art Number: ADS1292R I'm not used to Eng. I can read test signal well. *Sampling rate 250Hz y-axis is mV, x-axis is sample number. But I can't read correct signal from electrodes that were connected with CH1. and the signal was 3Hz-50mVpp-Sine wave from function generator. *Sampling rate 500Hz. y-axis is mV, x-axis is sample number. It is similar 3Hz(three periodic wave in 500 samples, 1 sec) but with only positive polarity. and also the amplitude is not correct. So I changed polarity of input cable. then, ... I want to read whole sine wave. why these error occurs? my schematic is VREF was well measured at 2.42V and register set write_reg(0x01, 0b10000010); write_reg(0x02, 0b10100000); write_reg(0x03, 0b00010000); write_reg(0x04, 0b00000000); write_reg(0x05, 0b10000000); write_reg(0x06, 0b00000000); write_reg(0x07, 0b00000000); write_reg(0x08, 0b00000000); write_reg(0x09, 0b00000000); write_reg(0x0A, 0b00000011); write_reg(0x0B, 0b00000000); plz, help me.
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