Comtech EF Data CDM-710 Installation And Operation Manual page 243
Broadcast satellite modem
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- Installation and operation manual (242 pages) ,
- Installation and operation manual (336 pages)
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CDM-710 Broadcast Satellite Modem
Eb/No Measurement
CDM-710 Co+No/No to C/N (Es/No) and Eb/No (dB) For DVB-S And DVB-DSNG
Spectral Efficiency
(Co+No)/No
C/N = Es/No
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
20.5
20.5
21.0
21.0
21.5
21.5
22.0
22.0
Note:
1. Includes 0.36 dB for bandwidth expansion due to Reed Solomon coding.
2. Shaded values are high error rate or unusable.
QPSK
0.921569
1.228758
1.382353
1/2
2/3
3/4
Eb/No
Eb/No
Eb/No
2.1
0.9
0.4
3.0
1.7
1.2
3.7
2.5
1.9
4.4
3.2
2.7
5.1
3.8
3.3
5.8
4.5
4.0
6.4
5.1
4.6
7.0
5.8
5.2
7.6
6.4
5.8
8.2
6.9
6.4
8.8
7.5
7.0
9.3
8.1
7.6
9.9
8.6
8.1
10.4
9.2
8.7
11.0
9.7
9.2
11.5
10.3
9.8
12.1
10.8
10.3
12.6
11.4
10.8
13.1
11.9
11.4
13.7
12.4
11.9
14.2
12.9
12.4
14.7
13.4
12.9
15.2
14.0
13.5
15.7
14.5
14.0
16.2
15.0
14.5
16.8
15.5
15.0
17.3
16.0
15.5
17.8
16.5
16.0
18.3
17.0
16.5
18.8
17.5
17.0
19.3
18.1
17.5
19.8
18.6
18.0
20.3
19.1
18.6
20.8
19.6
19.1
21.3
20.1
19.6
21.8
20.6
20.1
22.3
21.1
20.6
Code Rate
1.535948
1.612745
1.843137
5/6
7/8
2/3
Eb/No
Eb/No
Eb/No
-0.1
-0.3
-0.9
0.7
0.5
-0.1
1.5
1.3
0.7
2.2
2.0
1.4
2.9
2.7
2.1
3.5
3.3
2.7
4.2
4.0
3.4
4.8
4.6
4.0
5.4
5.2
4.6
6.0
5.8
5.2
6.6
6.3
5.8
7.1
6.9
6.3
7.7
7.5
6.9
8.2
8.0
7.4
8.8
8.6
8.0
9.3
9.1
8.5
9.9
9.6
9.1
10.4
10.2
9.6
10.9
10.7
10.1
11.4
11.2
10.6
12.0
11.7
11.2
12.5
12.3
11.7
13.0
12.8
12.2
13.5
13.3
12.7
14.0
13.8
13.2
14.5
14.3
13.7
15.0
14.8
14.3
15.6
15.3
14.8
16.1
15.9
15.3
16.6
16.4
15.8
17.1
16.9
16.3
17.6
17.4
16.8
18.1
17.9
17.3
18.6
18.4
17.8
19.1
18.9
18.3
19.6
19.4
18.8
20.1
19.9
19.3
B–3
Revision 9
MN/CDM710.IOM
8PSK
2.303922
2.457516
2.764706
5/6
8/9
3/4
Eb/No
Eb/No
Eb/No
-1.8
-2.1
-2.6
-1.0
-1.3
-1.8
-0.3
-0.6
-1.1
0.4
0.2
-0.4
1.1
0.8
0.3
1.8
1.5
1.0
2.4
2.1
1.6
3.0
2.7
2.2
3.6
3.3
2.8
4.2
3.9
3.4
4.8
4.5
4.0
5.4
5.1
4.6
5.9
5.6
5.1
6.5
6.2
5.7
7.0
6.7
6.2
7.6
7.3
6.8
8.1
7.8
7.3
8.6
8.3
7.8
9.2
8.9
8.4
9.7
9.4
8.9
10.2
9.9
9.4
10.7
10.4
9.9
11.2
11.0
10.4
11.8
11.5
11.0
12.3
12.0
11.5
12.8
12.5
12.0
13.3
13.0
12.5
13.8
13.5
13.0
14.3
14.0
13.5
14.8
14.5
14.0
15.3
15.0
14.5
15.8
15.5
15.0
16.3
16.1
15.5
16.8
16.6
16.0
17.3
17.1
16.5
17.8
17.6
17.1
18.3
18.1
17.6
16QAM
3.225490
7/8
Eb/No
-3.3
-2.5
-1.7
-1.0
-0.3
0.3
0.9
1.6
2.2
2.8
3.3
3.9
4.5
5.0
5.6
6.1
6.6
7.2
7.7
8.2
8.7
9.3
9.8
10.3
10.8
11.3
11.8
12.3
12.8
13.4
13.9
14.4
14.9
15.4
15.9
16.4
16.9
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