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LanScaper
TM
3.2.1JackID-
3.2.2CableTest
3.2.3CableLength
TheJackIDtestidentifieswhatequipment,ifanyis,connectedtotheotherendof
thejackorcablebeingtested.Thetestfirstlooksforvoltagesbeingpresentontheconnectorpins.
Ifvoltagesarefoundintypicalphonelocations,testsforcurrentlevelsanddialtonearerun.From
thesetests,theLanScaper™willreportvoltageorphonetypefound.
Ifnovoltagesarepresent,testingforEthernetlinkpulsescommences.Iflinkpulsesarefound,the
advertisedcapability,thepairswithlinkpulsesandthepolarityoflinkpulsesaredisplayed.The
pairswithlinkpulsesareindicatedby
referencetothedevicethatwouldnormallypresentpulseson
thosepairstheHUB,switchorNICassumingstraightthroughcabling.Withacross-overcable
present,aNICwouldbelabeledasaHUB,etc.TheAUTOindicationisdisplayedifthedevice
connectediscapableofauto-MDI/MDI-X.Ifnopulsesarefound,butthepatternoftermination
ofthecableisthatofaninactiveEthernetdevice,itwillbedisplayedassuch.
Notfindinganyoftheabove,theLanScaper™invokesthecabletestdescribedinthenextsection,
displayingsingle-endedcabletest,fullcabletestor“NoI/OorCable”res
ults.
-Ifaremoteissensed,thetesterperformsafullcabletest.Uponcompletionof
thetest,thewiremapdisplay,IDandanyfaultsaredisplayed.Thetoplineofnumbersonthe
displayrepresentstheconnectorpinsonthemainunit.Thesecondlineofpinnumbersisthe
connectorpinnumbersoftheremote,normallybeingthesameasthetoplineforanormaldata
cable.Ifthereisamiswire,thenumbersonthesecondlinewillindicatethepinnumbersdetected.
Ifnoconnectionwasdetectedforsomeofthepins,thesecondlinewillbeblankinthosepin
locations.Ifashortisdetected,thesecond
linewillhaveaflashing'x'inthatpositionandthe
specificshortconditiondisplayedonthethirdline.Ifasplitpairisdetected,thosepinpositionson
thesecondlinewillbeflashingthepinnumbersdetectedfromtheremoteandthespecificsplit
conditiondisplayedonthethirdline.Iftherearemultipleerrorstodisplayonthethirdline,the
messagesaredisplayedinsequenceuntilallaredisplayed.TheIDiconwillhaveanumberdirectly
belowitindicatingtheremoteIDnumber.Ifnofaultsarefoundonthecable,thelengthofthecable
isdisplayed.
Ifthereisnoremote,theLanSc
aper™usesthelengthandcabletestcapabilitytomeasureacable
forshorts,opensandsplitpairs(single-endedtest).TESTandthepinnumbericonsforthepairs
beingtestedwillbeontoindicateatestinprogress.Theresultsaredisplayedasmessagesonthe
LCD.Becauseatestcantakeuptoabout5secondstocomplete,theSELbutton,which
immediatelystartsanewtest,shouldbepressedwheneveranewcableisconnected.Partialand
erroneousresultswillbedisplayeduntilacompletetestcyclehasbeenrunonacable.
-Thelengthmodemeasuresthelengthofacablebymeasuringitscapacitance
andusingthecapacitanceperunitlength(lengthconstant)tocalculatethelength.Thelengthis
displayedontheLCDalongwiththecurrentvalueofthelengthconstant.TheSELbuttonchanges
thepairbeingmeasuredina1-2,3-6,4-5,7-8andauto-selectsequence.Thepairnumberis
displayednexttothelengthexceptinauto-selectmode.Ifaselectedpairhasafault,thefault
replacesthelengthreadingontheLCD.Inauto-selectmode,thetesterautomaticallyselectsapair
withoutafault.Thelengthconstantischangedwiththeup/downarrows.TheCALiconison
whileadjustingt
heconstant.Ifnetworkterminationpatternsarefoundinthelengthmode,the
testerwilldisplay"TRingNetwork??","xbase-TNetwork?"or“Network?”(allfourlines
terminated).Ifaremoteissensed,theIDNumberisdisplayed.