TRANSMITTER STAGE IN A NODE OF A BUS NETWORK FOR GENERATING A BIT SIGNAL CORRESPONDING TO A TRANSMIT SIGNAL AND CORRESPONDING METHOD

摘要

The invention relates to a transmitting stage in a bus node of a bus network, in particular in a bus node of an EIB network, which bus node is coupled to a bus line (Bus+, Bus-), for producing a bit signal that corresponds to a transmission signal that has a series of transmission pulses, which bit signal comprises an active pulse, which has a duration ?t = t1 - t0, wherein t0 indicates the beginning of the active pulse and t1 indicates the end of the active pulse, and which has a pulse depth Ua, and an equalizer pulse following the active pulse, for every transmission pulse, comprising a circuit (A) for producing the active pulse; optionally, a circuit (B) for producing the equalizer pulse; and at least one control circuit (C), which outputs the transmission signal (Utrans) at least to the circuit (A) to produce the active pulse; is characterized in that the pulse depth (Ua) of the active pulse is determined by a predefined reference voltage (Uref), which is independent of the magnitude of the direct-voltage component of the bit signal.