Casio Wave Ceptor is a line of radio watches by Casio. Wave Ceptor watches set themselves to the correct time by receiving time signals from various government time services around the world. These signals transmit the time measured by atomic clocks accurate to one second in millions of years; by synchronizing daily with the signals, the Wave Ceptor watches achieve high accuracy, running with quartz timekeeping accuracy between synchronizations. Some radio watches, including some Wave Ceptors, are solar-powered, supported by a rechargeable battery^[1] with a lifetime of about 10 years; such a watch should keep perfect time for about ten years with no adjustment. Some models have a fully digital display; others have hands to indicate the time.

Radio-controlled watches require no setting of time, date, or daylight saving time; they attempt automatic synchronization at least once every 24 hours, usually in the middle of the night. Free-running Wave Ceptors, like other commercial quartz timepieces, are typically accurate to better than 15 seconds per month; daily synchronization ensures 500 ms per day accuracy. Watches a long distance from a time signal transmitter although within the stated range may be unable to receive the signal.^{[citation needed]}

The number of receivers which the watches can tune to vary according to watch model; most current watches can tune to several signals around the world. In Europe the claimed reception range is approximately 1,500 kilometres.

Locations[edit]

Casio watches synchronise to radio time signals from one or more of six low frequency time signal transmitters. The 60kHz signals from different transmitters are not compatible with each other; a watch designed for WWVB only cannot receive MSF.

Japan

Watches can receive signals from two JJY transmitters:

The 40kHz signal from Mount Otakadoya, near Fukushima (Ohtakadoyayama).

The 60kHz signal from the Haganeyama Transmitter at Mount Hagane (Haganeyama).

China

Watches receive the 68kHz signal from BPC at Shangqiu.

United States

Watches receive the 60kHz signal from WWVB at Fort Collins.

United Kingdom

Watches receive the 60kHz MSF at Anthorn.

Germany

Watches receive the 77.5kHz DCF77 at Mainflingen.

As an example, Casio Wave Ceptors using modules 3353 and 3354, such as the WVA-440, can tune to signals from both DCF77 (Germany) and MSF (UK). The two submodels use the same electronics module, but with a soldered jumper selecting preferential tuning first to DCF77, or to MSF. This is default behaviour after a factory reset; the user can choose to use either one of the two transmitters with either module, although this limits use when travelling within Europe.^[1]

Multi-Band 6[edit]

A Casio watch having Multi-Band 6 indicates that it can tune to all the six signals of the low frequency radio towers.^[2][3]Some of the Casio G-Shock line of watches have Multi-Band 6 technology. The predecessor of such technology, called the Multi-Band 5, lacked the capability of receiving the signal of the Chinese radio tower.

Other radio watches[edit]

Japanese manufacturers Seiko and Citizen Watch, and German manufacturers Junghans and Eurochron, also make radio-controlled watches.

See also[edit]

References[edit]

1. ^ ^abCasio: Service manual and parts list, ref. no. S/M-860, for modules QW-3353 and QW-3354, May 2004
2. ^'what is multiband function?'. forums.watchuseek.com. Retrieved 2017-12-17.
3. ^'Multi Band 6 - Watch Technologies CASIO'. Watch Technologies CASIO. Retrieved 2017-12-17.

External links[edit]

• Manuals for Casio watches

The Casio Wave Ceptor digital and analog wristwatches are equipped with sensors that receive regular updates to ensure that the time displayed on your watch is always correct. Accurate timekeeping and handy features like an alarm, stopwatch and countdown timer make the Casio Wave Ceptor watch a great gift for yourself or another. Learning to program and use the Casio Wave Ceptor is simple, leaving you plenty of time for the more important things in life.

'A' Button

The 'A' button on your Casio Wave Ceptor can be pressed to enter and exit the settings screen when programming the time, date and alarm functions of your watch. In Stopwatch mode, the 'A' button is used to start and release the split when measuring split times and to clear the stopwatch. In World Time mode, press the 'A' button to toggle between Daylight Savings Time and Standard Time.

'B' and 'D' Buttons

The 'B' and 'D' buttons on your Casio Wave Ceptor wristwatch are used to increase and decrease number values when setting the time, date and alarm functions on your watch. In Timekeeping mode, press and hold the 'B' and 'D' buttons to turn on the Auto Display feature to set the watch display to auto update. The 'B' and 'D' buttons are also used to scroll through data in the watch's various modes.

'C' Button

The 'C' button on your Casio Wave Ceptor watch is used to scroll through the various modes of the watch. It is also used to advance the flashing when setting the time, data and alarm functions. The 'C' button can also be held down in any of the watch's modes to mute or un-mute the watch's hourly chime.

'D' Button

The 'D' button on your Casio Wave Ceptor digital watch performs a variety of functions on its own. In Timekeeping mode, the 'D' button can be held to initiate a manual watch update. Once started, stop the update at any time by pressing the 'D' button. The 'D' button is also used to toggle through display screens in the Wave Ceptor's various modes. In Stopwatch and Countdown Timer modes, the 'D' button is used to start, pause, restart and stop timing.

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