SDM-9000 Satellite Modem
Options
Rev. 4
A–11
I
Q
DATA
CLOCK
SYNC
DATA
CLOCK
Q
SYNC
I
BASEBAND
PHYSICAL
INTERFACE
and
DE-JITTER
FIFO
SYNC
DECODER
(Correlator)
2047 AND
AIS
GENERATORS
SYNC 1
INVERSION
and
SCRAMBLER
REED-
SOLOMON
CODER
(Outer Coder)
DEPTH 12
INTERLEAVER
K = 7
CONVOLUT.
ENCODER
PUNCTURING
and
MAPPING
(Inner Coder)
NYQUIST
FILTERS
(35% SRC)
TO QPSK
MODULATOR
A) TRANSMIT PROCESS
FROM QPSK
DEMODULATOR
NYQUIST
FILTERS
(35% SRC)
MAPPING
and
DEPUNCTUR.
VITERBI
DECODER
(Inner Decoder)
SYNC
DECODER
(Correlator)
DEPTH 12
DEINTERLEAV.
REED-
SOLOMON
DECODER
(Outer Decoder)
DESCRAMBLE
and
SYNC 1
INVERSION
DOPPLER
BUFFER
BASEBAND
PHYSICAL
INTERFACE
2047 and
AIS DETECT
B) RECEIVE PROCESS
Figure A-6. Block Diagram of SDM-9000 Configured for DBS/DVB Operation
A.2.1 Requirements
This section covers the module types that are compatible with each option, and the
minimum software requirements for the modem PCBs. The following options list the
interface type and PCB assembly numbers.
The DBS option works in conjunction with the Viterbi decoder, and includes additional
framing, interleaving, and Codec processing to provide:
•
Concatenated FEC
•
Convolutional encoding/decoding
This option can be factory or user installed. Refer to the following table for modem
compatibility requirements.
Interface PCB
Type 2 or 3 (or greater)
AS/4477-22 PECL w/buffer
AS/4477-32 PECL w/ESC
AS/4477-21 ECL w/buffer
AS/4477-31 ECL w/ESC
Display/M&C PCB
AS/2305 Rev. C4 (or greater)
Modulator PCB
AS/3969
Demodulator PCB
AS/3970-5 or AS/3970-6
DVB Reed-Solomon PCB
AS/4524
Summary of Contents for SDM-9000
Page 2: ......
Page 5: ...8 Mbit s w IDR Figure 1 7 16QAM BER Performance Curves with Reed Solomon Filename T_ERRATA 3...
Page 8: ......
Page 27: ...SDM 9000 Satellite Modem Introduction Rev 4 1 5 Figure 1 3 SDM 9000 Block Diagram...
Page 42: ...Introduction SDM 9000 Satellite Modem 1 20 Rev 4 This page is intentionally left blank...
Page 64: ...Configuration SDM 9000 Satellite Modem 3 6 Rev 4 JP1 Figure 3 4 Interface PCB AS 3971...
Page 65: ...SDM 9000 Satellite Modem Configuration Rev 4 3 7 Figure 3 5 Interface PCB AS 4477...
Page 66: ...Configuration SDM 9000 Satellite Modem 3 8 Rev 4 JP1 JP6 JP7 Figure 3 6 Interface PCB AS 5618...
Page 70: ...Configuration SDM 9000 Satellite Modem 3 12 Rev 4 Figure 3 7 Nyquist Filter Installation...
Page 83: ...SDM 9000 Satellite Modem Operation Rev 4 4 9 This page is intentionally left blank...
Page 87: ...SDM 9000 Satellite Modem Operation Rev 4 4 13 This page is intentionally left blank...
Page 104: ...SDM 9000 Satellite Modem Operation Rev 4 4 31 This page is intentionally left blank...
Page 107: ...Operation SDM 9000 Satellite Modem 4 34 Rev 4 This page is intentionally left blank...
Page 124: ...SDM 9000 Satellite Modem Operation Rev 4 4 51 Figure 4 17 RF Loopback Figure 4 18 IF Loopback...
Page 150: ...Theory of Operation SDM 9000 Satellite Modem 5 22 Rev 4 Figure 5 6 Interface Block Diagram...
Page 158: ...Theory of Operation SDM 9000 Satellite Modem 5 30 Rev 4 This page is intentionally left blank...
Page 186: ...Maintenance SDM 9000 Satellite Modem 6 28 Rev 4 This page is intentionally left blank...
Page 218: ...Options SDM 9000 Satellite Modem A 32 Rev 4 This page is intentionally left blank...
Page 242: ...Remote Control Operation SDM 9000 Satellite Modem B 24 Rev 4 ref SE_ command...
Page 254: ...Glossary SDM 9000 Satellite Modem g 6 Rev 4 This page is intentionally left blank...
Page 256: ...2114 WEST 7TH STREET TEMPE ARIZONA 85281 USA 480 333 2200 PHONE 480 333 2161 FAX...