1、INTERNATIONALSTANDARDIEC60728-2First edition2002-10Cabled distribution systems for televisionand sound signals Part 2:Electromagnetic compatibilityfor equipmentReference numberIEC 60728-2:2002(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY
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8、22 919 02 11Fax:+41 22 919 03 00LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.INTERNATIONALSTANDARDIEC60728-2First edition2002-10Cabled distribution systems for televisionand sound signals Part 2:Electromagnetic compatibilityfor equi
9、pment IEC 2002 Copyright-all rights reservedNo part of this publication may be reproduced or utilized in any form or by any means,electronic ormechanical,including photocopying and microfilm,without permission in writing from the publisher.International Electrotechnical Commission,3,rue de Varemb,PO
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11、ERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 60728-2 IEC:2002(E)CONTENTSFOREWORD.4INTRODUCTION.51Scope.62Normative references.63Terms,definitions,symbols and abbreviations.83.1Terms and definitions.83.2Symbols.123.3Abbreviations.124Methods of measurements.134.1Disturbance voltage
12、s from equipment.134.2Radiation from active equipment.144.3Immunity of active equipment.204.4Screening effectiveness of passive equipment.274.5Electrostatic discharge immunity test for active equipment.284.6Electrical fast transient/burst immunity test for a.c.power ports.295Performance requirements
13、.295.1Disturbance voltages from equipment.295.2Radiation.295.3Immunity of active equipment.305.4Screening effectiveness of passive equipment.315.5Electrostatic discharge immunity test for active equipment.325.6Electrical fast transient/burst immunity test for a.c.power ports.32Figure 1 Measurement s
14、et-up for radiation measurements in the 5 MHz to 30 MHzfrequency range using the“coupling unit”method.33Figure 2 Absorbing clamp method(30 MHz to 1 GHz).33Figure 3 Example of general measurement set-up.34Figure 4 Example of measurement set-up for measurements on the input port of anactive equipment.
15、34Figure 5 Measurement set-up for the“substitution”radiation method.35Figure 6 Measurement set-up for internal immunity test.36Figure 7 Levels of unwanted signals for the internal immunity of active equipment inBand I(47 MHz to 68 MHz).36Figure 8 Levels of unwanted signals for the internal immunity
16、of active equipment inBand II(87,5 MHz to 108 MHz).37Figure 9 Levels of unwanted signals for the internal immunity of active equipment inBand III(174 MHz to 230 MHz).37Figure 10 Levels of unwanted signals for the internal immunity of active equipmentin Band IV/V(470 MHz to 862 MHz).38Figure 11 Levels of wanted and unwanted signals for the internal immunity of FSSreceiving outdoor units.38Figure 12 Levels of wanted and unwanted signals for the internal immunity of BSSreceiving outdoor units.39Fig
