标准摘要
[中文适用范围]： IEC 61753 的这一部分包含非波长选择性分支设备 (NWBD) 为满足本标准要求而应满足的最低初始测试和测量要求以及严重性。这些要求涵盖在 IEC O 类环境中使用的平衡双向非连接单模 1??N 和 2??N 非波长选择性分支设备（N 是分支端口的数量）@ 特别但不排他使用用于PON应用。对于平衡 NWBD@，考虑两个衰减和均匀性性能等级：A 类（高级类），满足更严格的要求（即，用于长距离 PON 应用）；B 类（标准类），用于标准应用（即，普通距离 PON 应用）。这些要求还涵盖不平衡双向非连接单模非波长选择性分支设备@，但不平衡分支设备的规格仅限于 1 ?? 2 和 2 ?? 2 设备，因为它们是最常用的。 [外文原描述]： IEC 61753-031-6:2014 contains the minimum initial tests and measurement requirements and severities which a non-wavelength selective branching device (NWBD) should satisfy in order to be categorized as meeting the requirements of this standard. The requirements cover balanced bidirectional non-connectorized single-mode 1xN and 2xN non-wavelength-selective branching devices for use in an IEC category O environment (N is the number of branching ports), especially but not exclusively used for PON application. For balanced NWBD, two attenuation and uniformity performance classes are considered: - class A (premium class) which meets more restrictive requirements (i.e. for extended reach PON application) and - class B (standard class) for standard application (i.e. normal reach PON application). The requirements also cover unbalanced bidirectional non-connectorized single-mode non-wavelength-selective branching devices, however the specifications of unbalanced branching devices are limited to 1x2 and 2x2 devices because they are the most commonly used. This second edition of IEC 61753-031-6 cancels and replaces the first edition published in 2008 and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: - deletion of the Introduction; - an updated and extended scope to reflect an introduction of two attenuation and uniformity performance classes for balanced NWBD instead of branching device technologies on the market; - an updated list of normative references; - a more simplified introduction to the two types of spectral bands; - Clause 5, Performance requirements, has been updated and extended to reflect the introduction of two attenuation and uniformity performance classes for balanced NWBD; - simplified test items to exclude tests for damp heat (steady state) and impact for performance requirements; - Annex A has been changed to introduce the calculated and minimum requirements for attenuation and uniformity. Keywords: non-wavelength selective branching device (NWBD), IEC category O environment
英文名称Fibre optic interconnecting devices and passive components - Performance standard - Part 031-6: Non-connectorized single-mode 1×N and 2×N non-wavelength-selective branching devices for Category O - Uncontrolled environment