ETSI ETS 300 445-1996 Radio Equipment and Systems (RES) Electro-Magnetic Compatibility (EMC) Standard for Wireless Microphones and Similar Radio Frequency (RF) Audio Link Equipment.pdf

1、. ETSI ETS*300*445 9b 3400855 007745b IT4 ETS 300 445 January 1996 Source: ETSI TC-RES Reference: DWRES-09015 ICs: 33.020, 33.100 Key words: audio, EMC, radio, radio mic, testing Radio Equipment and Systems (RES); Electro-Magnetic Compatibility (EMC) standard for wireless microphones and similar Rad

2、io Frequency (RF) audio link equipment ETSI European Telecommunications Standards Institute ETSI Secretariat Postal address: F-O6921 Sophia Antipolis CEDEX - FRANCE Mice address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE XAOO: c=fr, a=atlas, p=etsi, s=secretaiiat, - Internet: sec

3、retariat Qetci.fr * Tel.: +33 92 94 42 O0 - Fax: +33 93 65 47 16 Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. Q European Telecommunications Standards Institute 1996. All

4、rights resewed. _ _ ETSI ETS*300*445 96 3400855 O077457 030 Page 2 ETC 300 445 : January 1996 Whilst every care has been taken in the preparation and publication of this document, errors in content, typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to

5、“ETSI Editing and Committee Support Dept.“ at the address shown on the title page. ETSI ETS*300*445 96 W 3400855 0077458 T77 Page 3 ETS 300 445 : January 1996 Contents Foreword . 5 Introduction 5 Scope 7 Normative references 7 Definitions and Abbreviations 8 3.1 Definitions 8 3.2 Abbreviations . 9 G

6、eneral test conditions 9 4.1 Test conditions . 9 4.2 Arrangements for test signals at the input of the transmitter . 10 4.3 Arrangements for test signals at the output of the transmitter . 10 4.4 Arrangements for test signals at the input of the receiver . 10 4.5 Arrangements for test signals at the

7、 output of the receiver . 12 4.6 Receiver and receivers of transceiver exclusion band 12 4.7 Transmitter exclusion band 13 4.8 Narrow band responses of stand alone receivers or receivers which are part of a transceiver . 13 Performance assessment . 13 5.1 General 13 5.2 Equipment which can provide a

8、 communications link . 14 5.3 Equipment which does not provide a communications link . 14 5.4 Pass or fail criteria . 14 5.5 Equipment classification 14 5.6 Ancillary equipment 14 Performance criteria 15 6.1 General performance criteria . 15 6.2 6.3 Performance criteria for equipment that is not cap

9、able of establishing a communications link 16 6.4 6.5 6.6 6.7 Performance criteria for equipment capable of establishing a communications link . 16 Performance criteria for Continuous phenomena applied to Transmitters (CT) 16 Performance criteria for Transient phenomena applied to Transmitters (lT)

10、. 16 Performance criteria for Continuous phenomena applied to Receivers (CR) 17 Performance criteria for Transient phenomena applied to Receivers (TR) . 17 Applicability overview tables 18 7.1 Emission 18 7.2 Immunity 18 Test methods for emission tests of transmitters and/or receivers and/or ancilla

11、ry equipment . 19 8.2 8.1 Test configuration 19 Enclosure . ancillary equipment . 19 8.2.1 Definition . 19 8.2.2 Test method 19 8.2.3 Limits . 19 DC power input/output PO rt 20 8.3.1 Definition . 20 8.3.2 Test method 20 8.3.3 Limits for conducted RF signals 20 AC mains power input/output PO rt 20 8.

12、3 8.4 ETSI ETS*300*445 9b 3400655 0077q59 903 Page 4 ETS 300 445 : January 1996 8.4.1 Definition . 21 8.4.2 Test method 21 8.4.3 Limits 21 9 Test methods for immunity tests of transmitters and/or receivers and/or ancillary equipment 21 9.1 9.2 9.3 9.4 9.5 9.6 9.7 9.8 Test configuration 21 Radio freq

13、uency electromagnetic field (80 to 1 O00 MHz) 21 9.2.1 Definition . 22 9.2.2 Test method 22 9.2.3 Performance criteria . 22 Electrostatic discharge 22 9.3.1 Definition . 22 9.3.2 Test method 22 9.3.3 Performance criteria . 23 Fast transients common mode 23 9.4.1 Definition . 23 9.4.2 Test method 23

14、9.4.3 Performance criteria . 24 RF common mode. O. 15 MHz to 80 MHz (current clamp injection) 24 9.5.1 Definition . 24 9.5.2 Test method and level 24 9.5.3 Performance criteria . 25 Transients and surges. vehicular environment . 25 9.6.1 Definition . 25 9.6.2 Test method and level 25 9.6.3 Performan

15、ce criteria . 27 Voltage dips and interruptions . 27 9.7.1 Definition . 27 9.7.2 Test method 27 9.7.3 Performance criteria . 28 Transients common and differential mode 28 9.8.1 Definition . 28 9.8.2 Test method and level 29 9.8.3 Petformance criteria . 29 Annex A (normative): EUT test configuration

16、requirements . 30 A.l General . 30 A.2 Audio excitation 30 History . 31 - - ETSI ETS*300*445 96 3400855 O077460 b25 Page 5 ETS 300 445 : January 1996 Foreword This European Telecommunication Standard (ETS) was produced by the Radio Equipment and Systems (RES) Technical Committee of the European Tele

17、communications Standards Institute (ETSI). Transposition dates Date of adoption of this ETS: Date of latest announcement of this ETS (doa): 15 December 1995 30 April 1996 Date of latest publication of new National Standard or endorsement of this ETS (dop/e): 31 October 1996 Date of withdrawal of any

18、 conflicting National Standard (dow): 31 October 1996 Introduction Wireless radio microphone equipment operates with a continuous RF output signal and will normally be in continuous operation for a number of hours. The transmitter typically operates at a maximum radio frequency output power of 50 mW

19、. Wireless radio microphones may be distinguished from other voice communication equipment (e.g. PMR) by the following operational characteristics: 1) wider audio bandwidth; 2) higher audio signal to noise ratio; 3) lower audio frequency distortion. Aids for the handicapped, tour guides systems and

20、similar constant RF devices operate in a similar manner to wireless microphones, but with variations of bandwidth and reduced RF output power. RF audio link equipment conform to the same parameters as a wireless radio microphone but with a higher RF carrier power. RF audio link equipment is generall

21、y used for longer distance transmission, e.g. outside broadcast applications. Page 6 ETS 300 445 : January 1996 Blank page ETSI ETS*300*V45 76 H 3400855 0077462 4T8 Page 7 ETC 300 445 : January 1996 1 Scope This ETS covers the assessment of radio communication and ancillary equipment in respect of e

22、lectromagnetic compatibility. Technical specifications related to the antenna port are not included in this standard. Such technical specifications are found in the relevant product standards for the effective use of the radio spectrum. This ETC specifies the applicable EMC tests, the measurement me

23、thods, the limits and the minimum performance criteria for wireless microphones and similar RF audio link equipment operating in the frequency range 25 MHz to 4 GHz, and any associated ancillary equipment. The environment classification used in this ETC refers to the environment classification used

24、in the Generic Standards EN 50081-1 2, EN 50082-1 3, except the vehicular environment class which refers to IS0 7637 4. The EMC technical specifications have been selected to ensure an adequate level of compatibility for apparatus at residential, commercial, light industrial and vehicular environmen

25、ts. The levels however do not cover extreme cases which may occur in any location but with a low probability of occurrence. This ETS may not cover those cases where a potential source of interference, which is producing individually repeated transient phenomena or a continuous phenomena, is permanen

26、tly present, e.g. a radar or broadcast site in the near vicinity. In such a case it may be necessary to use special mitigation measures applied to either the source of the interference or to the interfered part of both. If other transmitters or receivers are combined with either wireless radio micro

27、phones or RF audio link equipment, they shall be tested to their appropriate EMC standard. Compliance of radio equipment to the technical specifications of this ETS does not signify compliance to any requirements related to the use of the equipment (licensing requirements). Compliance to this ETS do

28、es not signify compliance to any safety requirement. However, it is the responsibility of the assessor of the equipment that an observation regarding the equipment becoming dangerous or unsafe as a result of the application of the tests defined in this ETS should be recorded in the test report. 2 No

29、rmative references This ETS incorporates, by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and relate to the publications listed hereafter. For dated references, subsequent amendments to or revisions of any

30、of these publications apply to this ETS only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies. 131 141 151 89/336/EEC: “Council Directive on the approximation of the laws of the Member States relating to electromagnet

31、ic compatibility“. EN 50081 -1 (1 992): “Electromagnetic compatibility - Generic emission standard. Part 1 : Residential, commercial and light industry“. EN 50082-1 (1 992): “Electromagnetic compatibility - Generic immunity standard. Part 1 : Residential, commercial and light industry“. IS0 7637 (1

32、990): “Road vehicles, Electrical disturbance by conducting and coupling“ Part 1: “Passenger cars and light commercial vehicles with nominal 12 V supply voltage. IS0 7637 (1 990): “Road vehicles, Electrical disturbance by conduction and coupling“. Part 2: “Commercial vehicles with nominal 24 V supply

33、 voltage, Electrical transient conduction along supply lines only“. EN 55022: (1987): “Limits and methods of measurement of radio interference characteristics of information technology equipment“. Page 8 ETS 300 445 : January 1996 - CISPR Publication No. 16-1: “Specification for radio disturbance an

34、d immunity measuring apparatus and methods“. ENV 501 40: “Basic immunity standard - Radiated, radio-frequency, electromagnetic fields“. IEC 1000-4-2 : (1995) Part 4: “Testing and measurement techniques“.Section 2: Electrostatic discharge immunity test“. IEC 1000-4-4: (1995) Part 4: “Testing and meas

35、urement techniques - Section 4: Electrical fast transienburst immunity test“. ENV 50141 : “Basic immunity standard - Conducted disturbances induced by radio-frequency fields.“ IEC 1000-4-11 (1994): Part 4: “Testing and measurement techniques - Section 11 : Voltage dips, short interruptions and volta

36、ge variations immunity tests“. ENV 501 42: “Electromagnetic compatibility - Basic immunity standard - Surge immunity tests“. prETS 300 339: “Radio Equipment and Systems (RES); General Electro- Magnetic Compatibility (EMC) for radio equipment“. ETS 300 422: “Radio Equipment and Systems (RES); Technic

37、al characteristics and test methods for wireless microphones in the 25 MHz to 3 GHz frequency range“. ETS 300 454: “Radio Equipment and Systems (RES); Technical characteristics and test methods in the 25 MHz - 3 GHz frequency range for wide band audio links“. Definitions and Abbreviations Definition

38、s For the purpose of this ETS, the following definitions apply: vehicle battery:The battery used for the principle operation of the vehicle, .e. the starting of the vehicle. ancillary equipment: Equipment (apparatus), used in connection with a receiver, transmitter or transceiver is considered as an

39、 ancillary equipment (apparatus): - the equipment is intended for use in conjunction with a receiver, transmitter or transceiver to provide additional operational and/or control features to the radio equipment (e.g. to extend control to another position or location); and - the equipment cannot be us

40、ed on a stand alone basis to provide user functions independently of a receiver, transmitter or transceiver; and - the receiver, transmitter or transceiver to which it is connected, is capable of providing some intended operation such as transmitting and/or receiving without the ancillary equipment

41、(.e. it is not a sub unit of the main equipment essential to the main equipment basic functions). integral antenna: An antenna designed to be connected to the equipment without the use of a 50f2 external connector and considered to be part of the equipment. An integral antenna may be fitted internal

42、ly or externally to the equipment. port: A particular interface of the specified apparatus with the external electromagnetic environment (see figure 1). - - - ETSI ETS*300*445 96 3400855 0077464 270 Page 9 ETS 300 445 : January 1996 Enclosure port APPARATUS Figure 1: Examples of ports A cable port i

43、s any connection point to an equipment intended for connection of cables to or from that equipment. enclosure port: The physical boundary of the apparatus through which electromagnetic fields may radiate or impinge. manufacturer: The legal entity responsible under the terms of the Council Directive,

44、 89/336/EEC l, for placing the product on the market. radio communications equipment: An apparatus which includes one or more transmitters and/or receivers and/or parts thereof. This type of equipment (apparatus) can be used in a fixed, mobile or a portable application. companding: A method of audio

45、 processing that compresses the audio dynamic range before transmission and then provides matching expansion of the signal in the receiver. Used to improve the audio performance in the RF link. 3.2 Abbreviations EUT Equipment Under Test. 4 General test conditions 4.1 Test conditions The equipment sh

46、all be tested under normal test conditions contained in the relevant product and basic standards or in the information accompanying the equipment, which are within the manufacturers declared range of humidity, temperature and supply voltage. The test conditions shall be recorded in the test report.

47、For the purpose of test, body worn or hand held transmitters shall be mounted on a non-conductive stand at least 0,8 m from any conducting surface. The EUT and any other equipment required for the evaluation shall be connected in a manner typical of normal intended use. Whenever the EUT is provided

48、with a detachable antenna, the EUT shall be tested with the antenna fitted in a manner typical of normal intended use. For immunity tests, if the equipment is of a category which permits it, a communications link shall be established at the start of the test and maintained during the test. Test modu

49、lation, test arrangement etc., as specified in this ETC, subclauses 4.2, 4.3, 4.4 and 4.5 shall apply and the conditions shall be as follows: - the transmitter shall be operated at its normal maximum output power modulated with a suitable test signal (see subclause 4.2); - for stand alone receivers or receivers of transceivers operating in the simplex mode, the wanted RF input signal, coupled to the receiver, shall be modulated with a suitable test signal (see subclause 4.4); _ ETSI ETS*300*445 96 m 3400855 00774b