Hello, I use an ADS1292R chip as my ECG signal acquisition. In order to get two-channel ECG, I turned off the respiration enable and changed the sampling rate to 1000Hz. However, the ECG waveform of one of my channels shows a lot of noise and the channel originally used for respiration signal acquisition does not collect ECG. I want to know why? The following figure is my two-channel waveform result:
This is the ECG output.
This is the ECG output after the respiration enable is turned off.