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我站闭路电视系统所采用的“VX50A”线路放大器,系沈阳无线电十二厂引进西德伟视公司的产品。虽具有广泛的优点,但原设计把保险管安装在机内不合理,造成维修上的很大麻烦。“VX50A”多挂置线杆,常年工作室外,又是日夜通电,尤其雷雨季节,保险易断、更换频繁、无可非议。但每逢更换,麻烦太大。先上杆拆除电源,拔掉
I stand closed-circuit television system used by the “VX50A” line amplifier, the Department of Shenyang Radio Twelve plant to introduce West Germany Wei as the company’s products. Although it has a wide range of advantages, but the original design of the fuse installed in the machine unreasonable, causing great trouble on the maintenance. “VX50A” more hanging rod, perennial work outside, but also day and night power, especially thunderstorm season, the insurance is vulnerable, frequent replacement, beyond reproach. But every change, too much trouble. First remove the power on the pole, unplug it