CABLE TELEVISION SYSTEM, ITS CENTER DEVICE, ITS AMPLIFIER AND ITS POWER SOURCE SUPPLY SYSTEM

摘要

PROBLEM TO BE SOLVED: To specify and detect a fault place on a CATV transmission line. SOLUTION: At the time of inputting each error information pattern, when an amplifier and a power source device, etc., on a CATV transmission line are broken and fault judging output which is supposed to be outputted at the time to a monitoring device 703, a learning arithmetic control part 7 learn- controlling a neural net judging device 5 based on this. When an amplifier and power source communication control part 809 communicates with the amplifier and the power source device, etc., on the CATV transmission line supplying device at a normal time and fetches error information, the device 5 judges a fault based on this error information. Each fault-judging output terminal of the device 5 is respectively allocated to the amplifier and the power source device, etc., on the CATV transmission line, and a fault amplifier and power source display control part 9 monitors each fault-judging output terminal of the device 5 to display control this on a display 802, when the output shows a fault.