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Chronometer Error, Continued
Minute
Second
50
51
52
53
54
55
56
57
58
59
60
- - - -
-
55
-
- - -
-
-
56
-
-
- -
-
57
-
-
- -
-
-
58
-
59
-
(+DUT)
Other Time Tick All other time signal transmissions, for example, WWV (Ft. Collins,
Available
Colo.), WWVH (Honolulu), CHU (Ottawa, Can.), are broadcast on 2.5, 5,
10, 15, 20, and 25 megahertz and consist of dashes at the beginning of
each second (commencing with the zero second of each minute). DUT is
coded into the first 16 seconds by doubling of the dashes in seconds. 1 to
8 for +0.1s to +0.8s, and in seconds 9 to 16 for -0.1s to -0.8s.
For
example: If DUT = +0.4s, the dashes for seconds 1, 2, 3, 4 would be
double; if DUT = -0.6s, the dashes for seconds 9. 10, 11, 12, 13, 14
would be double.
The upcoming time is announced during the interruption of the audio
frequency. The exact time is taken the instant the audio frequency is
resumed. An example of the voice announcement might be: "THIS IS
RADIO STATION WWV. At the tone, the time will be 8 hours, 50
minutes, coordinated universal time."
5-16
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