User Manuals: Comtech EF Data SDM-9000 Satellite Modem

Manuals and User Guides for Comtech EF Data SDM-9000 Satellite Modem. We have 1 Comtech EF Data SDM-9000 Satellite Modem manual available for free PDF download: Installation And Operation Manual

Comtech EF Data SDM-9000 Installation And Operation Manual

Comtech EF Data SDM-9000 Installation And Operation Manual (256 pages)

Brand: Comtech EF Data | Category: Modem | Size: 3 MB

Table of Contents

Installation and Operation Manual
9
Customer Support
10
Table of Contents
11
About this Manual
19
Related Documents
19
Limitations of Warranty
22
Chapter 1. Introduction

23
- Figure 1-1. SDM-9000
  23
Overview

24
- Nyquist Filter Printed Circuit Boards
  25
- Description
  26
- Figure 1-2. Modular Construction
  26
- Figure 1-3. SDM-9000 Block Diagram
  27
- Options
  28
  - Reed-Solomon Codec
    28
  - 8Psk/16Qam
    28
  - Direct Broadcast Satellite
    29
Modem Assemblies

30
Modem Specifications

32
- Table 1-1. SDM-9000 Specifications
  32
BER Performance Specifications

34
Chapter 2. Installation

43
Unpacking

43
System Options

44
System Installation

45
- Figure 2-1. SDM-9000 Dimensional Drawing
  46
External Connectors

47
- Figure 2-2. SDM-9000 Rear Panel View
  47
  - Table 2-1. Modem Rear Panel Connectors
    47
  - External Clock (CP5)
    48
  - Receive Data (CP3)
    48
  - RX/IF Input (CP2)
    48
  - Send Data (CP4)
    48
  - TX/IF Output (CP1)
    48
  - Remote (J6)
    49
  - Fault (J7)
    50
  - DATA I/O (ESC) Interface (J8)
    51
    
    G.703 (IDR) Interface (J8) (Audio Mode)
    52
    
    IDR) Interface (J8) (Audio Mode)
    52
    
    IDR) Interface (J8) (64 Kbit/S Mode)
    53
    
    ECL Interface (J8)
    54
    
    MIL-STD-188 Interface (J8)
    55
  - Aux 1 (J9)
    56
  - Alarms (J10)
    57
  - AC Power
    58
  - DC Power
    58
  - Ground (GND)
    58
Chapter 3. Configuration

59
Display/M&C

59
- Figure 3-1. Display/M&C PCB
  60
- Table 3-1. Display/M&C PCB Jumper Settings
  60
Modulator

61
- Figure 3-2. Modulator PCB (AS/3969)
  61
- Table 3-2. Modulator PCB Jumper Settings
  61
Demodulator

62
- Figure 3-3. Demodulator PCB (AS/3970)
  62
- Table 3-3. Demodulator PCB Jumper Settings
  62
Interface

63
Nyquist Filter Configuration

67
- Compatibility
  68
- Installation
  68
  - Unpacking Instructions
    68
  - Tools Required
    69
  - Installation Procedure
    69
    
    Nyquist Filter Removal
    69
    
    Figure 3-7. Nyquist Filter Installation
    70
    
    Nyquist Filter Replacement
    71
Software Configuration

72
- Revision Emulation
  72
- Table 3-5. SDM-9000 Revision Emulation
  72
- Remote Interface Specification
  73
  - Remote Baud Rate
    73
  - Remote Address
    73
- Modem Defaults
  74
- Table 3-6. Modem Defaults
  74
Chapter 4. Operation

75
Front Panel

75
- Figure 4-1. SDM-9000 Front Panel View
  75
  - LED Indicators
    76
  - Front Panel Controls
    77
Menu System

78
- Figure 4-2. Main Menu
  78
  - Configuration
    79
    
    Figure 4-3. Configuration Modulator Menu
    80
    
    Configuration Modulator
    81
    
    Figure 4-4. Configuration Demodulator Menu
    84
    
    Configuration Demodulator
    85
    
    Figure 4-5. Configuration Interface Menu
    88
    
    Configuration Interface
    89
    
    Configuration Save
    93
    
    Figure 4-6. Configuration Save Menu
    93
    
    Configuration Recall
    94
    
    Figure 4-7. Configuration Recall Menu
    94
    
    Figure 4-8. Monitor Menu
    95
  - Monitor
    96
  - Figure 4-9. Faults/Alarm Menu
    97
  - Faults/Alarms
    98
    
    Modulator Faults
    99
    
    Demodulator Faults
    100
    
    TX Interface Faults
    101
    
    RX Interface Faults
    102
    
    Backward Alarms
    103
    
    Common Equipment Faults
    103
    
    Figure 4-10. Stored Faults/Alarms Menu
    105
  - Stored Faults/Alarms
    106
  - Utility
    108
    
    Figure 4-11. Utility Modulator Menu
    109
    
    Utility Modulator
    110
    
    Figure 4-12. Utility Demodulator Menu
    111
    
    Utility Demodulator
    112
    
    Figure 4-13. Utility Interface Menu
    113
    
    Figure 4-13. Utility Interface Menu Continued
    114
    
    Utility Interface
    115
    
    Figure 4-14. Utility System Menu
    117
    
    Utility System
    118
    
    Figure 4-15. Utility Modem Type Menu
    121
    
    Utility Modem Type
    122
    
    Figure 4-16. Utility Factory Setup Menu
    123
    
    Utility Factory Setup
    123
    
    Figure 4-17. RF Loopback
    124
    
    Figure 4-18. if Loopback
    124
    
    Figure 4-19. Baseband Loopback
    125
    
    Figure 4-20. Interface Loopback
    125
Clocking Options

126
- Interface Clocking
  126
  - TX Timing
    126
  - RX Timing
    126
    
    RX Timing (with Buffer)
    126
    
    RX Timing (Without Buffer)
    126
- ECL/MIL-STD-188 Interface Clocking
  127
  - TX Timing
    127
  - RX Timing
    127
    
    RX Timing (with Buffer)
    127
    
    RX Timing (Without Buffer)
    127
    
    Figure 4-21. G.703 Interface Clocking Diagram
    128
    
    Figure 4-22. ECL/MIL-STD-188 Interface Clocking Diagram
    128
Chapter 5. Theory of Operation

129
Display/M&C

129
- Description
  129
- Theory of Operation
  130
- Figure 5-1. Display/M&C Block Diagram
  130
Modulator

132
- Description
  132
- Figure 5-2. Modulator Baseband Section Block Diagram
  132
- Figure 5-3. Modulator RF Section Block Diagram
  133
- Specifications
  134
- Theory of Operation
  135
- Theory of Modulation Types
  137
  - Description
    137
  - QPSK Encoding/Modulation
    137
  - 8PSK Encoding/Modulation
    138
  - 16QAM Encoding/Modulation
    138
Demodulator

139
- Description
  139
- Specifications
  139
- Figure 5-4. Demodulator Block Diagram
  140
- Theory of Operation
  141
Viterbi Decoder

144
- Description
  144
- Specifications
  144
- Figure 5-5. Viterbi Decoder Block Diagram
  144
- Theory of Operation
  145
Interface

146
- Description
  146
- Digital Interface Specifications
  147
  - G.703
    148
  - Ecl
    148
  - Mil-Std-188
    148
- Theory of Operation
  149
  - Figure 5-6. Interface Block Diagram
    150
  - Transmit Data Path
    151
  - Receive Data Path
    152
  - Loopbacks
    154
    
    Baseband Loopback
    154
    
    Figure 5-7. Baseband Loopback Block Diagram
    154
    
    Interface Loopback
    155
  - Engineering Service Channel (ESC)
    155
  - Figure 5-8. Interface Loopback Block Diagram
    155
Backward Alarm Theory and Connections

156
Chapter 6. Maintenance

159
System Checkout

159
- Interface
  159
- Figure 6-1. Fault Isolation Test Setup
  160
- Modulator
  161
- Figure 6-2. Typical Output Spectrum (with Noise)
  162
- Figure 6-3. Typical Output Spectrum (Without Noise)
  162
- Demodulator
  166
- Figure 6-4. Typical Eye Constellations
  167
- Test Points
  168
  - Interface PCB
    168
  - Figure 6-5. Interface PCB Test Points
    168
  - Modulator PCB
    169
  - Figure 6-6. Modulator PCB Test Points
    169
  - Demodulator PCB
    170
  - Figure 6-7. Demodulator PCB Test Points
    170
Fault Isolation

171
- Guidelines
  171
- System Faults/Alarms
  172
  - Table 6-4. SDM-9000 Modem Fault Tree
    173
  - Fault/Alarm Display and Description
    176
  - Fault/Alarm Analysis
    177
    
    Modulator Faults
    177
    
    Demodulator Faults
    178
    
    TX Interface Faults
    180
    
    RX Interface Faults
    181
    
    Common Equipment Faults
    183
    
    Backward Alarms
    184
Module Replacement

185
Module Identification

185
Repacking for Shipment

185
Appendix A. Options

187
Reed-Solomon Codec

187
- Figure A-1. Reed-Solomon Codec Block Diagram
  187
  - Specifications
    188
  - Theory of Operation
    188
    
    A.1.1 Specifications
    188
    
    Figure A-2. Reed-Solomon Encoder Section Block Diagram
    188
    
    Reed-Solomon Encoder
    188
    
    Figure A-3. Reed-Solomon Codec Frame Format
    190
    
    Figure A-4. Reed-Solomon Decoder Section Block Diagram
    191
    
    Reed-Solomon Decoder
    191
  - Installation
    193
    
    A.1.3 Installation
    193
    
    Tools Required
    193
    
    Unpacking Instructions
    193
    
    A.1.3.3 Installation Procedure
    194
    
    Installation Procedure
    194
    
    Figure A-5. Reed-Solomon Installation
    195
Direct Broadcast Satellite

196
ESC 64 Kbit/S Data Option

217
Appendix B. Remote Control Operation

219
General

219
- B.1 General
  219
Message Structure

220
- Start Character
  220
- Device Address
  220
- B.2 Message Structure
  220
- Command/Responses
  221
- End Character
  221
- B.2.3 Command/Responses
  221
Configuration Commands/Responses

222
- Modulator
  222
- Demodulator
  223
- B.3.2 Demodulator
  223
- Interface
  224
- B.3.3 Interface
  224
- System
  227
- B.3.4 System
  227
Status Commands/Responses

228
- Configuration
  228
- Error Performance
  233
- B.4.2 Error Performance
  233
Stored Faults

237
- B.5 Stored Faults
  237
Glossary

249
- Metric Conversions
  255

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