User's Manual Part 1

FiberDistributedAntennaSystem(FiberDAS)
7
Master Frame Unit (MFU)
TheMasterFrameUnit(MFU)housesthePowerSupplies,BaseStationInterfaceUnits(BIU),InterconnectionUnits
(ICU),andFiber‐OpticInterface(FOI)cards.
Figure3 showsanMFUequippedwith3BIUs,6FOIsandonePower
Supply.
Figure 3 Master Frame Unit
Functional description
OneMFUsupport
sseveralmodules,orcombinationofmoduletypes.Themodulescanbeplacedanywhereinthe
frame.Thereare16singleslotcardpositionsineachMFU,howevermodulewidthsvary(seeeachmodule’s
specifications)sothenumberofmodulethatwillfitinanMFUdependsonthemoduletype.On
eMFUcanhouseup
to4powersupplies,8ICUs,8wideBIUs,16slimBIUs,16FOIs,orcombinationofmodules.See
Table2 .
EachMFUreq
uiresatleastonepowersupply,althoughthepowersupplydoesnotneedtobehousedwithinthe
MFU.QuiteoftenasystemhasmorethanonepowersupplyandtheyareusuallyplacedtogetherinoneMFUfor
easyaccess.EachMFUhastwopowerinputconnectors,oneprimaryandoner
edundant.Aredundantpowersupply
connectedtoanMFUensurescontinuedoperationifoneofthepowersuppliesshouldfail.
TheMFUcontainstwove
ntilationfanscirculatingambientairthroughtheunitshousedintheframe.Thesearehigh
qualityfanswithahighmeantimebetweenfailure(MTBF).
EachModuleintheMFUarea
ssignedanIPaddressesviaDHCPleases,modulesinherittheMACaddressfromthe
backplane,thisensuresthatanewmoduleinsertedintherackreceivesthesameIPaddressastheoneitis
replacing,withouttheneedofmanualconfiguration.
Table 2 MFU Specifications
Parameter Value
Powerconnector Mol
ex,10Pin
Ethernetconnector RJ4
5
Weight(withoutmodule
s) 5.5lbs(2.5kg)
Temperatureran
ge,Operational 0to45°C(32to113°F)
Width 19”(48.3cm)
Heigh
t 3U,5.25”(13.34cm)
Dep
th 11.8”(30cm
)
Maximumnumberofeachtypeof
modulessupported
PSU 4
BIU(DBI3xx,DBI3xxC
(
compact)) 8,16
FOI(DOI401,DO
I30x) 8,16
ICU 8