TFA 30.5049 Bedienungsanleitung Seite 12

TFA_No. 30.5049_Anleitung
Radio-controlled alarm clock with thermo-hygrometer
• The device is ready for use.
• The indoor temperature, the humidity and the corresponding
smiley symbol appear on the display.
4.1 Radio-controlled time reception
• The clock will now scan the DCF frequency signal and the DCF
symbol will be flashing on the display. When the time code is
successfully received after 3-10 minutes, the radio-controlled
time, the date and the DCF symbol will be shown steadily on the
display.
• Press and hold the UP button for 3 seconds to activate the
reception manually. The DCF reception symbol will be flashing.
Interrupt the reception by pressing the UP button again for
three seconds.
• There are three different reception states:
flashing – reception is active
solid – reception is very good
no reception/time is set manually
• The DCF reception always takes place at 2:15 in the morning. If
the reception fails, it will repeat again four times every hour.
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14.02.2019 13:41 Uhr Seite 12
Radio-controlled alarm clock with thermo-hygrometer
• If the clock cannot detect the DCF-signal (e.g. due to inter-
ference, transmitting distance, etc.), the time can be set manu-
ally. The DCF reception symbol disappears and the clock will
then work as a normal quartz clock (see: Manual settings of
time and date).
• The manually set time is overwritten once the DCF time signal is
successfully received.
Note on radio-controlled time
The time base for the radio-controlled time is a caesium atomic clock
operated by the Physikalisch Technische Bundesanstalt based in
Braunschweig (Brunswick), Germany. It has a time deviation of less
than one second in one million years. The time is coded and transmit-
ted from Mainflingen near Frankfurt via the frequency signal DCF-77
(77.5 kHz) and has a transmitting range of approximately 1,500 km.
Your radio clock receives the signal, converts it and always shows the
exact time. The adjustment to Daylight Saving Time (summer/winter
time) is automatic. In Daylight Saving Time "S" is shown on the dis-
play. The reception quality depends mainly on geographic location.
Normally there should be no reception problems within a 1,500 km
radius around Frankfurt.
Therefore, please note the following steps:
• The recommended distance to any interfering sources like com-
puter screens or TV sets is at least 1.5 - 2 meters.
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