LVDS signal integrity for video transmission lines

Transmission of high-speed digital video, at large distances, between camera and signal processing unit is a high concerned topic, especially in military applications, where high integrity is required. In our system a number of transmission methods where examined, for a 7 meters video path that includes a number of discontinuities. Finally LVDS channel link method was selected. This paper will present the analysis and simulations performed in order to gain confidence on the design. The simulations performed led to appropriate design and selection of the transmission media (printed flat cables, printed circuits, cables), the interconnections (connectors) and even of the design (repeaters added). The simulation used IBIS model of the drivers and receivers. For the connectors, the printed flat cable and the wiring cable a model was generated based on the physical layout of the elements. This paper will present the whole transmission path, the analysis and simulations performed and the interactive process that led to a closed system configuration and devices selection.