| 摘要 |
PURPOSE:To detect early a fault of a subscriber device in a system and to work out a countermeasure by specifying a faulty subscriber number at the side of a base station despite a fault with which radio waves are delivered by mistake and continuously. CONSTITUTION:A transmission output detecting circuit 6 delivers a transmission output detecting signal to a timer 8 to show that the transmisson output is delivered through an antenna 7. Therefore the timer 8 detects that said transmission output detection signal is delivered continuously for a certain period of time or longer. Then the alarm signals is delivered to an identification number generator 10 and a switch circuit 12 through an output terminal. Then the circuit 12 is broken with input of the alarm signal. This cuts, off the electric power to be supplied to a transmission power amplifier circuit 3. The generator 10 is started with input of the alarm signal and delivers its own ID (identification) number to a modulation circuit 2. |
