Huawei RRU3269 - Page 15

RRU3269
Installation Guide
3 Information About the Installation
Issue Draft B (2018-05-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
7
Figure 3-3 Ports on the RRU panels
Table 3-1 describes ports and indicators on the RRU panels.
Table 3-1 Ports and indicators on the RRU panels
Item
Silkscreen
Remarks
(1) Bottom ports
ANT_TXA
TX port A (4.3-10 straight connector),
supporting RET signal transmission
ANT_TXB
TX port B (4.3-10 straight connector)
EXT_ALM
Alarm monitoring port used for monitoring
one RS485 signal and two dry contact
signals
RET
Communication port for the RET antenna,
supporting RET signal transmission
(2) Ports in the
cabling cavity
RTN(+)
Power supply socket, For details about RRU
power cable appearance and specifications,
see RRU Power Cable.
NEG(-)
CPRI0
Optical/electrical port 0, connected to the
BBU or an upper-level RRU