Foreword
2.2 General information
Sources of light
Notice
Position the screen so that it is not subject to direct sunlight or other strong sources of light.
Defective pixels in the display
At present, the manufacturing process of modern displays does not guarantee that all pixels of the display will be perfect. A small number of defective pixels in the display is therefore unavoidable. This does not present a functional problem as long as the defective pixels are not bunched in one location.
Further information is available in the section "General technical data" of the "Technical data" chapter.
Burn-in dffect on TFT displays
A permanent picture with bright images can lead to a
•The liquid crystals in screen savers which actuate active black when the backlighting is on, e.g. flying stars "starfield simulation," renew themselves. Pay attention to the length of time the backlighting is activated
•The following applies to screen savers which turn off the the backlighting: Each time the backlighting is turned on, its life is reduced by 50 minutes.
Consider the following carefully:
•Screen saver
•Switch off the backlighting regularly
•Permanent display of the customer application
SIMATIC Panel PC 877 | |
Operating instructions, Release 07/2006, |
