Digital transmission requires long cable types that hold the associated voltage drop as low as possible therefore according to eia 485 standard and dmx 512 specification these cdmx cables are with a conductor cross section of at least 022 mm awg 24 a double shielding as demanded by plasa and usitt is reached by the combination of foil and network screen and gives the cdmx an additionally high tensile strength this cable safely attains the required wave resistance between 100 and 120 w