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The transmitter is located in Mainflingen near Frankfurt am Main and, with its range of
up to 2000 km, supplies the majority of radio-controlled clocks in western Europe with
the necessary radio signals.
As soon as the radio-controlled clock is supplied with power, it switches to receiving
mode and searches for the signal from the transmitter DCF77. If the time signal is
received in sufficient strength, the display shows the date, time and day of the week.
The radio-controlled clock switches on several times a day and synchronises the time
with the radio signal from the transmitter DCF77. In the event the signal is not received,
e.g. during a strong storm, the device continues to run precisely and then switches to
receiving mode again at the next scheduled time.
Alarm
The device offers the possibility of setting two alarm times independently of each
other. For each alarm time you can specify the days on which it should be active:
‚ Monday to Friday ("M-F" display) or
‚ Saturday to Sunday ("S-S" display) or
‚ Monday to Sunday ("M-S" display).
Setting the alarm time
‚ If there is more than approx. 20 seconds between two pushes of a
button, the setting process automatically ends and you will have to
repeat it.
‚ If you press and hold the
increased or decreased more quickly.
Both alarm times are set in the same way.
1. Keep the
button pressed for a few seconds until "AL 1" appears on the display
and the wake-up hour display flashes.
2. Use the
or
button to set the desired wake-up hour.
3. Press
.
The minute indicator for the alarm time blinks on the display.
4. Use the
or
button to set the desired wake-up minute.
5. Press
.
"M-F", "S-S" or "M-S" flashes on the display.
6. Use the
or
button to set the desired alarm period:
− Monday to Friday ("M-F" display) or
− Saturday to Sunday ("S-S" display) or
− Monday to Sunday ("M-S" display).
7. Press
.
"05" (= default setting 5 minutes) and " " flash on the display.
CK 1927 | CK 2309 XL radio-controlled wall clock
or
buttons, the displayed values will be
Alarm
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