A method and arrangement are disclosed for operating a converter circuit. A processor includes multiple cores, and each core operates at a different local clock frequency. The carriers of gearsets couple shaft which is connectable, via clutch, to drive input shaft. An inspection system is also provided. In operation, an expander tool such as a hydraulic setting tool acts upon the liner hanger, causing the slips to be expanded into frictional engagement with the surrounding string of casing. A communication interface establishes communication between the controller and at least one of the plurality of types of an inputoutput expansion module.