Enterasys Networks Connecting Fiber-Optic Cables to 4H4284-49

Connecting to the Network
3-18 Installation
4. VerifythatalinkexistsbycheckingthattheportRX(Receive)LEDisON(flashing
amber,blinkinggreen,orsolidgreen).IftheRXLEDisOFFandtheTX(Transm it)
LEDisnotblinkingamber,performthefollowingstepsuntilitison:
a. Toviewthereceiveandtransmitactivityonagroupofsegments,pressthe
GROUPSELECTbuttontosteptothegroupofinterest(Groups1through4).
EachtimetheGROUPSELECTbuttonispressed,theGROUPLEDlightsupin
sequence,indicatingwhichGroupisselected.Thereceiveandtransmitactivity
forthatgroupofsegmentsisthenindicatedbytheRXandTXLEDsforeach
segment.
b. VerifythatthecablingbeingusedisCategory5UTPwithanimpedancebetween
85and111ohms.Iftheportistooperateat100 Mbps,category 5cablingmustbe
used.
c. Verifythatthedeviceattheotherendofthetwistedpairsegmentisonand
properlyconnectedtothesegment.
d. VerifythattheRJ21connectoronthetwistedpairsegmenthastheproperpinouts
andcheckthecableforcontinuity.
e. CheckthatthetwistedpairconnectionmeetsthespecificationsintheCabling
Guide.
Ifalinkisnotestablished,contactEnterasysNetworks.Referto“GettingHelp”on
pagexviiifordetails.
5. RepeatallthestepsaboveuntilallRJ21connectionsaremade.
Connecting Fiber-Optic Cables to 4H4284-49
Thissectionprovidestheprocedurestoconnectfiber‐opticcablesfromthe100BASE‐FX,
MT‐RJfrontpanelportsofthe4H4284‐49 tothenetworkorotherdevices.Eachfiber‐optic
linkconsistsoftwofiber‐opticstrandswithinthecable:Transm it(TX)andReceive(RX)
ThetransmitstrandfromaDFE‐Goldmoduleportconnectstothereceiveportofafiber‐
optic100BASE‐FXEthernetdeviceattheotherendofthesegment.Thereceivestrandof
theapplicableMT‐RJportontheDFE‐Goldmoduleconnectstothetransmitportofthe
fiber‐optic100BASE‐FXEthernetdevice.
Toconnectafiber‐opticcablesegmenttothemodule,refertoFigure 3‐11andproceedas
follows:
1. Removetheprotectivecovers(notshown)fromtheMT‐RJfrontpanelconnectorand
fromtheconnectorsoneachendofthecable.
Note: An odd number of crossovers (preferably one) must be maintained between devices
so that the transmit port is connected to the receive port of the other device and vice versa.