RRU5303
Installation Guide
3 Information About the Installation
Issue Draft B (2018-05-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
10
Indicator
Color
Status
Meaning
Blinking red (on
for 1s and off for
1s)
The CPRI link is out of lock because of
faults on the mutual lock of dual-mode
clock sources or mismatched data rates on
CPRI ports.
Steady off
The optical module cannot be detected or is
powered off.
VSWR indicators on RRUs providing one or more than two TX channels have two types of status:
Steady off: No VSWR alarm is generated.
Steady on: VSWR alarms are generated on one or more ports.
3.4 Installation Scenarios
An RRU can be installed on a pole, U-steel, angle steel, wall, or IFS06. Installation scenarios
must meet heat-dissipation and waterproofing requirements of the RRU.
Requirements for the Installation Scenarios
RRU is a professional communications equipment and cannot be installed in areas which are
accessible to people. The installation scenarios involve the related security features. For
details about specific requirements and precautions, see
Safety Information
.
Application scenarios:
To ensure proper heat dissipation of the RRU, the following requirements must be met:
The RRU cannot be installed in an enclosed cabinet without a cooling system.
The RRU cannot be installed in an enclosed camouflage box.
The RRU cannot be installed in an enclosed equipment room without a cooling system.
When multiple RRUs are installed in centralized mode, the minimum clearance
requirements must be met. For details about the minimum clearance requirements, see
3.5.2 Clearance for Three or More RRUs and 3.5.3 Installation Spacing Between RRUs.
If the RRU is inappropriately installed, heat dissipation of the RRU deteriorates and the RRU
may not work properly, as shown in Figure 3-4.
