BS EN 61753-124-2. Fibre optic interconnecting devices & passive components. Performance Standard. Part 124-2. Simplex & duplex reference cords with A1a multimode fibre & cylindrical ferrule connectors for Category C. Controlled environment Fibre optic connectors, Fibre optic branching devices, Fibre optics, Performance, Optical communication systems, Fibre optic cables, Optical fibres, Splicing, Performance testing