Issue with periodical abnormal signal on channel N1P
So I am using a Cyton (v3-32) using the latest firmware, and although I can get signals on most channels, I have a weird periodic abnormal signal on channel N1P (see image or link). This seems to be periodical (every 1000ms), is present even when the electrodes are removed, and is seen across both Mac and PCs running the OpenBCI_GUI (latest version). There is no cross grounding from any of the solder joints, and probing with a meter shows that the signal is real, and is not coming from any other channel. Has anyone else observed this? and if so, how do I get rid of it?
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