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Introduction Revision 2
CDM-760 Advanced High-Speed Trunking Modem MN-CDM760
1–15
1.3.7 Adaptive Coding and Modulation (ACM)
ACM Operational Mode Functional in DVB-S2 or DVB-S2-EB1/EB2 network specification modes
Symbol Rate Range 1 to 150 Msps
Interface
10/100/100BaseT Ethernet, with auto-sensing 10/100/1000 and auto-crossover detection or optional
Optical Gigabit Ethernet interface
Remote Es/No reporting Automatically reported from remote modem
Max span of data rate 0.1 to 314 Mbps (entire range of modem capability)
Switch point
(decreasing Es/No)
Corresponds to Es/No (plus impairments) at QEF (~PER = 10
-7
)
Max fading rate Configurable Target Es/No margin from 0.0 to 4.5 dB
Max ModCod update rate
Updates to the MODCOD can happen up to 4 times per second (no restriction on distance between
MODCODs)
Configurable parameters
Minimum and Maximum ModCod
Remote Demodulator Unlock options:
• Maintain current ModCod
•
Go to minimum ModCod
Es/No Target Margin: 0.0 to 4.5 dB0 in 0.1 dB steps
Modulation Type Impairment selection:
• Impairment for QPSK, 8PSK, 16APSK, 32APSK, and 64APSK: 0 to 9.9 dB in 0.1 dB steps
•
Impairment for QPSK ≤ 8PSK ≤ 16APSK ≤ 32APSK≤ 64APSK
Monitored parameters
Tx and Rx ModCods
Local and Remote Es/No: (-3.0 dB to +22.0dB, 0.1dB resolution)
Configuration and monitor menus displaying data rate, modulation and code rate update dynamically
with ModCod
1.3.8 DoubleTalk
®
Carrier-in-Carrier
®
(CnC)
Operating Mode
Requires the two carriers in a duplex circuit to share a common frequency. Different symbol rates are
allowed.
Symbol Rate Range
0.1Msps to 63 Msps
CnC Ratio
Ratio of Interferer Carrier Power to Desired Carrier Power (in dB). Positive values represent a stronger
Interferer Carrier, and negative values represent a stronger Desired Carrier. Range is +7 dB to -7 dB.
Symbol Rate Ratio
3:1 Tx/Rx or Rx/Tx
Inbound/Outbound frequency
uncertainty
±100kHz
Delay range
0 - 300 ms (230 - 290 ms factory default)
Es/No Degradation (dB)
measured at 0.0 dB CnC Ratio
QPSK, 0.3 dB
8-PSK, 0.3 dB
16-APSK, 0.4 dB
32-APSK, 0.6 dB
Monitor Functions
Delay, in milliseconds
Frequency offset (between outbound interferer and desired inbound): 100 Hz resolution
CnC ratio, in dB (ratio of absolute power, outbound interferer to desired inbound)
CnC Monitor Accuracy ± 1.0 dB for symmetric symbol rate
- CDM-760 1
- Errata A for MN-CDM760 Rev 2 5
- TABLE OF CONTENTS 7
- FIGURES 17
- PREFACE 21
- Safety and Compliance 22
- Electrical Installation 22
- Operating Environment 22
- (2004/108/EC) 23
- Preface Revision 2 24
- Chapter 1. INTRODUCTION 27
- Introduction Revision 2 28
- 1.2 Features 29
- 1.2.1 Physical Description 29
- 1.2.1.1 Standard Assemblies 29
- 1.2.1.2 Optional Assemblies 29
- 1.2.2 Dimensional Envelope 30
- 1.2.3 Physical Features 31
- 1.2.3.2 Rear Panel Features 32
- 1.2.4 Verification 34
- 1.3 CDM-760 Specifications 36
- 1.3.1 System Specifications 36
- 1.3.3 Base Unit Connectors 37
- 1.3.4 Test Functions 37
- 1.3.5 Modulator (Dual IF) 37
- 1.3.6 Demodulator (Dual IF) 38
- 1.3.6.1 Es/No Performance 39
- 1.3.8 DoubleTalk 41
- Carrier-in-Carrier 41
- 1.3.9 Regulatory Compliance 42
- Chapter 2. INSTALLATION 43
- Installation Revision 2 44
- Chapter 3. REAR PANEL 49
- CONNECTIONS 49
- 3.1.1.1 Type ‘BNC’ 50
- 3.1.1.2 Type ‘TNC’ 50
- 3.1.1.3 Type ‘N’ 50
- 3.1.1.4 Type ‘F’ 50
- 3.2.1 IF Connector Group 53
- 3.2.1.1 Rx Connectors 53
- 3.2.1.2 Tx Connectors 53
- Chapter 4. UPDATING FIRMWARE 67
- 4.4.1 Prerequisites 75
- Procedure 76
- 4.6 Reboot the Modem 80
- Chapter 5. FAST ACTIVATION 81
- PROCEDURE 81
- 5.2 About FAST Options 82
- Chapter 6. FRONT PANEL 87
- OPERATION 87
- 6.1.1 LED Indicators 88
- 6.1.2 Keypad 89
- 6.1.3.1 Opening Screen 90
- 6.1.3.2 Screen Saver 90
- 6.1.3.3 Cursor Behavior 90
- 6.2.1 SELECT: (Main) Menu 92
- 6.2.2 SELECT: Configuration 92
- 6.2.2.1 (CONFIG:) NetSpec 93
- 6.2.2.2 (CONFIG:) Tx 94
- 6.2.2.2.1 (CONFIG: Tx) Mod 94
- 6.2.2.2.2 (CONFIG: Tx) Data 95
- AND MODULATION (ACM) OPTION 104
- WAN Buffer Length:200 mSec 107
- () 107
- 6.2.2.3 (CONFIG:) Rx 108
- 6.2.2.3.1 (CONFIG: Rx) Mod 108
- (CONFIG: Rx) Freq Freq 110
- 6.2.2.3.4 (CONFIG: Rx) EsNo 111
- 6.2.2.5 CONFIG: CnC 124
- 6.2.2.6 CONFIG: Comp 125
- 6.2.2.7 CONFIG: Remote 126
- 6.2.2.8 CONFIG: IP 128
- 6.2.2.8.2 (CONFIG: IP) SNMP 129
- 6.2.2.9 (CONFIG:) Mask 131
- 6.2.2.10 (CONFIG:) Ref 132
- 6.2.3 SELECT: Monitor 133
- Baseband Framing: () 139
- 6.2.3.7 (Monitor:) Buffer 142
- Handover:00 143
- 6.2.4 SELECT: Test 144
- 6.2.4.1 (TEST:) Mode 144
- 6.2.4.2 (TEST:) BERT 146
- 6.2.4.3 (TEST:) Comp 146
- 6.2.5.1 Store/Load Override 147
- 6.2.6 SELECT: Utility 148
- 6.2.6.1 (Utility:) Set-RTC 148
- 6.2.6.3 (Utility:) CID 148
- 6.2.6.4 (Utility:) LED 148
- 6.2.6.5 (Utility:) 1:1 149
- 6.2.6.6 (Utility:) 1:N 150
- 6.2.6.8 (Utility:) Firmware 151
- 6.2.8 SELECT: FAST 153
- 6.2.8.1 (FAST:) Options 154
- 6.2.8.2 (FAST:) Demo-Mode 155
- 6.2.8.3 (FAST:) CnC 156
- Chapter 7. ETHERNET-BASED 159
- REMOTE PRODUCT 159
- MANAGEMENT 159
- 7.2 SNMP Interface 160
- 7.2.3 SNMP Traps 162
- 7.3 Telnet Interface 163
- 7.4.1 User Login 165
- 7.4.2.1 Navigation 166
- 7.4.2.2 Page Sections 166
- 7.4.2.3 Action Buttons 166
- 7.4.2.4 Drop-down Lists 167
- 7.4.2.5 Text or Data Entry 167
- 7.4.4.1 Home Pages 170
- 7.4.4.1.1 Home 170
- 7.4.4.1.2 Home 171
- 7.4.4.2.1 Admin 172
- Host Access List 173
- 7.4.4.2.2 Admin 174
- 7.4.4.2.3 Admin 175
- 7.4.4.2.4 Admin 176
- 7.4.4.3 Configuration Pages 177
- GBEI Common 180
- Tx Data Rates (read-only) 180
- Interfaces (read-only) 180
- Network Configuration 180
- Port Configuration 181
- G.703 Configuration 183
- OC3 Configuration 183
- Alarm Settings 183
- ARP Table (Edit) 185
- Add Static ARP 186
- Delete Static ARP 186
- Flush Dynamic ARPs 186
- Add New Route 188
- Route Table (Edit) 188
- Delete Route 188
- DHCP Relay 189
- DNS Caching 190
- DNS Cache Flush 190
- SAR Feature 191
- Add New QoS Rule 193
- QoS Rules Table (read-only) 194
- Delete Rule 195
- Differentiated Services 196
- Click [Submit] to save 197
- Compression Availability 198
- Refresh Rates 198
- BERT Config 203
- BERT Monitor 203
- LNB Control 204
- Meta-Carrier Info 205
- 7.4.4.4 Status Pages 207
- 7.4.4.4.1 Status 207
- Event Logging 209
- Clear Event Log 209
- 7.4.4.4.3 Status 210
- 7.4.4.4.4 Status 211
- 7.4.4.4.5 Status 212
- Ethernet Statistics 215
- Error Details 215
- MAC Table 216
- Total Flows 217
- Summary 217
- Clear Statistics 217
- Router Counters 218
- Router Errors 219
- Management Counters 219
- Managed Switch Counters 220
- WAN Counters 221
- Compression) 222
- Clear QoS Counters 224
- QoS Statistics 224
- Clear All Counters 225
- 8.2 EIA-485 236
- 8.3 EIA-232 236
- 8.4.1 Basic Protocol 237
- 8.4.2 Packet Structure 237
- 8.4.2.1 Start of Packet 238
- 8.4.2.2 Target Address 238
- 8.4.2.3 Address Delimiter 238
- 8.4.2.4 Instruction Code 239
- 8.4.2.7 End of Packet 241
- 8.5.1 Table Indexes 242
- Sect. 8.5.10 ODU Parameters 244
- Sect. 8.5.13 Carrier ID 244
- 8.5.2 Tx Parameters 245
- 8.5.3 Rx Parameters 248
- 8.5.4 IP Packet Parameters 251
- 8.5.5 Unit Parameters 253
- 8.5.6 ACM Parameters 260
- 8.5.7 AUPC Parameters 261
- 8.5.10 ODU Parameters 267
- 8.5.11 Modem Information 268
- 8.5.13 Redundancy Control 276
- 8.5.14 Carrier ID 277
- Appendix A. OBSOLETE 279
- FIRMWARE FTP UPDATE 279
- PROCEDURES 279
- A.2.1 Prerequisites 280
- Appendix A Revision 2 281
- Programming ModemApp 282
- XXX% Complete 282
- Loading FPGA XX of XX 282
- XXX% Complete 282
- A.2.4 Reboot the Modem 284
- A.3.1 Prerequisites 285
- ( ) 289
- Appendix B. Es/No 293
- MEASUREMENT 293
- ((Co + No)/ 10) 294
- Appendix C. OPTIONAL PIIC 297
- (PLUG-IN INTERFACE CARD) 297
- MODULES 297
- Appendix C Revision 2 298
- C.2 Optional PIIC Modules 299
- Appendix D. ETHERNET 305
- NETWORK CONFIGURATION 305
- Appendix D Revision 2 306
- D.4.1 Ethernet Interfaces 307
- D.4.2 Ethernet Overhead 309
- Appendix E. ETHERNET 311
- STATISTICS AND STATUS 311
- REPORTING 311
- Appendix E Revision 2 312
- E.3 Statistics Items 313
- E.3.3 Status Items 314
- E.3.4 BER Testing 314
- E.3.5 ACM Modulator Status 314
- E.3.7 CnC Status 314
- Appendix F. OPTIONAL HIGH 315
- PACKET PROCESSOR 315
- Appendix F Revision 2 316
- Do these steps: 317
- Pages (FW Ver. 1.4.1) 328
- F.3.1 Modes of Operation 329
- OF SERVICE (QoS) 332
- F.3.3 Header Compression 333
- F.3.4 FAST Options 333
- Appendix G. ADAPTIVE CODING 335
- MODULATION (ACM) OPTION 335
- G.2 Background 336
- Downlink Fade Margin Required 338
- Appendix G Revision 2 339
- G.3 ACM System Description 340
- BLANK PAGE 342
- G.4 CDM-760 ACM Scheme 343
- G.4.1 Target Es/No Margin 343
- 1dB/second * 870 ms = 344
- G.4.3 Pilots 345
- G.4.4 Long and Short Frames 345
- G.4.6 ModCod Selection 346
- Commands/Queries 364
- Appendix H. CARRIER ID (DVB 367
- METACARRIER®) 367
- Appendix H Revision 2 369
- -CARRIER (CNC) OPTION 379
- Appendix J Revision 2 380
- J.3 Operational Details 382
- J.4.2 Margin Requirements 386
- J.4.6.2 Power Limited Links 390
- J.5 Operational References 393
- Spectrum Analyzer 395
- J.8 Glossary 397
- Appendix K. QUALITY OF 401
- SERVICE (QOS) 401
- K.3.1 Classification 402
- K.3.2 Prioritization 403
- K.3.3 Drain 403
- K.3.3.1 Max/Priority Mode 403
- K.3.3.2 Min/Max Mode 404
- K.3.3.3 DiffServ Mode 405
- K.4 Weighting 405
- K.4.1 Overview 405
- K.4.2 Weights 405
- K.4.2.1 Order of Scheduling 405
- K.4.2.2 Weighted Scheduling 406
- K.4.2.3.1 Example 1 407
- Appendix K Revision 2 408
- K.4.2.3.2 Example 2 409
- K.4.2.3.3 Example 3 411
- K.4.2.3.4 Example 4 413
- 480 • 333 • 2200 PHONE 416
- • 333 • 2161 FAX 416
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