Acer manual Electrical Requirements of H235H, Standard Test Conditions, Measurement systems

Electrical Requirements of H235H

Standard Test Conditions

All tests shall be performed under the following conditions, unless otherwise specified.

Warm up time	＞ 30 min.
AC supply voltage	230V± 5％, 50± 3 Hz
Ambient temperature	20°C ± 5°C
Humidity	65% ± 20%
Display mode	1920 x 1080, 60 Hz, Pixel Clock：148.5MHZ,all white
e-color mode	Set to “User” mode
Contrast control	Set to The value under user mode, which allows that the brightest
	two of 32 linear distributed gray-scales (0 ～ 700mv) can be
	distinguished.
Color temperature	6500°K
Brightness control	The value under user mode
Analog Input signal	700 mVss
Picture position and size	Factory preset value,
Viewing angle	90 ° H and V
Viewing distance	40 cm for LCD performance, 20 cm for LCD failures
Ambient illumination	Dark room < 1 cd/m2

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

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