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syngo CT 2007E Emotion Operator Manual
02/2008
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Constancy Test of the Monitor Quality Assurance
F.7-6
The individual tests
F.7
Performing the luminance
measurements
F.7
In this test the veiling luminance (environmental lighting) and
the maximum contrast are tested.
F.7
✧ Switch the monitor off and wait at least 30 seconds.
✧ Adjust then the room lighting to the operating conditions
using the dimmer switch.
✧ Measure veiling luminance Ls at the center of the screen
with the luminance meter.
i
.7
F
When taking measurements with the luminance meter, observe
the distance recommended by the manufacturer (40 - 60 cm).
F.7
✧ Switch on the monitor.
✧ Select test image 1 to measure the minimum and maxi-
mum luminance.
i
.7
F
In test image 1, the squares for the maximum greyscale value
(L
max.
, bright field) and the minimum grayscale value (L
min.
,
black field) are used.
F.7
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