Installing An Ethernet Cable - Huawei DBS3900 Installation Manual

DBS3900 LampSite
Installation Guide

8.4.5 Installing an Ethernet Cable

This section describes how to install an Ethernet cable.
Prerequisites
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Context
The Ethernet cable has the following functions:
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Procedure
Step 1 Make the Ethernet cables.
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Step 2 Install an Ethernet cable between an RHUB and a pRRU3902.
Step 3 Connect the RJ45 connector at one end of the Ethernet cable to the CPRI_E0 port on the
pRRU3902 panel.
Step 4 Optional: Connect the RJ45 connector at the other end of the Ethernet cable to the output
port of the Extender. Then, connect the RJ45 connector at one end of another Ethernet cable
to the input port of the Extender.
In this scene, the Ethernet cable is divided into two parts, one between the RHUB and the
Extender and the other between the Extender and the pRRU3902.
Issue 06 (2015-10-30)
The Ethernet cable must be of Category 5e (enhanced) or higher. In addition, its cross-
sectional area must be 24 AWG or larger and frame spread rating must be CM or higher.
The Ethernet cables can be straight-through cables.
With the internal PoE module providing power, the maximum length of an Ethernet
cable is 100 m. With the Extender, the distance of the pRRU3901 and RHUB can be
extended by the Extender up to a total distance of 200 m.
Ethernet cables are not delivered, and they must be prepared onsite. You need to use a
network cable tester to test the Ethernet cable connection.
Provides power supply for the pRRU3902 when the cable connects the CPRI_E0 port on
the pRRU3902 to the RHUB.
Transmits CPRI signals between an RHUB and a pRRU3902.
Assemble an RJ45 connector and an Ethernet cable by following instructions in
Assembling the Unshielded RJ45 Connector and the Ethernet Cable, Assembling the
Shielded RJ45 Connector and the Ethernet Cable.
NOTE
– Follow pin assignment instructions described in section Ethernet Cable in DBS3900 LampSite
Hardware Description to assemble the RJ45 connector and the Ethernet cable. Otherwise, the
transmission signal quality deteriorates and CPRI links may be disconnected.
– The pRRU3902 supports both unshielded and shielded Ethernet cables. It is good practice to
use unshielded Ethernet cables.
Check whether the made RJ45 connector is qualified by following instructions in
Checking the Appearance of Metal Contact Strips.
To complete the assembly of the other end, repeat
Check whether the touch points on the connectors at both ends are normally conducted
and well contacted and whether the connections are correct by following instructions in
Testing the Connection of Assembled Cables of Installation Reference.
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8 Installing a pRRU3902
Step 1.1 and Step 1.2.
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