TFA Dostmann 60.2505 Instrucciones De Uso página 10

TFA_No. 60.2505 Anleitung_03_24
Radio-controlled clock
6. Getting started
• Pull off the protection foil on the display.
• Insert the three batteries (3 x 1,5 V AAA). Ensure batteries polarity are correct. Connect the
power adapter to a wall socket. A brief beep tone will sound and all LCD segments will light
up for about 2 seconds. The batteries will operate as a backup power source in case of
power failure.
• Important!
Make sure that your household voltage is 230V! Otherwise your clock may be damaged.
• The clock will now scan the DCF frequency signal and the DCF symbol flashes on the LCD.
When the time code is received successfully after 3-10 minutes, the radio-controlled time is
displayed and the date and the DCF symbol are displayed steadily in the LCD.
• If the reception fails, scanning stops and will be repeated between 1.00 and 5.00 am.
Important: The display will be switched off while scanning the DCF signal.
• Manual initialization can be helpful. Press and hold WAVE button for 3 seconds. The clock
will scan the DCF frequency signal.
• If the clock cannot detect the DCF-signal (for example due to disturbances, transmitting dis-
tance, etc.), the time can be set manually. The clock will then work as a normal quartz clock.
(see 7.1 Manual setting of clock, time zone and calendar).
6.1 Radio-controlled time reception
The time base for the radio-controlled time is a caesium atomic clock operated by the
Physikalisch Technische 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. Changeover from summer time or winter time are 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.
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Radio-controlled clock
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 metres.
• 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 recep-
tion.
• During nighttime, the atmospheric interference is usually less severe and reception is possi-
ble in most cases. A single daily reception is adequate to keep the accuracy deviation below
1 second.
• After the reception of the radio-controlled time you can set the alarm time (see 7.3 Setting of
alarm clock).
7. Operation
• Important: Buttons will not function while scanning DCF signal.
• The instrument will automatically quit the setting mode if no button is pressed within 20 sec-
onds.
• Press and hold UP or DOWN button in the setting mode for fast running.
7.1 Manual setting of clock, time zone and calendar
• Press and hold SET button in normal mode. 00 is flashing. Press UP or DOWN buttons the
time zone (+12/-12).
• The time zone setting is needed for countries where the DCF signal can be received but the
time zone is different from the German time.
• Press SET button to make the settings in the following sequence: Hours, minutes, year,
month and day. Press UP or DOWN button to adjust it.
• Confirm with SET button.
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