Product Code:SAE ARP958
Title:Electromagnetic Interference Measurement Antennas; Standard Calibration Method
Issuing Committee:Ae-4 Electromagnetic Environmental Effects (E3) Committee
Scope: This SAE Aerospace Recommended Practice (ARP) outlines a standard method for the checkout and calibration of electromagnetic interference measurement antennas. Its primary application is for use when measuring a source 1 m from the antenna in a shield room versus a source at a greater distance (far field). This is the typical distance used in performing military EMC testing. Thus, this is a method of calibration. Shield room characteristics are not considered. It does not address an unknown distributed source. Yet it is close to reality since it is based on another antenna that represents a distributed source. This document presents a technique to determine antenna factors for antennas used primarily in performing measurements in accordance with 2.1 and 2.2. The purpose of Revision B is to include the calibration of other antennas, such as small loop antennas that are also specified for use in these same references. Revision D includes a specific procedure for loop antennas that are separated by 1 m from the device under test. The Scope of Revision E is as follows: revision of main calibration method; update of process to reflect modern test equipment (i.e., network analyzers); inclusion of measurement uncertainty estimates; and resolution of conflicts between main method and alternative method suggested in Appendix C
Rationale: This SAE Aerospace Recommended Practice (ARP) outlines a standard method for the checkout and calibration of electromagnetic interference measurement antennas. Its primary application is for use when measuring a source 1 m from the antenna in a shield room versus a source at a greater distance (far field). This is the typical distance used in performing military EMC testing. Thus, this is a method of calibration. Shield room characteristics are not considered. It does not address an unknown distributed source. Yet it is close to reality since it is based on another antenna that represents a distributed source. This document presents a technique to determine antenna factors for antennas used primarily in performing measurements in accordance with 2.1 and 2.2. The purpose of Revision B is to include the calibration of other antennas, such as small loop antennas that are also specified for use in these same references. Revision D includes a specific procedure for loop antennas that are separated by 1 m from the device under test. The Scope of Revision E is as follows: revision of main calibration method; update of process to reflect modern test equipment (i.e., network analyzers); inclusion of measurement uncertainty estimates; and resolution of conflicts between main method and alternative method suggested in Appendix C【英文标准名称】:Cableddistributionsystemsfortelevisionandsoundsignals-Part12:Electromagneticcompatibilityofsystems
【原文标准名称】:电视和声音信号用电缆分配系统第12部分：系统的电磁兼容性
【标准号】:IEC60728-12-2001
【标准状态】:现行
【国别】:国际
【发布日期】:2001-02
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/TC100
【标准类型】:()
【标准水平】:()
【中文主题词】:电信;电缆分布系统;电视传输;声音广播;广播;有限电视系统;有限网络;电气工程;定义;定义;电磁兼容性;电磁兼容性
【英文主题词】:
【摘要】:ThispartofIEC60728appliestotheradiationcharacteristicsandimmunitytoelectromagneticdisturbanceofcablenetworksfortelevisionsignals,soundsignalsandinteractiveservicesandcoversthefrequencyrange0,15MHzto3,0GHz.ThisstandardspecifiesEMCperformancerequirementsandlaysdownthemethodsofmeasurement.Cablenetworksbeyondthenetworkoutlets(e.g.receiverleads,insimplestterms)whichbeginatthenetworkoutletandatthesubscriber'sterminalequipmentshallcomplywiththeserecommendationsprovidedthatnootherspecificprovisionsapply.Tominimisetheriskofinterferencetootherradioservicescausedbypossibleradiationfromacablenetworkandtolimitthepossiblepenetrationofexternalsignalswhichmayinterferewiththeoperationofanetwork,itisnecessarynotonlytouseequipmentwhichsatisfiestherequirementofIEC60728-2regardinglimitsofradiationandofimmunitytoexternalfields,but,also,toensuretheintegrityofallcableconnectionsoneachitemofactiveorpassivecablenetworkequipment.Cablenetworksemployingcoaxialcablescanbeasourceofinterferencetoawiderangeofservicesthatutilisetheradiofrequencyspectrum.Theseincludenotonlyemergencyservices,safetyoflife,broadcasting,aeronauticalandradionavigationservicesbutalsolandmobile,amateurandcellularradioservices.Asexistingandplannedradioservicesneedtobeprotected,radiationlimitsspecifiedforcablednetworksshouldbecompliedwith.Additionalprotectionforcertainservicesmayberequiredbynationalregulations.
【中国标准分类号】:K13
【国际标准分类号】:33_060_40;33_100_20
【页数】:19P;A4
【正文语种】:英语