| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a gap filler device which can facilitate cable laying construction and easily discriminate abnormality of a coaxial cable. SOLUTION: A receiving amplification part 2 and a power amplification part 4 are connected through one coaxial cable 3 to supply electric power from the receiving amplification part 2 to the power amplification part 4, transmit a broadcast signal, and transmit receive a data signal and a control signal of a remote monitor device for state monitoring and control. A control signal is sent from the receiving amplification part 2 and it is judged whether the connected coaxial cable 3 is normal and whether there is a response from the power amplification part 4 within a set time.</p> |
