| 摘要 |
PURPOSE:To facilitate the easy switching to a semidouble transmission system for light transmission by providing an internal transmission line and a switch. CONSTITUTION:An end of a twisted pair cable 201 connecting data transmitters 1001 and 1002 is connected to an internal transmission line 1031 via a connector part 1061. The other end of the cable 201 is transmitted to an internal transmission line 1032 via a connector part 1062. Switches 1051 and 1052 are operated with switching so that R1021 and 1022 are connected to the lines 1031 and 1032 respectively. As a result, internal transmission lines 1041 and 1042 are separated from a system and not used. |
