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 IEC 标准的要求而应满足的最低初始测试和测量要求以及严重性。要求涵盖平衡双向非连接单模 1 ?? N 和 2 ?? N 个非波长选择性分支设备，用于 IEC C 类环境（N 是分支端口的数量）@ 特别但不专门用于 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，正常距离 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；然而@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 61753-031-2:2014 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 requirement of this IEC standard. The requirements cover balanced bidirectional non-connectorized single-mode 1 x N and 2 x N non wavelength-selective branching devices for use in an IEC Category C 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 1 x 2 and 2 x 2 devices because they are the most commonly used. Keywords: non-wavelength selective branching device (NWBD), IEC Category C environment
英文名称Fibre optic interconnecting devices and passive components - Performance standard - Part 031-2: Non-connectorized single-mode 1 × N and 2 × N non-wavelength-selective branching devices for Category C - Controlled environment