User Manual

Other units
In addition to the channel/band selective boards, the repeater contains:
• DIA Distribution board, which is a board on which all other boards and
units are connected to.
On the DIA board, there is a shielded metal frame in which the CU and
ALI boards are located.
There is a DIA board in the cabinet, and another board in the cover, if
equipped.
• CU Control Unit board, located in the frame on the DIA board.
There is one CU board in the cabinet, which controls the entire
repeater.
• ALI Alarm Interface board, located in the frame on the DIA board.
There is one ALI board in the cabinet which handles alarm and alarm
communication.
• DC Directional Coupler, located in shielded boxes which are formed as
recesses in the cabinet.
Two DC units in the cabinet are used as antenna signal directional
coupler.
• LNA Low Noise Amplifier, located in shielded boxes which are formed
as recesses in the cabinet.
Two LNA units in the cabinet are used as downlink and uplink low
noise amplifiers, and additional two LNA are used in the cover, if
equipped.
• DPX Duplex filter, located on the cover plate over the channel/band
selective boards.
• CMB Combiner unit, located on the cover plate over the channel/band
selective boards in channel selective repeaters with more than two
channels, and in combined repeaters.
• RCU unit (optional), see Chapter 6, Optionals.
• PSU Power Supply Unit, located downmost in the cabinet, and in the
cover, if equipped.
If the repeater is equipped with an optional Repeater to Repeater Link
feature, the following board is also included in the repeater (not valid to
channel selective CDMA repeaters):
• RIA Repeater to Repeater Interface Adapter, located in the frame on
the DIA board.
For further information about the Repeater to Repeater Link feature,
refer to the VD202 91/EN R2R, Repeater to Repeater Link Kit,
Installation Guide.
ALLGON System AB AR Repeaters Functional Description
User’s Manual VD203 66/EN Rev. P1A 2000-09 5 - 3