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A failure or incorrect control of pixels or individual sub-pixels can arise occasionally, because of this very high number of transistors and the extremely complex manufacturing process associated with it. There have been continuous approaches to define the number of permitted pixel errors in the past. However, these attempts have for the most part been very complicated and completely different from manufacturer to manufacturer. MEDION follows the strict and transparent requirement of the ISO 13406-2, Class II Norm, which are summarised in brief in the following, in the handling of guarantees for all TFT display products for this reason. Among other matters, the 13406-2 ISO Standard defines generally applicable guidelines in relation to pixel errors. The pixel errors are categorised into four error classes and three types of error. Each individual pixel is composed in its turn of three sub-pixels each with a basic colour (red, green, blue). Cleaning Types of pixel error: . Type 1: Pixels shining for a long time (bright, white point), although not activated. A white pixel arises because of the illumination of all three sub-pixels. . Type 2: Pixels not shining (dark, black point), although activated . Type 3: Abnormal or defective sub-pixels coloured red, green or blue (e.g. shining for a long time with half brightness, not lighting one colour, flashing or flickering, but not Type 1 or 2) Addition: Cluster of Type 3 (= failure of two or more sub-pixels in a block of 5 x 5 pixels. A cluster is a field of 5 x 5 pixels (15 x 5 sub-pixels). Classes of pixel error: Error Class Type 1 Type 2 Type 3 Cluster of Type 3 DE EN FR ES DK NL I 000-0 II 2 2 5 -2 III 5 15 50 5 IV 50 150 500 50 The permitted number of errors of the types specified above in each class of error relates to a million pixels and must be converted in accordance with the physical resolution of the display. A maximum permitted number in Error Class II follows from this: For a resolution of M. pixel Sub-pixels (Type, see above) 1024 x 768 (15") 0.786432 2.359296 2 2 4 -2 1280 x 1024 (17,18, 19") 1.310720 3.932160 3 3 7 -3 1600 x 1200 (19“) 1.920000 5.760000 4 4 10 -4 1440 x 900 (19“ wide) 1.296000 3.888000 3 3 7 -3 1600 x 900 (20“ wide) 1.440000 4.320000 3 3 7 -3 1680 x 1050 (20“ wide, 22“ wide) 1.764000 5.292000 4 4 10 -4 1920 x 1080 (23" wide) 2.073600 6.220800 4 4 10 -4 1920 x 1200 (25" wide) 2.304000 6.912000 4 4 10 -4 Error Class I is only used in the case of special applications, e.g. in the medical sector, and is associated with corresponding supplementary costs. Error Class II has become established as the standard for manufacturers conscious of quality and with very good display units. Example: A 20” display unit consists of 1600 horizontal and 900 vertical scanning elements (pixels), that is 1,440,000 pixels in total. This gives a factor of about 1.4 in relation to one million pixels. Error Class II therefore allows 3 errors of both Type 1 and Type 2, 7 Type 3 errors and 3 Type 3 clusters. Reproduction of this Handbook This document contains legally protected information. All rights reserved. Reproduction in a mechanical, electronic or any other form is forbidden without the written permission of the manufacturer. 19 English Technical data . Model MD 20138 . Monitor size 20” (approx. 51 cm), TFT . Size ratio 16:9 . Nominal voltage AC 100-240 V ~ 50/60 Hz Nominal electricity 1.8 A . Resolution 1600 x 900 . Brightness 250 cd/m. (typical) . Contrast 1,000:1 (typical) . Dynamic contrast 30,000:1 . Reaction time 5 ms (typical) . Viewing angle h/v 160°/160° (typical) CR>10 . RGB input, analog 15-terminal D-SUB connection . Audio Input 1 Vrms max. 100Hz~8KHz 3.5 mm stereo jack . Audio Output 2 x 1.5 W max. . User control Power ON/OFF, OSD . Temperatures In operation 0 C ~ +40°C Not in operation -20° C ~ +60°C . Moisture In operation < 80% (Non-condensing) Not in operation < 90% . Weight (net/gross) 4.1 kg / 5.4 kg . Dimensions (WxHxD) approx. 482 x 372 x 213 mm . Power consumption (Stand-by) Less than 1 Watt . Power consumption (operation) Less than 30 Watt Copyright © 2009 All rights reserved. This Handbook is protected by copyright. The copyright is the property of the Medion® Company. Trademark: MS-DOS® and Windows® are registered trademarks of the Microsoft® Company. Pentium® is a registered trademark of the Intel® Company. Other trademarks are the property of their respective owner. Technical and visual changes and printing errors are reserved. Technical data Warranty Terms for United Kingdom Restricted Warranty I. General Conditions of Warranty 1. General This warranty covers defects relating to workmanship and manufacture in MEDION products. The period during which this warranty is valid and during which claims against the warranty can be made to MEDION must be in accordance with the following terms in order to be considered eligible: . Is effective from the date of purchase or receipt of the MEDION product from an authorised seller of MEDIO...