AT- series DVI fixed rack matrix switcher is switchgear specifically for DVI switching of high resolution digital signal transmission and design, can be arbitrary selection of multiple input signals are allocated to a plurality of display terminal. DVI matrix switch with up to 3.15 GHz, full digital, can support 480p, 720p, 1080i, 1080p and 1920x1200 resolution, the user can remote control panel button, RS232, switching signal to the central controller. Widely used in military industry, multimedia teaching, television and telephone conference, finance, scientific research, meteorology, hospital and other fields.