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从陕西省气象局大院有线电视维修维护多年的工作中 ,发现很多故障都是由于用户在用料、布线等多方面存在缺陷 ,造成收视清晰度差。故障 1 在室内接入分支、分配器 ,造成电视信号弱 ,雪花点大。有线电视系统设计安装中 ,留给用户的电平在 65 db左右 ,如果用户乱接入分支、分配
From the Shaanxi Provincial Bureau of Meteorology compound cable television repair and maintenance of many years of work and found that many failures are due to users in the material, wiring and other aspects of the existence of defects, resulting in poor viewing clarity. Fault 1 in the indoor access to the branch, distributor, resulting in weak television signals, snow big. Cable TV system design and installation, leaving the user level at about 65 db, if the user chaotic access to the branch, distribution