论文部分内容阅读
近年来,随着我国有线电视的迅速发展,电缆(光缆)电视设备的需求量日益增加,且要求高、功能全。尽管我国电缆(光缆)电视设备的生产发展很快,基本能满足用户要求,但有的单位系统规模大,要求高,多使用进口设备。在众多的国产和进口前端设备中,究竟选用哪种机型,事关系统质量、经济效益和社会效益等大问题,必须认真对待。本文结合我台选购有线电视前端调制器谈二点体会。 一、充分认识前端设备在CATV系统中的重要作用。 前端乃是CATV系统的中心、系统的心脏,是电缆(光缆)电视系统与“节目源”之间的“接口”,从
In recent years, with the rapid development of China’s cable television, the demand for cable (optical cable) television equipment is increasing day by day, and the requirements are high and the functions are complete. Although China’s cable (optical cable) television equipment production has developed rapidly, the basic can meet user requirements, but some units of large-scale systems, demanding, and more use of imported equipment. Among the many domestically-made and imported front-end equipment, which type of aircraft should be used depends on major issues of quality, economic benefits and social benefits and must be taken seriously. This article combined with my Taiwan Cable TV front modulator talk about two experience. First, fully understand the front-end equipment in the CATV system an important role. The front end is the center of the CATV system and the heart of the system is the “interface” between the cable (cable) television system and the “program source”