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In case the clock cannot detect the DCF signal (for example due to disturbances, transmitting
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distance, etc.), the time can be set manually.
The clock will then work as a normal quartz clock. (see: Basic settings / Time and
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calendar).
The radio controlled clock receives the signals at 2:00 and 3:00 o'clock in the morning.
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As soon as the clock has received the DCF signal, the manually set time will be overwritten
As soon as the clock has received the DCF signal, the manually set time will be overwritten
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by the DCF time.
Note that during reception of the radio-controlled clock signal, no communication with the
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USB wireless transceiver is possible or may be briefly interrupted.
The base for the radio controlled time is a Cesium Atomic 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 1500 km. Your logger 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 1,500 km radius around
Recommended distance to any interfering sources like computer
monitors or TV sets is a minimum of 1.5 - 2 meters.
Within ferro-concrete rooms (basements, superstructures), the received signal is naturally
weakened. In extreme cases, please place the unit close to a window and / or point its front
or back towards the Frankfurt
During night-time, the atmospheric disturbances are usually less severe
and reception is possible in most cases. A single daily reception is
adequate to keep the accuracy deviation below 1 second.
Note for Radio Controlled Time DCF:
Frankfurt.
transmitter.
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