目前县级电视台播出电视信号质量问题比较突出。所用设备及技术条件差,造成传输电视信号突然中断或时断时续现象经常发生。为此,有必要及时把下一路信号播出去,避免短 Currently, the quality of television signals broadcast by county-level television stations is quite outstanding. The equipment and technical conditions used are poor, resulting in a sudden interruption of the transmission of television signals or intermittent interruptions. For this reason, it is necessary to broadcast the next signal in time to avoid shortness