Comtech EF Data CDM-710G Specifications Page 231

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CDM-710 Broadcast Satellite Modem Revision 11
Eb/No Measurement MN/CDM710.IOM
B–5
Table B-3. CDM-710 Co+No/No to C/N (Es/No) and Eb/No (dB) For DVB-S2 16-APSK and 32-APSK
(DVB-S2 uses C/N (Es/No), and Eb/No is shown for information)
Notes:
1. Eb/No = Es/No – 10 Log (Spectral Efficiency).
2. The Required C/N for QEF with FECFrame = 16,200 bits is typically 0.2 to 0.3 dB higher.
3. Shaded values are high error rate or unusable.
16APSK 32APSK
2.637201 2.966728 3.165623 3.300184 3.523143 3.567342 3.703295 3.951571 4.119540 4.397854 4.453027
2/3 3/4 4/5 5/6 8/9 9/10 3/4 4/5 5/6 8/9 9/10
(Co+No)/No C/N = Es/No Eb/No Eb/No Eb/No Eb/No Eb/No Eb/No Eb/No Eb/No Eb/No Eb/No Eb/No
9.0 8.4 4.2 3.7 3.4 3.2 2.9 2.9 2.7 2.4 2.3 2.0 1.9
9.5 9.0 4.8 4.3 4.0 3.8 3.5 3.5 3.3 3.0 2.8 2.6 2.5
10.0 9.5 5.3 4.8 4.5 4.4 4.1 4.0 3.9 3.6 3.4 3.1 3.1
10.5 10.1 5.9 5.4 5.1 4.9 4.6 4.6 4.4 4.1 3.9 3.7 3.6
11.0 10.6 6.4 5.9 5.6 5.5 5.2 5.1 5.0 4.7 4.5 4.2 4.2
11.5 11.2 7.0 6.5 6.2 6.0 5.7 5.7 5.5 5.2 5.0 4.7 4.7
12.0 11.7 7.5 7.0 6.7 6.5 6.2 6.2 6.0 5.7 5.6 5.3 5.2
12.5 12.2 8.0 7.5 7.2 7.1 6.8 6.7 6.6 6.3 6.1 5.8 5.8
13.0 12.8 8.6 8.1 7.8 7.6 7.3 7.3 7.1 6.8 6.6 6.3 6.3
13.5 13.3 9.1 8.6 8.3 8.1 7.8 7.8 7.6 7.3 7.2 6.9 6.8
14.0 13.8 9.6 9.1 8.8 8.6 8.4 8.3 8.1 7.9 7.7 7.4 7.3
14.5 14.3 10.1 9.6 9.3 9.2 8.9 8.8 8.7 8.4 8.2 7.9 7.9
15.0 14.9 10.6 10.1 9.9 9.7 9.4 9.3 9.2 8.9 8.7 8.4 8.4
15.5 15.4 11.2 10.7 10.4 10.2 9.9 9.9 9.7 9.4 9.2 8.9 8.9
16.0 15.9 11.7 11.2 10.9 10.7 10.4 10.4 10.2 9.9 9.7 9.5 9.4
16.5 16.4 12.2 11.7 11.4 11.2 10.9 10.9 10.7 10.4 10.3 10.0 9.9
17.0 16.9 12.7 12.2 11.9 11.7 11.4 11.4 11.2 10.9 10.8 10.5 10.4
17.5 17.4 13.2 12.7 12.4 12.2 12.0 11.9 11.7 11.5 11.3 11.0 10.9
18.0 17.9 13.7 13.2 12.9 12.7 12.5 12.4 12.2 12.0 11.8 11.5 11.4
18.5 18.4 14.2 13.7 13.4 13.3 13.0 12.9 12.8 12.5 12.3 12.0 12.0
19.0 18.9 14.7 14.2 13.9 13.8 13.5 13.4 13.3 13.0 12.8 12.5 12.5
19.5 19.5 15.2 14.7 14.4 14.3 14.0 13.9 13.8 13.5 13.3 13.0 13.0
20.0 20.0 15.7 15.2 15.0 14.8 14.5 14.4 14.3 14.0 13.8 13.5 13.5
20.5 20.5 16.2 15.7 15.5 15.3 15.0 14.9 14.8 14.5 14.3 14.0 14.0
21.0 21.0 16.8 16.2 16.0 15.8 15.5 15.4 15.3 15.0 14.8 14.5 14.5
21.5 21.5 17.3 16.7 16.5 16.3 16.0 15.9 15.8 15.5 15.3 15.0 15.0
22.0 22.0 17.8 17.2 17.0 16.8 16.5 16.4 16.3 16.0 15.8 15.5 15.5
22.5 22.5 18.3 17.8 17.5 17.3 17.0 17.0 16.8 16.5 16.3 16.0 16.0
23.0 23.0 18.8 18.3 18.0 17.8 17.5 17.5 17.3 17.0 16.8 16.5 16.5
23.5 23.5 19.3 18.8 18.5 18.3 18.0 18.0 17.8 17.5 17.3 17.0 17.0
24.0 24.0 19.8 19.3 19.0 18.8 18.5 18.5 18.3 18.0 17.8 17.6 17.5
24.5 24.5 20.3 19.8 19.5 19.3 19.0 19.0 18.8 18.5 18.3 18.1 18.0
25.0 25.0 20.8 20.3 20.0 19.8 19.5 19.5 19.3 19.0 18.8 18.6 18.5
25.5 25.5 21.3 20.8 20.5 20.3 20.0 20.0 19.8 19.5 19.3 19.1 19.0
26.0 26.0 21.8 21.3 21.0 20.8 20.5 20.5 20.3 20.0 19.8 19.6 19.5
Spectral Efficiency
Code Rate
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