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SCADA, Supervisory Control And Data Acquisition, is a concept used in computer software to control and monitor industrial processes remotely. Visually SCADA displays images with hundreds of colored lines connecting different modules or components, usually on a black background. The Energy Sector, specifically CFE and PEMEX in our country, make use of SCADA software to supervise and monitor their installations.

High resolutions are required to monitor all the information SCADA displays. Colored lines that splice and cross to connect different components remain static for long periods of time, which could cause images to "burn" or "mark" on the screens. This phenomenon is known as burn in, image sticking, or temporary image retention (TIR), and occurs most commonly on plasma screens, where it is appropriate to say that phosphorus burns. In LCD screens (even if they have LED backlighting), the phenomenon of image retention occurs, an effect that is counteracted by turning off the screens a few hours a day. The most appropriate way to eliminate this retention effect on an LCD screen is to use screens with external electronics, i.e. to remove the power supplies and digital video inputs from the screen chassis, mounting them in a rack located in a site with controlled conditions.

Throughout its history, Grupo Covix has installed dozens of SCADA Monitoring Centers. It did so in the '90s with rear-projection technology, and pioneered plasma, LCD, LED video hubs and DirectView LED technology, which represents the latest technology for this application and which completely avoids any image retention.