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机械电子工业部三所、北京中电视声技术联合开发公司胡纯有课题组,在从事辽河油田一个7000户规模、干线传输8km的CATV系统的实践中,总结研究出一种新的设计方法。这种方法的显著特点是:在保证系统的载噪比、交扰调制和相互调制等质量指标的前提下,摆脱了目前系统设计中“>”形曲线的限制,发明了一组新的曲线。按照这组新的曲线,在目
In the practice of CATV system with a scale of 7000 and mainline transmission of 8km in Liaohe Oilfield, Hu Chunzhi, a group of three ministries of Machinery and Electronic Industry and a joint development company of Beijing Zhongzheng TV Acoustic Technology, concluded a new design method. The notable feature of this method is: under the premise of guaranteeing the quality indexes such as carrier-noise ratio, cross-talk modulation and mutual modulation, we get rid of the limitation of “>” curve in current system design and invent a new set of curves . Follow this new set of curves in the head