Zte ZXMBW E9230, User Manual

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Chapter 2 Hardware Description
WRPM Module
In ZXMBW E9230, the WiMAX RRU Power Module ( WRPM ) is re-
sponsible for power supply conversion.
Function The WRPM module provides the following functions:
�
Power supply conversion
� Lightning proof
� EMI filtering
� Power supply management and alarm reporting
Working Principle Figure 16 show the working principle of the WRPM module.
F
IGURE
16 WRPM W
ORKING
P
RINCIPLE
(DC)
The WRPM module consists of EMI filtering unit, protection unit,
DC-DC conversion unit, and alarm monitoring unit. The functions
of the units are described as follows:
� The EMI filtering unit provides the filtering function.
�
The protection unit provides over-voltage or under-voltage
protection.
� The DC-DC conversion unit implements power supply conver-
sion.
� The alarm monitoring unit reports such alarms as under-volt-
age, over-voltage and over-current alarms.
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