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SLM-3650 Satellite Modem
Options
Table A-23. Performance with Noise, Viterbi Decoder and Reed-Solomon (Optional)
A.3.4.5
Digital Data Rates
The digital data rate is selectable in 1 Hz steps. The modem automatically calculates
and sets the symbol rate. Data rates entered that exceed the data rate or symbol rate
specification are rejected at entry.
The symbol rate range is 4.8 kHz to 2.5 MHz.
Modulation
Type
BPSK 1/2
QSPK 1/2
QPSK 3/4
QPSK 7/8
BPSK 1/2
QSPK 1/2
QPSK 3/4
QPSK 7/8
BPSK 1/2
QSPK 1/2
QPSK 3/4
QPSK 7/8
BPSK 1/2
QSPK 1/2
QPSK 3/4
QPSK 7/8
QSPK 1/2
QSPK 1/2
QSPK 1/2
QPSK 3/4
QPSK 3/4
QPSK 3/4
QPSK 3/4
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E b /N 0 (dB) Specification
BER
1/2 Rate
3/4 Rate
10
4.1
-6
10
-7
4.2
10
4.4
-8
10
-10
5.0
Encoding Type
Viterbi
Viterbi
Viterbi
Viterbi
Sequential
Sequential
Sequential
Sequential
Viterbi & Reed-Solomon
Viterbi & Reed-Solomon
Viterbi & Reed-Solomon
Viterbi & Reed-Solomon
Sequential & Reed-Solomon
Sequential & Reed-Solomon
Sequential & Reed-Solomon
Sequential & Reed-Solomon
IBS or D&I or ASYNC
IBS or D&I & Reed-Solomon
ASYNC & Reed-Solomon
IDR, T1
IDR, T1 & Reed-Solomon
IDR, E1
IDR, E1 & Reed-Solomon
A–79
7/8 Rate
5.6
6.7
5.8
6.9
6.0
7.1
6.3
7.5
Data Rate Range
2.4 kbps
4.8 kbps
7.2 kbps
8.4 kbps
2.4 kbps
4.8 kbps
7.2 kbps
8.4 kbps
2.4 kbps
4.8 kbps
7.2 kbps
8.4 kbps
2.4 kbps
4.8 kbps
7.2 kbps
8.4 kbps
64 kbps
64 kbps
2.4 kbps
1640 kbps
1800 kbps
2144 kbps
2335 kbps
Revision 3
MN/SLM3650.IOM
1.25 Mbps
2.5 Mbps
3.75 Mbps
4.375 Mbps
1.25 Mbps
2.5 Mbps
3.75 Mbps
4.375 Mbps
1.138 Mbps
2.277 Mbps
3.416 Mbps
3.986 Mbps
1.138 Mbps
2.277 Mbps
3.416 Mbps
3.986 Mbps
2048 Mbps
2048 Mbps
2048 Mbps
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