{{tag>[ntp leap second schrikkelseconde]}}


===== 2015 leap second / schrikkelseconde =====
Catching a leap second... 

You can find audio and video at the bottom of the page. Click on the photo's several times to fully zoom in.

====Results====
I recorded the following seconds: 
^System^seconds^Correct^
|Tunderbolt GPSDO|58 59 60 00 01 02|Yes|
|Meinberg LANTIME M200|58 59 59 00 01 02|Yes|
|hopf DCF 7001|58 59 60 01 02 03|No|
|Conrad DCF Time Terminal|58 59 00 01 02 03|No|

====Pictures====
{{::p6301233.jpg?600|Test setup}}\\
Test setup: 
  * Icom IC9100 tranceiver for receiving DCF77 and recording it with a Roland R-05.
  * Laptop with [[http://www.ke5fx.com/heather/readme.htm|Lady Heather]] software as display for the Thunderbolt GPSDO.
  * Conrad DCF Time Terminal
  * Meinberg LANTIME M200
  * hopf DCF 7001
  * Thunderbolt GPSDO

{{:p6301220.jpg?600|Temporary GPS and DCF antenna's}}\\
//Temporary GPS and DCF antenna's.//

{{:p7011368.jpg?600|DCF leap event announced}}\\
//DCF77 leap event announced, notice the D_A (daylight saving time, announce) on the hopf clock.//

{{:p7011391.jpg?600|During the leap second}}\\
//During the leap second.//

{{:05 tbolt -leap.gif?600|Lady Heather leap second}}\\
//During the leap second, [[http://www.ke5fx.com/heather/readme.htm|Lady Heather software]]//

====Audio====
  * DCF77 Leap second announcement audio (lots of beeps, 110MB) {{::2015-06-30_-_dcf77_leap_announcement.wav|DCF77 Leap second announcement audio (lots of beeps and 110MB)}}
  * DCF77 Leap second audio (lots of beeps, 106MB) {{::2015-06-30_-_dcf77_leap_second.wav|DCF77 Leap second audio (lots of beeps, 106MB)}}
====Video====
  * [[https://www.youtube.com/watch?v=6VkbHjwxvt4|Video on Youtube]]
====Logging====
  * NTP server ntp1.polaire.nl:<code>Jul  1 01:59:59 ntp1 kernel: Clock: inserting leap second 23:59:60 UTC
Jul  1 01:59:59 ntp1 systemd: Time has been changed
Jul  1 02:00:00 ntp1 ntpd[800]: 0.0.0.0 061b 0b leap_event
</code>