Functions
The PMU 11A performs the following functions:
l
Manages the power system.
l
Reports the battery temperature.
l
Monitors power distribution and reports alarms.
Ports
shows the ports on the PMU 11A and
describes these ports.
Figure 5-6
Ports on the PMU 11A
Table 5-3
Ports on the PMU 11A
No.
Silkscreen
Connector
Description
1
GATE
2-pin connector
Connects to a door status
sensor
2
TEM_BAT
2-pin connector
Reserved for a battery
temperature sensor
3
COM_IN
RJ45 connector
Connects to the BBU or
upper-level device and
reports alarms to the
BBU.
4
COM_OUT
RJ45 connector
Connects to the BBU or
lower-level devices and
collects alarms from
lower-level devices.
5
COM_485
RJ45 connector
Reserved
Indicators
describes the indicators on the PMU 11A.
BTS3900C (Ver.C)
Hardware Description
5 BTS3900C Monitoring System
Issue 03 (2013-05-27)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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