Omron Automotive Electronics Korea OKA-640T Remote Keyless Entry System User Manual OKA 640T user s manual

Omron Automotive Electronics Korea Co., Ltd. Remote Keyless Entry System OKA 640T user s manual

User Manual

OMRONAUTOMOTIVEELECTRONICSKOREAOKA-640TTransmitter,RFKeylessEntrySystem
1.ConstitutionoftheRadioFrequencyKeylessEntrySystemforvehicleTheradiofrequencykeylessentryisasystemthatitcontrolslockingandunlockingthedoorbywirelessremotecontroller.Thissystemconsistsoftwocomponents.TheTRANSMITTERisadevicethattransmitsthesignalwhenthebuttonispressed.Thetransmissionsignalconsistsofseveralsynchronouscodes,uniqueidentificationcode,securitycodeandfunctioncode.TheRECEIVERisfixedinsidethevehicle.Itworksintermittentlytopreventthebatteryexhaustion.Whenthereceiverdetectsthesynchronouscode,itrunscontinuouslytoreceivethesignalscompletely.Afterreceivingthesignal,thereceiverdecideswhichoperationwillbeperformed.Theusercanselectthefollowingoperationsbypressingthebuttonoftheremotetransmitter.OPERATIONACTIONLOCK lockthedoorUNLOCK unlockthedoorTransmitterf=307.90MHz-2-
LOCKUNLOCK LED2.OperationREMOTETRANSMITTERYoucanlockandunlockyourvehiclewiththeremotetransmitter.LOCKWhenyoupushtheLOCKbutton,allthedoorswilllock.Youcannotlockanyofthedoorswiththeremotetransmitterifanydoorisopenorthekeyistheignitionswitch.UNLOCKWhenyoupushtheUNLOCKbutton,allthedoorswillunlock.Youcannotunlockanyofthedoorswiththeremotetransmitterifanydoorisopenorthekeyisintheignitionswitch.-3-
3.Specification3.1CPUTypeROMRAMEEPROMClockfrequencyClockfrequencygenerationPackageuPD754144-xxx(4bit)Manufacturer:NECCorporation4096×8bit(4Kbytes)128×4bit16×8bit500KHzCROsillation20pinSSOP3.2RFblockCarrerfrequencyFrequencygenerationModulationBittransmissionrateBandwidthRFoutputpower(fieldstrength)307.90MHzSAWresonatorFSK1000bpsor500bps120KHz75.6dBV/m≤μ3.3OthersDimensionWeighBatteryOperationVoltageOperationTemperature52.5mm×33mm×11mm18.67gLithiumcell(CR2032)Manufacturer:PANASONICBatterycorporationetc.DC3V-20+60℃˜ ℃-4-
4.Features4.1TransmissionframeThetransmissionbeginsimmediatelyincaseofLOCKandUNLOCKbuttonispressed.Thetransmissionframeconsistsofthesynchronousframeandthedataframe.Thesynchronousframehas30synchronouscodesthatitwillbeusedforthereceivertowakeup.Thedataframeconsistsof24bitlengthidentificationcode,16bitsecuritycodeandfunctioncode.16milliondifferentidentificationcodesareavailable.Thesecuritycodeisalwayschangedincaseofanyofthebuttonsispressed.Thetransmissiontimeistypically600milliseconds.4.2BatterysavingTopreventthebatteryexhaustion,themicro-computerofthetransmitterisusuallyinactive.Whenthebuttonwillbepressed,themicro-computerwakesupimmediatelyandjudgeswhichbuttonispressing.Thenthemicro-computerconstructsthetransmissionframeandradiatesitfromtheantenna.Aftertransmitting,themicro-computerswitchesstand-bymodebyitself.-5-

Navigation menu