Applies to optical fibre amplifiers using active fibres, containing rare-earth dopants, presently commercially available. Establishes uniform requirements for accurate and reliable measurements, by means of the electrical spectrum analyzer test method, of the following OFA parameters: -small-signal gain; -reverse small-signal gain; -maximum small-signal gain; -maximum small-signal gain wavelength; -maximum small-signal gain variation with temperature; -small-signal gain wavelength band; -small-signal gain wavelength variation; -small-signal gain stability; -polarization-dependent gain variation.