1、STD=BSI BS EN 60107-5-ENGL 1999 Lb24bb9 0839534 030 m BRITISH STANDARD Recommended methods of measurement on receivers for television broadcast transmissions - Part 5: Electrical measurements on multichannel sound television receivers using the NICAM two-channel digital sound-system The European Sta
2、ndard EN 60107-5:1992, with the incorporation of amendment A1:1999, has the status of a British Standard ICs 33.160.25 BS EN 60107-5:1999 IEC 60107-5: 1992 Incorporating Amendment No. 1 nn( I n-m U- NO COPYING WITHOUT BSI PEBMISSION EXCEPT AS PERMilTED BY COPYRIGHT LAW STDmBSI ES EN b0107-5-ENGL 399
3、9 = 3624669 0839535 777 Amd. No. 10595 BS EN 60107-5:1999 Date Comments April 2000 See national foreword National foreword This British Standard is the English language version of EN 60107-5:1992, including amendment A1:1999. It is identical with IEC 60107-51992, including amendment 1: 1999. The UK
4、participation in its preparation was entrusted by Technical Committee EPW100, Audio, video and multimedia systems and equipment, to Subcommittee EPU10011, Receiving equipment, which has the responsibility to: - aid enquirers to understand the text; - present to the responsible internationallEuropean
5、 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 the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary.
6、The start and finish of text introduced or altered by amendment is indicated in the text by tags B m. Tags indicating changes to IEC text carry the number of the IEC amendment. For example, text altered by IEC amendment 1 is indicated by $ . From 1 January 1997, all IEC publications have the number
7、60000 added to the old number. For instance, 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 Attention is drawn to the fact that CEN and CENELEC s
8、tandards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled
9、“International Standards Correspondence Index”, or by using the “Find facility of the BSI Standards Electronic Catalogue. 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 wi
10、th a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 15 and a back cover. The BSI copyrght notice displayed in this document indicates when the doc
11、ument was last issued. This British Standard, having been prepared under the direction of the Electrotechnical Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 February 1999 8 BSI 04-2000 ISBN O 580 32110 X Amendments issued since publication
12、 STD=BSI BS EN bOL07-5-ENGL L999 = Lb24bb9 063953b 903 H EUROPEAN STANDARD EN 60107-5 NORME EUROPENNE October 1992 EUROPAISCHE NORM +Al April 1999 ICs 33.160.20 UDC 621.397.13:621.317 Descriptors: Radiocommunications, television broadcasting, television systems, television receivers, measurement, el
13、ectric measirements English version Recommended methods of measurement on receivers for television broadcast transmissions Part 5: Electrical measurements on multichannel sound television receivers using the NICAM two-channel digital sound- sys tem (includes amendment A1:1999) (IEC 60107-51992 + A1:
14、1999) Mthodes recommandes pour les mesures sur les rcepteurs de tlvision Partie 5: Mesures lectriques sur les rcepteurs de tlvision plusieurs voies son utilisant le systme deux voies son numrique NICAM (inclut lamendement Al: 1999) Zweikanal-Digitaltonverfahren (CE1 60107-5:1992 + A11999) Empfohlene
15、 Meverfahren an Empfngern fr Fernsehrundfunksendungen Teil 5: Elektrische Meverfahren an Fernseh-Rundfunkempfngern fr Mehrkanalton nach dem NICAM (enthlt nderung Al:1999) (IEC 60107-5:1992 + A111999) This European Standard was approved by CENELEC on 1991-12-10, amendment Al was approved by CENELEC o
16、n 1999-04-01. CENELEC members are bound to comply with the CENICENELEC 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 ma
17、y 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 made by translation under the responsibility of a CENELEC member into its own language and notified to
18、 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, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and Unite
19、d Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fim Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels O 1992 Copyright reserved to CENELEC members Ref. No. EN 60107-51992 +
20、 A1:1999 E STD-BSI BS EN 60L07-5-ENGL L999 3624669 0839537 84T EN 60107-5:1992 Foreword The text of document 12A (C.O.) 150, as prepared by Sub-committee 12A Receiving equipment, of IEC Technical Committee No. 12: Radiocommunications was submitted to the IEC-CENELEC parallel vote in May 1991. The re
21、ference document was approved by CENELEC as EN 60107-5 on 10 December 1991. The following dates were fured: - latest date of publication of an identical national - latest date of withdrawal of conflicting national standard (dop) 1993-08-15 standards (dow) 1993-08-15 Annexes designated “normative” ar
22、e part of the body of the standard. In this standard, Annex ZA is normative. Endorsement notice The text of the International Standard IEC 60107-5:1992 was approved by CENELEC as a European Standard without any modification. Foreword to amendment Al The text of document 100A/113/FDIS, future amendme
23、nt 1 to IEC 60107-5, prepared by SC 100A, Multimedia end-user equipment, of IEC TC 100, Audio, video and multimedia systems and equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as amendment Al to EN 60107-5:1992 on 1999-04-01. The following dates were fured: - la
24、test date by which the amendment has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2000-01-01 - latest date by which the national standards conflicting with the amendment have to be withdrawn (dow) 2002-01-01 Annexes designated “normativ
25、e” are part of the body of the standard. In this standard, annex ZA is normative. Annex ZA has been added by CENELEC. Endorsement notice The text of amendment 1:1999 to the International Standard IEC 60107-51992 was approved by CENELEC as an amendment to the European Standard without any modificatio
26、n. Contents Foreword i Introduction 2 General explanation of terms 3 General notes on measurements 4 Methods of measurements Annex ZA Figure 1 - RF test generator including digital signal Figure 2 - Receiver Figure 3 - Arrangement for bit error rate measurements Figure 4 - Arrangement for bit error
27、rate measurements with adjacent channel Figure 5 - Arrangement for signal-to-noise measurements Figure 6 - Arrangement for dynamic range, audio frequency characteristic, harmonic distortion and crosstalk measurements Figure 7 - Arrangement for the measurement of the phase difference between left and
28、 right channels Figure 8 - Filter characteristic for adjacent TV channel (system B) Figure 9 - Test signal amplitude at audio input Page 2 3 3 3 4 15 8 9 10 10 11 12 12 13 14 2 Q BSI 04-2000 STD-BSI BS EN bOL07-5-ENGL 1999 I Lb24669 0839538 786 EN 60107-5:1992 1 Introduction 1.1 Scope The methods of
29、 measurement described in this part of IEC 60107 apply to television receivers designed for the reception of television broadcasts using the two-channel digital sound system. The sound coding-system is based on NICAM 728 and is transmitted by a quadrature phase-shift keying (QPSK) modulated digital
30、subcarrier. NOTE NiCAM 728 is the abbreviated form of Near Instantaneous Companded Audio Multiplex at 728 kbis. 1.2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC 60107. At the time of publica
31、tion, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this part of IEC 60107 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. Members of IEC and IS0 ma
32、intain registers of currently valid International Standards. E9 IEC 60107-1: 1997, Methods of measurement on receivers for television broadcast transmissions - Part 1: General considerations - Measurements at radio and video frequencies. IEC 60107-2:1997, Methods of measurement on receivers for tele
33、vision broadcast transmissions - Part 2: Audio channels - General methods and methods for monophonic channels l. IEC 268-1:1985, Sound system equipment - Part 1: General. ITU-R Recommendation BT.470-51998, Conventional television systems. ITU-R Recommendation 707-3:1998, Transmission of multi-sound
34、in terrestrial television systems PAL B, G, H and I, and SECAM O, K, KI and L. ITU-T Recommendation J. 17: 1972, Pre-emphasis used on sound-programme circuits l. 2 General explanation of terms The digital sound system offers the possibility of audio transmission using several different modes of oper
35、ation: Dual sound: Stereophonic: Monoaural: transmission of monoaural signal. transmission of two independent sound signals. transmission of a left and right channel sound signal. 3 General notes on measurements The decoder for this sound system is generally integrated into a television receiver and
36、 it is not always possible to measure the data before the DA converter. 3.1 General conditions Unless otherwise stated, measurements shall be carried out under the conditions described in IEC 60107-1 and IEC 60107-2. 3.2 Setting of the receiver 3.2.1 Introduction Measurements should be carried out i
37、n accordance with the following conditions to ensure measurement reliability. E3 3.2.2 Standard output power and voltage 3.2.2.1 Standard output power for loudspeaker The standard output power shall be a power 10 dB below the rated output power (see 3.1 of IEC 60107-2). Alternatively, a stated, pref
38、erred value of output power, not directly related to the rated value, may be used; the preferred values are 500 mW, 50 mW and 5 mW. The corresponding levels are 27 dB(mW), 17 dB(mW) and 7 dB(mW), respectively. In all cases, the value chosen shall be stated with the results. 3.2.2.2 Standard line out
39、put voltage The standard output voltage at a line output terminal shall be 500 mV r.m.s. at 1 kHz when terminated with a resistor equal to the rated load impedance. NOTE If the output is not adjustable, the output voltage when the standard r.f. television signal is applied to the receiver at the r.f
40、. input signal level specified in 3.2.6, should be used as the standard output voltage. O BSI 04-2000 3 3.2.3 Setting of tone controls Unless otherwise stated, the tone controls that have an influence on the frequency characteristics shall be adjusted for a practically flat response characteristic a
41、t the volume control position specified for the measurement. If the volume control is physiologically weighted (loudness control) and the compensation cannot be switched off, it shall be set for minimum compensation effect and the B standard d output power obtained by adjusting the audio input level
42、 and this value stated with the results. 3.2.4 Setting of stereo balance control Unless otherwise specified, the balance control(s) shall be adjusted so that the output powers of the two channels are of the same value at the volume control position specified for measurement. 3.2.5 Receiver tuning Tu
43、ning shall be done in accordance with B 3.6.3 of IEC 60107-1 d and shall remain unaltered during the whole series of measurements. The criteria used according to B 3.6.3 of IEC 60107-1 stated. 3.2.6 Radio frequency signals Unless otherwise stated, a standardized colour TV signal (ITU-R Recommendatio
44、n BT.470-5) with two-channel digital sound system (ITU-R Recommendation BS.707-3) d and a colour bar video modulation shall be used. The r.f. input level of the receiver (the r.m.s. value of the picture carrier during the sync pulse interval) shall be set at 70 dB UV) across 75 a. The amplitude of t
45、he residual carrier at peak white level shall be between 10 % and 12,5 % of the picture carrier amplitude. The FM carrier shall be modulated with an audio frequency sine wave signal of 1 kHz, and a modulation factor of 30 %. A representation of the complete r.f. signal generator including the digita
46、l sound signal and the arrangement for measuring the r.f. signal levels, is shown in Figure 1. A representation of a basic NICAM receiver is shown in Figure 2. 3.3 Test signals 3.3.1 Audio test signals The audio test signals necessary to perform the test described in this document are defined as fol
47、lows: Frequencies: 40 Hz to 15 kHz. If the test generator only provides a given number of discrete frequencies they should be: 40 Hz, 100 Hz, 200 Hz, 500 Hz and 1 kHz, 2 kHz, 5 kHz, 7,5 kHz, 10 kHz, 12 kHz, 14 kHz. shall be Amplitude: The test signal applied to the NICAM coder shall be corrected in
48、accordance with the pre-emphasis B (ITU-T Recommendation J. 17) d, see Figure 9. All amplitudes of the test signals are referred to full scale. Full scale is defined, for a digital signal, as the maximum signal in accordance with the encoding system specification. Full scale amplitude is defined aft
49、er pre-emphasis and is the same for all frequencies after encoding. 3.3.2 Data test signal The data test signal is a pseudo random binary sequence (PRBS). The sequence shall have more than 15 stages. 3.4 Measuring instrument 3.4.1 R F test signal generator The test generator shall be capable of providing a radio frequency signal as specified in 3.2.6. The digital sound part of the test generator shall have separate data and clock inputs to the QPSK modulator. An example of the test generator is shown in Figure 1. 3.4.2 Audio signal generator The au
