Ericsson RBS 2106 Hardware Reference Manual page 89

RBS 2206
TMA-CM – Tower Mounted Amplifier - Control Module
The Control Module is used to provide up to six ddTMAs with 15 V DC power
through the bias injector. It is also used to identify TMA faults and forward this
information to the alarm module in the RBS. The TMA-CM is mounted in an
OXU position.
Number of units per cabinet: 0 – 2
6 Interfaces
In this section all external and internal connections are listed, as well as the
test interface and the operator interface.
Figure 6 Block diagram showing internal power and signal paths
The connection field for external connectors is located at the top of the radio
cabinet inside the door. Internal connections, the test interface and operator
interface are located on some hardware units.
EN/LZT 720 0225 R3A
Cabinet ID
Cabinet LEDs
Option BFU
PSU
EPC-
FAN
bus
External alarms
ESB
OMT
DXU
GPS
EOM
Transmission lines
OXU
CDU
CDU
CDU
CXU
IOM-
bus d d d d
T T T T
R R R R
U U U U
Y-links
Radio Base Station
d d
T T
R
R
U
U
P007455C
15 (24)