Targa Visionary LT 2210 Appendix
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Appendix
Pixel Error Classes
Pixels are single dots making up the picture that appears on the screen. One
pixel always consists of three sub-pixels for displaying the basic colours (red,
green and blue).
The Pixel Error Classes are rated from Level I (very good) to Level IV (bad
quality). Your LT 2210 belongs to Error Class II and therefore offers a high-quality
display. Within the Error Classes a limited number of pixel may present errors.
There are three types of errors:
Type 1: Continuous lighting pixel (a bright, white dot), even when it should not
light.
Type 2: Non-lighting pixel (a dark or black dot) even when it should light.
Type 3: Abnormal or defective sub-pixels of the basic colours (e.g. steady
lighting with half intensity, non-lighting of a specific colour, blinking or
flickering, but not included in Type 1 or Type 2).
Furthermore, a so-called cluster (a matrix of 5x5 pixel) may contain a limited
number of erroneous pixel only.
For Error Class II, for each 1 million pixel only 2 pixel may contain errors of Type
1, Type 2 and Cluster; it may present up to 5 erroneous pixels of Type 3 (see the
following table).
Error Class Type 1 Type 2 Type 3 Cluster
I
0 0 0 0
II
2 2 5 2
III
5 15 50 5
IV
50 150 500 50
Considering the resolution of your LT 2210 (1680 x 1050) it contains 1,764,000
pixel. From this value we can deduce the maximum amount of erroneous pixel
(see the following table).
Error Class Type 1 Type 2 Type 3 Cluster
LT 2210
4 4 9 4
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