Locating the degradation of cable insulation

propagation coefficient has many relations for cable.It is clear that there is more “rough jitter” in the spectrum of the last 500MHz than that of the first 500MHz. This is due to the additional influence produced on the spectrum by the extra capacitance introduced from the cable joint as the result of connection, which leads to distortion of the spectrum to some extent.

传播系数与电缆的关系错综复杂。显而易见，相较于前500MHz频段，后500MHz频段中存在更为显著的‘粗糙抖动’。此现象源于电缆接头连接过程中引入的额外电容对频谱产生的附加影响，在一定程度上导致了频谱的畸变。