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AANEM Connect | Ground electrode View modes: 
James Domingue - 10/19/2020 5:55:59 PM
Ground electrode
We need a ground electrode to provide a safe path for leakage current away from our patients. But why, given that we are using differential amplifiers with very high CMRR's, is the 60 hz artifact so overwhelming when the ground electrode is disconnected. You would think that the effects of extraneous 60 hz interference would be equal to the two pre amplifier inputs and thus cancel.

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