User's Manual

CU Control Unit Board
The CU board is the central board in the repeater, located in the repeater
cabinet. The CU board contains a microprocessor, main memory, flash
memory for the CU software, EEPROM memory for parameters, memory
for the event log and statistics, a REFO reference oscillator, ports for local
and remote communication, battery powered real-time clock, etc.
The CU board is used to supervise and control operational parameters
such as gain control, channel handling, etc. The CU takes care of alarms
and the event log, password and logon, and many other procedures.
The CU is also a control interface when using an OMT32/PC or an
OMS/PC locally or remotely via modem.
The CU software can be downloaded from an OMT32/PC or OMS/PC
either locally or remotely via modem.
The real-time clock on the CU board is used for alarm and for the event
log.
There are currently two CU board variants: K103/1 and K103/2.
CU board and CU software part #s
K103/1 CU board (old) CU board K103/1 can be run with the SA102 01/2 CU software. This
board can store one version of CU software. The repeater will always
boot on this software version.
K103/2 CU board (current) CU board K103/2 can be run with either the old SA102 01/2 CU software
or the current SA102 02/1 or SA102 02/2 CU software. This board can
store two versions of CU software, located in segment 1 and segment 2 of
the flash memory as Application 1 and Application 2. The repeater will
boot on that software which is set as Primary (description of Primary
application is found in the CU Revision Manager section in Chapter 10).
Compatibility for CU boards and CU software is detailed in the next
section.
Connection
The CU board is connected to the DIA board via the P2 port.
Caution
A lithium battery is permanently mounted on the CU board. Due to the
risk of explosion, this battery must not be removed from the board. In
case of battery malfunction, replace the CU board. The old CU board can
be sent to Allgon for repair.
ALLGON System AB AR Repeaters & OMT32 Hardware – Functional Description
User’s Manual VD202 90/EN Rev. 1A 1999-07 5 - 24