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CDD-562AL/564A/L Multi-Channel Demodulator Revision 0
Eb/N0 Measurement MN-CDD562AL564AL
B–2
Example: In this diagram, the (Co+No)/No measured is 4.6 dB. If Rate 1/2 QPSK is being used, this
would correspond to an E
b
/N
0
of approximately 2.6 dB.
The exact relationship used to derive the table values is as follows:
E
b
/N
0
= 10 log
10
(10
(Co+No/No )/10)
-1) - 10 log
10
(FEC Code Rate) - 10 log
10
(bits/symbol)
Where:
E
b
/N
0
and (Co+No)/No are expressed in dB
Bits/symbol = 1 for BPSK
Bits/symbol = 2 for QPSK
Bits/symbol = 3 for 8-PSK/8-QAM
Bits/symbol = 4 for 16-QAM
Code Rate for ‘uncoded’ = 1
- CDD-562AL/564A/L 1
- TABLE OF CONTENTS 5
- FIGURES 11
- PREFACE 13
- Electrical Installation 14
- Grounding 14
- Operating Environment 15
- (91/263/EEC) 16
- CE Mark 16
- Product Support 17
- Comtech EF Data Headquarters 17
- Warranty Policy 18
- Limitations of Warranty 18
- Exclusive Remedies 18
- Chapter 1. INTRODUCTION 19
- 1.1.1 CDD-56xA/L Features 20
- 1.2 Functional Description 20
- 1.3 Features 23
- 1.3.1 Physical Description 23
- 1.3.2 Major Assemblies 23
- 1.3.4 Dimensional Envelopes 24
- 1.3.5 Physical Features 27
- 1.3.5.1 Front Panel 27
- 1.3.5.2 Rear Panel 28
- 1.3.6 Data Interfaces 30
- 1.4.1 Demodulator 32
- 1.4.2 Data Rate Ranges 36
- Parameters Specifications 37
- 1.4.5 Network Protocols 38
- Chapter 2. INSTALLATION and 39
- STARTUP 39
- 2.3 Initial Configuration 43
- Chapter 3. REAR PANEL 45
- CONNECTOR PINOUTS 45
- 3.2.1 Rx IF Connections 47
- 3.2.1.1 CDD-562AL 47
- 3.2.3 Utility Connections 49
- INTERFACE 55
- DVB Encapsulator 64
- Chapter 5. UPDATING FIRMWARE 69
- F0020894–_V131 71
- Chapter 6. FAST ACTIVATION 79
- PROCEDURE 79
- Chapter 7. ETHERNET-BASED 83
- REMOTE PRODUCT 83
- MANAGEMENT 83
- 7.3.6 SNMP Traps 85
- 7.3.7 MIB-II 86
- 7.3.8 Private MIB 87
- 7.3.8.6.1 Unit Monitor 91
- 7.3.8.6.2 Rx Monitor 91
- 7.3.8.6.3 LNB Monitor 91
- 7.4 Telnet Interface 91
- Chapter 8. QUICK START GUIDE 93
- CDD-564A/L Demodulator 98
- BLANK PAGE 102
- Chapter 9. TELNET and CLI 103
- OPERATION 103
- 9.2 CLI Menu Screens 105
- 9.2.2 Main Menu 106
- 9.2.2.1.6 Working Mode 118
- 9.2.2.1.7 Telnet Timeout 119
- Management System (VMS) 130
- • Select one: 136
- 9.2.2.6.2 Monitor screen 137
- 9.2.2.6.4 Features screen 141
- 9.2.2.6.5 Utilities screen 142
- 9.2.2.7.2 Statistics Menu 147
- 9.2.2.7.3 Event Log screen 161
- 10.1 Introduction 167
- 10.1.2 Navigation 168
- 10.1.3 Page Sections 168
- 10.1.4 Action Buttons 168
- 10.1.5 Drop-down menus 169
- 10.1.6 Text Boxes 169
- 10.2.1 Select a Demodulator 171
- 10.3 Home pages 171
- 10.3.1 Home 171
- 10.3.2 Home 172
- 10.4.1 Admin 173
- Host Access List 174
- 10.4.2 Admin 175
- 10.4.3 Admin 176
- 10.4.4 Admin 177
- Features – Optional 178
- R x Header Decompression 178
- 10.4.5 Admin 180
- 10.4.6 Admin 181
- 10.4.7 Admin 182
- 10.4.8 Admin 183
- 10.5 Configuration pages 184
- Alarm Mask 186
- 10.5.2 Configuration 187
- Port Configuration 188
- VL A N B router 188
- 10.5.3 Configuration 189
- AR P Table (E dit) 190
- Add S tatic AR P 190
- Delete S tatic AR P 190
- Flush Dynamic AR P 190
- R oute Table (E dit) 191
- Add New R oute 192
- Delete R oute 193
- CDD-56xAL as S erver 194
- IGMP Table 194
- Decryption 195
- R eceive K eys 195
- R eceive HDLC Address es 196
- Delete HDLC Address 197
- Utilities 198
- LNB Control 200
- 10.6 Status pages 201
- 10.6.4 Status 203
- 10.6.9 Status 207
- Appendix A. Forward Error 209
- Correction (FEC) Options 209
- A.3 VersaFEC 211
- (Short-block LDPC) 211
- A.3.1 VersaFEC Extensions 213
- A.3.1.1 Extended CCM Codes 213
- Comtech Turbo Product Codec 216
- Rate 5/16 BPSK 216
- Rate 21/44 BPSK/QPSK 217
- Rate 3/4 QPSK 218
- 8-PSK/8-QAM and 16-QAM 218
- Rate 7/8 QPSK 219
- Rate 0.95 QPSK 220
- Comtech VersaFEC® Codec 221
- Rate 0.488 BPSK 221
- Rate 0.533, 0.631, 0.706 222
- Rate 0.642, 0.711, 0.780 223
- Rate 0.731, 0.780, 0.829 224
- Comtech VersaFEC® 225
- Codec - Extended CCM 225
- 0.576 8-QAM and 225
- 0.644 16-QAM 225
- BPSK/QPSK 226
- 0.654 and 0.734 QPSK 226
- Comtech Ultra-Low-Latency 226
- (ULL) Codec - Rate 0.493 226
- Differential 227
- Encoding 227
- No FEC, no 227
- Blank Page 228
- Appendix B. E 229
- MEASUREMENT 229
- (Co+No/No )/10) 230
- Appendix C. CDD-564A/L 233
- Dedicated Management Port 233
- C.2 Description 234
- C.3 Configuration 234
- Vipersat) 236
- See Figure C-5: 237
- 480 • 333 • 2200 PHONE 240
- • 333 • 2161 FAX 240
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