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HE WLE TT - PACKARD
SITE
ENVIRONMENTAL
REQUIREMENTS
F/;;' HEWLETT
~~ PACKARD
SITE
ENVIRONMENT AL
REQUIREMENTS
FOR
DISC/T APE DRIVES
Printed: JUNE 1986
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 con-
sequential damages in connection with the furnishing, performance or use of this material.
This document contains proprietary information which is protected by copyright. All rights
are reserved. No part of this document may be photocopied or reproduced without the prior
written consent of Hewlett-Packard Company.
HEWLETT -PACKARD COMPANY
P.O. BOX 39 BOISE. IDAHO B37D7. U.S.A.
Corerile-Sercore
Part No.: 5955-3456 5955-3456
Printed in U.S.A. E0686
PRINTING HISTORY
New editions incorporate all update material since the prevIOus edition. Updating Supplements, which are is-
sued between editions, contain additional and revised information to be incorporated into the manual by the
user. The date on the title page changes only when a new edition is published.
First Edition AUG 1981
Second Edition JAN 1982
Third Edition MAY 1982
Fourth Edition SEP 1982
Fifth Edition APR 1983
Sixth Edition AUG 1983
Seventh Edition JAN 1984
Update I I APR 1984
Eighth Edition MAY 1984
Ninth Edition NOV 1984
Update I 1 FEB 1985
Tenth Edition MAR 1985
Update I 14JUN 1985
Eleventh Edition . JUNE 1986
ii
CONTENTS I
Section I Page
INTRODUCTION
General Information 1-1
Customer Responsibility 1-2
Customer Engineering Services 1-2
Section II Page
ENVIRONMENTAL REQUIREMENTS
Introduction 2-1
Effects of Climate 2-1
Vibration and Shock 2-1
Altitude. 2-2
Elect romagne tic Su s ceptibil i ty 2-5
In t roduc t ion 2-5
Radiated Interference Susceptibility 2-5
Conducted Interference Susceptibility 2-6
Electrostatic Discharge .. 2-6
Magnetic Susceptibility . 2-6
Power Line Irregularities 2-6
Contaminant 5 2-8
Particulate Contaminants 2-8
Corrosive Contaminants 2-10
Cooling Requirements 2-11
Til ting 2-11
Section III Page
SITE PLANNING
Introduction 3-1
Environmental Specifications 3-1
EnVironments 3-1
Acoustics '" 3-2
iii
ILLUSTRATIONS AND TABLES
Figure Page
Random Vibration Profile 1: Operating. 2-3
Random Vibration Profile 2: Nonoperating 2-3
Random Vibration Profile 3: Operating. 2-4
Random Vibration Profile 4: Nonoperating 2-4
Shock Profile: Operating and Nonoperating. 2-5
Surge Voltage Waveforms .. 2-7
Sizes of Common Air Contaminants. 2-9
Contamination Sizes Relative to Disc/Head Spacing 2-9
HP 7911R/HP 7912R/HP 7914R Dimensions. A-15
HP 793X Standard and Optional Power Cords. A-37
Table Page
HP 7907 Disc Drive Specifications.