Sencor SWS 51 W [3/9] Effect of the environment on signal reception of the time standard dcf77

The device consists of the main unit with a radio controlled clock and one outdoor temperature and humidity measuring unit equipped with a temperature and humidity sensor The measured tempeature is wirelessly transmitted to the main unit and dsiplayed on its display One main unit can connect with max 3 different sensors A replacement sensor can be ordered under the part number SWS THS The main unit is powered by 3XAA batteries the external temperature and humidity sensor is powered by 2X AAA batteries EFFECT OF THE ENVIRONMENT ON SIGNAL RECEPTION OF THE TIME STANDARD DCF77 The clock is controlled by the received signals of the time standard These signals are affected but not limited by the following factors distance between the transmitter and the receiver vicinity of valleys or mountains vicinity of power poles and high voltage power lines vicinity of a highway railway airport etc vicinity of a large construction site reinforced concrete buildings etc vicinity of electrical appliances particularly televisions miscrowave ovens high performance loudspeakers etc devices vicinity of moving motor vehicles vicinity of metal structures and a range of other object facotrs and circumstances not indicated in this short overview Locate the main unit in a location where a strong signal of the time standard can be expectedjeg near a window as far away as posible from large metal buildings structures and electrical devices which are or under certain conditions may be the source of interference for the reception of the time stardard signal For those in a hurry 1 Slide the cover on the rear side of the device s case to open the battery compartment cover and place 3XAA batteries into the battery compartment according to correct polarity it is marked inside the battery compartment 2 Open the transmitter battery cover and insert 2 AAA batteries into the battery compartment according to correct polarity it is marked inside the battery compartment Immediatedly therefafter data will be transmitted from the sensor to the main unit For the purpose of performing the tasks descripbed in this step it is appropriate for the main unit and the external sensor to be located to each other eg on a table EN 2

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