标准摘要
[中文适用范围]： IEC 61280-4-5 适用于使用具有 MPO 接口的测试设备测量和确定已安装的多模和单模光纤布线系统的衰减、极性和长度的情况。该布线系统可包括多模或单模光纤、连接器、适配器、熔接件和其他无源器件。该布线可安装在各种环境中，包括住宅、商业、工业和数据中心场所，以及室外布线环境。本文档涵盖的光纤包括 IEC 60793-2-10 中规定的子类别 A1-OMx（x=2, 3, 4 和 5 (50/125 μm)）多模光纤，以及 IEC 60793-2-50 中规定的类别 B-652 和 B-657 (9/125 μm) 单模光纤。其他多模和单模类别的衰减测量也可使用具有内部或外部光学开关（具有一个 MPO 接口）的光源和功率计 (LSPM) 或光时域反射仪 (OTDR) 进行。由于使用 MPO 接口的并行光应用收发器仅在 850 nm 波长下运行，因此多模测量使用 850 nm 光源；1300 nm 测量为可选。由于用于并行光应用且带有 MPO 接口的收发器在这些波长下运行，因此单模测量使用 1310 nm 和/或 1550 nm 光源。本文档不包括非 exclusively MPO to MPO（即非纯 MPO 到 MPO）的布线描述。 [外文原描述]： IEC 61280-4-5:2020 is applicable to the measurement of attenuation and determination of polarity and length of installed multimode and single-mode optical fibre cabling plant, terminated with MPO connectors, using test equipment having an MPO interface. This cabling plant can include multimode or single-mode optical fibres, connectors, adapters, splices, and other passive devices. The cabling can be installed in a variety of environments including residential, commercial, industrial, and data centre premises, as well as outside plant environments. In this document, the optical fibres that are addressed include sub-categories A1-OMx, where x = 2, 3, 4 and 5 (50/125 μm) multimode optical fibres, as specified in IEC 60793-2-10, and category B-652 and B-657 (9/125 μm) single-mode optical fibres, as specified in IEC 60793-2-50. The attenuation measurements of the other multimode and single-mode categories can also be made using a light source and power meter (LSPM) or optical time domain reflectometer (OTDR) utilising an internal or external optical switch having one MPO interface. Multimode measurements are made with an 850 nm source because transceivers used for parallel optics applications having an MPO interface only operate at 850 nm; 1 300 nm measurements are optional. Single-mode measurements are made with a 1 310 nm and/or 1 550 nm source because transceivers used for parallel optics applications having an MPO interface operate at these wavelengths. This document does not include descriptions of cabling that is not exclusively MPO to MPO. The contents of the corrigendum of January 2022 have been included in this copy.
英文名称Fibre-optic communication subsystem test procedures - Part 4-5: Installed cabling plant - Attenuation measurement of MPO terminated fibre optic cabling plant using test equipment with MPO interfaces