1、Designation:F305716Standard Test Method forElectromagnetic Shielding Effectiveness of Glazings1This standard is issued under the fixed designation F3057;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A numb
2、er in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers the determination of the elec-tromagnetic shielding effectiveness of glazings or glazingconfigurations.1.1.1 The intend
3、ed application of this test method is forglazings or glazing configurations to be evaluated for theirtransmittance or shielding capability to electromagnetic fre-quencies.1.1.2 This is a component test.It is not applicable to fullsystems such as walls,floors,ceilings,shielded racks,orwindow systems.
4、1.1.3 The intention of this test method is to standardize ameasurement procedure for glazings or glazing configurations,with and without coatings,films,interlayers,or otherenhancements,as single or insulating units at a standard sizeand when mounted in a standardized frame.1.1.4 This test method is
5、to provide a means of generatingdata for the glazing or glazing configuration infills that can beused by the consumer,designer,and system manufacturer tounderstand the capability and contribution of glazings orglazing configurations to a system used for ElectromagneticInterference(EMI)security.1.2 T
6、his test method is for use in the assessment of EMItransmittance for frequency ranges 100 kHz to 20 GHz.Specific test frequencies within these ranges are required.1.3 UnitsThe values stated in SI units are to be regardedas standard.No other units of measurement are included in thisstandard.1.4 This
7、standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.Some specifichazards statem
8、ents are given in Section 8 on Hazards.2.Referenced Documents2.1 ASTM Standards:2E631 Terminology of Building Constructions2.2 IEEE Standards:3IEEE Standard 2991977 IEEE Standard Method for Mea-suring the Effectiveness of Electromagnetic ShieldingEnclosuresIEEE STD C95.11991 IEEE Standard for Safety
9、 Levelswith Respect to Human Exposure to Radio FrequencyElectromagnetic Fields,3 kHz to 300 GHz2.3 OSHA Standard:4OSHA Regulation,29 CFR 1910 Department of Labor,July19922.4 ANSI Standard:5ANSI/NCSL Z540.3 Requirements for the Calibration ofMeasuring and Test Equipment2.5 ISO Standard:6ISO/IEC 17025
10、:2005 General Requirements for the Compe-tence of Testing and Calibration Laboratories3.Terminology3.1 Definitions:3.1.1 accredited independent testing laboratorytestinglaboratory accredited to perform the referenced testing proce-dures by a nationally recognized accrediting agency in accor-dance wi
11、th ISO/IEC 17025 and led by a test director.3.1.2 electric field measurementsthe attenuation providedby a glazing or glazing configuration is assessed by using alocal source to generate the electric field.The electric fieldmeasurement will be from 1 to 100 MHz.1This test method is under the jurisdic
12、tion ofASTM Committee F12 on SecuritySystems and Equipment and is the direct responsibility of Subcommittee F12.10 onSystems Products and Services.Current edition approved Feb.1,2016.Published March 2016.Originallyapproved in 2014.Last previous edition approved in 2014 as F3057 14.DOI:10.1520/F3057-
13、16.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from Institute of Electrical and Electronics Enginee
14、rs,Inc.(IEEE),445 Hoes Ln.,Piscataway,NJ 08854,http:/www.ieee.org.4Available from Occupational Safety and Health Administration(OSHA),200Constitution Ave.,Washington,DC 20210,http:/www.osha.gov.5Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http
15、:/www.ansi.org.6Available from International Organization for Standardization(ISO),1,ch.dela Voie-Creuse,CP 56,CH-1211 Geneva 20,Switzerland,http:/www.iso.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.3 magnetic field measuremen
16、tsthe attenuation pro-vided by a glazing or glazing configuration is assessed by usinga local source to generate the near field.The magnetic fieldmeasurements will be conducted from 100 kHz to 20 MHz.3.1.4 obscuration glazingglass that may transmit light butonly allows a limited amount of visual information to passthrough.3.1.5 plane wave measurementsthe attenuation providedby a glazing or glazing configuration is assessed by using alocally generated distant source or plane wave field.The planew
