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我在官网上购买了AFE4900EVM并下载了相关软件，现在测试spo2波形可以看到，但ECG波形怎么设置都看不到，仿真器和人体测试都试了。请问要怎样才能看到ECG 波形。
Airwill 说：EVM 肯定是经过测试才出售的. 我感觉可能还是你哪里弄错了, 比如设置, 信号连接等, 再检查检查吧
