Quality Assurance Constancy Test of the Monitor
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04/2012
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F.6-7
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✧ With the luminance meter, measure the minimum contrast
(L
min.
) and the maximum contrast (L
max.
).
The ratio L
max.
/L
min.
is calculated as maximum contrast MK
(≥ 40:1).
F. 6
i
.6
F
You can simply increase the contrast ratio by reducing the envi-
ronmental lighting intensity. However, make sure that enough
light is available for reading and writing.
F. 6
Testing the spatial and con-
trast resolution
F.6
The visual resolution is checked in this test.
F. 6
✧ Select test image 2 or test image 3.
✧ Check the lines of the grid with a modulation of 100% high
contrast (HC) at the center and in the four corners.
The lines of the grid must be recognizable.
F. 6
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