HFC网络反向噪声远程实时监测系统  

Remote Real-Time Monitoring System for Backward Noise on HFC Network

作　　者：戴卫平[1] 李永宁[1] 梁军[1] 

机构地区：[1]广东江门广播电视台网络中心

出　　处：《广播与电视技术》2006年第9期92-94,8,共3页Radio & TV Broadcast Engineering

摘　　要：反向噪声的测试是反向通道维护中的一项重要内容,传统的维护方法是业务运行受到影响后才去测试,或者定期安排值班人员去现场测试,但测试时间的连续性却无法得到保证,特别是反向噪声经常具有突发性,给我们的维护工作带来了极大的困难。为了加强对双向HFC网络反向通道的维护和规范化管理,想方设法改进传统的维护方法在反向噪声监测方面存在不足,在投资比较小的情况下,设计了一套系统,实现对所有光点的反向噪声进行实时监测。Backward noise is also an important factor that can influence the stability of multi-function services in the bi-directional multi-function network. Therefore, in the maintenance of the HFC bi-directional network we have to attach attention to these problems: how in monitor in real time the frequency spectrum in backward channel at every optic node, and quickly find and eliminate faults. However, the traditional maintenance method has disadvantages in terms of backward noise monitoring. The Network Center at Jiangmen Radio and TV Station, therefore, designed a real-time monitoring system for backward noise, thus realizing a real-time monitoring of all optic nodes. The implementation scheme and working principle of this system are explained in detail.

关 键 词：反向噪声 远程实时监测 远程射频控制混合器 

分 类 号：TN943.6[电子电信—信号与信息处理]