城乡有线数字电视在模数转换实践中技术问题分析

数字电视转换已经全面开展起来，主要介绍数模混合信号传输的特点及现阶段数字电视转换网络升级构造后城乡的网络特征，结合转换维护过程中的故障实例对数字电视整体转换在城乡实现中的技术问题做出分析，并对故障作了一定的总结，希望为城乡数字电视整体转换提供一些可参考的资料，以便更好更快更顺利地完成数字电视整体平移与日常维护。

The Technical Analysis of Urban-rural Cable Digital TV in D/A Conversion Practice

Digital TV conversion has been fully carried out nowadays. This article mainly introduces the characteristics of mixed signal transmission of both digital and simulation, the network features of urban-rural digital TV conversion. Besides, combining with the examples in the conversion and maintenance, this article gives an analysis of technical problems during the urban-rural digital TV conversion and also makes a sum-up about the malfunction. Hope this article could provide some reference to the whole urban-rural digital TV conversion, and help to complete digital TV conversion and daily maintenance smoothly.