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AFE44x0SPO2EVM GUI v2.0没有波形出来



我电脑是window7,完全按照AFE44x0SPO2EVM User's Guide里36页的说明来 capture,结果没波形出来,我检查了各连接,板子是LED3一直亮的,LED2在点击GUI里的某些功能时会亮,血氧探头红色灯都亮着,我用自己的手指和福禄克血氧模拟器都试过,都没波形,不知道怎么回事。对了,刚安装第一次连接时,有波形毛刺出现,但是有很多对话框提示。后来就再也没波形。