The concept of effective distortion term was suggested and the distribution of effective 2nd and 3rd distortion terms in a 60-channel PAL-D AM CATV system was evaluated.

• 提出了等效失真项的概念，并对60个PAL-D制频道的光纤调幅有线电视系统计算了等效二阶和等效三阶失真项分布。