Based on the related fundamental theories and laws,the formulas of CTB and CSO are derived. The paper describes CTB/CSO frequency distribution in each channel of 550 MHz bandwidt CATV network in PAL format,and the measurement of CTB/CSO is also discussed.

• 以相关的基本理论、基本定律为依据 ,对有线电视系统的 CTB和 CSO的计算公式进行了论证推导 ,介绍了 550 MHz带宽的有线电视系统在 PAL制式下的 CTB和 CSO的频率分布以及测量方法。