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    ANSI C63.7-2005 Guide for Construction of Open-Area Test Sites for Performing Radiated Emission Measurement《进行辐射测量的露天测试点的施工指南》.pdf

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    ANSI C63.7-2005 Guide for Construction of Open-Area Test Sites for Performing Radiated Emission Measurement《进行辐射测量的露天测试点的施工指南》.pdf

    1、ANSI C63.7-2005(Revision of ANSI C63.7-1992)American National Standard Guide for Construction of Open-AreaTest Sites for Performing RadiatedEmission MeasurementsI E E E3 Park Avenue New York, NY 10016-5997, USA7 April 2006Accredited by the American National Standards InstituteSponsored by theAccredi

    2、ted Standards Committee on Electromagnetic Compatibility, C63Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright The Institute of Electrical and Elect

    3、ronics Engineers, Inc. Provided by IHS under license with IEEENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ANSI C63.7-2005 (Revision of ANSI C63.7-1992) American National Standard Guide for Construction of Open-Area Test Sites for Performing Radiated Emission Me

    4、asurements Accredited Standards Committee on Electromagnetic Compatibility, C63 accredited by the American National Standards Institute Secretariat Institute of Electrical and Electronic Engineers, Inc. Approved 7 October 2005 American National Standards Institute Abstract: Information that is usefu

    5、l in constructing an open-area test site used to perform radiated emission measurements in the frequency range of 30 MHz to 1000 MHz is provided. Final validity of the test site can only be made by performing site attenuation measurements as described in ANSI C63.4-2003. Keywords: emission measureme

    6、nt, open-area test sites, radiated emission measurement _ The Institute of Electrical and Electronics Engineers, Inc. 3 Park Avenue, New York, NY 10016-5997, USA Copyright 2006 by the Institute of Electrical and Electronics Engineers, Inc. All rights reserved. Published 7 April 2006. Printed in the

    7、United States of America. Print: ISBN 0-7381-4907-1 SH95518 PDF: ISBN 0-7381-4908-X SS95519 No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. Copyright The Institute of Electrical and Elec

    8、tronics Engineers, Inc. Provided by IHS under license with IEEENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-American National Standard An American National Standard implies a consensus of those substantially concerned with its scope and provisions. An American N

    9、ational Standard is intended as a guide to aid the manufacturer, the consumer, and the general public. The existence of an American National Standard does not in any respect preclude anyone, whether he has approved the standard or not, from manufacturing, marketing, purchasing, or using products, pr

    10、ocesses, or procedures not conforming to the standard. American National Standards are subject to periodic review and users are cautioned to obtain the latest editions. CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of the American National St

    11、andards Institute require that action be taken to reaffirm, revise, or withdraw this standard no later than five years from the date of publication. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Instit

    12、ute. Authorization to photocopy portions of any individual standard for internal or personal use is granted by the Institute of Electrical and Electronics Engineers, Inc., provided that the appropriate fee is paid to Copyright Clearance Center. To arrange for payment of licensing fee, please contact

    13、 Copyright Clearance Center, Customer Service, 222 Rosewood Drive, Danvers, MA 01923 USA; (978) 750-8400. Permission to photocopy portions of any individual standard for educational classroom use can also be obtained through the Copyright Clearance Center. Copyright The Institute of Electrical and E

    14、lectronics Engineers, Inc. Provided by IHS under license with IEEENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Introduction This introduction is not part of ANSI C63.7-2005, American National Standard Guide for Construction of Open-Area Test Sites for Performing

    15、 Radiated Emission Measurements. ANSI C63.4, American National Standard Methods of Measurement of Radio-Noise Emissions from Low-Voltage Electrical and Electronic Equipment in the Range of 9 kHz to 40 GHz, has undergone several revisions since the original document covering methods of measurement wa

    16、s produced in 1940. While many improvements were made in this standard up to the current version published in early 2004, the reproducibility of measurements or radiated interference from one open-area test site (OATS) to another had not been completely satisfactory. In 1982, a concerted effort was

    17、organized in Subcommittee One of Accredited Standards Committee C63, to determine how the OATS technique could be improved. Evidence showed that the variability at the time was due, in part, to inadequate: a) control of the site ground plane conductivity, its flatness, site enclosure effects, and ce

    18、rtain other characteristics; b) accounting for antenna factors, associated cabling, and balun and equipment under test (EUT) characteristics; and c) consideration of mutual coupling effects between the EUT and the receiving antennas and their images in the conducting ground plane. Accordingly, after

    19、 over five years of deliberations and investigations, ANSI C63.4 was revised. In the same year, ANSI C63.5 (American National Standard for Radiated Emission Measurements in Electromagnetic Interference (EMI) ControlCalibration of Antennas), ANSI C63.6 (American National Standard for Open Area Test S

    20、ite MeasurementsGuide for Computation of Errors), and ANSI C63.7 (American National Standard Guide for Construction of Open Areas Test Sties for Performing Radiated Emission, Measurements) were first published. All of this occurred in 1988. In 1992, the next edition of ANSI C63.7 was published. That

    21、 update included improvements to the text resulting from experience testing at an OATS, which even today serves as the reference test site for performing radiated emission measurements. These measurements continue to be used to determine product compliance to radiated emission limits, although there

    22、 are other test facilities that are used such as semianechoic chambers, which replicate an OATS as both have conductive ground planes and both are validated using the normalized site attenuation technique contained in ANSI C63.4. This edition of ANSI C63.7 further improves on the 1992 edition by cla

    23、rifying and elaborating how: a) cables from the receiving antenna should be routed; b) the metal conducting ground plane should be treated when exposed to the weather; c) choices can be made for the ground plane material; and d) the slope of the ground plane affects the test site. The following memb

    24、ers of the C63 Committee served as task group leaders on this revision: Donald N. Heirman Edwin L. Bronaugh iii Copyright 2006 IEEE. All rights reserved. Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEENot for ResaleNo reproduction or netw

    25、orking permitted without license from IHS-,-,-Participants At the time this guide was published, the Accredited Standards Committee on Electromagnetic Compatibility, C63, had the following membership: Ralph M. Showers, Chair Donald N. Heirman, Vice Chair Robert L. Pritchard, IEEE Secretariat Organiz

    26、ation Represented Name of Representative Alliance for Telecom Industry Solutions (ATIS) . Chrys Chrysanthou James Turner (Alt.) American Council of Independent Laboratories (ACIL) Michael F. Violette William Stumpf (Alt.) American Radio Relay League (ARRL). Dennis Bodson Edward F. Hare (Alt.) Cisco

    27、Systems. Werner Schaefer Curtis-Straus LLC Jon Curtis Jonathan Stewart (Alt.) Dell Inc. Barry R. Wallen Richard Worley (Alt.) ETS-Lindgren. Michael Foegelle Zhong Chen (Alt.) Federal Communications Commission (FCC) William Hurst Food and Drug Administration (FDA) . Jon P. Casamento Jeffrey L. Silber

    28、berg (Alt.) Hewlett-Packard Company. Kenneth Hall Colin Brench (Alt.) Information Technology Industry Council (ITIC) John Hirvela Joshua Rosenberg (Alt.) Institute of Electrical and Electronics Engineers, Inc. (IEEE) Donald N. Heirman IEEE-EMCS . Stephen Berger Donald Sweeney (Alt.) Lucent Technolog

    29、ies Dheena. Moogilan National Institute of Standards and Technology. Dennis Camell Society of Automotive Engineers (SAE) Poul Andersen TUV-America, Inc David Zimmerman Joel Schneider (Alt.) Underwriters Laboratories Michael Windler Robert Delisi (Alt.) U.S. Dept. of DefenseJoint Spectrum Center . Ma

    30、rcus Shellman Joseph Snyder (Alt.) U.S. Dept. of the NavySPAWAR. David Southworth Members-at-Large Robert Hofmann Daniel HoolihanWarren Kesselman*John LichtigHerbert Mertel*Ralph M. Showers Norman Violette*Member Emeritus iii Copyright 2006 IEEE. All rights reserved. Copyright The Institute of Elect

    31、rical and Electronics Engineers, Inc. Provided by IHS under license with IEEENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Contents 1. Scope 1 2. Normative references 1 3. Definitions 2 4. General considerations . 2 5. Obstruction-free area 2 6. Ground plane 5 6.

    32、1 Size and shape of ground plane . 5 6.2 Smoothness of ground plane 5 6.3 Ground-plane material. 6 6.4 Ground-plane earthing. 7 7. Measurement facilities 7 7.1 Turntables 7 7.2 Services to EUT. 7 7.3 Receiving antenna mast installation 8 7.4 Location of personnel and radio-noise meter. 8 7.5 Service

    33、s to the radio-noise meter. 9 8. Weather-protection enclosure. 9 8.1 Construction recommendations . 9 8.2 Materials and fasteners 9 8.3 Internal arrangements 10 8.4 Size 10 8.5 Uniformity with time and weather. 10 8.6 Other considerations 10 Annex A (informative) Fresnel ellipse . 11 Annex B (inform

    34、ative) The Rayleigh criterion. 13 Annex C (informative) Bibliography 15 iv Copyright 2006 IEEE. All rights reserved. Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEENot for ResaleNo reproduction or networking permitted without license from

    35、 IHS-,-,-Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1 Copyright 2006 IEEE. All rights reserved. American National Standard Guide for Construction of Op

    36、en-Area Test Sites for Performing Radiated Emission Measurements 1. Scope This guide provides information that is useful in constructing an open-area test site (OATS) used to perform radiated emission measurements in the frequency range of 30 MHz to 1000 MHz. Final validity of the test site can only

    37、 be made by performing site attenuation measurements described in ANSI C63.4-2003,1section 5.4.6. 2. Normative references The following standards should be consulted when validating an OATS. ANSI C63.4-2003, American National Standard Methods of Measurement of Radio-Noise Emissions from Low-Voltage

    38、Electrical and Electronic Equipment in the Range of 9 kHz to 40 GHz.2ANSI C63.5-2006, American National Standard for Calibration of Antennas Used for Radiated Emission Measurements in Electromagnetic Interference (EMI) Control. ANSI C63.14-1998, American National Standard Dictionary for Technologies

    39、 of Electromagnetic Compatibility (EMC), Electromagnetic Pulse (EMP), and Electrostatic Discharge (ESD) (Dictionary of EMC/EMP/ESD Terms and Definitions). 1For information on references, see Clause 2. 2ANSI C63 publications are available from the Institute of Electrical and Electronics Engineers, 44

    40、5 Hoes Lane, P.O. Box 1331, Piscataway, NJ 08855-1331, USA (http:/standards.ieee.org/), or from the Sales Department, American National Standards Institute, 11 West 42nd Street, New York, NY 10036, USA (http:/www.ansi.org/). Copyright The Institute of Electrical and Electronics Engineers, Inc. Provi

    41、ded by IHS under license with IEEENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ANSI C63.7-2005 GUIDE FOR CONSTRUCTION OF OPEN-AREA TEST SITES FOR PERFORMING RADIATED EMISSION MEASUREMENTS 3.4.5.Definitions For the purposes of this guide, see ANSI C63.14-1998. Ge

    42、neral considerations Section 5.1 through 5.4.5 of ANSI C63.4-2003 list general conditions for test sites and, in particular, OATSs. To summarize, radiated emission tests can be performed in an open, flat area of cleared, level terrain. Alternate sites might include a raised platform; rooftop site; a

    43、n open area such as a large factory floor, relatively clear of obstructions that could adversely affect the measurements; or an effectively absorber-lined shielded room that is also free of undesired reflections from the walls and ceiling. The preferred test site is an OATS, which is internationally

    44、 recognized as the standard for making radiated emission measurements (see B4).3Such OATSs should be void of buildings, electric lines, fences, trees, etc., and free of underground cables, pipelines, etc., except when using a metallic ground plane that isolates the adverse effects of such undergroun

    45、d metallic objects. Services to operate the equipment under test (EUT) and the cabling to the receive antenna should be trenched into the earth if no metallic ground plane is used. The depth of the trench should be such that the cabling will not significantly affect the normalized site attenuation m

    46、easurement. Clause 5 through Clause 8 describe key recommended characteristics of the test site, the ground plane, instrumentation and EUT services, and all-weather covers. These recommendations should be used to ensure adequate test sites. Adequacy is determined by performing normalized site attenu

    47、ation measurements described in ANSI C63.4-2003, section 5.4.6. Obstruction-free area An obstruction-free area surrounding the EUT and field strength measuring antenna is required. The obstruction-free area should be free from significant scatterers of electromagnetic fields, and should be large eno

    48、ugh so that scatterers outside the obstruction-free area will have little effect on the fields measured by the field-strength measuring antenna. The definitive test of the obstruction-free area is to perform normalized site attenuation measurements indicated in ANSI C63.4-2003. Since the magnitude of the field scattered from an obstruction depends on many factors (size of the obstruction, distance from the EUT and receiving antenna, orientation with respect to the EUT and receiving antenna, conductivity and permittivity of the obstruction, frequency, etc.), it is impossible to specify an ob


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