The formation of compound discrete samples for data acquisition with desirable amplitudes in given spectral areas

The problem of sampling in data acquisition systems is considered in this paper. It is shown, that spectrum formation with desirable amplitudes in given spectral areas is possible if signal samples are presented as compound samples of special form. The technique of compound sample formation is offered. The approach makes it possible to exclude modulator and demodulator from data acquisition system with galvanic isolation. The technique can be used in medical devices like electrocardiographs.