Ericsson MINI-LINK E - Modem Board; RTU Block Diagram

MINI-LINKEandEMicro
4.3 B lock Diagram
Transmitter
Oscillator
Multiplier
Power
Amplifier
Transmitter ( MCM )
FREQUENCY
CONTROL TX
Multiplier
Down
Converter
Filter &
Amplifier
Down
Converter
Low
Noise
Amplifier
Output
Level
Control
FREQUENCY
CONTROL RX
OUTPUT
LEVEL SET
974 MHz
TX OFF
Receiver ( MCM )
Receiver
Oscillator
DC/DC Converter
Oscillator
IF
FREQUENCY
CONTROL IF
Alarm and
Control
IF Converter
834 MHz
140 MHz
Control &
Supervision
Processor
Processor
Interface
To control and
supervision
processor
Microwave Unit
Transmit
Modem Board
Traffic Interface,
Radio Frame
Processing
Signal
Baseband
Receive
Processing
Signal
Baseband
RSSI
Connection Unit
with lightning
protection
Receive IF
Signal,
140 MHz
Multiplexer and
Demultiplexer
Secondary
voltages
To Alignment Port
Command
& Control
Signal
DC
Branching
Filter
Branching
Filter
Antenna
Filter Unit
RF
Loop
3525
Figure 59 RTU block diagram
4.4 M o dem Board
Traffic
Interface
Radio Frame
Multiplexer
Radio Frame
Demultiplexer
Modulator
Demodulator
2 Mbit/s
2 Mbit/s
Modem Board
3526
Figure 60 Modem board
82
AE/LZT 110 2012 R8C 2002-03-04