Youtube for those who may be interested. I captured CHU's audio in the background. By the way, CHU's transmitted data was an extra tick for the "60" second. Regards, Bert, VE2ZAZ ------------------------------ Message: 2 Date: Sat, 30 Jun 2012 19:45:45 -0500 From: "J. L. Trantham" <[email protected]> To: "'Discussion of precise time and frequency measurement'" <[email protected]> Subject: Re: [time-nuts] So, how did you spend your leapsecond? Message-ID: <C590153B648C46358B0CCEAAF91C1CA1@yourb25d9e178c> Content-Type: text/plain; charset="us-ascii" Watched it on my Garmin GPSMAP396 with a 3D fix. It did the 23:59:58, 23:59:59, 23:59:59, 24:00:00 thing. No 60! Joe -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Mark Sims Sent: Saturday, June 30, 2012 7:07 PM To: [email protected] Subject: [time-nuts] So, how did you spend your leapsecond? ? _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ------------------------------ Message: 3 Date: Sat, 30 Jun 2012 18:48:49 -0600 From: Joseph Gray <[email protected]> To: Discussion of precise time and frequency measurement <[email protected]> Subject: [time-nuts] My leap second capture attempts Message-ID: <CAF7oPz0U3s7p56_266QBusZWFVFtdythB-Ye=n7vhyqT6yK=u...@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 Success - Windows 7, running Meinberg NTP. Screen capture of two desktop widgets that I use. In the video, note that 00:00:00 UTC hangs for two seconds. https://dl.dropbox.com/u/19599147/Leap%20Second%202012.m4v Failure - My Galaxy Tab Android tablet, running the GPS Test app. Not only did the GPS Test app not show any indication of a leap second, but it shows both the local date and the UTC date as one day later. The Android clock shows the correct date. Joe Gray W5JG ------------------------------ Message: 4 Date: Sat, 30 Jun 2012 18:51:51 -0600 From: Joseph Gray <[email protected]> To: Discussion of precise time and frequency measurement <[email protected]> Subject: Re: [time-nuts] My leap second capture attempts Message-ID: <caf7opz22x0detkaj4_bhsd7v6uycjzznyda9qkta+gmqpcu...@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 Oh, as an aside to this - I had Netflix paused while I waited for the leap second. The video was fullscreen. At the moment of 00:00:00, the video left fullscreen mode and everything was black. I don't know if this was caused by the leap second, or simply some glitch at the top of the hour, or perhaps at midnight UTC. I'll have to experiment to see if I can reproduce it. Joe Gray W5JG On Sat, Jun 30, 2012 at 6:48 PM, Joseph Gray <[email protected]> wrote: > Success - Windows 7, running Meinberg NTP. Screen capture of two > desktop widgets that I use. In the video, note that 00:00:00 UTC hangs > for two seconds. > > https://dl.dropbox.com/u/19599147/Leap%20Second%202012.m4v > > Failure - My Galaxy Tab Android tablet, running the GPS Test app. Not > only did the GPS Test app not show any indication of a leap second, > but it shows both the local date and the UTC date as one day later. > The Android clock shows the correct date. > > Joe Gray > W5JG ------------------------------ Message: 5 Date: Sun, 1 Jul 2012 02:52:39 +0200 From: Pierpaolo Bernardi <[email protected]> To: Discussion of precise time and frequency measurement <[email protected]> Subject: Re: [time-nuts] So, how did you spend your leapsecond? Message-ID: <cany8u7hkfgxjq0_sfpspvnh_cz6vqjp_eg+xw9r97uc1fci...@mail.gmail.com> Content-Type: text/plain; charset=UTF-8 Watched it on my Garmin Gpsmap 60Cx, which completely ignored it 8^( 2012/7/1, J. L. Trantham <[email protected]>: > Watched it on my Garmin GPSMAP396 with a 3D fix. It did the 23:59:58, > 23:59:59, 23:59:59, 24:00:00 thing. No 60! > > Joe > > -----Original Message----- > From: [email protected] [mailto:[email protected]] On > Behalf Of Mark Sims > Sent: Saturday, June 30, 2012 7:07 PM > To: [email protected] > Subject: [time-nuts] So, how did you spend your leapsecond? > > > ? > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > -- Inviato dal mio dispositivo mobile ------------------------------ Message: 6 Date: Sun, 01 Jul 2012 02:55:04 +0200 From: EB4APL <[email protected]> To: [email protected] Subject: Re: [time-nuts] Leap second going... Message-ID: <[email protected]> Content-Type: text/plain; charset=ISO-8859-1; format=flowed I also saw (and captured a video sequence) of the leap second in NTGS50AA via LH, what a difference from my first encounter with the leap second!. I was working in the frequency timing subsystem of a Deep Space Tracking Facility when NASA decided to introduce the leap seconds, I don't remember it exactly but maybe we were using GMT because until then, we used to offset our Cs and Rb frequency at the beginning of each year (did you notice the thumbwheels inside these standards?). Our first leap second was in Dec 31 and being this night so special the operations crews were given permission to leave since no any tracking activity were planned. I was in a party and received a call to go to the station to manually introduce the leap second on the system. Our frequency and timing subsystem predated the leap seconds several years so I had to set our redundant clock 1 second late and make a changeover between second 00 and 01 so the second 00 was 2 seconds long. Good old times ... Best regards, Ignacio, EB4APL On 01/07/2012 2:07, Dan Rae wrote: > Just to say it did work with LH: > > dr > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. ------------------------------ Message: 7 Date: Sun, 01 Jul 2012 04:02:29 +0200 From: Paul Boven <[email protected]> To: Discussion of precise time and frequency measurement <[email protected]> Subject: [time-nuts] Leap-second on DCF-77 Message-ID: <[email protected]> Content-Type: text/plain; charset="iso-8859-1"; Format="flowed" Hi folks, The leap second was of course broadcast by the German DCF-77 station, and this went perfectly, as expected. At 1AM (CEST) the 'Leap Second Announcement' bit was set to high in the 19th second of the datagram. The leapsecond itself was broadcast by not modulating[1] the 59th second (which is normally silent to mark the end of the minute), and instead the carrier was silent on the 60th second. And in the 19th second of the new minute, the leap second announcement was gone again. Recorded all this on a DCF-receiver I designed and built over a decade ago, and still works great. Might even get around to putting it in an enclosure before the next leap-second ;-) Small movie: http://epboven.home.xs4all.nl/ls-2012.html Regards, Paul Boven - 73 de PEaNUT [1] DCF-77 seconds are transmitted by reducing the output power of the transmitter for 1/10th (a zero) or 2/10th (a one). There is also a phase-modulation on the signal which my receiver doesn't use. -------------- next part -------------- A non-text attachment was scrubbed... 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