EUROPEANSTANDARD EN 62333-1 NORMEEUROPEENNE July 2006 EUROPAISCHENORM ICS 29.100.10 English version Noise suppression sheet for digital devices and equipment Part 1: Definitions and general properties (IEC 62333-1:2006) Plaque reduisant lebruit des dispositifs Rauschunterdruckungsschichtfur etappareilsnumeriques digitale Gerate und Einrichtungen Partie 1: Definitions et proprietés Teil 1: Begriffe und allgemeine genérales Eigenschaften (CEI62333-1:2006) (IEC62333-1:2006) This European Standard was approved by CENELEC on 2006-06-01.CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on applicationtotheCentralSecretariatortoanyCENELECmember This European Standard exists in two official versions (English and German). A version in any other language Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, ireland, italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. CENELEC EuropeanCommitteeforElectrotechnical Standardization Comite Europeen de Normalisation Electrotechnique Europaisches Komiteefur Elektrotechnische Normung Central Secretariat: rue de Stassart35, B-1050 Brussels @2006CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members Ref. No. EN 62333-1:2006 E EN 62333-1:2006 - 2 - Foreword components and ferrite materials, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 62333-1 on 2006-06-01. This Standard is to be used in conjunction with EN 62333-2. The following dates were fixed: latestdatebywhichtheENhastobe implemented at national level by publication of an identical national standard or by endorsement (dop) 2007-03-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2009-06-01 AnnexZAhasbeenaddedbyCENELEC. Endorsementnotice The text of the International Standard IEC 62333-1:2006 was approved byCENELEC as a European Standard without any modification. - 3 - EN62333-1:2006 NOISESUPPRESSIONSHEET FORDIGITALDEVICESANDEQUIPMENT- Part 1:Definitions and general properties Scope This part of IEC 62333 provides terms and definitions for an electromagnetic noise suppression sheet for digital devices and equipment used in a frequency range of between 30 MHz to 30 GHz, and refers to the influence on the signal by usage of a noise suppression sheet.Guidanceisalsogiven for uniform presentationofthe properties noise of a suppression sheet, intended for use in manufactures'technical data. A noise suppression sheet is distinguished from RF wave absorbers used in free space This part of IEC 62333 is limited to establishing terms and definitions. It constitutes a concise reference for Part 2 of the standard. Part 2 specifies in detail the measurement of parameters defined in Part 1. The two parts of IEC 62333 are therefore closely related, and are intended to be used together. NOTE This standard also specifies the influences on signal lines by using these sheets. 2 Normative reference The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies.For undated references, the latest edition of the referenced document (including any amendments)applies. IEC60050,InternationalElectrotechnicalVocabulary(IEV) IEC 62333-2,Noise suppression sheet for digitaldevices and equipment-Part 2:Measuring methods 3 Terms,definitionsandsymbols 3.1 Termsanddefinitions For the purposes of this document, the terms a