Huawei BBU3900 Installation Manual page 27

Installing the BBU in the RRU3004 Rack
j
Installing the BBU Cables
220 V input power
4815
Only two countersunk
screws are required.
Cable
CPRI optical cable
PGND cable for the RRU3004 rack
External PGND cable
Equipotential cable for the rack
Power cable for the BBU
4815 - BBU monitoring signal cable
E1/T1 cable
PGND cable for the 4815
Input power cable for the 4815
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
Ground bar of the stand
Ground terminal of the RRU3004 rack
PWR port of the BBU
MON1 port of the BBU
E1/T1 port of the BBU
Bolts for the mounting ears of the 4815
AC INPUT port of the 4815
26
The mounting ears need to be installed in an
inverse manner during the installation of the
4815.
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
External ground busbar
Ground terminal of the RRU3004 rack
LOAD1 port of the 4815
RS232/RS485 port of the 4815, close to the
232 side
GEHUB or HUBBTS
Ground terminal of the RRU3004 rack
Power supply equipment of the customer