User's Manual

The fiber optic cable interface connectors couple the fiber optic cables from the 9927
Distributed BTS outdoor cabinet with the fiber optic cables in the Hybriflex cable
The DC Distribution/Fiber Management Box must be located at the bottom of the tower,
within 20 feet of the 9927 Distributed BTS outdoor cabinet.
The requirements for the DC Distribution/Fiber Management Box are as follows:
• Outdoor rated
• UL listed
• Contains six round holes for Hybriflex and 1-1/2 inch liquid-tight flexible metallic
conduit from the 9228 Distributed BTS outdoor cabinet.
• Contains 48 fiber optic (LC connector) interface connectors (connect fiber optic cable
from Hybriflex cable to fiber optic cable from 9927 Distributed BTS)
• Two DC surge protectors with the option to go up to four.
• Contains 12 25 Amp, DC circuit breakers (can go up to 24)
• DC terminal block
• Must be Installed within 6.1 m (20 feet) of the 9927 Distributed BTS outdoor cabinet.
The block diagram below shows two 1–1/2 liquid-tight flexible metallic conduits and one
Hybriflex cable entering the DC Distribution/Fiber Management Box.
Optical links between 9927 Distributed BTS cabinet and RRHs
The optical links between the baseband cabinet and DC Distribution/Fiber Management
Box and DC Distribution/Fiber Management Box and RRHs are via multi-mode duplex
fibers: two fibers -- one for Transmit (Tx) and one for Receive (Rx). When connecting the
DC DISTRIBUTION/
FIBER
MANAGEMENT
BOX FOR FIBER
OPTIC CABLE
AND -48 VDC
9927 DISTRIBUTED
BASE STATION
OUTDOOR CABINET
HYBRIFLEX CABLE
BY OTHERS
ALCATEL-LUCENT
1-1/2 INCH LIQUID-TIGHT
FLEXIBLE METALLIC CONDUIT
WITH FIBER OPTIC AND -48 VDC
POWER CABLES
Hybriflex cable specifications Requirements for Hybriflex cable
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9927 Dist BTS Outdoor
401-703-516
Issue 1 March 2012
Alcatel-Lucent – Proprietary
Use pursuant to applicable agreements
15-7