LED
Color
State
Meaning
On for 1s (red) and off
for 1s
The CPRI link is out of lock.
Off
The SFP module is not in position or the
optical module is powered off.
CPRI1
Red/Green
Steady green
The CPRI link is functional.
Steady red
The optical module fails to receive
signals.
On for 1s (red) and off
for 1s
The CPRI link is out of lock.
Off
The SFP module is not in position or the
optical module is powered off.
Ports
describes the ports and sockets on the DRFU.
Table 4-49
Ports and sockets on the DRFU
Port
Connector
Label
Description
Port for
transceiving
RF signals
DIN female
ANT1
Connecting to the antenna system
ANT2
CPRI port
SFP female
CPRI0
Connecting to the lower-level RFU
during the cascading
CPRI1
Connecting to the BBU, or the upper-
level RFU in cascading mode
Interconnecti
on port for
receiving RF
signals
QMA female
RX1/IN
Diversity RX port in antenna channel 1
RX1/OUT
Diversity TX port in antenna channel 1
RX2/IN
Diversity RX port in antenna channel 2
RX2/OUT
Diversity TX port in antenna channel 2
Power supply
socket
3V3
PWR
Used to lead in power
QMA
QMA female
FIXED
Unique port of the DRFU of 1800 MHz,
which is used to switch between the
combined transmission and divided
transmission modes
UNCOMB
COMB
4 BTS3900 Components
BTS3900
Hardware Description
4-48
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Issue 04 (2011-02-15)