| 摘要 |
PURPOSE:To attain operation and confirmation in a short time without any sophisticated knowledge by inputting position information of a realy car so as to assign efficiently a frequency independently of the limitation of the frequency and relay car/relay station. CONSTITUTION:The position information of a relay car and a relay station is inputting a display section 8 by means of a light pen 6. While one set of position of the relay car and the relay station each is indicated by the operation, the information is inputted to a central processing unit 9 via an input/output section 2. The central processing unit 9 forms a reception area of the relay station while storing it in a memory section 5, and the information of the reception area is displayed on the display section 8 via an input/output control section 7 of the position information. When all the position information is inputted, the central processing unit 9 assigns a frequency while comparing the frequency limit value with number of sets of relay cars and its information is displayed on the display section 8 via the input/output control section 7 of the position information. In this case, the decision of enable/disable state of each reception area is displayed clearly at the moment by displaying each reception area in color.
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