A high resolution 12 channel EKG system

This paper presents a high-resolution 12-channel EKG system. Data are sampled every 1 ms on each channel with 12 bit resolution. Inputs are fully protected at 4kV differential voltage and galvanic separated from mains with 4kV dielectric rigidity. A digital filtering removes 50Hz line frequency. The system is implemented as an improvement of the CARDIOLINE DELTA 60 Plus portable 6 channel EKG.