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ICS35.200;33.120.01;33.180.01M42;M33YO中华人民共和国通信行业标准YDrr926.2-2009代替YDrr926.2-2001大楼通信综合布线系统第2部分:电缆、光缆技术要求TelecommunicationGenericCablingSystemforBuildingPart2:Cablerequirements(IEC11801Ed.2.1:2008InfonnationTechnology•GenericCablingforCustomerPremisesMOD)2009-06-15发布2009-09-01实施中华人民共和国工业和信息化部发布YDIT926.2-2009目次前言........…….......................................…............................….............…........….........III范围…·2规范性引用文件…..3术语、定义和缩略语………………………………………………………………······························24缆线要求..........................….................…................….........…................................…··74.1概述…………………………………………………………………………………………………..吁4.2对称电缆..................................…..…............••••••••••••••••••....…..•••....…·················74.3对称电缆传输多路信号的附加串音要求…..4.4光缆.........…………………………………………………………………………………………·吵附录A(规范性附录)对称电缆的主要电气性能和传输特性....................…........…····················11附录B(资料性附录)对称电缆的首字母缩写词..............…····················································17附录C(资料性附录)电缆外部串音测试方法…......••••..••••.••••••••••••••••••••••••••••••••.••