IEC IEC 60565-1 Edition 1.02020-04 NTERNATIONAL STANDARD NORME INTERNATIONALE colour nside Underwater acoustics - Hydrophones - Calibration of hydrophones - Part 1: Procedures for free-field calibration of hydrophones Acoustique sous-marine - Hydrophones - Etalonnage des hydrophones - IEC 60565-1:2020-04(en-fr) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright @ 2020 IEC, Geneva, Switzerland or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or IEC's member National Committee in the country of the requester. if you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication, piease contact the address below or yourlocal IECmemberNational Committeeforfurtherinformation. Droits de reproduction réserves. Sauf indication contraire, aucune partie de cette publication ne peut étre reproduite ni les microfilms, sans I'accord écrit de I'EC ou du Comite national de I'IEc du pays du demandeur. Si vous avez des questions sur le copyright de I'lEC ou si vous desirez obtenir des droits supplementaires sur cette publication, utilisez les coordonnees ci-apres ou contactez le Comite national de I'IEC de votre pays de residence. IEC CentralOffice Tel.: +41 22 919 02 11 3, rue de Varembé [email protected] CH-1211 Geneva 20 www.iec.ch Switzerland About theIEC International Standards for all electrical, electronic and related technologies. AboutIEcpublications The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the latest edition, a corrigendum oran amendment mighthave been published. IEC publications search - webstore.iec.ch/advsearchform Electropedia -www.electropedia.org The world's leading online dictionary on electrotechnology. The advanced search enables to find IEC publications by a technical containing more than 22 000 terminological entries in English varietyof criteria(reference committee,...). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages and withdrawn publications. Also known as the International Electrotechnical Vocabulary (IEV) online. IEC Just Published - webstore.iec.ch/justpublished Stay up to date on all new IEC publications.Just Published IEc Glossary -std.iec.ch/glossary details all new publications released. Available online and once 67 000 electrotechnical terminology entries in English and a month by email. French extracted from the Terms and Definitions clause of IEC publications issued since 2002. Some entries have been IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and If you wish to give us your feedback on this publication or need CISPR. further assistance, ，please contact theCustomer Service Centre: [email protected]. Apropos de I'IEc La Commission Electrotechnique Internationale (IEC) est la premiere organisation mondiale qui élabore et publie des A propos des publications IEC Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possedez I'édition la plus recente, un corrigendum ou amendement peut avoir éte publie. RecherchedepublicationsIEc Le premierdictionnaire d'électrotechnologie en ligne au monde, avec plus de 22 000 articles terminologiques en anglais et en webstore.iec.ch/advsearchform La recherche avancee permet de trouver des publications IEC frangais,ainsi que les termes équivalents dans 16 langues en utilisant differents criteres (numero de reference, texte, additionnelles. Egalement appele Vocabulaire comite d'etudes,...). Elle donne aussi des informations sur les Electrotechnique International (IEV) en ligne. projets et les publications remplacees ou retirees Glossaire IEC -std.iec.ch/glossary 67 000 entrees terminologiques electrotechniques, en anglais IEC Just Published-webstore.iec.ch/justpublished Restez informe sur lesnouvellespublicationsIEC, Just et en fran