Dcf Reception - Conrad TE635EL Bedienungsanleitung

10. DCF reception

The weather station can receive and evalu-
ate the so-called DCF signal.
This is a signal which is sent by a transmitter
in Mainflingen (near Frankfurt on the Main).
Its range is up to 1500km and if transmission
conditions are ideal even up to 2000km.
Among other things, the DCF signal includes
the precise time (theoretical deviation of 1
second in a million years!) and the date.
This means, of course, that there is no manual
setting of summer and winter time required.
The first DCF signal search is always carried out during the initial start-up (insertion of the
batteries) when the detection and registration of the outdoor sensors has been completed (see
Chapter 9. a) and b)).

The detection of the DCF signal and its evaluation can take several minutes.
Do not move the weather station during that time. Do not press any buttons on
the weather station.
Do not place the weather station next to electric/electronic devices; do not
place it near cables, power sockets or metal parts.
A bad reception can also be caused by e.g. metallised insulated glass,
reinforced concrete construction design, coated special wallpaper or an
installation in cellars.
The normal daily DCF reception attempt and the adjustment of the quartz clock in the weather
station is carried out in the morning at 02.00 a.m. and at 03.00 a.m. If there is no reception until
03.00 a.m, then the station searches for reception signals every full hour until 6.00 a.m. If there
is still no reception until 06.00 a.m., the next reception attempt takes place the following
morning at 02.00 a.m.
A single reception per day is sufficient to keep the daily precision deviation below 1 second.
64
1500 km
2000 km