IEC 60728-113:2023 电视信号、声音信号和交互服务用电缆网络.第113部分:仅加载数字频道的广播信号传输用光学系统

标准编号：IEC 60728-113:2023

中文名称：电视信号、声音信号和交互服务用电缆网络.第113部分:仅加载数字频道的广播信号传输用光学系统

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

发布日期：2023-05-31

标准范围

IEC 60728-113:2023适用于用于广播信号传输的光传输系统，由头端设备、光传输线、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。本文件规定了前端设备和系统插座之间的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极限。在本文中，信号频率上限被限制为约3 300 MHz。IEC 60728这一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。如果满足本文档中定义的系统的光学部分的性能，则本文档也适用于使用电信网络的广播信号传输。本文档描述了FTTH上全数字化广播和窄播（广播的有限区域分布）信号的RF传输，并介绍了作为物理层介质的xPON系统。物理层的详细描述超出了本文档的范围。范围仅限于FTTH上的下行RF视频信号传输；需要双向光传输系统的IP传输技术，例如IP组播和相关协议，超出了本文档的范围。电信系统和广播系统之间发生的一些干扰效应在条款7中被解决。IEC 60728-113:2023取消并取代2018年发布的第一版和IEC 60728-13-1:20 17。本版构成技术修订版。与上一版相比，此版本包括以下重大技术变更:a)处理FTTH系统上广播信号的带宽扩展的IEC 60728-13-1已与本文档合并；b)添加了包含系统出口数字信号电平的表格。

IEC 60728-113:2023 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 to about 3 300 MHz.
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 performance of the optical portion of the system defined in this document. This document describes RF transmission for fully digitalized broadcast and narrowcast (limited area distribution of broadcast) signals over FTTH, and introduces the xPON system as a physical layer media. The detailed description of the physical layer is out of scope of this document. The scope is limited to downstream RF video signal transmission over FTTH; IP transport technologies, such as IP Multicast and associate protocols, which require a two-way optical transmission system, are out of scope of this document.
Some interference effects occurring between the telecommunication system and the broadcast system are addressed in Clause 7.
IEC 60728-113:2023 cancels and replaces the first edition published in 2018 and IEC 60728-13-1:2017. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) IEC 60728-13-1, which deals with the bandwidth expansion for broadcast signal over FTTH systems, has been merged with this document;
b) a table containing the digital signal level at the system outlet has been added.

标准预览图