CORONA – Radio-controlled wall clock with light
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Changeover from summer time or winter time is automatic. The quality of the reception depends mainly
on the geographic location. Normally there should be no reception problems within a 1,500 km radius
around Frankfurt.
Please take note of the following:
• The recommended distance to any interfering sources like computer monitors or TV sets is at least
1.5 - 2 meters.
• Inside ferro-concrete rooms (basements, superstructures), the received signal is naturally weakened.
In extreme cases, please place the unit close to a window to improve the reception.
• During nighttime, the atmospheric interference is usually less severe and reception is possible in
most cases. A single daily reception is adequate to keep the accuracy deviation under 1 second.
6.1.2 WAVE button
• You can start the initialization manually.
• Press and hold the WAVE button for 3 seconds.
• The pointers move to 12 h and the clock will scan the DCF frequency signal again.
6.1.3 SET button - Manual setting of the clock
• If the clock cannot detect the DCF-signal (for example due to disturbances, transmitting distance,
etc.), the time can be set manually. The clock will then work as a normal quartz clock.
• Press and hold the SET button until the desired time is indicated.
• Press the SET button briefly the pointer moves minute by minute.
• The second hand stops.
• After the time is set, the second hand is moving forward again.
• The manually set time will be overwritten by the DCF time when the signal is received successfully.
6.2 Backlight
• Insert three new batteries 1,5 V AA into the battery compartment for the backlight. Make sure the
polarity is correct.
• Move the switch to position ON to activate the backlight.
• Move the switch to position OFF to deactivate the backlight.
• Move the switch to position AUTO and the backlight turns on automatically as soon as the light
sensor registers darkness.
• Alternatively, you can operate the backlight with a suitable power supply.
7. Care and maintenance
•
Clean the instrument with a soft damp cloth. Do not use solvents or scouring agents.
•
Remove the batteries if you do not use the device for a long period of time.
•
Keep the device in a dry place.
7.1 Battery replacement
• Change the batteries when the functions of the instrument become weak.
• Insert a new battery 1,5 V AA into the battery compartment for the movement. Make sure the
polarity is correct.
• Insert three new batteries 1,5 V AA into the battery compartment for the backlight. Make sure the
polarity is correct.
CORONA – Radio-controlled wall clock with light
╞
Caution!
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Risk of injury:
•
Keep this instrument and the batteries out of the reach of children.
•
Batteries must not be thrown into a fire, short-circuited, taken apart or recharged. Risk of explo-
sion!
•
Batteries contain harmful acids. Low batteries should be changed as soon as possible to prevent
damage caused by leaking. Never use a combination of old and new batteries together, nor bat-
teries of different types.
•
Wear chemical-resistant protective gloves and safety glasses when handling leaking batteries.
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Important information on product safety!
•
Do not place your product near extreme temperatures, vibrations or shocks.
•
Protect it from moisture.
5. Elements
A. Buttons (Fig. 2)
A 1: SET button
A 2: WAVE button
A 3: RESET button
A 4: AUTO/OFF/ON switch
B. Housing (Fig. 2)
B 1: Wall mounting hole
B 2: Battery compartment for the movement
B 3: Battery compartment for the light
B 4: Power adapter
6. Getting started
6.1 Clock
•
Insert a new battery 1,5 V AA into the battery compartment for the movement. Make sure the polarity
is correct.
•
Remove the protective foil.
•
The device is ready for use.
6.1.1 Radio-controlled time reception
• After the initial setup, the pointers show 12 o’clock and the clock is trying to receive the radio sig-
nal for 3 - 8 minutes. When the time code is received, the radio-controlled time will be shown.
• The radio-controlled clock receives daily at 2:00 and at 5.00 o'clock in the morning and at 14.00 and
17.00 o'clock in the afternoon and at 23.00 o'clock at night the signal.
Note for radio-controlled time DCF:
The time base for the radio-controlled time is a caesium atomic clock operated by the Physikalisch Tech-
nische Bundesanstalt Braunschweig. 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 frequency signal DCF-77 (77.5
kHz) and has a transmitting range of approximately 1,500 km. Your radio-controlled clock receives this
signal and converts it to show the precise time.
TFA_No. 60.3519 Anleitung_12_14 22.12.2014 08:58 Uhr Seite 6
