5.1 Powering On the pRRU
After the pRRU is powered on, check its running status by observing the indicator status.
Prerequisites
The pRRU and the cables are correctly installed.
Context
NOTICE
The pRRU must be powered on within 7 days after it is unpacked, and the period of its power-
off state cannot exceed 7 days during maintenance.
Procedure
Step 1
Power on the pRRU.
The pRRU can be powered in either of the following modes, which cannot be used at the same
time. It is recommended that you use power over Ethernet (PoE) power supply.
l
The RHUB adopts the PoE power supply to provide power for the pRRU over the CPRI_E0
port.
l
The pRRU can also be powered by the AC/DC adapter connecting to the local AC power
module.
NOTICE
If PoE is used and AC/DC adapter is connected to the AC power module, the pRRU automatically
uses AC/DC adapter to obtain power supply. Note that the pRRU will be powered off and then
powered on again if you pull the plug of the AC/DC adapter power cable to use the PoE for
power supply.
Step 2
Optional:
Check the power supply status for the pRRU. This operation is required when AC/
DC power adapter is used.
If...
Then...
The input voltage of the pRRU AC/DC
adapter ranges from 100 V AC to 240 V AC
Go to
. Otherwise, replace it. When the
input voltage is within the permissible range,
go to
Step 3
Wait 3 to 5 minutes. Then Check the status of the RUN indicator.
LampSite
Site Maintenance Guide
5 Powering On and Powering Off the pRRU
Issue 02 (2014-05-27)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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