CISPR 16-2-3 specifies the methods used to measure radiated disturbances. It tells a testing laboratory how a measurement must be made so that the result is comparable with the limits of the product standards and with results obtained elsewhere. The document defines the measurement distance, the height and the polarisation of the antenna, the way the equipment under test is arranged and operated, and the cable routing and loading that must be used. It explains the search procedure, in which the equipment is rotated and the antenna height is varied in order to find the maximum emission, and describes the conditions under which a preliminary scan may be replaced by the maximum measurement. Guidance is given on the treatment of the ambient signal from broadcast transmitters, which must be distinguished from the emission of the equipment, on the use of the measurement receiver settings and the detector types, on the measurement of emissions from cables and of the disturbance power, and on the errors that the measurement system can introduce.