IEC 61280-4-1-2009 Fibre-optic communication subsystem test procedures – Part 4-1: Installed cable plant – Multimode attenuation measurement (Edition 2.0)
Procédures d'essai des sous-systèmes de télécommunication à fibres optiques – Partie 4-1: Installations c?blées – Mesure de l'affaiblissement en multimodal (Edition 2.0)
This part of IEC 61280-4 is applicable to the measurement of attenuation of installed fibreoptic cabling using multimode fibre@ typically in lengths of up to 2 000 m. This cabling can include multimode fibres@ connectors@ adapters and splices. Cabling design standards such as ISO/IEC 11801@ ISO/IEC 24702 and ISO/IEC 24764 contain specifications for this type of cabling. ISO/IEC 14763-3@ which supports these design standards@ makes reference to the test methods of this standard. In this standard@ the fibre types that are addressed include category A1a (50/125 ??) and A1b (62@5/125 ??) multimode fibres@ as specified in IEC 60793-2-10. The attenuation measurements of the other multimode categories can be made@ using the approaches of this standard@ but the source conditions for the other categories have not been defined.