System of devices for signal transmission between two terminals

A system of devices for signal transmission between two terminals, each of said devices comprising:

• at least one flat ribbon cable (FRC) with a prescribed number of conductors and having a corresponding height, said at least one ERG being positioned between the two terminals and accommodated in a circular cartridge, from which additional cables are attached to the two terminals, said at least one ERG having a length greater than a distance between the two terminals,
• wherein in said each of said devices one of the two terminals is movable relative to the other, and the cartridge comprises,
• a fixed stator and a rotor rotatable round a common axis, and
• wherein the rotor and the fixed stator each have surfaces bordering an acceptor space configured to accept the at least one FRC, and
• further wherein:
• in said each of said devices, independent of said height of the at least one FRC, the cartridge has unchanged outer and inner dimensions for a constant height of the acceptor space, a compensation body having variable height is applied within the acceptor space to at least one of said rotor and said fixed stator, and
• for a variable axial height of the FRC, the axial height of the compensation body is dimensioned such that the respective height of the FRC and the corresponding compensation body together is constant and corresponds to the total axial height of said acceptor space.