HP D7171A - NetServer - LPr Manuale utente

Working

Comfort

To keep up with new

recommendations for

working comfortably and

safely, you also may wish to

regularly consult HPs

Working in Comfort web

site at:

http://www.hp.com/ergo/

wic.book Page i Friday, December 5, 1997 11:24 AM

Notice

The information contained in this document is subject to change without

notice.

Hewlett-Packard makes no warranty of any kind with regard to this

material, including, but not limited to, the implied warranties of

merchantability and fitness for a particular purpose. Hewlett-Packard

shall not be liable for errors contained herein or for incidental or

consequential damages in connection with the furnishing, performance,

or use of this material.

This document contains proprietary information that is protected by

photocopied, reproduced, or translated to another language without the

prior written consent of Hewlett-Packard Company.

Hewlett-Packard Company

1501 Page Mill Road, M/S 5UE

Palo Alto, California 94304-1213

USA

1997 Hewlett-Packard Company

wic.book Page ii Friday, December 5, 1997 11:24 AM

Contents

iii

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

About Repetitive Strain Injury . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

What is RSI? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

What causes RSI? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

What can I do to avoid RSI? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

What if I experience discomfort? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Preparing Your Work Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Your Workspace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Your Chair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Your Work Surface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Lighting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Work Environment Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Your Work Posture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Setting Up Your HP Computing Equipment . . . . . . . . . . . . . . . . . . . . 12

Your HP Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Monitor Use Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Document Holders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Your HP Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Mice and Other Input Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Headphones and Speakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Your HP Notebook Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Preparing Your Mobile Work Environment . . . . . . . . . . . . . . . . . . . . . . . 20

Using Your Mobile Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Comfort and Safety Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Overall. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Information Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

wic.book Page iii Friday, December 5, 1997 11:24 AM

wic.book Page iv Friday, December 5, 1997 11:24 AM

Working in Comfort

wic.book Page 1 Friday, December 5, 1997 11:24 AM

Working in Comfort

Introduction

Thank you for selecting HP computing equipment.

To optimize your comfort and productivity, it is important that you set

up your work area correctly and use your HP equipment properly. With

that in mind, we have developed some set-up and use recommendations

for you to follow based on established ergonomic principles.

Improper and prolonged use of keyboards and input devices are among

those tasks that have been associated with repetitive strain injury (RSI)

to soft tissues in the hands and arms. If you experience discomfort or

pain while using any computing equipment, discontinue use

immediately and consult your physician as soon as possible. For more

information on RSI, you may wish to consult the About Repetitive

Strain Injury section.

Please study the recommendations offered here and consult the

Information Sources listed in this guide. Included there are references

to relevant parts of international standards, regulations and guidelines,

such as ISO 9241 and the European Community Display Screen

Equipment directive. You may also wish to consult your employer's

human resources department or other relevant departments for

guidance specific to your company. For a quick summary of the

recommendations, refer to the Comfort and Safety Checklist.

Note that the recommendations and quoted dimensions in this guide

are designed to accommodate a broad range of people. If you fall

outside this range you may need to adapt the recommendations

accordingly. For example, if you are very tall, your work surface may

need to be higher than indicated in this guide.

Thank you, again, for choosing HP computing equipment.

wic.book Page 2 Friday, December 5, 1997 11:24 AM

Working in Comfort

Introduction

About Repetitive Strain Injury

Because your comfort and safety are our primary concern, we strongly

recommend that you use HP computing equipment in accordance with

established ergonomic principles and recommendations. Scientific

literature suggests that there may be a relationship between injury to

soft tissuesespecially in the hands and armsand prolonged

improper use of keyboards or other equipment requiring repeated

motions of the hands and forearms. This literature also suggests that

there are many other risk factors that may increase the chance of such

injury, commonly called Repetitive Strain Injury.

What is RSI? Repetitive Strain Injury (RSIalso known as cumulative trauma

disorder or repetitive motion injury) is a type of injury where soft

tissues in the body, such as muscles, nerves, or tendons, become

irritated or inflamed. RSI has been a reported problem for those who

perform repetitive tasks such as assembly line work, meatpacking,

sewing, playing musical instruments, and computer work. RSI also has

been observed in those who frequently engage in activities such as

carpentry, knitting, housework, gardening, tennis, windsurfing and

lifting children.

What causes RSI? The specific causes of RSI have not been established. Nevertheless, the

incidence of RSI has been associated with a variety of risk factors,

including:

 Too many uninterrupted repetitions of an activity or motion.

 Performing an activity in an awkward or unnatural posture.

 Maintaining static posture for prolonged periods.

 Failing to take frequent short breaks.

 Other environmental and psychosocial factors.

In addition, there have been reports associating the occurrence of RSI

with the use of computer keyboards, mice, and other input devices.

Also, certain medical conditions, such as rheumatoid arthritis, obesity

and diabetes, may predispose some people to this type of injury.

wic.book Page 3 Friday, December 5, 1997 11:24 AM

Working in Comfort

Introduction

What can I do to avoid

RSI?

Some people who use computers may experience physical discomfort

during their use. This discomfort may be a symptom of a repetitive

strain injury. Properly setting up and using computing equipment can

help to minimize your chances of experiencing this discomfort. Well-

designed and properly adjusted equipment alone may not be sufficient

to eliminate all potential problems. Maintaining good posture and

positioning when working on computers also has a significant bearing on

your comfort.

What if I experience

discomfort?

If you are experiencing any discomfort, seek professional medical

advice immediately. Typically, the earlier a problem is diagnosed and

treated, the easier it is to resolve.

wic.book Page 4 Friday, December 5, 1997 11:24 AM

Working in Comfort

Preparing Your Work Environment

When using HP computing equipment, it's important that your work

environment contribute to your comfort and productivity. To help you

achieve the proper environment, we have developed recommendations

for optimizing your workspace, seating, work surface and lighting

arrangements. You, or both you and your employer, can best determine

your specific needs.

Your Workspace

Sufficient workspace should be available to allow you to set up your

equipment in a convenient, comfortable arrangement.

 The work environment should be as quiet and free of distraction as

possible.

Window

wic.book Page 5 Friday, December 5, 1997 11:24 AM

Working in Comfort

Preparing Your Work Environment

 For better eye comfort, you should avoid reflective coverings on the

ceiling, walls and floor as well as excessive contrast between the

screen and its surroundings.

 As with any indoor environment, your workspace should be well

ventilated. If possible, adjust the temperature to whatever is com-

fortable for you. If you can't adjust the temperature, wear appropri-

ate clothing. Try to avoid working close to air-conditioning or heater

vents.

 To prevent muscle stiffness, you must have enough space to move

around and vary your position. Try not to remain in one position for

extended periods of time.

Your Chair

It's very important that your chair provides a comfortable sitting

position and offers the following features:

A stable base, such as five legs with casters. Make sure the

casters are designed for the type of floor you have in your work-

space, whether it is bare or carpeted.

Seat Back Tilt

Seat Back

Height

Seat Pan Tilt

5°-10°

Seat Pan Height

40-52 cm

wic.book Page 6 Friday, December 5, 1997 11:24 AM

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