Planar Systems LUX80 Guide d'installation télécharger pdf (Page 15)

Recommended Usage

Planar UltraLux Series Installation Guide 9

Recommended Usage

The Lux series uses commercial grade LCD panels, and is designed for 24/7 operation.

With certain static images and extreme conditions, a slight amount of temporary

image retention may occur. To minimize this possibility, it is recommended that

either static images be changed occasionally (for example to a different screen

layout, or a black screen), or that a periodic display shutdown be programmed using

RS232 commands or the UltraLux Remote Monitoring software. In order to get the

most out of your LCD modules, use the following recommended guidelines to

optimize the display.

Burn-In Versus Temporary Image Retention

Burn-in causes the screen to retain an image essentially forever, with little or no way

to correct the problem. Under normal use, an LCD module will not experience burn-

in, as plasma displays do, nor will it retain images in any way.

Normal use of an LCD module is defined as displaying continuously changing video

patterns or images. However, LCD modules can experience temporary image

retention when recommended usage guidelines are not followed.

What is Temporary Image Retention?

Temporary image retention (TIR) can occur when a static image is displayed

continuously for extended periods of time. An electrical charge differential may build

up between the electrodes of the liquid crystal, which causes a negative-color video

image (color-inverted and brightness-inverted version of the previous image) to be

retained when a new image is displayed. This behavior is true for any LCD device

from any LCD manufacturer.

TIR is not covered under warranty. See standard warranty terms and conditions for

details. Here are some guidelines to help you avoid TIR:

• Use the LCD module to show a screen saver, moving images or still pictures that

change regularly. When using high-contrast images, reposition the images

frequently.

• Turn off the UltraLux Series when it is not in use. There are a couple of ways to

do this automatically. See "Powering On/Off Displays" on page 12 more

information. To use serial commands, see "RS232 Communication" on page 30.

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Planar Systems LUX80 Guide d'installation Page 15