eMachines E181H Service Guide - Page 8

Electrical Requirements

Get eMachines E181H PDF manuals and user guides View all eMachines E181H manuals
Add to My Manuals
Save this manual to your list of manuals

Page 8 highlights

Electrical Requirements Standard Test Conditions All tests shall be performed under the following conditions, unless otherwise specified. Ambient light Viewing distance Warm up time All specifications Fully functional Measuring equipment Control settings User brightness control User contrast control User red/white balance, Green/white balance and Blue/white balance control Power input Ambient temperature Analog input mode : Dark room (

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
8
Electrical Requirements
Standard Test Conditions
All tests shall be performed under the following conditions, unless otherwise specified.
Ambient light
:
Dark room (<1 cd/m2)
Viewing distance
:
40 cm for LCD performance, 20 cm for LCD failures
Warm up time
All specifications
:
＞
30 minutes
Fully functional
:
5 seconds
Measuring equipment
:
Chroma 7120 signal generator or equivalent, directly
Connected to the monitor under test.
Minolta CA100 photometer, or equivalent
Control settings
User brightness control
:
Set to Factory preset value (cut off raster)
User contrast control
:
Set to factory preset value, which allows that the brightest two of
32 linear distributed gray-scales (0
～
700mv) can be
distinguished.
User red/white balance,
Green/white balance and
Blue/white balance control
:
In the center (unless otherwise specified)
Power input
:
230V± 5
％
Ambient temperature
:
20+
5
℃
Analog input mode
:
1280x1024, 60 Hz, all white
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