When I plugged it in the unit had the sound of powerering up,the rear fan started spinning but unable to test. Unit is being sold as is no returns. Function: Converts between different video standards like PAL, SECAM, and NTSC. Technology: Utilizes motion-adaptive interpolation and 4:2:2 component processing for high-quality conversion. Inputs/Outputs: Accepts and outputs various analog and digital video signals. Applications: Used in broadcasting and video production to ensure compatibility across different systems. Additional Features: Includes functions like scan conversion, scaling, and time base correction. Historical Context: Developed in the early 1990s, reflecting advancements in digital video processing.