1、BRITISH STANDARD BS EN 60315-7:1996 BS 4054-7: 1996 IEC 315-7: 1995 Methods of Measurement on radio receivers for various classes of emission Part 7: Methods of measurement on digital satellite radio (DSR) receivers The European Standard EN 60315-7:1995 has the status of a British Standard ICS 33.06
2、0.30BSEN60315-7:1996 This British Standard, having been prepared under the directionof the Electrotechnical Sector Board, was published underthe authority of the Standards Board and comesintoeffect on 15 June1996 BSI 08-1999 The following BSI references relate to the work on this standard: Committee
3、 reference EPL/100/1 Draft for comment 91/03151 DC ISBN 0 058 25644 8 Committees responsible for this British Standard The preparation of this British Standard was entrusted by Technical Committee EPL/100, Audio, video and multimedia systems and equipment, to Subcommittee EPL/100/1, Receiving equipm
4、ent, upon which the following bodies were represented: British Broadcasting Corporation British Educational Suppliers Association British Radio and Electronic Equipment Manufacturers Association British Telecommunications plc Institution of Electrical Engineers International Consumer Electronics Ass
5、ociation Radio, Electrical and Television Retailers Association Radiocommunications Agency Amendments issued since publication Amd. No. Date CommentsBSEN60315-7:1996 BSI 08-1999 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN 60315-7 5 List of ref
6、erences Inside back coverBSEN60315-7:1996 ii BSI 08-1999 National foreword This British Standard has been prepared by Subcommittee EPL/100/1 and is theEnglish language version of EN 60315-7:1995 Methods of measurement onradio receivers for various classes of emission. Part7: Methods of measurementon
7、digital satellite radio (DSR) receivers, published by the European Committee for Electrotechnical Standardization (CENELEC). It is identical with IEC315-7:1995, including corrigendum: 1995, published by theInternational Electrotechnical Commission (IEC), and forms Part7 of a multi-Part standard on m
8、easurement methods on radio receivers. This Part defines conditions and methods for determining the characteristics of a DSR tuner/receiver unit to facilitate comparison of measurements made using various methods. Performance requirements are not specified. Additional information. The following CENE
9、LEC editorial change has been incorporated: inFigure 11, “See Figure 7b” has been replaced by “SeeFigure 12”. 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
10、 Standard does not of itself confer immunity from legal obligations. Cross-references Publication referred to Corresponding British Standard HD 483.3 S2:1992 (IEC 268-3:1988) BS 6840 Sound system equipment Part 3:1992 Methods for specifying and measuring the characteristics of sound system amplifier
11、s HD 483.15 S4:1992 (IEC 268-15:1987) Part 15:1992 Specification for matching values for the interconnection of sound system components HD 560.1 S1:1990 (IEC 315-1:1988) BS 4054 Methods of measuring and expressing the performance of radio receivers for sound broadcasting Part 1:1995 General consider
12、ations and methods of measurement, including audio-frequency measurements EN 60651:1994 (IEC 651:1979) BS EN 60651:1994 Specification for sound level meters EN 60958:1990 (IEC 958:1989) BS EN 60958:1995 Specification for digital audio interface Summary of pages This document comprises a front cover,
13、 an inside front cover, pagesi andii, theEN title page, pages2 to32, 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 EU
14、ROPENNE EUROPISCHE NORM EN60315-7 July1995 ICS33.060.30 Descriptors: Telecommunications, radiocommunications, sound broadcasting, satellite broadcasting, digital technics, receivers, measurements, characteristics English version Methods of measurement on radio receivers for various classes of emissi
15、on Part 7: Methods of measurement on digital satellite radio(DSR) receivers (IEC 315-7:1995) Mthodes de mesure applicables aux rcepteurs radiolectriques pour diverses classes dmission Partie 7: Mthodes de mesure pour les rcepteurs de radiodiffusion sonore numrique par satellite (DSR) (CEI 315-7:1995
16、) Meverfahren fr Funkempfnger fr verschiedene Sendearten Teil 7: Meverfahren fr Empfnger fr digitale Satelliten-Tonrundfunksendungen (DSR) (IEC 315-7:1995) This European Standard was approved by CENELEC on1995-07-04. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which
17、 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 be obtained on application to the Central Secretariat or to any CENELEC member. This European S
18、tandard 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 the Central Secretariat has the same status as the official versions. CENELEC members are the na
19、tional electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normal
20、isation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1995 Copyright reserved to CENELEC members Ref. No. EN60315-7:1995 EEN60315-7:1995 BSI 08-1999 2 Foreword The text of document 12A/378/DIS, future edition1 of IEC315-7,
21、prepared by SC12A, Receiving equipment, of IEC TC12, Radiocommunications, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN60315-7 on1995-07-04. The following dates were fixed: Annexes designated “normative” are part of the body of the standard. Annexes designated “inf
22、ormative” are given for information only. In this standard,Annex ZA is normative and Annex A is informative. Annex ZA has been added by CENELEC. Contents Page Foreword 2 Section 1. General 5 1.1 Scope and object 5 1.2 Normative references 5 Section 2. General explanation of terms 5 2.1 DSR tuner/rec
23、eiver unit 5 2.2 Radio frequencies for measurements 5 2.3 Carrier frequency 6 2.4 4-PSK (QPSK) modulation 6 2.5 Rated values 6 Section 3. General notes on measurements 6 3.1 Preliminary measurements 6 3.2 General conditions 6 3.3 Test signals 6 3.4 Measuring instruments 7 3.5 Measuring conditions 8
24、Section 4. Methods of measurement based on analogue modulation signals 9 4.1 Overall total harmonic distortion plus noise as a function of output voltage,modulation frequency and dynamic range 9 4.2 Intermodulation distortion 10 4.3 Intermodulation with the sampling signal 10 4.4 Overall audio-frequ
25、ency response 11 4.5 Maximum audio output level 11 4.6 Overall interchannel gain difference including its variation with the volume control setting 11 4.7 Overall interchannel phase difference 12 4.8 Crosstalk attenuation 12 Section 5. Methods of measurements based on error ratios 13 5.1 General 13
26、5.2 Bit errors/bit error ratio due to noise in the RF input signal 13 5.3 Residual audio-signal errors (clicks) due to noise in the RF input signal 14 5.4 Change of bit error ratio and/or of residual error rate due to RF signal level change 15 5.5 Usable RF input signal level range 15 latest date by
27、 which the ENhas to be implemented at national level by publication of an identical national standard or by endorsement (dop)1996-04-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow)1996-04-01EN60315-7:1995 BSI 08-1999 3 Page 5.6 Change of bit error ra
28、tio and/or of residual error rate due to carrier frequency offset 16 5.7 Usable RF centre-frequency range 17 5.8 Error ratios due to an interference modulation of the carrier 17 5.9 Immunity against interfering radio-frequency signals 18 Section 6. Methods of measurement based on the display of addi
29、tional information 19 6.1 General 19 6.2 Assessment criteria 20 6.3 Response of display in relation to the carrier-to-noise ratio 20 6.4 Response of display due to interfering radio-frequency signals 20 Annex A (informative) System information Informative references 31 Annex ZA (normative) Normative
30、 references to international publications withtheir corresponding European publications 32 Figure 1 Circuit arrangement for variousmeasurements 21 Figure 2 Frequency response limits of audioband-pass filter 22,4 Hz to 15 kHz 22 Figure 3 Total harmonic distortion plus noise as a function of the utili
31、zation factor 22 Figure 4 Total harmonic distortion plus noise as a function of audio signal frequency (at 90 % utilization) 23 Figure 5 Distortion limited output power as a function of modulation frequency 23 Figure 6 Frequency spectrum of the measurement for intermodulation distortion.Parameters:
32、Audio signals 24 Figure 7 Overall audio-frequency response 25 Figure 8 Circuit arrangement for bit errormeasurements 25 Figure 9 Block diagram (example) and clock timing of BER measurement interface;transmitter side 26 Figure 10 Block diagram (example) and timing of BER measurement interface; receiv
33、er side 26 Figure 11 Circuit arrangement for themeasurement of audio-signal clicks 27 Page Figure 12 Interface (example) for themeasurement of residual errors 27 Figure 13 Bit error ratio (BER) as a function of carrier-to-noise ratio (C/N) 28 Figure 14 Residual error rate as a functionofcarrier-to-n
34、oise ratio (C/N) 28 Figure 15 Bit error ratio (BER) as a function of the input signal level 29 Figure 16 Bit error ratio (BER) as a function of the carrier frequency deviation; H: hold range, C: capture range 29 Figure 17 Permissible interference signal level as a function of the interfering signal
35、frequency 304 blankEN60315-7:1995 BSI 08-1999 5 Section 1. General 1.1 Scope and object This part of IEC 315 applies to the DSR tuner/receiver unit of a receiving installation for the direct reception of digital satellite sound broadcast transmissions in the12 GHz band. The channels are identical to
36、 those defined by WARC BS-77 and RARC SAT-83 for television broadcasting. The DSR system is recommended in CCIR 1)Recommendation712 for the transmission of very high-quality sound programmes to fixed receivers within a wide coverage area in Region1. The object of this standard is to define the condi
37、tions and methods of measurement to be used to determine the characteristics of a DSR tuner unit, so as to make possible the comparison of results of measurements achieved by different observers. Performance requirements (limiting values for the characteristics, required for acceptable performance)
38、are not specified. NOTE1The tuner unit comprises a channel selector and a demodulator/decoder for the reception of digitally coded and phase-modulated satellite sound broadcast transmissions. The unit may additionally comprise a fixed frequency input. NOTE2For more information about the system, seeA
39、nnex A. 1.2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions in this part of IEC315. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to ag
40、reements based on this part of IEC315 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. IEC 268-3:1988, Sound system equipment Part3: Amp
41、lifiers. IEC 268-15:1987, Sound system equipment Part 15: Preferred matching values for the interconnection of sound system components. IEC 315-1:1988, Methods of measurement on radio receivers for various classes of emission Part1:General considerations and methods of measurement, including audio-f
42、requency measurements. IEC 651:1979, Sound level meters. IEC 958:1989, Digital audio interface. ITU-R Recommendation BS 468-4:1990, Measurement of audio-frequency noise voltage level in sound broadcasting (Vol. X-1). Section 2. General explanation of terms For the purpose of this part of IEC315 the
43、following definitions apply. 2.1 DSR tuner/receiver unit The function of this unit is to select a desired channel from a group of signals received and converted toafirst intermediate frequency by the outdoor unit and possibly to a second intermediate frequency, forexample in cable distribution syste
44、ms, and to provide analogue and/or digital audio outputs. This unit isable to select a specific sound channel from a group of time multiplexed sound channels transmitted with4-PSK (QPSK) modulation according to the DSR standard. For this purpose the unit includes an RF filter module followed by a de
45、modulator, decoder and digital-analogue converter. The exact configuration of the unit depends on overall product design and the transmission standards that the equipment is designed to receive (seeAnnex A). 2.2 Radio frequencies for measurements DSR receivers may provide inputs for the first and/or
46、 second intermediate frequency, or they may have a switchable input. Receivers designed for several frequency ranges shall be measured in each of these frequency ranges. 1) CCIR is replaced by ITU-R.EN60315-7:1995 6 BSI 08-1999 2.3 Carrier frequency The carrier frequency is the centre frequency of t
47、he spectrum of the modulated radio-frequency input signal, which is equal to the frequency of the unmodulated signal. 2.4 4-PSK (QPSK) modulation For this system the phase steps of the4-PSK modulation are defined as n 90 (for n =0to3) i.e. the modulation is a QPSK modulation. NOTE4-PSK means four-ph
48、ase phase-shift keying. QPSK means quadrature phase-shift keying. 2.5 Rated values In this standard, the term rated value is used as specified in IEC315-1. Section 3. General notes on measurements 3.1 Preliminary measurements As the results of various measurements described in this standard may be i
49、nfluenced by other properties of the receiver, the related measurements given in IEC315-1 should usually be carried out first. 3.2 General conditions With respect to accuracy of measurement equipment, environment conditions, presentation of results and deviation from the recommended methods of measurements, reference is made to IEC315-1. Accuracy of measurements may be influenced by radio interference. In this case, measurements shall be carried out in a screened room. 3.3 Test signals 3.3.1 Standard rad
