Body surface potential mapping (BSPM) systems allow non-invasive investigation of the spatial-temporal behaviour of cardiac electrical activity. This study aims to present the validation (application) of 62-channel BSPM equipment. 12-lead ECG plus two leads on the back were recorded (21 healthy volunteers) and further segmented for 4 consecutive beats allowing to obtain P, QRS and T peaks and heart activity R-R, PR, QRS, ST and QT segments. The vectorcardiograms (VCG) are extracted from the electrodes placed on the torso (direct measurement -DM) or indirectly by the Inverse Dower, Uijen and Willems methods. 17 instants of time during one heart beat (P-QRS-T) (Figure 2) are used to generate sequential isopotential maps for each healthy volunteer to investigate propagation of highest and lowest potentials presented on each map. The results obtained in healthy volunteers are comparable with results in the literature, suggesting the system can help identifying heart rhythm disorders, in patients.