| 摘要 |
<p>PURPOSE:To prevent cables from being complicated or incorrectly connected by connecting a 1st input terminal and an output terminal located close to each other to a switching means by means of a 1st and a 2nd signal lines so that the 1st input terminal is connected to the output terminal by a 1st switching operation and the 2nd input terminal is connected to the output terminal by a 2nd switching operation. CONSTITUTION:An input terminal 4 and an output terminal 5 are located close to each other. The input terminal 4 and an input terminal 7A of a switch 7 are connected with a signal line 3A while the output terminal 5 and an output terminal 7C of the switch 7 are connected with a signal line 3B and an input terminal 6 is connected to an input terminal 7B of the switch 7. This switch 7 connects the output terminal 5 either to the input terminal 4 or to the input terminal 6 by a 1st switching operation and connects the output terminal 5 either to the input terminal 6 or to the input terminal 4 by a 2nd switching operation. This prevents the cables from being complicated or incorrectly connected.</p> |
