Hi Calex, The signal is hard to receive on a clamp on meter, especially on copper pipe. Based on these captures in the attachment. The excitation signals looks find which indicates the board is working. But there is no receive signal received in these pictures. If you could not see the receive signal in an oscilloscope then the MCU also can not receive the signal. We have an application note talks about implement clamp on meter on a PVC pipe. Customer can refer to it first. https://www.ti.com/lit/pdf/slaa949 Best regards, Cash Hao
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