Comtech EF Data SLM-7650 Manuals

Comtech EF Data SLM-7650 Manuals

Manuals and User Guides for Comtech EF Data SLM-7650. We have 1 Comtech EF Data SLM-7650 manual available for free PDF download: Installation And Operation Manual

Comtech EF Data SLM-7650 Installation And Operation Manual

Comtech EF Data SLM-7650 Installation And Operation Manual (194 pages)

Comtech EF Data Satellite Modem Installation and Operation Manual

Brand: Comtech EF Data | Category: Modem | Size: 2.96 MB

Table of Contents

Installation and Operation Manual
3
Customer Support
4
Table of Contents
5
About this Manual
11
Related Documents
11
Limitations of Warranty
14
Chapter 1. Introduction

15
- Overview
  15
- Figure 1-1. SLM-7650 Satellite Modem
  15
- Description
  16
- Operating Modes
  19
- Options
  19
- Table 1-1 Operating Modes
  19
- Table 1-2 SLM-7650 Options
  19
- System Specifications Summary
  20
Chapter 2. Installation

25
Chapter 3. Operation

33
- Front Panel
  33
  - Figure 3-1. SLM-7650 Front Panel
    33
  - Figure 3-2. Keypad
    34
  - Front Panel Keypad
    34
  - LED Indicators
    34
  - Table 3-1. Front Panel Indicators
    34
- Front Panel Operation
  35
  - Front Panel Menu Operation
    35
  - Table 3-2. Keypad Functions
    35
  - Figure 3-3. Main Menu
    36
  - Configuration
    37
- Digital Data Rate and Symbol Rate
  38
- Table 3-3. Data Rate Ranges
  38
- Menus
  40
  - Configuration Menu
    40
    
    Modulator Menu
    40
    
    Demodulator Menu
    42
    
    Interface Menu
    44
    
    Local AUPC Menu
    50
    
    Save Menu
    51
    
    Recall Menu
    51
  - Monitor Menu
    52
  - Faults/Alarms Menu
    53
    
    Modulator Faults
    54
    
    Demodulator Faults
    54
    
    Transmit Interface Faults
    55
    
    Receive Interface Faults
    55
    
    Common Equipment Faults
    56
  - Stored Faults/Alarms Menu
    57
  - Remote AUPC Menu
    58
    
    Remote AUPC Configuration
    58
    
    Remote AUPC Monitor
    58
  - Utility Menu
    59
    
    Utility Modulator Menu
    60
    
    Utility Demodulator Menu
    61
    
    Utility Interface Menu
    62
    
    Utility System Menu
    63
    
    Utility Modem Type Menu
    65
- Modes of Operation
  66
  - 7650-00 Operation
    66
  - Table 3-4. 7650-00 Default Parameters
    67
  - 7650-02 Operation
    68
  - Table 3-5. 7650-02 Default Parameters
    68
  - IDR Operation
    69
  - Table 3-6. IDR Default Parameters
    70
  - IBS Operation
    71
  - Table 3-7. IBS Default Parameters
    72
  - VSAT-IBS Operation
    73
  - Table 3-8. VSAT-IBS Default Parameters
    74
  - IBS-309 Operation
    75
  - Table 3-9. IBS-309 Default Parameters
    76
  - ASYNC/AUPC Operation
    77
  - Table 3-10. ASYNC/AUPC Default Parameters
    78
  - EFD Operation
    79
  - Table 3-11. EFD Default Parameters
    80
  - Custom Operation
    81
Chapter 4. Theory of Operation

83
- Overview
  83
- Built in Test
  83
- Figure 4-1. System Block Diagram
  84
- Definitions
  85
  - Differential Encoding/Decoding
    85
  - Scrambler/Descrambler
    85
    
    Self-Synchronizing Scrambler/Descrambler
    85
    
    Synchronous Scrambler/Descrambler
    86
  - Encoding/Decoding
    86
    
    Convolutional/Viterbi (CEVD)
    86
    
    Reed-Solomon
    87
    
    Table 4-1. Viterbi Decoding Summary
    87
    
    Trellis Coding
    88
    
    Table 4-2. Concatenated RS Coding Summary
    88
    
    Turbo Products Codec (Hardware Option)
    89
    
    Table 4-3. 8PSK/TCM Coding Summary
    89
    
    Table 4-4. Available TPC Modes
    90
    
    Table 4-5. Turbo Product Coding Processing Delay Comparison
    90
    
    Uncoded Operation (no FEC)
    91
  - Modulation Types
    92
    
    Bpsk
    92
    
    Qpsk
    92
    
    Offset QPSK
    92
    
    8-Psk
    92
    
    16-Qam
    93
  - Bit Error Rate
    93
  - Symbol Rate
    93
  - Symbol Rate Calculations
    94
  - Table 4-6. Reed-Solomon Factor
    94
- Theory of Operation
  95
  - Modulator
    95
  - Demodulator
    96
  - Baseband Interface
    99
    
    Monitor and Control
    99
    
    Transmit and Receive Baseband
    99
    
    Agc Output
    102
    
    Reference and Clock Distribution
    106
    
    Figure 4-2. User Provides Clock
    107
    
    Figure 4-3. Modem Provides Clock
    108
    
    Figure 4-4. Modem Clocks Internally
    109
    
    Figure 4-5. Slave Modem-Loop Timed
    110
    
    Figure 4-6. EXT Master Clock as Source
    111
    
    Figure 4-7. User Provides Data Only
    112
    
    Figure 4-8. Internal SCT Clock Selection
    113
    
    Figure 4-9. Separate Links Vs Asymmetrical Loop Timing
    114
    
    Table 4-7. Delay Variations for Inclined Orbit Satellites
    116
    
    Table 4-8. Recommended Buffer Size
    116
Chapter 5. Maintenance

119
- Modem Firmware Upgrade
  119
- Figure 5-1. Reflash Program Window
  120
- Figure 5-2. Example of Upgrade File Location
  121
- Figure 5-3. Example of Reflash Program File Location
  121
- Figure 5-4. Example of USB Drivers File Location
  121
- Fault Isolation
  122
  - Fan
    122
  - M & C Battery
    122
  - Faults/Alarms
    122
  - Table 5-1. SLM-7650 Fault Tree
    123
  - Fault/Alarm Display and Description
    126
  - Fault/Alarm Analysis
    127
    
    Modulator Faults
    127
    
    Table 5-2. Modulator Fault Information
    127
    
    Demodulator Faults
    128
    
    Table 5-3. Demodulator Fault Information
    128
    
    Transmit Interface Faults
    129
    
    Table 5-4. Transmit Interface Fault Information
    129
    
    Receive Interface Faults
    130
    
    Table 5-5. Receive Interface Fault Information
    130
    
    Common Equipment Faults
    131
    
    Table 5-6. Common Equipment Fault Information
    131
- Modem Performance Verification Tests
  132
  - Figure 5-5. Modem Verification Test Setup
    132
  - Table 5-7. Test Equipment Required
    132
  - Modulator Tests
    133
    
    Spectral Shape of the if Output
    133
    
    Carrier Null
    133
    
    Figure 5-6. DUAL Test Mode
    133
    
    Spurious Using a Spectrum Analyzer
    134
    
    Output Frequency
    134
    
    Figure 5-7. OFFSET Test Mode
    134
    
    Power Level
    135
    
    Figure 5-8. CENTER Test Mode
    135
  - Demodulator Tests
    136
    
    Dynamic Range
    136
    
    Acquisition Range
    136
  - System BER Test
    136
  - Modem Test Modes
    137
    
    IF Loopback
    137
    
    Figure 5-9. if Loopback
    137
    
    Base Band Loopback
    138
    
    Figure 5-10. Baseband Loopback
    138
    
    Carrier Modes
    139
    
    Reed-Solomon Correction off
    140
    
    2047 And MIL-188 Test Patterns
    140
    
    Table 5-8. Conversion to S/N and E B /N 0 Chart
    141
    
    Table 5-9. Reed-Solomon Overhead Correction Factor
    141
Appendix A. Remote Control Operation

143
- Metric Conversions
  193

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