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hygro-station. If this does not happen after 2 minutes, the batteries
will need to be removed from all the units and reset from step 1.
7.
Insert the batteries in the third transmitter as soon as the "channel
2" icon and outdoor data are displayed on the thermo-hygro-station.
Then within 2 minutes, the channel 3 outdoor data from the third
transmitter will be displayed and the channel icon will shift back to
"1" once the third transmitter is successfully received. If this is not
happen, user shall restart the setting up from step 1.
Note :
User shall insert the batteries into the third transmitter within
45 seconds after the thermo-hygro-station displays the information
of the first transmitter or immediately after reception of the second
transmitter is finished.
8.
In order to ensure sufficient 868 MHz transmission however, the
distance between the thermo-hygro-station and the transmitter
should not be more than 100 meters (see notes on “
Positioning
”
and “
868 MHz reception
”).
IMPORTANT:
Transmission problems will arise if the setting for additional sensors is not
followed as described above. Should transmission problems occur, it is
necessary to remove the batteries from all units and start again the set-up
from step 1.
DCF RADIO CONTROLLED TIME
The time base for the radio controlled time is a Cesium Atomic Clock
operated by the Physikalisch Technische Bundesanstalt Braunschweig
which 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. Your radio-controlled thermo-hygro-station
receives this signal and converts it to show the precise time in summer or
wintertime.
The quality of the reception depends greatly on the geographic location.
In normal cases, there should be no reception problems within a 1500km
radius of Frankfurt.
DCF reception is done twice daily at 02:00 and 03:00 am. If the reception
is not successful at 03:00 am, then the next reception takes place the
next hour and so on until 06:00am, or until the reception is successful. If
the reception is not successful at 06:00 am, then the next attempt will
take place the next day at 02:00 am.
