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乡村有线电视的特点是各村之间相距较远,分布广而散,致使网络干线长,网络故障相对容易发生,维护技术人员有限,维修工作难度相对较大。笔者在长期的实践中发现,如在HFC网1550nm光发系统的末端使用野外式光分路器,在其周围2km左右设置若干光节点,再将光节点接入电缆分配网,尽量扩大光网络的覆盖范围,就可以完美地解决乡村有线电视网络中的问题。
The characteristics of rural cable television are that villages are far apart and distributed widely, causing network trunk to be long and network failure relatively easy to occur. The maintenance technicians are limited and the maintenance work is relatively difficult. The author found in long-term practice, such as HFC network 1550nm optical system at the end of the use of optical splitters in the wild 2km around the set up a number of optical nodes, then the optical node access cable distribution network, try to expand the optical network Coverage, you can perfectly solve the problem of rural cable television network.