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GQZ工业电视光纤传输系统是上海电信设备六厂新产品.该系统可传送一路彩色(或黑白)电视信号和一路伴音信号,其最大传输距离为3公里.如采用中继方式,其距离可大大延长.它不仅可用于工业部门传送工业电视,教育部门传送闭路电视,而且也可用于电视台传送广播电视. 系统工作原理 GQZ光纤传输系统由光发送机、光接收机、光纤(或光缆)三个部分组成,方框图如下.工业电视的视频信号输入至光发送机经驱动电路对发光器件——发光二极管(LED)进行光强调制(IM),把视频信号转为已
GQZ industrial television optical fiber transmission system is a new product of Shanghai Telecommunication Equipment Co., Ltd. The system can transmit all the way color (or black-and-white) television signals and all the way audio signals with a maximum transmission distance of 3 km. If the relay mode is adopted, the distance can be greatly It can not only be used for industrial transmission of industrial television, the education sector to send closed-circuit television, but also can be used for television broadcasting radio and television. System works GQZ optical transmission system consists of optical transmitter, optical receiver, optical fiber (or cable) three Part of the composition, the block diagram is as follows.Industrial television video signal input to the optical transmitter through the drive circuit light-emitting devices - light-emitting diode (LED) light intensity modulation (IM), the video signal into