Cable Connections (Lte Tdd) - Huawei DBS3900 Installation Manual

DBS3900 LampSite
Installation Guide
pRRU3901 can be configured with one RF daughter board, or two RF daughter boards, or two
RF daughter boards and one WiFi daughter board. Figure 7-36 shows the cable connection
when the pRRU3901 is configured with only one RF Daughter Board in the outside scenario.
Figure 7-36 pRRU3901 cable connection
(1) PoE surge protector 1

7.5.5 Cable Connections (LTE TDD)

This section describes the cable connections for a single pRRU3901 and multiple pRRU3901s
in LTE TDD mode.
Issue 08 (2016-05-30)
external antenna TX/RX RF port on the pRRU3901. The other end of the pRRU3901 RF
jumper is the type N male connector, which is connected to the antenna system. For the
standard of the pRRU3901 RF jumper, see (Optional) RF Jumper of the DBS3900
LampSite Hardware Description.
 When two Ethernet cables are used to transmit CPRI signals, connect one end of the cables to the
CPRI_E0 and CPRI_E1 ports on the pRRU panel and the other end to any two ports of CPRI_E0 to
CPRI_E7 on the RHUB panel. On the RHUB panel, CPRI_E0 and CPRI_E1, CPRI_E2 and
CPRI_E3, CPRI_E4 and CPRI_E5, and CPRI_E6 and CPRI_E7 are used in pairs. CPRI_E0 on the
pRRU panel connects to the even-numbered CPRI port (for example, CPRI_E0, CPRI_E2, CPRI_E4,
or CPRI_E6) on the RHUB panel, and CPRI_E1 on the pRRU panel connects to the odd-numbered
CPRI port (for example, CPRI_E1, CPRI_E3, CPRI_E5, or CPRI_E7). This document describes
signal transmission using one Ethernet cable as an example.
 The Extender can be used to lengthen the distance between the RHUB and the pRRU3901 connected
using the Ethernet cable. If the Extender is used, the Ethernet cable is divided into two parts, one
among the RHUB, PoE surge protector 2, PoE surge protector 3, Extender and the other among
Extender, PoE surge protector 4, PoE surge protector 1, pRRU3901.
 For details about installation of the PoE surge protector and cables, see 12 (Optional) Installing the
PoE Surge Protector and Cables.

For details about installation of the RF surge protector and cables, see 13 (Optional) Installing the
RF Surge Protector and Cables.
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(2) pRRU3901
7 Installing a pRRU3901
(3) RF surge protector
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