Thus the dominant noise in these measurements is not quantisation noise
. Rather it is the noise contributed by other sources like external pick up, disturbance in the subject medium and intrinsic noise in the analogue electronics.This other noise is well above the level of the quantisation noise
determined by Paccmln = 38 bits.Continuing with the tank tests, various objects such asmetallic or insulating rods, or sponges prepared in solutions of various conductivities, were placed in the baseline solution to introduce inhomogeneity during EIT data capture.
However, it might occur depending on the randomly generated noise added to the data sequence, especially when approaching a low number of fractional bits as the quantisation noise increases.
The quantisation noise is minimised if the available fractional bits of the implemented registers are used in its whole width.