数字通信用双轴电缆 第2部分：家族规范 以太网双轴物理接口用电缆

[中文适用范围]： IEC 62783-2:2025 RLV包含官方的IEC国际标准及其红线版本。红线版本仅提供英文版，便于用户快速、直观地比较官方IEC标准与其前一版之间的所有变更。IEC 62783-2:2025规定了用于数字通信系统的双轴（twinax）电缆的定义和要求。本文件涵盖适用于室内的双轴电缆。这些规范旨在支持ISO/IEC/IEEE 8802-3以太网在双轴物理层（PHY）规范中的双轴链路段规范。本文件对单个双轴元件以及同一护套内多个双轴元件（即“双轴电缆”）的要求和传输特性进行了规定。本版取消并替代了2019年发布的首版，构成技术修订。与前一版相比，本版包含以下重大技术变更：a）根据IEC 62783-1:2023中修订后的通用双轴电缆要求进行更新；b）根据最近新增的ISO/IEC/IEEE 8802-3以太网物理接口中的双轴链路段规范进行更新。 [外文原描述]： IEC 62783-2:2025 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC 62783-2:2025 specifies the definitions and requirements of twin-axial (twinax) cables used in digital communication systems. This document covers twinax cable intended to be used indoors. The specifications are intended to support the twinax link segment specifications of the ISO/IEC/IEEE 8802-3 Ethernet over twinax physical layer (PHY) specifications. This document gives requirements and transmission characteristics for a single twinax element as well as for multiple twinax elements within the same sheath, i.e. "twinax cable". This second edition cancels and replaces the first edition published in 2019. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) updating according to the revised generic twinax cable requirements given in IEC 62783 1:2023; b) updating according to new twinax link segment specifications recently added to ISO/IEC/IEEE 8802-3 Ethernet physical interfaces.