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AFE4490接上传感器LED不稳定闪烁



最近使用AFE4990的评估板,开始测得的波形是正常的,后来不知怎么,接上电源可以亮一会,打开测试软件LED开始不稳定闪烁,采集数据的时候跳出对话框如下

想问一下,怎么解决?