数字通信用对绞或星绞多芯对称电缆.第6部分:传输特性小于1000MHz的对绞或星绞对称电缆.工作区域布线.分规范

[中文适用范围]： IEC 61156 的本部分参考了 IEC 61156-1。本文描述的电缆主要用于 ISO/IEC 11801 和 ISO/IEC 24702 中定义的工作区域布线。它涵盖单独屏蔽@公共屏蔽和非屏蔽双绞线或四绞线。电缆的传输特性和频率范围（见表1）规定为20 ??这些电缆可用于同时使用多达四对的各种通信通道。从这个意义上说，本分规范提供了系统开发人员评估新系统所需的电缆特性。本标准涵盖的电缆适用于通信系统中常见的电压和电流。这些电缆不适合与低阻抗源一起使用@例如公用事业干线的电源@它们旨在用于支持低电压和电力应用的传输，例如 IEEE 的 802.3af（供电）以太网）和 802.3at（以太网供电增强版）。 [外文原描述]： IEC 61156-6:2010(E) referes to IEC 61156-1. The cables described herein are intended primarily for work area wiring as defined in ISO/IEC 11801 and ISO/IEC 24702. It covers individually screened, common screened and unscreened pairs or quads. The transmission characteristics and the frequency range of the cables are specified at 20 °C. These cables can be used for various communication channels which use as many as four pairs simultaneously. In this sense, this sectional specification provides the cable characteristics required by system developers to evaluate new systems. It cancels and replaces the second edition published in 2007 and constitutes a technical revision. It includes the following significant technical changes with respect to the previous edition: - new requirements for new cables Cat6A, Cat7A; - revised requirements and tests for the cables. This publication shall be read in conjunction with IEC 61156-1:2009 .