ISO INTERNATIONAL STANDARD 6433 Second edition 2012-05-15 Technical product documentation Part references Documentation technique de produits - Références de piece Reference number ISO 6433:2012(E) ISO @ISO2012 ISO 6433:2012(E) COPYRIGHTPROTECTEDDOCUMENT ISO 2012 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester ISO copyright office Case postale 56 · CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyright@iso.org Web www.iso.org Published in Switzerland ii @ ISO 2012 -All rights reserved ISO 6433:2012(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (lsOmemberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughIso non-governmental, in liaison with IsO, also take part in the work. IsO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEc Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO6433wasprepared by Technical CommitteeISO/TC 10, Technicalproduction documentation, Subcommittee SC 1, Basic conventions. This second edition cancels and replaces the first edition (isO 6433:1981), which has been technically revised @ISO2012-All rightsreserved ii