Acer TravelMate 4750 - Manual (Page 76)

56
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

)] lx where

= 85°
• Color: Source D65
Reflection class of LCD panel
(positive and negative polarity)
•
Ordinary LCD: Class I
• Protective 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