Table 4-6 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
Table 4-7 describes the indicators on the PMU 11A.
Table 4-7 Indicators on the PMU 11A
Silkscre
en
Color Description Status Description
RUN Green Running status
indicator
Steady on The PMU 11A is performing
startup, self-check, loading and
activation.
Blinking (on
for 1s and off
for 1s)
The PMU 11A is functional and
communicating with the BBU
properly. (This status does not
necessarily mean that the PMU
11A has been configured.)
Blinking (on
for 0.125s
and off for
0.125s)
The PMU 11A is functional but
unable to communicate properly.
Steady off The PMU 11A is faulty or there is
no DC power supply.
ALM Red Alarm indicator Steady on An alarm is generated.
Steady off No alarms is generated.
BTS3900C (Ver.C)
Hardware Description 4 BTS3900C Power System
Issue 03 (2013-05-27) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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