| 摘要 |
PURPOSE:To attain signal transmission by a small power radio equipment by using both paths of wired and radio lines for the signal transmission till a reply comes from a call in a supervision control section applying call. CONSTITUTION:Signals A, B from a supervision control section 1 are sent to a wired section 4 of a repeater 3-1 through a cable 2 and a transmitter 5 sends the signals through an antenna 8. The repeater 3-1 receives a signal E to send the signal E from the wired section 4 to the supervision control section 1 through the cable 2. The supervision control section 1 receives the signal E, confirms it to be a signal E through a reply device 3-1-1 and the repeater 3-1 identified corresponding to the signals A, B sent previously thereby recognizing a reply information signal (h) required in the signal E. Thus, the range of the reply device to be located including the transmission path by the small power radio equipment is grasped surely thereby confirming the operation of system. |
