Average Brightness Measure Specification; Contrast Ratio Measure Specification - LG 47LW6500 Service Manual

LGE

Average Brightness measure specification

1)
Impress 100%(255Gray Level) full white pattern at the same peak brightness measurement.
2)
Measure average brightness in 5 points.

Contrast ratio measure specification

1) Test display signal : 100%(255Gray)Full White Window signal & all Black Raster signal(0Gray)
2) Dark room measure condition : : Using touch type Color analyzer CA-210 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 100%(255Gray)Full 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 central
Calculate the following numerical formula
Contrast ratio = Lw / Lb
Display Division
LC12C Product Specification
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