SDM-9000 Satellite Modem
Maintenance
Rev. 4
6–5
Table 6-1. Conversion to S/N and E
b
/N
0
Chart (QPSK)
(dB)
Code Rate 1/2
Code Rate 3/4
Code Rate 7/8
(S+N)/N
S/N
E
b
/N
0
S/N
E
b
/N
0
S/N
E
b
/N
0
4.0
1.8
1.8
1.8
0.0
1.8
-0.6
4.5
2.6
2.6
2.6
0.8
2.6
0.2
5.0
3.3
3.3
3.3
1.6
3.3
0.9
5.5
4.1
4.1
4.1
2.3
4.1
1.6
6.0
4.7
4.7
4.7
3.0
4.7
2.3
6.5
5.4
5.4
5.4
3.6
5.4
3.0
7.0
6.0
6.0
6.0
4.3
6.0
3.6
7.5
6.6
6.6
6.6
4.9
6.6
4.2
8.0
7.3
7.3
7.3
5.5
7.3
4.8
8.5
7.8
7.8
7.8
6.1
7.8
5.4
9.0
8.4
8.4
8.4
6.7
8.4
6.0
9.5
9.0
9.0
9.0
7.2
9.0
6.6
10.0
9.5
9.5
9.5
7.8
9.5
7.1
10.5
10.1
10.1
10.1
8.3
10.1
7.7
11.0
10.6
10.6
10.6
8.9
10.6
8.2
11.5
11.2
11.2
11.2
9.4
11.2
8.8
12.0
11.7
11.7
11.7
10.0
11.7
9.3
12.5
12.2
12.2
12.2
10.5
12.2
9.8
13.0
12.8
12.8
12.8
11.0
12.8
10.3
13.5
13.3
13.3
13.3
11.5
13.3
10.9
14.0
13.8
13.8
13.8
12.1
13.8
11.4
14.5
14.3
14.3
14.3
12.6
14.3
11.9
15.0
14.9
14.9
14.9
13.1
14.9
12.4
15.5
15.4
15.4
15.4
13.6
15.4
12.9
16.0
15.9
15.9
15.9
14.1
15.9
13.5
16.5
16.4
16.4
16.4
14.6
16.4
14.0
17.0
16.9
16.9
16.9
15.2
16.9
14.5
17.5
17.4
17.4
17.4
15.7
17.4
15.0
18.0
17.9
17.9
17.9
16.2
17.9
15.5
18.5
18.4
18.4
18.4
16.7
18.4
16.0
19.0
18.9
18.9
18.9
17.2
18.9
16.5
19.5
19.5
19.5
19.5
17.7
19.5
17.0
20.0
20.0
20.0
20.0
18.2
20.0
17.5
Содержание SDM-9000
Страница 1: ...Part Number MN SDM9000 IOM Revision 4 SDM 9000 Satellite Modem Installation and Operation Manual...
Страница 2: ......
Страница 5: ...8 Mbit s w IDR Figure 1 7 16QAM BER Performance Curves with Reed Solomon Filename T_ERRATA 3...
Страница 8: ......
Страница 27: ...SDM 9000 Satellite Modem Introduction Rev 4 1 5 Figure 1 3 SDM 9000 Block Diagram...
Страница 42: ...Introduction SDM 9000 Satellite Modem 1 20 Rev 4 This page is intentionally left blank...
Страница 64: ...Configuration SDM 9000 Satellite Modem 3 6 Rev 4 JP1 Figure 3 4 Interface PCB AS 3971...
Страница 65: ...SDM 9000 Satellite Modem Configuration Rev 4 3 7 Figure 3 5 Interface PCB AS 4477...
Страница 66: ...Configuration SDM 9000 Satellite Modem 3 8 Rev 4 JP1 JP6 JP7 Figure 3 6 Interface PCB AS 5618...
Страница 70: ...Configuration SDM 9000 Satellite Modem 3 12 Rev 4 Figure 3 7 Nyquist Filter Installation...
Страница 83: ...SDM 9000 Satellite Modem Operation Rev 4 4 9 This page is intentionally left blank...
Страница 87: ...SDM 9000 Satellite Modem Operation Rev 4 4 13 This page is intentionally left blank...
Страница 104: ...SDM 9000 Satellite Modem Operation Rev 4 4 31 This page is intentionally left blank...
Страница 107: ...Operation SDM 9000 Satellite Modem 4 34 Rev 4 This page is intentionally left blank...
Страница 124: ...SDM 9000 Satellite Modem Operation Rev 4 4 51 Figure 4 17 RF Loopback Figure 4 18 IF Loopback...
Страница 133: ...SDM 9000 Satellite Modem Theory of Operation Rev 4 5 5 Figure 5 3 Modulator RF Section Block Diagram...
Страница 150: ...Theory of Operation SDM 9000 Satellite Modem 5 22 Rev 4 Figure 5 6 Interface Block Diagram...
Страница 158: ...Theory of Operation SDM 9000 Satellite Modem 5 30 Rev 4 This page is intentionally left blank...
Страница 167: ...SDM 9000 Satellite Modem Maintenance Rev 4 6 9 WITH NOISE WITHOUT NOISE Figure 6 4 Typical Eye Constellations...
Страница 186: ...Maintenance SDM 9000 Satellite Modem 6 28 Rev 4 This page is intentionally left blank...
Страница 218: ...Options SDM 9000 Satellite Modem A 32 Rev 4 This page is intentionally left blank...
Страница 242: ...Remote Control Operation SDM 9000 Satellite Modem B 24 Rev 4 ref SE_ command...
Страница 254: ...Glossary SDM 9000 Satellite Modem g 6 Rev 4 This page is intentionally left blank...
Страница 256: ...2114 WEST 7TH STREET TEMPE ARIZONA 85281 USA 480 333 2200 PHONE 480 333 2161 FAX...
