The method is to measure the cable in transmission and to infer the characteristic of the cable from a set of three pairwise measurements and get the correction factor to correct the measured data.

• 该方法将三条电缆线两两组合成三对，进行三次连续的测量，从而得出电缆线的传输特性和校正因子，对测得的信号进行校正。