1、 3400855 0014773 643 W ETSI :CH N I CA L REPORT ETR 151 February 1995 Source: ETSI TC-EE Reference: DTR/EE-04005 UDC: 621.395 Key words: EMC, testing Equipment Engineering (EE); Electro-Magnetic Compatibility (EMC) testing of telecommunication equipment above I GHz ETSI European Telecommunications
2、Standards Institute ETSI Secretariat Postal address: 06921 Sophia Antipolis Cedex - FRANCE Office address: Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE Tel.: +33 92 94 42 O0 - Fax: +33 93 65 47 16 European Telecommunications Standards Institute 1 995. All rights reserved. No part may be
3、 reproduced except as authorised by written permission. The copyright and the foregoing restriction on reproduction extend to all media in which the information may be embodied. Page 2 ETR 151: February 1995 Whilst every care has been taken in the preparation and publication of this document, errors
4、 in content, typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to “ETSI Editing and Standards Approval Dept.“ at the address shown on the title page. Page 3 ETR 151: February 1995 Contents Foreword . 5 Introduction 5 1 2 3 4 5 6 7 8 9 10 11 . Scope 7 R
5、eferences . 7 Definitions and abbreviations 8 3.1 Definitions . 8 3.2 Abbreviations 8 Environment., . 9 Existing and future equipment 9 Immunity - protection of telecommunication services . 9 6.1 Immunity to radio transmissions . 10 6.2 Work in other standardisation bodies 11 Emission - Protection o
6、f telecommunication services 11 7.1 Narrowband interference sources . 11 7.2 Broadband interference sources 12 7.3 Work in other standardisation bodies 12 Source/victim operating distances . 12 Field strength at victims . 13 Case histories and laboratory evaluation. 13 Conclusion., . 14 History 22 E
7、TSI ETRxL5L 95 H 3400855 001479b 352 H Page 4 ETR 151: February 1995 Blank page ETSI ETR*IJSL 95 3400855 0014797 299 W Page 5 ETR 151: February 1995 Foreword This ETSI Technical Report (ETRI was produced by the Equipment Engineering (EEI Technical Committee of the European Telecommunications Standar
8、ds Institute (ETSI). ETRs are informative documents resulting from ETSI studies which are not appropriate for European Telecommunication Standard (ETSI or Interim European Telecommunication Standard (I-ETSI status. An ETR may be used to publish material which is either of an informative nature, rela
9、ting to the use or the application of ETSs or I-ETSs, or which is immature and not yet suitable for formal adoption as an ETS or an LETS. Introduction Until now, immunity threats involving telecommunication systems, identified to be above 1 GHz, are considered rare and are treated on a local case by
10、 case basis. However, there is concern that the new telecommunication services currently in use or under development may lead to a need for emission and immunity testing and compliance with determined requirements above 1 GHz. This ETR examines the need for any such additional testing, taking into a
11、ccount existing work in other agencies. Future studies, depending on the outcome of this initial examination of the topic, could address the following: a) the allowable emission levels; b) the required immunity levels; c) d) the application of available test methods; the principles for the developme
12、nt of new test methods where there are currently no suitable ones available. Page 6 ETR 151 : February 1995 ETSI ETR*:L51 95 D 3400855 0011i798 125 Blank page - ETSI ETR* - I? - O I.- (3 c O N N 7 - - Q m m 4 - E E O C O .- c m a a - B - O O (3 v) O rn v) c r o E 0 CT U a 2 r o C Q U Y a L 08 I.- I.
13、 Y 1 ul rn c a, Y f $ E o O U ri t 00 2 7 U W E i E - 106 103 103 where: E = maximum allowed interference level; d = distance between source and victim. ETSI ETR*LSL 75 3400855 00148L2 325 7 Victim Channel bandwidth Measuring bandwidth Correction factor kHz B channel) kHz (B measured) dB Page 20 ET
14、R 151 : February 1995 GSM DECT DCS 1800 Fixed links Table 5: Example of correction factors for measuring bandwidth 200 120 2 1728 120 9 200 120 2 35 O00 120 25 1 Correction factor = 10 log (B channellB measured). Table 6: Typical minimum source/victim distances Ail distances in metres. (note 4) NOTE
15、 1 : NOTE 2: NOTE 3: NOTE 4: NOTE 5: The 2,4 GHz Radio LAN uses the same frequency band as ISM, so this is a spectrum NOTE 6: NOTE 7: No mutual effect. ITE includes equipment connected to telecommunications networks (including LANs). Radio LAN includes HIPERLAN. 1,3 GHz radar is used on airports, 10
16、 GHz radar on ships. Use of handheld equipment inside building restricted, otherwise 3 m. management matter. For a telephone this can be 1 m. ETSI ETR*LSL 95 3400855 OOLYB13 2bL Page 21 ETR 151 : February 1995 DCS 1800 1710- 0,25 W 1785 DECT (O dB 1880- antenna gain) 1 900 DECT (6 dB 1880- antenna g
17、ain) 1 900 HIPERLAN (1 W) 5 150 - 5 300 Radio LAN 2 400 - 2 500 Radar 1,3 GHz 1,300 ISM (microwave) 2 400 - 2 500 Table 7: Field strengths at victims 0,3 03 NIA 2.7 0,9 0,9 0,9 0.3 0,9 0,3 03 03 2,7 2,7 2,7 0,9 2,7 NIA 0,6 1,8 1,8 5,5 5,5 5,5 1,7 5,5 NIA 0,6 5,5 5,5 NIA 5,5 1,8 1.8 5,5 5,5 02 1,7 1,7 N/A 1,7 0,6 0,6 1,7 1,7 7,7 7,7 7,7 15,4 7,7 7,7 15,4 7,7 15,4 0,6 1,8 13 NIA 1,8 0.6 1 0,6 1,8 mV/m Page 22 ETR 151: February February 1995 History First Edition ETSI ETRbLSL 95 ISBN 2-7437-0085-8 Dpt lgal : Fvrier 1995
