标准摘要
[中文适用范围]： IEC 61280 的第 4-2 部分适用于使用单模光纤对安装的电缆设施进行衰减和光回波损耗测量的。该电缆设施可包括单模光纤、连接器、适配器、熔接和其他无源器件。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，以及外部线路环境。本标准可应用于所有单模光纤类型，包括 IEC 60793-2-50 中规定的 B 类光纤。本标准的原则可应用于包含分支器件（分路器）的电缆设施，以及在部署无源波长选择组件（如 WDM、CWDM 和 DWDM 器件）的特定波长范围情况。本标准不适用于包含有源器件（如光纤放大器或动态通道均衡器）的电缆设施。 [外文原描述]： IEC 61280-4-2: 2014 is applicable to the measurement of attenuation and optical return loss of installed optical fibre cable plant using single-mode fibre. This cable plant can include single-mode optical fibres, connectors, adapters, splices and other passive devices. The cabling may be installed in a variety of environments including residential, commercial, industrial and data centre premises, as well as outside plant environments. This standard may be applied to all single-mode fibre types including those designated by IEC 60793-2-50 as Class B fibres.The principles of this standard may be applied to cable plants containing branching devices (splitters) and at specific wavelength ranges in situations where passive wavelength selective components are deployed, such as WDMs, CWDM and DWDM devices. This standard is not intended to apply to cable plant that includes active devices such as fibre amplifiers or dynamic channel equalizers. This second edition cancels and replaces the first edition, published in 1999, and constitutes a technical revision. The main changes with respect to the previous edition are listed below: revision of optical time-domain reflectometer (OTDR) measurements; addition of optical return loss (ORL) measurements; addition of informative annexes on measurement uncertainties, OTDR configuration, test cord attenuation verification and spectral attenuation measurement. Keywords: measurement of attenuation and optical return loss of installed optical fibre cable plant using single-mode fibre
英文名称Fibre-optic communication subsystem test procedures - Part 4-2: Installed cable plant - Single-mode attenuation and optical return loss measurement