Huawei BBU3900 Installation Manual page 22

Installing the BBU in the PS4890 Cabinet
c
Installing the BBU Cables
Cable connections of the BBU
CPRI optical cable
Monitoring signal cable between the PMU
and the BBU
In addition to the BBU cables installed in the APM30, a monitoring signal cable between the PMU and the BBU needs to
be installed when the BBU is installed in the PS4890 cabinet. The monitoring signal cable between the APMI and the
BBU is not required. For details on how to install the monitoring signal cable between the PMU and the BBU, see page 22.
BBU power cable
BBU alarm cable
21
Connect the BBU power cable
to the DC output terminal
LOAD6 of the DCDU-03B.
E1/T1 cable