Silicon Graphics F190 User Manual page 15

Recommended use
CORRECT PLACEMENT AND ADJUSTMENT OF THE DISPLAY CAN
• For optimum performance, allow 20 minutes for warm-up.
• Adjust the display 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 display no closer than 40 cm and no further away than 70 cm from your
eyes. The optimal distance is 50 cm.
• Rest your eyes periodically by focusing on an object at least 6 m away. Blink often.
• Position the display at a 90° angle to windows and other light sources to minimize
glare and reflections. Adjust the display 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 antiglare filter.
• Clean the LCD display surface with a lint-free, non-abrasive cloth. Avoid using any
cleaning solution or glass cleaner!
• Adjust the display'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.
• Avoid displaying fixed patterns on the display for long periods of time to avoid image persistence (after-image effects).
• Get regular eye checkups.
Ergonomics
To realize the maximum ergonomics benefits, we recommend the following:
• Use the preset Size and Position controls with standard signals.
• Use the preset Color Setting.
• Use non-interlaced signals with a vertical refresh rate between 60-75 Hz.
• Do not use primary color blue on a dark background, as it is difficult to see and may produce eye fatigue to insufficient
contrast.
- Continued
REDUCE EYE, SHOULDER AND NECK FATIGUE. CHECK THE
FOLLOWING WHEN YOU POSITION THE DISPLAY:
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