A processor unit and a coprocessor unit are disclosed. The tile-like platform 12 is suspended over the tiled floor 16 by means of posts 18 situated within the grout lines 20. The diagnostic module estimates the cooling fluid temperature, determines the cooling performance based on the outlet temperature and the cooling fluid temperature, and selectively diagnoses a fault in the cooling system based on the cooling performance and a predetermined threshold. The method also includes computing a set of magnetic field vectors. The RF device obtains power from the target device through the input arrangement.