Huawei DBS3900 Installation Manual page 162

DBS3900 LampSite
Installation Guide
For details about the cable connections in the different scenarios, see 8.4.3 Cable Connections.
The Ethernet cable connections between RHUB and pRRUs are the same. The following
section describes the connections between RHUB-Extender-pRRU3902 as an example.
In the outdoor scenario, PoE surge protector is needed to provide surge protection for the
Ethernet ports. For details about the installation of PoE surge protector, see 12 (Optional)
Installing the PoE Surge Protector and Cables.
Procedure
Step 1 Make the Ethernet cables.
1.
2.
3.
4.
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.
Step 5 Connect the RJ45 connector at the other end of the Ethernet cable to any port ranging from
CPRI_E0 to CPRI_E7 on the RHUB panel based on the engineering design, as shown in
Figure 8-47.
Issue 08 (2016-05-30)
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.
 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 or pRRU3911 or
pRRU3911+WIFI
Step 1.1 and Step 1.2.
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