IEC 60728的本部分适用于建筑内用于广播信号传输的光传输系统，包括光发射器、光放大器、分路器、V-ONU等。这些系统主要用于使用数字传输技术的电视和声音信号。本文件规定了楼宇网络接口（BNI）和家庭网络接口（HNI）之间的楼宇内光分配系统的基本系统参数和测量方法，以评估系统的性能及其性能限制。 购买本文件时可获得的所有当前修订均包含在购买本文件中。

This part of IEC 60728 is applicable to in-building optical transmission systems for broadcast signal transmission that consist of optical transmitters, optical amplifiers, splitters, V-ONUs, etc. These systems are primarily intended for television and sound signals using digital transmission technology. This document specifies the basic system parameters and methods of measurement for in-building optical distribution systems between building network interfaces (BNI) and home network interfaces (HNI) in order to assess the system's performance and its performance limits.All current amendments available at time of purchase are included with the purchase of this document.