Huawei DBS3900 Installation Manual page 86

LampSite
Installation Guide
Prerequisites
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Context
The Ethernet cable has the following functions:
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Using the CPRI_E1 port on the pRRU3901 has the same Ethernet cable connection to the
RHUB3908 as using the CPRI_E0 port. The following section describes the connection using
the CPRI_E0 port.
Procedure
Step 1 Make the Ethernet cables.
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4.
Step 2 Install an Ethernet cable between an RHUB3908 and a pRRU3901.
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3.
Issue 08 (2015-01-15)
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.
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.
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 RHUB3908 can be
extended by the Extender up to a total distance of 200 m.
Provides power supply for the pRRU3901 when the cable connects the CPRI_E0 port on
the pRRU3901 to the RHUB.
Transmits CPRI signals between an RHUB3908 and a pRRU3901.
Provides Wi-Fi services for the pRRU3901 when the cable connects the GE port on the
pRRU3901 with three transmission ports to the AC.
Assemble an RJ45 connector and an Ethernet cable by following instructions in Assembling
the Unshielded RJ45 Connector and the Ethernet Cable of Installation Reference.
NOTE
Follow pin assignment instructions described in section Ethernet Cable in LampSite Hardware
Description to assemble the unshielded RJ45 connector and the Ethernet cable. Otherwise, the
transmission signal quality deteriorates and CPRI links may be disconnected.
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.
Remove the dustproof cap of the CPRI_E0 port on the pRRU3901.
Connect the RJ45 connector at one end of the Ethernet cable to the CPRI_E0 port on the
pRRU3901 panel.
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.
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6 Installing a pRRU3901
Step 1.1 and Step 1.2.
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