Feeder maker and branch line noise test method for main branch amplifier

摘要

In a CATV broadcasting system, a feeder maker for trunk branching amplifiers for performing noise inspection on each branch line connected to a subscriber side and a branch line noise test method using the feeder maker are disclosed.;The feeder maker according to the present invention is characterized by including a high-pass filter.;According to another aspect of the present invention, there is provided a branch line noise testing method comprising: a first step of detecting noise in the main transmission line; A second step of connecting a high pass filter (HPE) to any one of the plurality of branch transmission lines when noises are detected in the first step; A third step of detecting noise in the main transmission line; Removing a high-pass filter connected in a previous step and connecting a high-pass filter in any other branch transmission line among the plurality of branch transmission lines; And a fifth step of continuously repeating the third step and the fourth step.;The present invention can improve the quality of the CATV broadcasting service because the presence or absence of noise on each subscriber side can be checked without interrupting the CATV broadcasting service.