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共用天线电视(CATV)工业的发展,达到并超过二十亿美元收益时,将面临更多的要求。它必须提供较大而较复杂的系统能力,必须把高质量信号分配到较远的对方,并且具有较高的可靠性,必须把增加的成本与新工艺所获得的效益保持平衡。光纤作为一种传输电视信号的新手段,已能满足上述要求,正在使CATV工业产生巨大的变化。在CATV信号输送到系统用户之前,必须将各个不同来源——天线、卫星、播映室、录象磁带等的信号予以收集,并在“顶部”或节目分配中心加以组合,通过干线电缆传送到一个或几
When the CATV industry grows to more than $ 2 billion in revenue, it will face more demands. It must provide larger and more complex system capabilities that must distribute high-quality signals to remote locations with high reliability and must balance the added cost with the benefits of the new process. As a new means of transmitting television signals, optical fiber has been able to meet the above requirements and is revolutionizing the CATV industry. Before the CATV signal is delivered to the system user, signals from various sources - antennas, satellites, studio rooms, video tapes, etc. must be collected and combined at the “top” or program distribution center and transmitted over a mains cable to a Or a few