Planar M40L, Installation Manual

Page: 14 / 112

Recommended Usage
4 m40L/m46L Installation Guide
Recommended Usage
In order to get the most out of your m40L/m46L, 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 m40L/m46L will not experience burn-
in, as plasma displays do, nor will it retain images in any way.
Normal use of an m40L/m46L is defined as displaying continuously changing video
patterns or images. However, m40L/m46Ls 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 (12 hours or longer). 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.
Here are some guidelines to help you avoid TIR:
• Use the m40L/m46L 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 display when it is not in use. There are several ways to do this
automatically:
• To use the display’s real-time clock, see "Scheduling an Event" on page 64.
• To use your source computer’s Power Options Properties, set up your
computer to turn off the monitor when not in use. You also need to check the
DPMS
checkbox and set the
DPMS DELAY
box in the
BACKLIGHT CONTROL
menu.
• To use RS232 commands, see "RS232 Communication" on page 15.
Caution: We suggest turning off the backlight power for six hours per day. Normal use of any
LCD device does not cause TIR.
Static Image Applications
Typical static image applications include airports, transit stations, stock markets,
banks, and command/control installations, or anywhere a fixed image is displayed
continuously for 12 or more hours.