Acer Extensa 5220 - Manuel (Page 99)

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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