Radio controlled alarm clock
Radio controlled alarm clock
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Radio controlled time reception:
The time base for the radio controlled time is a Caesium Atomic Clock operated by the Physikalisch Tech-
nische 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. 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 radio-controlled clock receives this signal and converts it to show the pre-
cise time in summer or wintertime. In Daylight Saving Time “DST” is shown on the LCD. 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 Frankfurt.
Please take note of the following:
• Recommended distance to any interfering sources like computer monitors or TV sets is a minimum of
1.5 - 2 metres.
• The clock will scan the DCF frequency signal and the DCF symbol flashes on the LCD. When the signal
is received successfully after 3-5 minutes, the radio controlled time and the DCF symbol appear per-
manently.
• The clock automatically receives every day at 2:00 and 3:00 in the morning a radio signal. If the recep-
tion fails, the symbol disappears and scanning stops and will be repeated at 4.00 am and 5.00 am.
• Manual initialization can be helpful. Press and hold ▼ and ▲ button at the same time. A short beep
will sound and the symbol is flashing. If the reception fails, the symbol disappears and scanning stops
and will be repeated in the next three hours (three times).
• Press and hold ▼ and ▲ button at the same time, to stop the initialization and the DCF-reception
symbol disappears.
• In case the clock cannot detect the DCF-signal (for example due to disturbances, transmitting dis-
tance, etc.), the time can be set manually. The clock will then work as a normal quartz clock. (see:
Setting of clock and calendar).
TFA_No. 60.2511_Anleitung_09_16 27.09.2016 15:23 Uhr Seite 15
