Luminance Uniformity Measure Condition; Contrast Ratio Measure Specification - LG 32LN540B-CN Service Manual

LGE
Establish : 12/08/31
Reform: 12/08/31

Luminance uniformity measure Condition

1) Impress 100 % (255Gray Level) full white pattern at the same peak brightness measurement.
2) Measure brightness L0~L8 in each 9 points P0~P8
- Luminance uniformity(%) = Minimum(L1, L2, L3,
- Average Luminance = Sum of Luminance(L1, L2, L3,

Contrast ratio measure specification

1) Test display signal : 30*30 dots White Window signal & all Black Raster signal
2) Dark room measure condition : : Using touch type Color analyzer CA-100 Dark room in the non outside light
3) Bright room measure condition : In bright room of 150Lx illumination in the panel surface, locate a source of light on the above 45 of the panel surface.
4) Measure method
In standard test condition, impress 30*30 dots White Window Pattern signal. Measure center peak brightness degree Lw of white window
Impress black Raster signal as contrast ratio measurement signal. Measure black brightness degree Lb of PDP central. Calculate the following numerical formula.
Contrast ratio = Lw / Lb
5) Video menu option condition
Display Division
NetCast 4.0 Low LC36B Product Specification
, L8) / Maximum(L1, L2, L3, , L8) * 100
, L8) / 9
LG(51)
24
47
LG