ReferencenumberISO/IEC18000-7:2004(E)©ISO/IEC2004INTERNATIONALSTANDARDISO/IEC18000-7Firstedition2004-08-15Informationtechnology—Radiofrequencyidentificationforitemmanagement—Part7:Parametersforactiveairinterfacecommunicationsat433MHzTechnologiesdel'information—Identificationparradiofréquence(RFID)pourlagestiond'objets—Partie7:Paramètrespourlescommunicationsactivesd'uneinterfaced'airà433MHzCopyrightInternationalOrganizationforStandardizationReproducedbyIHSunderlicensewithISONotforResaleNoreproductionornetworkingpermittedwithoutlicensefromIHS--`,,,,,,-`-`,,`,,`,`,,`---ISO/IEC18000-7:2004(E)PDFdisclaimerThisPDFfilemaycontainembeddedtypefaces.InaccordancewithAdobe'slicensingpolicy,thisfilemaybeprintedorviewedbutshallnotbeeditedunlessthetypefaceswhichareembeddedarelicensedtoandinstalledonthecomputerperformingtheediting.Indownloadingthisfile,partiesacceptthereintheresponsibilityofnotinfringingAdobe'slicensingpolicy.TheISOCentralSecretariatacceptsnoliabilityinthisarea.AdobeisatrademarkofAdobeSystemsIncorporated.DetailsofthesoftwareproductsusedtocreatethisPDFfilecanbefoundintheGeneralInforelativetothefile;thePDF-creationparameterswereoptimizedforprinting.EverycarehasbeentakentoensurethatthefileissuitableforusebyISOmemberbodies.Intheunlikelyeventthataproblemrelatingtoitisfound,pleaseinformtheCentralSecretariatattheaddressgivenbelow.©ISO/IEC2004Allrightsreserved.Unlessotherwisespecified,nopartofthispublicationmaybereproducedorutilizedinanyformorbyanymeans,electronicormechanical,includingphotocopyingandmicrofilm,withoutpermissioninwritingfromeitherISOattheaddressbeloworISO'smemberbodyinthecountryoftherequester.ISOcopyrightofficeCasepostale56•CH-1211Geneva20Tel.+41227490111Fax+41227490947E-mailcopyright@iso.orgWeb©ISO/IEC2004–AllrightsreservedCopyrightInternationalOrganizationforStandardizationReproducedbyIHSunderlicensewithISONotforResaleNoreproductionornetworkingpermittedwithoutlicensefromIHS--`,,,,,,-`-`,,`,,`,`,,`---ISO/IEC18000-7:2004(E)©ISO/IEC2004–AllrightsreservediiiContentsPageForeword............................................................................................................................................................ivIntroduction........................................................................................................................................................v1Scope......................................................................................................................................................12Conformance.........................................................................................................................................13Normativereferences...........................................................................................................................14Termsanddefinitions...........................................................................................................................25Symbolsandabbreviatedterms..........................................................................................................26433,92MHzactivenarrowbandspecification.....................................................................................26.1Physicallayer........................................................................................................................................26.2DataLinklayer.......................................................................................................................................26.2.1General...................................................................................................................................................26.2.2Preamble................................................................................................................................................36.2.3Databyteformat....................................................................................................................................36.2.4CRCbytes..............................................................................................................................................36.2.5Packetendperiod.................................................................................................................................36.2.6Interrogatortotagmessageformat....................................................................................................36.2.7Tagtointerrogatormessageformat...................................................................................................56.2.8Tagcollectionandcollisionarbitration............................................................................................146.3PhysicalandMediaAccessControl(MAC)parameters.................................................................166.3.1Interrogatortotaglink........................................................................................................................166.3.2Tagtointerrogator