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DM240XR High-Speed Digital Modulator Theory of Operation
MN-DM240XR– Revision 13 3–2
Figure 3-1. Functional Block Diagram
3.3 DVB-S2-BS-NBC Operation
The DVB-S2-BS-NBC version of the DM240XR complies with the ETSI EN 302 307 V1.1.1
(2004-01) specification for non-backward compatible broadcast services.
A block diagram of the signal flow is shown in Figure 3-2 below.
Terrestrial
Interface
PRBS
Generator
Terrestrial
Buffer
CRC-8
Encoder
Slicer
BCH
Encoder
LDPC
Encoder
Bit
Interleaver
BB
Filter
PL
Framing
DVB
Sync
PLL
IQ
Modulator
Tx Clock
Symbol Clock
Stream
Adaptation
Mapping IF Out
Tx Data
SCT
SCTE
DDS
Figure 3-2. Functional Block Diagram
- DM240XR 1
- Table of Contents 5
- Blank Page 10
- PREFACE 11
- Safety Compliance 12
- EN 60950 12
- Low Voltage Directive (LVD) 12
- Warranty Policy 13
- Customer Support 14
- Chapter 1. INTRODUCTION 15
- MN-DM240XR– Revision 13 1–2 16
- Chapter 2. Installation 17
- Unpacking 18
- 2.3 Removal and Assembly 18
- 2.4 Mounting Considerations 18
- Modulator Checkout 19
- Initial Power-Up 19
- MN-DM240XR– Revision 13 2–4 20
- 3.1 Theory of Operation 21
- 3.2 DVB-S Operation 21
- 3.3 DVB-S2-BS-NBC Operation 22
- Chapter 4. User Interfaces 23
- 4.2.3 Front Panel Keypad 24
- 4.2.4 Parameter Setup 25
- MN-DM240XR– Revision 13 4–4 26
- 4.3.1 Main Menus 27
- MN-DM240XR– Revision 13 4–6 28
- MN-DM240XR– Revision 13 4–7 29
- MN-DM240XR– Revision 13 4–8 30
- MN-DM240XR– Revision 13 4–9 31
- 4.4.2 Protocol Wrapper 53
- 4.4.1 Protocol Structure 53
- 4.4.5 Collision Avoidance 58
- 4.4.7 RLLP Summary 60
- 4.8.2 Terminal Screens 64
- Figure 4-6. Modulator Menu 65
- Figure 4-7. Event Log Menu 65
- 5.1 DM240XR Connections 71
- MN-DM240XR– Revision 13 5–2 72
- MN-DM240XR– Revision 13 5–3 73
- Normal Operation 73
- Firmware Update 73
- Custom Configuration 73
- 5.6 Remote Port (I/O) 74
- 5.7 Terminal Port (I/O) 74
- 5.8 Alarm Port 75
- MN-DM240XR– Revision 13 5–6 76
- 5.12.1 ASI PIIC 77
- 5.12.2 ASI Monitor 78
- MN-DM240XR– Revision 13 5–9 79
- 5.12.5 HSSI Interface 80
- 20 - 23 81
- Chapter 6. Maintenance and 83
- Troubleshooting 83
- MN-DM240XR– Revision 13 6–2 84
- 7.1 Introduction 85
- 7.2 IF Specification 85
- 7.3 Baseband Specification 86
- 7.3.1 DVB-S 86
- 7.5 Monitor and Control 88
- 7.6 Environmental 88
- 7.7 Physical 88
- 7.8 Options 89
- 7.10 Data Rates (DVB-S) 89
- MN-DM240XR– Revision 13 7–6 90
- 7.10.1 Data Rates (DVB-S2) 91
- MN-DM240XR– Revision 13 7–8 92
- MN-DM240XR– Revision 13 7–9 93
- Chapter 8. SNMP 95
- MN-DM240XR– Revision 13 8–2 96
- MN-DM240XR– Revision 13 8–3 97
- MN-DM240XR– Revision 13 8–4 98
- MN-DM240XR– Revision 13 8–5 99
- MN-DM240XR– Revision 13 8–6 100
- MN-DM240XR– Revision 13 8–7 101
- posfir(4) 102
- MN-DM240XR– Revision 13 8–9 103
- 9.2 Modulator Command Set 115
- MN-DM240XR– Revision 13 9–2 116
- MN-DM240XR– Revision 13 9–3 117
- MN-DM240XR– Revision 13 9–4 118
- MN-DM240XR– Revision 13 9–5 119
- MN-DM240XR– Revision 13 9–6 120
- MN-DM240XR– Revision 13 9–7 121
- MN-DM240XR– Revision 13 9–8 122
- MN-DM240XR– Revision 13 9–9 123
- Chapter 10. Web Browser 139
- 10.2 Configuring Your PC 140
- 10.2.1 LED Indicators 141
- 10.3 GUI Screen Menus 142
- 10.3.1 Introduction Menu 143
- 10.3.1.1 Login Screen 144
- 10.3.2 Password Setup 145
- Configuring Applications 150
- 10.3.4.1 Transmit Menu 152
- 10.3.4.2 Interface Menu 154
- 10.3.4.3 RFSWITCH Menu 155
- 10.3.4.4 Monitor Menu 155
- IMPORTANT 156
- 10.3.4.5 Alarms Menu 157
- 10.3.4.6 System Menu 158
- 10.3.4.7 Test Menu 160
- Procedure 161
- A.4 Demonstration Procedure 163
- MN-DM240XR– Revision 13 A–5 165
- MN-DM240XR– Revision 13 A–6 166
- B.1 Introduction 167
- B.4 Ethernet Test 169
- Network) 169
- MN-DM240XR– Revision 13 B–4 170
- MN-DM240XR– Revision 13 B–5 171
- MN-DM240XR– Revision 13 B–6 172
- MN-DM240XR– Revision 13 B–7 173
- MN-DM240XR– Revision 13 B–8 174
- Setup Guide 175
- C.2.1 Change Web User Name 177
- C.2.3 Change Access Rights 178
- C.3 Modem Web Site 178
- C.4 Web Page Appearance 179
- MN-DM240XR– Revision 13 C–6 180
- Operation Guide 181
- DM240 Tx 182
- Satellite Downlink 182
- MN-DM240XR– Revision 13 D–3 183
- D.4 AutoEQ 184
- Menu Options and Parameters 184
- MN-DM240XR– Revision 13 D–5 185
- MN-DM240XR– Revision 13 D–6 186
- D.5 AutoEQ 187
- MN-DM240XR– Revision 13 D–8 188
- MN-DM240XR– Revision 13 D–9 189
- D.9 Equalizer Calibration 191
- D.10 Equalizer Modes 192
- D.12 Additional Features 194
- D.12.2 LNB Power Connector 194
- METRIC CONVERSIONS 195
- Units of Length 195
- Temperature Conversions 195
- Units of Weight 195
- 480 • 333 • 2200 PHONE 196
- • 333 • 2161 FAX 196
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