| 摘要 |
<P>PROBLEM TO BE SOLVED: To automatically correct transmission frequency characteristics of a modulation wave signal of a frequency division multiplex system. <P>SOLUTION: A detector 18 detects another modulation wave signal distributed from a distributor 17, and respectively measures electric power levels of object carrier waves of different two frequencies out of every carriers. A control unit 19 calculates difference values of the measured values of the electric power levels and setting values of the electric power level for every object carriers, and controls a variable equalizer 14 based on a slope of the transmission frequency characteristics shown by the comparison results of the magnitudes of these difference values. <P>COPYRIGHT: (C)2011,JPO&INPIT |
