IntroductionTheCt-GM305isahighlysensitiveandcompactGPSmousewithlowpowerconsumption.BuiltwithSiRFStarIII architectureandUSBinterfaceitcanbeusedinavarietyofapplications,inlaptopsorPDAs.Non-slipunderneathwithamagneticmounting,itiseasytoplaceontopofavehicletofixpositioning.EvenonrainydaystheCt-GM305 scertifiedwaterproofconfiguration(IPX6)ensuresperfectfunctionality. FeaturesHardwareandSoftwarel BasedonthehighperformancefeaturesoftheSiRFStarIIIsinglechipl Built-inhighgainamplifierandbandpassfilterl RoHScompliant(lead-free)l Dimension:60x60x19mml HardwarecompatiblewithSiRFGSC3xsoftwarel SBAS(WAASandEGNOS)support Performancel Cold/Warm/HotStartTime:42/35/1secondsl ReacquisitionTime:0.1secondl RFMetalShieldforbestperformanceinnoisyenvironmentsl Multi-pathMitigationHardware Interfacel USBportforGPScommunicationsinterfacel Protocol:NMEA-0183/SiRFBinary(defaultNMEA)l BaudRate:default4800bpsTechnicalSpecificationsFeatureContentDescriptionChipsetGSC3fSeriesSiRFStarIIIGSC3-7979GeneralFrequencyL1,1575.42MHzC/Acode1.023MHzchiprateChannels20AccuracyPositionAutonomous: 2.5metersSBAS: 2.0metersVelocitySpeed: 0.01meters/secondHeading: 0.01 DatumDefaultWGS-84OtherselectableforotherDatumTimetoFirstFix(TTFF)1Reacquisition0.1sec.,averageHotstart1sec.,averagetypicalTTFFWarmstart35sec.,averagetypicalTTFFColdstart42sec.,averagetypicalTTFFDynamicConditionsAltitude18,000meters(60,000feet)max.Velocity515meters/second(1000knots)max.Acceleration4g,max.PowerMainpower5VDCPowerconsumption340mW(continuousmode)SupplyCurrent68mAI/OInterfaceDatainterfaceUSBinterface.ProtocolmessagesNMEA-0183@4800bps(Default)