Acer P5271 - Page 74

P5271/P5290/P5390W/P5271i
Condential
4-10
2. Brightness
Procedure - Full white pattern
- Use CL100 to measure brightness values of
P1~P9.
- Follow the brightness formula to calculate
brightness values.
☼ Brightness Formula
Avg. (P1~P9)*1.1m
2
Criteria ● 1300 ANSI lumen (for P5271/P5271i)
● 1750 ANSI lumen (for P5290/P5390W)
3. Full On/Full Off Contrast
Procedure - Full white pattern & full black pattern
- Use CL100 to measure brightness values of full
white pattern P5 & full black pattern B5
- Follow Contrast formula to calculate contrast values.
☼ Contrast Formula
P5/B5
Note: P5 = Lux of center in full white patternLux of center in full white patterncenter in full white patternin full white pattern white patternpattern
B5 =Lux of center in full black pattern
Criteria ● 2800: 1 (for P5271/P5271i/ P5290/P5390W)/P5271i/ P5290/P5390W))
4. Uniformity
Procedure - Full white pattern
- Use CL100 to measure brightness values of P1~P9
(see image: full white).
- Follow the Uniformity formula to calculate
average values.
☼ Uniformity Formula
JBMA Uniformity = Avg. (P1, P3, P7, P9)/P5X100%
Criteria ● 65%
Full black pattern
Full white pattern