A diagnostic system includes a remote unit configured to gather information and a base unit configured to process the gathered information. A cable couples the remote unit to the base unit and is configured to carry the information. The cable includes one or more electrical conductors for communicating electrical signals between the base unit and the remote unit. The cable also includes one or more optical fibers over which the gathered information is communicated. An outside sleeve is formed around the one or more electrical conductors and the one or more optical fibers.