This part of IEC 60728 lays down the measuring methods@ performance requirements and data publication requirements of optical equipment of cable networks for television signals@ sound signals and interactive services. This standard ? applies to all optical transmitters@ receivers@ amplifiers@ directional couplers@ isolators@ multiplexing devices@ connectors and splices used in cable networks; ? covers the frequency range 5 MHz to 3 000 MHz; NOTE The upper limit of 3 000 MHz is an example@ but not a strict value. ? identifies guaranteed performance requirements for certain parameters; ? lays down data publication requirements with guaranteed performance; ? describes methods of measurement for compliance testing. All requirements and published data relate to minimum performance levels within the specified frequency range and in well-matched conditions as might be applicable to cable networks for television signals@ sound signals and interactive services.