电视信号和声音信号及交互服务用电缆网络.第6部分:光学设备

[中文适用范围]： IEC 60728的这一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光学设备的测量方法、性能要求和数据发布要求。这个标准？适用于电缆网络中使用的所有光发射器@接收器@放大器@定向耦合器@隔离器@多路复用设备@连接器和接头； ？覆盖频率范围 5 MHz 至 3 000 MHz；注：3 000 MHz 的上限是一个示例@，但不是严格值。 ？确定某些参数的保证性能要求； ？规定数据发布要求并保证性能； ？描述了一致性测试的测量方法。所有要求和公布的数据都与指定频率范围内和良好匹配条件下的最低性能水平有关，可能适用于电视信号、声音信号和交互式服务的有线网络。 [外文原描述]： IEC 60728-6:2011 lays down the measuring methods, performance requirements and data publication requirements of optical equipment of cable networks for television signals, sound signals and interactive services. This third edition cancels and replaces the second edition published in 2003 of which it constitutes a technical revision. It includes the following significant technical changes with respect to the previous edition: - The normative references were updated. - The methods of measurement for optical power and return loss were substituted by references to other standards. - The method of measurement for polarization dependent loss was deleted. - A method of measurement for carrier-to-crosstalk ratio (CCR) was added. - The methods of measurement for CSO and CTB of optical amplifiers were substituted by a method of measurement for microscopic gain tilt of optical amplifiers. This parameter can be used for calculating the second order distortion of optical amplifiers according to the method described in the new Annex B. New classes for optical transmitters and receivers have been defined.