| 摘要 |
<p>PURPOSE:To correct the operation of a faulty amplifier automatically by sending an abnormality correcting data from this concentrated monitoring device in response to the sate data discrimination state of the amplifier in the concentrated monitoring device. CONSTITUTION:The operating state of an amplifier 11a is measured by the detection circuit of a detector 12a, a CPU 22 processes the measured value into processed information and is sent to the concentrated monitoring device 13 as incoming signals x1, x2 through a CPU 22, a modulation circuit 23 and a bidirectional filter 24. The concentrated monitoring device 13 discriminates the state information of the amplifier 11a. An alarm is displayed on a display device 14 in the abnormal operating state and the monitoring device 13 sends the abnormality correction data to the CPU 22 of the detector 12a as outgoing signals y1-y3. The CPU 22 issues the correcting command signal to an adjustment circuit 31 to adjust the amplifier 11a into the normal operating state. By this constitution, the abnormal state of the amplifier is corrected quickly and automatically and the manager implements the maintenance and inspection of the CATV transmission network in a latch.</p> |
