Data rates, 3 data rates – Comtech EF Data SDM-2020 User Manual
Page 61
SDM-2020 Satellite Demodulator
Revision 4
Specification
MN/SDM2020D.IOM
5–9
5.3 Data
Rates
Table 5-4. Unframed (187) Mode
Code Rate
Minimum
Data Rate
(bps)
Maximum
Data Rate
(bps)
Minimum
Symbol Rate
(sym/s)
Maximum
Symbol Rate
(sym/s)
Remarks
QPSK 1/2
1,375,000
34,375,000
1,500,000
37,500,000
QPSK 2/3
1,833,333
45,000,000
1,500,000
36,818,181
QPSK 3/4
2,062,500
45,000,000
1,500,000
32,727,272
QPSK 5/6
2,291,666
45,000,000
1,500,000
29,454,545
QPSK 7/8
2,406,250
45,000,000
1,500,000
28,051,948
8-PSK 2/3
2,750,000
68,750,000
1,500,000
37,500,000
8-PSK 5/6
3,437,500 85,937,500 1,500,000 37,500,000
8-PSK 8/9
3,666,666 91,666,666 1,500,000 37,500,000
16-QAM 3/4
4,125,000
91,666,666 1,500,000 33,333,333
16-QAM 7/8
4,812,500
91,666,666
1,500,000
28,571,428
Table 5-5. 188 Mode
Code Rate
Minimum
Data Rate
(bps)
Maximum
Data Rate
(bps)
Minimum
Symbol Rate
(sym/s)
Maximum
Symbol Rate
(sym/s)
Remarks
QPSK 1/2
1,382,353
34,558,823
1,500,000
37,500,000
QPSK 2/3
1,843,137
45,000,000
1,500,000
36,622,340
QPSK 3/4
2,073,529
45,000,000
1,500,000
32,553,191
QPSK 5/6
2,303,921
45,000,000
1,500,000
29,297,872
QPSK 7/8
2,419,117
45,000,000
1,500,000
27,902,735
8-PSK 2/3
2,764,705
69,117,647
1,500,000
37,500,000
8-PSK 5/6
3,455,882 86,397,059 1,500,000 37,500,000
8-PSK 8/9
3,686,274 92,156,862 1,500,000 37,500,000
16-QAM 3/4
4,147,058
92,156,862 1,500,000 33,333,333
16-QAM 7/8
4,838,235
92,156,862 1,500,000 28,571,428
Table 5-6. 204 Mode
Code Rate
Minimum
Data Rate
(bps)
Maximum
Data Rate
(bps)
Minimum
Symbol Rate
(sym/s)
Maximum
Symbol Rate
(sym/s)
Remarks
QPSK 1/2
1,500,000
37,500,000
1,500,000
37,500,000
QPSK 2/3
2,000,000
45,000,000
1,500,000
33,750,000
QPSK 3/4
2,250,000
45,000,000
1,500,000
30,000,000
QPSK 5/6
2,500,000
45,000,000
1,500,000
27,000,000
QPSK 7/8
2,625,000
45,000,000
1,500,000
25,714,285
8-PSK 2/3
3,000,000
75,000,000
1,500,000
37,500,000
8-PSK 5/6
3,750,000
93,750,000
1,500,000
37,500,000
8-PSK 8/9
4,000,000
100,000,000
1,500,000
37,500,000
16-QAM 3/4
4,500,000
100,000,000
1,500,000
33,333,333
16-QAM 7/8
5,250,000
100,000,000
1,500,000
28,571,428