13
Recommended
Usage
Recommended Usage
In order to get the most out of your m52L, 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 m52L will not experience burn-in, as plasma displays do, nor
will it retain images in any way.
Normal use of a m52L is defined as displaying continuously
changing video patterns or images. However, m52Ls can experi-
ence 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.
Note: Normal use of any LCD device does not cause TIR.

Static Image Applications

Typical static image applications include airports, transit sta-
tions, stock markets, banks, and command/control installations,
or anywhere a fixed image is displayed continuously for 12 or
more hours.

Static Image Display Guidelines

Here are some guidelines to help you avoid TIR:
• Use the m52L to show moving images or still pictures that
change regularly.
• Turn the display off when it is not in use. There are several ways
to do this automatically:
• To use the display’s real-time clock, schedule an event. See
the Installation Guide CD for information.
• 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 the Installation Guide CD.
Caution: It is suggested that you turn off the backlight power for six
hours per day. When using high-contrast images, reposition the
images frequently.

Normal Use Thermal Guidelines

Normal use of an m52L is defined as operating in the open air to
prevent heat buildup, and without direct or indirect heat
sources such as adjacent displays, lighting fixtures, heating
ducts, or direct sunlight that can cause the display to experience
high operating temperatures. At 2000m or below, the maximum
ambient operating temperature cannot be above 35º C (30º C
with cover glass) nor below the minimum ambient operating
temperature of 0º C. If one of these conditions exists, it is up to
the installer to ensure that display placement is changed, ther-
mal shielding is provided and/or additional ventilation is pro-
vided to keep the display within its nominal operating
parameters.
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