Abstract: A method is described for calibrating a vehicle control unit, a data exchange taking place via a voltage supply line connected to the vehicle control unit, as well as a vehicle control unit, which is configured to carry out a data exchange for calibrating the vehicle control unit via a voltage supply line connected to the vehicle control unit with the aid of a communication signal (powerline communication) modulated to the supply voltage. A corresponding measuring and calibration system is also described.

Abstract: A method is described for calibrating a vehicle control unit, a data exchange taking place via a voltage supply line connected to the vehicle control unit, as well as a vehicle control unit, which is configured to carry out a data exchange for calibrating the vehicle control unit via a voltage supply line connected to the vehicle control unit with the aid of a communication signal (powerline communication) modulated to the supply voltage. A corresponding measuring and calibration system is also described.

Abstract: The electronic counter for counting a periodic clock signal generated at a preset clock frequency (f.sub.o) includes a clock circuit generating the periodic clock signal at the preset clock frequency (f.sub.o); an adjustable frequency divider (4) having an output (8), a first input (5) and a second input (7), the first input of the frequency divider (4) being connected to the clock circuit (6) so as to receive the periodic clock signal and the second input (7) of the frequency divider being connected to receive a cycle speed signal (n), the frequency divider (4) containing means to produce a pulsed output signal at a divider output frequency (c.sub.o); a tracking circuit (T) connected to the output (8) of the frequency divider (4) to receive the pulsed output signal at the divider output frequency (c.sub.