Visual Characteristics; 220B2 22" Wide 16:10 Lcd Monitor; Test Conditions; Brightness - Philips 220BL2CB/00 Service Manual

4

Visual characteristics

4.1

Test conditions

Unless otherwise specified, this specification is defined
under the following conditions.
(1) Input signal : As defined in 3.3, 1680 x 1050 non-interlaced mode (1680 x 1050@75Hz), signal
(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
4.2

Brightness

Follow Panel specification.
4.3

Image size

Actual display size
4.4

Brightness uniformity

Set contrast at 100% and turn the brightness to get average above 250 nits at centre of the
screen.
Apply the Fig 1, it should comply with the following formula:
Where B_max = Maximum brightness
4.5

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 :
2010/02/10
General Product Specification
sources must have 75 ohm output impedance.
473.76 mm x 296.10 mm
( B_max - B_min )
B_max
B_min = Minimum brightness
ABS ( YA - YB )
220B2
PHILIPS
X 100% > 75%
X 100% < 1.5 %
YA
22" Wide 16:10 LCD Monitor
220BL2 LCD
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