1、 International Telecommunication Union ITU-T K.48TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (09/2006) SERIES K: PROTECTION AGAINST INTERFERENCE EMC requirements for telecommunication equipment Product family Recommendation ITU-T Recommendation K.48 ITU-T Rec. K.48 (09/2006) i ITU-T Recommendati
2、on K.48 EMC requirements for telecommunication equipment Product family Recommendation Summary This Recommendation specifies the emission and immunity requirements for switching, transmission, power, digital mobile base station, wireless LAN, digital radio relay system, digital subscriber line (xDSL
3、) and supervisory equipment. It also describes operational conditions for emission and immunity testing. Performance criteria for immunity tests are also specified. Source ITU-T Recommendation K.48 was approved on 22 September 2006 by ITU-T Study Group 5 (2005-2008) under the ITU-T Recommendation A.
4、8 procedure. ii ITU-T Rec. K.48 (09/2006) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying tech
5、nical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which,
6、 in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IE
7、C. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to en
8、sure e.g. interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does
9、 not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning
10、 the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, protected by patents
11、, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2006 All rights reserved. No part of this publicat
12、ion may be reproduced, by any means whatsoever, without the prior written permission of ITU. ITU-T Rec. K.48 (09/2006) iii CONTENTS Page 1 Scope 1 2 References. 1 3 Definitions 3 4 Abbreviations 6 5 Test methods and limits 7 5.1 Emission . 7 5.2 Immunity 7 6 General operational conditions and test c
13、onfiguration . 8 7 Specific operational conditions and test configurations . 9 7.1 Operational conditions for switching equipment . 9 7.2 Operational conditions for transmission equipment. 10 7.3 Operational conditions for power equipment . 11 7.4 Operational conditions for supervisory equipment 11
14、7.5 Specific operational condition and test configuration for wireless LAN. 11 7.6 Specific operational condition and test configuration for digital mobile Base Station (BS) . 15 7.7 Specific operational condition and test configuration for digital radio relay system 20 7.8 Specific operational cond
15、ition and test configuration for xDSL equipment 24 8 Performance criteria 26 8.1 Performance criteria for switching equipment . 27 8.2 Performance criteria for transmission equipment. 29 8.3 Performance criteria for power supply equipment . 31 8.4 Performance criteria for supervisory equipment 32 8.
16、5 Performance criteria for wireless LAN 32 8.6 Specific performance criteria for digital mobile base station. 34 8.7 Specific performance criteria for digital radio relay systems. 36 8.8 Specific performance criteria for Digital Subscriber Line (DSL) access systems . 39 Annex A Immunity test levels
17、40 Appendix I Equipment within the scope of the present Recommendation. 47 ITU-T Rec. K.48 (09/2006) 1 ITU-T Recommendation K.48 EMC requirements for telecommunication equipment Product family Recommendation 1 Scope This Recommendation specifies the emission and immunity requirements for switching,
18、transmission, power, digital mobile base station, wireless LAN, digital radio relay system, digital subscriber line (xDSL) and supervisory equipment. It also describes operational conditions for emission and immunity testing. Performance criteria for immunity tests are also specified. The general op
19、erational condition and performance criteria are recommended in ITU-T Rec. K.43. This Recommendation describes the specific testing conditions to be applied to telecommunication network equipment. 2 References The following ITU-T Recommendations and other references contain provisions which, through
20、 reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the
21、 most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. 1 ITU-T Recom
22、mendation G.703 (2001), Physical/electrical characteristics of hierarchical digital interfaces. 2 ITU-T Recommendation G.712 (2001), Transmission performance characteristics of pulse code modulation channels. 3 ITU-T Recommendation G.798 (2004), Characteristics of optical transport network hierarchy
23、 equipment functional blocks. 4 ITU-T Recommendation G.812 (2004), Timing requirements of slave clocks suitable for use as node clocks in synchronization networks. 5 ITU-T Recommendation G.813 (2003), Timing characteristics of SDH equipment slave clocks (SEC). 6 ITU-T Recommendation G.991.1 (1998),
24、High bit rate digital subscriber line (HDSL) transceivers. 7 ITU-T Recommendation G.991.2 (2003), Single-pair high-speed digital subscriber line (SHDSL) transceivers. 8 ITU-T Recommendation G.992.3 (2005), Asymmetric digital subscriber line transceivers 2 (ADSL2). 9 ITU-T Recommendation G.992.5 (200
25、5), Asymmetric Digital Subscriber Line (ADSL) transceivers Extended bandwidth ADSL2 (ADSL2plus). 10 ITU-T Recommendation G.993.1 (2004), Very high speed digital subscriber line transceivers (VDSL). 11 ITU-T Recommendation G.961 (1993), Digital transmission system on metallic local lines for ISDN bas
26、ic rate access. 12 ITU-T Recommendation G.996.1 (2001), Test procedures for digital subscriber line (DSL) transceivers. 2 ITU-T Rec. K.48 (09/2006) 13 ITU-T Recommendation K.27 (1996), Bonding configurations and earthing inside a telecommunication building. 14 ITU-T Recommendation K.34 (2003), Class
27、ification of electromagnetic environmental conditions for telecommunication equipment Basic EMC Recommendation. 15 ITU-T Recommendation K.38 (1996), Radiated emission test procedure for physically large systems. 16 ITU-T Recommendation K.43 (2003), Immunity requirements for telecommunication equipme
28、nt. 17 ITU-T Recommendation O.150 (1996), General requirements for instrumentation for performance measurements on digital transmission equipment. 18 ITU-T Recommendation O.41 (1994), Psophometer for use on telephone-type circuits. 19 ITU-R Recommendation SM.329-10 (2003), Unwanted emissions in the
29、spurious domain. 20 ITU-T Recommendation I.430 (1995), Basic user-network interface Layer 1 specification. 21 ITU-T Recommendation I.431 (1993), Primary rate user-network interface Layer 1 specification. 22 ITU-T Recommendation Q.552 (2001), Transmission characteristics at 2-wire analogue interfaces
30、 of digital exchanges. 23 ITU-T Recommendation V.10 (1993), Electrical characteristics for unbalanced double-current interchange circuits operating at data signalling rates nominally up to 100 kbit/s. 24 ITU-T Recommendation V.11 (1996), Electrical characteristics for balanced double-current interch
31、ange circuits operating at data signalling rates up to 10 Mbit/s. 25 ITU-T Recommendation V.24 (2000), List of definitions for interchange circuits between data terminal equipment (DTE) and data circuit-terminating equipment (DCE). 26 ITU-T Recommendation V.28 (1993), Electrical characteristics for
32、unbalanced double-current interchange circuits. 27 ITU-T Recommendation V.36 (1998), Modems for synchronous data transmission using 60-108 kHz group band circuits. 28 ITU-T Recommendation X.24 (1988), List of definitions for interchange circuits between Data Terminal Equipment (DTE) and Data Circuit
33、-terminating Equipment (DCE) on public data networks. 29 ITU-T Recommendation X.25 (1996), Interface between Data Terminal Equipment (DTE) and Data Circuit-terminating Equipment (DCE) for terminals operating in the packet mode and connected to public data networks by dedicated circuit. 30 IEC CISPR
34、22 (2005 Fifth edition), Information technology equipment Radio disturbance characteristics Limits and methods of measurement. 31 IEC 60050-161:1990, International Electrotechnical Vocabulary Chapter 161: Electromagnetic compatibility. 32 IEC 60050-714:1992, International Electrotechnical Vocabulary
35、 Chapter 714: Switching and signalling in telecommunications. 33 IEC 61000-3-2:2005, Electromagnetic compatibility (EMC) Part 3-2: Limits Limits for harmonic current emissions (equipment input current up to and including 16 A per phase). ITU-T Rec. K.48 (09/2006) 3 34 IEC 61000-3-3:2005, Electromagn
36、etic compatibility (EMC) Part 3-3: Limits Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for equipment with rated current up to and including 16 A per phase and not subject to conditional connection. 35 IEC 61000-4-2:2001, Electromagnetic compat
37、ibility (EMC) Part 4-2: Testing and measurement techniques Electrostatic discharge immunity test. 36 IEC 61000-4-3:2006, Electromagnetic compatibility (EMC) Part 4-3: Testing and measurement techniques Radiated, radio-frequency, electromagnetic field immunity test. 37 IEC 61000-4-4:2004, Electromagn
38、etic compatibility (EMC) Part 4-4: Testing and measurement techniques Electrical fast transient/burst immunity test. 38 IEC 61000-4-5:2005, Electromagnetic compatibility (EMC) Part 4-5: Testing and measurement techniques Surge immunity test. 39 IEC 61000-4-6:2006, Electromagnetic compatibility (EMC)
39、 Part 4-6: Testing and measurement techniques Immunity to conducted disturbances, induced by radio-frequency fields. 40 IEC 61000-4-11:2004, Electromagnetic compatibility (EMC) Part 4-11: Testing and measurement techniques Voltage dips, short interruptions and voltage variations immunity tests. 41 I
40、EC 61000-4-29:2000, Electromagnetic compatibility (EMC) Part 4-29: Testing and measurement techniques Voltage dips, short interruptions and voltage variations on d.c. input power port immunity tests. 42 ETSI TS 125 101:2001, Universal Mobile Telecommunications System (UMTS); UE radio transmission an
41、d reception (FDD). 43 ETSI TS 125 102:2001, Universal Mobile Telecommunications System (UMTS); UTRA (UE) TDD; Radio transmission and reception. 44 ETSI TS 101 087:2005, Digital cellular telecommunications system (Phase 2+); Base Station System (BSS) equipment specification; Radio aspects. 45 TIA/EIA
42、/IS-2000.2-C (2002), Physical Layer Standard for cdma2000 Spread Spectrum Systems Release C. 46 TIA/EIA-97-D-2001, Recommended Minimum Performance Standards for Base Stations Supporting Dual Mode Spread Spectrum Systems. 47 ISO/IEC 8802-3 (2000), Information technology Telecommunications and informa
43、tion exchange between systems Local and metropolitan area networks Specific requirements Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications. 48 ITU-T Recommendation G.997.1 (2006), Physical layer management for digital subscriber
44、line (DSL) transceivers. 3 Definitions The following definitions apply only in the context of this Recommendation, except where the reference to the International Electrotechnical Vocabulary 31 is given adjacent to the subclause title. 3.1 aggregate signal: Digital signal related to the transmission
45、 of data derived by the aggregation of tributary signal, service channels, and other information necessary to the functionality of a transmission system. 4 ITU-T Rec. K.48 (09/2006) 3.2 burst (161-02-07): A sequence of a limited number of distinct pulses or an oscillation of limited duration. 3.3 ca
46、ble port: A point at which a conductor or a cable is connected to the equipment. 3.4 characteristic severity: A severity that has only a low probability (generally less than 1%) of being exceeded for a certain parameter in an environmental class. This term relates to duration, rate of occurrence, or
47、 location. It applies to environmental and immunity requirements. 3.5 connection: A temporary association of transmission channels or telecommunication circuits, switching or other functional units set up to provide for the transfer of information between two or more points in telecommunication netw
48、orks 32. 3.6 continuous disturbance (161-02-11): Electromagnetic disturbance whose effects on a particular device or piece of equipment cannot be resolved into a succession of distinct effects. 3.7 discontinuous interference (161-02-13): Electromagnetic interference occurring during certain time int
49、ervals separated by interference-free intervals. 3.8 coupling and decoupling networks: Coupling and Decoupling Networks (CDN) which terminates a cable with a common mode impedance to ground. The CDN shall not unduly affect the functional signals. 3.9 duration (of a pulse) (161-08-03): The interval of time between the first and last instants when the instantaneous value of a pulse reaches 50% of the pulse magnitude. 3.10
