1、BRITISH STANDARD BS EN 60244-5:1995 IEC 244-5: 1992 Methods of measurement for radio transmitters Part 5: Performance characteristics of television transmitters The European Standard EN60244-5:1994 has the status of a BritishStandard UDC 621.396.61.083621.397.13.001.11.001.2621.317.616.091.092.24621
2、.391.837.21BSEN60244-5:1995 This BritishStandard, having been prepared under the directionof the Electrotechnical Sector Board (L/1), was publishedunder the authority ofthe Standards Board and comesinto effect on 15June1995 BSI 01-2000 The following BSI references relate to the work on this standard
3、: Committee reference EPL/12 Special announcement in BSINews July1994 ISBN 0 580 24302 8 Committees responsible for this BritishStandard The preparation of this BritishStandard was entrusted to Technical Committee EPL/12, Radiocommunication, upon which the following bodies were represented: British
4、Broadcasting Corporation British Radio and Electronic Equipment Manufacturers Association British Telecommunications plc Institution of Electrical Engineers Radio, Electrical and Television Retailers Association Radiocommunications Agency Amendments issued since publication Amd. No. Date CommentsBSE
5、N60244-5:1995 BSI 01-2000 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN 60244-5 5 List of references Inside back coverBSEN60244-5:1995 ii BSI 01-2000 National foreword This BritishStandard has been prepared by Technical Committee EPL/12 and is t
6、he English language version of EN60244-5:1994 Methods of measurement for radio transmitters Part5: Performance characteristics of television transmitters, published by the European Committee for Electrotechnical Standardization (CENELEC). It is identical with IEC244-5:1992, published by the Internat
7、ional Electrotechnical Commission (IEC) and is part of a series describing the recommended methods of measurement for assessing the performance of radio transmitters. This Part of BS EN60244 describes the methods of measurement for assessing the performance characteristics of television transmitters
8、 and is intended to be used for type tests and acceptance or factory tests. For ease of reproduction, on some of the figures the French text has been retained. Other Parts of BS EN60244 published to date are as follows: Part10:1993, Methods of measurement for television transmitters and transposers
9、employing insertion test signals. Part11:1993, Transposers for FM sound broadcasting. Part12-1:1994, Guideline for drawing up descriptive leaflets for transmitters and transposers for sound and television broadcasting Section12.1 Characteristics to be specified. Part12-2:1994, Guideline for drawing
10、up descriptive leaflets for transmitters and transposers for sound and television broadcasting Section12.2 Specification sheets. Part13:1993, Performance characteristics for FM sound broadcasting. It is anticipated that other Parts of IEC Publication244 will be published as identical BritishStandard
11、s, subject to their harmonization by CENELEC. A British 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 obligati
12、ons. Cross-references Publication referred to Corresponding BritishStandard BS EN60244 Methods of measurement for radio transmitters EN60244-10:1993 (IEC244-10:1986) Part10:1993 Methods of measurement for television transmitters and transposers employing insertion test signals EN60244-12-1:1993 (IEC
13、244-12-1:1989) Part12 Guideline for drawing up descriptive leaflets for transmitters and transposers for sound and television broadcasting. Section12.1:1994 Characteristics to be specified EN60244-12-2:1993 (IEC60244-12-2:1989) Part12 Guideline for drawing up descriptive leaflets for transmitters an
14、d transposers for sound and television broadcasting Section12.2:1994 Specification sheets EN60244-13:1993 (IEC60244-13:1991) Part13 Performance characteristics for FM sound broadcasting Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theEN title page, pag
15、es2 to78, 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.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60244-5 May 1994 UDC 621.396.61.
16、083621.397.13.001.11.001.2 621.317.616.091.092.24621.391.837.21 SupersedesHD236.5S4:1979 Descriptors: Radio equipment, transmitter, television, operating characteristics, quality English version Methods of measurement for radio transmitters Part5: Performance characteristics of television transmitte
17、rs (IEC 244-5:1992) Mthodes de mesure applicables aux emtteurs radiolectriques Partie5: Qualits de fonctionnement des metteurs de tlvision (CEI244-5:1992) Meverfahren fr Funksender Teil5: Ubertragungseigenschaften von Fernsehsendern (IEC244-5:1992) This European Standard was approved by CENELEC on 1
18、993-12-08. 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 b
19、e 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 made by translation under the responsibility of a CENELEC member into its own language and notified to th
20、e 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, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKi
21、ngdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1994 Copyright reserved to CENELEC members Ref. No. EN60244-5:1994 EEN60244
22、-5:1994 BSI 01-2000 2 Foreword The CENELEC questionnaire procedure, performed for finding out whether or not the International Standard IEC244-5:1992 could be accepted without textual changes, has shown that no common modifications were necessary for acceptance as a European Standard. The reference
23、document was submitted to the CENELEC members for formal vote and was approved by CENELEC as EN60244-5 on8December1993. This European Standard replaces HD236.5S4:1979. The following dates were fixed: Annexes designated “normative” are part of the body of the standard. In this standard Annex A, Annex
24、 B and Annex ZA are normative. Corrigendum Editorial correction to the English version of IEC244-5: Under2.2, CCIR Publications, replace “CCIRRecommendation567-1:1986” by “CCIRRecommendation567-3:1990” (the title is unchanged). Contents Page Foreword 2 Introduction 5 1 Scope 5 2 Normative references
25、 5 2.1 IEC publications 5 2.2 CCIR publications 5 3 General terms and definitions 5 3.1 Television transmitter 5 3.2 Description of the television systems and other relevant information 5 3.3 Definitions of performance characteristics 5 3.4 Standard test signals 5 4 General conditions of operation 5
26、 5 General conditions of measurement 6 5.1 Input and output signal arrangements 6 5.2 Measuring equipment 6 5.3 Modulation and power conditions 6 5.4 General characteristics 6 6 Output power, power consumption and power factor 6 6.1 Definitions 6 6.2 Measuring arrangement 6 6.3 Test signal 6 6.4 Mea
27、suring procedure 6 6.5 Calculation and presentation of the results 7 7 The characteristic vision levels 7 7.1 Introduction 7 7.2 Setting the characteristic levels to nominal values 7 7.3 Performance of the white clipper 7 7.4 Stability of the reference levels and output power 8 8 Linear distortion 1
28、0 8.1 Introduction 10 8.2 Amplitude/radio-frequency characteristic 10 8.3 Amplitude/video-frequency Characteristic 11 8.4 Group-delay/radio-frequency characteristic 11 8.5 Group-delay/video-frequency characteristic 12 latest date of publication ofan identical national standard (dop)1994-12-01 latest
29、 date of withdrawal ofconflicting national standards (dow)1994-12-01EN60244-5:1994 BSI 01-2000 3 Page 9 Non-linear distortion 12 9.1 Introduction 12 9.2 Luminance non-linearity 12 9.3 Differential gain and phase 13 9.4 Chrominance non-linearity 14 9.5 Chrominance-luminance intermodulation or cross-t
30、alk 14 9.6 Incidental phase modulation 14 10 Waveform distortion 15 10.1 Introduction 15 10.2 2T-pulse distortion including the pulse-bar ratio 15 10.3 T-step or T-pulse distortion 16 10.4 Field-time bar tilt 16 10.5 Line-time bar tilt 17 10.6 Luminance bar tilt 17 10.7 Line synchronizing pulse dist
31、ortion 17 10.8 Field blanking interval distortion 18 10.9 Line tilt 18 10.10 Long-time signal distortion 18 10.11 Chrominance-luminance gain and delay inequality using a composite pulse 19 11 Unwanted modulation 19 11.1 Introduction 19 11.2 Random noise 19 11.3 Low frequency periodic noise 20 11.4 H
32、igh frequency periodic noise including intermodulation 21 11.5 Impulsive noise 21 12 Special measurements for data signals in the vision signal 22 12.1 Introduction 22 12.2 Eye height and eye width 22 12.3 Position of the penultimate clock run-in-bit 23 13 Method of measurement of the sound channel(
33、s) of a television transmitter 23 13.1 Introduction 23 13.2 Measuring arrangement 23 13.3 Method of measurement of the FM sound channel (single sound) 23 13.4 Method of measurement of the AM sound channel 23 13.5 Special measurement for two or more sound channels 23 Page Annex A (normative) 43 A.1 R
34、eferences to the IEV and Recommendations and Reports of the CCIR 43 A.2 Channels and frequencies allocated to television broadcasting copy 43 A.3 Characteristics of television systems 46 A.4 Filters for use in measurements 64 A.5 A low-pass Gaussian filter for eye height measurement (calibrated filt
35、er) 69 Annex B (normative) Test signals 70 Annex ZA (normative) Other international publications quoted in this standard with the references of the relevant European publications 78 Figure 1a Measurement arrangement for output power 25 Figures 1b and 1c Demodulator output signals 25 Figure 2a Measur
36、ing arrangement for setting white clipper and characteristic levels and for stability measurement 26 Figure 2b 26 Figure 2c 26 Figure 2d 26 Figure 2e 26 Figure 2f 26 Figure 2g 26 Figure 2h 27 Figure 2i Demodulator output signals 27 Figure 2j 27 Figure 2k 28 Figure 2l 28 Figure 3a Measuring arrangeme
37、nt for amplitude/frequency characteristics 28 Figure 3b Demodulator output 29 Figure 3c Demodulator output 29 Figure 3d Example of amplitude/radio-frequency characteristics with tolerances for system G 29 Figure 3e Example of amplitude/video-frequency characteristics with tolerances for system G 29
38、Figure 3f Measuring arrangement for group-delay/frequency characteristics 30 Figure 3g Demodulator output 30 Figure 3h Examples of group-delay graticule for systems L and G 31EN60244-5:1994 BSI 01-2000 4 Page Figure 3i Example of a graticule for RF group-delay characteristics for system G 31 Figure
39、4a Measuring arrangement for luminance non-linearity 31 Figure 4b Differentiated demodulator output 32 Figure 4c Measuring arrangement for differential gain and phase 32 Figure 4d Picture for amplitude (A) and phase (:) 32 Figure 4e Measuring arrangement for chrominance/luminance intermodulation or
40、crosstalk 33 Figure 4f Filtered demodulator output 33 Figure 4g Measuring arrangement for incidental phase modulation 33 Figure 4h Demodulator output 34 Figure 4i Graticule 34 Figure 5a Measuring arrangement 34 Figure 5b Displayed pulse and bar signal 34 Figure 5c Graticule for distorsion measuremen
41、ts 34 Figure 5d Graticule for sine squared pulse 35 Figure 5e Displayed2 T/T pulse signal 35 Figure 5f Graticule for T step signal 35 Figure 5g Displayed T step signal 35 Figure 5h Displayed field time bar signal 35 Figure 5i Displayed line-time bar signal 35 Figure 5j Displayed luminance bar signal
42、 36 Figure 5k Displayed line synchronizing pulse signal 36 Figure 5l Displayed field-blanking interval signal 36 Figure 5m Displayed line tilt signal 36 Figure 5n Displayed black to white signal change shows ringing when employing low frequency sweep 36 Figure 5o Chrominance-luminance gain and delay
43、 inequality 37 Figure 5p 37 Figure 6a Measuring arrangement for signal-to-noise ratio 38 Figure 6b Measuring arrangement for intermodulation products and spurious single frequency components 38 Figure 6c Example of graticule for the display of high frequency periodic noise components and intermodula
44、ting products (B/G system) 39 Page Figure 6d 39 Figure 7a Eye-height and eye-width 39 Figure 7b Measuring for eye-height and eye-width 40 Figure 7c Transmitter output: demodulator with sound trap switched on (example of eye height and eye width graticule with synchronous detection) 40 Figure 8a Meas
45、uring arrangement for the sound channel of a television transmitter (single sound output) 41 Figure 8b Measuring arrangement for the sound channel of a television (multi-channel sound output) 42 Figure 1 Levels in the composite signal and details of line-synchronizing signals 48 Figure 2-1 Diagrams
46、applicable to all systems except M 50 Figure 2-2 Diagrams applicable to systems M 51 Figure 1 Low-pass filter diagram 48 Figure 2 Low-pass filter characteristic 65 Figure 3 High-pass filter diagram 65 Figure 4 High-pass filter characteristic 66 Figure 5 Network diagram 66 Figure 6 Unified weighting
47、characteristic 67 Figure 7 Non-constant resistance network diagram 68 Figure 8 Constant resistance network diagram 68 Figure 9 Transient response of the network 69 Figure 10 Gaussian filter 69 Figure 11 Amplitude and group delay characteristics 70 Table I Basic characteristics of video and synchroni
48、zing signals 46 Table I-1 Details of line synchronizing signals 49 Table I-2 Details of field synchronizing signals 52 Table II Characteristics of video signal for colour television 53 Table III Characteristics of the radiated signals (monochrome and colour) 61EN60244-5:1994 BSI 01-2000 5 Introducti
49、on This International Standard is one of a series of parts of IEC244. Some of the existing parts of IEC244 are currently under review and several of these will be revised or withdrawn. When this process is completed, this series of publications will comprise one part dealing with general characteristics, with cross-references to relevant CCIR publications and Radio Regulations (CCIR), and a number of specialized p
