User's Manual

Table Of Contents
BMU AR Standard Repeater
A-4 044-05250 Rev A
BMU
Figure A-4 BMU Block Diagram
Figure A-4 illustrates a block diagram of a BMU. The BMU has to be located adjacent to the
BTS as the base station antenna signal passes through the BMU. Features controlled by the
CU, ALI and RCI PCBAs in standard repeaters are controlled here by the FON which has the
required functionality and the FLI function built-in.
The base station antenna signal is fed through a DC inside the BMU. The signal from the MS
-20dB port enters the FOU by passing a DPX. The downlink path (HI) is then fed to the FON
which converts the RF signal to an optic signal. The optical signal from the TX output is sent
via fiber optic cables to a FOR.
DC
BS
TEST –30 dB
MS –20 dB
ANT DPX
FON
TX
RX
DPX
ANT
HI
LO
FOU
FOR
WRH
BTS
P130
RCU
PSU
P111 P112P130 P109P106
P101
P102
FLI
WLI
WLI