Acer AL1731, Service Manual, Page: 5 / 78

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2. ELECTRICAL REQUIREMENTS
2.1 Standard Test Conditions
All tests shall be performed under the following conditions, unless otherwise specified.
Ambient light: 225 lux
Viewing distance : 50 cm in front of LCD panel
Warrn up time
All specifications:
30 minutes
Fully functional: 5 seconds
Measuring Equipment: Chroma 2250 signal generator or equivalent, directly
Connected to the monitor under test.
Minolta CA100 photometer, or equivalent
Control settings
User brightness control:
Maximum (unless otherwise specified )
User contrast control: Typical (unless otherwise specified )
User red/white balance,
Green/white balance and
Blue/white balance control:
In the center (unless otherwise specified )
Power input : 110Vac or 230Vac
Ambient temperature : 20
±
5 ˚ C ( 68
±
9 ˚ F)
Analog input mode : 1280 x1024 /60 Hz
2.1.1 MEASUREMENT SYSTEMS
The units of measure stated in this document are listed below:
1 gamma = 1 nano tesla
1 tesla = 10,000 gauss
cm = in x 2.54
lb = kg x 2.2
degrees F = [°C x 1.8] + 32
degrees C = [°F - 32]/1.8
u' = 4x/(-2x + 12y + 3)
v' = 9y/(-2x + 12y + 3)
x = (27u'/4)/[(9u'/2) - 12v' + 9]
y = (3v')/[(9u'/2) - 12v' + 9]
nits = cd/(m2) = Ft-L x 3.426
lux = foot-candle x 10.76
2.2 LCD monitor General specification
Panel Type : 17 “ active matrix color TFT LCD
1). Hydis HT17E12-200
Display size : 337.92mm(H) x 270.34mm(V)
Display mode : VGA 720 X 400 (70 Hz)
VGA 640 X 480 (60/70/75 Hz)
SVGA 800 X 600 (60/70/75 Hz)
XGA 1024 X 768 (60/70/75 Hz)
SXGA 1280 X 1024 (60/70/75 Hz) standard resolution