Tool/software:
Hello,
I am using the ADS1293 as a two channel ECG with RL drive. I am currently sampling at 267 samples per second and the digital filters 3db cutoff are at 55Hz.
I am exploring using the AC lead off detection. I am wondering if there is any way to set the AC frequency above my Nyquist frequency and be able to filter out the AC Lead off drive from the ECG signal.
Or do I need to set the AC frequency below my Nyquist and filter it out with my own digital filter post sampling of the ECG?
I was thinking if the AC drive clock and the sampling clock are in sync, It would be possible to filter the AC by sampling at a multiple of 267 Hz.
Do you have any recommendations for what type and what settings to try for detecting lead off.
What have you found works best for gel type electrodes on the chest.