This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
这是不正常的情况.
不过中间什么过程没有说明白, 是信号源, 前端电路, 滤波电路, ADC 采样?
可以进一步测量一下各级信号的情况来判断
