Visual Characteristics; Test Conditions; Brightness; Image Size - Philips 230B8QJEB/00 Service Manual

3.18.8
The monitor audio amplifier shall have minimum 10K Ohm AC input
impedance
P.S This charging spec for test reference. Mobile phone and pad device charging current method
need in accordance with brand charge software setting.
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, follow panel resolution, signal sources must have 75 ohm
(2) Luminance setting : controls to be set to brightness 100% with full screen 100 % duty cycle
(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 100% 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 :
4.6

Color temperature adjustment

There are six factory preset white color 11500K,9300K,8200K,7500K 6500K,5000K
Apply full white pattern, with brightness in 100 % position and the contrast control at 50 % position.
Monitor Audio Amplifier Input Impedance
output impedance.
white signal
: Follow panel spec.
( B_max - B_min )
B_max
B_min = Minimum brightness
ABS ( YA - YB )
 X 100%
X 100% > 75%
YA
Meridian 7
CC170CW
8 LCD
C
C
< 1.5 %
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