Dcf-Reception; A) General Information - Eurochron EFWS 91 i Bedienungsanleitung

10. DCF-RECEPTION

a) General Information

The DCF signal is a signal that is sent by a
transmitter in Mainflingen (near Frankfurt on the
Main). Its range is up to 1500 km, and under
perfect reception conditions even up to
2000 km.
The DCF signal contains, among others, the
precise time (deviation theoretically 1 second in
one million years!) and the date.
This means you do not have to switch manually
between daylight savings time and normal time
at the weather station; the time is adjusted
automatically.
The first DCF reception test is performed when the weather station has completed
the search for the outdoor sensors.
Search for the DCF signal and its evaluation will take several minutes. Do
not move the weather station during this time and do not press any buttons.
More reception attempt are performed at midnight, 00:00, 03:00, 06:00 and
12:00 hours. A single successful reception per day will keep the deviation of the
quartz clock in the weather station below a second.
How well the DCF signal was recognised can be told by the reception display (8):
Icon flashes: Data not recognised
No DCF reception in the last 24 hours
Weak DCF signal but evaluation successful
Perfect DCF signal
51