NEC 90 - Manuel (Page 10)

CORRECT PLACEMENT AND ADJUSTMENT OF THE MONITOR
CAN REDUCE EYE, SHOULDER AND NECK FATIGUE. CHECK THE
FOLLOWING WHEN YOU POSITION THE MONITOR:
Recommended Use cont.
• Adjust the monitor height so that the top of
the screen is at or slightly below eye level.
Your eyes should look slightly downward
when viewing the middle of the screen.
• Position your monitor no closer than 12 inches
and no further away than 28 inches from your
eyes. The optimal distance is 18 inches.
• Rest your eyes periodically by focusing on
an object at least 20 feet away. Blink often.
• Position the monitor at a 90 ° angle to
windows and other light sources to minimize
glare and reflections. Adjust the monitor tilt so that ceiling lights do not reflect
on your screen.
• If reflected light makes it hard for you to see your screen, use an anti-glare filter.
• Clean your monitor regularly. Use a lint-free, non-abrasive cloth and a
non-alcohol, neutral, non-abrasive cleaning solution or glass cleaner to
minimize dust.
• Adjust the monitor’s brightness and contrast controls to enhance readability.
• Use a document holder placed close to the screen.
• Position whatever you are looking at most of the time (the screen or
reference material) directly in front of you to minimize turning your head
while you are typing.
• Get regular eye checkups.
Ergonomics
To realize the maximum ergonomics benefits, we recommend the following:
• Adjust the Brightness until the background raster disappears
• Do not position the Contrast control to its maximum setting
• Use the preset Size and Position controls with standard signals
• Use the preset Color Setting and Sides Left/Right controls
• Use non-interlaced signals with a vertical refresh rate between 75-120Hz for
the MultiSync ® 50/70 and 75-160Hz for the MultiSync 90
• Do not use primary color blue on a dark background, as it is difficult to see
and may produce eye fatigue due to insufficient contrast
For more detailed information on setting up a healthy work environment, call NEC
at (800) 820-1230, NEC FastFacts ™ information at (800) 366-0476 and request
document #900108 or write the American National Standard for Human Factors
Engineering of Visual Display Terminal Workstations – ANSI-HFS Standard
No. 100-1988 – The Human Factors Society, Inc. P.O. Box 1369, Santa Monica,
California 90406.
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