99810492; 790-6000 MHz Base Station Antennas - Romkatel

Kathrein’s Remote Electrical Tilt System
Ways of controlling the RET System:
Central Control Unit (CCU)
The major component for controlling the RCU is the
Central Control Unit (CCU), which is located at the
BTS. In order to cover all required applications, the
CCU can be accessed from the Operational
Maintenance Center (OMC) via the Ethernet input
and/or directly through a personal computer via the
RS 232 input.
The maximum number of RCUs controlled by a
single CCU and the amount of cable length usable,
depend on losses suffered along the cables (e.g. a
maximum of 9 RCUs with 100 m of cable).
Controlling several RCUs can be achieved through
the use of splitters or the daisy-chain functionality of
the RCUs.
Communication between the CCU and RCU
Three options are offered:
– Separate cables
– Using Smart Bias Tee´s in the feeder lines
– Via TMA
Portable Control Adapter (PCA)
RET
The PCA is a portable controller for Kathrein’s
Remote Electrical Tilt system (RET). It is a simple
device for running the remote control unit (RCU)
attached to Kathrein base station antennas, and for
adjusting the vertical electrical downtilt locally.
This product is designed for portable applications
and for use by installers or maintenance staff with
temporary access to the RCUs. The standard
Central Control Unit (CCU) is not required.
Notebook
PCA software
USB
Antenna Antenna Antenna
RCU
PCA
AISG
RCU
24 V DC
60 W
RCU
RCU
Power supply
RCU
RCU
90 – 264 V AC
47 – 63 Hz
The PCA consists of a small control box and
Windows-based software to be installed on a
laptop. The control box with dimensions of
160 x 95 x 40 (W x L x H) transforms the USB interface
into an AISG-conform interface (RS 485 + DC
voltage). Together with the supplied software, all
functions of the RCU can be controlled via a laptop
or PC.
Up to nine RCUs can be controlled using a single
PCA.
This can be achieved either through the use of a
splitter or via the daisy-chain functionality of the
RCUs.
Upgrading the unit to offer remote control via the
OMC is very easily possible, by just connecting the
standard CCU instead of the PCA.
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