Eurobalise

Fixed-data balise sends a line data telegram to the vehicle.The telegram contains operating information and provides details on the position of the train on the line (reference point). In the fixed-data balise, the line data telegram is stored permanently. This data can be changed by the user at any time, if required.

Variable-data balise. All signal codes corresponding to the possible signal aspects and their associated telegrams are stored in Lineside Equipment Unit (LEU) installed at the trackside. In accordance with the signal aspect, the appropriate telegram is passed on to the variable data balise which in turn transmits it to the train. Variable data balises are connected through point to point cables with LEU that provide both data signal (telegrams) and power supply. The variable-data balise checks the quality level of the data signals received from the LEU and, in case of failure, transmits a default data telegram which is stored in the balise’s non-volatile memory.