1、ETSI TECHNICAL REPORT ETR 027 September 1991 UDC: Key words: Radio Equipment and Systems Methods of measurement for mobile radio equipment ETSI European Telecommunications Standards Institute ETSI Secretariat: B.P.152 . F - 06561 Valbonne Cedex . France TP. + 33 92 94 42 O0 TF. + 33 93 65 47 16 Tx.
2、47 O0 40 F 0 European Telecommunications Standards Institute 1991. All rights reserved. No part may be reproduced or used except as authorised by contract or other written permission. The copyright and the foregoing restriction on reproduction and use extend to all media in which the information may
3、 be embodied. Page 2 ETR 027:September 199 1 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 “ETSI Standards Management Dept.“ at the address
4、shown on the title page. W 3404583 OOb7OL1i 2TO Page 3 ETR 027:September 1991 Contents Foreword 1 Scope . Abbreviations and definitions 2.1 Abbreviations 2.2 Definitions 2.2.1 Audio frequency load . 2.2.2 Audio frequency termination . 2.2.3 Band-stop filter (for the SINA0 meter) 2.2.4 Combining netw
5、ork 2.2.5 Duplex filter . 2.2.6 Extreme test conditions 2.2.7 Intermittent operation . 2.2.8 Limited Frequency Range . 2.2.9 Maximum permissible frequency deviation 2.2.10 Nominal frequency . 2.2.1 1 Nominal mains voltage 2.2.12 Normal test conditions 2.2.1 3 Normal deviation 2.2.14 Psophometric wei
6、ghting network 2.2.1 5 Rated audio output power 2.2.16 Rated radio frequency output power . 2.2.17 Testload . 2.2.1 8 Test modulation . 2.2.19 Trigger device 2.2.20 Upper specified audio frequency limit . 2.2.21 Wanted signal level 3 General arrangements . 3.1 Power measuring receiver 3.1.1 Descript
7、ion 3.1.2 IFfilter 3.1.3 Oscillator and amplifier 3.1.4 Attenuation indicator . 3.1.5 Level indicators . 3.1.5.1 Rms level indicator . 3.1.5.2 Peak level indicator . 3.2 Test Discriminator . 3.3 Test Sites . 3.3.1 Open Air Test Site . 3.3.1.1 Description . 3.3.1.2 Calibration 3.3.2 Anechoic chamber
8、. 3.3.2.1 General 3.3.2.2 Description 3.3.2.3 Influence of parasitic reflections 3.3.2.4 Calibration and Mode of use . 3.3.3 Stripline Arrangement . 3.3.3.1 General 9 11 11 11 12 12 12 12 12 12 12 13 13 14 14 14 14 15 15 15 15 15 15 16 16 16 17 17 17 17 20 20 20 20 20 20 21 21 21 21 22 22 23 23 23 2
9、6 26 3404583 0067012 137 = Page 4 ETR 027:September 1991 3.3.4 3.3.3.2 Description . 26 3.3.3.3 Calibration 26 3.3.3.4 Mode of use 26 Indoor test site 26 3.3.4.1 Description . 26 3.3.4.2 Test for parasitic reflections 27 3.3.4.3 Calibration and mode of use 28 3.4 Standard Position . 28 3.5 Acoustic
10、coupler . 29 3.5.2 Description . 29 3.5.3 Calibration . 30 3.6 Test Antenna . 30 3.7 Substitution Antenna 30 3.8 Test Fixture 31 3.8.1 Description . 31 3.8.2 Calibration . 31 3.5.1 General . 29 3.5.3.1 Measuring arrangement for calibration . 30 3.8.2.1 Measuring Arrangement for calibration . 32 3.8.
11、3 Mode of use 33 4.2.4 4.2.5 4.2.6 4.2.7 4.2.8 4.2.9 4 Conducted Measurements . 33 4.1 General . 33 4.2 Transmitter . 34 4.2.1 Frequency error 34 4.2.1.1 Definition 34 4.2.1.2 Method of measurement 34 4.2.2 Carrier power . 34 4.2.2.1 Definition 34 4.2.2.2 Method of measurement 34 4.2.3 Adjacent chan
12、nel power 35 4.2.3.1 Definition 35 4.2.3.2 Method of measurement 35 Conducted spurious emissions 36 4.2.4.1 Definition 36 4.2.4.2 Method of measurement 36 Intermodulation attenuation 37 4.2.5.1 Definition 37 4.2.5.2 Method of measurement 38 Attack time 39 4.2.6.1 Definition 39 4.2.6.2 Method of meas
13、urement 40 Release time 40 4.2.7.1 Definition 40 4.2.7.2 Method of measurement 41 Transient adjacent channel power 41 4.2.8.1 Definition 41 4.2.8.2 Method of measurement 41 4.2.8.2.1 Preliminary verification Nol 41 4.2.8.2.2 Preliminary verification NO2 42 4.2.8.2.3 Measurement . 42 Frequency deviat
14、ion . 43 4.2.9.1 Definition 43 4.2.9.2 Method of measurement 43 4.2.9.2.1 Analogue signals within the audio bandwidth . 43 4.2.9.2.2 Analogue signals above the audio bandwidth . 43 3404583 O067033 073 Page 5 ETR 027:September 1991 4.2.1 O 4.2.1 1 4.2.12 4.2.1 3 4.2.14 4.3.2 4.3.3 4.3.4 4.2.9.2.3 Dig
15、ital signals Limiter characteristic for analogue speech 4.2.10.1 Definition 4.2.1 0.2 Method of measurement . Acoustic sensitivity of modulator for analogue speech 4.2.1 1.1 Definition . 4.2.1 1.2 Method of measurement . Audio frequency response for analogue speech 4.2.12.1 Definition . 4.2.1 2.2 Me
16、thod of measurement . Harmonic distortion for analogue speech . 4.2.13.1 Definition . 4.2.13.2 Method of measurement . Residual modulation for analogue speech 4.2.14.1 Definition . 4.3 Receiver 4.3.1 Measured usable sensitivity . 4.3.1.1 Measured usable sensitivity for analogue speech . 4.3.1.1.1 De
17、finition . 4.3.1.1.2 Method of measurement . 4.3.1.2 Measured usable sensitivity for bit stream 4.3.1.2.1 Definition . 4.3.1.2.2 Method of measurement . 4.3.1.3 Measured usable sensitivity for messages 4.3.1.3.1 Definition . 4.3.1.3.2 Method of measurement . Co-channel rejection 4.3.2.1 Co-channel r
18、ejection for analogue speech 4.3.2.1.1 Definition . 4.3.2.1.2 Method of measurement . 4.3.2.2 Co-channel rejection for bit stream 4.3.2.2.1 Definition . 4.3.2.2.2 Method of measurement . 4.3.2.3 Co-channel rejection for messages . 4.3.2.3.1 Definition . 4.3.2.3.2 Method of measurement . 4.3.3.1 Adja
19、cent channel selectivity for analogue speech . 4.3.3.3.1 Definition . 4.3.3.1.2 Method of measurement . 4.3.3.2 Adjacent channel selectivity for bit stream . 4.3.3.2.1 Definition . 4.3.3.2.2 Method of measurement . 4.3.3.3 Adjacent channel selectivity for messages 4.3.3.3.1 Definition . 4.3.3.3.2 Me
20、thod of measurement . 4.3.4.1 Spurious response immunity for analogue speech . 4.3.4.1.1 Definition . 4.3.4.1.2 Method of measurement . 4.3.4.2 Spurious response immunity for bit stream . 4.3.4.2.1 Definition . 4.3.4.2.2 Method of measurement . 4.3.4.3 Spurious response immunity for messages 4.3.4.3
21、.1 Definition . 4.3.4.3.2 Method of measurement . Adjacent channel selectivity Spurious response immunity 44 44 44 44 45 45 45 45 45 46 46 46 46 47 47 48 48 48 48 48 49 49 49 49 49 50 50 50 50 51 51 51 52 52 52 53 54 54 54 54 55 55 55 56 56 56 57 57 57 57 58 58 59 59 60 58 = 3404583 00b7014 TOT Page
22、 6 ETR 027:September 199 1 4.3.6 4.3.7 4.3.5 Intermodulation immunity . 61 4.3.5.1.1 Definition 61 4.3.5.1.2 Method of measurement 61 4.3.5.2.1 Definition 62 4.3.5.2.2 Method of measurement 62 4.3.5.3.1 Definition . 63 Blocking immunity or desensitisation 65 speech 65 4.3.5.1 Intermodulation immunit
23、y for analogue speech 61 4.3.5.2 Intermodulation immunity for bit stream 62 4.3.5.3 Intermodulation immunity for messages 63 4.3.5.3.2 Method of measurement 64 4.3.6.1 Blocking immunity or desensitisation for analogue 4.3.6.1 . 1 Definition 65 4.3.6.1.2 Method of measurement 65 4.3.6.2 Blocking immu
24、nity for bit stream . 66 4.3.6.2.1 Definition 66 4.3.6.2.2 Method of measurement 66 4.3.6.3 Blocking immunity for messages . 67 4.3.6.3.1 Definition 67 4.3.6.3.2 Method of measurement 67 4.3.7.1 Definition 68 4.3.7.2 Method of measurement 68 4.3.8 Amplitude characteristic for analogue speech . 69 4.
25、3.8.1 Definition 69 4.3.8.2 Method of measurement 69 4.3.9 Audio frequency response for analogue speech . 70 4.3.9.1 Definition 70 4.3.9.2 Method of measurement 70 4.3.10.1 Definition 70 4.3.10.2 Method of measurement 71 4.3.1 1.1 Definition 72 4.3.1 1.2 Method of measurement 72 4.3.12.1 Multipath s
26、ensitivity for bit stream 72 Conducted spurious components 68 4.3.1 O Harmonic distortion for analogue speech 70 4.3.1 1 Hum and noise for analogue speech . 72 4.3.1 2 Multipath sensitivity . 72 4.3.12.1 -1 Definition . 72 4.3.1 2.1.2 Method of measurements . 73 4.3.1 2.2.1 Definition . 74 4.3.1 2.2
27、.2 Method of measurements . 74 4.3.13 Bit error ratio . 75 4.3.13.1 Definition 75 4.3.13.2 Method of measurement 75 4.3.14 Opening delay for data . 75 4.3.1 4.1 Definition 75 4.4 Duplex operation . 76 4.4.1 Spurious response immunity (duplex) 76 4.4.1.1 Spurious response immunity (duplex) for analog
28、ue speech 76 4.4.1 -1.1 Definition 76 4.4.1.1.2 Method of measurement 77 4.4.1.2 Spurious response immunity for bit stream (duplex) . 79 4.3.1 2.2 Multipath sensitivity for messages . 74 4.3.14.2 Method of measurement 76 Page 7 ETR 027:September 1991 4.4.2 4.4.1 -2.1 Definition . 79 4.4.1.2.2 Method
29、 of measurement . 79 4.4.1 -3 81 4.4.1.3.1 Definition . 81 4.4.1.3.2 Method of measurement . 81 Desensitisation (duplex) 84 4.4.2.1.1 Definition . 84 4.4.2.1.2 Method of measurement . 84 4.4.2.2.1 Definition . 85 4.4.2.2.2 Method of measurement . 86 4.4.2.3.1 Definition . 87 4.4.2.3.2 Method of meas
30、urement . 88 Spurious response immunity for messages (duplex) . . 4.4.2.1 Desensitisation for analogue speech (duplex) 84 4.4.2.2 Desensitisation for bit stream (duplex) 85 4.4.2.3 Desensitisation for messages (duplex) . 87 5 Radiated measurements . 5.1 General 5.2 Transmitter 5.2.1 Maximum carrier
31、radiated power 5.2.1.1 Definition . 5.2.1.2 Method of measurement . 5.2.2 Radiated spurious emissions . 5.2.2.1 Definition . 5.2.2.2 Method of measurement . 5.2.3 Cabinet radiation 5.2.3.1 Definition . 5.2.3.2 Method of measurement . 5.3 Receiver 5.3.1 Average measured usable sensivity expressed as
32、field strength 5.3.1.1 Average measured usable sensitivity expressed as field strength for analogue speech 5.3.1.1.1 Definition . 5.3.1.1.2 Method of measurement . 5.3.1.2 Average measured usable sensitivity expressed as field strength for bit stream 5.3.1.2.1 Definition . 5.3.1.2.2 Method of measur
33、ement . 5.3.1.3 Average measured usable sensitivity expressed as field strength for messages . 5.3.1.3.1 Definition . 5.3.1.3.2 Method of measurement . Maximum measured usable sensitivity expressed as field strength . . 5.3.2.1 Maximum measured usable sensitivity expressed as field strength for anal
34、ogue speech 5.3.2.1.1 Definition . 5.3.2.1.2 Method of measurement . 5.3.2.2 Maximum measured usable sensitivity expressed as field strength for bit stream 5.3.2.2.1 Method of measurement . 5.3.2.3 Maximum measured usable sensitivity expressed as field strength for messages . Definition . 5.3.2.3.1
35、5.3.2.3.2 Method of measurement . 5.3.3 Radiated spurious components . 5.3.3.1 Definition . 5.3.2 89 89 90 90 90 90 92 92 92 94 94 95 95 95 95 95 96 99 99 100 102 102 102 104 104 104 104 104 104 104 104 105 104 105 Page 8 ETR 027:September 1991 5.3.3.2 Method of measurement . 105 5.3.4 Cabinet radia
36、tion 106 5.3.4.1 Definition . 106 Spurious response immunity to radiated fields . 107 5.3.4.2 Method of measurement . 107 5.3.5 5.3.5.1 5.3.5.1.1 5.3.5.1.2 5.3.5.2 5.3.5.2.1 5.3.5.2.2 5.3.5.3 5.3.5.3.1 5.3.5.3.2 Annex A (informative) . 340Li583 0067036 882 Spurious response immunity to radiated fiel
37、ds for analogue speech Definition . Method of measurement . Spurious response immunity to radiated fields for bit stream . Definition . Method of measurement . Spurious response immunity to radiated fields for messages . Definition . Method of measurement . 107 107 108 109 109 110 111 111 112 114 34
38、04583 00670117 719 Page 9 ETR 027:September 1991 Foreword This ETSI Technical Report (ETRI has been prepared by the Radio Equipment and Systems (RES) Technical Committee of the European Telecommunications Standards Institute (ETSI). ETRs are informative documents resulting from ETSI studies, but whi
39、ch are not suitable for adaption as formal standards (ETSs or I-ETSs). It contains several methods of measurement which may be superseded by specific standards covering specific applications. It is based upon a number of CEPT Recommendations including T/R 24-01 and T/R 34-01. The methods of measurem
40、ent have been thoroughly revised and harmonised. However, the methods of measurement for radiated measurements presented in Clauses 3.3 and 5 are not definitive over issues of ground plane characteristics, antenna separation, antenna heights, antenna types, cable positions and most important of all,
41、 site calibration. Further work is being carried out. The corresponding results will be incorporated in a future release of this report. m 3404583 0067038 655 Page 11 ETR 027:September 1991 I Scope These methods of measurement are intended for use in determining the characteristics considered necess
42、ary to make the best use of the available frequencies in the mobile radio service. The intention is to give guidance to manufacturers and type testing authorities in order that common methods are adopted so that mutual acceptance of test results becomes possible. The equipment parameter limits can b
43、e found in the relevant ETS. To this end the philosophy has been adopted that for any specific test only one method of measurement should be described to assist in the maintenance of uniformity. The methods apply to constant envelope frequency modulated or phase modulated systems as chosen by each a
44、dministration operating on radio frequencies between 25 MHz and 1 O00 MHz and with channel separations of 12.5 kHz, 20 kHz and 25 kHz. Methods are described which are applicable to equipments capable of transmission and reception of analogue speech, bit stream and messages. For data, when possible,
45、bit stream measurements shall be preferred to messages. Included are methods of measurement for equipments fitted with antenna sockets, temporary 50 2 connectors and integral antenna. Wherever possible, if the characteristics are not expected to be affected, the measurements shall be made by use of
46、a direct connection to the equipment under test (antenna socket or temporary 50 !J connector) as stated in each EIS, in order to ensure that the measurement uncertainties are minimised. In the methods of measurement any different requirements are given for the different radio frequency bands, channe
47、l separations, etc., where appropriate. A section defining terms used in this document not in common usage is to be found at Clause 2. These terms appear in the text in italics. In Clause 3 reference is made to general arrangements of test equipment, test fixtures, test sites etc. When reference is
48、made in the text to a particular feature in this section then it appears in bold type. 2 Abbreviations and definitions 2.1 Abbreviations AF : Audio frequency CCITT: International Telegraph and Telephone Consultative Committee D: Distance in metres from equipment under test to the point at which meas
49、urements are made emf: Electromotive force ETS: European Telecommunication Standard IF: Intermediate frequency NaCI: Sodium chloride RF: Radio frequency rms: Root mean square Rx: Receiver SINAD: Signal plus noise and distortion divided by noise plus distortion Previous page is blank Page 12 ETR 027:September 1991 Tx: Transmitter VSWR: Voltage standing wave ratio 2.2 Definitions 2.2.1 Audio frequency toad The audio frequency load is normally a resistor of sufficient power rating to accept the maximum audio output power from the equipment under test. The value of the resistor sh
