环境温度对电缆有线电视的影响及对策

The impacts and countermeasures of environmental temperature to cable television ratio,strategy

分析了环境温度对电缆系统电平的影响以及对信号载噪比的影响,针对较短距离、长距离、较长距离传输信号,提出了设计方法,探讨了用人工调试信号电平的方法等应对环境温度变化影响系统指标的策略。

This article focuses on the influence which is environmental temperature to the level of cable systems,as well as the signal carrier to noise ratio.The design method of transmission signal is proposed for the short distance,long or longer distance,the system index strategy is used which is debugging by artificial signal levels to response to environmental temperature changes.