A quick treatment is: ADC = 3.0V fullscale. 3.0/4095 = volts per bit. Or you can also use a ratio: ADC (bits) / 4095 (bits) = ADCvolts (V) /3.0 (V)
Then you look at the ECG datasheet and above by gain to figure out volts on the electrode input. For more detail read section 9 of the manual which covers some sources of error. -Ben See section 9 of the user manual which describes how to get "volts" from the ADC bit value. On Mon, Apr 2, 2012 at 12:37 PM, Raffaele Gravina <[email protected]> wrote: > Dear all, > > this might be a silly question to some of you, but I wonder how I can > convert (from RAW ADC values to Volt) the two ECG signals I get from the > Shimmer2R equipped with the 4-leads ECG sensor-board. > > Any help would be greatly appreciated! > > Best, > > Raffaele > > _______________________________________________ > Shimmer-users mailing list > [email protected] > https://lists.eecs.harvard.edu/mailman/listinfo/shimmer-users > _______________________________________________ Shimmer-users mailing list [email protected] https://lists.eecs.harvard.edu/mailman/listinfo/shimmer-users
