Color Selection and Verification Testing for Airborne Color CRT (Cathode Ray Tube) Displays,
BOEING COMMERCIAL AIRPLANE CO SEATTLE WA
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Recent advances in Cathode Ray Tube CRT technology have made the use of multi-color displays feasible for a variety of applications. One particularly persistent problem in color display technology is the specification and visual verification of a color repertoire. The utility of a color display is dependent upon the display providing suitable chromatic differentiation and image brightness to ensure reliable symbol visibility and color discrimination under all operational conditions. These criteria require special consideration when the display must be used in dynamic and severe lighting environments, such as the flight deck of an aircraft. This paper details color selection and visual testing methods used for the shadow-mask color CRT displays on the Boeing Model 757767 flight decks. Topics include analytical methods for initial color selection, visibility and other discrimination testing under extreme high and low ambient lighting conditions, color saturation effects, and special display design considerations and limitations.