User's Manual

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control.
Figure 4.4 – MDBU Outer Look
VHF+UHF frequency band including the following:
In/out RF Port
No Unit naming Description
TX RX
1 VHF+UHF Dual Band 1 Port 1 Port
3) Main Central Processor Unit (MCPU)
MCPU can inquire and control state of modules that are installed in BIU.
This unit can inquire and control state of four ODUs in total. Through communication, it also can
inquire and control ROU that is connected with lower parts.
In addition, the unit has RS-232C port for serial communication so that it can inquire and control
state of devices through PC. On the front panel, it has communication LED indicator to check
communication state with ROU. It also has ALM LED indicator to show whether a device gets
faulty.
For access to upper network, it has a port to insert Ethernet port and GSM modem in it.