By using the A/D transformer with middle low speed two methods of the magnitude sampling are proposed for two types of square wave signals with the middle high frequency in this paper.

• 提出了利用中低速A／D转换器对两类中高频方波信号幅值采样的方法，不仅可以降低仪器成本，而且能有效地避免误采、失码等现象。