Acer Aspire 4220 Series, User Manual

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93
Eng
lis
h
LCD panel ergonomic specifications
Design viewing distance 500 mm
Design inclination angle 0.0°
Design azimuth angle 90.0°
Viewing direction range class Class IV
Screen tilt angle 85.0°
Design screen illuminance
•
Illuminance level:
[250 + (250cos
α
)] lx where
α
= 85°
•
Color: Source D65
Reflection class of LCD panel
(positive and negative polarity)
•
Ordinary LCD: Class I
•
Protective or Acer CrystalBrite
™
LCD:
Class III
Image polarity Both
Reference white:
Pre-setting of luminance and
color temperature @ 6500K
(tested under BM7)
•
Yn
•
u'n
•
v'n
Pixel fault class Class II
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