Customized alarms are transmitted to the EMUA that connects to the PMU. Then, the PMU
reports the alarms to the CMUA, which transfers the alarms to the BBU through the MON port.
For details about cable connections, see
.
Figure 2-2
Customized alarms collected by the EMUA (1)
SENSOR
If the CPRI port on the RRU is not used to report alarms to the BBU, the serial port on the RRU
is used to report alarms to the CMUA that connects to the PMU. Then, the PMU transfers the
alarms to the EMUA. For details about cable connections, see
Figure 2-3
Customized alarms collected by the EMUA (2)
COM_IN
ALM
COM_IN
RS485
COM_OUT
COM_OUT
PMU
RRU
CMUA
EMUA
SENSOR
For details about the position of the input port on the EMUA and cable connection between the
EMUA and the sensor, see EMUA User Guide.
2.2 BBU Monitoring Port
The BBU houses the UPEU and UEIU for monitoring. Each board has two Boolean input ports
and two RS485 input ports, and each Boolean input port receives four Boolean inputs.
shows the slot assignment for the UPEU and UEIU.
2 DBS3900 Monitoring System
BBU3900
Hardware Description
2-4
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Issue 11 (2010-11-10)
Summary of Contents for BBU3900
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