| 摘要 |
PURPOSE:To enable to return the feedback signal to a relay station, by the code comparison between the code signal set in a relay signal and that set in a feedback signal, and switching control of analog switches based on the result of comparison. CONSTITUTION:In a code set circuit CS, the pushbutton siwtches on the input set panel and relay station set panel are operated to introduce the relay signal from the relay station to the input terminal Ti for the analog switch AS for multidimension broadcast, and the code signal specific to the relay station is stored in the input side memory circuit IM. Next, the pushbutton switches on the output side set panel located in the code set circuit CS is operated to return the feedback signal to the relay station, the output terminal To of the analog switch is designated, and the code signal is stored in the output side memory circuit OM by operating the pushbutton switches on the relay station set panel. The code comparison is made at the code comparator CC. |
