UDC 621.376
SIGNAL GENERATION ON THE LINE OUTPUT OF VIDEO INTERFACES
M. I. Bulgakova, employee, the Academy of Federal Security Guard Service of the Russian Federation, Orel, Russia;
orcid.org/0000-0003-0978-1969, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
D. A. Gulyaikin, Ph.D. (Tech.), employee, The Academy of Federal Security Guard Service of the Russian Federation, Orel, Russia;
orcid.org/0000-0002-7743-2237, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
A. A. Brechko, employee, the Academy of Federal Security Guard Service of the Russian Federation, Orel, Russia;
orcid.org/0000-0002-0233-7868, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
The article deals with the problem of modeling signals of a given shape using digital-to-analog converter of a personal computer video card. The relevance of the research is the need to support the learning process of theory of electrical communication discipline. The aim of this work is to develop a model of the image displayed on monitor screen for generating signals of a given shape at linear output of video interfaces. The article presents the developed analytical model of the image corresponding to the signals of various forms, including the ones received when performing various types of modulations. Theoretical positions are confirmed by experimental research, in which oscillograms of generated signals are obtained using the developed software at the linear output of VGA video interface. The presented materials can be used in the educational process in the practical study of signals and modulations.
Key words: video interface, signal modeling, modulation, manipulation, waveform, harmonic signal, VGA, DVI, RGB.