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随着科学技术的快速发展,我国有线电视数字化的改造进程随之加快。在这样的背景下,人们的娱乐生活也不断丰富,而有线数字电视网络的覆盖则为我国人民提供了丰富多彩且高质量的电视节目。现金的HFC网路担负着模拟和数字电视信号的传输任务,并且大部分是采用的多级光纤链路级联和树型电缆分配的网络拓扑结构,这就意味着所有的信号都需要有前端通过光纤和同轴电缆向下传输,这种模式的网络结构过于复杂,而且传输的可靠性不高,维护起来也比较困难。本文主要对有线数字电视网络技术较常出现的一些故障进行分析,并提出了有针对性的解决措施。
With the rapid development of science and technology, the transformation of China’s digital cable television has been accelerated. In this context, people’s entertainment life is also continuously enriched, while the coverage of the cable digital television network provides rich and colorful television programs to our people. The HFC network of cash carries the task of transmitting analogue and digital television signals, and most of them are network topologies using multi-level fiber optic link cascading and tree cable distribution, which means that all signals require a front end Through the optical fiber and coaxial cable down transmission, this model of the network structure is too complicated, and transmission reliability is not high, it is more difficult to maintain. This article mainly analyzes some troubles that appear frequently in the cable digital television network technology, and puts forward the pertinent solutions.