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CDM-600 Satellite Modem Revision 7
Forward Error Correction Options MN/CDM600.IOM
7–20
Figure 7-8. Comtech EF Data Turbo Product Codec
Rate 3/4 QPSK/OQPSK, 8-PSK and 16-QAM
1E-9
1E-8
1E-7
1E-6
1E-5
1E-4
1E-3
1E-2
1E-1
1 2 3 4 5 6 7 8 9 10 11 12
Eb/No in dB
Uncoded
BPSK/QPSK
Comtech Turbo Product Codec
Rate 3/4 QPSK/OQPSK,
8-PSK and 16-QAM
1 2 3 4 5 6 7 8 9 10 11 1
2
BER
Spec limit
Rate 3/4
16-QAM
Spec lim it
Rate 3/4
8-PSK
Spec limit
Rate 3/4
QPSK/OQPSK
Typical performance
Uncoded
8-PSK
Uncoded
16-QAM
Performance with CDM-600
Firmware Version 1.1.5
(or higher )
- CD 1
- New Features/Changes 4
- Addendum B 7
- Change Specifics: 8
- Collating Instructions 8
- MN/CDM600.IOM Revision 7 14
- AD-CDM600-AB7 14
- CDM-600 Satellite Modem 14
- Cable Drawings 14
- Errata A 15
- Errata B 17
- Errata C 18
- Errata D 19
- Filename: T_ERRATA 2 20
- Errata E 21
- Errata F 23
- Errata G 25
- CDM-600 29
- Preface MN/CDM600.IOM 30
- Table of Contents 31
- Figures 38
- Preface 39
- Electrical Safety 41
- Environmental 41
- Installation 42
- Warranty Policy 44
- Limitations of Warranty 44
- Exclusive Remedies 44
- Disclaimer 44
- Chapter 1. INTRODUCTION 45
- 1.1 Standard Features 46
- 1.1.1 AUPC 46
- 1.1.3 Verification 47
- 1.1.4 Data Interfaces 47
- 1.2 Major Assemblies 48
- Introduction MN/CDM600.IOM 49
- 1.3.2 FAST System Theory 50
- 1.3.3 Implementation 50
- 1.3.4 Hardware Options 51
- 1.4 Compatibility 52
- 1.5 New in this Release 53
- Chapter 2. INSTALLATION 55
- 2.2 Mounting 56
- Installation MN/CDM600.IOM 57
- MN/CDM600.IOM 2–3 57
- 2.3 Configuration 58
- 2.4 Select Internal IF Loop 58
- 2.5 Connect External Cables 58
- Chapter 3. FUNCTIONAL 59
- DESCRIPTION 59
- Chapter 4. PHYSICAL 61
- 4.3 Rear Panel 62
- 4.3.6 Audio Connector (P4A) 63
- 4.4 Dimensional Envelope 66
- Chapter 5. CONNECTOR 67
- PINOUTS 67
- 5.2 BNC Connectors 68
- 5.8 Unit Alarms (P5B) 71
- 5.11 AC Power Connector 73
- 5.12 Ground Connector 73
- Chapter 6. FRONT PANEL 75
- Figure 6-3. Menu Trees 78
- 6.2 Opening Screen 79
- 6.3 Main Menu 79
- 6.3.1 CONFIG 80
- 6.3.1.1 CONFIG: ALL 81
- 6.3.1.2 CONFIG: MODE 81
- 6.3.1.3 CONFIG: TX 82
- CONFIG: TX: TX-IF 82
- CONFIG: TX: POWER 83
- CONFIG: TX: ENCODER 84
- CONFIG: TX: MODULATION 86
- CONFIG: TX: DATA 87
- CONFIG: TX: SCRAMBLER 87
- 6.3.1.4 CONFIG: RX 88
- CONFIG: RX: RX-IF 88
- CONFIG: RX: DECODER 89
- CONFIG: RX: DEMODULATION 91
- CONFIG: RX: DATA 91
- CONFIG: RX: DESCRAMBLER 92
- CONFIG: RX: EbNo 93
- 6.3.1.5 CONFIG: CLOCKS 93
- CONFIG: CLOCKS: TX CLOCK 93
- CONFIG: CLOCKS: EXT-FREQ-REF 95
- INS-TYPE= T1-D4 CHAN/TS 96
- DRP-CH: 1 2 3 4 96
- TS: 01 02 03 04 96
- 6.3.1.7 CONFIG: EDMAC 97
- 6.3.1.8 CONFIG: MISC 97
- CONFIG: MISC: G.703 CODE 98
- CONFIG: MISC: IDR-ESC-TYPE 98
- CONFIG: MISC: WARM-UP 99
- 6.3.1.10 CONFIG: MASK 101
- CONFIG: MASK: AIS 101
- CONFIG: MASK: BUFFER SLIP 102
- CONFIG: MASK: RX-IF 102
- CONFIG: MASK: TERR-ALM 103
- 6.3.1.11 CONFIG: IMPEDANCE 103
- 6.3.1.12 CONFIG: STATISTICS 103
- 6.3.2 TEST 104
- Figure 6-4. Loopback Modes 105
- 6.3.3 INFORMATION 106
- INFO:ALL 106
- INFO: ID 106
- INFO: MODE 106
- INFO: TX 107
- INFO: RX 107
- INFO: CLOCKS 108
- INFO: EDMAC 108
- INFO: DROP TYPE 108
- INFO: INSERT TYPE 108
- INFO: REMOTE 109
- INFO: ALARMS MASK 109
- INFO: MISC 109
- 6.3.4 MONITOR 110
- MONITOR: LIVE-ALARMS 110
- Clear All: YES or NO 111
- 6.3.4.2 MONITOR: STATISTICS 112
- 6.3.4.4 MONITOR: AUPC-PARAMS 113
- 6.3.5 STORE/LOAD 113
- 6.3.6 UTILITIES 114
- 6.3.6.1 UTILITIES: SET-RTC 114
- 6.3.6.3 UTILITIES: LAMP 115
- 6.3.7 ODU 116
- 6.3.8 FAST 116
- 6.3.8.1 FAST: SET 116
- 6.3.8.2 FAST: VIEW 116
- Chapter 7. FORWARD ERROR 117
- CORRECTION OPTIONS 117
- 7.3 Sequential 118
- IMPORTANT 119
- 7.7.1 Introduction 122
- 7.7.2 LDPC versus TPC 123
- Decoding 129
- Sequential 130
- 1024 kbps 131
- 2048 kbps 132
- Viterbi with 133
- RS 220,200 133
- Outer Code 133
- 8-PSK/TCM Rate 2/3 135
- Decoding, with and 135
- Comtech Turbo Product Codec 136
- Rate 3/4 QPSK/OQPSK 136
- 8-PSK and 16-QAM 136
- Rate 7/8 QPSK/OQPSK 137
- Rate 1/2 QPSK/OQPSK 138
- Rate 0.95 QPSK/OQPSK 138
- Rate 21/44 BPSK 139
- Rate 5/16 BPSK 139
- Differential 141
- Encoding 141
- No FEC, no 141
- LDPC, BPSK, QPSK 142
- (O)QPSK, Rate 1/2 142
- LDPC Rate 2/3 143
- QPSK/OQPSK/8-PSK/ 143
- LDPC, Rate 3/4 144
- QPSK/OQPSK/ 144
- LDPC Rate 3/4 145
- 8-PSK/16-QAM 145
- Chapter 8. OFFSET QPSK 147
- OPERATION 147
- MN/CDM600.IOM 148
- Chapter 9. OPEN NETWORK 149
- OPERATIONS 149
- 9.2.2 IBS Framing 150
- 9.2.4 IBS Scrambling 150
- 9.3 Drop and Insert 150
- 9.3.2 D&I Framing 151
- 9.4 IDR 152
- DROP AND INSERT (D&I) 155
- 10.1.2 Tx Terrestrial 156
- 10.1.3 Rx Loop-Timed, RX=TX 156
- 10.1.5 External Clock 156
- 10.2 Receive Clocking 157
- 10.3 X.21 Notes 157
- Figure 10-1. Tx Clock Modes 158
- Figure 10-2. Rx Clock Modes 159
- 10.4 Drop and Insert 160
- 10.5 Frame Formats 161
- 10.6 Time Slot Selection 162
- • Insert Data Out (IDO) 163
- • Drop Data In (DDI) 163
- • Drop Data Out (DDO) 163
- • Insert Data In (IDI) 163
- BIT ERROR TEST 164
- Chapter 11. EDMAC CHANNEL 167
- 11.2 M&C Connection 168
- 11.3 Setup Summary 169
- 11.4 Drop & Insert ++ 170
- POWER CONTROL 171
- 12.2.1 Target Eb/No 172
- 12.2.2 Max Range 172
- 12.2.3 Alarm 173
- 12.2.4 Demod Unlock 173
- 12.3 Compensation Rate 173
- 12.4 Monitoring 174
- Chapter 13. ESC++ 175
- 13.3 Available Baud Rates 176
- 13.4 Configuration 176
- Chapter 14. FLASH UPGRADING 177
- Chapter 15. SUMMARY OF 179
- SPECIFICATIONS 179
- 15.2 Demodulator 181
- 15.3 Data Interfaces 184
- 15.5 Framing Summary 185
- 15.6 Data Rate Ranges 186
- 15.7 Miscellaneous 187
- 15.8 Approvals 187
- Chapter 16. REMOTE CONTROL 189
- 16.3 EIA-232 190
- 16.4 Basic Protocol 190
- 16.5 Packet Structure 191
- 16.5.1 Start Of Packet 191
- 16.5.2 Address 191
- 16.5.3 Instruction Code 192
- 16.5.5 Message Arguments 193
- 16.5.6 End Of Packet 193
- N/A 5 bytes Query only 219
- Appendix A. CABLE DRAWINGS 227
- Appendix B. Eb/No 231
- MEASUREMENT 231
- (Co+No/No )/10) 232
- Appendix C. FAST Activation 235
- Procedure 235
- C.2.3 Enter Access Codes 236
- Appendix D. ODU OPERATION 237
- MENU TREES 238
- D.2.2 ODU 239
- D.2.3 (ODU) ENABLE, 1:1 239
- (ODU,ENABLE,1:1) CSAT#2 240
- ODU Operation MN/CDM600.IOM 241
- Index MN/CDM600.IOM 254
- METRIC CONVERSIONS 257
- Units of Length 257
- Temperature Conversions 257
- Units of Weight 257
- 480 • 333 • 2200 PHONE 258
- 480 • 333 • 2161 258
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