Figure 2-14 Monitoring principles of the DBS3900 when the BBU is installed in the OMB
COM_IN / COM1
MON0 / MON1
Cable to be
connected on site
Cable connected
before delivery
Monitoring from
source to destination
OMB
BBU
HEUA
Monitoring Principles of the DBS3900 in the +24 V DC Power Supply Scenario
Figure 2-15 illustrates the monitoring principles of the DBS3900 when the BBU is installed in
the APM30H (Ver.B) in the +24 V DC power supply scenario.
l For details about the functions of monitoring ports on the CMUA, see CMUA.
l For details about the functions of monitoring ports on the power equipment (DC/DC), see
Power Subrack (DC/DC).
Figure 2-15 Monitoring principles of the DBS3900 when the BBU is installed in the APM30H
(Ver.B) in the +24 DC power supply scenario
ALM
PRESENT
COM_IN
APM30H(+24V,Ver.B)
EXT-ALM0 / EXT-ALM1
MON0 / MON1
Cable to be
connected on site
Cable connected
before delivery
Monitoring from
source to destination
BBU
CMUA
Power System
(DC/DC)
Figure 2-16 illustrates the monitoring principles of the DBS3900 in the indoor solution of BBU
+RRU+ICR and also in the +24 V DC power supply scenario. In this solution, the BBU is
installed in the IMB03, and the RRU is installed on the IFS06.
l For details about the functions of monitoring ports on the power equipment (DC/DC), see
Power Subrack (DC/DC).
Figure 2-16 Monitoring principles of the DBS3900 in the BBU+RRU+ICR (+24 V DC) scenario
ALM
PRESENT
IMB03
IMB03
EXT-ALM0 / EXT-ALM1
BBU
Power System
(DC/DC)
Cable to be
connected on site
Cable connected
before delivery
Monitoring from
source to destination
For details about the monitoring of the EMUA, see 2.1 Customized Alarm Input.
For details about the connections of all monitoring signal cables in the cabinet, see Monitoring
Signal Cable Connections.
2 DBS3900 Monitoring System
BBU3900
Hardware Description
2-10 Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Issue 11 (2010-11-10)
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