System and method for transmitting digital data

System for transmitting digital data with - an evaluation unit (10), - a plurality of satellite systems (12, 14) connected to the evaluation unit (10) for transmitting data (Data1, Data2) are connected, and - a serial interface (16) between the evaluating unit (10) and the satellite systems (12, 14) characterized, - that synchronization units (18, 20) for synchronizing the transmission clocks of the data transmissions from the satellite systems (12, 14) to the evaluation unit (10) is provided, - that each satellite system (12, 14) a synchronization unit (18, 20) is associated and synchronize the synchronization units (18, 20) detected by the evaluation unit (10) transmit clocks of the satellite system (12, 14) individually on the basis of a system clock (CLK_REF) the evaluation unit (10) without mitzuschicken in a data word, a synchronization signal -.