Preface
SDM-9000 Satelite Modem
vi
Rev. 4
5.5.2.2 ECL ........................................................................................................................................................... 5–20
5.5.2.3 MIL-STD-188 ........................................................................................................................................... 5–20
5.5.3 Theory of Operation ......................................................................................................................................... 5–21
5.5.3.1 Transmit Data Path .................................................................................................................................... 5–23
5.5.3.2 Receive Data Path ..................................................................................................................................... 5–24
5.5.3.3 Loopbacks ................................................................................................................................................. 5–26
5.5.3.3.1 Baseband Loopback ........................................................................................................................... 5–26
5.5.3.3.2 Interface Loopback ............................................................................................................................ 5–27
5.5.3.4 Engineering Service Channel (ESC) ......................................................................................................... 5–27
5.6 Backward Alarm Theory and Connections ......................................................................................................... 5–28
CHAPTER 6. MAINTENANCE......................................................................................... 6–1
6.1 System Checkout .................................................................................................................................................... 6–1
6.1.1 Interface ............................................................................................................................................................ 6–1
6.1.2 Modulator ......................................................................................................................................................... 6–3
6.1.3 Demodulator ..................................................................................................................................................... 6–8
6.1.4 Test Points ........................................................................................................................................................ 6–10
6.1.4.1 Interface PCB ............................................................................................................................................ 6–10
6.1.4.2 Modulator PCB ......................................................................................................................................... 6–11
6.1.4.3 Demodulator PCB ..................................................................................................................................... 6–12
6.2 Fault Isolation......................................................................................................................................................... 6–13
6.2.1 Guidelines ......................................................................................................................................................... 6–13
6.2.2 System Faults/Alarms ....................................................................................................................................... 6–14
6.2.2.1 Fault/Alarm Display and Description........................................................................................................ 6–18
6.2.2.2 Fault/Alarm Analysis ................................................................................................................................ 6–19
6.2.2.2.1 Modulator Faults ................................................................................................................................ 6–19
6.2.2.2.2 Demodulator Faults............................................................................................................................ 6–20
6.2.2.2.3 TX Interface Faults ............................................................................................................................ 6–22
6.2.2.2.4 RX Interface Faults ............................................................................................................................ 6–23
6.2.2.2.5 Common Equipment Faults................................................................................................................ 6–25
6.2.2.2.6 Backward Alarms............................................................................................................................... 6–26
6.3 Module Replacement ............................................................................................................................................. 6–27
6.4 Module Identification ............................................................................................................................................ 6–27
6.5 Repacking for Shipment ........................................................................................................................................ 6–27
APPENDIX A. OPTIONS .................................................................................................. A–1
A.1 Reed-Solomon Codec ............................................................................................................................................ A–1
A.1.1 Specifications................................................................................................................................................... A–2
A.1.2 Theory of Operation......................................................................................................................................... A–2
A.1.2.1 Reed-Solomon Encoder............................................................................................................................ A–2
A.1.2.2 Reed-Solomon Decoder............................................................................................................................ A–5
A.1.3 Installation ....................................................................................................................................................... A–7
A.1.3.1 Unpacking Instructions............................................................................................................................. A–7
A.1.3.2 Tools Required ......................................................................................................................................... A–7
A.1.3.3 Installation Procedure ............................................................................................................................... A–8
A.2 Direct Broadcast Satellite ..................................................................................................................................... A–10
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...
