TFA_No. 60.2553_Anleitung_04_23
14.04.2023
Radio-controlled alarm clock
A 7:
Alarm symbol
A 8:
DCF reception symbol
A 9:
DST symbol
B: Back (Fig. 2):
B 1:
Alarm ON/OFF switch
B 2:
12/24/YEAR button
B 3:
MIN/DATE/°C/°F button
B 4:
HOUR/MONTH button
B 5:
LOCK/SET switch
B 6:
SENSOR ON/OFF switch
B 7:
SNOOZE/LIGHT button
B 8:
Light sensor
B 9:
Battery compartment
6. Getting started
• Remove the protective film from the display.
• Open the battery compartment and insert three new AAA
1.5 V batteries.
• Close the battery compartment again.
10:57 Uhr
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• The indoor temperature (default °C) appears on the dis-
play.
6.1 Reception of the DCF frequency signal
• The clock will now scan the DCF frequency signal and the
DCF symbol will be flashing on the display.
• When the time code is received after 3-7 minutes, the
radio-controlled time will be shown. The DCF symbol
remains on the display.
• Activate the reception manually by holding the HOUR/
MONTH button for 2 seconds. The clock will now scan
the DCF frequency signal and the DCF symbol flashes.
• To end the DCF reception attempt, press the HOUR/
MONTH button again. The DCF reception symbol dis-
appears.
• The DCF reception always takes place at 2:00 and 3:00
o'clock in the morning. If the reception is not successful-
ly received at 3:00 o'clock, further attempts will be taken
until 5:00 o'clock.
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Radio-controlled alarm clock
• There are 3 different reception states:
Symbol flashing - reception is active
Symbol solid - reception is very good
no symbol - no reception/time was set manual
• If the clock cannot detect the DCF-signal (e.g. due to
interference, transmitting distance, etc.), the time can be
set manually. The DCF reception symbol disappears and
the clock will then work as a normal quartz clock (see:
Manual settings).
Note on radio-controlled time
The time base for the radio-controlled time is a caesium
atomic clock operated by the Physikalisch Technische Bunde-
sanstalt based in Braunschweig (Brunswick), Germany. It has
a time deviation of less than one second in one million years.
The time is coded and transmitted 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 DST is shown on the display. 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
computer screens or TV sets is at least 1.5 - 2 meters.
• Within concrete walls (reinforced with steel) such as
basements, the received signal is naturally weakened. In
extreme cases, please place the unit close to a window to
improve reception.
• During night-time, the atmospheric interference is usual-
ly less severe and reception is possible in most cases. A
single daily reception is adequate to keep the accuracy
deviation under 1 second.
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