Techno Line WS 8100 Mode D'emploi page 21

RADIO CONTROLLED TIME:
The time base for the radio controlled time is a Cesium wall clock operated by the Physikalisch
Technische Bundesanstalt Braunschweig, which has a time deviation of less than one second in
one million years. The time is coded and transmitted from Mainflingen near Frankfurt via frequency
signal DCF-77 (77.5 kHz) and has a transmitting range of approximately 1,500 km. Your radio-
controlled Timer clock receives this signal and converts it to show the precise time in summer or
wintertime.
The quality of the reception depends greatly on the geographic location. In normal cases, there
should be no reception problems within a 1500km radius of Frankfurt.
Once the indoor temperature is displayed on the timer wall clock, the DCF tower icon in the clock
display will start flashing in the upper right corner. This indicates that the clock has detected that
there is a radio signal present and is trying to receive it. When the time code is received, the DCF
tower becomes permanently lit and the time will be displayed.
Daily DCF reception is done at and 03:00 and 05:00 every day. If the reception at 03:00 is not
successful, then another reception starts at 05:00. If the reception at 05:00 is still not successful,
then the next try takes place at 03:00 next day.
If the tower icon flashes, but does not set the time or the DCF tower does not appear at all, then
please take note of the following:
Recommended distance to any interfering sources like computer monitors or TV sets is a
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minimum of 1.5 - 2 meters.
Within ferro-concrete rooms (basements, superstructures), the received signal is naturally
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weakened. In extreme cases, please place the unit close to a window and/ or point its front
or back towards the Frankfurt transmitter.
During nighttime, the atmospheric disturbances are usually less severe and reception is
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possible in most cases. A single daily reception is adequate to keep the accuracy deviation
below 1 second.
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