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各地方电视台播出的中央电视台节目,一般都是从邮电部微波干线取得信号的,为此,各电视台微波组均有一半人员在邮电部微波站值班。工作实践告诉我们,支线所用的小微波机在工作中并不需要调动各种旋钮,因此,我们自己设计一个“自动开关”放在微波站,实现了无人留守的自动开关机。经过一年多的使用,证明这个开关稳定、可靠。
CCTV programs broadcasted by local television stations generally obtain signals from the microwave main line of the Ministry of Posts and Telecommunications. For this reason, half of the microwave stations in each television station are on duty at the microwave station of the Ministry of Posts and Telecommunications. The work practice tells us that the small microwaves used in the branch line do not need to be transferred to various knobs at work. Therefore, we design an “automatic switch” on the microwave station to realize the automatic switch-off machine left unattended. After more than a year of use, this switch proved to be stable and reliable.