ASTM-E1682 Standard Guide for Modeling the Colorimetric Properties of a CRT-Type Visual Display Unit

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Standard Guide for Modeling the Colorimetric Properties of a CRT-Type Visual Display Unit



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1.1 This guide is intended for use in establishing the operating characteristics of a visual display unit (VDU), such as a cathode ray tube (CRT). Those characteristics define the relationship between the digital information supplied by a computer, which defines an image, and the resulting spectral radiant exitance and CIE tristimulus values. The mathematical description of this relationship can be used to provide a nearby device-independent model for the accurate display of color and colored images on the VDU. The CIE tristimulus values referred to here are those calculated from the CIE 1931 2° standard colorimetric (photopic) observer.

1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


cathode ray tubes (CRTs); colorimetry; computer graphics; displays; video monitors; visual display units

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Document Number


Revision Level

2008 R22 EDITION



Modification Type


Publication Date

Nov. 4, 2022

Document Type


Page Count

6 pages

Committee Number