User Manual
Product information and planning
9500 MPR Rel. 3.1
3DB18809AAAA Issue 1132/980
TX Analog Chain
– DAC & low pass filtering
– Modulation to 311 MHz IF TX
In Rx direction, the MODEM 300 Module terminates the IF signal coming from the ODU300 extracting
the original CBR and then the original Ethernet packets to be given the Core-E which distributes them to
the proper Module.
RX Analog Chain
– 126 MHz IF RX demodulation to I & Q
– low pass filtering & ADC
Digital Demodulator
– Carrier & CK recovery
– Equalisation
– Error Correction
Digital Deframer
– RPS (hitless)
– Defragmentation
Figure 50. Modem unit
Transmitter connected to the antenna
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