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4.10.14 Luminance Uniformity
The variation in average display luminance between any area(with dimension approximate 2 cm of
diameter)on standard flat white screen, must be less than 35% of the luminance of the brightest area
with brightness control at cut-off and contrast control adjusted to 80 nits of luminance on the center of
screen.
4.10.15 Focus
When external contrast control is adjusted for 20 ? 1FL light output with a flat white field pattern, then
switch to a character pattern filled with "H" characters, the characters shall be readable and
distinguishable.
4.10.16Moire
While displaying a white raster, no Moire effect shall be visible at any luminance setting 15FL.
4.10.17 Purity
Conspicuous miss-landing shall not be visible within display area. at distance of 60cm from CRT surface
at 20FL white luminance.
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