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1、BRITISH STANDARD BS EN 62122: 2002 Methods of measurement for consumer-use digital VTRs Electronic and mechanical performances The European Standard EN 62122:2002 has the status of a British Standard ICS 33.160.40 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy:
2、sheffieldun sheffieldun, na, Mon Nov 13 04:29:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 62122:2002 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 Str
3、ategy Committee on 11 July 2002 BSI 11 July 2002 ISBN 0 580 39986 9 National foreword This British Standard is the official English language version of EN 62122:2002. It is identical with IEC 62122:2002. The UK participation in its preparation was entrusted by Technical Committee EPL/100, Audio, vid
4、eo and multimedia systems, to Subcommittee EPL/100/2, Recording, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. From 1 January 1997, all IEC publications have the number 60000 added to the old number. For instanc
5、e, IEC 27-1 has been renumbered as IEC 60027-1. For a period of time during the change over from one numbering system to the other, publications may contain identifiers from both systems. Cross-references The British Standards which implement international or European publications referred to in thi
6、s document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using 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 con
7、tract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, an
8、d keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 49, and a back cover. The BSI copyright date displayed in this documen
9、t indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 04:29:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARDEN 62122 NORME EUROPENNE EUROPISCHE NORMJune 2002 CENELEC European Comm
10、ittee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2002 CENELEC -All rights of exploitation in any form and by any means reserved worldwide for CENELEC
11、members. Ref. No. EN 62122:2002 E ICS 33.160.40 English version Methods of measurement for consumer-use digital VTRs - Electronic and mechanical performances (IEC 62122:2002) Mthodes de mesure pour les magntoscopes numriques destins au grand public - Performances lectroniques et mcaniques (CEI 62122
12、:2002) Messverfahren fr digitale Videobandgerte fr den Heimgebrauch - Elektrische und mechanische Leistungsfhigkeit (IEC 62122:2002) This European Standard was approved by CENELEC on 2002-05-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditi
13、ons 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 to any CENELEC member. This European Standard exists in thre
14、e 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 official versions. CENELEC members are the national electrotechnica
15、l 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: sheffieldun sheffieldun, na, Mon Nov 13 04:29:31 GMT+00:00 2006, Uncon
16、trolled Copy, (c) BSI EN 62122:2200- - 2 Foreword The text of document 100/452/FDIS, future edition 1 of IEC 62122, prepared by IEC TC 100, Audio, video and multimedia systems and equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 62122 on 2002-05-01. The fol
17、lowing 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)2003-02-01 latest date by which the national standards conflicting with the EN have to be withdrawn(dow)2005-05-01 Annexes designated “n
18、ormative“ are part of the body of the standard. Annexes designated “informative“ are given for information only. In this standard, annex ZA is normative and annex A is informative. Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 62122:2002 was appr
19、oved by CENELEC as a European Standard without any modification. _ Page 2 EN 62122:2002 11 July 2002 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 04:29:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 22126 ? (2002:CEI)E 3 CONTENTS 1Scope and object .8 2Normative references.8 3Terms and defin
20、itions.9 4Measuring conditions .10 4.1General .10 4.2Environmental conditions .10 4.3Power supply.10 4.4Test signal.11 4.4.1Video test signal 11 4.4.2Colour bar signal .11 4.4.3Video input signal for measuring audio characteristics11 4.5Measuring instruments.11 4.5.1Noise meter.11 4.5.2Audio signal
21、generator .11 4.5.3Audio level meter.12 4.5.4Audio mixed frequency oscillator12 4.5.5Audio harmonic distortion meter.12 4.6Video test tape 12 5Methods of measurement for mechanical characteristics 12 5.1General .12 5.2Tape speed .12 5.2.1Test signal.12 5.2.2Measurement.13 5.2.3Presentation of the re
22、sults .13 5.3Flatness of the RF envelope 13 5.3.1Test signal.13 5.3.2Block diagram13 5.3.3Measurement.14 5.3.4Presentation of the result .14 5.4Linearity 14 5.4.1Test signal.14 5.4.2Measurement.14 5.4.3Presentation of the results .15 5.5Effective area starting position.15 5.5.1Test signal.15 5.5.2Me
23、asurement.15 5.5.3Presentation of the results .15 5.6Track displacement measurement by image processing .15 5.6.1Measurement system.15 5.6.2Image processing technique.16 5.6.3Measuring results 16 Page 3 EN 62122:2002 11 July 2002 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 04:29:31 GMT+00
24、:00 2006, Uncontrolled Copy, (c) BSI 4 22126 ? (2002:CEI)E 6Video characteristics (analogue input/output) .17 6.1General .17 6.2Luminance amplitude frequency response17 6.2.1Test signal.17 6.2.2Block diagram17 6.2.3Measurement.18 6.2.4Presentation of results .18 6.3Chrominance amplitude frequency re
25、sponse 18 6.3.1Test signal.18 6.3.2Block diagram18 6.3.3Measurement.18 6.3.4Presentation of results .19 6.4Luminance diagonal resolution.19 6.5Luminance frequency characteristics of diagonal resolution (i)19 6.6Luminance frequency characteristics of diagonal resolution (ii).19 6.7Luminance non-linea
26、r distortion .19 6.8Luminance waveform distortion (linear distortion).19 6.9Chrominance waveform distortion 19 6.9.1Test signal.19 6.9.2Block diagram20 6.9.3Measurement.20 6.9.4Presentation of results .20 6.10Luminance vertical waveform distortion20 6.11Chrominance vertical waveform distortion 20 6.
27、12Automatic Gain Control (AGC) operation20 6.13Chrominance to luminance horizontal displacement .20 6.14Chrominance to luminance vertical displacement .21 6.15Luminance signal-to-noise ratio .21 6.15.1 General .21 6.15.2 Test signal.21 6.15.3 Block diagram21 6.15.4 Measurement.21 6.15.5 Presentation
28、 of the results .22 6.16Chrominance signal-to-noise ratio23 6.16.1 General .23 6.16.2 Test signal.23 6.16.3 Block diagram23 6.16.4 Measurement.23 6.16.5 Presentation of the results .24 7Composite signal decoding characteristics (luminance and chrominance separation)24 7.1Luminance signal separation
29、(general).24 7.2Luminance signal separation at colour change points .24 7.3Chrominance signal separation 25 7.4Chrominance signal separation with three dimensional processing .25 7.4.1Test signal.25 7.4.2Block diagram25 7.4.3Measurement.25 7.4.4Presentation of results .25 Page 4 EN 62122:2002 11 Jul
30、y 2002 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 04:29:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 22126 ? (2002:CEI)E 5 7.5Luminance signal separation with three dimensional signal processing.25 7.5.1Test signal.25 7.5.2Block diagram26 7.5.3Measurement.26 7.5.4Presentation of results
31、 .26 8Audio characteristics (analogue input/output) .26 8.1General .26 8.2Audio operational output voltage (with AGC) 26 8.2.1Test signal.26 8.2.2Block diagram26 8.2.3Measurement.26 8.2.4Presentation of results .26 8.3Audio operational input voltage (without AGC)27 8.3.1Test signal.27 8.3.2Block dia
32、gram27 8.3.3Measurement.27 8.3.4Presentation of results .27 8.4Audio maximum output voltage 27 8.4.1Test signal.27 8.4.2Block diagram27 8.4.3Measurement.27 8.4.4Presentation of results .27 8.5Amplitude frequency response .27 8.5.1Test signal.27 8.5.2Measurement.27 8.6Phase difference between channel
33、s .28 8.6.1Test signal.28 8.6.2Measurement.28 8.6.3Presentation of results .28 8.7Signal-to-noise ratio.28 8.8Dynamic range.28 8.8.1Test signal.28 8.8.2Measurement.28 8.8.3Presentation of results .28 8.9Harmonic distortion28 8.10Inter-modulation distortion .28 8.10.1 Test signal.28 8.10.2 Measuremen
34、t.29 8.10.3 Presentation of result.29 8.11Channel separation29 8.11.1 Test signals .29 8.11.2 Measurement.29 8.11.3 Presentation of results .29 8.12Wow-flutter29 8.13Pitch difference between record and playback29 8.13.1 Test signal.29 8.13.2 Measurement.29 8.13.3 Presentation of results .29 9Classif
35、ication of the characteristics to be specified .29 Page 5 EN 62122:2002 11 July 2002 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 04:29:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 6 22126 ? (2002:CEI)E Annex A (informative) Error rate.44 A.1Definition .44 A.2Block diagram44 A.3Measuremen
36、t.44 A.4Presentation of the results45 A.5Example 145 A.6Example 245 Annex ZA (normative) Normative reference to international publications with their corresponding European publications .48 Bibliography47 Figure 1 Basic block diagram of measurement system31 Figure 2 Measuring method for track interv
37、al 31 Figure 3 Measuring block diagram for RF envelope flatness31 Figure 4 Measuring method for RF envelope flatness32 Figure 5 Cross-tape track height for DV format.32 Figure 6 Cross-tape track height for D-VHS format .32 Figure 7 Measuring method for linearity32 Figure 8 Measuring method for the s
38、tarting position33 Figure 9 Block diagram of the measurement system .33 Figure 10 Schematic diagram of the image processing technique34 Figure 11 Illustration of track displacement distribution (model) 35 Figure 12 Example of calculation results.35 Figure 13 Test signal for luminance amplitude frequ
39、ency response.36 Figure 14 Measuring block diagram for composite video signal .36 Figure 15 Measuring block diagram for S video signal.36 Figure 16 Test signal for chrominance amplitude frequency response.37 Figure 17 Test signal for luminance non-linear distortion.37 Figure 18 Test signal for lumin
40、ance waveform distortion .37 Figure 19 Test signal for chrominance waveform distortion .38 Figure 20 Measuring method for chrominance waveform distortion .38 Figure 21 Composite video test signal for luminance signal-to-noise ratio .39 Figure 22 S luminance test signal for luminance signal-to-noise
41、ratio39 Figure 23 S chrominance test signal for luminance signal-to-noise ratio39 Figure 24 Block diagram for composite video input .39 Figure 25 Block diagram for S video input.40 Figure 26 Composite video test signal for chrominance signal-to-noise ratio .40 Figure 27 S luminance test signal for c
42、hrominance signal-to-noise ratio40 Figure 28 S chrominance test signal for chrominance signal-to-noise ratio41 Figure 29 Test signal for 3D chrominance signal separation41 Figure 30 Measuring block diagram for chrominance signal separation .41 Figure 31 Measuring method for 3D chrominance signal sep
43、aration42 Page 6 EN 62122:2002 11 July 2002 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 04:29:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 22126 ? (2002:CEI)E 7 Figure 32 Test signal for 3D luminance signal separation42 Figure 33 Measuring block diagram for luminance signal separation .4
44、2 Figure 34 Measuring method for 3D luminance signal separation43 Figure 35 Block diagram for audio characteristics.43 Figure A 1 Structure of Data-synchronisation blocks .46 Figure A 2 Structure of DV format data-synchronisation blocks .46 Figure A 3 Structure of D-VHS format data-synchronisation b
45、locks .46 Table 1 Setting of the colour noise meter for luminance measurement .22 Table 2 Example: white level of test signal (8 bit system) .22 Table 3 Setting of the colour noise meter for chrominance measurement .23 Table 4 Example: Chrominance level of test signal (8 bit system) .24 Table 5 Clas
46、sification of the characteristics to be specified 30 Page 7 EN 62122:2002 11 July 2002 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 04:29:31 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 8 22126 ? (2002:CEI)E METHODS OF MEASUREMENT FOR CONSUMER-USE DIGITAL VTRs ELECTRONIC AND MECHANICAL PERFO
47、RMANCES 1 Scope and object This standard specifies the basic methods of measurement for evaluating the electronic and mechanical performances of consumer-use digital VTRs. The formats of open reel VTRs, Beta, VHS, and 8 mm VTRs have been standardized. Methods of measurement for these analogue VTRs h
48、ave been standardized in IEC 61041-1, IEC 61041-2, IEC 61041-3, IEC 61041-4, IEC 61041-5, and IEC 61146-3. Digital VTR 6,35 mm DV format and 12,65 mm D-VHS format have now been brought on the market. The methods of measurement for these consumer-use digital VTRs should be specified and standardized.
49、 With these measurement techniques, some items for the evaluation of performances specific to digital VTRs have also been included. There are two objectives for the proposed methods of measurement. One is to check the interchangeability and characteristics of the equipment under test which are indispensable to manufacturers, and the other is to evaluate the quality of image and sound, which concerns the customer. The latter is a prior