Omron Automotive Electronics Korea OKA-230T Remote Keyless Entry System User Manual OKA 230T user s manual

Omron Automotive Electronics Korea Co., Ltd. Remote Keyless Entry System OKA 230T user s manual

User Manual

OMRONAUTOMOTIVEELECTRONICSKOREAOKA-230TTransmitter,RFKeylessEntrySystem
1.ConstitutionoftheRadioFrequencyKeylessEntrySystemforvehicleTheradiofrequencykeylessentryis asystemthatitcontrolslockingandunlockingthedoorandthetrunkbywirelessremotecontroller.Thissystemconsistsoftwocomponents.TheTRANSMITTERisadevicethattransmitsthesignalwhenthebuttonispressed. Thetransmissionsignal consistsofseveralsynchronouscodes,uniqueidentificationcode,securitycodeandfunctioncode.TheRECEIVERisfixedinsidethevehicle.Itworksintermittentlytopreventthebatteryexhaustion. Whenthereceiverdetectsthesynchronouscode,itrunscontinuouslytoreceivethesignalscompletely.Afterreceivingthesignal,thereceiverdecideswhichoperationwillbeperformed. The user can select the following operations by pressing thebutton oftheremotetransmitter.OPERATIONACTIONLOCK lockthedoorUNLOCK unlockthedoorTRUNK openthetrunkTransmitterf=307.9MHz-2-
LEDTRUNKUNLOCKLOCK2.OperationdescriptionREMOTETRANSMITTERYoucanlockandunlockyourvehiclewiththeremotetransmitter.LOCKWhenyoupushtheLOCKbutton,allthedoorswilllock.Youcannotlockanyofthedoorswiththeremotetransmitterifanydoorisopenorthekeyistheignitionswitch.UNLOCKWhenyoupushtheUNLOCKbutton,allthedoorswillunlock.Youcannotunlockanyofthedoorswiththeremotetransmitterifanydoorisopenorthekeyisintheignitionswitch.TRUNKWhenyoupushcontinuouslytheTRUNKbuttonduring0.5s,TRUNKwillopen.-3-
3.Specification3.1CPUTypeROMRAMEEPROMClockfrequencyClockfrequencygenerationPackageuPD754144-xxx(4bit)Manufacturer:NECCorporation4096X8bit(4Kbytes)128X4bit(64bytes)16X8bit(16bytes)500KHZCROsillation20pinSSOP3.2RFblockCarrerfrequencyFrequencygenerationModulationBittransmissionrateBandwidthRFoutputpower(fieldstrength)307.9MHzSAWresonatorFSK1000bpsor500bps120KHz75.6dBV/m≤μ3.3OthersDimensionWeighBatteryOperationVoltageOperationTemperature56mm×35mm×11mm21.65gLithiumcell(CR2032)Manufacturer:PANASONICBatterycorporationetc.DC3V-20+60℃˜ ℃-4-
4.Features4.1TransmissionframeThetransmissionbeginsimmediatelyincaseofLOCKandUNLOCKbuttonispressed,butTRUNKbuttonisbegunafter0.5s.Thetransmissionframeconsistsofthesynchronousframeandthedataframe.Thesynchronousframehas30synchronouscodesthatitwillbeusedforthereceivertowakeup.Thedataframeconsistsof24bitlengthidentificationcode,16bitsecuritycodeandfunctioncode.16milliondifferentidentificationcodesareavailable.Thesecuritycodeisalwayschangedincaseofanyofthebuttonsispressed.Thetransmissiontimeistypically600milliseconds.4.2BatterysavingTopreventthebatteryexhaustion,themicro-computerofthetransmitterisusuallyinactive.Whenthebuttonwillbepressed,themicro-computerwakesupimmediatelyandjudgeswhichbuttonispressing.Thenthemicro-computerconstructsthetransmissionframeandradiatesitfromtheantenna.Aftertransmitting,themicro-computerswitchesstand-bymodebyitself.-5-

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