User's Manual

Open Information
DESCRIPTION 10 ( 20 )
EAB/RWB/ZG Christina Wilson 18/1551–HRB 105 102/1 Uen
EAB/RWB/Z (Dennis Radenholt) 2003-06-16 B
Prepared (also subject responsible if other) No
Approved Checked Date Rev Reference
E
Fan Unit
The Fan Unit contains the Internal Fans and the Climate System Control Unit.
The Fan Unit is accessible from the front of the cabinet. The speed of the
Internal Fans is temperature-controlled.
4.6 Internal Cables
This section gives a brief description of the internal RBS cables.
Gamma Cable
The gamma cables connect the BBIFB and RFIFB. The BBIFB and RFIFB can
connect two gamma cables, one for each antenna branch. It carries serial
traffic streams from the gamma interface.
Timing Cable
The timing cable is a connection between the BBIFB and RFIFB. This cable
connection distributes timing signals from the BB part of the subrack to the RF
part of the subrack, and reads RFIFB product information.
Inter-Subrack Timing Cable
The inter-subrack timing cable distributes timing signals from the TUB to the RF
part. The cable is connected between the BBIFB and the RFIFB.
Internal Jumper Cable
The internal jumper cables connect the AIU to the RF connectors at the
bottom of the RBS cabinet. As the AIU can handle two antenna branches, two
cables are connected to the AIU. These cables carry the transmit RF and
receive RF signals.
For Antenna Near Products, the AIU can feed power through both cable
connections. One of the antenna connectors also has the capability to carry the
auxiliary unit interface, which supervises and controls units.
MCPA Control Cable
The MCPA control cable is the auxiliary unit control connection for the MCPA.
The cable is connected between the RFIFB and MCPA.
Low-Power Multi-Carrier TX Cable
The low-power multi-carrier Transmitter (TX) cable carries the low power RF
signal after carrier combination and signal splitting (if applicable) from the
AIU to the MCPA.
High-Power TX Cable
The high-power Transmitter (TX) cable carries the RF signal from the MCPA
to the AIU after power amplification.
Transmission Cable
The transmission cable connects the ETB to the Connection Field at the bottom
of the RBS cabinet.