Technical data

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The permitted number of errors of the types specified above in each class of error relates to a million
pixels and must be converted in accordance with the physical resolution of the display.
A maximum permitted number in Error Class II follows from this:
For a resolution of M. pixel Sub-pixels (Type, see above)
1024 x 768 (15") 0.786432 2.359296 2 2 4 - 2
1280 x 1024 (17,18, 19") 1.310720 3.932160 3 3 7 - 3
1600 x 1200 (19") 1.920000 5.760000 4 4 10 - 4
1440 x 900 (19" wide) 1.296000 3.888000 3 3 7 - 3
1600 x 900 (20" wide) 1.440000 4.320000 3 3 7 - 3
1680 x 1050 (20" wide, 22" wide) 1.764000 5.292000 4 4 10 - 4
1920 x 1080 (23" wide) 2.073600 6.220800 4 4 10 - 4
1920 x 1200 (25" wide) 2.304000 6.912000 4 4 10 - 4
Error Class I is only used in the case of special applications, e.g. in the medical sector, and is
associated with corresponding supplementary costs. Error Class II has become established as the
standard for manufacturers conscious of quality and with very good display units.
Example:
A 23" display unit consists of 1920 horizontal and 1080 vertical scanning elements (pixels), that is
2,073,600 pixels in total. This gives a factor of about 2.07 in relation to one million pixels.
Error Class II therefore allows 4 errors of both Type 1 and Type 2, 10 Type 3 errors and 4 Type 3
clusters.
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