Hi Alex I rely on it when you say that I do not need to read channel 7 and channel 8 ... I disabled lead off detection. It's not helping. Still channel1,3,5 are bad. I controlled comunication signal with the osciloscope. You can see: at first left yellow=Interrupt; green=clock; at right side in an another timebase at second left yellow=Interrupt; green=chipselect; at right side in an another timebase. I think the signals are correct but half of the channels are not ok. Do you have a hardware with the ADS1299-6 ? Could you please test with the internal test signal if channel are ok with 2kHz?
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