IBM WS525 manual Cont Recommendations for Proper Setup and Use, Adjust

Table 1 (Cont.)		Recommendations for Proper Setup and Use
Adjust	To	. . .
	6 Keep your upper arms straight down at your sides, elbows
		close to your sides to support your arm weight. Forearms
		should be at a 70° to 90° angle.
Head	7	Avoid neck strain. Your head should incline downward, but
		no more than 15° to 20°.
Terminal	8 Keep eye level and the correct distance for proper vision.
Eyes	9 Avoid eye fatigue, which can be caused by glare, image
		quality, uncomfortable furniture, eye height, and
		uncorrected vision. If you cannot read the screen at
		different distances, you may need special glasses. Relax
		your eyes periodically by looking at distant objects.
Work		Take periodic work breaks. Morning, lunch, and afternoon
Breaks		breaks meet most recommendations. Take advantage of
		work breaks to move around and do other movements.
Lighting		Avoid direct lighting or sunlight on the screen, which
		causes glare and reflections. The terminal screen has an
		antiglare treatment to reduce glare. Place lighting behind
		or to the side of your work area, and distribute the lighting
		evenly on your work area. Adjust the terminal brightness
		and the contrast controls as needed.
Noise		Keep background noise at a minimum. Background noise
		above 65 dBA is tiring. Sound-absorbing materials, such
		as curtains, carpeting, and acoustic tile, can help reduce
		background noise.
Temperature		20°C to 23°C (68°F to 74°F)
Humidity		30% to 70%
Ventilation		Provide adequate air ventilation for equipment operation
		and to avoid fatigue.
Space		More than 70 cm (28 in) center to center, preferably more
between		than 152 cm (60 in).
terminals

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