1、BSI Standards PublicationVideo surveillance systems for use in security applicationsPart 3: Analog and digital video interfacesBS EN 62676-3:2015National forewordThis British Standard is the UK implementation of EN 62676-3:2015. It isidentical to IEC 62676-3:2013. The UK participation in its prepara
2、tion was entrusted by TechnicalCommittee GW/1, Electronic security systems, to Subcommittee GW/1/10,Closed circuit television (CCTV).A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisi
3、ons ofa contract. Users are responsible for its correct application. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 79822 1ICS 13.320Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under
4、 the authority of theStandards Policy and Strategy Committee on 31 January 2015.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 62676-3:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 62676-3 January 2015 ICS 13.320 English Version Video surveillance sy
5、stems for use in security applications - Part 3: Analog and digital video interfaces (IEC 62676-3:2013) Systmes de vidosurveillance destins tre utiliss dans les applications de scurit - Partie 3: Interfaces vido analogiques et vido numriques (IEC 62676-3:2013) Videoberwachungsanlagen fr Sicherungsan
6、wendungen - Teil 3: Analoge und digitale Videoschnittstellen (IEC 62676-3:2013) This European Standard was approved by CENELEC on 2015-01-05. 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
7、 national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three official versions (English, French, Germa
8、n). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium,
9、 Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Sw
10、itzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CENELEC All rights of exploitation
11、in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 62676-3:2015 E BS EN 62676-3:2015EN 62676-3:2015 - 2 - Foreword This document (EN 62676-3:2015) consists of the text of IEC 62676-3:2013 prepared by IEC/TC 79 “Alarm and electronic security systems“. The following dates
12、 are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2016-01-05 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2018-01-05 Attention is drawn
13、 to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 62676-3:2013 was approved by CENELEC as a
14、European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60874-1:2011 NOTE Harmonized as EN 60874-1:2012 (not modified). IEC 61169-8 NOTE Harmonized as EN 61169-8. IEC 62676-1-2 NOTE Harmonized as EN
15、62676-1-2. IEC 62676-2-1 NOTE Harmonized as EN 62676-2-1. IEC 62676-2-2 NOTE Harmonized as EN 62676-2-2. IEC 62676-2-3 NOTE Harmonized as EN 62676-2-3. BS EN 62676-3:2015- 3 - EN 62676-3:2015 Annex ZA (normative) Normative references to international publications with their corresponding European pu
16、blications The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) appli
17、es. NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here: www.cenelec.eu Publication Year Title EN/HD Y
18、ear IEC 60068-1 1988 Environmental testing - Part 1: General and guidance EN 60068-1 1994 1)IEC 62315-1 2003 DTV profiles for uncompressed digital video interfaces - Part 1: General EN 62315-1 2003 VESA Industry Standards then packages them in accordance with the TCP/IP protocol and transmits them i
19、n the form of network stream. Whereas video/audio decoder is the equipment that unpacks and decodes the network stream to restore the analog video/audio signal for displaying on termination equipment such as monitor, etc. BS EN 62676-3:201562676-3 IEC:2013 17 Video/audio encoder may have female BNC
20、connector for inputting analog video signal and female RCA or female JACK3.5 connector (optional) for analog audio signal. It may have female RJ45 connector for outputting network stream. It may also have the connector to output PTZ instructions to the PTZ control unit. Video/audio decoder may have
21、female RJ45 connector for inputting network stream. It may have female BNC connector for outputting analog video signal and female RCA or female JACK3.5 connector (optional) for analog audio signal. 4.2.6 Fiber optical transmission equipment interface Fiber optical transmission equipment in VSS syst
22、em should have one of the FC, ST, SC or LC interfaces according to IEC 60874-1. Fiber optical equipment may have female BNC connector for inputting/outputting analog video signal and female RCA connector (optional) for analog audio signal. Fiber optical equipment may have female dB9 or RJ45 connecto
23、r that supports RS 232 or RS 485 communication protocol for auxiliary data transmission. 4.2.7 Wireless transmission equipment interface Wireless transmission equipment in VSS system is the equipment that transmits video/audio and control signals via radio frequency. The wireless transmission system
24、 can be structured in the topology of point-to-point, point-to-multipoint or multipoint-to-multipoint. Wireless transmission equipment may have female BNC connector for inputting/outputting composite video signal; it may also have female RCA or female JACK3.5 connector for audio signal. In addition,
25、 it may have female dB9 or RJ45 connector that supports RS-232 communication protocol for unidirectional or bidirectional auxiliary data transmission. 4.2.8 Alarm equipment interface Video surveillance system may have alarm interface which can input or output control signal from or to alarm equipmen
26、t. The connectors should adopt the corresponding form or wiring terminator. 4.3 Software interfaces for network access layer This subclause specifies software interfaces regarding network access layer. A number of layer-2 (datalink layer) technologies such as Ethernet (802.3), PPP, FDDI, IEEE 802.11
27、, IEEE 802.16 may be used for the software and protocol interface. The software interfaces need to be compatible with network layer specified in IEC 62676-2-1. 5 Electrical interfaces 5.1 General The electrical interface specifies electrical signals (e.g. composite, HDMI) used to connect various sur
28、veillance equipments such as cameras, display equipments, video processing and control equipments. 5.2 Analog video signal interface 5.2.1 Composite video Composite video signals such as NTSC or PAL signals are defined in SMPTE 170M or ITU-R.BT.470. However, VSS industry has different requirements,
29、and detailed requirements are specified in Clause 6. BS EN 62676-3:2015 18 62676-3 IEC:2013 5.2.2 Y/C video Y/C video (also called S-Video) is composed of a Y signal for luminance and a C signal which is obtained after orthogonally modulating the two color difference signals onto a subcarrier for ch
30、rominance. The chrominance subcarrier frequency is 4,43 MHz for PAL video or 3,58 MHz for NTSC video. Signal level of Y/C video is 1 V for Y signal, C signal is 0,3 V for PAL and 0,286 V for NTSC, and the matching impedance of the interface is 75 . 5.2.3 YPbPr analog component video Specifications o
31、f YPbPr video signal are described in the standards of SMPTE 240M, SMPTE 274M, SMPTE 293M, SMPTE 296M and ITU-R.BT.1358. 5.2.4 RGB analog component video 5.2.4.1 General Specifications of RGB analog component video signal are described in the standards of VESA. 5.2.4.2 Requirements on video waveform
32、 timings Every video output of a transmission device corresponding to this standard shall either support the format defined in IEC 62315-1:2003, 6.2.1, 640 480p in 60 Hz, or support 720 576p defined in IEC 62315-1:2003, 6.2.9. The timing of the video signal shall be according to Table 2 and the time
33、 charts in 6.2 of IEC 62315-1:2003. The video output of the transmission device shall be able to represent the formats of Table 1 of IEC 62315-1:2003, either with 59,94 Hz or 60 Hz (picture change frequency in consecutive scanning and half picture change frequency in line leap scanning). Therefore t
34、he 59,94 Hz and 60 Hz versions of a format shall be regarded as the same format with negligibly different pixel clock. The video output of a transmission device shall generate video signals, whose pixel frequencies deviate less than 0,5 % from the clock speed specified in Table 2 of IEC 62315-1:2003
35、. 5.2.4.3 VGA and derived video display interface standards VGA is a video interface standard used for computer monitors, where ability to transmit a sharp, detailed image is essential. VGA uses separate wires to transmit the three color component signals and vertical and horizontal synchronization
36、signals. The VGA display standards or modes are a combination of display resolution (specified as the width and height in pixels), color depth (measured in bits), and refresh rate (expressed in hertz). Most computer monitors have a 4:3 aspect ratio and some have 5:4. Monitors with 16:10 aspect ratio
37、s have become commonly available. A number of common resolutions have been used with video devices and video transmission devices and the VESA group has coordinated the efforts to a video standard, which is referred here. 5.2.4.4 VESA DMT interface standards and guidelines reference Table 1 contains
38、 a summary of display monitor timings (DMT) that are compliant to this standard. This clause refers to all current VESA Industry Standards b) monochrome or color video monitor; c) video noise meter, capable of PAL and NTSC weighted noise measurements; d) video signal generator providing appropriate
39、test signals; e) a video vectorscope. NOTE Video analysis equipment combining some of the above mentioned functions can be used. 7.2.3 Test signals List of signals (also refer to CCIR Recommendation 567-3:1990, Annex 1, part C for PAL, FCC for NTSC). Signal A: half frame white and black bar signal (
40、see Figure A.1). Signal B: pulse and bar signal (see Figure A.2) for PAL. FCC composite signal for NTSC Signal C: frequency burst (see Figure A.3) for PAL. FCC multi burst signal for NTSC Signal D1 and D2: grey scale signal (see Figures A.4 and A.5). Signal E: 20T pulse (see Figure A.6) for PAL. BS
41、EN 62676-3:2015 24 62676-3 IEC:2013 FCC composite signal for NTSC. 7.2.4 Equipment set-up The transmission equipment shall be connected and adjusted in accordance with the manufacturers recommendations, for the recommended cables and up to their maximum specified length. Unless otherwise specified i
42、n the tests, the system shall be operated at nominal input and output levels and terminated in a standard load impedance of 75 . 7.3 Laboratory conditions Unless otherwise specified, the atmospheric conditions in the laboratory shall be the standard atmospheric conditions for measurements and tests,
43、 specified in IEC 60068-1:1988, 5.3.1, as follows: Temperature: 15 C to 35 C Relative humidity: 25 % to 75 % Air pressure: 86 kPa to 106 kPa 8 Analog video signal transmission performance tests 8.1 Input and output signal levels 8.1.1 Principle The objective is to verify the minimum and maximum sign
44、al amplitude at the transmission equipment input and output terminals. 8.1.2 Preparation of the test A TV-signal generator providing grey scale signal D2, Figure A.5, shall be connected to the terminated equipment input. The amplitude and the blanking reference voltage of the input and output signal
45、s shall be monitored on a dc-coupled waveform monitor. 8.1.3 Test procedure The composite video test signal applied at the input shall be (0,7 0,05) Vp-pfor PAL or (0,714 0,05) Vp-pfor NTSC (luminance part), of which the amplitude of the synchronization signal shall be (0,3 0,05) Vp-pfor PAL or (0,2
46、86 0,05) Vp-pfor NTSC. Superimpose a positive and negative dc-voltage on the video test signal such that the blanking level of the test signal reaches + 2 V and 2 V. Allow some time for the equipment to stabilise to the new input condition. 8.1.4 Criterion for compliance The transmission equipment s
47、hall be capable of operating over the full test without noticeable distortion of video signal at the output. Clipping or crushing of the video and synchronization signals at the equipment output is not allowed. 8.2 Insertion gain 8.2.1 Principle Verify ratio of the output signal to the input signal
48、of the transmission equipment. 8.2.2 Preparation of the test A TV-signal generator providing signal element B3, Figure A.2, shall be connected to the equipment input. The amplitude and the blanking reference voltage of the input and output BS EN 62676-3:201562676-3 IEC:2013 25 signals shall be monit
49、ored on a dc-coupled waveform monitor. The input source impedance and output termination impedance shall be 75 , with a relative tolerance of 0,5 %. 8.2.3 Test procedure Measure the peak to peak voltage of test signal B3, Figure A.2 at the input and at the output of the transmission equipment. The amplitude and timing of the test signal are measured between the centre point of the bar signal and the blanking level. 8.2.4 Criterion for compliance The transfer gain of the transmission equipment shall be (0 1)
