Philips 220E1SB/00, Руководство по обслуживанию, Страница: 89 / 97

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Meridian 1
4. Visual characteristics
Test conditions
Unless otherwise specified, this specification is defined under the following conditions.
(1) Input signal: As defined in 3.3, 1920*1080
non-interlaced mode (1920*1080@60Hz 148.50 MHz), signal sources must
have 75 ohm output impedance
(2) Luminance setting: controls to be set to 300 nits with full screen 100 % duty cycle white signal
(3) Warm up: More than 30 minutes after power on with signal supplied.
(4) Ambient light: 400 -- 600 lux
(5) Ambient temperature: 20 ± 5
°
C
Brightness
To follow Panel specification
Image size
Actual display size: Refer to 2.1 LCD PANEL spec.
Brightness uniformity
Set contrast at 100% and turn the brightness to get average above 300 nits at centre of the screen. Apply the Fig 1;
it should comply with the following formula:
B_min
X 100% > 75% (Follow panel spec)
B_max
Where B_max =Maximum brightness
B_min = Minimum brightness
Check Cross talk(s)
Apply Pattern 2. Set contrast and brightness at 100 %. Measure YA. Then output Pattern 3 and measure YB. The
cross talk value:
ABS (YA - YB)
⎯⎯⎯⎯⎯⎯⎯⎯⎯
X 100% < 1.5 %
YA
White Color adjustment
There are three factory preset white color 9300K, 6500 and sRGB align by FGA function.
Apply full gray 64 pattern, with brightness in 100 % position and the contrast control at 50 % position.
The 1931 CIE Chromaticity (color triangle) diagram (x, y) coordinate for the screen center should be:
Product specification
CIE coordinates (x,y)
9300K
x = 0.283 ± 0.02
y = 0.297 ± 0.02
6500K/sRGB
x = 0.313 ± 0.02
y = 0.329 ± 0.02
sRGB
x = 0.313 ± 0.02
y = 0.329 ± 0.02