Installation Guide

FinMInstallationGuideRev.0.9 Release4.5.25 1‐5
MajorComponents Introduction
TMU
TMU(transportationmobileunit)radiosoperateon‐board,andtransmitto/receivefrom
TBSsinstalledonwaysidepolesorwallstoprovidecommunicationconnectionsforon‐board
equipmentsuchasroutersandWiFidevices.
TwoTMUs(bestpractice)areinstalledonthetrain(oneateachend),areconnectedtothe
traininternalnetwork,andmaintaincontinuouscommunicationslinkwiththerelevantTBS.
TheTMUtoTBSconnectionestablishesanEthernetbroadbandnetworkbetweenthetrain
andthecorenetwork,whichcanbeusedforUplink/Downlinkbasedservices.
Figure1‐5:TMUradio
275mm
40mm
230mm
Antenna(RF)
connections
PoE