Installation Guide

FinMInstallationGuide DQ0266070/A.01 1‐3
TransportationFiberinMotionOverview Introduction
D. TMUs(TransportationMobileUnits)areinstalledonboardrollingstock,andareequippedwithantennas(usually3,installedonthe
roof).OneTMUisinstalledinthefrontandanotherintherearmostcompartmentofthetrain.
E. TheTBSunitstransmitto/receivefromTMUsthatarelocatedwithinitsbeam.
F. TheTMUradiosarepoweredbyPoEdevicesorarepowereddirectlybyanon‐boardswitchthatcanprovidePoE‐plus(802.3.at)
connection.
G. TheTMUradiosareconnectedtoanon‐boardnetwork(recommendedspeed1Gbps),whichenablesconnectivitybetweenthetwo
TMUs,aswellasconnectiontootheron‐boarddevices.
Figure1‐2:FiberinMotionOverview‐InternalOn‐boardview
TMUantenna(oneshown)
On‐boardethernet
LAN
Router
TMU
PoEforTMU
TMU
PoE
forTMU
(D)
(D)
(F)
(F)
(G)
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