| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce crosstalk generated between transmission lines while suppressing time and effort required for work. <P>SOLUTION: A master unit control part 1 outputs test data to a first transmission processing part 2, and makes the first transmission processing part 2 perform packet transmission of a test signal to a dwelling line LA. On the other hand, a slave unit control part 20 in a dwelling slave unit B designates a transmission processing part 21 to perform time division multiplex transmission of an arbitrary transmission signal (for example, video transmission signal). The master unit control part 1 determines the existence and degree of crosstalk from the dwelling line LA to a slave unit connection line LB on the basis of a reception state of the transmission signal received by a second transmission processing part 11. Thereby, taking measures such as selecting paired wires which are not close to each other as the dwelling line LA and the slave unit connection line LB on the basis of the test result enables reduction in the crosstalk. <P>COPYRIGHT: (C)2013,JPO&INPIT |
