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按照图接法，后面跟0.5~100Hz的贝塞尔带通滤波器，测INA128共模抑制比波形失真，在输入频率很低时，几十Hz时波形会上面一部分被截平，频率变高到100Hz以后波形变得正常。这是为什么？
你好，你说的共模抑制比失真是什么意思？
可以把你说的有问题的波形传上来么？好帮你分析，请说的详细些，谢谢
