Connecting to the Network
Matrix DFE-Gold Series Modules Hardware Installation Guide 3-11
Connecting UTP Cables to 4H4282-49 or 4H4202-72
ThefixedRJ45frontpanelconnectionsofthe4H428249and4H420272are10/100Mbps
ports.Theportshaveinternalcrossovers,andalsosupportautomaticpolaritysensing
whenconfiguredforautomaticnegotiation.
Ifautomaticnegotiationisnotactivatedonaport,useastraightthroughcablewhen
connectingaworkstationtotheport.Whenconnectinganetworkingdevicetotheport,
suchasabridge,repeater,orrouter,useacrossovercable.
Ifaportissetforautonegotiation,automaticpolaritysensingisalsoactivated.
Automaticpolaritysensingeliminatestheneedforacrossovercable,regardlessifthe
connectionistoanothernetworkdeviceoraworkstation.
Inthisprocedure,the 4H428249isusedastheexampletoconnectatwistedpairsegment
withRJ45connectorstotheDFEGoldmodule.RefertoFigure 34andproceedasfollows:
1. EnsurethatthedeviceconnectedtotheotherendofthesegmentispoweredON.
2. ConnectthetwistedpairsegmenttothemodulebyinsertingtheRJ45connectoron
thetwistedpairsegmentintotheappropriateRJ45portconnector.
Note: All RJ45 front panel ports on the 4H4282-49 and 4H4202-72support Category 5
Unshielded Twisted Pair (UTP) cabling with an impedance between 85 and 111 ohms.
Category 3 cable may be used if the connection is going to be used only for 10 Mbps.