Comtech EF Data SDM-300L3 Manuals

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Comtech EF Data SDM-300L3 Installation And Operation Manual (408 pages)

Satellite Modem

Brand: Comtech EF Data | Category: Modem | Size: 5 MB

Installation and Operation Manual
1
Customer Support
4
Table of Contents
5
About this Manual
15
Related Documents
15
Electrical Safety
17
Limitations of Warranty
20
Chapter 1. Introduction

21
- Figure 1-1. Block Diagram
  22
- Overview
  23
- Options Summary
  23
Chapter 13. Fully Accessible System Topology (Fast)

23
- Comtech EF Data Part Numbers
  24
- FAST Accessible Options
  25
- Table 1-1. FAST Options and Required Configurations
  25
- Compatibility
  26
- Description of the Modulator
  26
  - Overview
    26
  - Description
    26
  - Description of Modulation Types
    27
  - BPSK Encoding
    28
  - QPSK Encoding
    28
  - OQPSK Encoding
    29
  - 8-PSK Encoding
    29
- Description of the Demodulator
  30
  - Overview
    30
  - Figure 1-2. Demodulator Block Diagram
    30
  - Functional Description
    31
- Description of Monitor & Control
  32
  - Overview
    32
  - Functional Description
    33
- Dimensional Envelope
  35
- Figure 1-4. Dimensional Envelope Drawing
  35
Chapter 2. Installation/ Upgrades

37
Chapter 3. Connector Pinouts

55
Chapter 4. Front Panel Operation

69
- Front Panel
  69
- Figure 4-1. Front Panel View
  69
- LED Indicators
  70
- Table 4-1. LED Indicators
  70
- Front Panel Keypad
  71
- Figure 4-2. Keypad
  71
- Menu System
  72
- Revision Emulation
  73
- Power Class
  74
- Menu Tree
  74
- Figure 4-3. Menu Tree
  74
- Opening Screen
  75
  - Function Select: Configuration
    75
    
    Carrier Mode
    81
    
    Modem Reference
    81
    
    Odu 10 Mhz Ref
    83
  - Figure 4-4. RF Loopback
    89
  - Figure 4-5. if Loopback
    90
  - Figure 4-6. Baseband Loopback
    98
  - Figure 4-7. Interface Loopback
    99
  - Function Select: Monitor
    133
  - Function Select Faults/Alarms
    136
  - Backward Alarms
    140
  - Function Select Stored Flts/Alms
    142
  - FUNCTION SELECT: REMOTE AUPC (Conditional)
    147
  - Function Select: Utility
    158
  - Descrambler Type
    164
- SDM-300L Custom Modem Defaults
  197
- Table 4-2. SDM-300L Custom Modem Defaults
  197
- Table 4-2. SDM-300L Custom Modem Defaults (Continued)
  198
Chapter 5. Modem Type

201
- Modem Type
  201
- Table 5-1. Modem Type Selection
  201
- IDR Operation
  202
- Table 5-2. IDR Parameter Settings
  202
- 309 IBS Operation
  203
  - VSAT IBS Operation
    203
- D&I Operation
  204
- Table 5-4. D&I Parameter Settings
  204
- ASYNC/AUPC Operation
  205
- Closed Network Operation (Comtech EF Data)
  206
- Custom Operation
  208
- Reed-Solomon Modes
  209
- Table 5-8. Reed-Solomon Modes
  209
Chapter 6 . Clocking and Rx Buffering Settings

211
- Clocking Options
  211
  - EIA-232, EIA-422, or V.35 Master/Master
    211
  - EIA-232, EIA-422, or V.35 Master/Slave
    211
- IDR/IBS G.703 Master/Master
  212
  - IDR/IBS G.703 Master/Slave
    212
  - D&I G.703 Master/Master
    213
- Buffering
  219
- Figure 6-7. Doppler Shift
  221
- Doppler
  222
- Plesiochronous
  223
- Asymmetrical Loop Timing
  224
- Figure 6-8. Transmit Section of the Asymmetrical Loop Timing Block Diagram
  225
- Figure 6-9. Receive Section of the Asymmetrical Loop Timing Block Diagram
  226
- Frame/Multiframe Length
  227
  - Multiples of the Frame Length
    227
  - Total Buffer Length
    227
  - Converting between Bits and Seconds
    228
Chapter 7. Fec and Turbo

229
- Introduction
  229
- Coding
  230
- Turbo Product Codec (Hardware Option)
  230
- Introduction
  230
- Uncoded Operation (no FEC)
  233
- Figure 7-1. Viterbi Decoder
  235
- Figure 7-2. Viterbi Decoder and Reed-Solomon
  236
- Figure 7-3. BPSK and (O)QPSK BER Performance
  237
- Figure 7-4. Turbo Product Codec
  238
- Figure 7-5. Sequential Decoder, Reed-Solomon, and 1544 Kbps
  239
- Figure 7-6. Sequential Decoder and 56 Kbps
  240
- Figure 7-7. Sequential Decoder and 1544 Kbps
  241
Chapter 8. System Checkout

243
- Interface Checkout
  244
- Figure 8-1. Fault Isolation Test Setup
  244
- Modulator Checkout
  245
- Table 8-1. Conversion to S/N and Eb/N0 Chart
  246
- Demodulator Checkout
  247
- Figure 8-2. Typical Output Spectrum
  247
- Figure 8-3. Typical Eye Constellations
  248
Chapter 9. Fault Isolation

249
- System Faults/Alarms
  250
- Faults/Alarms Display
  250
- Faults/Alarms Analysis
  250
  - Figure 9-1. SDM-300L Fault Tree
    251
  - Modulator Faults
    254
  - Demodulator Faults
    255
  - Common Equipment Faults
    256
- Introduction
  259
Chapter 10. Open Network Operations

260
- Figure 10-1. IBS Interface Block Diagram
  261
- Table 10-1. IBS Modem Defaults
  262
- Figure 10-2. IDR Interface Block Diagram
  265
- Table 10-2. IDR Modem Defaults
  266
- Drop & Insert (D&I)
  267
  - Figure 10-3. D&I with Asynchronous Overhead Data Flow
    268
  - Description of D&I Operation
    269
  - Plesiochronous Buffer
    270
  - Backward Alarm
    271
  - D&I Framing Formats
    272
- Figure 10-4. E1 Framing Formats
  273
- Figure 10-5. T1 Framing Formats
  274
- Table 10-3. D&I Modem Faults
  275
- D&I Modem Defaults
  275
- Xadpcm Voice in 64 Kbps IBS
  276
Chapter 11. Asynchronous Interface/Aupc

277
- Figure 11-1. ASYNC/AUPC Block Diagram
  279
  - Aupc
    280
  - Table 11-1. Setting AUPC Parameters
    280
  - AUPC – between Two Modems
    281
  - Self-Monitoring Local Modem AUPC Control
    282
  - Terrestrial Data Interfaces
    283
  - ASYNC Data Interfaces
    283
  - MUX Operation
    284
  - DEMUX Operation
    284
  - Buffer Operation
    284
  - Loop Timing Operation
    285
  - Baseband Loopback Operation
    285
  - Non-ASYNC Operation
    286
- ASYNC Channel EIA-485 2- and 4-Wire Operation
  286
Chapter 12. G.703

301
- Table 12-1. G.703 Specifications
  301
  - Fast System Theory
    303
  - Activation Procedure
    304
Chapter 14. Specifications

307
- Figure 14-1. Block Diagram
  308
- Specification Summary
  309
- L-Band Modulator Specification Summary
  310
- Demodulator Specification Summary
  311
- L-Band Modulator Specifications
  312
  - Digital Data Rate
    312
  - Modulation and Encoding Types
    314
  - Scrambling Types
    315
  - Modulator Frequency Reference
    315
  - Modulator Spurious Emissions
    316
  - Modulator Phase Noise
    316
  - Modulator if Output Spectrum Shape
    316
  - L-Band INMARSAT Spurious Emissions
    316
  - Differential Encoder
    317
    
    BPSK Bit Ordering
    317
    
    Interleaver (Reed-Solomon Codec)
    317
    
    Modulator Transmit Frequency (IF)
    317
    
    Transmit Frequency Change Time
    317
    
    Modulator Transmit if Output Switch
    317
    
    Modulator Transmit if Power
    317
  - Modulator Power Offset
    318
    
    Modulator I / Q Imbalance
    318
    
    Modulator Output Noise Floor
    318
    
    Modulator Spectrum Rotation
    318
    
    Modulator Output Return Loss
    318
    
    L-Band ODU Reference Signal
    318
    
    L-Band ODU Control and Monitor
    318
    
    Modulator Transmit if Test Modes
    318
    
    L-Band ODU Supply Voltage
    319
  - ODU DC Current Sense
    319
  - BPSK Encoding
    319
  - OQPSK Encoding
    320
- L-Band Demodulator Specifications
  321
  - Digital Data Rate
    321
  - Demodulation and FEC Decoding Types
    323
  - Descrambling Types
    324
  - Differential Decoder
    324
  - BPSK Bit Ordering
    324
  - Deinterleaver (Reed-Solomon Codec)
    324
  - Demodulator Spectrum Rotation
    325
  - Receive Frequency
    325
  - Input Overload
    325
    
    Demodulator Input Return Loss
    325
    
    LNB Prime Power
    325
    
    LNB Band Control
    325
    
    LNB Reference Signal
    325
    
    Receive Input Power (Composite)
    326
  - Demodulator Input Shape
    326
  - Receive Input Power (Desired Carrier)
    327
    
    Demodulator Channel Spacing/Adjacent Carrier Performance
    327
    
    Figure 14-2. Carrier Level Vs Symbol Rate
    327
- Bit Error Rate Performance
  328
- Acquisition Time
  331
  - Receive Carrier Acquisition Range
    332
  - Receive Carrier Reacquisition
    332
  - AGC Output
    332
  - Doppler Tracking Performance
    332
- Interface Specifications
  333
  - TX Clock Switching Due to Failure of Selected Clock
    333
  - TX Clock Phase Adjustment
    333
  - TX Data Phase Adjustment
    333
  - Transmit Clock Source
    333
    
    Send Clock Timing Source
    333
  - Doppler/Plesiochronous Buffer Clock Source
    334
  - RX Clock Switching Due to Failure of Selected Clock
    334
  - RX Clock Phase Adjustment
    334
    
    RX Clock Jitter
    334
  - RX Data Phase Adjustment
    334
  - Buffer Centering
    334
  - Receive Doppler/Plesiochronous Buffer Size
    335
  - Switch Faults
    335
- Decoding
  335
  - BPSK Decoding
    335
  - QPSK Decoding
    335
  - OQPSK Decoding (Optional)
    336
- Terrestrial Interface Types
  337
- IBS (Optional with Overhead Card)
  342
  - IBS Primary Data Interfaces
    342
  - IBS Clock and Dejitter
    342
    
    IBS Framing
    342
    
    IBS Engineering Service Channel
    343
    
    IBS Scrambling
    343
- Drop and Insert (Optional with Overhead Card)
  343
  - D&I Primary Data Interfaces
    344
  - D&I Framing
    344
- IDR (Optional with Overhead Card)
  344
  - IDR Primary Data Interfaces
    345
    
    IDR Framing
    345
    
    IDR Engineering Service Channel
    345
  - Optional: Dual 32 Kpps ADPCM (2XASPCM Audio)
    345
- System Specifications
  346
  - Loopback Modes
    346
    
    Test Modes
    346
  - Remote Control
    347
    
    Modem Remote Address
    347
  - Monitored Signals
    347
- Stored Faults
  348
- Stored Configurations
  348
- Interoperability Modes
  348
Chapter 15. Buc Fsk Communications

349
- Introduction
  349
- Message Structure
  350
  - Command Message Structure (IDU to ODU)
    350
  - Response Message Structure (BUC to IDU)
    351
APPENDIX B. Burst Mode Modulator Operation

399
- Metric Conversions
  407

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Comtech EF Data SDM-300L3 Manuals

Comtech EF Data SDM-300L3 Installation And Operation Manual (408 pages)

Table of Contents

Chapter 1. Introduction

Chapter 13. Fully Accessible System Topology (Fast)

Chapter 2. Installation/ Upgrades

Chapter 3. Connector Pinouts

Chapter 4. Front Panel Operation

Chapter 5. Modem Type

Chapter 6 . Clocking and Rx Buffering Settings

Chapter 7. Fec and Turbo

Chapter 8. System Checkout

Chapter 9. Fault Isolation

Chapter 10. Open Network Operations

Chapter 11. Asynchronous Interface/Aupc

Chapter 12. G.703

Chapter 14. Specifications

Chapter 15. Buc Fsk Communications

APPENDIX B. Burst Mode Modulator Operation

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