随着有线电视在我国的篷勃发展,它在人们的生活当中越发重要。由于我国南北跨度大,造成温度变化大,这给保证正常地传送电视信号干扰很大。常常发生由于温度的变化而扰断网络信号的传输,使设计、安装人员几个月的辛苦随之东流。因此,为保证电视信号的正常传输,每年夏、 With the rapid development of cable television in our country, it is more and more important in people’s life. Due to China’s large north-south span, resulting in large temperature changes, which to ensure the normal transmission of television signals interfere greatly. Often occur due to changes in temperature and interrupt the transmission of network signals, so that designers, installers will be followed by hard work. Therefore, in order to guarantee the normal transmission of the television signal, every summer,