Technoline Radio Controlled Alarm Clock with Projection WT 590 Manuale Utente

Note: 
The projector will only project the current time. It will not project the seconds, date or temperature 
information.

  

 

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 every 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. The Projection clock receives this signal and 
converts it to show the precise time and so when within this range the received time is completely accurate.

 

 

The Projection clock will automatically start scanning for the DCF-77 frequency signal after the battery is 
inserted. In normal surroundings (for example away from interfering sources such as TV sets), it takes 
between 3-5 minutes to receive the signal. If after 10 minutes after having inserted the batteries into the 
alarm clock and the DCF-77 signal is not received, then check the following list before manually setting the 
time (see Manual time setting): 
1. 

The distance of the Projection clock should be at least 1.5-2.0 meters away from interfering sources 
such as computer monitors or TV sets. 

2. 

Avoid placing the alarm clock onto or in the immediate proximity of metal, doors, windows frames or 
structures. 

3. 

Within thick concrete rooms such as basements and tower blocks, the DCF-77 signal is naturally 
weaker. In extreme cases, place the alarm clock closer to a window and/or point its front or rear 

 

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