标准摘要
[中文适用范围]： IEC 60728的本部分规定了用于电视信号、声音信号和交互服务的有线网络有源宽带设备的测量方法、性能要求和数据发布要求。本文件适用于有线网络中使用的所有放大器；覆盖频率范围 5 MHz 至 3000 MHz；说明 3000 MHz 的上限只是一个示例，并非严格值；适用于单向和双向设备；规定了测量有源设备运行特性的基本方法，以评估该设备的性能；确定制造商要发布的性能规格；规定了某些参数的最低性能要求。 [外文原描述]： IEC 60728-3:2017 specifies the measuring methods, performance requirements and data publication requirements for active wideband equipment of cable networks for television signals, sound signals and interactive services. This fifth edition cancels and replaces the fourth edition published in 2010. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) extension of upper frequency range limit for cable network equipment in the forward path from 1000 MHz to 1218 MHz (optional up to 1794 MHz); b) extension of upper frequency range limit for cable network equipment in the return path from 85 MHz to 204 MHz; c) integration and update of IEC 60728-3-1 content; d) integration and update of the Technical Specification CLC/TS 50083-3-3 content; e) deletion of specifications and test methods for obsolete analogue parameters; f) additional normative references; g) additional terms and definitions and abbreviations.
英文名称Cable networks for television signals, sound signals and interactive services - Part 3: Active wideband equipment for cable networks