TFA 60.2505 Mode D'emploi page 10

TFA_No. 60.2505 Anleitung_11_19
Radio-controlled clock
Buttons (Fig. 2+3)
G: SNOOZE/BRIGHTNESS button
I. SET button
K: DOWN button
Housing (Fig. 2+3)
M: Battery compartment
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-con-
trolled 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.
18
12.11.2019 14:48 Uhr Seite 10
H: ALARM button
J: UP button
L: WAVE button
N: Power adapter
Radio-controlled clock
• If the clock cannot detect the DCF-signal (for example due to disturbances, transmit-
ting distance, 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.
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 natu-
rally 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 devi-
ation below 1 second.
• After the reception of the radio-controlled time you can set the alarm time (see 7.3
Setting of alarm clock).
19