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Users Manual | Users Manual | 1.55 MiB | August 09 2015 | |||
1 2 3 4 | RF Exposure Info | August 09 2015 | ||||||
1 2 3 4 | External Photos | August 09 2015 | ||||||
1 2 3 4 | Internal Photos | August 09 2015 | ||||||
1 2 3 4 | ID Label/Location Info | August 09 2015 | ||||||
1 2 3 4 | Cover Letter(s) | August 09 2015 | ||||||
1 2 3 4 | Cover Letter(s) | August 09 2015 | ||||||
1 2 3 4 | Test Setup Photos | August 09 2015 | ||||||
1 2 3 4 | Test Report | August 09 2015 | ||||||
1 2 3 4 | Cover Letter(s) | August 09 2015 | ||||||
1 2 3 4 | ID Label/Location Info | August 09 2015 | ||||||
1 2 3 4 | RF Exposure Info | August 09 2015 | ||||||
1 2 3 4 | Test Report | August 09 2015 | ||||||
1 2 3 4 | Cover Letter(s) | August 09 2015 | ||||||
1 2 3 4 | ID Label/Location Info | August 09 2015 |
1 2 3 4 | Users Manual | Users Manual | 1.55 MiB | August 09 2015 |
SafetyInformation il CHCN72GNSSReference Receiver Revision1.0 January2015 Copyright Copyright 20092015 CHC | Shanghai HuaCe NavigationTechnologyLtd.Allrightsreserved.The CHCaretrademarkofShanghaiHuaCeNavigation Technology Limited. All other trademarks are the propertyoftheirrespectiveowners. Trademarks All product and brand names mentioned in this publication are trademarks of their respective holders. SafetyWarnings TheGlobalPositioningSystem(GPS)isoperatedby the U.S. Government, which is solely responsible for the accuracy and maintenance of the GPS network. Accuracy can also be affected by poor satellitegeometryandobstructions,likebuildings andheavycanopy. FCCinterferencestatement Thisequipmenthasbeendesignedtocomplywith thelimitsforaClassBdigitaldevice,pursuantto part 15 of the FCC Rules in the Portable Mode. These limits are designed to provide reasonable protection against harmful in a residentialinstallation. Operation two conditions:(1)thisdevicemaynotcauseharmful interference and (2) this device must accept any interference received, including interference that maycauseundesiredoperation. interference is subject following the to Note:
THEGRANTEEISNOTRESPONSIBLEFORANY CHANGESORMODIFICATIONSNOTEXPRESSLY APPROVEDBYTHEPARTYRESPONSIBLEFOR COMPLIANCE.SUCHMODIFICATIONSCOULDVOID THEUSERSAUTHORITYTOOPERATETHE EQUIPMENT Thisproducthasbeentestedandfoundtocomply withthelimitsforPart15oftheFCCRules.These limitsaredesignedtoprovidereasonable protectionagainstharmfulinterferenceina residentialinstallation.Thisproductgenerates, uses,andcanradiateradiofrequencyenergyand, ifnotinstalledandusedinaccordancewiththe instructions,maycauseharmfulinterferenceto radiocommunications.However,thereisno guaranteethatinterferencewillnotoccurina particularinstallation.Ifthisproductdoescause harmfulinterferencetoradioortelevision reception,whichcanbedeterminedbyturningthe equipmentoffandon,theuserisencouragedto trytocorrecttheinterferencebyoneormoreof thefollowingmeasures:
Reorientorrelocatethereceivingantenna. Increasetheseparationbetweentheequipment andreceiver. Connect the equipment into an outlet on a circuitdifferentfromthattowhichthereceiveris connected. Consult the dealer or an experienced radio/TV technicianforhelp. N72 GNSS Reference Receiver User Guide Revision1.0January2015 N72GNSSReferenceReceiverUserGuide Page 1 SAFETYINFORMATION BeforeyouuseyourCHCN72GNSSreferencereceiver,makesurethat youhavereadandunderstoodallsafetyrequirements. REGULATIONSANDSAFETY Thereceivercontainsaninternalwirelessmodemforcommunicatingsignals throughBluetoothwirelesstechnologyorthroughanexternaldata communicationsradio.Regulationsregardingtheuseofthewirelessmodem varygreatlyfromcountrytocountry.Insomecountries,theunitcanbeused withoutobtaininganenduserlicense.Othercountriesrequireenduser licensing.Forlicensinginformation,consultyourlocalCHCdealer. BeforeoperatingaN72GNSSreferencereceiver,determineifauthorization oralicensetooperatetheunitisrequiredinyourcountry.Itisthe responsibilityoftheendusertoobtainanoperator'spermitorlicensefor thereceiverforthelocationorcountryofuse. TYPEAPPROVAL Typeapproval,oracceptance,coverstechnicalparametersoftheequipment relatedtoemissionsthatcancauseinterference.Typeapprovalisgrantedto themanufacturerofthetransmissionequipment,independentfromthe operationorlicensingoftheunits.Somecountrieshaveuniquetechnical requirementsforoperationinparticularradiomodemfrequencybands.To complywiththoserequirements,CHCmayhavemodifiedyourequipmentto begrantedTypeapproval.Unauthorizedmodificationoftheunitsvoidsthe Typeapproval,thewarranty,andtheoperationallicenseoftheequipment. EXPOSURETORADIOFREQUENCYRADIATION Safety.ExposuretoRFenergyisanimportantsafetyconsideration.TheFCC hasadoptedasafetystandardforhumanexposuretoradiofrequency electromagneticenergyemittedbyFCCregulatedequipment.Properuseof thisradiomodemresultsinexposurebelowgovernmentlimits.The followingprecautionsarerecommended:
Donotoperatethetransmitterwhensomeoneis20cm(7.8inches)of theantenna. DonotoperatethetransmitterunlessallRFconnectorsaresecureand anyopenconnectorsarecorrectlyterminated. Donotoperatetheequipmentnearelectricalblastingcapsorinan N72GNSSReferenceReceiverUserGuide Page 2 SafetyInformation explosiveatmosphere. Allequipmentmustbecorrectlygroundedforsafeoperation. Allequipmentshouldbeservicedonlybyaqualifiedtechnician. BATTERYSAFETY WARNINGDonotdamagetherechargeableLithiumionbattery.A damagedbatterycancauseanexplosionorfire,andcanresultinpersonal injuryand/orpropertydamage.Topreventinjuryordamage:
Donotuseorchargethebatteryifitappearstobedamaged.Signs ofdamageinclude,butarenotlimitedto,discoloration,warping, andleakingbatteryfluid. Donotexposethebatterytofire,hightemperature,ordirect sunlight. Donotimmersethebatteryinwater. Donotuseorstorethebatteryinsideavehicleduringhotweather. Donotdroporpuncturethebattery. Donotopenthebatteryorshortcircuititscontacts. WARNINGAvoidcontactwiththerechargeableLithiumionbatteryifit appearstobeleaking.Batteryfluidiscorrosive,andcontactwithitcanresult inpersonalinjuryand/orpropertydamage.Topreventinjuryordamage:
Ifthebatteryleaks,avoidcontactwiththebatteryfluid. Ifbatteryfluidgetsintoyoureyes,immediatelyrinseyoureyeswith cleanwaterandseekmedicalattention.Donotrubyoureyes!
Ifbatteryfluidgetsontoyourskinorclothing,immediatelyuse cleanwatertowashoffthebatteryfluid. WARNINGChargeandusetherechargeableLithiumionbatteryonlyin strictaccordancewiththeinstructions.Chargingorusingthebatteryin unauthorizedequipmentcancauseanexplosionorfire,andcanresultin personalinjuryand/orequipmentdamage.Topreventinjuryordamage:
Donotchargeorusethebatteryifitappearstobedamagedor leaking. ChargetheLithiumionbatteryonlyinaCHCproductthatis specifiedtochargeit. Discontinuechargingabatterythatgivesoffextremeheatora burningodor. UsethebatteryonlyinCHCequipmentthatisspecifiedtouseit. Usethebatteryonlyforitsintendeduseandaccordingtothe instructionsintheproductdocumentation. N72GNSSReferenceReceiverUserGuide Page 3 SafetyInformation DCPOWERSUPPLYSAFETY WARNINGWhenDCvoltageisappliedtothisreceiverthroughCOM1or COM2(Lemoconnectors),theDCvoltagemustbelimitedtonomorethan 36VDC+0%underbothnormalandsinglefaultconditions.Ifthe recommendedinputvoltageisexceeded,thereceivermaypresentan electricalhazard. WETLOCATIONSAFETY WARNINGThisreceiverisnotintendedtobeusedinawetlocation,ora locationthatmaybecomewet,whenitispoweredbytheexternalDCpower supply.Usethereceiverinawetlocationonlywhenoperatingitonitsown internalbattery. WARNINGTheexternalpoweradapteranditsassociatedpowercordand plugarenotintendedtobeinstalledoutdoors,orinawetlocation. WARNINGDonotpowerthereceiverthroughexternalpowerwhen operatinginawetenvironmentoranenvironmentthatmaybecomewet. Thepowerinputconnectionsmustbesheltered. N72GNSSReferenceReceiverUserGuide Page 4 CONTENTS SafetyInformation...........................................................................................................................................2 Regulationsandsafety.............................................................................................................................2 Typeapproval..........................................................................................................................................2 Exposuretoradiofrequencyradiation....................................................................................................2 Batterysafety...........................................................................................................................................3 DCpowersupplysafety...........................................................................................................................4 Wetlocationsafety..................................................................................................................................4 1.Introduction.................................................................................................................................................7 1.1.Aboutthereceiver............................................................................................................................7 1.2.Technicalsupport..............................................................................................................................7 1.3.Disclaimer.........................................................................................................................................8 1.4.Yourcomments.................................................................................................................................8 2.Overview......................................................................................................................................................9 2.1.Receiverframework..........................................................................................................................9 2.1.1.Thenetworkapplianceconcept..........................................................................................10 2.2.Receiverservices.............................................................................................................................10 2.3.Receiverfeatures............................................................................................................................11 2.4.Useandcare...................................................................................................................................11 2.5.Electronicinterface.........................................................................................................................12 2.6.Keypadanddisplay.........................................................................................................................12 2.7.Rearconnectors..............................................................................................................................13 3.BatteriesandPower..................................................................................................................................15 3.1.Externalpower................................................................................................................................15 3.2.Batterysafety..................................................................................................................................16 3.3.Batteryperformance......................................................................................................................16 3.4.Chargingthebattery.......................................................................................................................17 3.5.Storingthebattery..........................................................................................................................17 3.6.Removingthebattery.....................................................................................................................17 4.SettingUptheReceiver.............................................................................................................................19 4.1.Guidelines.......................................................................................................................................19 4.1.1.Environmentalconditions....................................................................................................19 4.1.2.Sourcesofelectricalinterference........................................................................................19 4.1.3.Uninterruptablepowersupply.............................................................................................19 4.1.4.Lightingandsurgeprotection..............................................................................................20 4.1.5.Placingtheantenna.............................................................................................................20 4.2.Systeminstallation..........................................................................................................................21 4.2.1.Supportedantenna..............................................................................................................21 4.2.2.Systeminstallationdiagram.................................................................................................21 5.ConfiguringtheReceiver:KeypadandDisplay..........................................................................................23 5.1.Buttonfunctions.............................................................................................................................23 5.2.Homescreen...................................................................................................................................23 5.3.Statusscreens.................................................................................................................................24 N72GNSSReferenceReceiverUserGuide Page 5 5.4.SettingupthereceiveraspartofanEthernetconfiguration.........................................................25 6.ConfiguringtheReceiver:OtherThanKeypadandDisplay.......................................................................26 6.1.ConfiguringtheEthernetsettings...................................................................................................26 6.2.Configuringthroughawebbrowser...............................................................................................27 6.2.1.Changingthesettings..........................................................................................................28 6.2.1.1.Statusmenu..............................................................................................................28 6.2.1.2.Satellitesmenu.........................................................................................................31 6.2.1.3.ReceiverSettingsmenu............................................................................................33 6.2.1.4.DataRecordingmenu...............................................................................................36 6.2.1.5.IOSettingsmenu.......................................................................................................40 6.2.1.6.GPRSmenu...............................................................................................................44 6.2.1.7.Radiomenu...............................................................................................................44 6.2.1.8.WANmenu................................................................................................................45 6.2.1.9.Wifimenu.................................................................................................................47 6.2.1.10.BluetoothSetmenu................................................................................................48 6.2.1.11.NetworkServicemenu...........................................................................................48 6.2.1.12.Firmwaremenu....................................................................................................497 7.DefaultSettingandConfigurationFiles.....................................................................................................50 7.1.Defaultreceiversettings.................................................................................................................50 7.1.1.Resettingthereceivertofactorydefaults............................................................................50 7.1.2.Usingconfigurationfilestoduplicatereceiversettings.......................................................53 8.Specifications.............................................................................................................................................54 8.1.GNSScharacteristics.......................................................................................................................54 8.2.Communication..............................................................................................................................54 8.3.Physical...........................................................................................................................................55 8.4.Electrical.........................................................................................................................................55 8.5.General...........................................................................................................................................55 8.6.Datastorage....................................................................................................................................56 A.UpgradingtheReceiverFirmware.............................................................................................................57 A.I.TheWinFlashutility.........................................................................................................................57 A.I.i.InstallingtheWinFlashutility................................................................................................57 A.II.Upgradingthereceiverfirmware...................................................................................................57 A.II.i.UpgradingthroughUSBport................................................................................................57 A.II.ii.Upgradingthroughabrowser..............................................................................................58 B.Troubleshooting.........................................................................................................................................59 B.I.Receiverissues.................................................................................................................................59 C.CommunicationPortsDefinition...............................................................................................................61 C.I.CHCN72ReceiverCOM1(10PINLEMOPort)Definition...............................................................61 C.II.CHCN72ReceiverCOM2(10PINLEMOPort)Definition..............................................................61 C.III.CHCN72ReceiverDB9MaleConnectorDefinition.......................................................................62 D.Glossary.....................................................................................................................................................63 N72GNSSReferenceReceiverUserGuide Page 6 1. INTRODUCTION TheN72GNSSReferenceReceiverUserGuidedescribeshowtosetupand usetheCHCN72GNSSreferencereceiver. Inthismanual,thereceiverreferstotheN72GNSSreferencereceiver unlessotherwisestated. EvenifyouhaveusedotherGlobalNavigationSatelliteSystems(GNSS) productsbefore,CHCrecommendsthatyouspendsometimereadingthis manualtolearnaboutthespecialfeaturesofthisproduct.Ifyouarenot familiarwithGNSS,gotowww.chcnav.comforaninteractivelookatCHC andGNSS. 1.1. ABOUTTHERECEIVER TheN72GNSSreferencereceiver(thereceiver)isamultiplefrequency GNSSreceiver.ItcantrackallGPS(L1/L2/L5),GLONASS(L1/L2)andBDS
(B1/B2)signals. Youcanusethefrontpanelofthereceiveroranofficecomputerto configurethereceiver,accessfiles,andpublishdatafilestoacompany IntranetortotheInternet.Thereceivermakesiteasyforyoutosetupa powerful,flexible,andreliablereferencestationforcontinuousoperation. Thereceiverservesinallcommongeodeticreferencereceiverroles.Itcan bethemaincomponentinaContinuouslyOperatingReferenceStation
(CORS),streamingdatatoCHCGNSSInfrastructuresoftware.Itcanalsowork wellasacampaignreceiverpriortopermanentdeployment.Thereceiver makesanexcellentportableRTKbasestationwithitsinternalbattery.Italso hasspecializedcapabilitiesthatmakeitanexcellentreferencereceiverfor scientificapplications. 1.2. TECHNICALSUPPORT Ifyouhaveaproblemandcannotfindtheinformationyouneedinthe productdocumentationorCHCwebsite(www.chcnav.com),contactyour localCHCdealerfromwhichyoupurchasedthereceiver(s). IfyouneedtocontactCHCtechnicalsupport,pleasecontactusbyemail
(support@chcnav.com)orSkype(chc_support). N72GNSSReferenceReceiverUserGuide Page 7 1.Introduction 1.3. DISCLAIMER Beforeusingthereceiver,pleasemakesurethatyouhavereadand understoodthisUserGuide,aswellasthesafetyrequirements.CHCholds noresponsibilityforthewrongoperationbyusersandforthelosses incurredbythewrongunderstandingaboutthisUserGuide.However,CHC reservestherightstoupdateandoptimizethecontentsinthisguide regularly.PleasecontactyourlocalCHCdealerfornewinformation. 1.4. YOURCOMMENTS Yourfeedbackaboutthisuserguidewillhelpustoimproveitinfuture revision.Pleaseemailyourcommentstosupport@chcnav.com. N72GNSSReferenceReceiverUserGuide Page 8 2. OVERVIEW ThischapterintroducestheN72GNSSreferencereceiver(thereceiver). ThisreceivermakesiteasytosetupapowerfulandreliableContinuously OperatingReferenceStation(CORS)ortocollectdatafromtemporaryfield locations. Thereceiverisidealforthefollowinginfrastructureapplications:
AspartofaGNSSInfrastructurenetworkinconjunctionwithCHC ReferenceStationNetwork(CRNet)software. Aspartofapermanentreferencestationwithorwithoutsupporting software. AtemporaryfieldbasestationtobroadcastRTKcorrectionsandcollect observationsforpostprocessing. 2.1. RECEIVERFRAMEWORK ThereceiverintegratesthemultifrequencyGNSStechnologyintoa specializedprocessingandcommunicationsframework.Thereceivercan operateasastandalonereferencestationoritcanbeintegratedintoa scalablenetwork. WithanInternetProtocol(IP)astheprimarycommunicationsmethod,you canusepublicdomaintools,suchasawebbrowserandFTPclient,to configurethereceiverandaccessloggeddatafiles. NOTEAllreferencestotheInternetrefertoeitheraWideArea Network(WAN)oraLocalAreaNetwork(LAN)connection. Thereceiveradoptsasecuredsystemthatrequiresapasswordprotected loginforconfigurationchangesand/orfileaccess. Usethenetworkmanagementfeaturestocreateabase/roverconfiguration withavarietyofoperatingmodes.Youcanthenenablethosemodesas necessaryinsteadofswitchingtheglobalstateofthereceiverfromone modetoanother.Forexample,youcanconfigureanumberofstreaming serviceswithdifferentconfigurations(suchasanycombinationofdata stream,sampleinterval)ondifferentTCPorUDPports.Toactivateoneor moremodes,opentheconnectiontothespecificport.Thisallowsmultiple clientstoaccessanygivenstreamingservice. Thesefeaturesandmanymore,shiftthemodelofaGNSSreceivertoward theconceptofa"networkappliance". N72GNSSReferenceReceiverUserGuide Page 9 2.Overview 2.1.1. THENETWORKAPPLIANCECONCEPT Traditionally,aGNSSreceiverhasoneoperator.Thatpersonistheonlyuser ofthereceiversotheycanchangesettingswithoutaffectingotherusers. WiththeN72GNSSreferencereceiver,anoperatorcanconfigureareceiver once,andthenmakeitavailableasanetworkapplianceforgeneraluseby oneormoreusers(orclients). Thisnetworkapplianceconceptletsyousetupthereceivertoprovideone ormoreservicesthatoneormoreuserscanaccessthroughaLocalArea Network(LAN)oraWideAreaNetwork(WAN),suchastheInternet.Once thereceiverissetup,youneedmakeonlyminimalchanges,ifany,tothe receiverconfiguration. Whenthereceiverisoperatingasanetworkappliance,itprovidesservices toallusersattachedtothereceiverthroughthenetwork. Differentstreamedservicesmaybeconfiguredondifferentports,for example,withdifferingdataratesordatacombination.Toobtainaservice, theclienthasonlytoconnecttoaspecificport.Inthisway,mostusersdo notneedtocontrolthereceiver.Changingglobalsettings,suchasmasks,will affectallusersofallservices. Thereceiverprovidesthefollowingstandardconfigurationanddatalogging services:
Use... HTTP FTP Toperform... Allmanualandautomatedconfigurationoperationstomanage theloggeddatafilespace. Remotemanualand/orautomatedoperationstomanagethe loggeddatafileuploadpath. 2.2. RECEIVERSERVICES Thereceivercanprovideoneormorestreamingorqueryservicesovera RS232serialportoraTCP/IPport:
Streamingservice Anyonewithauthorizedaccesscanobtainstreamedinformation,such asGNSSmeasurementsorRTCMcorrections,withouthavingtocontrol orissuecommandstothereceiver.Theclientsimplyconnectstothe portthatisstreamingtherequiredinformation. N72GNSSReferenceReceiverUserGuide Page 10 2.Overview 2.3. RECEIVERFEATURES 220channels GPS:L1C/A,L2C,L2E,L5 GLONASS:L1C/A,L1,L2C/A,L2P Galileo:E1,E5A,E5B SBAS:WAAS,EGNOS,MSAS BDS:B1,B2 16GBinternaldataloggingstorage ExternalUSBdrivesupport Integratedbattery,providesupto17hoursoperation Integrateddisplayandkeypadforsystemconfigurationwithouta controller IntegratedBluetoothwirelesstechnologyforcablefreedata transmission Permanent/semipermanentandmobilequicksetupbasestation capability EasytouseWebinterfacemenusystemforrapidconfigurationand statuschecking 40Cto+65C(40Fto+149F)operatingtemperaturerange 12Vto36VDCinputpowerrange Rugged,weatherproofconstructionwithanIP67environmentalrating DatafilegeneratedinHCN IMX287processorbasedonembeddedLinux,mainfrequencyupto 450MHz Eightindependentdataloggingsessionswithconfigurablememory pooling FTPpushtoallowuploadingofloggeddatafilestoremotesites Ethernetconfigurationthroughthefrontpanel Circulatingdataloggingmethod MultiplelanguagesavailablethroughtheWebinterface NTRIP(NetworkedTransportofRTCMviaInternetProtocol) client/server/castersupport 2.4. USEANDCARE Thisreceivercanwithstandtheroughtreatmentandtoughenvironment thattypicallyoccursinCORSinstallation.However,itisahighprecision electronicinstrumentandshouldbetreatedwithreasonablecare. CAUTIONOperatingorstoringthereceiveroutsidethespecified temperaturerangecandamageit.Formoreinformation,seeChapter8 Specifications. N72GNSSReferenceReceiverUserGuide Page 11 2.Overview 2.5. ELECTRONICINTERFACE Highpowersignalsfromanearbyradioorradartransmittercanoverwhelm thereceivercircuits.Thisdoesnotharmtheinstrument,butitcanprevent thereceiverelectronicsfromfunctioningcorrectly. Avoidlocatingthereceiverorantennawithin400metersofpowerfulradar, television,orothertransmittersorGNSSantennas.Lowpowertransmitters, suchasthoseincellphonesandtwowayradios,normallydonotinterfere withreceiveroperations. 2.6. KEYPADANDDISPLAY 1 1 2 3 2 3 2 Feature PowerLED Buttons Display Description Showsifthepowerisonoroff. Usetoturnon,turnofforconfigurethereceiver.See 5.1.Buttonfunctions. ThisVacuumFluorescentdisplayenablesyouviewthe currentconfigurationsettingsofreceiverandthe operationbyoperators.See5.3.Homescreen. N72GNSSReferenceReceiverUserGuide Page 12 2.Overview 2.7. REARCONNECTORS 1 2 3 4 5 2.8. Connectortype TNC SIMcardslot USB TNC TNC DB9 RJ45jack 1 2 3 4 5 6 7 8 Lemo(10pin)Port1 9 Lemo(10pin)Port2 6 7 8 9 Description ConnecttotheGNSSantenna SIMcardisinsertedheretoconnectGPRSnetwork ConnecttoexternalUSBdriveforexternaldata loggingafterconfiguredthroughwebinterface. Upgradethereceiverfirmwarewiththe insertedUSBdrivercontainingtherelated upgradefileafterrestartthereceiver. Connectthereceivertoacomputerto downloadfilesfromthereceiver(asexternal storageequipment)tothecomputer. ForexternalGPRSantenna Forexternalradio RS232serialport,9pinmaleconnector,fordata communicationwhennecessary Supportslinksto10BaseT/100BaseT autonegotiatenetworks HTTP,TCP/IP,UDP,FTP,NTRIPCaster,NTRIP Server,NTRIPClient Simultaneouslytransmitsmultipledatastream PowerfromanexternalAC/DCpowersupply. RS232serialcommunicationsusinga10pin Lemocable(CHCDataCable). Passthroughtothemainboardwithoutissuing thepassthroughcommandviathisport. PowerfromanexternalAC/DCpowersupply. RS232serialcommunicationsusinga10pin N72GNSSReferenceReceiverUserGuide Page 13 2.Overview Lemocable(CHCDataCable). Datastreamingtransmissionport. N72GNSSReferenceReceiverUserGuide Page 14 3. BATTERIESANDPOWER TheN72GNSSreferencereceiverusesaninternalrechargeableLithiumion battery,whichcanbereplacedonlyatanAuthorizedCHCServiceCenter. Thereceivercanalsobepoweredbyanexternalpowersourcethatis connectedtoeitheroftheLemoports. Theoperationaltimeprovidedbytheinternalbatterydependsonthetype ofmeasurementandoperatingconditions.Typically,theinternalbattery providesupto17hoursoperation. NOTEAllbatteryoperationaltestsarecarriedoutwithnew, fullychargedbatteriesatroomtemperature,trackingbothGPSand GLONASSsatelliteswhilestoringandstreamingdataat1Hz.Older batteries,attemperaturessignificantlyhigherorlowerthanroom temperature,willhaveareducedperformance.Powerconsumption increaseswithanincreasingnumberofactivelytrackedsatellitesand withincreasingobservationandstoragerates. 3.1. EXTERNALPOWER Thereceiverusesanexternalpowersourceinpreferencetoitsinternal battery.Ifthereceiverisnotconnectedtoanexternalpowersource,orif theexternalpowersupplyfails,theinternalbatteryisused. Thereceiversinternalbatterychargesonlywhentheexternalvoltageis above11VDC.CHCrecommendsthattheappliedexternalpoweroffers between12VDCand36VDCandisabletosupplyatleast4Wofpowerfor thelongterminstallationsandensuringthattheinternalbatteryischarged andreadytocompensateforpowersupplydisruptions. Whilecarryingoutstaticmeasurementsforpostprocessedcomputations usingtheinternalmemory,ifnoexternalpowerissuppliedandtheinternal batteryisdrained,thereceivershutsdown.Nodataislost;however,when powerisrestored,thereceivershouldbeconfiguredagain. WARNINGTheexternalACpoweradapteranditsassociatedpowercord andplugarenotintendedtobeinstalledoutdoors,norinawetlocation.Do notpowerthereceiverthroughexternalpowerwhenoperatinginawet environmentoranenvironmentthatmaybecomewet.Thepowerinput connectionsmustbesheltered. WARNINGWhenyouapplyDCvoltagetothisproductthroughtheLemo connector,theDCvoltagemustbelimitedto36VDC+0%underboth N72GNSSReferenceReceiverUserGuide Page 15 3.BatteriesandPower normalandsinglefaultconditions.Thisproductmaypresentanelectrical hazardiftherecommendedinputvoltageisexceeded. 3.2. BATTERYSAFETY ThereceiverispoweredbyarechargeableinternalLithiumionbattery. Chargeandusethebatteryonlyinstrictaccordancewiththefollowing instructions. WARNINGDonotdamagetherechargeableLithiumionbattery.A damagedbatterycancauseanexplosionorfire,andcanresultinpersonal injuryand/orpropertydamage. Topreventinjuryordamage:
Donotuseorchargethebatteryifitappearstobedamaged.Signsof damageinclude,butarenotlimitedto,discoloration,warping,and leakingbatteryfluid. Donotexposethebatterytofire,hightemperature,ordirectsunlight. Donotimmersethebatteryinwater. Donotuseorstorethebatteryinsideavehicleduringhotweather. Donotdroporpuncturethebattery. Donotopenthebatteryorshortcircuititscontacts. WARNINGAvoidcontactwiththerechargeableLithiumionbatteryifit appearstobeleaking.Batteryfluidiscorrosive,andcontactwithitcan resultinpersonalinjuryand/orpropertydamage. Topreventinjuryordamage:
Ifthebatteryleaks,avoidcontactwiththebatteryfluid. Ifbatteryfluidgetsintoyoureyes,immediatelyrinseyoureyeswith cleanwaterandseekmedicalattention.Donotrubyoureyes!
Ifbatteryfluidgetsontoyourskinorclothing,immediatelyuseclean watertowashoffthebatteryfluid. 3.3. BATTERYPERFORMANCE Tooptimizebatteryperformanceandextendbatterylife:
Fullychargeallnewbatteriesbeforeuse. Donotuseatextremetemperatures.Thereceiverisdesignedto operateat40Cto+65C(40Fto+149F).However,operationat temperaturesoflessthan0C(32F)cancausearapiddropinbattery life. N72GNSSReferenceReceiverUserGuide Page 16 3.BatteriesandPower 3.4. CHARGINGTHEBATTERY TherechargeableLithiumionbatteryissuppliedpartiallycharged.Charge thebatterycompletelybeforeusingitforthefirsttime.Ifthebatteryhas beenstoredforlongerthanthreemonths,chargeitbeforeuse. Whenconnectedtoasuitablepowersource,theinternalbatterycharges fullyin10hours. WARNINGChargeandusetherechargeableLithiumionbatteryonlyin strictaccordancewiththeinstructions.Chargingorusingthebatteryin unauthorizedequipmentcancauseanexplosionorfire,andcanresultin personalinjuryand/orequipmentdamage. Topreventinjuryordamage:
Donotchargeorusethebatteryifitappearstobedamagedorleaking. ChargetheLithiumionbatteryonlywithintheN72receiver.The batterycanonlyberemovedbyanauthorizedCHCServiceCenter. 3.5. STORINGTHEBATTERY TheinternalLithiumionbatteryadoptsaselfprotectionmechanismthat protectsthebatteryfromdischargewhenitsvoltageisbelow6Vandshuts downthereceiver.Theinternalbatterywillbeactivatedwhenchargedby theexternalpowersupply. Donotstorethereceiverattemperaturesoutsidetherange45Cto+80C
(49Fto+176F). Theinternalbatterywillonlychargefromanexternalpowersourcethat deliversmorethan11V,forexample,anACpoweradaptor.Thereceiveris suppliedwithamainspowersupplyunitthatrechargesthebatteryinside thereceiverwhenitisconnectedthroughtheadaptortoeitheroftheLemo ports.Whenyouusethereceiverinalongterminstallation,CHC recommendsthatyouusethispowersupplyoranotherthatprovidesat least12VDCatalltimestokeeptheinternalbatterycharged.Thiswill ensurethattheinternalbatteryprovidesanuninterruptedpowersupply thatwillkeepthereceiveroperationalforupto17hoursafterapower failure. 3.6. REMOVINGTHEBATTERY TheinternalLithiumionbatterymayberemovedonlyatanauthorizedCHC N72GNSSReferenceReceiverUserGuide Page 17 3.BatteriesandPower ServiceCenter.Ifthebatteryisremovedatanunauthorizedservicecenter, theremainingwarrantyontheproductwillbevoid. N72GNSSReferenceReceiverUserGuide Page 18 4. SETTINGUPTHERECEIVER Thischapterdescribesbestpracticesforsettinguptheequipment,and outlinestheprecautionsthatyoumusttaketoprotecttheequipment.Italso describesthetypicalinstallationdiagramofreferencestationcomposedof N72GNSSreceiver,GNSSantenna,externalpowerandnetworkcable. Theantennainstallationguidelinesdescribedherearetheminimum standards.Wheninstallingageodeticantennatogatherpreciseobservation data,alwaysfollowrecommendedCORSinstallationpracticestothegreatest extentpossible. 4.1. GUIDELINES Whenyousetupthereceiver,followtheseguidelines. 4.1.1. ENVIRONMENTALCONDITIONS Thereceiverhasawaterproofhousingbutyoumusttakereasonablecareto keeptheunitdry. Toimprovetheperformanceandlongtermreliabilityofthereceiver,donot exposethereceivertoextremeenvironmentalconditions,suchas:
Water Heatgreaterthan65C(149F) Coldlessthan40C(40F) Corrosivefluidsandgases 4.1.2. SOURCESOFELECTRICALINTERFERENCE DonotplacetheGNSSantennanearthefollowingsourcesofelectricaland magneticnoise:
Gasolineengines(sparkplugs) Televisionsandcomputermonitors Alternatorsandgenerators Electricmotors EquipmentwithDCtoACconverters Fluorescentlights Switchingpowersupplies Arcweldingequipment 4.1.3. UNINTERRUPTABLEPOWERSUPPLY CHCrecommendsthatyouuseanuninterruptiblepowersupply(UPS)to N72GNSSReferenceReceiverUserGuide Page 19 4.SettingUptheReceiver powerthereceiver.TheinternalbatterycanalsooperateasaUPSforupto 17hours.AUPSprotectstheequipmentfrompowersurgesandspikes,and keepsthereceiverrunningduringshortpoweroutages. Formoreinformation,contactyourlocalCHCdealer. 4.1.4. LIGHTINGANDSURGEPROTECTION CHCrecommendsthatyouinstalllightningprotectionequipmentat permanentsites.Allconnectionstothereceivershouldhavesurge protection.Typically,theminimumprotectionshouldincludeasurge protectorintheantennafeedline,onthereceiver'spowersupplysystem.If serialdevicesareattachedtothereceiver,thoseserialconnectionsshould alsobeprovidedwithsurgeprotection.Also,protectanycommunications andpowerlinesatbuildingentrypoints.Ifyouuseotherantennas,suchasa radiomodemthatdistributesrealtimecorrectionmessages,installsurge protectiononthoseantennafeedsaswell. Nosurgeprotectiondevicescanofferprotectionunlesstheyareconnected toanexcellentgroundusingverylowimpedanceconductors.Equipment damagecausedbyelectricalsurgesoccursinmanypermanentinstallations eventhoughsurgeprotectionisinplace.Commonly,thisisbecausethe groundingsystemusedwasdesignedtoprotectagainstACelectricalhazards ratherthantodissipatethesudden,highcurrentsurgescausedbylightning. Pleaseconsultwithalightningprotectionexpertorresearchthetopicwhen planningpermanentinstallations. Formoreinformation,contactyourlocalCHCdealer. 4.1.5. PLACINGTHEANTENNA TheantennalocationwillhaveasignificanteffectonthequalityofyourN72 receiver'sperformance.Intemporarydevelopmentsitmaynotalwaysbe possibletosetuponanideallocationwithanexcellentskyview.However, wheninstallingapermanentstation,besuretoplantheantennalocation andmountingsystemcarefully. Thegeneralrequirementsfortheantennalocationandmountare:
Keepthedistancefromtheobjectsthatmaycausethemultipatheffects
(suchasbuildings,trees,reflectivesurface)foratleast200m(656feet) Clearskyabove10degreeselevation Awayfromelectromagnetisminterferenceregion(e.g.Microwave station,radiotransmittingstation,highvoltagewires)atleast200m
(656feet) Mounted1.5m(5feet)aboveanynearbysignalreflectors. N72GNSSReferenceReceiverUserGuide Page 20 4.SettingUptheReceiver Mountstabilitythatisnotinfluencedbythermalexpansion,wind loading,orsoilexpansion/contraction. Foradditionalinformationonthistopic,researchthereferenceantenna installationguidelinespublishedbythe:
USNationalGeodeticSurvey
(http://www.ngs.noaa.gov/PUBS_LIB/CORS_guidelines.pdf) InternationalGNSSService
(http://igscb.jpl.nasa.gov/network/guidelines/guidelines.html) 4.2. SYSTEMINSTALLATION 4.2.1. SUPPORTEDANTENNA ThereceiverprovidesaTNCtypefemaleconnectorforconnectingtoan antenna.ThereceiverisintendedforusewithaCHCGeodeticGNSSantenna oraCHCGNSSChokeRingantenna. CHCA220GRGNSS GeodeticAntenna CHCC220GRGNSS ChokeRingAntenna OtherGNSSantennasmayhoweverbeusedensuringthattheantenna receivetheproperGNSSfrequenciesandoperatesateither3.3Vor7.1V withasignalgreaterthan40dBattheantennaport. 4.2.2. SYSTEMINSTALLATIONDIAGRAM ThetypicalinstallationdiagramoftheCHCN72GNSSreceiverconnected withCHCA220GRGNSSGeodeticAntenna,externalpowersupplyand networkcable. N72GNSSReferenceReceiverUserGuide Page 21 CHCA220GRGNSS GeodeticAntenna GNSSAntennaCable Adapter 4.SettingUptheReceiver NetworkCable CHCDataCable 1. Install the GNSS antenna at theappropriate location(see 4.1.5. Place theantennafortheguidelines);connecttheantennatotheTNCPlug SocketofN72viatheGNSSAntennaCable. 2. Power the N72 by external power source (e.g. mains supply) with AdapterviaCHCDataCable. A. Connectthe10pinLemoofCHCDataCabletoCOM1orCOM2of N72. B. PlugthemalejackconnectorofAdapterintothefemaleconnector ofCHCDataCable. C. ConnecttwolegplugsorthreelegplugsofAdaptertothemains supply. 3. ConnectthenetworkcabletotheRJ45jackofN72tolinktheN72with network. NOTE:Also,theN72canbepoweredbyexternalbatteryviaCHCData Cable.Andthepowersupplyvoltageshouldbecontrolledbetween 12to36VDC. N72GNSSReferenceReceiverUserGuide Page 22 Button Name Power 5. CONFIGURINGTHERECEIVER:KEYPADAND DISPLAY TheN72GNSSreferencereceiverfeaturesafrontpaneluserinterfacewitha keypadandatwolinealphanumericdisplay(seepage14).Thisinterface enablesyoutoconfiguremanyofthereceiversfeatureswithoutusingan externalcontrollerorcomputer. 5.1. BUTTONFUNCTIONS Usethebuttonsonthefrontpaneltoturnonorturnoffthereceiverandto checkorchangethereceiversettings. Function Turnonorturnoffthereceiver. Whenthereceiverisonlypoweredbyinternalbattery:
Toturnonthereceiver,pressandholdfor3seconds. Toturnoffthereceiver,pressandholdfor2seconds. Whenthereceiverispoweredbyexternalpowersupply:
Thereceiverwillbeonwithpower. Thereceiverwillbeturnedoffbyremovingthepowersupplyfrom theCHCcable. Escape Returntothepreviousscreenorcancelchangesyoumakeonascreen. OK Advancetothenextscreenoracceptchangesyoumakeonascreen. Up Movethecursorbetweenmultiplefieldsonascreen,ormakechanges. Down Movethecursorbetweenmultiplefieldsonascreen,ormakechanges. Left Movethecursorbetweencharactersinaneditablefield. Right Movethecursorbetweencharactersinaneditablefield. 5.2. HOMESCREEN Thisisthemainreceiverscreen. N72GNSSReferenceReceiverUserGuide Page 23 5.ConfiguringtheReceiver:KeypadandDisplay TheHomescreenshows:
Thenameoftheproduct. Thepositionsolution. Thenumberofsatellitesbeingtracked. Asapowersavingfeature,thefrontpanelgoesdarkafterashortperiodof inactivity.Ifthedisplayisnotlitandthereceiverison,pressANYBUTTON toreactivatethedisplay. 5.3. STATUSSCREENS Toreviewthereceiver'scurrentsettingsinthestatusscreens,press onthefrontpanel.Thestatusscreensshowthefollowing or information:
CurrentNetworkconnectionstate CurrentIPaddress(editable) CurrentIPmask(editable) CurrentGateway(editable) CurrentDNSServer(editable) CurrentHTTPport(editable) Theinternalbatterypowerremaining Receiverhardwareversionandsoftwareversion Receiverserialnumberandpartnumber Internalstoragememoryremaining N72GNSSReferenceReceiverUserGuide Page 24 5.ConfiguringtheReceiver:KeypadandDisplay 5.4. SETTINGUPTHERECEIVERASPARTOFANETHERNET CONFIGURATION UsethekeypadtosetupthereceiveraspartofanEthernetconfiguration. Press or tomovebetweendifferentstatusscreens,andthen press toentertheeditmode. 1. Turnonreceiverbypress orconnectthereceiverwithexternal powersupply. 2. Press or tomovetoIPAddrstatusscreen. 3. Press toeditIPaddress. 4. Press or toselectthecharactertoeditandthenpress or tochangeit. 5. Whenfinished,press
,andthentheSettingSuccessmessagewill appearonthedisplay. 6. Followthestep2tostep5toeditIPmask,gateway,DNSserverand HTTPportintheIPMASK,Gateway,DNSServerandHTTPPORTstatus screen,respectively. N72GNSSReferenceReceiverUserGuide Page 25 6. CONFIGURINGTHERECEIVER:OTHERTHAN KEYPADANDDISPLAY YoucanconfiguretheN72GNSSreferencereceivertoperformawidevariety offunctions.Thischapterdescribestheconfigurationmethodsotherthan thefrontpaneldisplay,andexplainswhenandwhyeachmethodisused. TheWinFlashutilitydescribedinthischapterisusedprimarilytoupdatethe receiverfirmware. 6.1. CONFIGURINGTHEETHERNETSETTINGS ThereceiverEthernetportconnectstoanEthernetnetwork,throughwhich youcanaccess,configure,andmonitorthereceiver.Noserialcable connectiontothereceiverisnecessary. ThereceiverhasthefollowingEthernetsettings:
IPaddress IPmask Gateway DNSserver HTTPport ThedefaultsettingfortheHTTPportis80:Thisportisnotassignedbythe network.HTTPport80isthestandardportforwebserversandenablesyou toconnecttothereceiverbyenteringonlythereceiversIPaddressinaweb browser. Forexample,usingport80:http://192.168.9.69 Ifthereceiverissettouseaportotherthan80,youmustentertheIP addressfollowedbytheportnumberinawebbrowser. Forexample,port9971:http://169.168.9.69:9971 UserscanconfiguretheEthernetsettingsthroughthefrontpanel(see5.4. SettingupthereceiveraspartofanEthernetconfiguration)andaweb server.Touseawebserver,thereceivermustbeconnectedtoanetwork andhaveavalidEthernetconfiguration. NOTE:ThereceivershouldbeconfiguredtheEthernetsettings throughthefrontpanelforitsfirstconnectiontotheInternet. N72GNSSReferenceReceiverUserGuide Page26 6.ConfiguringtheReceiver:OtherThanKeypadandDisplay 6.2. CONFIGURINGTHROUGHAWEBBROWSER Supportedbrowsers:
GoogleChrome MicrosoftInternetExplorerR version10,orhigher AppleSafari Toconnecttothereceiverthroughawebbrowser:
1. EntertheIPaddressofthereceiverintotheaddressbaroftheweb browser:
2. Thewebbrowserpromptsyoutoenterausernameandpassword:
Thedefaultloginaccountforthereceiveris:
LoginAccount:admin Password:password NOTE:Tickremembermeoption,andthenthebrowserwill remembertheLoginAccountandPasswordyouenteredforthenext timeyouenterthisloginscreen. 3. Onceyouareloggedin,thewebpageappearsasfollows:
N72GNSSReferenceReceiverUserGuide Page 27 6.ConfiguringtheReceiver:OtherThanKeypadandDisplay 6.2.1. CHANGINGTHESETTINGS Thewebinterfaceshowstheconfigurationmenusontheleftofthebrowser window,andthesettingontheright.Eachconfigurationmenucontainsthe relatedsubmenustoconfigurethereceiverandmonitorreceiver performance. Thissectiondescribeseachconfigurationmenu. Toviewthewebinterfaceinanotherlanguage,selectthecorresponding languagenamefromthedropdownlistintheupperrightcornerofthe interface. Currently,threelanguagesareavailable:
6.2.1.1. Statusmenu Thismenuprovidesaquicklinktoreviewthereceiver'spositioninformation, satellitestracked,runtime,currentdatalogstatus,currentoutputs,available memory,andmore. N72GNSSReferenceReceiverUserGuide Page 28 6.ConfiguringtheReceiver:OtherThanKeypadandDisplay Position Thispageshowstherelevantpositioninformationaboutthereceiver's positionsolutionwhichincludingtheposition,DOPvalues,satellites usedandtracked,andthereceiverclockinformation. Operation Listsseveralimportantitemstohelpyouunderstandhowthereceiveris beingusedanditscurrentoperatingcondition.Itemsincludethe identitiesofcurrentlytrackedsatellites,internalandexternalstorage usagerate,howlongthereceiverhasbeenoperational,stateofthe internalbattery,powersourcestate,filesbeinglogged,anddata streamsbeingoutput.Withthisinformation,itiseasytotellexactly whatfunctionsthereceiverisperforming:
N72GNSSReferenceReceiverUserGuide Page 29 6.ConfiguringtheReceiver:OtherThanKeypadandDisplay Googlemap TapthissubmenutoshowthelocationofthereceiveronGooglemap. N72GNSSReferenceReceiverUserGuide Page 30 6.ConfiguringtheReceiver:OtherThanKeypadandDisplay 6.2.1.2. Satellitesmenu UsetheSatellitesmenutoviewsatellitetrackingdetailsandenable/disable GPS,SBAS,GLONASS,BDSandGalileoconstellations.Thesemenusinclude tabularandgraphicaldisplaystoprovideallrequiredinformationonsatellite trackingstatus. SatelliteTrackTable Providesthestatusofsatellitestrackedingeneral,suchasthesatellite ID,satellitetype,attitudeangle,azimuthangle,L1SNR,L2SNR,L5SNR andenable/disablestatusofeachone. SatelliteTrackDiagram Thefollowingfigureisanexampleofsatellitetrackdiagrampage.Users candeterminethesatellitetypesandthecorrespondingSNRofLband carrierstobedisplayedinanycombination. N72GNSSReferenceReceiverUserGuide Page 31 6.ConfiguringtheReceiver:OtherThanKeypadandDisplay SkyPlot ThefollowingfigureisanexampleofSkyplotpage. SatelliteSettings Inthissubmenu,userscanenable/disableGPS,SBAS,GLONASS,BDS andGalileoconstellations. N72GNSSReferenceReceiverUserGuide Page 32 6.ConfiguringtheReceiver:OtherThanKeypadandDisplay 6.2.1.3. ReceiverSettingsmenu Usethismenutoconfiguresettingssuchastheantennatypeandheight, elevationmaskandPDOPsetting,thereferencestationcoordinates,receiver resettingandwebinterfacelanguage:
Introduction Thissubmenushowsthereceiverinformationandreferencestation information,includingantennarelatedinformation,elevationmask angle,referencestationworkmodeandposition,etc. AntennaParamSettings UsethisscreentoconfigurealloftheitemsrelatingtotheGNSS antenna.Youmustenterthecorrectvaluesforallantennarelatedfields, asthechoicesyoumakesignificantlyaffecttheaccuracyforloggeddata N72GNSSReferenceReceiverUserGuide Page 33 6.ConfiguringtheReceiver:OtherThanKeypadandDisplay andbroadcastRTKcorrectors:
ReferenceStationSettings Usethisscreentoconfiguresettingssuchasthestationcoordinates.You mustenteraccurateinformationinthesefields,asthisdatasignificantly affectstheaccuracyofloggeddatafilesandbroadcastRTKcorrectors. ForReferenceStationMode:
Therearethreeavailableoptions:AutoRover,AutoBaseand ManualBase. AutoRover:ThereceiverwillserveasRoveraftertherestart. AutoBase:ThereceiverwillserveasBaseaftertherestart,and thenbroadcastRTKcorrectorsbasedoncoordinatesobtained throughsinglepointpositioningautomatically. ManualBase:ThereceiverwillserveasBaseaftertherestart, andthenbroadcastRTKcorrectorsbasedonthecoordinates beforepoweroff. N72GNSSReferenceReceiverUserGuide Page 34 6.ConfiguringtheReceiver:OtherThanKeypadandDisplay ForReferenceLatitudeandReferenceLongitude:
Therearemainlythreemethodstoenterthereferencecoordinates andshownasfollows:
AcquireCurrentPosition:Clickthisbuttontoacquirecurrent positionobtainedthroughsinglepointpositioning automatically. ManualInput:Manuallyinputaknowncoordinates. FromCORS:AfterlogginginCORS,thereceiverwillobtaina coordinatesbasedonfixsolution.(See6.2.1.5.IOSettings menuformoredetailsaboutlogginginCORS.) ForSampleforAverage:
Userscandeterminethepositioninglimitandsamplingamount. Thepositioninglimitfallsintotwotypes:
SingleSolutionCoordinates:Collectthecoordinatesofreceiver obtainedthroughsinglepointpositioning. FixedSolutionCoordinates:Onlycollectcoordinatesof receiverbasedonfixsolution. Aftertheconfigurationofpositioninglimitandsamplingamount, click willbeservedasthecoordinatesofcurrentpositon. tocarryoutsamplingandaveragingtheresult Also,userscanclick tosavethecurentsettings. ReceiverReset Usethisscreentocompletelyorpartiallyresetthereceiver:
Languages N72GNSSReferenceReceiverUserGuide Page 35 6.ConfiguringtheReceiver:OtherThanKeypadandDisplay Usethisscreentoselectthewebinterfacelanguage:
6.2.1.4. DataRecordingmenu UsetheDataLoggingmenutosetupthereceivertologstaticGNSSdataand toviewtheloggingsettings.Youcanconfiguresettingssuchasobservable rate,recordingrate,continuouslogginglimit,andwhethertoautodeleteold filesifmemoryislow.ThismenualsoprovidesthecontrolsfortheFTPpush feature:
LogSettings Showsthedataloggingstatus,internalandexternalstorageusageand dataloggingstatusofeachstoragethread.Also,userscanconfigurethe dataloggingsettingsforeachstoragethread,includingrecordingname, savinglocation,storagelimit,storeformats,starttime,etc. N72GNSSReferenceReceiverUserGuide Page 36 6.ConfiguringtheReceiver:OtherThanKeypadandDisplay Toopenorcloseallthestoragethreads,clickthe[ON]or[OFF]button totherightofLogStatusfield. NOTEThe[ON]and[OFF]buttontotherightofLogStatusfieldare theMasterLogSwitch.Everystoragethreadcanlogdataonlywhen theMasterLogSwitchisON.Anduserscaneditthesettingsof storagethreadsonlywhentheMasterLogSwitchisOFF. Toeditthesettingsofeachstoragethread,clickthe[Modify]buttonto therightoftherequiredstoragethread,andthentheRecordingEdit screenappears:
N72GNSSReferenceReceiverUserGuide Page 37 6.ConfiguringtheReceiver:OtherThanKeypadandDisplay Inthisscreen,youcansetalldataloggingparameters,and determinewhethertherecordingfileswillbeaffectedbytheFTP Push.Theparametersaremainlyasfollows:
OnorOff:SelectYesorNotodeterminewhethertolog datawhentheMasterLogSwitchisON. RecordingName:Thenameofthisstoragethread. SampleInterval:Selecttheobservableratefromthedropdown list. StoreLocation:Determinewhethertostoreatinternalstorage orexternalstorage. StartTime:SetthestarttimeofdataloginUTC.SelectYesor Nooptionbelowtodeterminewhethertostartloggingfrom thesettime. DurationTime:Setthetimeintervalofrecording. Storage:Setthestoragelimitofthisthread. RecycleStorage:SelectYesorNotodeterminewhetherto autodeleteoldfilesifthestoragespaceisfull. StorageFormat:ThedefaultformatofrecordingfilesisHCN. FTPPush:DecidewhethertopushthestoredfilestotheFTP serverofyourchoice. Click tosavethesettingsandbacktotheLogSettings screen.Also,userscanclick settingsandbacktoLogSettingsscreen. toabandonthechanged NOTEtodeletetherecorddata,youcanremovealltheeightrecord databythetotalbuttonclearallaccounts.Alsoyoucandeleteeach recorddatabyclearbuttonundertheselectedthread. TodeletetherecordedfilesofANYstoragethread,clickthe[Clear]
buttontotherightoftherequiredstoragethread. TodeletetherecordedfilesofALLstoragethreads,click[ClearAll Accounts]button. FTPPushSettings UsethisscreentoconfigurethereceivertopushstoredfilestotheFTP serverofyourchoice.OnlyfilesthatareconfiguredtouseFTPpushare transmitted.Click[Modify]buttontotherightoftherequiredFTP serverandtheFTPPushSettingsscreenappears:
N72GNSSReferenceReceiverUserGuide Page 38 6.ConfiguringtheReceiver:OtherThanKeypadandDisplay FTPPushRecording Showstherelatedinformationabouttherecordedfiledthatbepushed. Anduserscanclick[ClearFtpSendLog]buttonintheupperrightcorner toclearthestatusofFTPPushoperations. DataDownload Inthissubmenu,userscandownloadthedatafilesthatrecordedinthe internalstoragethroughtheinternalFTPsite. 1. Clickthissubmenu,andthenthelogondialogueboxwillprompt youtoenterausernameandpassword:
ThedefaultlogonaccountfortheinternalFTPsiteis:
Username:ftp Password:ftp 2. Clickthedirectorynamedasrepotoviewanddownloadthefiles currentlystoredonthereceiver:
N72GNSSReferenceReceiverUserGuide Page 39 6.ConfiguringtheReceiver:OtherThanKeypadandDisplay 3. Tofindthefileneedtobedownloaded,clickthenameofstorage threadthedateoffilethatberecordedtheformatofthefile thenameofthetargetfile. 4. Todownloadafile,leftclickthenameofthetargetfile downloadthefileaccordingtotheprompts. 6.2.1.5. IOSettingsmenu UsetheIOSettingsmenutosetupallreceiveroutputsandinputs.The receivercanoutputCMR,RTCM,Rawdata,Ephemerisdata,GPGGA,GPGSV, onTCP/IP,UDP,serialport,orBluetoothports. IOSettings Thefollowingfigureshowsanexampleofthescreenthatappearswhen youselectthissubmenu. N72GNSSReferenceReceiverUserGuide Page 40 6.ConfiguringtheReceiver:OtherThanKeypadandDisplay Inthissubmenu,userscanconfigure5typesofinputandoutput settings. 1. RTKClient AfterconfiguringthesettingsofRTKclient,userscanlogonCORSor APIS.Clickthe[Connect]buttontotherighttheIOSettingsscreen willappearchooseoneoftheconnectionprotocolsamongtheNTRIP, APIS_BASEandAPIS_ROVERconfiguretherelatedparameters click tologonCORSorAPIS. ConnectionProtocol:NTRIP ConnectionProtocol:APIS_BASE N72GNSSReferenceReceiverUserGuide Page 41 6.ConfiguringtheReceiver:OtherThanKeypadandDisplay ConnectionProtocol:APIS_ROVER 2. TCP/UDPClient Clickthe[Connect]buttontotherightofrequiredTCP/UDPClient theIOSettingsscreenwillappearselecttheconnectionprotocol fromthedropdownlistentertheIPandPortofthetargetserver configuremessagesthatyouwanttooutputtothetargetserverclick tosaveandcompletetheconnection. N72GNSSReferenceReceiverUserGuide Page 42 6.ConfiguringtheReceiver:OtherThanKeypadandDisplay NOTE:IfthereceiverandserverareunderthesameLocalArea Network(LAN),userscanusetheIPaddressinLANoftheserverwith anyPort.However,ifthereceiverandserverareunderthetwo differentLAN,usersshouldusethepublicIPaddressoftheserver andconfiguretheportmappingoftheserver. 3. TCP/IPServer Clickthe[Connect]buttontotherightofrequiredTCP/IPServerthe IOSettingsscreenwillappearselectoneoftheconnectionprotocols betweenNTRIPandTCPconfiguretheotherrelatedparameters click tosavethesettingsandopentheserver. ConnectionProtocol:NTRIP ConnectionProtocol:TCP N72GNSSReferenceReceiverUserGuide Page 43 6.ConfiguringtheReceiver:OtherThanKeypadandDisplay 4. COMPort Clickthe[Settings]buttontotherightofrequiredCOMPortthe SerialPortSetupscreenwillappearselectBaudRateusedto transmitdataconfigurethemessagesthatyouwanttooutput throughtheserialportclick starttotransmit. tosavethesettingsand 5. Bluetooth Clickthe[Settings]buttontotherightofBluetooththeBluetoothSet screenwillappearconfigurethemessagesthatyouwanttotransmit throughBluetoothclick totransmit. tosavethesettingsandstart N72GNSSReferenceReceiverUserGuide Page 44 6.ConfiguringtheReceiver:OtherThanKeypadandDisplay 6.2.1.6. GPRSmenu NetworkInfo:networkinfoshowspowerstatus,networkmode,connection protocol,signalstrength,SIMstatusanddialingstatus. NetworksetmainlytosetGPRSmodelstatus,autostart,networkmode
(generallyusersselect[2G/3GAuto]),parametersettingsandsoon. 6.2.1.7. Radiosettingmenu RadioInfo:showsradiotype,radiopower,OTAbaudrate,radiofrequency andsoon. Radiosetting:tosetradiostatus,autostart,radiopower,frequencyandso on.Whenusingwebpagesettingaloneandtheradiofunctionisrequired, usersneedtoturnonRadioStatusandAutoStart.IftheradioinIOsettingis N72GNSSReferenceReceiverUserGuide Page 45 6.ConfiguringtheReceiver:OtherThanKeypadandDisplay requiredtobeused,thepremisesarealsoturningonradiostatus,setting appropriatefrequency,powerandsoon. 6.2.1.8. WANmenu UsethismenutocheckandconfiguretheEthernetsettings. NetworkInfo Thefollowingfigureshowsanexampleofthescreenthatappearswhen youselectthissubmenu:
NetworkSet UsethissubmenutoconfiguretherelatedparametersoftheNetwork, includingstaticIP,subnetmask,etc. N72GNSSReferenceReceiverUserGuide Page 46 6.ConfiguringtheReceiver:OtherThanKeypadandDisplay 6.2.1.9. Wifimenu UsethismenutocheckandconfiguretheWifisettings. WifiInfo Thefollowingfigureshowsanexampleofthescreenthatappearswhen youselectthissubmenu:
WifiSettings UsethissubmenutoconfiguretherelatedparametersoftheWiFi settings,includingWiFimode,encrypttype,password,etc. N72GNSSReferenceReceiverUserGuide Page 47 6.ConfiguringtheReceiver:OtherThanKeypadandDisplay 6.2.1.10. BluetoothSetmenu UsethismenutoconfigureBluetoothsettings. BluetoothSet Thefollowingfigureshowsanexampleofthescreenthatappearswhen youselectthissubmenu:
6.2.1.11. NetworkServicemenu UsethismenutoconfigurethereceiversHTTPport,andtheusernameand passwordofinternalFTPsite. HTTP N72GNSSReferenceReceiverUserGuide Page 48 6.ConfiguringtheReceiver:OtherThanKeypadandDisplay FTPService 6.2.1.12. Firmwaremenu Usethismenutocheckthecurrentfirmwareinformation,downloadthe systemlog,updatethereceiverfirmware,downloadorupdatethe configurationfileandregisterthereceiver. FirmwareInfo Usethissubmenutocheckthecurrentfirmwareinformation.The followingfigureshowsanexampleofthefirmwareinformation. SystemLog Usethissubmenutodownloadthesystemlogofthereceiver. FirmwareUpdate Usethissubmenutoloadnewfirmwaretothereceiveracrossthe network.Clickthe[Browse]buttontolocatetheupgradefileclick
[Confirm]buttontoconfirmtheselectedupgradingfileandstart N72GNSSReferenceReceiverUserGuide Page 49 6.ConfiguringtheReceiver:OtherThanKeypadandDisplay upgrading. NOTE:Itwilltakeabout2or3minutestocompletethefirmware upgrading. ConfigFile Inthissubmenu,userscandownloadtheconfigurationfilebyclicking buttonanddetermineasavingpathtodownloadthe configurationfile(.cfgfile).Also,userscanclickthe[Browse]buttonto locatetheexistingconfigurationfileclick[Confirm]buttontoconfirm theselectedfileandstartupdating. GNSSRegistration Usethissubmenutoregisterthereceiver.Pasteorentertheregistration codetotheRegistrationCodefieldclick[Registration]buttonto completetheregistration. N72GNSSReferenceReceiverUserGuide Page 50 6.ConfiguringtheReceiver:OtherThanKeypadandDisplay N72GNSSReferenceReceiverUserGuide Page 51 7. DEFAULTSETTINGANDCONFIGURATIONFILES Mostofthereceiversettingsarestoredinapplicationfiles.Thedefault applicationfile,Default.cfg,isstoredpermanentlyinthereceiver,and containsthefactorydefaultsettingsfortheN72GNSSreferencereceiver. Wheneverthereceiverisresettoitsfactorydefaults,thecurrentsettings
(storedinthecurrentconfigurationfile,copy.cfg)areresettothevaluesin thedefaultapplicationfile. TheN72GNSSreferencereceiverextendstheuseofconfigurationfilesto allowsimplifiedreceiversettingduplicationinmultiplereceivers.Thisis sometimesreferredtoasreceivercloningandisveryusefulwhenpreparing alargegroupofreceiversforafielddatacollectioncampaign. 7.1. DEFAULTRECEIVERSETTINGS Function SVEnable Generalcontrols Lemoport DB9port Logstatus Differentialdata Rawdata Ephemerisdata NMEA(GPGGA,GPGSV) Referenceposition Antenna Elevationmask PDOPmask Baudrate Format Flowcontrol Baudrate Format Flowcontrol Latitude Longitude Height Type MeasureMethod Height Factorydefaultvalues AllSVsenabled 0 6 9600 8None1 None 9600 8None1 None OFF OFF OFF OFF OFF 000.00000000 000.00000000 0.000 CHCA300GNSS 2.0000(Meter) AntennaPhaseCenter 7.1.1. RESETTINGTHERECEIVERTOFACTORYDEFAULTS LoginthewebpageofthereceivertapandunfoldtheReceiverReset menutaptheReceiverResetsubmenuclickthe buttontotherightofBacktoDefaultSettingfield. N72GNSSReferenceReceiverUserGuide Page52 7.DefaultSettingsandApplicationFiles 7.1.2. USINGCONFIGURATIONFILESTODUPLICATERECEIVERSETTINGS TheN72GNSSreferencereceiverallowstheextensiveuseofapplicationfiles inordertoretainauniquereceiverconfiguration.Withthisreceiver,youcan createaconfigurationfilethatincludesmostofthereceiver'sunique configurationsettings.Youcanthenupdatethatconfigurationfileontoone ormoreotherN72GNSSreferencereceiverstoquicklyconfigurethemto matchthereceiverwhichcreatesthatconfigurationfile. NOTE:Theconfigurationfileincludesmostoftheconfiguration settingsexceptIPAddress,IPMask,GatewayandDNSServer. Thisiscalledreceiverconfigurationcloningorcloning.Receivercloning greatlyreducesthetimerequiredtopreparealargegroupofreceiversfor fieldoperations. LoginthewebpageofthereceivertapandunfoldtheFirmwaremenu taptheConfigFilesubmenuclickthe[Browse]buttontolocatethe existingconfigurationfileclick[Confirm]buttontoconfirmtheselected fileandstartupdating. N72GNSSReferenceReceiverUserGuide Page 53 Feature Tracking 8. SPECIFICATIONS ThischapterdescribesthespecificationsfortheN72GNSSreferencereceiver. Specificationsaresubjecttochangewithoutnotice. 8.1. GNSSCHARACTERISTICS Specification 220channels GPS:L1C/A,L2C,L2E,L5 GLONASS:L1C/A,L1P,L2C/A,L2P SBAS:WAAS,EGNOS,MSAS Galileo:E1,E5A,E5B BDS:B1,B2 Pseudorangemeasurementwithhighprecision multicorrelator Verylownoisecarrierphasemeasurementswith<1mm precisionina1Hzbandwidth RealTimeKinematic(RTK) PostProcessingStatic Initializationtime Initializationreliability Horizontal:8mm+1ppmRMS Vertical:15mm+1ppmRMS Horizontal:2.5mm+0.5ppmRMS Vertical:5mm+0.5ppmRMS Typically<10s Typically>99.9%
8.2. COMMUNICATION Feature RJ45Jack DB9male COM1(10pinLEMOport) COM2(10pinLEMOport) USBport Bluetooth Protocols Specification Ethernet 3wireRS232,seeC.I.CHCN72receiverCOM1(10pinLEMOport) definitionfordetails 8wireRS232,seeC.II.CHCN72receiverCOM2(10pinLEMOport) definitionfordetails 9wireRS232,seeC.III.CHCN72receiverdb9maleconnector definitionfordetails TypeAUSBreceptacle,operatesinHostmode Fullyintegrated,fullysealed2.4GHzBluetoothwirelesstechnology Correctionformats:CMR,CMR+,SCMR,RTCM2.3,3.0 Observables:RT17,RT27,RTCM3.X Position/StatusI/O:NMEA0183V2.30(GPGGA&GPGSV) N72GNSSReferenceReceiverUserGuide Page54 8.Specifications 8.3. PHYSICAL Feature Size Weight Operatingtemperature Storagetemperature Humidity Waterproofanddust proof Shock Specification 265x143x68mm(10.4x5.6x2.7in) 2.1kg(74oz) 40Cto+65C(40Fto+149F) 45Cto+80C(49Fto+176F) 100%condensation TestedtoIP67;waterprooffortemporaryimmersiontoadepthof1m
(3.28ft)for30minutes;dustproof Designedtosurvivea1m(3.28ft)dropontoconcrete 8.4. ELECTRICAL Feature Powerconsumption Internal External Operationtimeon internalbattery Feature Frontpaneldisplay Receivertype Antennatype Specification 4Wnominal,dependentonusersettings Integratedinternalbattery7.4V,10000mAhr,Lithiumion InternalbatterycanoperateasaUPSintheeventofexternal powersourceoutage Internalbatterywillchargefromtheexternalpowersourcewhen theinternalbatteryisnotfullycharged Powersourcesupply(Internal/External)ishotswapcapableinthe eventofpowersourceremovalorcutoff PowerinputonLemoportsis12VDCto36VDCexternalpower input Receiverwillautopoweronwhenconnectedtoexternalpower withvoltageabove11V Upto17hourscontinuousoperation,dependentonusersetting 8.5. GENERAL VacuumFluorescentDisplay(VFD),16charactersby2rows PowerbuttonandindicationLED Escape,OKand4arrowkeys(up,down,left,right) Specification GNSSreferencereceiver CHCA220GRGNSSGeodeticantennaorCHCC220GRGNSSChoke Ringantennapreferred. Othermodelssupported. N72GNSSReferenceReceiverUserGuide Page 55 8.Specifications 8.6. DATASTORAGE Feature Internalstorage Externalstorage Storagemethod Dataformat Datadownload Specification 16GB SupportingUSBdriveorportableharddrive 8threadlogging,circulatingdatalogging HCN,RINEX,originalbinarydata FTPpush,onlinedownload,storageonanexternalUSBdevices N72GNSSReferenceReceiverUserGuide Page 56 A. UPGRADINGTHERECEIVERFIRMWARE Thereceiverissuppliedwiththelatestversionofthereceiverfirmware alreadyinstalled.Ifalaterversionofthefirmwarebecomesavailable,use theUSBdevicetoupgradethefirmwareonyourreceiver.Forthelatest firmwareresource,pleaseconsultyourlocalCHCdealer. Youcanalsoupgradethereceiverthroughthewebinterface.Thefirmware filerequiredtoupgradethereceiverthroughtheWebinterfaceislocatedin thefolderwheretheusersavesthefile.Thefiletyperequiredistheformat update_n72_e_vXXXXX_bYYYYMMDD.binwhereXXXXXrepresentsthe versionoffirmwareandYYYYMMDDrepresentsthefirmwareencapsulation date. A.I. THEWINFLASHUTILITY TheWinFlashutilitycommunicateswithCHCproductstoperformvarious functionsincluding:
loadorverifyGPSsoftwareofthemainboard updateorverifythereceiveroptions Formoreinformation,onlinehelpisalsoavailablewhenusingtheWinFlash utility. A.I.i. INSTALLINGTHEWINFLASHUTILITY YoucandownloadtheWinFlashutilityfromtheTrimblewebsite.This selfextractingexecutableguidesyouthroughthesoftwareinstallation process. A.II. UPGRADINGTHERECEIVERFIRMWARE A.II.i. UPGRADINGTHROUGHUSBPORT 1. Copythefirmwarefiletotherootdirectoryofexternalstoragedevice suchasUSBdrive,portableharddrive. 2. ConnecttheexternalstoragedevicewithreceiverthroughUSBport. 3. Restartthereceiverandthenthescreenwillpromptyouwhetherto upgradethefirmware. PressOKbuttontoupgradethefirmware. 4. 5. Whentheupgradingiscompleted,thereceiverwillberestartedand thescreenwillpromptyouwhethertoupgradethefirmwareagain. Pressoneofthearrowkeystoquittheupgradingandthenremovethe externalstoragedevice. 6. N72GNSSReferenceReceiverUserGuide Page57 A.UpgradingtheReceiverFirmware A.II.ii. UPGRADINGTHROUGHABROWSER Pleaseconnecttothereceiverthroughawebbrowseraccordingto6.2. Configuringthroughawebbrowser,andthenreferto6.2.1.10Firmware menuFirmwareUpdatefordetailoperationsteps. NOTE:Afterthereceiverfirmwareupgrading,theIPinformationmay bechanged.PleaseconfirmtheIPsettingofthereceiverbeforeusing it. N72GNSSReferenceReceiverUserGuide Page 58 B. TROUBLESHOOTING Usethisappendixtoidentifyandsolvecommonproblemsthatmayoccur duringtheuseofthereceiver. PleasereadthissectionbeforeyoucontactCHCTechnicalSupport. B.I. RECEIVERISSUES Thissectiondescribessomepossiblereceiverissues,possiblecauses,and howtosolvethem. Issue Thereceiverdoes notturnon. Possiblecause Externalpoweristoo low. Internalpoweristoo low. Externalpowerisnot properlyconnected. Faultypowercable. Receiverdoesnot logdata. Thereceiverisnot responding. Thereference stationreceiveris notbroadcasting. Thereceiveristracking fewerthanfour satellites. Receiverneedsasoft reset. Portsettingsbetween referencereceiverand radioareincorrect. Faultycablebetween receiverandradio. Nopowertoradio. Thereceiverisnot receivingsatellite signals TheGNSSantennacable isloose. Thecableisdamaged. Solution Checkthechargeontheexternalbatteryand,ifapplicable, checkthefuse. Checkthechargeontheinternalbattery. CheckthattheLemoconnectorisseatedcorrectlyandthat thecableissecuredtothereceiver. Checkforbrokenorbentpinsintheconnector. Checkthatyouareusingthecorrectcableforthe connectionbetweenLemoportandexternalpowersupply. Checkthatthecorrectexternalpowersupplyisconnected toaparticularLemoport. Checkpinoutswithamultimetertoensureinternalwiring isintact. Waituntilthereceiverdisplayshowsthatmorethanfour satellitesarebeingtracked. Turnoffthereceiverandthenturnitbackonagain. ChecktheportsettingsforthereceiverbyusingtheWeb interface.Checkthattheradioportsarecorrectlysetup. Tryadifferentcable. Examinetheportsformissingpins. Useamultimetertocheckpinouts. Iftheradiohasitsownpowersupply,checkthechargeand connections. MakesurethattheGNSSantennacableistightlyseatedin theantennaconnectorontheGNSSantenna. Checkthecableforanysignsofdamage.Adamagedcable caninhibitsignaldetectionfromtheantennaatthe receiver. N72GNSSReferenceReceiverUserGuide Page59 TheGNSSantennaisnot inclearlineofsightto thesky. MakesurethattheGNSSantennaislocatedwithaclear viewofthesky. Restartthereceiverasalastresort(turnoffandthenturn itonagain). B.Troubleshooting N72GNSSReferenceReceiverUserGuide Page 60 C. COMMUNICATIONPORTSDEFINITION C.I. CHCN72RECEIVERCOM1(10PINLEMOPORT) DEFINITION PIN 1 2 3 4 5 6 7 8 9 10 SignalName RXD TXD PWR PWR PWR,GND PWR,GND Signal NotUsed NotUsed Signal Description RS232RX(passthroughtothemainboardthroughthispin) RS232TX(passthroughtothemainboardthroughthispin) ExternalPowerInput(positivepole) ExternalPowerInput(positivepole) ExternalPowerInput(negativepole),ExternalPowerGround ExternalPowerInput(negativepole),ExternalPowerGround PPSsignaloutput EVENTsignalinput C.II. CHCN72RECEIVERCOM2(10PINLEMOPORT) DEFINITION PIN 1 2 3 4 5 SignalName RXD TXD PWR PWR PWR,GND Description RS232RX(receivedatathroughthispin) RS232TX(transmitdatathroughthispin) ExternalPowerInput(positivepole) ExternalPowerInput(positivepole) ExternalPowerInput(negativepole),ExternalPowerGround N72GNSSReferenceReceiverUserGuide Page61 C.CommunicationPortsDefinition 6 7 8 9 10 PWR,GND VBUS DM DP NotUsed ExternalPowerInput(negativepole),ExternalPowerGround USBdevice USBdevice USBdevice C.III. CHCN72RECEIVERDB9MALECONNECTORDEFINITION PIN 1 2 3 4 5 6 7 8 9 SignalName NotUsed TXD RXD NotUsed GND NotUsed NotUsed NotUsed NotUsed Description RS232TX(transmitdatathroughthispin) RS232RX(receivedatathroughthispin) ExternalPowerGround N72GNSSReferenceReceiverUserGuide Page 62 basestation carrier carrierfrequency carrierphase CMR CMR+
DGPS differential correction DifferentialGPS DOP dualfrequency GPS EGNOS D. GLOSSARY Alsocalledreferencestation.Abasestationinconstruction,isareceiverplacedat aknownpointonajobsitethattracksthesamesatellitesasanRTKrover,and providesarealtimedifferentialcorrectionmessagestreamthroughradiotothe rover,toobtaincentimeterlevelpositionsonacontinuousrealtimebasis.Abase stationcanalsobeapartofavirtualreferencestationnetwork,oralocationat whichGPSobservationsarecollectedoveraperiodoftime,forsubsequent postprocessingtoobtainthemostaccuratepositionforthelocation. Aradiowavehavingatleastonecharacteristic(suchasfrequency,amplitude,or phase)thatcanbevariedfromaknownreferencevaluebymodulation. Thefrequencyoftheunmodulatedfundamentaloutputofaradiotransmitter.The GPSL1carrierfrequencyis1575.42MHz. ThetimetakenfortheL1orL2carriersignalgeneratedbythesatellitetoreach theGPSreceiver.Measuringthenumberofcarrierwavesbetweenthesatellite andreceiverisaveryaccuratemethodofcalculatingthedistancebetweenthem. CompactMeasurementRecord.ArealtimemessageformatdevelopedbyTrimble forbroadcastingcorrectionstootherTrimblemainboardreceivers.CMRisamore efficientalternativetoRTCM. SeerealtimedifferentialGPS. DifferentialcorrectionistheprocessofcorrectingGPSdatacollectedonarover withdatacollectedsimultaneouslyatabasestation.Becausethebasestationis onaknownlocation,anyerrorsindatacollectedatthebasestationcanbe measured,andthenecessarycorrectionsappliedtotheroverdata. Differentialcorrectioncanbedoneinrealtime,orafterthedatahasbeen collectedbypostprocessing. SeerealtimedifferentialGPS. DilutionofPrecision.AmeasureofthequalityofGPSpositions,basedonthe geometryofthesatellitesusedtocomputethepositions.Whensatellitesare widelyspacedrelativetoeachother,theDOPvalueislower,andpositionaccuracy isgreater.Whensatellitesareclosetogetherinthesky,theDOPishigherandGPS positionsmaycontainagreaterleveloferror. PDOP(PositionDOP)indicatesthethreedimensionalgeometryofthesatellites. OtherDOPvaluesincludeHDOP(HorizontalDOP)andVDOP(VerticalDOP),which indicatetheaccuracyofhorizontalmeasurements(latitudeandlongitude)and verticalmeasurementsrespectively.PDOPisrelatedtoHDOPandVDOPas follows:
PDOP=HDOP+VDOP AtypeofreceiverthatusesbothL1andL2signalsfromGPSsatellites.A dualfrequencyreceivercancomputemoreprecisepositionfixesoverlonger distancesandundermoreadverseconditionsbecauseitcompensatesfor ionosphericdelays. EuropeanGeostationaryNavigationOverlayService.Asatellitebased augmentationsystem(SBAS)thatprovidesafreetoairdifferentialcorrection serviceforGPS. EGNOSistheEuropeanequivalentofWAAS,whichisavailableintheUnited N72GNSSReferenceReceiverUserGuide Page63 elevationmask ephemeris/
ephemerides epoch firmware GLONASS GNSS GSOF HDOP L1 L2 L5 MSAS multifrequency GPS multipath NMEA PDOP D.Glossary States. Theanglebelowwhichthereceiverwillnottracksatellites.Normallysetto10 degreestoavoidinterferenceproblemscausedbybuildingsandtrees,and multipatherrors. Alistofpredicted(accurate)positionsorlocationsofsatellitesasafunctionof time.Asetofnumericalparametersthatcanbeusedtodetermineasatellites position. Availableasbroadcastephemerisoraspostprocessedpreciseephemeris. ThemeasurementintervalofaGPSreceiver.Theepochvariesaccordingtothe measurementtype:forrealtimemeasurementitissetatonesecond;for postprocessedmeasurementitcanbesettoarateofbetweenonesecondand oneminute.Forexample,ifdataismeasuredevery15seconds,loadingdatausing 30secondepochsmeansloadingeveryalternatemeasurement. Theprograminsidethereceiverthatcontrolsreceiveroperationsandhardware. GlobalOrbitingNavigationSatelliteSystem.GLONASSisaSovietspacebased navigationsystemcomparabletotheAmericanGPSsystem.Theoperational systemconsistsof21operationaland3nonoperationalsatellitesin3orbit planes. GlobalNavigationSatelliteSystem. GeneralSerialOutputFormat.ATrimbleproprietarymessageformat. HorizontalDilutionofPrecision.HDOPisaDOPvaluethatindicatestheaccuracy ofhorizontalmeasurements.OtherDOPvaluesincludeVDOP(verticalDOP)and PDOP(PositionDOP). UsingamaximumHDOPisidealforsituationswhereverticalprecisionisnot particularlyimportant,andyourpositionyieldwouldbedecreasedbythevertical componentofthePDOP(forexample,ifyouarecollectingdataundercanopy). TheprimaryLbandcarrierusedbyGPSsatellitestotransmitsatellitedata. ThesecondaryLbandcarrierusedbyGPSsatellitestotransmitsatellitedata. ThethirdLbandcarrierusedbyGPSsatellitestotransmitsatellitedata.L5will provideahigherpowerlevelthantheothercarriers.Asaresult,acquiringand trackingweaksignalswillbeeasier. MTSATSatelliteBasedAugmentationSystem.Asatellitebasedaugmentation system(SBAS)thatprovidesafreetoairdifferentialcorrectionserviceforGPS. MSASistheJapaneseequivalentofWAAS,whichisavailableintheUnitedStates. Atypeofreceiverthatusesmultiplecarrierphasemeasurements(L1,L2,andL5) fromdifferentsatellitefrequencies. Interference,similartoghostsonatelevisionscreenthatoccurswhenGPSsignals arriveatanantennahavingtraverseddifferentpaths.Thesignaltraversingthe longerpathyieldsalargerpseudorangeestimateandincreasestheerror.Multiple pathscanarisefromreflectionsoffthegroundoroffstructuresneartheantenna. NationalMarineElectronicsAssociation.NMEA0183definesthestandardfor interfacingmarineelectronicnavigationaldevices.Thisstandarddefinesanumber of'strings'referredtoasNMEAstringsthatcontainnavigationaldetailssuchas positions.MostCHCGPSreceiverscanoutputpositionsasNMEAstrings. PositionDilutionofPrecision.PDOPisaDOPvaluethatindicatestheaccuracyof N72GNSSReferenceReceiverUserGuide Page 64 D.Glossary threedimensionalmeasurements.OtherDOPvaluesincludeVDOP(verticalDOP) andHDOP(HorizontalDilutionofPrecision). UsingamaximumPDOPvalueisidealforsituationswherebothverticaland horizontalprecisionareimportant. Postprocessingistheprocessingofsatellitedataafterithasbeencollected,in ordertoeliminateerror.Thisinvolvesusingcomputersoftwaretocomparedata fromtheroverwithdatacollectedatthebasestation. AlsoknownasrealtimedifferentialcorrectionorDGPS.RealtimedifferentialGPS istheprocessofcorrectingGPSdataasyoucollectit.Correctionsarecalculatedat abasestationandthensenttothereceiverthrougharadiolink.Astherover receivesthepositionitappliesthecorrectionstogiveyouaveryaccurateposition inthefield. Mostrealtimedifferentialcorrectionmethodsapplycorrectionstocodephase positions.RTKusescarrierphasemeasurements. WhileDGPSisagenericterm,itscommoninterpretationisthatitentailstheuse ofsinglefrequencycodephasedatasentfromaGPSbasestationtoaroverGPS receivertoprovidesubmeterpositionaccuracy.Theroverreceivercanbeata longrange(greaterthan100km(62miles))fromthebasestation. Seebasestation AroverisanymobileGPSreceiverthatisusedtocollectorupdatedatainthe field,typicallyatanunknownlocation. RadioTechnicalCommissionforMaritimeServices.Acommissionestablishedto defineadifferentialdatalinkfortherealtimedifferentialcorrectionofrovingGPS receivers.TherearethreeversionsofRTCMcorrectionmessages.AllCHCGPS receiversuseVersion2protocolforsinglefrequencyDGPStypecorrections. CarrierphasecorrectionsareavailableonVersion2,oronthenewerVersion3 RTCMprotocol,whichisavailableoncertainCHCdualfrequencyreceivers.The Version3RTCMprotocolismorecompactbutisnotaswidelysupportedas Version2. Realtimekinematic.ArealtimedifferentialGPSmethodthatusescarrierphase measurementsforgreateraccuracy. SatelliteBasedAugmentationSystem.SBASisbasedondifferentialGPS,but appliestowidearea(WAAS/EGNOSandMSAS)networksofreferencestations. Correctionsandadditionalinformationarebroadcastviageostationarysatellites. SNR.Thesignalstrengthofasatelliteisameasureoftheinformationcontentof thesignal,relativetothesignalsnoise.ThetypicalSNRofasatelliteat30 elevationisbetween47and50dBHz.ThequalityofaGPSpositionisdegradedif theSNRofoneormoresatellitesintheconstellationfallsbelow39. ThesatelliteskyplotconfirmsreceptionofadifferentiallycorrectedGPSsignaland displaysthenumberofsatellitestrackedbytheGPSreceiver,aswellastheir relativepositions. Seesignaltonoiseratio UniversalTimeCoordinated.Atimestandardbasedonlocalsolarmeantimeat theGreenwichmeridian. VirtualReferenceStation.AVRSsystemconsistsofGNSShardware,software,and N72GNSSReferenceReceiverUserGuide Page 65 postprocessing realtime differential GPS referencestation rover RTCM RTK SBAS signaltonoise ratio skyplot SNR UTC VRS WAAS D.Glossary communicationlinks.Itusesdatafromanetworkofreferencestationstoprovide correctionstoeachroverthataremoreaccuratethancorrectionsfromasingle basestation. TostartusingVRScorrections,theroversendsitspositiontotheVRSserver.The VRSserverusesthereferencestationdatatomodelsystematicerrors(suchas ionosphericnoise)attheroverposition.ItthensendsRTCMorCMRcorrection messagesbacktotherover. WideAreaAugmentationSystem.WAASwasestablishedbytheFederalAviation Administration(FAA)forflightandapproachnavigationforcivilaviation.WAAS improvestheaccuracyandavailabilityofthebasicGPSsignalsoveritscoverage area,whichincludesthecontinentalUnitedStatesandoutlyingpartsofCanada andMexico. TheWAASsystemprovidescorrectiondataforvisiblesatellites.Correctionsare computedfromgroundstationobservationsandthenuploadedtotwo geostationarysatellites.ThisdataisthenbroadcastontheL1frequency,andis trackedusingachannelontheGPSreceiver,exactlylikeaGPSsatellite. UseWAASwhenothercorrectionsourcesareunavailable,toobtaingreater accuracythanautonomouspositions.FormoreinformationonWAAS,refertothe FAAwebsiteathttp://gps.faa.gov. TheEGNOSserviceistheEuropeanequivalentandMSASistheJapanese equivalentofWAAS. N72GNSSReferenceReceiverUserGuide Page 66 CHCShanghaiHuaCeNavigationTechnologyLtd. BuildingC,NO.599GaojingRoad, QingpuDistrict,201702Shanghai,China Tel:+862154260273 Fax:+862164950963 Email:sales@chcnav.com|support@chcnav.com Website:www.chcnav.com
frequency | equipment class | purpose | ||
---|---|---|---|---|
1 | 2015-09-08 | 2412 ~ 2462 | DTS - Digital Transmission System | Original Equipment |
2 | 2402 ~ 2480 | DSS - Part 15 Spread Spectrum Transmitter | ||
3 | 1852.4 ~ 1907.6 | PCB - PCS Licensed Transmitter | ||
4 | JBP - Part 15 Class B Computing Device Peripheral |
app s | Applicant Information | |||||
---|---|---|---|---|---|---|
1 2 3 4 | Effective |
2015-09-08
|
||||
1 2 3 4 | Applicant's complete, legal business name |
Shanghai Huace Navigation Technology LTD.
|
||||
1 2 3 4 | FCC Registration Number (FRN) |
0022641393
|
||||
1 2 3 4 | Physical Address |
Building D,599 Gaojing Road,Qingpu District
|
||||
1 2 3 4 |
Shanghai, N/A
|
|||||
1 2 3 4 |
China
|
|||||
app s | TCB Information | |||||
1 2 3 4 | TCB Application Email Address |
T******@TIMCOENGR.COM
|
||||
1 2 3 4 |
t******@timcoengr.com
|
|||||
1 2 3 4 | TCB Scope |
A4: UNII devices & low power transmitters using spread spectrum techniques
|
||||
1 2 3 4 |
B1: Commercial mobile radio services equipment in the following 47 CFR Parts 20, 22 (cellular), 24,25 (below 3 GHz) & 27
|
|||||
1 2 3 4 |
A1: Low Power Transmitters below 1 GHz (except Spread Spectrum), Unintentional Radiators, EAS (Part 11) & Consumer ISM devices
|
|||||
app s | FCC ID | |||||
1 2 3 4 | Grantee Code |
SY4
|
||||
1 2 3 4 | Equipment Product Code |
A02003
|
||||
app s | Person at the applicant's address to receive grant or for contact | |||||
1 2 3 4 | Name |
C**** S******
|
||||
1 2 3 4 | Telephone Number |
+86-2******** Extension:
|
||||
1 2 3 4 | Fax Number |
+86-2********
|
||||
1 2 3 4 |
s******@huacenav.com
|
|||||
app s | Technical Contact | |||||
n/a | ||||||
app s | Non Technical Contact | |||||
n/a | ||||||
app s | Confidentiality (long or short term) | |||||
1 2 3 4 | Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: | Yes | ||||
1 2 3 4 | Long-Term Confidentiality Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: | No | ||||
if no date is supplied, the release date will be set to 45 calendar days past the date of grant. | ||||||
app s | Cognitive Radio & Software Defined Radio, Class, etc | |||||
1 2 3 4 | Is this application for software defined/cognitive radio authorization? | No | ||||
1 2 3 4 | Equipment Class | DTS - Digital Transmission System | ||||
1 2 3 4 | DSS - Part 15 Spread Spectrum Transmitter | |||||
1 2 3 4 | PCB - PCS Licensed Transmitter | |||||
1 2 3 4 | JBP - Part 15 Class B Computing Device Peripheral | |||||
1 2 3 4 | Description of product as it is marketed: (NOTE: This text will appear below the equipment class on the grant) | GNSS Receiver | ||||
1 2 3 4 | GNSS receiver | |||||
1 2 3 4 | Related OET KnowledgeDataBase Inquiry: Is there a KDB inquiry associated with this application? | No | ||||
1 2 3 4 | Modular Equipment Type | Does not apply | ||||
1 2 3 4 | Purpose / Application is for | Original Equipment | ||||
1 2 3 4 | Composite Equipment: Is the equipment in this application a composite device subject to an additional equipment authorization? | Yes | ||||
1 2 3 4 | Related Equipment: Is the equipment in this application part of a system that operates with, or is marketed with, another device that requires an equipment authorization? | No | ||||
1 2 3 4 | Grant Comments | Power listed is conducted. The antenna installation and operating configurations of this transmitter, including any applicable antenna gain and cable loss must satisfy MPE categorical Exclusion Requirements of §2.1091. The transmitter must not be co-located or operated in conjunction with any other antenna or transmitter. Users and installers must be provided with antenna installation instructions and transmitter operating conditions for satisfying RF exposure compliance. | ||||
1 2 3 4 | Power listed is conducted. | |||||
1 2 3 4 | Power listed is EIRP for Part 24 and ERP for Part 22. The antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operated in conjunction with any other antenna or transmitter. The antenna installation and operating configurations of this transmitter, including any applicable source-based time-averaging duty factor, antenna gain, and cable loss must satisfy MPE categorical Exclusion Requirements of Part 2.1091. Users must be provided with instructions and transmitter operating conditions for satisfying RF exposure compliance. RF exposure compliance may need to be addressed at the time of licensing, as required by the responsible FCC bureau(s), including antenna co-location requirements of Part 1.1307(b)(3). | |||||
1 2 3 4 | Is there an equipment authorization waiver associated with this application? | No | ||||
1 2 3 4 | If there is an equipment authorization waiver associated with this application, has the associated waiver been approved and all information uploaded? | No | ||||
app s | Test Firm Name and Contact Information | |||||
1 2 3 4 | Firm Name |
UniLab (Shanghai) Co., Ltd.
|
||||
1 2 3 4 | Name |
W****** R****
|
||||
1 2 3 4 | Telephone Number |
86-21********
|
||||
1 2 3 4 | Fax Number |
86-21********
|
||||
1 2 3 4 |
w******@unilab.cn
|
|||||
Equipment Specifications | |||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Line | Rule Parts | Grant Notes | Lower Frequency | Upper Frequency | Power Output | Tolerance | Emission Designator | Microprocessor Number | |||||||||||||||||||||||||||||||||
1 | 1 | 15C | CC | 2412.00000000 | 2462.00000000 | 0.0300000 | |||||||||||||||||||||||||||||||||||
Line | Rule Parts | Grant Notes | Lower Frequency | Upper Frequency | Power Output | Tolerance | Emission Designator | Microprocessor Number | |||||||||||||||||||||||||||||||||
2 | 1 | 15C | 2402.00000000 | 2480.00000000 | 0.0025000 | ||||||||||||||||||||||||||||||||||||
Line | Rule Parts | Grant Notes | Lower Frequency | Upper Frequency | Power Output | Tolerance | Emission Designator | Microprocessor Number | |||||||||||||||||||||||||||||||||
3 | 1 | 22H | 824.2 | 848.8 | 1.34 | 44.71 Hz | 272KGXW | ||||||||||||||||||||||||||||||||||
3 | 2 | 22H | 824.2 | 848.8 | 1 | 40.72 Hz | 254KG7W | ||||||||||||||||||||||||||||||||||
3 | 3 | 24E | 1850.2 | 1908.8 | 0.74 | 41.57 Hz | 246KGXW | ||||||||||||||||||||||||||||||||||
3 | 4 | 24E | 1850.2 | 1908.8 | 0.68 | 38.21 Hz | 251KG7W | ||||||||||||||||||||||||||||||||||
3 | 5 | 22H | 826.4 | 846.6 | 0.155 | 30.2 Hz | 4M08F9W | ||||||||||||||||||||||||||||||||||
3 | 6 | 24E | 1852.4 | 1907.6 | 0.19 | 37.6 Hz | 4M08F9W | ||||||||||||||||||||||||||||||||||
Line | Rule Parts | Grant Notes | Lower Frequency | Upper Frequency | Power Output | Tolerance | Emission Designator | Microprocessor Number | |||||||||||||||||||||||||||||||||
4 | 1 | 15B | CC |
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