11.3.1.4.1-1 Display Screen Resolution

The display device screen should have sufficient resolution so users can distinguish all display elements,

 

characters, images, and codes from the maximum viewing distance and angle.

Additional Information: One measure of display resolution is the number of pixels along the width and height of the visual display screen (e.g., 1024x600). For a given viewing distance, the more pixels along each dimension, the better the display screen resolution. For image and video displays, the screen resolution should be a minimum of 32 pixels per degree of visual angle. The modulation transfer function area (MTFA) is a more accurate measure of display screen resolution; it should be a minimum of 5. This value may be directly developed from microphotometric measurements; or, for monochrome visual displays, it may be estimated using a formula, which may be found in the cited reference. See IDMS (2012) for measurement information.5908, 3001