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修改时间 10-05-2021 01:27 AM
用泰克示波器探头（10:1衰减）测一个50Hz、幅值2V的正弦信号，示波器采集到50Hz、幅值0.2V的正弦信号（正常），但是数据采集卡采到的仍是幅值2V的波形。是不是因为探头和采集卡之间需要加接什么装置来匹配？大佬们救救孩子……
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