1、BRITISH STANDARD BS EN 61603-612002 Transmission of audio and/or video and related signals using infra-red radiation Part 6: Video and audio-visual signals The European Standard EN 61603-6:2002 has the status ofa British Standard ICs 33.160.01; 33.040.40 British Standards NO COPYING WITHOUT BSI PERM
2、ISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 61603-612002 National foreword This British Standard is the official English language version of EN 61603-6:2002. It is identical with IEC 61603-6:2001. The UKparticipation in its preparation was entrusted to Technical Committee EPL/100, Audio, video
3、 and multimedia systems, which has the responsibility to: 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 Strategy Committee on 29 July 2002 - - aid enquirers t
4、o understand the text; present to the responsible international/European 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 repres
5、ented on this committee 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 instance, IEC 27-1 has been renumbered as IEC 60027-1. For a period oftime during the change over from one numbering system to the other,
6、publications may contain identifiers from both systems. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using
7、the “Search”faci1ity ofthe BSI Electronic Catalogue or ofBritish Stan dards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for their correct application. Compliance with a British Standard does not ofitself confer immunity from
8、legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 16, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publicatio
9、n Amd.No. I Date I Comments O BSI 29 July 2002 ISBN O 580 401 19 7 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61603-6 Februarv 2002 ICs 33.160.01 ;33.040.40 English version Transmission of audio and/or video and related signals using infra-red radiation Part 6: Video and audio-visual signa
10、ls (IEC 61 603-612001) Transmission de signaux audio et/ou video et de signaux similaires au moyen du rayonnement infrarouge Partie 6: Signaux vido et audiovisuels bertragung von Ton- und/oder Bi Ids ig na le n u n d verwand ten S ig na le n mit I nfrarot-Stra h I u ng Teil 6: Video- und audiovisuel
11、le Signale (CE1 61603-612001) (IEC 61603-612001) This European Standard was approved by CENELEC on 2001-12-01. CENELEC members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any a
12、lteration. 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 made b
13、y 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, Czech Republic, Denmark, Finland, France, Germany,
14、Greece, Iceland, Ireland, Italy, Luxembourg, Malta, 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 S
15、ecretariat: rue de Stassart 35, B - 1050 Brussels O 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61603-6:2002 E Page 2 EN 61603-62002 Foreword The text of document 100/295/FDIS, future edition 1 of IEC 61603-6, prepared by
16、 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 61603-6 on 2001-12-01. The following dates were fixed: - latest date by which the EN has to be implemented at national level by publication of an identical
17、 national standard or by endorsement - latest date by which the national standards conflicting with the EN have to be withdrawn Annexes designated “normative“ are part of the body of the standard. In this standard, annex ZA is normative. Annex ZA has been added by CENELEC. Endorsement not i ce (dop)
18、 2002-09-01 (dow) 2004-12-01 The text of the International Standard IEC 61603-6:2001 was approved by CENELEC as a European Standard without any modification. Page 3 EN 61603-62002 CONTENTS 1 2 3 4 5 6 7 8 9 10 Scope . . 4 Normative references 4 Definit ions . 4 Abbreviations . 4 Explanation of terms
19、 5 System considerations . 5 Characteristics to be specified and their methods of measurement 6 General conditions for measurements 6 Interface values, performance requirements and recommendations Marking and contents of specifications . Figure 1 - Transmission chain Figure 2 - Location for measu Fi
20、gure 3 - Transmitting distance Figure 5 - Radiant intensity of transmitter or radiator . Figure 6 - Irradiance of receiver . . 10 11 11 Figure 4 - Angle of maximum 11 12 Figure 7 - Characteristics of the transmitter . Figure 8 - Directivity characteristics of the transmitter . 12 Figure 9 - Characte
21、ristics of the receiver . 13 Figure 1 O - Directivity characteristics of the receiver Figure 12 - Transmission format (composite video signal) Figure 13 - Transmission format (Y/C separation video signal) Figure 14 - Pre-emphasis circuit (example) 15 Figure 11 - Measuring system for spurious emissio
22、n 14 Table 1 - Marking and contents of specifications 10 Annex ZA (normative) Normative references to international publications with their corresponding European publications 16 Page 4 EN 61603-62002 TRANSMISSION OF AUDIO AND/OR VIDEO AND RELATED SIGNALS USING INFRA-RED RADIATION - Part 6: Video an
23、d audio-visual signals 1 Scope IEC 61603-1 specifies general requirements and methods of measurement for equipment using infrared radiation as a carrier of information. This part of IEC 61603 specifies requirements and methods of measurement for analogue video transmission systems which are not cove
24、red by IEC 61603-1, nor by other standards. It allows systems which make different economic use of the available bandwidth to be described in order for conclusions regarding interference and compatibility to be drawn. NOTE For details of audio transmission systems, see IEC 61603-2 2 Normative refere
25、nces The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IEC 61603. For dated references, subsequent amend- ments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this pa
26、rt of IEC 61603 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of IEC and IS0 maintain registers of currently valid Intern
27、ational Standards. IEC 61 603-1, Transmission of audio and/or video and related signals using infra-red radiation - Part I: General IEC 61 603-2, Transmission of audio and/or video and related signals using infra-red radiation - Part 2: Transmission systems for audio wide band and related signals IE
28、C 61938, Audio, video and audiovisual systems - Interconnections and matching values - Preferred matching values of analogue signals 3 Definitions For the purposes of this part of IEC 61603, the definitions given in Part 1 apply. 4 Abbreviations IR infrared (see IEC 61603-1) IRED PD photo diode O/E
29、optical/electrical Tx transm itter/rad iator Rx receiver ND filter neutral density filter infrared emitting diode (see IEC 61603-1) Page 5 EN 61603-62002 5 Explanation of terms 5.1 Combined transmitter and radiator A combined transmitter and radiator (illustrated as element A-B in figure 1) does not
30、 have an electrical output. 5.2 Receiver As well as the general characteristics given in IEC 61 603-1, other characteristics may need to be specified if a receiver (illustrated as element B-C in figure 1) is combined with other functions. such as a television set. 5.3 Ancillary equipment Ancillary e
31、quipment, such as power supplies or battery chargers, may be required for the operation of a system. The manufacturer shall specify all the necessary data for correct operation and maintenance. 5.4 Transmission of video signals The transmission format of composite video signals and Y/C video signals
32、 are specified in this part of IEC 61603. 5.5 Safety aspects Safety aspects are considered in IEC 61603-1. 6 System considerations 6.1 Area of application This part of IEC 61603 describes a single-channel infrared video transmission system in one direction, mainly used for viewing a video programme
33、from a VCR, video camera, or video disc player. NOTE 1 In consumer applications, video signals may be available in composite video signals or in Y/C component video signals. NOTE 2 A channel for video signals is defined in IEC 61603-1. NOTE 3 Audio signal transmission systems are specified in IEC 61
34、603-2. NOTE 4 Transmission systems for high-speed data and remote control are under consideration. 6.2 Environmental conditions for operation The environmental conditions for the equipment are mainly defined in relevant standards for individual units. Unless otherwise specified, the equipment shall
35、at least be capable of operating within the following temperature and relative humidity ranges: 5 OC to 40 OC, and 25 % RH to 75 % RH Systems and apparatus in accordance with this part of IEC 61603 are primarily used indoors, with the advantage of operating more than one interference-free system in
36、adjacent rooms. 6.3 Due to the different applications for different room sizes, equipment is designed in various combinations of functional blocks. It is desirable to have only a few blocks of small size and low installation cost for home application. Partition of functions between elements of the s
37、ystems Page 6 EN 61603-62002 7 General conditions for measurements 7.1 Test conditions Temperature: Hum id ity: Brightness: 15 “C to 35 “C 45 % RH to 75 % RH 500 Ix to 1 O00 Ix (on the surface of the receiver) Normal (.e. not operating at high frequency) fluorescent lamps shall be used. 7.2 Location
38、 A sufficiently large room should be used for the test, so that the reflection of infrared radiation from the walls, floor and ceiling is negligible. NOTE The location illustrated in figure 2 may be used if a correction due to reflection is made. An absorbing optical filter (neutral density or ND fi
39、lter) is applied to the transmitter or the receiver. The following precautions are essential: a) take into account the correlation between the absorption of the filter and the transmitting d istance; b) when measuring directivity, adjust the filter to the direction of the transmitter; c) maintain th
40、e brightness at the receiver within the 500 Ix to 1 O00 Ix range 8 Characteristics to be specified and their methods of measurement 8.1 Transmitting distance and directivity 8.1 .I Transmitting distance Calculate the transmitting distance (as illustrated in figure 3) using the following equation: wh
41、ere do I E The transmitting distance d (in m) at the angle of maximum divergence at half the optical radiant intensity (such as HI, H2, VI, and V2 illustrated in figure 4) may be calculated as fol lows : is the transmitting distance (in m); is the specified radiant intensity (in mW/sr), and is the i
42、rradiance value (in mW/m2). 8.1.2 Characteristic of the transmitter to be specified The radiant intensity I (in mW/sr) in the optical axis (see figure 5). Measurement methods shall be in accordance with IEC 61603-1. Page 7 EN 61603-62002 8.1.3 The minimum required irradiance E (in mW/m2) for an unwe
43、ighted signal-to-noise (S/N) ratio of 40 dB under the following conditions (see figure 6): Characteristics of the receiver to be specified Directivity: optical axis (Oo) Signal: 50 % white Frequency deviation: Bandwidth: NTSC: 100 kHz to 4,2 MHz 100 kHz to 5,O MHz 2 MHz (sync tip: 11,5 MHz, peak whi
44、te: 13,5 MHz) PAL: 8.1.4 Maximum transmitting distance Calculate the maximum transmitting distance from the specified radiant intensity I (see 8.1.2) and the irradiance value E (see 8.1.3), using the equation specified in 8.1 .I. NOTE In another method, the maximum transmitting distance for an unwei
45、ghted S/N ratio of 40 dB under the conditions of 8.1.3 can be measured by aligning the optical axes of the transmitter and receiver, without measurement of the radiant intensity of the transmitter and the irradiance at the receiver. 8.1.5 Directivity 8.1 S.1 Directivity characteristics of the transm
46、itter to be specified Use an optical power meter to measure radiant intensity on the optical axis ?AB? (as illustrated in figure 7). Measure the radiant intensity at the vertical and horizontal angles H1 and vl in accordance with 8.1.2. Then find the directivity of the transmitter by measuring the r
47、adiant intensity I (in mW/sr) at various angles H1 and hl at the transmitter (see figure 8). Calculate the directivity characteristics of the transmitting distance from the above directivity characteristics and the irradiance E of receiver (8.1.3) using the equation specified in 8.1 .I. 8.1 S.2 Dire
48、ctivity characteristics of the receiver to be specified Use a transmitter giving a higher S/N ratio and the receiver to be measured on the optical axis (O degree) as below. Measure the minimum required irradiance E (in mW/m2) for an unweighted S/N ratio of 40 dB under the conditions specified in 8.1
49、.3, by changing the distance between the reference transmitter and the receiver. Find the minimum required irradiance E (mW/m2) in the direction ?AB? by measuring the irradiance at vertical and horizontal angles H2 and , at the receiver (see figure 9). Find the following characteristics of the receiver directivity by measuring the minimum required irradiance E at various angles H2 and h2 (see figure IO). Calculate the directivity characteristic of the transmitting distance from the above directivity characteristics and the radiant intensity I (in mW/sr) of the transmitt
