Abstract: The equipment includes two connectors for connection to two respective lines, and a multilayer printed circuit, one region of which supports signal processing components, each of the lines including at least two electrical conductors. The printed circuit incorporates essentially inductive electrical links between the connectors and the components. The printed circuit further incorporates metallizations associated with the two connectors which link them respectively to the conductors of the two lines. These metallizations belong to different layers of the printed circuit and are situated facing one another so as to produce capacitive coupling between the two lines so that a fast electromagnetic disturbance arising on one of the lines is diverted to the other line rather than reaching the signal processing components.