The invention relates to a process for preparing functionalized oligomeric silsesquioxanes by reacting incompletely condensed oligomeric silsesquioxanes with alkoxysilanes and also to their use for further derivatizations, for the synthesis of catalysts and their starting compounds, and for the synthesis and modification of polymers. A hub is driven by the gearbox and is journalled on the housing. An updateable database is populated with application circuit information and a software routine is responsive to the measured electrical characteristic and configured to adjust the electrical characteristics measured by the codec based on the application circuit information in the database. The exit facet of the reflector is beveled with respect to the horizon and adjustable to provide a desired illumination zone and a desired illumination-covering area.