标准摘要
[中文适用范围]： IEC 60728的本部分适用于广播信号传输的光传输系统，该系统由头端设备、光传输线路、内部布线和系统插座组成。这些系统主要用于使用数字传输技术的电视和声音信号。本文件规定了头端设备和系统出口之间光分配系统的基本系统参数和测量方法，以评估系统性能及其性能限制。在本文档中，信号频率上限限制在大约 1000 MHz。对于需要更多带宽的系统，请参阅 IEC 60728-13-1。 IEC 60728 这部分的目的是描述用于数字调制广播信号传输的 FTTH（光纤到户）网络的系统规范。如果满足本文件的光学部分，本文件也适用于使用电信网络的广播信号传输。本文档描述了通过 FTTH 实现全数字化广播和窄播（广播的有限区域分布）信号的 RF 传输，并介绍了 xPON 系统作为物理层媒体。物理层的详细描述超出了本文档的范围。范围仅限于 FTTH 上的射频信号传输，因此不包括 IP 传输技术，例如 IP 组播和相关协议。第 7 章阐述了电信系统和广播系统之间的一些干扰描述。 [外文原描述]： IEC 60728-113:2018 is applicable to optical transmission systems for broadcast signal transmission that consist of headend equipment, optical transmission lines, in-house wirings and system outlets. 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 optical distribution systems between headend equipment and system outlets in order to assess the system performance and its performance limits. In this document, the upper signal frequency is limited at about 1 000 MHz. For systems requiring more bandwidth, refer to IEC 60728-13-1. The purpose of this part of IEC 60728 is to describe the system specifications of FTTH (fibre to the home) networks for digitally modulated broadcast signal transmission. This document is also applicable to broadcast signal transmission using a telecommunication network if it satisfies the optical portion of this document. This document describes RF transmission for fully digitalized broadcast and narrowcast (limited area distribution of broadcast) signals over FTTH, and introduces xPON system as a physical layer media. The detailed description of the physical layer is out of the scope of this document. The scope is limited to RF signal transmission over FTTH, thus, it does not include IP transport technologies, such as IP Multicast and associate protocols. Some interference descriptions between the telecommunication system and the broadcast system are addressed in Clause 7.
英文名称Cable networks for television signals, sound signals and interactive services - Part 113: Optical systems for broadcast signal transmissions loaded with digital channels only