User Manual

System Description NOTCHCELL Repeater
R-TRON Proprietary & Confidential Page 23
5.5 ARCU
Figure 22 Block diagram of ARCU
The ARCU board is the central board in the repeater, located in the repeater cabinet.
The ARCU board contains a microprocessor, main memory, flash memory for the ARCU software, NVRAM
memory for parameters and the event log , ports for local and remote communication, battery powered real-time
clock, etc.
The ARCU board is used to supervise and control operational parameters such as gain control, ALC handling, etc.
The ARCU takes care of alarms and the event log, password and logon, and many other procedures.
The real-time clock on the ARCU board is used for alarm and for the event log.
Connection
Port Connected to
J1 On the PSU board.
J2 On the PA-DL unit.
J3 On the PA-UL unit
J4 On the UDC-UL, UDC-DL unit
J5, J5-1 On the UDC-UL unit
J6, J6-1 On the UDC-DL unit
J7 On the door
J7-1 Not used
J9, J9-1 On the W/M (Wireless Modem)