Nowadays Computer mathematics system (CMS) is intensively penetrating into the measuring technology. Matrix CMS MATLAB has become the world standard of the software for the solution, programming and mathematical modeling of serious scientific and technical tasks. The following companies, Tektronix, Agilent Technologies etc., are planning to include options CMS MATLAB into the rest of their devices options. The attachment technique of modern digital oscilloscopes with CMS MATLAB system is described in the present article as well as the mathematical and spectrum analyses which are described with this option help introduced by a number of methods.