Junghans W 615.97 Bedienungsanleitung Seite 18

Contents
1. Radio technology - The most up-to-date way to keep time
1.1 Usable time signal transmitters
2. Readiness for use
3. Automatic time synchronisation
4. Functions
4.1 Base mode
4.2 Other functions
5. Description of watch functions and how to use them
5.1 Chronograph stopwatch function with split times
5.2 Alarm
5.3 Count-down timer
5.4 2 nd time
5.5 Reception indicator
5.6 Manual time synchronisation (transmitter calls)
5.7 Adjusting time zone
5.8 Setting the language (day of the week display)
6. Restart / getting started
6.1 Manual start
7. General information
8. Technical information
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Page 1. Radio technology -The most up-to-date way to keep time
5,000 years have passed since timekeeping began with sundials. In the interim
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there have been water clocks, the mechanical clocks of the 13
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quartz watches. Now we have the radio-controlled watch.
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A watch that in good reception conditions never goes wrong and never has to
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be set. The Junghans radio-controlled watch is absolutely precise, as it is linked
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by radio frequency to the time control systems of the most accurate clocks in
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the world.
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For Europe this is the Caesium Time Base at the Physikalisch-Technischen
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Bundesanstalt in Braunschweig (Germany's Institute of Natural and
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Engineering Sciences).
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For North America it is the U.S. Commerce Department's Caesium Time Base at
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the National Institute of Standards and Technology (NIST) in Boulder, Colorado.
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For Japan the Ministry of Post and Telecommunication's Caesium Time Base at
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the Commercial Research Laboratory (CRL).
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All of these clocks are so accurate, that they are expected to deviate by no more
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than 1 second in a million years.
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th century and
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