Dbs3900 Monitoring System - Huawei BBU3900 Hardware Description

BBU3900
Hardware Description
About This Chapter
The DBS3900 monitoring system enables monitoring of all boards and components in the
cabinet. If any board or component is faulty, an alarm is automatically reported. The UPEU and
UEIU in the BBU or the RRU collects monitoring signals from boards and components to
achieve environment monitoring of the DBS3900.
2.1 Customized Alarm Input
2.2 BBU Monitoring Port
2.3 Monitoring Principles of the Cabinets
The DBS3900 cabinet is monitored by various boards. The boards collect alarms from sensors
and fans, and then transmit the alarm signals to the MON port on the BBU through the RS485
serial bus. In this manner, the boards monitor the cabinet.
Issue 11 (2010-11-10)
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DBS3900 Monitoring System

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