This part of IEC 62149 covers the performance specification for radio over fibre (RoF) transceivers used for mobile fronthaul systems. The performance standard contains a definition of the product performance requirements together with a series of tests and measurements with clearly defined conditions, severities, and pass/fail criteria. The tests are intended to be run on a once-off basis to prove any product s ability to satisfy the performance standard s requirements. A product that has been shown to meet all the requirements of a performance standard can be declared as complying with the performance standard but should then be controlled by a quality assurance/quality conformance program.