257 . What is NVR and their types of NVR_.pdf

A network video recorder (NVR) is a device that includes software. All videos shot by cameras connected to the network will be gathered and stored by this system.

1. WhatisNVR?andtheirtypesofNVR?
Anetworkvideorecorder(NVR)isadevicethatincludessoftware.Allvideosshotbycameras
connectedtothenetworkwillbegatheredandstoredbythissystem.Thesevideosarerecorded
byNVRontomassstoragedevices.Itlacksspecialisedvideocapturehardware,incontrastto
otherstoragedevices,andthesoftwareisrunonaseparatedevice.NVRsarefrequentlyused
withIPvideosurveillancesystems,andtheymaystreamaudioandvideodataoverasingle
cable.HenceICFixServiceprovidesCCTVtrainingcoursesinChennai.
TypesofNetworkVideoRecorders:Dependingonhowtheyarepowered,networkvideo
recorders(NVR)canbedividedintotwocategories.
PoENVR:PoENVRhasPoEportsandisonlyabletoworkwithcamerasthatadheretothe
PoEstandards.ThesecamerasareconnectedtotheNVR'sPoEport.Theserecordersdon't
needadifferentadapter.ACAT5E/6cablecanbeusedtolinkthecameratotheNVR.Thiswill
providepowertothecameraandenabledata,audio,andvideotransmissionviaasinglewire.
Non-PoENVR:TheseNVRslackportsontherearpanelforattachingthecamera.Toconnect
tothenetworkcamera,youneedaPoEswitchorexternalpowersupply.Themajorityof
non-PoENVRshavebuilt-inscanfeaturesthatcanlocatethenetwork'scameras.
WithorwithoutaPoweroverEthernet(PoE)orNon-PoEswitch,NVRcanbeconfigured.With
camerasthatsupportPoE,PoEswitchesareused.Therearenoseparatepoweradapters
neededforthecamerasbecausetheyareconnectedtotheNVR'sPoEports.Modelswithout
PoEdon'thaveanyconnectorsforconnectingcameras.Theydo,however,includeaninternal
scanfunctionalitythatcanscancamerasconnectedtothesamenetwork.PoEmodelsalso
employthescanfeature.
Youwillneedafewpartsandaccessories,includingapowercable,anEthernetcable,SATA
cables,securityscrews,andapowersupplycableforharddriveinstallation,toconfigurethe
NVRforIPcameraonthenetworkusingaPoEswitch.Themajorityofmanufacturersoffer
technicalsupportfortheconnectionprocedureorincludeaneasy-to-followinstructionbooklet
withtheproductanditsaccessories.
NVRanddigitalvideorecorders(DVR)areextremelysimilar.WhileNVRistypicallyusedwith
IPcameras,DVRistypicallyusedwithanaloguecameras.ItfunctionsessentiallyasanIP
camera'sDVR.
EthernetswitchesforIPsurveillanceareavailableinavarietyofconfigurations.Ahardware
configurationsetsthestageforconfiguration.Youcanproceedwiththehardwareconfiguration
asfollows:

2. ●ConnecttheEthernetwireattherearoftheNVRusingtheoneyoutookfromtherouter.
VerifytheNVR'sInternetconnection.
●EthernetcablesshouldbeusedtoconnectIPcamerastoPoENVR.TheNVRcaneasily
powertheIPcamerasbecauseitisPoEtechnologyenabled.
●UseaVGAoranHDMIcabletoconnecttheNVRtotheTVormonitor.Makesureyou
connecttheTVormonitorusingtheappropriateinput—VGA,HDMI1,orHDMI2.
Whenthesestepsarecorrectlycarriedout,connectinganNVRandanIPcameraissimple.The
nextphaseinconfigurationissoftwaresetup,whichcanbecompletedquicklybyadheringto
themanufacturer'sinstructions.
ThebackpanelofanNVRwithoutaPoEswitchisdevoidofEthernetports.EachIPcamerais
poweredbyanexternalpowersupplyoranexternalPoEswitch.SimilartoNVRwithaPoE
switch,hardwareconfigurationisthefirststepinconfiguringNVRforIPcamerawithoutaPoE
switch.Here'swhattodonext:
●UseanEthernetwiretolinktherouter'sLANporttotheexternalPoEswitch.The
non-PoENVRandroutershouldthenbeconnected.
●AllIPcamerasshouldbeconnectedtothePoEswitch'sRJ45portsusingEthernet
cables.ThePoEswitchwillhandlevideotransmissioninadditiontoprovidingpower.
●ConnectthemonitorandNVRwithanHDMIorVGAconnection.Alwayschoosethe
appropriateinputwhencreatingaconnection.
OnlyafterusersaddthecamerastotheNVRwillrecordingbemadepossible.Byusingthe
instructionsintheuserhandbookasaguide,thisissimpletoaccomplish.
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