Radio-Controlled Clock - Grundig Sonoclock 795 DCF Bedienungsanleitung

SETTINGS

Radio-controlled clock

With your built-in radio-controlled
clock, you are in possession of an
absolutely precise alarm and meet-
ing clock which is automatically set
to the radio-transmitted time signals of
the most precise clock in the world:
the atomic clock of the Physikalisch-
Technischen Bundesanstalt (PTB – the
German national metrology institute).
This clock is so precise that in 1 mil-
lion years a deviation of 1 second
can be expected.
Your radio-controlled alarm clock
receives "time telegrams" via long
wave 77.5 kHz from the time signal
transmitter DCF 77, located in Main-
flingen (24 km south-east of Frank-
furt/Main). This time signal transmitter
has a range of 1500 km.
The device receives the station
DCF 77 free of charge via the con-
nected DCF 77 antenna everywhere,
where a sufficient long wave recep-
tion is possible with a good portable
radio. In many cases, your radio
clock receives the time telegrams
from a considerable distance from
the station; however, the local recep-
tion quality plays a significant role
here.
20 ENGLISH
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The installed microprocessor of the
radio-controlled clock processes the
received time telegrams and controls
the quartz clock fully automatically.
After the clock is first activated, the
DCF synchronisation is performed
immediately and subsequently every
day at 2 am and 3 am. Depending
on the point of reception, synchroni-
sation can take several minutes. Dur-
ing this process, the »
flashes, if the signal is strong enough,
in a 1 second rhythm of the received
time telegram. After synchronization
has taken place, the »
begins to light up. If the »
play disappear, the synchronization
was not successful.
In addition to the advantages of the
time precision and the exact, to-the-
second wake-up and alarm signal,
your radio clock sets itself fully auto-
matically from winter time to summer
time.
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