BS-EN-62121-2001.pdf
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1、BRITISH STANDARD BS EN 62121:2001 Methods of measurement for minidisc recorders/players The European Standard EN 62121:2001 has the status of a British Standard ICS 33.160.30 ? Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 03:16:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 62121:2001
2、 This British Standard, having been prepared under the direction of the Electrotechnical Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 30 September 2002 BSI 30 September 2002 ISBN 0 580 40469 2 National foreword This British
3、 Standard is the official English language version of EN 62121:2001. It is identical with IEC 62121:2001. The UK participation in its preparation was entrusted to Technical Committee EPL/100, Audio, video and multimedia systems, which has the responsibility to: A list of organizations represented on
4、 this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by u
5、sing the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity
6、 from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in
7、the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 43 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed
8、Copy: sheffieldun sheffieldun, na, Mon Nov 13 03:16:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARDEN 62121 NORME EUROPENNE EUROPISCHE NORMDecember 2001 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee
9、 fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2001 CENELEC -All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 62121:2001 E ICS 33.160.30 English version Methods of measurement for minidisc recorders/
10、players (IEC 62121:2001) Mthodes de mesure des appareils de lecture et denregistrement pour les minidisques (CEI 62121:2001) Messverfahren fr MiniDisc- Recorder/Wiedergabegerte (IEC 62121:2001) This European Standard was approved by CENELEC on 2001-12-01. CENELEC members are bound to comply with the
11、 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 application to the Central Secretariat or
12、 to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the offici
13、al versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sheffield
14、un sheffieldun, na, Mon Nov 13 03:16:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Foreword The text of document 100B/392/FDIS, future edition 1 of IEC 62121:2001, prepared by IEC TC 100, Audio, video and multimedia systems and equipment, was submitted to the IEC-CENELEC parallel vote and was approv
15、ed by CENELEC as EN 62121 on 2001-12-01. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement(dop) 2002-09-01 latest date by which the national standards conflicting with the EN have to
16、be withdrawn(dow) 2004-12-01 Annexes designated “normative“ are part of the body of the standard. Annexes designated “informative“ are given for information only. In this standard, annexes A and ZA are normative and annexes B and C are informative. Annex ZA has been added by CENELEC. _ Endorsement n
17、otice The text of the International Standard IEC 62121:2001 was approved by CENELEC as a European Standard without any modification. _ Page 2 EN 62121:2001 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 03:16:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 62121 ? IEC:0201 3 CONTENTS 1Scope an
18、d object5 2Normative references .5 3Terms and definitions .6 4Information required from manufacturers of MD recorders 7 4.1Introduction .7 4.2Identification8 4.3Mechanical characteristics 8 4.4Electrical characteristics8 4.5Environmental conditions 8 4.6Mechanical performance requirements 9 4.7Elect
19、rical performance requirements .9 4.8Results of measurement9 5Measuring conditions9 5.1Introduction .9 5.2Environmental conditions 10 5.3Power supply.10 5.4Input conditions.10 5.5Output condition10 5.6MD recorder setting.11 5.7Other conditions11 5.8Test disc .11 5.9Performance claims.12 5.10 Measuri
20、ng equipment 12 5.11 Additional considerations.14 6Measurement of mechanical parameters 14 6.1Shock and vibration resistance14 6.2Acoustic noise.17 7Measurement of electrical parameters 18 7.1Maximum power consumption18 7.2Frequency response18 7.3Signal to noise ratio.19 7.4Dynamic range 21 7.5Disto
21、rtion and noise 21 7.6Channel separation .22 7.7Deviation of emphasis characteristic .23 7.8Modulation distortion .25 7.9Phase difference between channels 26 7.10 Minimum input level.27 7.11 Output voltage.27 7.12 Pitch deviation.28 7.13 Access times.29 7.14 Trackability30 Page 3 EN 62121:2001 Licen
22、sed Copy: sheffieldun sheffieldun, na, Mon Nov 13 03:16:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 62121 ? IEC:0201 4 Annex A (normative) Test disc requirements32 Annex B (informative) Table of measurements Results .39 Annex C (informative) Available test disc.41 Annex ZA (normative) Normative re
23、ferences to international publications with their corresponding European publications .42 Figure A.1 Sweep signal 38 Table 1 Acceleration and duration of pulse 15 Table A.1 Recording signals of the test disc.34 Table A.2 Composition of the recording signals38 Table B.1 Table of measurements Results
24、39 Page 4 EN 62121:2001 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 03:16:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 62121 ? IEC:0201 5 METHODS OF MEASUREMENT FOR MINIDISC RECORDERS/PLAYERS 1 Scope and object This International Standard specifies the measuring methods for recording and
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