Comtech EF Data CDM-600/600L User Manual
Page 32
CDM-600/600L Open Network Satellite Modem
Revision 3
Introduction
MN/CDM600L.IOM
1–4
Figure 1-2. CDM-600/600L Open Network Satellite Modem Block Diagrams
LVDS
INTERFACE
TX FRAMING
(IBS, IDR, D&I
OR EDMAC)
TX REED-
SOLOMON
WITH
SCRAMB-
LER
SEQ
ENCODER
TX G703 T1/E1
DEFRAMER AND
INTERFACE
RS-422, V.35 OR
RS-232
INTERFACE
G703 T2/E2
INTERFACE
TX LINE
DECODING
RX G703 T1/E1
DEFRAMER AND
INTERFACE
IBS OR
EDMAC
SCRAM-
BLER
MUX
DEMUX
INT CLK
DDS
ENC CLK
DDS
PL/9076
BASEBAND
FRAMING
CARD
AS/0424
MODEM
CARD
I & Q FILTERS
TX IF
RX IF
RX REED-
SOLOMON
WITH DE-
SCRAMB-
LER
OVERHEAD
INTERFACES
TX AUDIO INTERFACE
IBS OR EDMAC
DESCRAMBLER
RX DE-FRAMING
(IBS, IDR, D&I OR
EDMAC)
RX AUDIO INTERFACE
BUFFER
INS CLK
DDS
RX LINE
ENCODING
INSERT
VITERBI
& TCM
CODEC
TURBO CODEC
W/ SCRAMBLER
& DESCRAMBLER
(OPTIONAL CARD)
SEQ
DEC-
ODER
VIT/SEQ/OM73
SCRAMBLERS
VIT/SEQ/OM73
DESCRAMBLERS
TXFIR
FIR/PD & I/Q
RECOVERY
SYM & BIT
TIMING
RECOVERY
DLF/NCO
MICROPROCESSOR
& PROCESSOR FPGA
BIT/SYM
DACS
CARRIER
DACS
INS CLK
DDS
BUFFER CLK
DDS
LVDS
INTERFACE
(U62 & U64)
TX FRAMING
(IBS, IDR, D&I
OR EDMAC)
TX REED-
SOLOMON
WITH
SCRAMB-
LER
(U12)
SEQ
ENCODER
TX G703 T1/E1
DEFRAMER AND
INTERFACE
(U46)
RS-422, V.35 OR
RS-232
INTERFACE
(U63 & U67)
G703 T2/E2
INTERFACE
(U74)
TX LINE
DECODING
RX G703 T1/E1
DEFRAMER AND
INTERFACE
(U51)
IBS OR
EDMAC
SCRAM-
BLER
MUX (U22)
DEMUX (U19)
INT CLK
DDS (U33)
ENC CLK
DDS (U24)
AS/0423
BASEBAND
FRAMING
CARD
AS/0424
MODEM
CARD
I & Q FILTERS
TX IF
RX IF
RX REED-
SOLOMON
WITH DE-
SCRAMB-
LER
(U20)
OVERHEAD
INTERFACES
(U55, 57, 59, 68, & 75)
TX AUDIO INTERFACE
(U43 & U50)
IBS OR EDMAC
DESCRAMBLER
RX DE-FRAMING
(IBS, IDR, D&I OR
EDMAC)
RX AUDIO INTERFACE
(U60 & U61)
BUFFER
INS CLK
DDS (U42)
RX LINE
ENCODING
INSERT
VITERBI
& TCM
CODEC
(U48)
TURBO CODEC
W/ SCRAMBLER
& DESCRAMBLER
(OPTIONAL CARD)
SEQ
DEC-
ODER
VIT/SEQ/OM73
SCRAMBLERS
VIT/SEQ/OM73
DESCRAMBLERS
TXFIR (U61)
FIR/PD & I/Q
RECOVERY (U45)
SYM & BIT
TIMING
RECOVERY
DLF/NCO (U47)
MICROPROCESSOR (U44)
& PROCESSOR FPGA (U49)
BIT/SYM
DACS (U49)
CARRIER
DACS
(U52)
INS CLK
DDS (U42)
BUFFER CLK
DDS (U41)
LDPC CARD
CDM-600L Block Diagram
CDM-600 Block Diagram
AS/9662
MODEM
CARD