Comtech-ef-data SDM-300A User Manual Page 140
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- Table of contents
- TROUBLESHOOTING
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SDM-300A Satellite Modem Revision 6
Front Panel Operation MN/SDM300A.IOM
5–46
FUNCTION SELECT: CONFIGURATION: LOCAL AUPC:
REMOTE CL ACTION (CONDITIONAL)
REMOTE CL ACTION
HOLD
IMPORTANT
Conditional: This menu is displayed when Local Modem AUPC = ON
located under the Utility: Modem Type menu.
Programs the Remote Carrier Loss:
HOLD
Upon Carrier Loss (CL) the carrier level remains at the level just before carrier loss.
NOMINAL
Upon CL the TX Carrier Level reverts to the Nominal Power Level programmed under
Configuration: Local AUPC: Nominal Power.
MAXIMUM
Upon CL the TX Carrier level is programmed to the level programmed under
Configuration: Local AUPC: Maximum Power.
- SDM-300A 1
- Errata A 3
- Errata B 4
- Customer Support 6
- Table of Contents 7
- Preface MN/SDM300A.IOM 10
- ..........19–10 14
- Figures 16
- About this Manual 21
- Related Documents 21
- Conventions and References 21
- Cautions and Warnings 21
- Examples of 22
- Multi-Hazard 22
- Formats 22
- ELECTRICAL SAFETY 23
- Installation 24
- Warranty Policy 26
- Limitations of Warranty 26
- Exclusive Remedies 26
- Disclaimer 26
- Chapter 1. Introduction 27
- Introduction MN/SDM300A.IOM 28
- 1.1 Overview 29
- 1.1.1 Modem Functions 29
- 1.1.2 Standard Features 29
- 1.1.4 Modes of Operation 30
- 1.2 Options 32
- Optional) 33
- 1.4 Compatibility 35
- 1.5 Breakout Panels 35
- 1.5.2 UB-530 Breakout Panel 35
- 1.5.3 UB-54 Breakout Panel 36
- SS/300A-00023 Reserved 37
- 1.7 New in this Release 39
- 2.1.1 Theory of Operation 41
- 2.1.2 Remote Baud Rate 44
- 2.1.3 Remote Address 44
- • 8-PSK 45
- 2.2.1 Theory of Operation 46
- ± 1 x 10 47
- OPTIONAL 48
- 2.3.1 Theory of Operation 49
- 2.5.1 Available Interfaces 53
- 2.5.3 Closed Network 54
- 2.5.4 Open Network 54
- Chapter 3. Installation/ 57
- Upgrades 57
- 3.2 Installation 58
- Description Application 60
- Phillips Screwdriver 60
- 3.3.2 Hardware Upgrades 62
- 3.4 Reed-Solomon PCB 62
- 3.4.1 Unpacking 62
- 3.4.2 Installation 62
- 3.5.1 Unpacking 64
- 3.5.2 Installation 65
- U74 U86 67
- TURBO CODEC 67
- INSTALLED 67
- Turbo Setup 68
- DUPLEX 72
- REED-SOLOMON 72
- 3.8 Hardware Upgrades 76
- CHANGEABLE 78
- TX/IF OUTPUT 81
- TX/IF OUTP UT 81
- 4.1.10 Power Entry 93
- 4.1.10.1 AC Power Connector 93
- 4.1.10.2 48VDC Option 93
- Chapter 5. FRONT PANEL 95
- OPERATION 95
- 5.1.1 LED Indicators 96
- 5.1.2 Front Panel Keypad 97
- 5.2 Menu System 98
- 5.4 Opening Screen 101
- TX-X CODE RATE 102
- TX-IF FREQUENCY 104
- TX POWER LEVEL 105
- + 0.0 dBm 105
- SCRAMBLER 105
- CARRIER MODE 106
- DIFF. ENCODER 106
- MODEM REFERENCE 107
- RS ENCODER (CONDITIONAL) 107
- RX-X CODE RATE 108
- RX-IF FREQUENCY 110
- DIFF. DECODER 110
- RF LOOP BACK 111
- IF LOOP BACK 112
- BER THRESHOLD 113
- SWEEP CENTER 113
- SWEEP RANGE 114
- 60000 Hz 114
- REACQUISITION 114
- 0 SECONDS 114
- RS DECODER (CONDITIONAL) 115
- TX CLOCK SOURCE 116
- TX CLOCK PHASE 117
- BUFFER CLOCK 118
- RX (SATELLITE) 118
- (CONDITIONAL) 119
- BUFFER CENTER 120
- RX CLOCK PHASE 120
- B-BAND LOOP BACK 121
- INTRFC LOOP BACK 122
- (CONDITIONAL) 123
- FAULT (CONDITIONAL) 124
- PATTERN (CONDITIONAL) 125
- FORMAT (CONDITIONAL) 125
- SERVICE CHANNEL ADJUST 126
- Examples: 127
- IMPORTANT 130
- INSERT CHANNEL 131
- ASSIGNMENTS 131
- BAUD (CONDITIONAL) 132
- LENGTH (CONDITIONAL) 133
- STOP (CONDITIONAL) 134
- PARITY (CONDITIONAL) 135
- AUPC ENABLE (CONDITIONAL) 136
- NOMINAL POWER (CONDITIONAL) 137
- MINIMUM POWER (CONDITIONAL) 137
- MAXIMUM POWER (CONDITIONAL) 138
- TARGET Eb/No (CONDITIONAL) 138
- TRACKING RATE (CONDITIONAL) 139
- REMOTE CL ACTION 140
- CONFIGURATION 141
- AGGREGATE DATA RATE 143
- (OPTIONAL/CONDITIONAL) 143
- RX CHAN #4 PHASE 149
- FUNCTION SELECT 150
- MONITOR 150
- RAW BER 150
- 2.4 E-3 150
- CORRECTED BER 151
- 4.0 E-3 151
- 16.0 dB 151
- FRAME ERRORS 153
- 2047 errors 153
- FAULTS/ALARMS 154
- MODULATOR 155
- 155
- DEMODULATOR 155
- + 155
- TX INTERFACE 156
- ---+ 156
- RX INTERFACE 157
- 158
- BACKWARD ALARMS 158
- STORED FLTS/ALMS 159
- RX INTERFACE X 161
- STORED TIME/DATE 161
- COMMON X 161
- REMOTE AUPC 163
- ENABLE (CONDITIONAL) 164
- LOOP BACK (CONDITIONAL) 165
- PATTERN 165
- 2047 ERRORS 166
- (CONDITIONAL) 168
- ASSIGN TRANSMIT FILTERS 169
- MOD POWER OFFSET 170
- + 0.0 dB 170
- ENCODER TYPE (CONDITIONAL) 171
- FILTERS 174
- TYPE (CONDITIONAL) 176
- CONTROL (CONDITIONAL) 183
- YEAR DISPLAY 188
- 2 - DIGIT 188
- TEST MODE STATUS 188
- _ _ _ _ _ _ _ _ 188
- MONTH:DAY:YEAR 189
- DEMO MODE 192
- MASTER RESET 192
- HARD/SOFT 192
- CODE RATE/DATA RATE 193
- G.703 OPERATION 194
- UNBALANCED 194
- MODEM EMULATION 195
- DISABLED 195
- REV EMULATION 195
- CURRENT_VERSION 195
- MODEM OPTIONS 196
- CARD #1 OPTIONS 198
- CARD #2 OPTIONS 198
- CONFIGURATION CODE - MODEM 201
- to execute the change 202
- UTILITY 203
- FACTORY SET-UP 203
- 5.5 Custom Modem Defaults 204
- Chapter 6. Modem Type 209
- 6.1.1 IDR Operation 210
- 6.1.2 IBS Operation 211
- 6.1.3 D&I Operation 212
- 6.1.4 ASYNC/AUPC Operation 213
- 6.1.6 Custom Operation 215
- 8-PSK 5/6 218
- Chapter 7. Clocking Options 221
- RECOVERY 225
- • Blocking diagram 227
- • Transmit clock options 227
- • Buffer clock options 227
- RX CLOCK = INSERT 228
- Chapter 8. Buffering 229
- Figure 8-1. Clock Slip 230
- Figure 8-2. Doppler Shift 231
- 8.2 Buffer Size 232
- 8.3 Doppler 232
- 8.4 Plesiochronous 233
- Revision 6 234
- Buffering SDM300A.IOM 234
- Chapter 9. Forward Error 237
- Correction (Options) 237
- 9.2 Viterbi 238
- 9.3 Sequential 239
- 9.4.1 Closed Network Modes 241
- 9.4.2 Open Network Modes 241
- 9.6.1 Introduction 243
- 3/4 Rate 247
- 1/2 Rate 247
- 7/8 Rate 247
- Specification 247
- 1/2 Rate 3/4 Rate 250
- SPECIFICATIONS 250
- 1/2 Rate 3/4 Rate 7/8 Rate 251
- 1/1 Rate 255
- Eb/No (dB) 256
- Chapter 10. Open Network 257
- Operations 257
- 10.2.1 IBS Specifications 260
- 10.2.2 IBS Modem Defaults 261
- 10.2.5 IBS Framing 262
- 10.2.7 IBS Scrambling 262
- 10.3.1 IDR Specifications 266
- 0 dB V.35 Scrambler ON 267
- 10.3. 4 IDR Framing 268
- 10–14 270
- TRANSMIT SECTION 272
- RECEIVE SECTION 272
- Figure 10-4. D&I 273
- 10.4.2 Theory of Operation 274
- 10.4.3 Data Interference 274
- 10.4.4 Transmitted MUX 274
- 10.4.5 Receive DEMUX 275
- 10.4.6 Plesiochronous Buffer 275
- 10.4.8 Backward Alarm 276
- 10–22 278
- 10.4.12 D&I Framing 280
- 10.5 G.703 281
- 10.5.1 G.703 Specifications 281
- 10–26 282
- Chapter 11. Asynchronous 283
- Interface/AUPC 283
- . ASYNC/AUPC Block Diagram 285
- 11.2 AUPC 286
- TX and RX Reed-Solomon 287
- 11.2.1.1 Remote AUPC 288
- 11.3 ASYNC 289
- 11.3.3 MUX Operation 290
- 11.3.4 DEMUX Operation 290
- 11.3.5 Buffer Operation 290
- 11.3.8 Non-ASYNC Operation 292
- ASYNC REMOTE OPERATION 294
- LOCAL END REMOTE END 295
- EIA-485 [4-Wire]) 300
- [2-Wire]) 301
- [4-Wire]) 304
- Timing 307
- Chapter 13. Duplex-Reed 313
- Solomon Card Option 313
- Chapter 14. 8-Channel 315
- Multiplexer 315
- 14.2 Installation 316
- Chapter 15. Flex Mux 321
- Flex Mux MN/SDM300A.IOM 322
- 15.2 Installation 326
- Chapter 16. FAST Accessible 329
- Options 329
- 16.3 FAST System Theory 331
- 16.4 Implementation 331
- 16.4.1 Activation Procedure 331
- 16.4.1.2 Select Features: 332
- 16.4.1.5 Verify Upgrade 334
- 16.5 Variable Data Rates 334
- Chapter 17. FLASH Upgrading 335
- Chapter 18. Troubleshooting 337
- 18.2 Interface Checkout 338
- 18.2.1 Modulator Checkout 339
- 18.2.2 Demodulator Checkout 342
- WITH NOISE 343
- WITHOUT NOISE 343
- 18.3 Fault Isolation 344
- 18.3.1 System Faults/Alarms 344
- 18.3.2 Faults/Alarms Display 348
- 18.3.3.1 Modulator Faults 349
- 18.3.3.2 Demodulator Faults 350
- Chapter 19. Specifications 357
- 19.4.1 Digital Data Rate 361
- 19.4.3 Scrambling Types 364
- 19.4.4 Differential Encoder 364
- 19.4.5 BPSK Bit Ordering 364
- Capacitively coupled 365
- Dual sideband 367
- 19.5.1 Digital Data Rate 368
- 19.5.3 Descrambling Types 371
- 19.5.4 Differential Decoder 371
- 19.5.5 BPSK Bit Ordering 371
- (Optional) 375
- (Optional) 375
- Reed-Solomon (Optional) 376
- 19.6.11 BER Threshold 378
- 19.7 Acquisition Time 379
- 19.7.3 AGC Output 380
- 19.8.1 Transmit Clock Source 380
- 19.8.2.13 Buffer Centering 383
- 19.8.2.14 Switch Faults 383
- 19.9.1 Universal 383
- 19.9.2 EIA-232 Specification 384
- 19.10 System Specifications 388
- 19.10.1 Loopback Modes 388
- 19.10.2 Test Modes 388
- 19.10.3 Remote Control 389
- 19.10.4 Modem Remote Address 389
- 19.10.5 Monitored Signals 389
- 19.11 Dimenionsal Envelope 391
- Appendix A. Remote Control 393
- Operation 393
- A.2.1 Start Character 394
- A.2.2 Device Address 394
- A.4 End Character 395
- Command: 397
- (MPO_) 397
- Modulator Output Power 420
- AUPC Local Power Enable 421
- A.15 Modem Fault Status 430
- Error Performance Status 433
- A.16 Stored Faults 437
- A.20 Miscellaneous Status 456
- Glossary 461
- Glossary MN/SDM300A.IOM 464
- (Optional), 10-4 467
- QPSK, 19-21 467
- METRIC CONVERSIONS 469
- Units of Length 469
- Temperature Conversions 469
- Units of Weight 469
- 480 • 333 • 2200 PHONE 470
- 480 • 333 • 2161 470
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