Radio Terminals
− Xu, for example RAU2 Xu 23, indicates compatibility with a C-QPSK
MMU and a QAM MMU within ML TN together with an optional feature
(released in TN 4).
• F indicates frequency band.
4.3.4 Functional Blocks
This section describes the RAU internal and external functions based on the
block diagrams in Figure 62 on page 71and Figure 63 on page 72.
Transmit IF
Signal
Processing
DC/DC
Converter
Secondary
Voltages
Cable Interface
Branching Filter
RCC
Control and
Supervision
Processor
Alarm
and
Control
DC
MMU
Alignment Port
Antenna
6623
Transmit RF
Oscillator
Power
Amplifier
Transmit IF
Demodulator
Filter and
Amplifier
RF
Loop
Low Noise
Amplifier
Received
Signal
Strength
Indicator
Receive RF
Oscillator
Down-
converter 1
Receive IF
Oscillator
Down-
converter 2
Figure 62 Blo
ck diagram for RAU 1 and RAU2
71
4/1555-CSH 109 32/1-V1 Uen B 2007-09-14
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