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SHOW – Radio-controlled projection clock with indoor climate
SHOW – Radio-controlled projection clock with indoor climate
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 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. 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 usually less severe and reception is possible in most cases. A single daily recep-
tion is adequate to keep the accuracy deviation under 1 second.
• Close the battery compartment again.
• The indoor temperature and humidity appear on the display.
6.1 Radio-controlled time reception
• The clock will now scan the DCF frequency signal and the DCF symbol will be flashing on the display.
• Note: To avoid interference, the backlight (and the USB port) turns off during the reception of the radio controlled clock.
• When the time code is received after 3-8 minutes, the backlight is activated and the radio-controlled time will be shown. The DCF
symbol remains on the display .
• If the reception fails, the DCF symbol will disappear and the clock will repeat the reception every 3 hours.
• The DCF reception always takes place at 2:00 in the morning. If the reception is not successfully received, further attempts will be taken
at 3:00 and 4:00 o'clock.
• Activate the reception manually by holding the + button for 3 seconds.
• The backlight will turn off automatically and the DCF symbol will be flashing.
• To end the DCF reception attempt, press the + button again. The DCF reception symbol disappears.
• If the clock cannot detect the DCF-signal (e.g. due to interference, transmitting distance, etc.), the time can be set manually.
• The clock will then work as a normal quartz clock. (see: Manual settings).
TFA_No. 60.5014_Anleitung 17.07.2018 13:28 Uhr Seite 16
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