NEC Generation N3000 M760s User Manual page 19

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Extend your lower legs slightly so that the angle between your thighs and lower legs is 90° or more.
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Place your feet flat on the floor. Only use a footrest when attempts to adjust your chair and workstation
fail to keep your feet flat.
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Be sure that you have adequate clearance between the top of your thighs and the underside of your
workstation.
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Use armrests or forearm supports to support your forearms. If adjustable, the armrests or forearm
supports should initially be lowered while all the other adjustments discussed in this section are made.
Once all these adjustments are completed, raise the armrests or adjust the forearm supports until they
touch the forearms and allow the shoulder muscles to relax.
Your Desk
There is no specific height recommended for your desk. This can vary between 60 to 70 cm, depending
upon your size. The standard workaround is that it should be at approximately your elbow height.
The desktop should be clean and organized in such a way that frequently used objects are close enough
without excessive reaching. If you use a document holder, it should be placed at approximately the same
height as the monitor and at the same distance from the eyes to prevent frequent eye shifts.
The area underneath the desk should be clean to accommodate your legs and allow for stretching.
Your Input Devices
Note the following points when positioning your computer or any external input devices.
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Position your keyboard directly in front of you. Avoid reaching when using your keyboard or mouse.
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If you use a mouse, position it at the same height as the keyboard and next to the keyboard. Keep your
wrists straight and use your entire arm when moving a mouse. Do not grasp the mouse tightly. Grasp
the mouse lightly and loosely.
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Adjust the keyboard height so that your elbows are near your body and your forearms are parallel to the
floor, with your forearms resting on either armrests or forearm supports, in the manner described
previously. If you do not have armrests or forearm supports, your upper arms should hang comfortably
at your sides.
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Adjust the keyboard slope so that your wrists are straight while you are typing.
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Type with your hands and wrists floating above the keyboard. Use a wrist pad only to rest your wrists
between typing. Avoid resting your wrists on sharp edges.
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Type with your wrists straight. Instead of twisting your wrists sideways to press hard-to-reach keys,
move your whole arm. Keep from bending your wrists, hands, or fingers sideways.
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Press the keys gently; do not bang them. Keep your shoulders, arms, hands and fingers relaxed.
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Preface
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