1、BRITISH STANDARD BS EN 61603-6:2002 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 of a British Standard ICS 33.160.01; 33.040.40 BS EN 61603-6:2002 This British Standard, ha
2、ving 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 BSI 29 July 2002 ISBN 0 580 40119 7 National foreword This British Standard is the official English la
3、nguage version of EN 61603-6:2002. It is identical with IEC 61603-6:2001. The UK participation in its preparation was entrusted to Technical Committee EPL/100, Audio, video and multimedia systems, which has the responsibility to: A list of organizations represented on this committee can be obtained
4、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 of time during the change over from one numbering system to the other, publications may contain identifiers fr
5、om 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 the “Search” facility of the BSI Electr
6、onic Catalogue or of British Standards 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 of itself confer immunity from legal obligations. aid enquirers to
7、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. Summary of pages This document com
8、prises 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 publication Amd. No. Date CommentsEUROPEAN STANDARD EN 61603-6
9、NORME EUROPENNE EUROPISCHE NORM February 2002 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 2002 CENELEC - All rights of explo
10、itation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61603-6:2002 E 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 signals (IEC 61603-6:2001) Transmission de s
11、ignaux audio et/ou video et de signaux similaires au moyen du rayonnement infrarouge Partie 6: Signaux vido et audiovisuels (CEI 61603-6:2001) bertragung von Ton- und/oder Bildsignalen und verwandten Signalen mit Infrarot-Strahlung Teil 6: Video- und audiovisuelle Signale (IEC 61603-6:2001) This Eur
12、opean Standard was approved by CENELEC on 2001-12-01. 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 referenc
13、es 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 by translation under the responsibility of a CENELEC memb
14、er 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, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Neth
15、erlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EN 60613-:60022 - - 2 Foreword The text of document 100/295/FDIS, future edition 1 of IEC 61603-6, prepared by IEC TC 100, Audio, video and multimedia systems and equipment, was submitted to the IEC-CENELEC parallel vote and wa
16、s 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 national standard or by endorsement (dop) 2002-09-01 latest date by which the national standards conflicting with the
17、EN have to be withdrawn (dow) 2004-12-01 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 notice The text of the International Standard IEC 61603-6:2001 was approved by CENELEC as a Europea
18、n Standard without any modification. _ Page2 EN616036:2002 2 616-306 EI:C002(1)E CONTENTS 1 Scope 4 2 Normative references. 4 3 Definitions 4 4 Abbreviations. 4 5 Explanation of terms 5 6 System considerations . 5 7 General conditions for measurements 6 8 Characteristics to be specified and their me
19、thods of measurement 6 9 Interface values, performance requirements and recommendations . 8 10 Marking and contents of specifications. 10 Figure 1 Transmission chain 10 Figure 2 Location for measuring 11 Figure 3 Transmitting distance 11 Figure 4 Angle of maximum divergence at half optical radiant i
20、ntensity 11 Figure 5 Radiant intensity of transmitter or radiator . 11 Figure 6 Irradiance of receiver. 12 Figure 7 Characteristics of the transmitter . 12 Figure 8 Directivity characteristics of the transmitter . 12 Figure 9 Characteristics of the receiver . 13 Figure 10 Directivity characteristics
21、 of the receiver 13 Figure 11 Measuring system for spurious emission 14 Figure 12 Transmission format (composite video signal) 14 Figure 13 Transmission format (Y/C separation video signal) 15 Figure 14 Pre-emphasis circuit (example) 15 Table 1 Marking and contents of specifications 10 Annex ZA (nor
22、mative) Normative references to international publications with their corresponding European publications 16 Page3 EN616036:2002 4 166-306 EI:C002(1)E TRANSMISSION OF AUDIO AND/OR VIDEO AND RELATED SIGNALS USING INFRA-RED RADIATION Part 6: Video and audio-visual signals 1 Scope IEC 61603-1 specifies
23、 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 covered by IEC 61603-1, nor by other standards. It allow
24、s 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 references The following normative documents contain prov
25、isions 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 part of IEC 61603 are encouraged to investigate the p
26、ossibility 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 ISO maintain registers of currently valid International Standards. IEC 61603-1, Transmission of aud
27、io and/or video and related signals using infra-red radiation Part 1: General IEC 61603-2, Transmission of audio and/or video and related signals using infra-red radiation Part 2: Transmission systems for audio wide band and related signals IEC 61938, Audio, video and audiovisual systems Interconnec
28、tions 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 infrared emitting diode (see IEC 61603-1) PD photo diode O/E optical/electrical
29、Tx transmitter/radiator Rx receiver ND filter neutral density filter Page4 EN616036:2002 166-306 EI:C002(1)E 5 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 have an electrical output. 5.2 Receiver As
30、 well as the general characteristics given in IEC 61603-1, 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 equipment, such as power supplies or battery
31、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 are specified in this part of IEC 61603. 5.
32、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 from a VCR, video camera, or video disc play
33、er. 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 61603-2. NOTE 4 Transmission systems for high-
34、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 at least be capable of operating within the
35、following temperature and relative humidity ranges: 5 C to 40 C, 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 adjacent rooms. 6.3 Partition of functions bet
36、ween elements of the systems 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. Page5 EN616036:2002 6 166-306 EI:C002(1
37、)E 7 General conditions for measurements 7.1 Test conditions Temperature: 15 C to 35 C Humidity: 45 % RH to 75 % RH Brightness: 500 lx to 1 000 lx (on the surface of the receiver) Normal (i.e. not operating at high frequency) fluorescent lamps shall be used. 7.2 Location A sufficiently large room sh
38、ould 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 filter) is applied to the trans
39、mitter or the receiver. The following precautions are essential: a) take into account the correlation between the absorption of the filter and the transmitting distance; b) when measuring directivity, adjust the filter to the direction of the transmitter; c) maintain the brightness at the receiver w
40、ithin the 500 lx to 1 000 lx range. 8 Characteristics to be specified and their methods of measurement 8.1 Transmitting distance and directivity 8.1.1 Transmitting distance Calculate the transmitting distance (as illustrated in figure 3) using the following equation: E I d = 0 where d 0 is the trans
41、mitting distance (in m); I is the specified radiant intensity (in mW/sr), and E is the irradiance value (in mW/m 2 ). The transmitting distance d (in m) at the angle of maximum divergence at half the optical radiant intensity (such as H 1 , H 2 , V 1 , and V 2illustrated in figure 4) may be calculat
42、ed as follows: d I E d = 2 1 2 0 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. Page6 EN616036:2002 166-306 EI:C002(1)E 7 8.1.3 Characteristics of the receiver
43、 to be specified The minimum required irradiance E (in mW/m 2 ) for an unweighted signal-to-noise (S/N) ratio of 40 dB under the following conditions (see figure 6): Directivity: optical axis (0) Signal: 50 % white Frequency deviation: 2 MHz (sync tip: 11,5 MHz, peak white: 13,5 MHz) Bandwidth: NTSC
44、: 100 kHz to 4,2 MHz PAL: 100 kHz to 5,0 MHz 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 8.1.1. NOTE In another method, the maximum transmitt
45、ing distance for an unweighted 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 8.1.5.1 Directivity char
46、acteristics of the transmitter 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 V1 in accordance with 8.1.2. Then find the directivity of the trans
47、mitter by measuring the radiant intensity I (in mW/sr) at various angles H1and V1at 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
48、in 8.1.1. 8.1.5.2 Directivity 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 (0 degree) as below. Measure the minimum required irradiance E (in mW/m 2 ) for an unweighted S/N ratio of 40 dB under the con
49、ditions specified in 8.1.3, by changing the distance between the reference transmitter and the receiver. Find the minimum required irradiance E (mW/m 2 ) in the direction “AB” by measuring the irradiance at vertical and horizontal angles H2and V2at the receiver (see figure 9). Find the following characteristics of the receiver directivity by measuring the minimum required irradianc
