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The paper is devoted to expedients of AOTF spectral colorimeters calibration. The spectrometer method of color values measuring with reference to spectral colorimeters on AOTF surveyed. The theoretical exposition of spectrometer data processing expedients is offered. The justified source of radiation choice, suitable for calibration of spectral colorimeters is carried out. The experimental results for different acousto-optical mediums and modes of interaction are submitted. 1.INTRODUCTIONAt an alignment and tuning of a spectral colorimeter on the basis of an acousto-optical tunable filter (AOTF) there is a necessity for precise installation of correspondence between electrical control signal frequency which defining acoustic frequency and optical radiation wavelength in a working range maximum ofthe AOTF [1].The calibration of a spectral colorimeter can be realized with the help of monochromatic radiation sources, which wavelength is known to 0. 1 nm accuracy. As such sources of coherent radiation for a violet area, for example, He-Cd laser with a wavelength 2 = 440 nm can be used, that there corresponds peak responses ofthe dark blue channel ofhuman vision and He-Ne laser with a wavelength ? =633 nm exceeding a wavelength ? = 555 nm, on which is the maximum of human vision response in red area. These sources allow binding in points, close to boundary points of a visual waveband. For checkout ofthe correspondence frequencies linearity and AOTF's wavelength the presence intermediate point is necessary, on which the check of scale linearity can be yielded. Optical radiation ofgreen YAG-Nd laser this point can be (wavelength 2=532nm).Thus, on the indicated three points the calibration of optical radiation wavelengths scale linearity in a maximum of a gear transmission AOTF can be yielded and the requirements to a linearity of a frequency change of electrical oscillations driving an AOTF set. 2.COLOR VALUES MEASURING METHODSThe problem of color measuring is more complicated, than it can seems on the first time. The perception of color distinctions frequently carries subjective character that generates existence of many alternate colorimetric systems. Data in