Sencor SWS 260 [5/12] Effect of the environment on signal reception

EFFECT OF THE ENVIRONMENT ON SIGNAL RECEPTION OF THE TIME STANDARD DCF77 The clock is controoled 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 stardard can be expected eg 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 3XAAA batteries into the battery compartment according to correct polarity it is marked inside the battery compartment 2 Insert the power adapter into a power socket connect the pwer adapter cable plug into the DC outlet on the rear side of the device 3 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 4 After the main unit receives all the data lnformation about the temperature in the installation location of the external sensor the main unt will start searching for the time standard signal transmitted by the DCF transmitter located in Germany Reception of the signal from the DCF transmitter is indicated on the display of the main unit by the appropriate icons The time standard signal is being received The i icon is flashing After successful reception The i icon is flashing Unsuccessfull reception The icon is not display Additional information Pressing DOWN button on the device in the operating mode will display information about the reception mode and signal strength from the DCF transmitter on the display of the main unit The signal strength of the DCF transmitter is indicated on the display by one weak to three bars strongest during standard use of the device thre are two top three bars signal strength fluctuates shown on the display EN 3

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