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本文介绍一种新近研制的彩色电视光缆传输设备。本设备是根据国家标准GB1583-79中同轴短程线彩色图象传输标准而研制的,传输距离为2公里,实测结果各项性能均达到要求。本文根据对彩色电视图象传输的技术要求,着重讨论了传输系统的信噪比特性、接收灵敏度、传输距离和非线性失真等参数的选择和计算方法,并扼要介绍了设备的组成和测试结果。
This article describes a newly developed color television cable transmission equipment. The equipment is based on the national standard GB1583-79 coaxial short-range color image transmission standard developed, the transmission distance of 2 km, the measured results of the performance are met. Based on the technical requirements for color TV image transmission, this paper focuses on the selection and calculation of parameters such as signal-to-noise ratio, receiving sensitivity, transmission distance and nonlinear distortion of the transmission system, and briefly introduces the composition of the equipment and the test results .