TAMUZ KVM 1730W Operation Manual - page 6
Introduction
OSPREY G3 Series
ISO Product Quality
For the production of TAMUZvideo monitors LCD panels complies with the standard ISO 13406-2, er-
ror-class 1 or 2, only. This ISO standard 13406-2 defines the scales for ergonomic and picture quality.
The LCD panel manufactures itself (like AU, CMO, LG-Philips, NEC, Samsung, Sharp or Toshiba) don't
guarantees absolute any errorlessness and don't guarantees that the LCD panels are free of sticking ef-
fects.
Pixel Errors
Following limited values which may not exceed are valid.
ISO 13406-2
Typ 1
Typ 2
Typ 3
max. Distance
connected Defects
Class I
0
0
0
Class II
2
2
5
1 defect pixel within a circle of 5
mm
maximum 2 defective sub-pixel
beside each other
Class III
5
15
50
2 defect pixels within a circle of 5
mm
maximum 2 defective sub-pixel
beside each other
Class IV
50
150
500
Error-type #1 describes errors by a complete bright (white) pixel, error-type #2 describes errors by a
complete dark (black) pixel, error-type #3 describes errors by defective sub-pixels of the colors red,
green and blue, which are completely bright or dark.
A single LCD pixel is built by a set of three sub-pixels, one of red, green and blue.
Error class I contains highly selected panels with no pixel error anyway. Panels within this class are rare
and very high priced. Panels from the error class II are the most common selection for high quality indus-
try applications. The error class III defines the mass production selection for IT applications. TFT panels
related to the error class IV are not useful for a LCD monitor at all.
Class of Usability
Next the standard ISO 13406-2 defines the classification of usability of LCD screens.
Usability Classification
Description
Class 1
This permits several users to view the entire display area at the same time. This ap-
plies for intended viewing distance (between 40 to 60 cm, depending on the size
and resolution of the monitor) and for a viewing angle within an 80° cone in front
of the screen without any restriction of visual efficiency, in such a way that bright-
ness, contrast and color is maintained
Class 2
Permits a single user to view the entire area of the display. This applies for inten-
ded viewing distance (between 40 to 60 cm, depending on the size and resolution
of the monitor) from every position in front of the screen, in such a way that bright-
ness, contrast and color is maintained.
Class 3
Permits a single user to view the entire area of the display. This applies for inten-
ded viewing distance (between 40 to 60 cm, depending on the size and resolution
of the monitor) from one fixed position in front of the screen, in such a way that
brightness, contrast and color is maintained.
Class 4
Permits a single user to view the center area of the display. This applies for inten-
ded viewing distance (between 40 to 60 cm, depending on the size and resolution
of the monitor) from one fixed position in front of the screen, in such a way that
brightness, contrast and color is maintained.
All of the TAMUZ OSPREY series monitors comply with class 1.
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