Block Diagram
User Manual for AZ430 WAN Satellite Modem
ALARM
Remote M&C
GUI
SNMP
Front Panel
Azimuth M&C board
contacts
RS232/485
10/100Base-T
10 MHz
Ref Osc
Amplitude/
slop Eq.
Synthesizer
Modulator card
Interleaving Bit mapping
PL Framing
& signalling
PL
Scrambling
Modulation
and shaping
BB
scrambling
BCH
encoding
LDPC
encoding
Input
interface
MPEG
Framing
CRC-8
BB signalling
Synthesizer
DC supply
22KHz
Demodulator card
PL
Descrambler
PL Deframing
LDPC
decoding
BCH decoding
BB
Descrambler
Tuner
ADC
Demodulator
Filter & demux BB De-framing
CRC-8
TS
regenerator
buffer
10 MHz Ext. in
10 MHz Ref. out
Mon.out
L-band monitoring output
Mod. Out
(L-band)
L-band
upconverter
Input Interface
(selecter)
Telco Interface Card
MPEG
Deframing
G703
IFL IN 1
IFL IN 2
Figure 13 - Block Diagram for the L-band Type AZ430 Modem
HSSI
version 1.0
20
SHAPING THE FUTURE OF SATELLITE COMMUNICATIONS