Comtech EF Data SDM-9000 Installation And Operation Manual page 165

SDM-9000 Satellite Modem
Rev. 4
Table 6-3. Conversion to S/N and E
(dB) Code Rate 3/4
(S+N)/N S/N
4.0 1.8
4.5 2.6
5.0 3.3
5.5 4.1
6.0 4.7
6.5 5.4
7.0 6.0
7.5 6.6
8.0 7.3
8.5 7.8
9.0 8.4
9.5 9.0
10.0 9.5
10.5 10.1
11.0 10.6
11.5 11.2
12.0 11.7
12.5 12.2
13.0 12.8
13.5 13.3
14.0 13.8
14.5 14.3
15.0 14.9
15.5 15.4
16.0 15.9
16.5 16.4
17.0 16.9
17.5 17.4
18.0 17.9
18.5 18.4
19.0 18.9
19.5 19.5
20.0 20.0
/N Chart (16QAM)
b 0
Code Rate 7/8
E /N S/N
b 0
-3.0 1.8
-2.2 2.6
-1.4 3.3
-0.7 4.1
-0.0 4.7
0.6 5.4
1.3 6.0
1.9 6.6
2.5 7.3
3.1 7.8
3.6 8.4
4.2 9.0
4.8 9.5
5.3 10.1
5.9 10.6
6.4 11.2
6.9 11.7
7.5 12.2
8.0 12.8
8.5 13.3
9.1 13.8
9.6 14.3
10.1 14.9
10.6 15.4
11.1 15.9
11.6 16.4
12.1 16.9
12.7 17.4
13.2 17.9
13.7 18.4
14.2 18.9
14.7 19.5
15.2 20.0
Maintenance
E /N
b 0
-3.6
-2.8
-2.1
-1.4
-0.7
-0.0
0.6
1.2
1.8
2.4
3.0
3.5
4.1
4.7
5.2
5.7
6.3
6.8
7.3
7.9
8.4
8.9
9.4
9.9
10.4
11.0
11.5
12.0
12.5
13.0
13.5
14.0
14.5
6–7