ADE CK 1700 Bedienungsanleitung Seite 41

The device then switches to receiving-mode, during
which the number of radio waves indicates the quality
of the reception: The more radio waves shown on the
display, the better is the reception.
As soon as the time signal has been received in sufficient strength,
the display also shows
‚ the time,
‚ the day of the week, and
‚ the date.
The radio-controlled alarm clock automatically switches to
reception several times every night. During this process, the
displayed time is compared with that received from the time
signal transmitter and, if necessary, corrected.
If a sufficiently strong signal has not been received, the radio-
controlled alarm clock will cancel the receiving process after a
few minutes and the radio tower symbol goes out. The receiving
process is started again at a later point in time. In this case, the
time proceeds as usual (beginning with the start time of "00:00").
DCF Radio-controlled alarm clock CK 1700
41