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为何示波器在最小幅度档位下波形很粗

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由

Zhou, Vera
于 , ,

Q：为什么我的示波器把幅度档位达到最小会得到以下这么粗的信号？
A：这个是示波器的本地噪声，主要是由模拟前端和本地噪声引起的，示波器难以避免本地噪声…

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