Silicon Graphics Presenter, Руководство пользователя

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Quality
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driven all the time. Thus the pixels that are not changing in value look
perfectly stable.
A fourth difference, which actually works in the CRT’s favor, is the electrical
phenomenon of crosstalk between the pixels on a flat panel. In a flat panel,
whole columns of pixels are powered from the same electronic source. That
source bus is a very thin line that hides in the space between the pixels. The
result is that with some displayed images, the pixels above or below the
image do not receive enough electrons and thus appear lighter than they
should. In the worst case, you may see faint vertical streaks on the display.
You will probably see them only if you have a solid background and are
using the Presenter as a desktop monitor. The streaks are normal in LCD
technology. If they become so bright as to always detract from the display’s
performance, however, contact your service provider about a solution to the
problem.
Quality
The resolution of the Indy Presenter is 1024 x 768 pixels. Therefore your
display has 1024 x RGB x 768, or 2,259,296, subpixels — all in an area
equivalent to 2.5 times that of a 6-inch silicon wafer. Current technology is
not capable of producing a 100% defect-free active matrix display at
reasonable costs, although yields are improving steadily. Your Presenter
may exhibit a small number of isolated subpixel dropouts, which have been
individually screened to make certain they are in unobtrusive locations.
Backlight Brightness
The output of a fluorescent lamp strongly depends on the minimum bulb
wall temperature, because this temperature determines the mercury vapor
pressure inside the lamp. The colder the temperature, the more mercury
condenses on the inside of the bulb, resulting in decreased light output. At
25
°
C, the light output is at approximately 80% of its optimum temperature,
but at 10
°
C, the light output could easily degrade to 30% of its maximum.
Therefore it takes about one minute for the lamps to warm up to full
brightness from a cold start.