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430f149软件方法测量信号幅值



信号频率变化范围5-50lk。我的思路是不停检测电压值,然后比较max和当前电压值volt,把大的值给max。但是有个问题,如果此时信号幅值变小一点,max就一直不会变了。一直显示为上个信号的幅值。