1、INTERNATIONALSTANDARDIEC62122First edition2002-03Methods of measurement forconsumer-use digital VTRs Electronic and mechanical performancesMthodes de mesure pour les magntoscopesnumriques destins au grand public Performances lectroniques et mcaniquesReference numberIEC 62122:2002(E)LICENSED TO MECON
2、 Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.Publication numberingAs from 1 January 1997 all IEC publications are issued with a designation in the60000 series.For example,IEC 34-1 is now referred to as IEC 60034-1.Consolidated editionsThe IEC is now
3、 publishing consolidated versions of its publications.For example,edition numbers 1.0,1.1 and 1.2 refer,respectively,to the base publication,thebase publication incorporating amendment 1 and the base publication incorporatingamendments 1 and 2.Further information on IEC publicationsThe technical con
4、tent of IEC publications is kept under constant review by the IEC,thus ensuring that the content reflects current technology.Information relating tothis publication,including its validity,is available in the IEC Catalogue ofpublications(see below)in addition to new editions,amendments and corrigenda
5、.Information on the subjects under consideration and work in progress undertakenby the technical committee which has prepared this publication,as well as the listof publications issued,is also available from the following:IEC Web Site(www.iec.ch)Catalogue of IEC publicationsThe on-line catalogue on
6、the IEC web site(www.iec.ch/catlg-e.htm)enablesyou to search by a variety of criteria including text searches,technicalcommittees and date of publication.On-line information is also available onrecently issued publications,withdrawn and replaced publications,as well ascorrigenda.IEC Just PublishedTh
7、is summary of recently issued publications(www.iec.ch/JP.htm)is alsoavailable by email.Please contact the Customer Service Centre(see below)forfurther information.Customer Service CentreIf you have any questions regarding this publication or need further assistance,please contact the Customer Servic
8、e Centre:Email:custserviec.chTel:+41 22 919 02 11Fax:+41 22 919 03 00LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.INTERNATIONALSTANDARDIEC62122First edition2002-03Methods of measurement forconsumer-use digital VTRs Electronic and me
9、chanical performancesMthodes de mesure pour les magntoscopesnumriques destins au grand public Performances lectroniques et mcaniques IEC 2002 Copyright-all rights reservedNo part of this publication may be reproduced or utilized in any form or by any means,electronic ormechanical,including photocopy
10、ing and microfilm,without permission in writing from the publisher.International Electrotechnical Commission,3,rue de Varemb,PO Box 131,CH-1211 Geneva 20,SwitzerlandTelephone:+41 22 919 02 11 Telefax:+41 22 919 03 00 E-mail:inmailiec.ch Web:www.iec.chXFor price,see current cataloguePRICE CODECommiss
11、ion Electrotechnique InternationaleInternational Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 62122 IEC:2002(E)CONTENTSFOREWORD.71Scope and object.82Normative references.83Terms and definitions.94Measur
12、ing conditions.104.1General.104.2Environmental conditions.104.3Power supply.104.4Test signal.104.4.1Video test signal.104.4.2Colour bar signal.114.4.3Video input signal for measuring audio characteristics.114.5Measuring instruments.114.5.1Noise meter.114.5.2Audio signal generator.114.5.3Audio level
13、meter.114.5.4Audio mixed frequency oscillator.124.5.5Audio harmonic distortion meter.124.6Video test tape.125Methods of measurement for mechanical characteristics.125.1General.125.2Tape speed.125.2.1Test signal.125.2.2Measurement.125.2.3Presentation of the results.135.3Flatness of the RF envelope.13
14、5.3.1Test signal.135.3.2Block diagram.135.3.3Measurement.135.3.4Presentation of the result.145.4Linearity.145.4.1Test signal.145.4.2Measurement.145.4.3Presentation of the results.155.5Effective area starting position.155.5.1Test signal.155.5.2Measurement.155.5.3Presentation of the results.155.6Track
15、 displacement measurement by image processing.155.6.1Measurement system.155.6.2Image processing technique.155.6.3Measuring results.16LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.62122 IEC:2002(E)3 6Video characteristics(analogue inp
16、ut/output).176.1General.176.2Luminance amplitude frequency response.176.2.1Test signal.176.2.2Block diagram.176.2.3Measurement.176.2.4Presentation of results.186.3Chrominance amplitude frequency response.186.3.1Test signal.186.3.2Block diagram.186.3.3Measurement.186.3.4Presentation of results.186.4Luminance diagonal resolution.196.5Luminance frequency characteristics of diagonal resolution(i).196.6Luminance frequency characteristics of diagonal resolution(ii).196.7Luminance non-linear distortion
