Figure 2-21 Interconnect Jumper; Table 2-18 Rf Jumper Connections Of The Rru - Huawei RRU User Manual

RRU
User Guide
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Interconnect Jumper of the RRU/SRXU
The interconnect jumper transmits RF signals between two RRUs or two SRXUs.
Appearance
The interconnect jumper is 2 m long and it has a 2W2 connector at each end, as shown in
2-21.

Figure 2-21 Interconnect jumper

Installation Position
The 2W2 connectors at the two ends of the interconnect jumper are linked to the ports labeled
RX_IN/OUT on two RRUs or two SRXUs respectively.
RF Jumper Connections of the RRU
One end of the RF jumper is connected to the RF ports on the RRU and the other end to the
feeder. Which RF port to use depends on the networking modes.
Table 2-18

Table 2-18 RF jumper connections of the RRU

Typical
Networking
Mode
1 x 1 in no TX
diversity mode
1 x 2 in no TX
diversity mode
2 x 1 in no TX
diversity mode
Issue 01 (2008-04-18)
When the distance between the antenna and the RRU/SRXU is shorter than 14 m, the RRU/
SRXU is directly connected to the antenna through the antenna jumper.
When the distance between the antenna and the RRU/SRXU is longer than 14 m, the antenna
jumper should be shorter than 2 m. If you prepare the jumper by yourself, it is recommended
that the feeder jumper be 2 m long at most. Ensure that the antenna jumper is connected to
the feeder before being connected to the RRU/SRXU and the antenna.
describes the connections of the RF jumpers in different RRU networking modes.
Antenna Type and
Quantity of RRUs
One RRU
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One dual polarization
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antenna
Two RRUs
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Two dual polarization
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antennas
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2 RRU and SRXU Hardware
Cable Connection
Two antenna jumpers
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The DIN connectors of the two feeder
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jumpers link to the ANT_TX/RXA and
ANT_RXB ports at the bottom of the
RRU.
Four antenna jumpers
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The DIN connectors of the four
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antenna jumpers are linked to the
Figure
2-25