Huawei BBU3900 Installation Manual page 26

Installing the BBU in the RRU3004 Rack
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Installing the BBU Cables
–48 V input power
DCDU
Cable
CPRI optical cable
Ground cable for the subrack
Power cable for the BBU
E1/T1 cable
Power cable for the DCDU
External PGND cable
Equipotential cable for the
subrack
Ground cable for the DCDU
One End Is Connected to...
The end with the optical cable labels 2A and 2B is
connected to CPRI ports 0 to 5 of the GTMU of the
BBU.
Ground terminal of the RRU3004 rack
PWR port of the BBU
E1/T1 port of the BBU
RTN (+) and NEG (-) terminals at the DC input end of
the DCDU
Ground bar of the stand
Ground terminal of the RRU3004 rack
Ground terminal of the RRU3004 rack
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The Other End Is Connected to...
The end with the optical cable labels 1A and
1B is connected to the CPRI_W port of the
cabling cavity of the RRU.
Ground bar of the stand
LOAD6 port of the DCDU
GEHUB or HUBBTS
External power supply system
External ground busbar
Ground terminal of the RRU3004 rack
Ground terminal of the DCDU