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1、BRITISH STANDARD BS EN 60244-10:1993 IEC 244-10: 1986 Methods of measurement for radio transmitters Part 10: Methods of measurement for television transmitters and transposers employing insertion test signals The European Standard EN 60244-10:1993 has the status of a British Standard UDC 621.397.6:6
2、21.317 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 09:08:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 60244-10:1993 This British Standard, having been prepared under the direction of the Electronic Equipment Standards Policy Committee, was published under the authority of the Stand
3、ards Board and comes into effect on 15 December 1993 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference EEL/25 Special announcement in BSI News September 1993 ISBN 0 580 22730 8 Cooperating organizations The European Committee for Electrotechnical Stand
4、ardization (CENELEC), under whose supervision this European Standard was prepared, comprises the national committees of the following countries: AustriaItaly BelgiumLuxembourg DenmarkNetherlands FinlandNorway FrancePortugal GermanySpain GreeceSweden IcelandSwitzerland IrelandUnited Kingdom Amendment
5、s issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 09:08:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 60244-10:1993 BSI 12-1999i Contents Page Cooperating organizationsInside front cover National forewordii Foreword2 Text of EN 60244-105 Nat
6、ional annex NA (informative) Committees responsibleInside back cover Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 09:08:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 60244-10:1993 ii BSI 12-1999 National foreword This Part of BS EN 60244 has been prepared under the direction of the E
7、lectronic Equipment Standards Policy Committee and is the English language version of EN 602044-10:1993, Methods of measurement for radio transmitters. Part 10: Methods of measurement for television transmitters and transposers employing insertion test signals, published by the European Committee fo
8、r Electrotechnical Standardization (CENELEC). It is identical to IEC 244-10:1986, published by the International Electrotechnical Commission (IEC) and is part of a multi-part series describing recommended methods of measurement for assessing the performance of radio transmitters. This Part of BS EN
9、60244 covers the application of insertion test signal measurement to television transmitters and transposers operating in accordance with television systems for monochrome and colour transmission employing 625 or 525 lines. It may also be used as an alternative means for performing some of the line
10、time measurements described in EN 60244-51) or EN 60244-91). It is anticipated that the other Parts of IEC Publication 244 will be published as identical British Standards, subject to their harmonization by CENELEC. For ease of publication, some of the figures also include the French text A British
11、Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front co
12、ver, an inside front cover, pages i and ii, the EN title page, pages 2 to 42, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. 1) In preparatio
13、n. It is envisaged that identical British Standards, designated BS EN 60244-5 and BS EN 60244-9, will be published in due course. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 09:08:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60244-10 A
14、pril 1993 UDC 621.397.6:621.317Supersedes HD 236.10 S1:1988 Descriptors: Radio transmitters, television, insertion signals, measurements, requirements English version Methods of measurement for radio transmitters Part 10: Methods of measurement for television transmitters and transposers employing i
15、nsertion test signals (IEC 244-10:1986) Mthodes de mesure applicables aux metteurs radiolectriques Dixime partie: Mthodes de mesure applicables aux metteurs et rmetteurs de tlvision, et utilisant les signaux dinsertion (CEI 244-10:1986) Meverfahren fr Funksender Teil 10: Meverfahren fr Fernsehsender
16、 und-umsetzer mit Prfzeilensignalen (IEC 244-10:1986) This European Standard was approved by CENELEC on 1993-03-09. 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
17、 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 three official versions (English, French, German). A version in any other language
18、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 electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Ic
19、eland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue d
20、e Stassart 35, B-1050 Brussels 1993 Copyright reserved to CENELEC members Ref. No. EN 60244-10:1993 E Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 09:08:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 60244-10:1993 2 BSI 12-1999 Foreword At the request of 72nd Technical Board, HD 236.10 S
21、1:1988 (IEC 244-10:1986) was submitted to the CENELEC voting procedure for conversion into a European Standard. The text of the International Standard was approved by CENELEC as EN 60244-10 on 9 March 1993. The following dates were fixed: Annexes designated “normative” are part of the body of the st
22、andard. In this standard, Annex ZA is normative. latest date of publication of an identical national standard(dop) 1994-06-01 latest date of withdrawal of conflicting national standards(dow) Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 09:08:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN
23、 60244-10:1993 BSI 12-19993 Contents Page Foreword2 Introduction5 1Scope5 2Object5 Section 1. Test signals and line selection 3Introduction5 4Insertion test signals6 5Line selection6 6Content of the active picture period6 Section 2. General conditions of measurement and initial adjustment of the equ
24、ipment 7Manual and automatic methods of measurement6 8Measuring arrangement7 9Conditions of operation7 10Adjustment of the VSB demodulator7 Section 3. Measurement of performance characteristics 11Conformity with other standards8 12Luminance bar amplitude error8 13Synchronizing pulse amplitude error9
25、 14Luminance bar tilt9 15Base-line distortion10 162T pulse/bar ratio error10 172T pulse shape distortion10 18Amplitude/video-frequency characteristic11 19Chrominance-luminance gain inequality11 20Chrominance-luminance delay inequality12 21Luminance non-linearity12 22Chrominance non-linearity13 23Dif
26、ferential gain13 24Differential phase14 25Chrominance-luminance cross-talk14 26Random noise at blanking level15 27In-band intermodulation15 Appendix A CCIR Recommendation 473-323 Annex I 625-Line systems24 Annex II 525-Line systems30 Appendix B Excerpt of CCIR Recommendation 567-136 Appendix C List
27、of references to Reports and Recommendations of the CCIR39 Page Annex ZA (normative) Other international publications quoted in this standard with the references of the relevant European publications41 Bibliography16 Figure 1 Test signal I for 625-line systems17 Figure 2 Test signal II for 625-line
28、systems17 Figure 3 Test signal III for 625-line systems18 Figure 4 Test signal IV for 625-line systems18 Figure 5 Test signal V for 525-line systems19 Figure 6 Test signal VI for 525-line systems19 Figure 7 Test signal VII for 625-line systems20 Figure 8 Test signal VIII for 625-line systems20 Figur
29、e 9 Example of test arrangement21 Figure 10 Example of oscilloscope graticule for the measurement of 2T pulse shape distortion22 Figure 11 Chrominance-luminance delay inequality22 Figure A.1 Line 1725 Figure A.2 Line 1827 Figure A.3 Line 33028 Figure A.4 Line 33129 Figure A.5 Line 17 of Field 133 Fi
30、gure A.6 Line 17 of Field 234 Figure A.7 Line 17 of Field 134 Figure A.8 Line 17 of Field 235 Figure B.1 Low-pass filter diagram36 Figure B.2 Low-pass filter characteristic37 Figure B.3 Network diagram37 Figure B.4 Unified weighting characteristics38 Figure B.5 Thomson filter diagram39 Table I Chara
31、cteristics of the video signals at the transmitter input and demodulator output for different television standards5 Table I26 Table II30 Table III32 Table IV33 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 09:08:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 blank Licensed Copy: sheffieldu
32、n sheffieldun, na, Sat Nov 11 09:08:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 60244-10:1993 BSI 12-19995 Introduction This standard is one of a series of parts of IEC Publication 244: Methods of Measurement for Radio Transmitters, describing recommended methods of measurement for assessing th
33、e performance of radio transmitters. In this standard reference is made to other parts of IEC Publication 244, especially Publication 244-5:Part 5: Measurements Particular to Transmitters and Transposers for Monochrome and Colour Television, and Publication 244-9:Part 9: Transposers for Monochrome a
34、nd Colour Television. 1 Scope This standard applies to television transmitters and transposers operating in accordance with television systems for monochrome and colour transmission employing 625 or 525 lines as described in CCIR publications. For details of the characteristics of the various system
35、s, see the CCIR Report 1 mentioned in Appendix C. 2 Object This standard deals with the application of insertion test signal measurement to television transmitters and transposers. This method of measurement is useful for checking the line time performance of the transmitters or transposers during p
36、rogramme service and provides a convenient method of testing transmission performance stability during acceptance tests. It may also be used as an alternative means of carrying out some of the line time measurements as described in IEC Publication 244-5 or 244-9 (including supplements). Section 1. T
37、est signals and line selection 3 Introduction Test signals inserted on selected lines in the field-blanking interval of the composite video signal are termed “insertion test signals” and may be inserted by an appropriate instrument, for example an insertion test signal generator. Table I Characteris
38、tics of the video signals at the transmitter input and demodulator output for different television standards 625-line systems525-line systems Un = 700 mV Us = 300 mVa Un = 714 mV Us = 286 mVa B, G, H, K1D, KILM, N 1 (%)1012.5 or 152010010 2 (%)b7575763075 U0 (mV)808840 or 875950300824 Un0 (mV)c70070
39、0700700714 Us0 (mV)269280 or 292300300275 a Characteristics of the video signal at the input of the (test) transmitter Un = nominal value of the luminance bar amplitude, Us = nominal value of the synchronizing pulse amplitude. b Characteristics of the vision signal at the output of the transmitter (
40、or transposer) 1 = nominal peak white level in percentage of peak carrier*, 2 = nominal blanking level in percentage of peak carrier*. *In accordance with the CCIR Report 1 mentioned in Appendix C; for System L, without taking into account the chrominance sub-carrier. c Characteristics of the video
41、signal at the output of the demodulator Un0 = nominal value of the luminance bar amplitude, i.e. the voltage between blanking level and nominal white reference level, U0 = the value to which the voltage between zero-carrier and blanking level is to be adjusted, so that Un0 = Un, Us0 = nominal value
42、of the synchronizing pulse amplitude, i.e. the voltage between blanking level and nominal synchronizing level. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 11 09:08:37 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 60244-10:1993 6 BSI 12-1999 4 Insertion test signals A representative range of
43、insertion test signals is shown in Figure 1 to Figure 8. For ease of reference they are indicated by roman numerals. The test signals I to IV for 625-line systems are given in Figure 1 to Figure 4, pages 17 and 18. Figure 5 and Figure 6, page 19, show the test signals V and VI for 525-line systems.
44、The test signals I to VI are based on the CCIR Recommendation reproduced in Appendix A, to which reference should be made for further details. The test signals VII and VIII are included for the measurement of certain characteristics not included in the CCIR Recommendation. Test signal VII, shown in
45、Figure 7, page 20, is used for measuring the in-band intermodulation products caused by intermodulation between the vision and sound carriers and the sideband component corresponding to the chrominance subcarrier in 625-line equipment, particularly for transmitters and transposers employing common a
46、mplification of the vision and sound channels. A similar test signal may be used for testing 525-line equipment. Test signal VIII, shown in Figure 8, page 20, comprising a signal at blanking level for the full line interval, is used for measuring noise in 625-line equipment. A similar test signal ma
47、y be used for testing 525-line equipment. 5 Line selection For out-of-programme service tests, the test signals may be, in principle, inserted in any line in the field-blanking interval. For tests during programme service, the lines selected for the test signals should be in accordance with relevant
48、 CCIR Recommendations and Reports (see Appendix C, reference 4). 6 Content of the active picture period It is assumed that all insertion test signals are simultaneously present on the selected lines of the field-blanking interval. Because the measurement result may depend on the picture content of t
49、he other lines, the average signal level during in-programme measurements shall be stated in the presentation of results. Out-of-programme measurements may be made for different values of average picture level with the luminance level of the active picture lines successively adjusted to correspond to an “all-black picture” and an “all-white picture”, and, if required, also to a “mid-grey picture”. This shall also be stated in the presentation of results. Section 2. General conditions of