1、 IEC 62553 Edition 1.0 2012-11 INTERNATIONAL STANDARD Methods of measurement for digital network Performance characteristics of terrestrial digital multimedia transmission network IEC 62553:2012(E)colourinsideCopyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,downloaded on
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10、dition 1.0 2012-11 INTERNATIONAL STANDARD Methods of measurement for digital network Performance characteristics of terrestrial digital multimedia transmission network INTERNATIONAL ELECTROTECHNICAL COMMISSION XA ICS 33.170 PRICE CODE ISBN 978-2-83220-502-0 Registered trademark of the International
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12、ontrolled when printed.2 62553 IEC:2012(E)CONTENTS FOREWORD.5 1 Scope.7 2 Normative references.7 3 Terms and abbreviations.8 4 General conditions of measurement.9 4.1 Definitions and classifications of digital terrestrial TV transmission network.9 4.1.1 General.9 4.1.2 Network classification for tra
13、nsmitting frequencies.10 4.1.3 Network classification on useable contribution links for signal transport system between stations.11 4.2 Signal form.11 4.2.1 TS signal form.11 4.2.2 IF signal form.11 4.3 Test signals and auxiliary signals for measurement.11 4.3.1 Test signals.11 4.3.2 Auxiliary signa
14、ls for measurement.12 5 Methods of measurement for signal delay time.12 5.1 Scope.12 5.2 Definition of signal delay time.13 5.2.1 Delay time.13 5.2.2 Relative delay time difference.13 5.3 Direct/indirect measurement.13 5.3.1 General.13 5.3.2 Direct measurement system.14 5.3.3 Indirect measurement sy
15、stem.14 5.4 Measurement place.14 5.5 Classification of measurement system.15 6 Methods of measurement for performances of radio wave relay station.17 6.1 Scope.17 6.2 Measurement diagram and measurement items.17 6.2.1 General.17 6.2.2 Measurement diagram.17 6.2.3 Measurement items.18 6.3 Methods of
16、measurement.18 6.3.1 General.18 6.3.2 BER(case 2).19 6.3.3 Equivalent noise degradation(END).20 6.3.4 Amplitude frequency characteristics.21 6.3.5 Delay profile.22 6.3.6 Phase jitter.22 7 Methods of measurement for performances of signal quality improvement instrument used in radio wave relay station.24 7.1 General.24 7.2 Classification of signal quality improvement instrument.25 7.3 Measurement diagram and measurement condition.25 7.4 Common measurement items.25 Copyrighted material licensed
