| 摘要 |
The circuit checks errors of a communication apparatus and displays the errors. The circuit includes a RF signal blocking circuit comprising a microstrip line (3) and a condensor (C1) for blocking RF signal transmitted through an RF cable, a surge suppressor comprising a zenor diode (10), a condensor (C2) and a resistor (R2) for suppressing voltage surge generated by abnormal impedance increase of transmission line, a code detector (4) for detecting error, a LED (5) for displaying booster failure, a LED (6) for displaying short circuit of a receiver, a LED (7) for displaying normal operation of a booster, and a LED (8) for displaying operation stop of a booster.
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