HUNTER

electronic apparatus comprising a headend CPD radar unit, a return path switch, a computer for controlling the operation of the headend CPD radar unit and return path switch and for calculating inputs for and processing outputs from the headend CPD radar unit and return path switch, and a portable field radar-calibrator unit that communicates with the headend CPD radar unit, the apparatus being used for identifying and locating sources of common path distortion (CPD) in a bi-directional cable television network; and computer software for the operation of apparatus that identify and locate sources of CPD in bi-directional cable networks [ and manuals supplied therewith ]