| 摘要 |
PURPOSE:To deal with the occurrence of abnormality in the assigned district by installing a master control device to control the subcontrol devices corresponding to each district which is formed by dividing a circuit to be measured into plural districts. CONSTITUTION:Data collection and treatment of each kind of pilot signals are performed by the control of a subcontrol device 2 by using a pilot signal measuring device 3. The results are transmitted to the subcontrol unit 2. The subcontrol device 2 analyses a pilot signal and collected data in accordance with the control signal of a main control device 1 and transmits them to the main control device 1. The main control device 1 detects automatically the point where trouble is generated in accordance with the analyzed signal transmitted from each subcontrol device 2. In case abnormality related to >=2 subcontrol device 2 is detected, the main device 2 and measures the desired pilot signal in order from the center. |
