User's Manual

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2 MCDU
Main Com/Div Unit
Combine 4EA downlink signal and divide 4EA signal to ODU
Combine 4EA uplink signal and divide 4EA signal to MDBU
Support VHF/UHF interface port
3 MCPU
Main Central Processor Unit
Control and monitoring system status
Control and monitoring with RS232
Have an access to upper-level network through GSM or
Ethernet
4 MPSU
Main Power Supply Unit
Input power: DC -48V, Output power: 9V, 6V
5 M/B
Mother Board
Provide signal interface and power for each unit
Provide three ports for dry contact
6 Shelf 19 inch, 5U
4.1.4 Function by unit
4 Main Drive BTS Unit (MDBU)
MDBU delivers TX signals of BTS or BDA to related devices and then delivers RX signals of the
devices to BTS or BDA. This unit can monitor TX input level. Using input AGC function, it
automatically adjusts input ATT. It also has ATT to adjust RX gain. MDBU is varied per
frequency band including the following:
No Unit naming Description
In/out RF Port
TX RX
1 800PS Single Band 2 Port 2 Port
2 850C Single Band 2 Port 2 Port
3 1900P Single Band 4 Port 4 Port
4 AWS-1 Single Band 4 Port 4 Port
5 800PS+900I+PA Dual Band 4 Port 4 Port
6 850C+700PS Dual Band 4 Port 4 Port
7 850C+700LTEC Dual Band 4 Port 4 Port