Huawei BTS3900A Installation Manual page 125

BTS3900A(Ver.B)
Installation Guide
Two BBUs are configured in a triple-mode base station. The new BBU is installed in the extension APM30H
cabinet, and it does not have monitoring functions. For details about monitoring principles, see Monitoring
Principles for the Cabinets.
Procedure
Step 1 Install the monitoring signal cable between the cascaded CMUAs between the RFC and the
extension RFC. Connect one end of the cable to the COM_OUT port on the CMUA in the fan
box of the RFC and the other end to the COM_IN port on the CMUA in the fan box of the
extension RFC, as shown in
Figure 12-31 Installing the monitoring signal cable in the scenario of 2 RFCs+2 APM30Hs (1)
Step 2 Install the monitoring signal cable between the CMUA and the BBU. Connect one end of the
cable to the MON0 port on the UEIU in the BBU in the APM30H and the other end to the
COM_IN port on the CMUA in the fan box of the extension APM30H, as shown in
12-32.
Issue 01 (2011-10-25)
NOTE
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Figure 12-31.
12 Installing the Cables
Figure
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