第1页共47页编号:时间:2021年x月x日书山有路勤为径,学海无涯苦作舟页码:第1页共47页中兴传输产品用户培训教材中兴智能交通系统(北京)有限公司第2页共47页第1页共47页编号:时间:2021年x月x日书山有路勤为径,学海无涯苦作舟页码:第2页共47页目录第一章光通信概述...................................................................41.1光纤通信概述...................................................................................................................41.1.1光纤通信的三个低损耗窗口................................................................................41.1.2光纤的结构...........................................................................................................41.1.3光纤的分类...........................................................................................................51.2同步数字体系(SDH)....................................................................................................71.2.1SDH简介...............................................................................................................71.2.2SDH的优越性.......................................................................................................71.2.3SDH速率...............................................................................................................81.3SDH传送网的物理拓扑...................................................................................................91.4PCM简介........................................................................................................................121.4.1PCM30/32系统...................................................................................................13第二章ZXSM-600(V2)紧凑型同步数字传输设备.........172.1系统简介.........................................................................................................................172.2信号处理流程.................................................................................................................192.3基本原理.........................................................................................................................202.4单元/单板介绍................................................................................................................232.4.1单板名称列表......................................................................................................232.4.2电源板(PWA,PWB).....................................................................................242.4.3网元控制处理板(NCP)..................................................................................252.4.4系统时钟板(SCB)..........................................................................................282.4.5勤务板(OW)...................................................................................................292.4.6全交叉STM-4光接口板(O4CS)...................................................................292.4.7ETSI映射结构2M支路板(ET1)...................................................................31第3页共47页第2页共47页编号:时间:2021年x月x日书山有路勤为径,学海无涯苦作舟页码:第3页共47页2.4.8支路插座板..........................................................................................................312.5机械结构.................................................................................