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DMD1050TS
IMPORTANT NOTE: The information contained in this document supersedes all previously published
information regarding this product. Product specifications are subject to change without prior notice.
Satellite Modem Board
Installation and Operation Manual
Part No. MN-DMD1050TS
Revision 1
Page 2
DMD1050TS Satellite Modem Board
Copy
right © 2018 Comtech EF Data. All rights reserved. Printed in the USA.
Comtech EF Data, 2114 West 7th Street, Tempe, Arizona 85281 USA, 480.333.2200, FAX: 480.333.2161
Revision History
Revision 1
Rev
Date
Description
0 Jan 2017 Initial Release.
1 May 2018
Chapter 6: Revised tables 6-1 through 6-17.
Added Acronym List and Unit of Measurement in TOC section.
Note: Technical changes are shown with a revision bar in the margin next to the change.
Formatting changes do not have a revision bar.
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Table of Contents
PREFACE .......................................................................................................................... I
About this Manual .................................................................................................................................................. i
Conventions and References................................................................................................................................ i
Patents and Trademarks ...................................................................................................................................... i
Related Documents ............................................................................................................................................. ii
Military Standards................................................................................................................................................ ii
Warnings, Cautions, and Notes .......................................................................................................................... ii
Recommended Standard Designations ..............................................................................................................iii
Safety and Compliance ........................................................................................................................................ iii
Operating Environm ent .......................................................................................................................................iii
Product Support ................................................................................................................................................... iii
Comtech EF Data Headquarters ......................................................................................................................... iii
Warranty Polic y .................................................................................................................................................... iv
Limitations of Warranty ...................................................................................................................................... iv
Exclusive Remedies ............................................................................................................................................ v
CHAPTER 1. INTRODUCTION .......................................................................................... 1–1
1.1 Overview ................................................................................................................................................ 1–1
1.2 DMD1050TS Configurations ................................................................................................................. 1–2
1.2.1 Features/Options Installed at Time of Order ....................................................................................... 1–2
1.2.2 Feature Upgrades ............................................................................................................................... 1–2
1.3 Function Accessibility .......................................................................................................................... 1–2
CHAPTER 2. INSTALLATION ........................................................................................... 2–1
2.1 Unpacking and Inspection ................................................................................................................... 2–1
2.2 Installation Requirements .................................................................................................................... 2–2
2.3 Removal from Container and Assembly ............................................................................................. 2–2
2.4 Installation Considerations .................................................................................................................. 2–2
2.4.1 Tools Required .................................................................................................................................... 2–3
2.5 DMD1050TS Initial Configuration Check ............................................................................................ 2–4
2.5.1 Standard DMD1050TS Factory Configuration Settings ...................................................................... 2–4
2.6 Modulator Checkout ............................................................................................................................. 2–5
2.6.1 Initial Power-Up ................................................................................................................................... 2–5
2.6.2 M&C Web Browser Setup ................................................................................................................... 2–5
2.6.3 M&C Terminal Setup ........................................................................................................................... 2–6
2.7 Storage ................................................................................................................................................... 2–6
CHAPTER 3. THEORY OF OPERATION .......................................................................... 3–1
3.1 DMD1050TS Hardware .......................................................................................................................... 3–1
3.1.1 L-Band Printed Circuit Card ................................................................................................................ 3–2
3.1.2 Baseband Processing Printed Circuit Card ......................................................................................... 3–3
3.1.3 FIPs 140 Level 2 TRANSEC Security Module .................................................................................... 3–4
3.2 DMD1050TS Functional Block Diagram .............................................................................................. 3–6
3.2.1 Baseband Processing ......................................................................................................................... 3–6
3.2.2 Tx Baseband Processing .................................................................................................................... 3–6
3.2.3 Rx Baseband Processing .................................................................................................................... 3–7
3.2.4 FIPs Module Processing ..................................................................................................................... 3–8
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3.3 Monitor & Control (M&C) ...................................................................................................................... 3–9
3.3.1 Terminal Port/ES-ES Communications (J3) ........................................................................................ 3–9
3.3.2 Terminal Mode Control ........................................................................................................................ 3–9
3.3.3 Modem Terminal Mode Control........................................................................................................... 3–9
3.3.4 Modem Setup for Terminal Mode...................................................................................................... 3–10
3.3.5 Connect the Terminal ........................................................................................................................ 3–10
3.3.6 Terminal Screens .............................................................................................................................. 3–10
3.4 Modem Remote Communications (Radyne Link Level Protocol) .................................................. 3–11
3.4.1 RLLP Protocol Structure ................................................................................................................... 3–11
3.5 Modem Setup for Ethernet M&C (J11) .............................................................................................. 3–11
3.6 M&C Default/Reset Plug Settings (JP1 & JP2) ................................................................................. 3–11
3.7 Ethernet Data Interface – (J10) .......................................................................................................... 3–12
3.8 Internal Clock....................................................................................................................................... 3–17
3.9 Loopback Features (Terrestrial & IF) ................................................................................................ 3–17
3.10 DMD1050TS Clocking Options ........................................................................................................... 3–20
3.10.1 Tx Clock Options ............................................................................................................................... 3–20
3.10.2 Rx Buffer Clock Options .................................................................................................................... 3–21
3.11 Ethernet Data Interface ....................................................................................................................... 3–22
3.12 Reed-Solomon (R-S) Codec ............................................................................................................... 3–23
3.12.1 R-S Operation in the DMD1050TS ................................................................................................... 3–23
3.12.2 R-S Code Rate .................................................................................................................................. 3–23
3.12.3 Interleaving ........................................................................................................................................ 3–23
3.13 DMD1050TS Automatic Up lin k Power Control (AUPC) Operation ................................................. 3–25
3.13.1 Radyne AUPC ................................................................................................................................... 3–25
3.13.2 EF AUPC ........................................................................................................................................... 3–26
3.13.3 Near Side AUPC ............................................................................................................................... 3–26
3.14 Asynchronous Overhead Operation (J3) .......................................................................................... 3–29
3.15 Standard IBS ES-to-ES Mode ............................................................................................................. 3–31
3.16 Enhanced Asynchronous Mode (Proprie tary) .................................................................................. 3–31
3.17 Satellite Control Channel (SCC) – J3 ................................................................................................ 3–32
3.17.1 SCC Framing Structure ..................................................................................................................... 3–32
3.17.2 Aggregate Data Rate ........................................................................................................................ 3–33
3.17.3 Overhead Rate Comparison ............................................................................................................. 3–34
3.17.4 Actual Overhead Rate Calculation .................................................................................................... 3–34
3.17.5 SCC Overhead Channel Setup ......................................................................................................... 3–35
3.18 EBEM Framing Unit ............................................................................................................................. 3–37
3.18.1 EBEM Mode Set Up on the DMD1050TS ......................................................................................... 3–37
3.18.2 DMD1050TS Information Throughput Adpatation (ITA) ................................................................... 3–37
3.18.3 Embedded Channel .......................................................................................................................... 3–37
3.19 STANAG Turbo Coding ...................................................................................................................... 3–38
3.20 FIPS TRANSEC Module ...................................................................................................................... 3–39
3.20.1 Traffic Encryption and Decryption Keys and Key Generation ........................................................... 3–39
3.21 DMD1050TS ID Codes (Feature Upgrades) ....................................................................................... 3–43
3.22 Strap Codes ......................................................................................................................................... 3–43
CHAPTER 4. REAR PANEL INTERFACE......................................................................... 4–1
4.1 DMD1050TS Connections ..................................................................................................................... 4–1
4.2 Compact Flash (J6) ............................................................................................................................... 4–5
4.3 Power Input (J16) .................................................................................................................................. 4–5
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4.4 BUC & LNB Power Input (J3) ............................................................................................................... 4–5
4.5 Modem Connections (Standard) .......................................................................................................... 4–5
4.5.1 EXT REF (J9) ...................................................................................................................................... 4–5
4.5.2 TX L-Band IF (J1) ................................................................................................................................ 4–6
4.5.3 RX L-Band IF (J2) ............................................................................................................................... 4–6
4.5.4 ASYNC & Remote Port (J3) – 10-Pin Dual Row Header .................................................................... 4–6
4.5.5 Default/Shorting Plug (JP1 JP2) - 3 Pin Male Connec to r ................................................................... 4–6
4.5.6 MIL-188-114A (J4) .............................................................................................................................. 4–8
4.5.7 Ethernet M&C (J11) ............................................................................................................................ 4–8
4.5.8 Ethernet Data Interface (J10) .............................................................................................................. 4–8
4.5.9 DS-101 Simple Key Loader (J17) ....................................................................................................... 4–9
4.5.10 Antenna Handover (J18) ..................................................................................................................... 4–9
CHAPTER 5. MAINTENANCE AND TROUBLESHOOTING ............................................. 5–1
5.1 Periodic Maintenance ........................................................................................................................... 5–1
5.2 Troubleshooting .................................................................................................................................... 5–1
5.2.1 Alarm Faults ........................................................................................................................................ 5–2
5.2.2 Alarm Masks........................................................................................................................................ 5–4
CHAPTER 6. TECHNICAL SPECIFICATIONS .................................................................. 6–1
6.1 Data Rates Limits .................................................................................................................................. 6–1
6.1.1 Non-EBEM Modes .............................................................................................................................. 6–1
6.1.2 EBEM Modes ...................................................................................................................................... 6–2
6.1.3 Non-DVB Modes ................................................................................................................................. 6–2
6.1.4 DVB Modes ......................................................................................................................................... 6–4
6.2 Modulator ............................................................................................................................................... 6–6
6.3 Demodulator .......................................................................................................................................... 6–7
6.4 Plesiochronous Buffer .......................................................................................................................... 6–8
6.5 Monitor and Control .............................................................................................................................. 6–8
6.6 Terrestrial Interfaces ............................................................................................................................. 6–8
6.7 Environmental ....................................................................................................................................... 6–8
6.8 Physical .................................................................................................................................................. 6–8
6.9 BER Specifications ............................................................................................................................... 6–9
6.9.1 BER Performance (Viterbi) .................................................................................................................. 6–9
6.9.2 BER Performance (Sequential) ......................................................................................................... 6–10
6.9.3 BER Performance (Viterbi - w/Reed-Solomon) ................................................................................. 6–11
6.9.4 BER Performance (8PSK Trellis) ...................................................................................................... 6–12
6.9.5 BER Performance (16QAM Viterbi) .................................................................................................. 6–13
6.9.6 BER Performance (16QAM Viterbi w/Reed-Solomon) ..................................................................... 6–14
6.9.7 BER Performance ((O)QPSK Turbo) ................................................................................................ 6–15
6.9.8 BER Performance (BPSK Turbo) ...................................................................................................... 6–16
6.9.9 BER Performance (8PSK Turbo) ...................................................................................................... 6–17
6.9.10 BER Performance (16QAM Turbo) ................................................................................................... 6–18
6.9.11 B/O/QPSK BER Performance (LDPC) .............................................................................................. 6–19
6.9.12 8PSK/8QAM BER Performance (LDPC) ........................................................................................... 6–20
6.9.13 16QAM BER Performance (LDPC) ................................................................................................... 6–21
6.9.14 BER Performance B/O/QPSK (MILSTD 188-165B or STANAG) Turbo ........................................... 6–22
6.9.15 BER Performance 8-PSK (MILSTD 188-165B or STANAG) Turbo .................................................. 6–23
6.9.16 BER Performance 16APSK (MILSTD 188-165B or STANAG) Turbo............................................... 6–24
6.10 ACG Output Voltage ........................................................................................................................... 6–30
6.11 DMD Input Level Specification........................................................................................................... 6–31
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CHAPTER 7. WEB BROWSER ......................................................................................... 7–1
7.1 Web Browser User Interface ................................................................................................................ 7–1
7.2 Configuring Your PC ............................................................................................................................. 7–1
7.3 Graphical User Interface ....................................................................................................................... 7–1
7.3.1 Screen Areas....................................................................................................................................... 7–2
7.3.2 Navigation ........................................................................................................................................... 7–2
7.3.3 Light Emitting Diode (LED) Indicators ................................................................................................. 7–2
7.4 Introduction Page .................................................................................................................................. 7–4
7.4.1 Login Screen ....................................................................................................................................... 7–5
7.5 Password Setup .................................................................................................................................... 7–6
7.5.1 Password Setup | Access Page .......................................................................................................... 7–6
7.5.2 Password Setup | Preferences Page .................................................................................................. 7–7
7.6 IP Administration .................................................................................................................................. 7–8
7.6.1 IP Administration | Modem Addressing Page ..................................................................................... 7–8
7.6.2 IP Administration | Configure Apps Page .......................................................................................... 7–10
7.6.3 IP Administration | Configure PC Page ............................................................................................. 7–14
7.7 Monitor and Control Menu ................................................................................................................. 7–15
7.7.1 Transmit Menu .................................................................................................................................. 7–15
7.7.2 Receive Menu ................................................................................................................................... 7–30
7.7.3 Interface Menu .................................................................................................................................. 7–42
7.7.4 Monitor Menu .................................................................................................................................... 7–47
7.7.5 System Menu .................................................................................................................................... 7–64
7.7.6 Test Menu ......................................................................................................................................... 7–69
7.8 TRANSEC Module HTTP Interface ..................................................................................................... 7–73
CHAPTER 8. TRANSEC MODULE HTTPS INTERFACE ................................................. 8–1
8.1 TRANSEC Module Overview ................................................................................................................ 8–1
8.2 TRANSEC Module HTTPS Interface .................................................................................................... 8–1
8.3 Open the TRANSEC Module HTTPS Interface .................................................................................... 8–1
8.3.1 Interface Instructions for Older Browsers ............................................................................................ 8–3
8.3.2 HTTPS Interface Menu Tree ............................................................................................................... 8–3
8.4 TRANSEC Module HTTPS Interface Page Descriptions .................................................................... 8–4
8.4.1 Configure ............................................................................................................................................. 8–4
8.4.2 Monitor .............................................................................................................................................. 8–10
8.4.3 Log .................................................................................................................................................... 8–12
8.4.4 Firmware ........................................................................................................................................... 8–14
8.4.5 Upload ............................................................................................................................................... 8–15
8.5 TRANSEC Module Update Procedure ............................................................................................... 8–16
CHAPTER 9. TRANSEC MODULE SSH CLI OPERATION .............................................. 9–1
9.1 Overview ................................................................................................................................................ 9–1
9.1.1 SSH User Access ................................................................................................................................ 9–1
9.2 Command Line Interface (CLI) ............................................................................................................. 9–3
9.2.1 CLI Menu System – Parallel Functionality .......................................................................................... 9–3
9.2.2 CLI Menu – Common Information, Navigation, Operation Features................................................... 9–3
9.2.3 Main Menu ........................................................................................................................................... 9–4
9.2.4 Configuration Menu [C] ....................................................................................................................... 9–5
9.2.5 Module Status screen [M] ................................................................................................................. 9–13
9.2.6 Event Log Menu [E] ........................................................................................................................... 9–14
9.2.7 Unit Info Menu [ I ] ............................................................................................................................. 9–15
9.2.8 Comtech EF Data Information screen [Z] ......................................................................................... 9–16
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APPENDIX A. PRODUCT OPTIONS .................................................................................. A–1
A.1 Hardware Options ................................................................................................................................ A–1
A.2 Customized Options ............................................................................................................................ A–1
APPENDIX B. CARRIER CONTROL .................................................................................. B–1
B.1 States ..................................................................................................................................................... B–1
B.2 Carrier Off ............................................................................................................................................. B–1
B.3 Carrier On .............................................................................................................................................. B–1
B.4 Carrier Auto .......................................................................................................................................... B–1
B.5 Carrier VSat........................................................................................................................................... B–1
B.6 Carrier Request to Send (RTS) ........................................................................................................... B–2
APPENDIX C. TCP/IP ETHERNET SETUP ........................................................................ C–1
C.1 Introduction .......................................................................................................................................... C–1
C.2 TCP/IP Network Configuration ............................................................................................................ C–1
C.2.1 Boot Mode Submenu ......................................................................................................................... C–1
C.2.2 Boot Server Tag Submenu ................................................................................................................. C–2
C.2.3 Modem Host Submenu ...................................................................................................................... C–2
C.2.4 IP Address Mask Submenu ................................................................................................................ C–2
C.2.5 Modem IP Address Submenu ............................................................................................................ C–3
C.2.6 Server IP Address Submenu .............................................................................................................. C–3
C.2.7 Router IP Address Submenu ............................................................................................................. C–3
C.2.8 Modem Ethernet Address Submenu .................................................................................................. C–3
C.2.9 Ethernet Rate Submenu ..................................................................................................................... C–3
C.3 Network Configuration Summary ....................................................................................................... C–4
C.4 Ethernet Test ........................................................................................................................................ C–5
C.4.1 Connect the Modem Ethernet Cable to a Network Link ..................................................................... C–5
C.4.2 Connect the Modem Ethernet Cable Directly to a Computer (without a Network) ............................ C–5
C.5 Test the Ethernet Connection using the P ing Command (Optional) .............................................. C–8
APPENDIX D. W EB BROWSER SETUP GUIDE ............................................................... D–1
D.1 Introduction .......................................................................................................................................... D–1
D.2 Required Items ..................................................................................................................................... D–1
D.3 Web Interface Setup Guidelines ......................................................................................................... D–1
D.3.1 Prepare the DMD1050TS for Web Setup .......................................................................................... D–1
D.4 IP Network Change from the Initial Web Setup ................................................................................. D–5
D.4.1 Configure the modem ......................................................................................................................... D–5
D.4.2 Configure the Computer ..................................................................................................................... D–6
D.5 Web Users Setup and Configuration Control Options ..................................................................... D–7
D.5.1 Change the Password ........................................................................................................................ D–8
D.5.2 Boot Mode Options (Reference only) ................................................................................................. D–9
APPENDIX E. USER INTERFACE CONNECTIONS .......................................................... E–1
E.1 User Interface Connections .................................................................................................................E–1
E.2 Connector Kit part numbers ................................................................................................................E–1
E.2.1 J3 & J4 Interface Connectors located on PCB ....................................................................................E–1
E.2.2 J3 & J4 Information on Supplied Interface Connectors ......................................................................E–1
E.2.3 J3 & J16 Information on Supplied Interface Connectors for DC & BUC Power ..................................E–2
E.3 Part Number Active08-56-0106 ............................................................................................................E–2
E.3.1 Part Details ..........................................................................................................................................E–2
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APPENDIX F. ETHERNET D AT A INTERFACE .................................................................. F–1
F.1 Introduction ........................................................................................................................................... F–1
F.2 Point-to-Point Applications .................................................................................................................. F–1
F.3 Transparent Operation ......................................................................................................................... F–2
F.4 Point-to-Multipoint Applications .......................................................................................................... F–3
F.5 High Speed Mesh Applications............................................................................................................ F–4
F.6 Low Speed Mesh Applications ............................................................................................................ F–5
F.7 Remote Monitor and Control via SNMP .............................................................................................. F–6
F.8 Enhanced Quality of Service (QoS) ..................................................................................................... F–7
F.8.1 Normal QoS ......................................................................................................................................... F–7
F.8.2 Port Based QoS .................................................................................................................................. F–7
F.8.3 Fair Weighted Queuing ....................................................................................................................... F–8
F.8.4 Strict Priority Queuing ......................................................................................................................... F–8
F.8.5 Satellite Packet Error Checking .......................................................................................................... F–8
F.8.6 Automatic Learni ng and Ag ing ............................................................................................................ F–8
F.8.7 Internal Buffer and Throttle ................................................................................................................. F–9
F.8.8 Any Data Rate, Modulation Type, FEC or Application ........................................................................ F–9
APPENDIX G. STRAP CODES ........................................................................................G–1
G.1 Introduction .......................................................................................................................................... G–1
APPENDIX H. SOFTWARE UPGRADE PROCEDURE ...................................................... H–1
H.1 Software Upgrade Procedure.............................................................................................................. H–1
H.2 Terminal Software Upgrade ................................................................................................................ H–1
H.3 Required Equipment ............................................................................................................................ H–1
H.4 Upgrade Procedure .............................................................................................................................. H–1
H.4.1 Find the available features ................................................................................................................. H–1
H.4.2 Find the Unit ID .................................................................................................................................. H–1
H.4.3 Purchase the Upgrades ..................................................................................................................... H–1
H.4.4 Enter the Upgrade Code .................................................................................................................... H–2
H.5 Demonstration Procedure ................................................................................................................... H–3
H.5.1 Find the Available Features ............................................................................................................... H–3
H.5.2 Find the Unit ID .................................................................................................................................. H–3
H.5.3 Request a Demonstration .................................................................................................................. H–3
H.5.4 Enter the Demonstration Code ........................................................................................................... H–3
H.6 Cancel Demonstration Mode ............................................................................................................... H–4
H.6.1 Cancel a Demonstration Mode........................................................................................................... H–4
H.7 Web Browser Software Upgrade ........................................................................................................ H–4
H.8 Monitor and Control ............................................................................................................................. H–4
APPENDIX I. INFORMATION THROUGHPUT ADAPTATION (ITA) OPERATION ........... I–1
I.1 Information Throughput Adaptation (ITA) Operation ......................................................................... I–1
I.1.1 Properties of ITA on the DMD1050TS ................................................................................................. I–1
I.1.2 Basic Setup (Example) ......................................................................................................................... I–2
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List of Figures
Figure 1-1. DMD1050TS Satel lite Board Modem (Top View) ............................................................................. 1–1
Figure 2-1. Heat Path .......................................................................................................................................... 2–3
Figure 3-1. DMD1050TS Block Diagram ............................................................................................................ 3–1
Figure 3-2. L-Band Assembly.............................................................................................................................. 3–2
Figure 3-3. DMD1050TS Baseband Processing Card Block Diagram ............................................................... 3–3
Figure 3-4. DMD1050TS FIPS 140 Level 2 TRANSEC Processing Module Block Diagram ............................. 3–5
Figure 3-5. DMD1050TS Universal Satellite Modem Functional Block Diagram ................................................ 3–7
Figure 3-6. Point-to-Multipoint with Daisy Chaining .......................................................................................... 3–15
Figure 3-7. Loopback Functional Block Diagram .............................................................................................. 3–18
Figure 3-8. Loopback Functional Block Diagram .............................................................................................. 3–19
Figure 3-9. Loopback Functional Block Diagram .............................................................................................. 3–19
Figure 3-10. Clocking and Polarity Diagram ..................................................................................................... 3–20
Figure 3-11. R-S Encoder Functional Block Diagram ....................................................................................... 3–23
Figure 3-12. R-S Decoder Functional Block Diagram ....................................................................................... 3–23
Figure 3-13. Traffic Encryption Key Negotiation ............................................................................................... 3–40
Figure 3-14. Traffic Decryption Key Negotiation ............................................................................................... 3–41
Figure 4-1. DMD1050TS Front View ................................................................................................................... 4–2
Figure 4-2. DMD1050TS Rear View ................................................................................................................... 4–2
Figure 4-3. RF Board (PL-0021834) ................................................................................................................... 4–3
Figure 4-4. Baseband Modem Board (PL-0022534) ........................................................................................... 4–4
Figure 4-5. Default/Shorting Plug (JP1 and JP2) ................................................................................................ 4–7
Figure 6-1. B/0/QPSK BER Performance (Viterbi).............................................................................................. 6–9
Figure 6-2. B/0/QPSK BER Performance (Sequential) ..................................................................................... 6–10
Figure 6-3. B/O/QPSK BER Performance (Viterbi – w/RS) .............................................................................. 6–11
Figure 6-4. 8PSK BER Performance (Trellis) ................................................................................................... 6–12
Figure 6-5. 16QAM BER Performance (Viterbi) ................................................................................................ 6–13
Figure 6-6. 16QAM BER Performance (Viterbi w/RS) ...................................................................................... 6–14
Figure 6-7. (O)QPSK BER Performance (Turbo).............................................................................................. 6–15
Figure 6-8. BPSK BER Performance (Turbo) ................................................................................................... 6–16
Figure 6-9. 8PSK BER Performance (Turbo).................................................................................................... 6–17
Figure 6-10. 16QAM BER Performance (Turbo)............................................................................................... 6–18
Figure 6-11. B/O/QPSK BER Performance (LDPC) ......................................................................................... 6–19
Figure 6-12. 8PSK/8QAM BER Performance (LDPC) ...................................................................................... 6–20
Figure 6-13. 16QAM BER Performance (LDPC) .............................................................................................. 6–21
Figure 6-14. BER Performance B/O/QPSK (MILSTD 188-165B or STANAG) Turbo ...................................... 6–22
Figure 6-15. BER Performanc e 8-PSK (MILSTD 188-165B or STANAG) Turbo ............................................. 6–23
Figure 6-16. BER Performance 16APSK (MILSTD 188-165B or STANAG) .................................................... 6–24
Figure 6-17. AGC Voltage Monitor .................................................................................................................... 6–30
Figure 6-18. DMD1050TS Input Level Specification ......................................................................................... 6–31
Figure 7-1. Web User Interface Example ............................................................................................................ 7–1
Figure 7-2. Navigation Tabs Example ................................................................................................................. 7–2
Figure 7-3. Navigation Tabs Submenus Example .............................................................................................. 7–2
Figure 7-4. LED Example .................................................................................................................................... 7–2
Figure 7-5. Introduction Page Example .............................................................................................................. 7–4
Figure 7-6. Login Screen Example ..................................................................................................................... 7–5
Figure 7-7. Password Setup | Access Page Example ........................................................................................ 7–6
Figure 7-8. Password Setu p | Preferences Page Example ................................................................................ 7–7
Figure 7-9. IP Administratio n | Modem Address ing Pa g e Exam ple .................................................................... 7–8
Figure 7-10. IP Administrati on | Conf igure Apps Pa ge Ex ample ...................................................................... 7–10
Figure 7-11. IP Administrati on | Conf igure PC Pag e Example ......................................................................... 7–14
Figure 7-12. Transmit | General | IF Page Example ......................................................................................... 7–15
Figure 7-13. Transmit | Data Page Example ..................................................................................................... 7–18
Figure 7-14. Transmit | Reed-Solomon Page Example .................................................................................... 7–22
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Figure 7-15. Transmit | ODU-BUC Page Example ........................................................................................... 7–23
Figure 7-16. Transmit | AUPC Page Example .................................................................................................. 7–25
Figure 7-17. Transmit | ITA Page Example ....................................................................................................... 7–29
Figure 7-18. Receive | General | IF Page Example .......................................................................................... 7–30
Figure 7-19. Receive | Data Page Example ...................................................................................................... 7–33
Figure 7-20. Receive | Reed-Solomon Page Example ..................................................................................... 7–37
Figure 7-21. Receive | CNC Page Example ..................................................................................................... 7–38
Figure 7-22. Receive | ODU-LNB Page Example ............................................................................................. 7–39
Figure 7-23. Receive | ITA Page Example ........................................................................................................ 7–40
Figure 7-24. Interface | TX Setup Page Example ............................................................................................. 7–42
Figure 7-25. Interface | RX Setup Pag e Example ............................................................................................. 7–44
Figure 7-26. Interface | General Page Example ............................................................................................... 7–46
Figure 7-27. Monitor | Voltages Page Ex ample ................................................................................................ 7–47
Figure 7-28. Monitor | ETH Link Status Page Example .................................................................................... 7–49
Figure 7-29. Monitor | Event Page Exam ple ..................................................................................................... 7–51
Figure 7-30. Monitor | CNC Page Example ...................................................................................................... 7–52
Figure 7-31. Alarms | Transmit Page Example ................................................................................................. 7–53
Figure 7-32. Alarms | Receive Page Example .................................................................................................. 7–56
Figure 7-33. Alarms | Common Page Example ................................................................................................ 7–60
Figure 7-34. Alarms | Backward Page Example ............................................................................................... 7–62
Figure 7-35. System | Terminal / Remote Page Example ................................................................................ 7–64
Figure 7-36. System | HW-FW Config Page Example ...................................................................................... 7–66
Figure 7-37. System | Features Page Example ................................................................................................ 7–67
Figure 7-38. Test | Pattern / Carrier Page Example.......................................................................................... 7–69
Figure 7-39. Test | I/Q Plot Page Example ....................................................................................................... 7–71
Figure 7-40. Test | Spectrum Plot Page Example ............................................................................................. 7–72
Figure 8-1. Tools | Internet Options | Advanced | Sec ur it y Setti ngs ................................................................... 8–3
Figure 8-2. Configure Page ................................................................................................................................. 8–4
Figure 8-3. Monitor Page .................................................................................................................................. 8–10
Figure 8-4. Log Page ........................................................................................................................................ 8–12
Figure 8-5. Event Log Page Cleared ................................................................................................................ 8–13
Figure 8-6 Firmware Unit Info Page .................................................................................................................. 8–14
Figure 8-7. Upload Page ................................................................................................................................... 8–15
Figure 9-1. Login screen and Main Menu Examples .......................................................................................... 9–2
Figure 9-2. Main Menu Example ......................................................................................................................... 9–4
Figure 9-3. Configuration Menu Example ........................................................................................................... 9–5
Figure 9-4. Active Encryption Ke y Menu Example.............................................................................................. 9–7
Figure 9-5. Future Encryption Ke y Menu Example ............................................................................................. 9–8
Figure 9-6. Encryption Menu Example ................................................................................................................ 9–9
Figure 9-7. Network Menu Example ................................................................................................................. 9–10
Figure 9-8. Credentials Menu Example ............................................................................................................ 9–11
Figure 9-9. SSH Console Menu Example ......................................................................................................... 9–12
Figure 9-10. Module Status Screen Example ................................................................................................... 9–13
Figure 9-11. Event Log Menu Example ............................................................................................................ 9–14
Figure 9-12. Unit Info Menu Example ............................................................................................................... 9–15
Figure 9-13. Comtech EF Data Information Screen Example .......................................................................... 9–16
Figure C-1. DMD1050TS Ethernet Network Connection ................................................................................... C–5
Figure C-2. Local Area Connection Status Box ................................................................................................. C–6
Figure C-3. Local Area Connection Properties Box ........................................................................................... C–6
Figure C-4. Internet Protocol (TCP/IP) Properties Box ...................................................................................... C–7
Figure D-1. Ethernet Connection ....................................................................................................................... D–2
Figure D-2. Internet Browser Address ............................................................................................................... D–2
Figure D-3. Web Browser - Modem Introduction Page ...................................................................................... D–3
Figure D-4. Password Setup Screen ................................................................................................................. D–4
Figure D-5. Modem Addressing Screen ............................................................................................................. D–5
Figure D-6. User Settings/Access Screen ......................................................................................................... D–8
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Figure F-1. Point-to-Point Applications ............................................................................................................... F–1
Figure F-2. Central Office Assigns Network Addresses and Controls all Services ............................................ F–2
Figure F-3. Point to Multipoint – Large Outbound, Smaller Returns ................................................................... F–3
Figure F-4. High Speed Mesh ............................................................................................................................. F–4
Figure F-5. Low Speed Mesh .............................................................................................................................. F–5
Figure F-6. Remote Monitor and Control ............................................................................................................ F–6
Figure F-7. Prioritized Traffic Queues ................................................................................................................. F–7
Figure H-1. Web Browser Menu Example ......................................................................................................... H–5
Figure I-1. Initial Setup DMD1050TS, Modulator IF ............................................................................................. I–4
Figure I-2. Initial Setup DMD1050TS, Modulator Data ........................................................................................ I–4
Figure I-3. Initial Setup DMD1050TS, Modulator ITA .......................................................................................... I–5
Figure I-4. Initial Setup DMD1050TS, Demodulator IF ........................................................................................ I–5
Figure I-5. Initial Setup DMD1050TS, Demodulator Data .................................................................................... I–6
Figure I-6. Initial Setup DMD1050TS, Demodulator ITA ...................................................................................... I–6
Figure I-7. Initial Setup DMD1050TS, Modulator ITA ........................................................................................ I–13
Figure I-8. Initial Setup DMD1050TS, Demodulator ITA .................................................................................... I–13
Figure I-9. Initial Setup DMD1050TS, Modulator ITA (Enabled)........................................................................ I–14
Figure I-10. Initial Setup DMD1050TS, Demodulator ITA (Enabled) ................................................................. I–14
Figure I-11. DMD1050TS I/Q for BPSK 2/3 ....................................................................................................... I–15
Figure I-12. DMD1050TS ITA Status for QPSK 2/3 ........................................................................................... I–15
Figure I-13. DMD1050TS I/Q for QPSK 2/3 ....................................................................................................... I–16
Figure I-14. DMD1050TS ITA Status for 16APSK 1/2 ....................................................................................... I–16
Figure I-15. DMD1050TS I/Q for 16APSK 1/2 ................................................................................................... I–17
Figure I-16. DMD1050TS ITA Status for 8PSK 3/4 ........................................................................................... I–17
Figure I-17. DMD1050TS I/Q for 8PSK 3/4 ........................................................................................................ I–18
Figure I-18. DMD1050TS ITA Status for 16APSK 7/8 ....................................................................................... I–18
Figure I-19. DMD1050TS I/Q for 16APSK 7/8 ................................................................................................... I–19
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List of Tables
Table 3-1. DMD1050TS HDLC Interoperation .................................................................................................. 3–13
Table 3-2. R-S Codes ....................................................................................................................................... 3–24
Table 3-3. Local AUPC Functions ..................................................................................................................... 3–27
Table 3-4. Remote AUPC Functions (EF AUPC Only) ..................................................................................... 3–28
Table 3-5. Pin Assignments .............................................................................................................................. 3–30
Table 3-6. IBS Standard .................................................................................................................................... 3–31
Table 3-7. SCC Overhead Rates ...................................................................................................................... 3–34
Table 3-8. SCC Overhead Chart Examples (Viterbi 3/4 w/V.35 Scrambler) .................................................... 3–36
Table 4-1. DC Input Power Ports (J16) ............................................................................................................... 4–5
Table 4-2. BUC & LNB DC Input Connector (J3) ................................................................................................ 4–5
Table 4-3. ASYNC & Remote Ports (J3) ............................................................................................................. 4–6
Table 4-4. Default/Reset connections: 3-Pin male Connector (JP1 & JP2) ...................................................... 4–7
Table 4-5. MIL-188-114A Port (RS-422) 26-Pin Dual Row Header (J2) ............................................................ 4–8
Table 4-6. DS-101 Simple Key Loader (J17) ...................................................................................................... 4–9
Table 4-7. Antenna Handover (J18) .................................................................................................................... 4–9
Table 5-1. Symptoms and Possible Causes ....................................................................................................... 5–1
Table 6-1. B/O/QPSK BER Performance (Viterbi) ............................................................................................ 6–25
Table 6-2. B/O/QPSK BER Performance (Sequential) ..................................................................................... 6–25
Table 6-3. B/O/QPSK BER Performance (Viterbi – w/RS) ............................................................................... 6–25
Table 6-4. 8PSK BER Performance (Trellis) ..................................................................................................... 6–25
Table 6-5. 16QAM BER Performance (Viterbi) ................................................................................................. 6–25
Table 6-6. 16QAM BER Perf ormance (Viterbi w/RS) ....................................................................................... 6–26
Table 6-7. (O)QPSK BER Performancfe (Turbo) .............................................................................................. 6–26
Table 6-8. BPSK BER Performance (Turbo) .................................................................................................... 6–26
Table 6-9. 8PSK BER Performance (Turbo) ..................................................................................................... 6–26
Table 6-10. 16QAM BER Performance (Turbo) ................................................................................................ 6–26
Table 6-11. B/O/QPSK BER Performance (LDPC)........................................................................................... 6–27
Table 6-12. 8PSK / 8-QAM Rate BER Performance (LDPC) ........................................................................... 6–27
Table 6-13. 16QAM BER Performance (LDPC)................................................................................................ 6–27
Table 6-14. IBS/IDR Compliant Framing Modes............................................................................................... 6–27
Table 6-15. B/O/QPSK BER Performance (MIL STD 188-165B or STANAG) Turbo ....................................... 6–28
Table 6-16. 8PSK BER Performance (MIL STD 188-165B or STANAG) Turbo ............................................... 6–28
Table 6-17. 16APSK BER Performance (MIL STD 188-165B or STANAG) Turbo .......................................... 6–29
Table 7-1. LED Indicators ................................................................................................................................... 7–3
Table 7-2. SNMP Parameter s ........................................................................................................................... 7–12
Table 7-3. Web Parameters .............................................................................................................................. 7–12
Table 7-4. Terminal and Remote Port Parameters ........................................................................................... 7–13
Table 7-5. Network Specifications .................................................................................................................... 7–17
Table 7-6. Network Specifications .................................................................................................................... 7–32
Table 8-1. Event Log Message Types .............................................................................................................. 8–13
Table 9-1. CLI Subm enus ................................................................................................................................... 9–5
Table 9-2. Configuration M enu Op tio ns .............................................................................................................. 9–6
Table 9-3. Active Encr yption Ke y Menu Opt ions ................................................................................................ 9–7
Table 9-4. Future Encryption Key Menu Options ................................................................................................ 9–8
Table 9-5. Encryption Menu Opti ons .................................................................................................................. 9–9
Table 9-6. Network Menu Optio ns .................................................................................................................... 9–10
Table 9-7. Credentials Menu Options ............................................................................................................... 9–11
Table 9-8. SSH Console Menu Options ............................................................................................................ 9–12
Table 9-9. Event Log Menu Options ................................................................................................................. 9–14
Table 9-10. Unit Information Options ................................................................................................................ 9–15
Table G-1. Strap Codes (Dis = Disable) ............................................................................................................ G–1
Table I-1. ITA Waveforms and Selection ............................................................................................................. I–2
Table I-2. Initial Modem Setup ............................................................................................................................. I–3
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Table I-3. ITA Setup ............................................................................................................................................. I–7
Table I-4. Transmit ITA Functions ........................................................................................................................ I–8
Table I-5. Receive ITA Functions ......................................................................................................................... I–8
Table I-6. ITA Waveform Masks (Modulator UUT)............................................................................................... I–9
Table I-7. ITA Waveform Masks (Demodulator UUT) ........................................................................................ I–10
Table I-8. ITA Waveform Masks (Reference Modulator) ................................................................................... I–11
Table I-9. ITA Waveform Masks (Reference Demodulator) ............................................................................... I–12
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Acronym List
Acronym Description
ACM Adaptive Coding and Modulation
AES Advanced Encryption Standard
AGC Automatic Gain Control
ASIC Application Specific Integrated Circuit
AUPC Automatic Upling Power Control
BER Bit Error Rate
BERT Bit Error Rate Test
BIST Built-In Self Test
BUC Block Up Converter
CBC Code Block Chaining
CDMA Code Division Multiple Access
CLI Command Line Inerface
COMMSPEC Communication Specification
CRC Cyclic Redundancy Check
DC Direct Current
DHCP Dynamic Host Configuration Protocol
DSP Digital Signal Processor
DSSS Direct Sequence Spread Spectrum
EBEM Enhanced Bandwidth Efficient Modem
EEI Enhanced Ethernet Interface
EKMS Electronic Key Management System
EMF Electromagnetic Field
ESD Electrostatic Discharge
FDMA Frequency Division Multiple Access
FEC Forward Error Correction
FIFO First In First Out
FIPS Federal Information Processing Standards
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Acronym Description
FPGA Field Programmable Gate Array
FTP File Transfer Protocol
GUI Graphic User Interface
HDLC High-level Data Link Control
HSSI High Speed Serial Interface
IBS Intelsat Business Service
IDR Intermediate Data Rate
IESS Intelsat Earth Station Standards
ITA Information Throughput Adaption
IV Initialization Vectors
KDF Key Derivation Function
LAN Local Area Network
LDPC Low Density Parity Check
LED Light Emitting Diode
M&C Monitor and Control
MIP Microprocessor without Interlocked Pipeline Stages
MODCOD Modulation and Code Rate
NIST National Institute of Standards and Technology
OID Object Identifier
PD Plesiochronous / Doppler
PER Packet Error Rate
PLL Phased Locked Loop
QoS Quality of Service
RLLP Radyne Link Level Protocol
R-S Reed Solomon
RT Receive Timing
RTS Request to Send
SCC Satellite Control Channel
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Acronym Description
SCPC Single Carrier Per Channel
SCR Serial Clock Receive
SCT Serial Clock Tr ansmission
SCTE Serial Clock Transmission External
SKL Simple Key Loader
SNMP Simple Network Management Protocol
SSH Secure Shell
ST Send Timing
TDK Traffic Decryption Key
TEK Traffic Encryption Keys
TRANSEC Transmission Security
WAN Wide Area Network
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Unit / Symbol
Definition
Ω
Ohm
A
Ampere
bps
bits per second
˚C
Celsius (degrees)
Hz
Hertz
kHz
kiloHertz
dB
decibel
dBc
Decibels relative t the carrier
dBm
Decibel-milliwatts
˚F
Fahrenheit (degrees)
Kbps
Kilobit per second
kg
kilogram
ksps
Kilosymbols per second
lbs.
pounds
mA
Milli-amp
Mbps
Megabit per second
MHz
Megahertz
mm
millimeter
ms
millisecond
Msps
Megasymbols per second
mW
milliwatt
in.
inch
Pps
Packets per second
ųF
100 micro-farads
W
Watt
V
Volt
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Units of Measurement
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DMD1050TS Satellite Modem Board
Unless otherwise specified, these products are referred to collectively throughout
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PREFACE
About this Manual
This manual provides installat ion and oper ati on inf orm atio n for the Comtech EF Data
DMD1050TS Satellite Mo d em Board.
this manual as “the modem” or “the unit”.
This is an informational document intended for the persons responsible for the operation and
maintenance of the modem.
Conventions and References
Patents and Trademarks
See all of Comtech EF Data's (CEFD) Patents and Patents Pending at:
http://patents.comtechefdata.com
• Comtech EF Data acknowledges that all trademarks are the property of the trademark
owners.
• DoubleTalk® is licensed from "Raytheon Applied Signal Technology".
• DoubleTalk® is a registered trademark of "Raytheon Applied Signal Technology".
• Carrier-in-Carrier® is a registered trademark of Comtech EF Data.
.
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Related Documents
The following documents are referenced in this manual:
• Department of Defense (DOD) MIL-STD-188-114A, Electrical Characteristics of Digital
Interface Circuits
• Department of Defense (DOD) MIL-STD-188-165A, Interoper a bility and Performance
Standards for SHF Satellite Communications PSK Modems (FDMA Operation) (dated
November 2005)
• INTELSAT Earth Station Standards IESS-308, -309, -310, and -315
• EUTELSAT SMS
Military Standards
References to “MIL-STD-188” apply to the 114A series (i.e., MIL-STD-188-114A), which provides
electrical and functional characteristics of the unbalanced and balanced voltage digital interface
circuits applicable to both long haul and tactical communications. Specifically, these references
apply to the MIL-STD-188-114A electrical characteristics for a balanced voltage digital interface
circuit, Type 1 generator, for the full range of data rates. For more information, refer to the
Department of Defense (DOD) MIL-STD-188-114A, Electrical Characteristics of Digital Interface
Circuits.
Warnings, Cautions, and Notes
A WARNING GIVES INFORMATION ABOUT A POSSIBLE HAZARD THAT MAY
CAUSE DEATH OR SERIOUS INJURY.
A CAUTION gives information about a possible hazard that MAY CAUSE INJURY
or PROPERTY DAMAGE.
A NOTE gives important information about a task or the equipment.
A REFERENCE directs you to additional information about a task or the
equipment.
Examples of Multi-Hazard Notices
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Recommended Standard Designations
The Electronic Industries Association (EIA) designations supersede the Recommended Standard
(RS) designations. References to the old designations may be shown when depicting actual text
(e.g., RS-232) displayed on Web Server pages, serial remote interfaces, Telnet Command Line
Interfaces (CLIs), or unit rear panels. All other references in the manual refer to EIA designations.
CAUTION – YOU SHOULD CAREFULLY REVIEW THE FOLLOWING INFORMATION.
Safety and Compliance
This product is designed for integration into “third party” terminals. The responsibility for electrical
safety and compliance lies with the “thir d party”.
Operating Environment
Refer to Section 2.4.
Product Support
For all product support, please call:
+1.240.243.1880
+1.866.472.3963 (toll free USA)
Comtech EF Data Headquarters
http://www.comtechefdata.com
Comtech EF Data Corp.
2114 West 7th Street
Tempe, Arizona USA 85281
+1.480.333.2200
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Warranty Policy
Comtech EF Data products are warranted against defects in material and workmanship for a
specific period from the date of shipment, and this period varies by product. In most cases, the
warranty period is two years. During the warranty period, Comtech EF Data will, at its opt ion,
repair or replace products that prove to be defective. Repairs are warranted for the remainder of
the original warranty or a 90 day extended war ranty, whichever is longer. Contact Comtech EF
Data for the warranty period specific to the product purchased.
For equipment under warranty, the owner is responsible for freight to Comtech EF Data and all
related customs, taxes, tariffs, insurance, etc. Comtech EF Data is responsible for the freight
charges only for return of the equipment from the factory to the owner. Comtech EF Data will
return the equipment by the same method (i.e., Air, Express, Surface) as the equipment was sent
to Comtech EF Data.
All equipment returned for warranty repair must have a valid RMA number issued prior to return
and be marked clearly on the return packaging. Comtech EF Data strongly recommends all
equipment be returned in its original packaging.
Comtech EF Data Corporation’s obligations under this warranty are limited to repair or
replacement of failed parts, and the return shipment to the buyer of the repaired or replaced
parts.
Limitations of Warranty
The warranty does not apply to any part of a product that has been installed, altered, repaired, or
misused in any way that, in the opinion of Comtech EF Data Corporation, would affect the
reliability or detracts from the performance of any part of the product, or is damaged as the result
of use in a way or with equipment that had not been previously approved by Comtech EF Data
Corporation.
The warranty does not apply to any product or parts thereof where the serial number or the serial
number of any of its parts has been altered, defaced, or removed.
The warranty does not cover damage or loss incurred in transportation of the product.
The warranty does not cover replacement or repair necessitated by loss or damage from any
cause beyond the control of Comtech EF Data Corporation, such as lightning or other natural and
weather related events or wartime environments.
The warranty does not cover any labor involved in the removal and or reinstallation of warranted
equipment or parts on site, or any labor required to diagnose the necessity for repair or
replacement.
The warranty excludes any responsibility by Comtech EF Data Corporation for incidental or
consequential damages arising from the use of the equipment or products, or for any inability to
use them either separate from or in combination with any other equipment or products.
A fixed charge established for each product will be imposed for all equipment returned for
warranty repair where Comtech EF Data Corporation cannot identify the cause of the reported
failure.
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Exclusive Remedies
Comtech EF Data Corporation’s warranty, as stated is in lieu of all other warranties , ex pres s ed,
implied, or statutory, including those of m erchantabilit y and f itness f or a partic ular pur pose. The
buyer shall pass on to any purchaser , les see, or other user of Comtec h EF Data Corporation’s
products, the aforementioned warrant y, and shall ind e m nif y and hold harmless Comtech EF
Data Corporation from any claims or liability of s uch purc haser , lessee, or us er based upon
allegations that the buyer, its agents, or employees have made additional warranties or
representations as to product pref erence or us e.
The remedies provided herein are the buyer’s sole and exclusive remedies. Comtech EF Data
shall not be liable for any direct, indirect, special, incidental, or consequential damages, whether
based on contract, tort, or any other legal theory.
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Chapter 1. Introduction
The DMD1050TS Satellite Modem Board, is designed for satellite IP, telecom, video and internet
applications.
1.1 Overview
• Full Duplex L-Band satellite modem card
• MIL-STD-188-165A standards
• STANAG 4486 Edition 3 (EBEM)
• FIPs 140-2 Transmision Security
• IDR, IBS and DVB
• Data rates up to 37 Mbps
Figure 1-1. DMD1050TS Satellite Board Modem (Top View)
The DMD1050TS remote accessibility rivals all others in the field. Remote control is via Radyne
Link Level Protocol (RLLP), Ethernet 100 Base-T SNMP and Web Browser. It includes control of
all the modem's features, plus software maintenance. The DMD1050TS shows monitor and
control functions on a PC screen.
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Additional options and configuration, such as Monitor and Control (M&C), can be a ctiva ted in
seconds via the Web Browser.
Compatibility is maintained with other modems, such as the DMD2050E, SLM-5650A,
DMD1050T, DMD2050, DMD50, DMD20 and the DISA-certified, MIL-188-165 compliant
DMD15L, for seamless substitution and addition to existing systems. Compatibi lit y with the Vias at
MD1366 EBEM modem is also provided.
The DMD1050TS offers built in standard inter f ac es that are selectable from MIL-188-114A and a
Dual Port Ethernet Bridge.
1.2 DMD1050TS Configurations
You can configure the DMD1050TS in different ways:
• Features and options installed when the unit is ordered
• Feature upgrades
• Hardware options you can install at your location
• Options installed in a unit at a Comtech EF Data Service Center
1.2.1 Features/Options Installed at Time of Order
Features installed when the unit is ordered consist of options pre-installed/initialized in the factory
before shipment. You can see these from the web browser.
Factory installed options are chassis and board configurations that occur during manufacture.
1.2.2 Feature Upgrades
Feature upgrades are an easy way of changing the feature set for an installed modem. Feature
upgrades are how most options are implemented.
Purchase feature upgrades any time by contacting Comtech EF Data.
1.3 Function Accessibility
With a terminal or personal computer and a serial link, you have access to all functions for remote
monitoring and control.
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Step
Procedure
2
Remove the cardboard/foam space covering the modem.
3
Remove the modem and user’s manual from the carton.
5
Inspect the equipment for any possible damage incurred during shipment.
6
Check the contents against the packing list to verify completeness of the
7
Refer to the sections that follow for further installation instructions.
Revision 1
Chapter 2. Installation
2.1 Unpacking and Inspection
Do not use any cutting tool that will extend more than 1/2 inch into the
container. This can cause damage to the modem.
Inspect shipping containers for damage. If shipping containers are damaged, keep them until the
contents of the shipment have been carefully inspected and checked for normal operation.
The Satellite Modem Board and its Installation and Operation Manual are packaged and shipped in
a pre-formed, reusable cardboard carton containing foam spacing for maximum shipping protection.
Unpack and inspect the modem as follows:
1
4 Save the packing material for storage or reshipment purposes.
The Universal Satellite Modem was carefully packaged to avoid damage and should arrive
complete with the following items for proper installation:
1. DMD1050TS Satellite Modem Board
2. Installation and Operation Manual
Cut the tape at the top of the carton indicated by OPEN THIS END.
Note: If damage is evident, contact the carrier and Comtech EF Data immediately
and submit a damage report.
shipment.
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WARNING - DANGER OF EXPLOSION – LITHIUM BATTERY
Board.
CAUTION - EQUIPMENT DAMAGE
Before you touch the equipment, obey the ESD precautions.
Revision 1
2.2 Installation Requirements
This unit contains a lithium battery. You must replace the lithium battery with
the same or equivalent battery that is recommended by the manufacturer. You
must dispose of used batteries as required by local and national regulations.
Make sure to prevent static discharge that can cause damage to the Modem
Electrostatic discharge (ESD) causes damage to the equipment.
Installation of the DMD1050TS Modem Board requires adequate planning by the user to ensure
no damage will occur to the unit. Package design considerations for the modem board include
mounting, temperature limits, adequate ventilation, limited vibration, no exposure to
condensation/ moisture and a stable power source.
Mating connectors are supplied with each unit. A full description of the modems pin outs can be
found in Section 4. Appendix E gives details of the various connectors and mating connectors
supplied.
2.3 Removal from Container and Assembly
The DMD1050TS Modem Unit is assembled fully when shipped.
Carefully unpack the unit.
Make sure that all of the shipped items are in the container.
2.4 Installation Considerations
The operating temperature range for the DMD1050TS is 0 to +60°C (+32 to +140°F). It is
designed to be conduction cooled. Heat spreaders conduct from heat generating components to
the edges of the assembly.
You can use airflow for cooling, as long as you make sure sufficient airflow is provided so that the
rail temperatures do not exceed +60°C (+140°F).
When installed to use conduction cooling, it is best to attach to the metal side rails. See the
orange arrows in Figure 2-1. There are four mounting holes on each side for this purpose.
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DMD1050TS Satellite Modem Board
CAUTION – EQUIPMENT DAMAGE
thus damaged.
Revision 1
Figure 2-1. Heat Path
Make sure the Modem board has adequate spacing between it and other products, to avoid cross
talk or electrical shorts. Do not put Modems immediately above or below a high electromagnetic
field (EMF) generator, to prevent output signal corruption and incorrect receive operation.
Do not install the DMD1050TS in an unprotected outdoor location, where there is direct contact
with rain, snow, wind or sun.
2.4.1 Tools Required
When you install the modem assembly, make sure it is not put under stress and
The only tools necessary are those used for installing and tightening the eight screws that attach
the unit.
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CAUTION – EQUIPMENT DAMAGE
Modulator:
Data Rate:
2.048 Mbps
Mode:
Closed Network
Satellite Framing:
None
Scrambler:
V.35 (IESS)
Inner FEC:
1/2 Rate Viterbi
Outer FEC:
Disabled
Modulation:
QPSK
Frequency:
950 MHz
Modulator Output Power:
-20 dBm
Demodulator:
Data Rate:
2.048 Mbps
Mode:
Closed Network
Satellite Framing:
None
Scrambler:
V.35 (IESS)
Inner FEC:
1/2 Rate Viterbi
Outer FEC:
Disabled
Modulation:
QPSK
Frequency:
950 MHz
CAUTION – NETWORK MALFUNCTION
modem and a loopback, it can cause unwanted results.
Revision 1
2.5 DMD1050TS Initial Configuration Check
Make sure to select the DMD1050TS Interface Type (MIL-188-114A or Ethernet
Data Interface) before you install the mating connectors. Failure to do this can
cause damage to the Data Interface.
The DMD1050TS is shipped from the factory with preset factory defaults. Upon initial power-up,
do a user check to examine the shipped modem configuration.
2.5.1 Standard DMD1050TS Factory Configuration Settings
Use of Strap Code 26 can set the modem configuration. For an explanation and listing of
available Strap Codes, see Appendix G. The Frequency and Modulator Output Power are set
independently of the strap code.
Using the modem’s loopback capabilities with the Ethernet data interface can
cause undesirable network loops. Before you do any data test with an Ethernet
interface, make sure to use two modems connected back-to-back. If you use one
To lock up the modem:
• Enter IF Loopback Enable in the Test Menu
- or -
• Connect a Loopback Cable from TX port to RX port
Installation 2–4 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
CAUTION – EQUIPMENT DAMAGE
If the input DC power is poor quality, it can cause damage to the unit.
CAUTION - TRAFFIC DISRUPTION
configuration settings are not known and possibly incorrect.
Boot Modes: IPTEST
IP Address Mask
255.255.255.000
Modem IP Address
192.168.0.238
TRANSEC IP Address
192.168.0.239
Server IP Address
192.168.000.101
Router IP Address
192.168.000.102
Revision 1
2.6 Modulator Checkout
The Modulator checkout descriptions assume that the DMD1050TS is install ed in a suitabl e
location with clean, stable DC power. Make sure that DC spikes do not occur during initial power
up.
2.6.1 Initial Power-Up
Make sure that the modem’s input DC power is clean, stable and free of spikes.
Before you connect power to the unit, disconnect the transmit output from the
operating ground station equipment.
Communication traffic can be disru pted by connecting power to a unit when the
New units are shipped with the transmit carrier set to OFF.
You can do the initial field checkout of the modem using the Web Browser or the Terminal Mode.
Both have the advantage of giving full screen access to all of the modem’s parameters. However,
a separate terminal or computer running a Terminal Program is necessary. The modem is
configured with the Web Browser enabled.
2.6.2 M&C Web Browser Setup
The Ethernet M&C (J11) Interface requires a standard RJ45 Male connector. T he Ether net
Interface is shipped from the factory in an addressable, default condition that gives you access to
the unit. This condition is identified as IP TEST MODE.
See Appendices C & D for set up of the Ethernet M&C Interface.
Connect an Ethernet cable between the unit and a computer that has web browser capability.
Open the browser and enter the default web address for the unit.
See Chapter 7 for a description of the Graphic User Interface (GUI) operation and parameters.
See Appendix C and Appendix D for setup of the TCP-IP interface and Web browser.
Installation 2–5 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
Recommended Terminal Settings
Emulation Type:
VT-100
Baud Rate:
19.2 K
Data Bits:
8
Parity:
No Parity (Fixed)
Revision 1
2.6.3 M&C Terminal Setup
You can do the initial field checkout of the modem in Terminal Mode. The Terminal Mode gives
you full screen access to the modem’s parameters. However, it requires a separate terminal or
computer running a terminal program such as Hyper-terminal, and connection to the applicable
pins on the Remote Port connector (J3).
You can change these settings via the Web Browser.
2.6.3.1 Web Browser and Terminal Interfaces Reset
If you cannot use the Web Browser or Terminal interface, reset the interface defaults.
To reset the interface defaults, use the shorting plug (CNRSHUNT). Do these steps:
1. Make sure the electrical power to the unit is disconnected.
2. Find the JP1 and JP2 connectors.
3. Find pins 1 and 2 on the JP1 and JP2 connectors.
4. Install the CNRSHUNT shorting plug on pins 1 and 2 of JP1, and pins 1 and 2 of JP2.
5. Connect the electrical power to the unit.
This resets the interface defaults. See Section 3 for more information.
2.7 Storage
Store the unit in its original packaging. Store the unit in a dry location, where the temperature is
stable. Keep it away from direct contact with rain, snow, wind, sun or anything that may cause
damage to it.
Installation 2–6 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
Revision 1
Chapter 3. Theory of Operation
3.1 DMD1050TS Hardware
The DMD1050TS uses three printed circuit cards in its design. The standard configuration
consists of:
• L-Band Assembly
• Digital Baseband Assembly
• FIPs 140-2 TRANSEC Security module
This configuration includes built in data interfaces and several software upgrade options.
A block diagram of the DMD1050TS is shown in Figure 3-1.
Theory of Operation 3–1 MN-DMD1050TS
Figure 3-1. DMD1050TS Block Diagram
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DMD1050TS Satellite Modem Board
Quadrature
Demodulator
IF Board Connector (40-Pin Header)
Demodulator I
Demodulator I Inv.
Demodulator Q
Demodulator Q Inv.
AGC
L-Band
Synthesizer
PDA
Analog Q Inv.
Analog I Inv.
L-Band
Synthesizer
Quadrature
Modulator
Analog Q
Analog I
LPF
LPF
Switch
RxLB
TxLB
Coupler
DCSA
Revision 1
3.1.1 L-Band Printed Circuit Card
The L-Band/IF Printed Circuit Card consists of:
• Analog modulation function
• Analog complex down conversion
• Two wide-band digital synthesizers
The block diagram of the L-Band Assembly is shown in Figure 3-2.
Figure 3-2. L-Band Assembly
In the modulator, analog in-phase (I) and quadrature (Q) signals are generated on the Digital
Baseband Printed Circuit Card, routed to the L-Band Printed Circuit Card and modulated at the
desired frequency.
The L-Band modulated signal is then passed through a microprocessor-controlled variable
attenuator, providing gain control of the output signal.
In the complex down converter, the signal for demodulation is amplified and sent through a
variable wideband attenuator for Automatic Gain Control (AGC). The gain-controlled signal is
then passed through a complex down converter to a low IF.
Theory of Operation 3–2 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
Battery
Xtal
uProcessor
PCMCIA
Controller
SCC2
SMC2
SCC3
GPIO
uProc
Bus
SPI
40
MHz
x2
Compact
Flash
Demodulator
FPGA
SDRAM
2 x
Boot
Flash
8 Mbx8
256 Mbx16
25 MHz
Xtal
Ethernet
PHY
Relays
Fault
(DB9)
RLLP
Terminal
Ethernet
DAC
AGC
Modulator
FPGA
SCT/SCTE
Rx SAT
Loopback
80 MHz
uProc Bus
SPI Bus
I/Q
TP
2 x
r2r
Q
I
ADC
ADC
Analog I Filter
Analog I Inv Filter
Analog Q Inv Filter
Analog Q Filter
Alias
Filter
Alias
Filter
Analog I Unfilter
Analog I Inv Unfilter
Analog Q Unfilter
Analog Q Inv Unfilter
DMD1050 IF Board Connector (40-Pin Header)
I
Q
Analog Q Inv Unfilter
Analog Q Unfilter
Analog I Inv Unfilter
Analog I Unfilter
Analog I Filter
Analog I Inv Filter
Analog Q Filter
Analog Q Inv Filter
Alias
Filter
Alias
Filter
ADC
ADC
DB-25 Sync Data (RS-422, MIL-STD-188-114A) & Ethernet 10Base-T
TPC Codec
ADC
Serial
EEPROM
SPI Bus
SPI Bus
Terrestrial Data
LPF
DAC
Tx
Clk
SCT
LPF
R2R
SCT
R2R
LPF
Insert DSP
Mem Space DMA
Drop DSP
Mem Space DMA
Buf
SRAM
40 MHz
40 MHz
Async (DB-9)
Buffers
Terrestrial Data
Buffers
Terrestrial Data
Buffers
10 Mhz
OCXO
PLL
Buffers
Buffers
Revision 1
3.1.2 Baseband Processing Printed Circuit Card
The advent of million-plus gate count Field-programmable Gate Arrays (FPGAs), advanced log ic
synthesis tools and Digital Signal Processors (DSPs) providing hundreds of Microprocessor
without Interlocked Pipeline Stages (MIPs) supported the design of a software-configurable
modem. Large, fast FPGAs now provide designers with what is essentia lly an on-the-fly
programmable Application-specific Integrated Circuit (ASIC).
High speed, complex digital logic functions that previously could only be implemented in
dedicated integrated circuits, are now downloaded from a micro-controller through a serial or
peripheral interface. When a new digital logic function is needed, a new configuration file is
loaded into the FPGA. There is no limit to the number of digital logic configurations available to
the FPGA, aside from the amount of Flash memory available to the system microprocessor for
storage of configuration files.
The DMD1050TS Baseband Processing Printed Circuit Card provides a flexible architecture that
allows many different modes of terrestrial and satellite framing, various Forward Error Correction
(FEC) options, digital voic e proc es sing and several different modulation/demodulation formats.
Also included on the Baseband Printed Circuit Card are a MIL-188-114A/RS-4 22 synchronous
interface and a two-p or t 10/ 100 Eth ernet Bri dge int erf ac e.
Figure 3-3. DMD1050TS Baseband Processing Card Block Diagram
Theory of Operation 3–3 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
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The Baseband Printed Circuit Card also contains the M&C Circuitry responsible for:
• Programmable part setup and initialization
• Continuous control and adjustment of some functions
• Calibration
• Monitoring fault status
• Calculating and displaying measurements
• Calculations
• User monitor and control interface including any remote interface
• Unit configuration and feature set
The M&C System is based on a powerful microprocessor with a large amount of Flash memory.
Several bus architectures are used to interconnect the M&C to all components of the
DMD1050TS. Communication to the outside world is done via connections to the remote port,
terminal port, Ethernet port and alarm port. The M&C runs on software programmed into its Flash
memory. The memory can be reprogrammed via the Ethernet port to allow changes in software.
3.1.3 FIPs 140 Level 2 TRANSEC Security Module
The DMD1050TS Modem Card is optionally equipped with the FIPs 140 Level 2 Transmission
Security (TRANSEC) Security Module in standa lon e op er ation w ith the DMD1 05 0T S Modem.
The Federal Information Processing Standards (FIPS) Module is a standalone, independentlycertified optional card that is secured to the DMD1050TS baseband processing card. It does bulk
encryption and decryption of traffic over the satellite, using the AES-256 algorithm.
The DMD1050TS is fully compatible and interoperable in all specified modes of operation with
KIV-19 Provisional and KG-95-1 Provisiona l TRANSEC equipment used by the Government.
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DMD1050TS Satellite Modem Board
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Figure 3-4. DMD1050TS FIPS 140 Level 2 TRANSEC Processing Module Block Diagram
Theory of Operation 3–5 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
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3.2 DMD1050TS Functional Block Diagram
Figure 3-5 shows the DMD1050TS Functional Blocks. The modem is shown in a typical
application with customer data, Tx/Rx RF equipment and an antenna.
3.2.1 Baseband Processing
The Baseband Processor does all of the functions required for an Intelsat Buisiness Service (IBS)
/ Intermediate Data Rate (IDR) Framing Unit, a Reed-Solomon (R-S) Codec. In addition, the
Baseband Processing Section provides for transmit clock selection and rate adaptation, as well
as a rate adapter and Plesiochronous/Doppler (PD) Buffer in the receive direction. A multiplexer
is also provided for the Serial Clock Transmission (SCT) Clock Source for Loop Timing
Applications. The transmit and receive paths can be configured independently under processor
control.
The DMD1050TS supports IBS & IDR compatible framing modes. Because the modem does not
have all supporting interfaces as stipulated by IESS308/309, it is not 100% compliant. IBS and
IDR framing modes are supported in a Closed Network Mode.
3.2.2 Tx Baseband Processing
The Tx Data and Clock enters the baseband pr oc ess or , passes through a rate ad apti ng First In
First Out (FIFO) and enters the framer processor. In Closed-Net mode, the data passes through
the framer unaltered. In IDR & IBS framing enabled mode, it adds the applicable framing, as
defined in IESS-308 and 309. The data is then sent to the R-S encoder.
The R-S encoder encodes the data into R-S blocks. The blocks are then interleaved and
synchronized to the frame pattern, as defined by the selected specification (IESS-308, IESS-309,
DVB, etc.). After R-S encoding, the composite data and clock are applied to the Baseband
Loopback Circuit.
3.2.2.1 Direct Sequence Spread Spectum (DSSS)
Because the DMD1050T S is ideal for systems with very small dishes, or on-the-move systems,
there is an increased interest in Spectrum Spreading. To meet this need, optional DSSS is
available for the DMD1050TS.
DSSS works by modulating the normal carrier with a pseudo-random PN sequence (chips) at a
much higher chip rate. The chip rate is determined by the carrier’s symbol rate and a multiplying
(spreading) factor.
The DMD1050TS off er s spreading in this Low Density Parity Check (LDPC) Modulation and Code
Rate (MODCOD):
• HP-LDPC BPSK Rate 1/2
The spreading factors currently supported are 1 (Spreading Off), 2, 4, 8 and 16, up to a maximum
chip rate of 10 Mbps. You can select from among four built-in, pseudo-random PN sequences.
Thus, multiple spread carriers can occupy the same bandwidth in a Code-Division Multiple
Access (CDMA) manner.
Additionally, there is no loss in performance with spreading enabled on the DMD1050TS.
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DMD1050TS Satellite Modem Board
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Figure 3-5. DMD1050TS Universal Satellite Modem Functional Block Diagram
3.2.3 Rx Baseband Processing
The Receive Processor performs the inverse function of the Transmit Processor. Data received
from the satellite passes through the BB Loopback Circuit to the R-S decoder to the deframer.
The deframer acquires the IBS/IDR/DVB frame, synchronizes the R-S decoder, and extracts the
received data and overhead from the frame structure. It puts the data into the PD buffer, sending
the overhead data to the UIM. The data is extracted from the buffer and is sent to the UIM.
Backward Alarm indications are sent to the M&C Subsystem.
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DMD1050TS Satellite Modem Board
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3.2.4 FIPs Module Processing
The FIPs Module on the DMD1050TS does bulk encryption and decryption of traffic over the
satellite using the AES-256 algorithm. When operating in Non-STANAG 4486 (Enhanced
Bandwidth Efficient Modem (EBEM)) modes, the DMD1050TS AES encryption uses Code Block
Chaining (CBC) mode to do the encryption and decryption of the user data.
All encryption occurs directly before the FEC encoder, and decryption occurs just after the FEC
decoder.
The FIPs module maintains a local copy of the Traffic Encryption Keys (TEK) and the Initialization
Vectors (IV). It also provides Built-In Self Test (BIST) functions, per the FIPS 140-2 level
requirements. Finally, it provides a simple framing structure with the primary purpose of allowing
the decryption engine on the receive side to recover Advanc ed Enc r ypti on Sta nda r d (AES) block
alignment. However, the framing structure can also provide a means for lossless TEK rollover.
TRANSEC Overhead Rate = (3 + 16 * N) / (16 * N), where N is the Encryption Frame Length
When operating in STANAG 4486 (EBEM) mode bulk encryption and decryption are per the
STANAG requirement.
3.2.4.1 Access to the FIPs Module HTTPS Interface
See Chapter 8 or Chapter 9 for details on getting access to the functions of the FIPs TRANSEC
Module.
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DMD1050TS Satellite Modem Board
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3.3 Monitor & Control (M&C)
The modem’s M&C system is connected to most of the circuitry on any board in the modem.
These connections give status on the operating condition of the circuitry, as well as giving the
data required for the various measurements the modem provides. The M&C processes this
information, and generates status indications, as well as alar ms, when necessary. Detailed status
information is available via the modem’s user interfaces, including the remote and terminal ports.
An external summary fault is available on the RS422 Data interface.
The M&C contains a high-performance microprocessor. It is responsible for overall command and
control of modem functions. The M&C is monitoring all subsystems of the modem constantly, by
completing a periodic poll routine. It configures the modem by responding to commands input to
the system. During each poll cycle, the status of each of the subsystems is collected and reported
to each of the external ports. Performance statistics, such as Eb/No, buffer fill %, etc., are
compiled. If faults are detected, the M&C acts to minimize the effect of such faults on the system.
The DMD1050TS supports these M&C protocols :
• Terminal Interface (Section 3.3.1)
• Remote Port Interface (Section 3.4)
• Web Browser (Section 3.5)
• M&C Default/Reset Plug Settings (Sections 3.6)
• SNMP (Simple Network Management Protocol) (See the MN-DMDREMOTEOP Remote
Protocol Manual)
3.3.1 Terminal Port/ES-ES Communications (J3)
J3 functions as the Modem Remote Port, Terminal Port or ES-ES Communications. For Terminal
port application, it supports an asynchronous control protocol. It can be configured to support
either RS-232 or RS-485 signal levels. This port is intended for use in computer-based remote
M&C. All functions of the modem can be monitored and controlled from this port via a common
terminal connected to the Terminal Port. This function is selected from the Web browser.
This port is also dedicated for ES-ES Communications. The port can be configured for a number
of communications protocols. Overhead data to/from the UIM is routed to/from the
framer/deframer. This port can be configured to support either RS-232 or RS-485 signal levels.
The baud rate and protocol can be selected from the Web Browser.
3.3.2 Terminal Mode Control
The DMD1050TS Terminal Mode Control allows the use of an external terminal or computer to
monitor and control the modem from a full screen, interactive presentation operated by the
modem itself. No external software is required, other than VT-100 Terminal Emulation Software
(e.g., Procomm) for a computer when used as a terminal. The Control Port is typically used as an
RS–232 connection to the terminal device. The RS-232 operating parameters can be set using
the modem’s Web browser, and stored in Non-volatile memory for future use. See the Remote
Protocol Manual TM117.
3.3.3 Modem Terminal Mode Control
The modem can be monitored and controlled interactively in the Terminal Mode, with a full screen
presentation of current settings and status. Programming is done by selecting the item to be
modified and pressing the terminal key of the option number. For example, to change the transmit
data rate, enter 33 at the terminal. The modem responds by presenting the options available and
requesting input. Two types of input can be requested. If the input is multiple choice, select the
desired choice by pressing the Space bar. When the desired option is shown, press the Enter key
to select that option. The other possible input type requires a numerical input, such as entering a
frequency or data rate.
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DMD1050TS Satellite Modem Board
Revision 1
This type of input is followed by pressing the Enter key. Abort input at any time by pressing the
ESC key. Invalid input keys cause an error message to be shown on the terminal.
The Terminal Control Mode supports serial baud rates of 150, 300, 1200, 2400, 4800, 9600,
19200 and 38400. The connection must be set for 8 data bits, 1 stop bit and no parity (8,N,1).
Three terminal emulations are supported: VT-100, WYSE 50 and ADDS-VP.
Use the character $ for setting the screen when the terminal is used for the first time. The nonvolatile memory is reset.
3.3.4 Modem Setup for Terminal Mode
Terminal Mode communications and protocol are set from the Web browser by setting the Control
Mode parameter to Terminal. Then, set the Modem Port, Term Baud and Emulation Parameters
as desired. Next, connect a terminal to the J1connector.
All operating software for the Terminal Mode is contained in the DMD1050TS modem internal
control software.
These actions initiate full screen terminal mode printing and redrawing of the full screen: a break
signal on the communications line, pressing ESC on the terminal, or Power On of the modem.
The Terminal Mode shows the status of all user parameters controlled and read by the processor.
It offers a menu that allows changes to any controlled parameter.
The Terminal Mode uses eight screens, each of which have the basic contents of the three
modem monitor and control areas, as set in the Web browser matrix columns. Use this screen for
setting the parameters of the Modulator, Demodulator, Event, A larm, Latched Alarm and Interface
areas.
The Terminal Control Mode is menu-driven. The permitted values for each item number are
shown. T o chan ge an item, enter its number and press the Enter key. If the parameter to be
changed requires a numeric value, enter the number and press the Enter key. If the parameter is
non-numeric, press the Space bar to cycle through the list of available entries.
Items that do not have ID numbers are Status only, and cannot be changed.
3.3.5 Connect the Terminal
1. Connect the computer to the DMD1050TS Remote Connector (J3) using an RS-232
cable.
2. Select Terminal Mode in the Web Browser
3. Make sure the emulation software has these settings:
• 8 data bits
• no parity
• 1 stop bit
3.3.6 Terminal Screens
See MN-DMDREMOTEOP, the Remote Protocol Manual (TM117).
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DMD1050TS Satellite Modem Board
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3.4 Modem Remote Communications (Radyne Link Level Protocol)
The Remote Port on J3 allows for control and monitoring of parameters and functions via an
RS-232 Serial Interface, or RS-485 for RLLP Protocol.
Enter Equipment Remote Mode setup from the Web Browser interface, System menu. First, set
the Remote Port Control to Remote, then set the Multidrop Address as necessary, then set the
Remote Interface to RS232 or RS485.
Control and status messages are conveyed between the modem and all subsidiary modems, and
the host computer, using packetized message blocks in accordance with a proprietary
communications specification. This communication is handled by the RLLP, which serves as a
protocol wrapper for the RM&C data.
3.4.1 RLLP Protocol Structure
The Communications Specification (COMMSPEC) defines the interaction of computer resident
M&C software used in satellite earth station equipment such as modems, redundancy switches,
multiplexers and other ancillary support gear. Communication is bi-directional, and is typically
established on one or more full-duplex, 9600-baud, multi-drop control buses that conform to EIA
Standard RS-485.
Each piece of earth station equipment on a control bus has a unique physical address, which is
assigned during station setup/configuration, or prior to shipment. Valid decimal addresses on one
control bus range from 032 through 255, for a total of up to 224 devices per bus. Address 255 of
each control bus is usually reserved for the M&C computer.
See MN-DMDREMOTEOP, the Remote Protocol Manual (TM117) for the RLLP Protocol.
3.5 Modem Setup for Ethernet M&C (J11)
This port is dedicated for Ethernet Communications supporting SNMP, FTP and Web Browser to
the DMD1050TS base modem, and Secure HTTP (HTTPS) independently to the FIPs module.
The port is configured for 100 Base-T communications protocols. The Ethernet M&C interface
uses a standard RJ45 Male connector. The Ethernet Interface is shipped from the factory in an
addressable BOOT MODE state, that allows you to get access to the unit. This BOOT MODE
state is set to IP TEST.
Connect an Ethernet cable between the unit and a computer that has web browser capability.
Open the browser, and enter the default web address for the unit.
3.6 M&C Default/Reset Plug Settings (JP1 & JP2)
If you are having difficulty getting access to the Web Browser or the Terminal Interface, reset the
M&C interface settings. Do this by putting the supplied jumper/shunts, CNRSHUNT, on both the
JP1 and JP2 connectors, across pins 1 and 2. Power cycle the modem. See Chapter 4 and
Appendix D for details.
The default reset procedure resets these M&C items:
• TCP-IP BOOT MODE is set to IP TEST, (modem address 192.168.0.238)
• Remote Control Mode is set to Terminal
• Terminal port is set to RS232
• Web Browser Names and Passwords are reset, (See the Web Browser Setup Guide,
Appendix D)
Once default settings have been activated, remove the Jumpers.
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DMD1050TS Satellite Modem Board
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3.7 Ethernet Data Interface – (J10)
With its multi-port interface, automatic Learning and Aging, Auto-Crossover, Auto-Polarity, AutoNegotiation and embedded Quality of Service, the Enhanced Ethernet Interface offers true Plugn-Play connectivity.
If the Ethernet Data Interface is selected, then the Tx Clock Source defaults to Serial Clock
Transmit External (SCTE), and the Clock Polarity defaults to Normal.
The Ethernet Bridge Interface makes it easy to connect Local Area Networks (LANs) via satellite.
Select Ethernet as the terrestrial interfac e, and connect the LAN into any of the two RJ-45
connectors on the unit.
The DMD1050TS Ethernet Interface maintains backward compatibility with all of these products:
• DMD20/DMD20 LBST/DMD50/DMD2050/DMD2050E and the OM20 with High-level Data
Link Control (HDLC) selection RADYNE
• SLM-5650A using a Gigabit Bridge card with HDLC Comtech
• CDM-570/CDM-625 with the HDLC selection Managed 570
It allows for all higher level protocols, like DHCP, UDP, TCP, HTTP and FTP, etc., to pass
transparently through the level 2 Bridge interface, and operates with its line speed learning
capability. Ethernet packet traffic is forwarded immediately to the applicable ports without
unnecessary startup delay.
For users who want more control over traffic, the 10/100 Ethernet interface provides additional
QOS controls, and new features, such as port based priorities, strict priority queuing and the
ability to operate in a FIFO-like mode.
The full duplex capability of the standard 10/100 interface allows it to pass up to 20 Mbps in each
direction over the satellite.
The DMD1050TS supports Radyne HDLC, Comtech HDLC and 570 Managed Swich modes,
offering compatibility with all the configurations of Comtech products shown in Table 3-1.
Theory of Operation 3–12 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
Modem Model
Ethernet Interface
HDLC
DMD201
PLR5171 10/100
Radyne
DMD20 LBST1
PLR5171 10/100
Radyne
DMD201
PLR5497 10/100
Radyne
DMD1050 Legacy1
N/A
Radyne
DMD1050T1
N/A
Radyne
DMD201
PLR5584 10/100/1000
Radyne
DMD20 LBST1
PLR5584 10/100/1000
Radyne
DMD501
PLR5584 10/100/1000
Radyne
DMD20501
PLR5584 10/100/1000
Radyne
DMD20501
PLR5584-1 10/100/1000
Radyne
DMD2050E1 (Standard
SLM-5650A
Gigabit Bridge Card, Bridge Mode (1.1.2)
Comtech
Network Processor Card (GIGE Bridge
Mode)
CDM-570
Managed switch Mode
Managed 570
CDM-625
Managed switch Mode
Managed 570
Interoperates in any common selectable mode
Revision 1
Table 3-1. DMD1050TS HDLC Interoperation
Configuration)
SLM-5650A
1
PLR5584-1 10/100/1000 Radyne
Radyne
3.7.1.1 Configure the Modem to use the Ethernet Data Interface
When the optional Ethernet Data Interface Card is selected, all of the Ethernet related menus can
be used to control the interface.
1. Setup the Tx Interface Menu to: (see Chapter 7)
a. Set the Terrestrial Interface to Ethernet
b. Set the Ethernet Flow Control as desired
c. Set the Ethernet Daisy Chain as desired
d. Set the Ethernet QOS Type as desired
e. Set the Ethernet QOS Queue as desired
f. The Tx Clock is set to SCTE automatically
i. The Tx Clock Polarity is set to Normal automatically
2. Setup the Rx Interface Setup Menu to: (see Chapter 7)
a. Set the Terrestrial Interface to Ethernet.
b. Set the Buffer Size to Zero (provides minimum delay).
c. Buffer Clock is set to Rx Sat.
d. Set the Buffer Clock Polarity to Normal.
3.7.1.2 Ethernet Flow Control
When Ethernet Flow Control is disabled, if a packet is received for transmission and no packet
buffer space is available, the incoming packet is discarded.
When Ethernet Flow Control is enabled, flow control is used to throttle the transmission station to
avoid overrunning the transmit buffers. This overrun would cause packets to be dropped. The
throttling mechanism used depends on the interface, and whether it is half- or full-duplex.
Theory of Operation 3–13 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
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3.7.1.3 Half-Duplex Flow Control
In half-duplex mode, the unit uses industry standard backpressure to support flow control:
• When available buffer space is almost gone, the modem causes a collision on the input
port when it senses an incoming pack et . This collision causes the transmitting station to
back off, and retry the transmission.
• The interface will stop causing collisions, as soon as free buffer space becomes
available.
3.7.1.4 Full-Duplex Flow Control
In full-duplex mode, the interface implements IEEE 8802.3x flow control:
• When available buffer space is almost gone, the unit sends out a pause frame with the
maximum pause time, to stop the remote nodes from transmitting.
• The interface sends out another pause frame with the pause time set to zero, as soon as
free buffer space becomes available.
3.7.1.5 Ethernet Daisy Chain
When Ethernet Daisy Chain is disabled, Port 2 on the Ethernet Data Interface operates normally.
Data received on Port 2 that is not addressed to other equipment on the LAN side, is transmitted
over the satellite.
When Port 2 is selected for Daisy Chain, any data received on Port 2 is forwarded to one of the
other LAN side ports (Port 1) and is not transmitted over the satellite. This is useful in a point-tomultipoint configuration, as shown in Figure 3-6.
3.7.1.6 Ethernet Quality of Service (QoS) Type
When Normal QoS is selected, the interface sets a packet’s priority based on these criteria:
• IEEE 803.3ac Tag when present
• IPv4 Type of Service / Differentiated Services Field
• Ipv6 Traffic Class
When Port Based QoS is selected, the interface sets the priority of a packet based on the port on
which it arrived:
• P ort 1 (JS2) has the highest priority
• P ort 2 (JS3) has the second highest priority
3.7.1.7 Ethernet QoS Queue
When Fair Weighted queuing is selected, the interface transmits packets at a rate of 8, 4, 2 and
1, from the highest priority queue to the lowest, respectively. With Fair Weighted queuing, all
queues with data in them are guaranteed to receive some bandwidth.
When Strict Priority is selected, the interface transmits packets from the highest priority queue
until it is empty. It then begins transmitting data from the next highest priority queue. If higher
priority data arrives, the interface finishes the current packet, and then goes back to transmitting
packets from the higher priority queue, until it is empty again. Be careful when selecting Strict
Priority, because it is possible for the lower priority queues to be stalled indefinitely.
Theory of Operation 3–14 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
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3.7.1.8 Set Up the DMD1050TS Ethernet Bridge to Operate Like a FIFO
In certain circumstances, it can be desirable to have the Ethernet interface operate in a FIFO-like
manner, with no reordering of packets. This can be established by using a single port on the
Ethernet interface, and setting the Ethernet QoS Type to Port Based, and the Ethernet QoS
Queue to Strict Priority. W hen set up and used in this manner, the packets are transmitted in the
exact order in which they are received.
Figure 3-6. Point-to-Multipoint with Daisy Chaining
Theory of Operation 3–15 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
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3.7.1.9 Packet Statistics
These statistics are available from the Monitor Menu, when the Ethernet Data Interface is
selected.
• Total Packets: shows the total number of Ethernet packets received from the satellite
• Error Packets: shows the total number of Ethernet packets received from the satellite
that had errors
• Packet Error Rate: shows the Eth er net Packet Error Rate (PER) from the satellite
• Packet Statistics Reset: allows you to reset the Ethernet Total Packets and Ethernet
Error Count by pressing Enter
• Link Status: These statuses are available in the Monitor Menu/Link Status Sub-Menu,
when the Ethernet Data Interface is selected:
o Port 2 Status: shows the current status of LAN Port 1
o Port 3 Status: shows the current status of LAN Port 2
o For each of these ports, the status can have one of these values/meanings:
Down: link is down
Unresolved: cannot agree on connection speed
10 Mbps Half: connected at 10 Base-T Half Duplex
10 Mbps Full: connected at 10 Base-T Full Duplex
100 Mbps Half: connected at 100 Base-T Half Duplex
100 Mbps Full: connected at 100 Base-T Full Duplex
If all LAN Ports are down, a Tx Data Activity Minor Alarm is generated.
If the Wide Area Network (WAN) Port is down, a Tx and Rx Ethernet WAN Major Alarm is
generated.
Theory of Operation 3–16 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
CAUTION: DATA LOSS POSSIBLE
Ethernet data interface causes unwanted network loops and useless results.
Revision 1
3.8 Internal Clock
The time and date are used to time-stamp system events. You can change the time and date via
the Web Browser.
3.9 Loopback Features (Terrestrial & IF)
To run any type of data test with an Ethernet interface, you must use two
modems connected back-to-back. Using the modem’s loopba ck with the
The modem allows for several different loopbacks:
• IF Loopback – Tx IF port is looped back to the Rx IF port
• Tx Terrestrial Loopback - Tx Data port is looped back to the Rx Data port after the
interface driver/receiver (prior to the framing unit)
• Tx Baseband Loopback - Tx Data port is looped back to the Rx Data port after the
interface driver/receiver (after the framing unit)
• Rx Terrestrial Loopback - Receive Data from the satellite is looped back for
retransmission to the satellite, providing a far end loopback (prior to the framing unit)
• Rx Baseband Loopback - Receive Data from the satellite is looped back for
retransmission to the satellite, providing a far end loopback (after the framing unit)
• Tx/Rx Terrestrial Loopback - provides both Terrestrial loopbacks simultaneously
• Tx/Rx Baseband Loopback - provides both Baseband loopbacks simultaneously
See Figure 3-7 through Figure 3-9 for loopback functional block diagrams.
Theory of Operation 3–17 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
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Theory of Operation 3–18 MN-DMD1050TS
Figure 3-7. Loopback Functional Block Diagram
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DMD1050TS Satellite Modem Board
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Figure 3-8. Loopback Functional Block Diagram
Theory of Operation 3–19 MN-DMD1050TS
Figure 3-9. Loopback Functional Block Diagram
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DMD1050TS Satellite Modem Board
SD
TT
Tx CLK
SRC
High Stability
Oscillator
ST
CLOCK &
DATA
EXT REF
EXTERNAL
INTERNAL
SCT CLK
SRC
REF FREQ
SRC
SCT
SCTE
TRANSMIT
RECEIVE
CLOCK & DATA
RECOVERY
SCT
SCTE
RX SAT
RT
RD
SCR
BUFFER CLK
SRC
MODULATION
HIGH STABILITY
DEMODULATION
CLK POL
DATA POLARITY
NORMAL
INVERTED
AUTO
INV. TERR&BASE
INVERT NONE
INV. BASEBAND
INV. TERR DATA
DATA POLARITY
BUFFER CLK POL
NORMAL
INVERTED
INV. TERR&BASE
INVERT NONE
INV. BASEBAND
INV. TERR DATA
Revision 1
3.10 DMD1050TS Clocking Options
The DMD1050TS supports several clocking options that can be recovered from the satellite or the
terrestrial links. The clocking options allow you to decide which clock best fits the application.
Figure 3-10 shows a diagram on how the modem processes the clocks for the Tx Clock source
and the Rx Buffer Clock source. Tx and Rx Clocks can be lock ed independently.
3.10.1 Tx Clock Options
Tx clock options can be recovered from the terrestrial or satellite interf ace, or generated
internally. You can select the SCTE Clock (Terrestrial), or the SCT internal clock. The modem
also allows you to recover the SCT Clock from the satellite (Serial Clock Receive (SCR)), or from
the modem internally. The modem allows you to select clock polarity. The Tx clock selections
available are:
• SCT (Internal Oscillator)
• SCTE (External Tx Terrestrial Clock)
• Rx Satellite Clock
Theory of Operation 3–20 MN-DMD1050TS
Figure 3-10. Clocking and Polarity Diagram
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DMD1050TS Satellite Modem Board
Clock Source
Priority
Rx SAT 1 3
SCTE 2 3
SCT 3 3
Revision 1
3.10.1.1 Serial Clock Transmit External (SCTE)
The SCTE clock is the Transmit Terrestrial Clock associated with the data interface. SCTE is an
external clock received from the terrestrial equipment. The modem uses the terrestrial clock to
lock the internal clock.
Figure 3-10 shows how the Transmit Terrestrial Data enters the modem and is clocked into a
deter FIFO. Data is clocked out of the FIFO by the Modulator Clock. The Modulator Clock and
Phase-Locked Loop (PLL), along with the Dejitt er FIFO , reduce the input jitter. Jitter reduction
exceeds the jitter transfer specified in CCIT T G.821.
SCTE is sometimes referred to as Tx Terrestrial Timing or Terminal Timing. Terminal Timing is a
reference to the RS422 or MIL 188-114A synchronous interfaces.
3.10.1.2 Serial Clock Transmit (SCT)
The SCT clock can be generated internally or recovered from the satellite. The SCT clock source
can be used as the Tx clock source, Rx Buffer Clock source, and the Terrestrial Terminal
equipment for clocking the transmit data. If the SCT clock is recovered from the satellite, then it is
referred to as SCR. SCR is also referred to as Receive Clock, Satellite Clock or Receive Timing
(RT).
When SCT clock is configured as Internal, the frequency of the clock is set the same as the
Transmit Terrestrial Clock rate. If SCT clock is configured as SCR, the internal clock is set to the
same rate as the incoming receive satellite clock. SCT is sometimes referred to as Internal
Timing or Send Timing (ST). If the satellite clock is lost, the modem will switch over to the Internal
Clock automatically, and revert to SCR when ac tivity is detected.
If SCT is selected, then Terrestrial data that is synchronous to the SCT Clock must be supplied
by the modem. The terminal equipment uses the SCT as its clock source. The Autophase Circuit
makes sure that the data is clocked correctly into the modem automatically. A return clock is not
necessary. The Clock Polarity must be set to Auto.
3.10.2 Rx Buffer Clock Options
The DMD1050TS supports several Rx Buffer clock options that can be recovered from the
satellite, from terrestrial links or internally. The clocking options allow you to decide which clock
best fits the application. Figure 3-10 shows how the modem processes the clocks for the Tx Clock
and the Rx Buffer Clock. Tx and Rx Clocks can be locked independently. These Buffer clock
selections are available on the DMD1050TS:
• SCTE (External Tx Terrestrial Clock)
• SCT (Internal Oscillator)
• Rx Satellite Clock
The DMD1050TS handles Rx Buffer clock selections based on sour ce pr ior it y levels . See
Appendix D.
You assign priorities to the clock sources based on source selections. Source 1 has the highest
priority, and Source 3 has the lowest priority. If a fallback clock is selected, and activity is lost at
the highest priority source, the modem will fall back to the next highest priority clock that has
activity. When activity resumes on a higher priority source, the modem resumes using the higher
priority source.
Theory of Operation 3–21 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
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3.10.2.1 Rx SAT Clock
The Rx SAT clock is recovered from the satellite that is received from the distant end. If selected,
the Buffer Clock is locked to the Rx SAT clock.
3.10.2.2 SCTE as Rx Buffer Clock
When SCTE is selected as the Rx Buffer clock, the modem receives the clock from the Transmit
Terrestrial interface.
3.10.2.3 SCT as Rx Buffer Clock
If SCT clock is selected as the Rx Buffer clock source, then it must be configured for Internal.
SCT is sometimes referred to as Internal Timing or Send Timing (ST).
3.10.2.4 External Reference: J9 SMA Female
This is not actually a clock, but does have some clocking implications. When the external
reference is used, the master oscillator in the DMD1050TS is locked to the external reference,
and the internal accuracy and stability of the DMD1050TS assumes that of the External
Reference. Therefore, not only are the transmit frequencies of the DMD1050TS locked to the
external reference, but the modem’s internal SCT Oscillator is locked to the external reference as
well.
3.11 Ethernet Data Interface
The modem supports dual port 10/100 Base T Interface. When selected, the Tx Clock Source
defaults to SCTE, and the Clock Polarity defaults to Normal. In addition, the Buffer Clock defaults
to RxSat, and the Buffer Clock Polarity defaults to Normal. See Appendix C for interface set up
and supporting features.
Theory of Operation 3–22 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
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3.12 Reed-Solomon (R-S) Codec
See Figure 3-11, Figure 3-12 and Table 3-2.
Using a R-S Outer Codec concatenated with a Convolutional Inner Codec is an effective way to
produce very low error rates, even for poor signal-to-noise ratios, while requiring only a small
increase in transmission bandwidth.
Typically, concatenating an R-S Codec requires an increase in transmission bandwidth of only 9
– 12%, while producing a greater than 2 dB improvement in Eb/No. R-S is a block Codec, where
K data bytes are fed into the encoder, which adds 2t = (N – K) check bytes to produce an N byte
R-S block. The R-S decoder can then correct up to “t” erred bytes in the block.
3.12.1 R-S Operation in the DMD1050TS
When the R-S Codec is enabled, data is fed to the R-S Encoding Section of the DMD1050TS,
where it is scrambled, formed into blocks, R-S encoded and interleaved. Uniqu e wor ds are added
so that the blocks can be reformed in the Receiving Modem (See Figure 3-11 and Figure 3-12).
Data is then sent to the modulator, where it is enco ded convolutionally, modulated and
transmitted to the satellite.
When the signal is received and demodulated by the Receiving Modem, it is fed to a Viterbi
Decoder for the first layer of error correction. After error correction is done by the Viterbi Decoder,
the unique words are located and the data is deinterleaved and reformed into blocks. The R-S
Decoder then corrects the leftover errors in each block. The data is then descrambled and output
from the R-S Section.
3.12.2 R-S Code Rate
The Standard R-S Code Rate is defined by (N, K) where N is the total R-S block size in bytes data + check bytes -, and K is the number of data bytes input into the R-S Encoder. The
transmission rate expansion required by the R-S Codec is then defined by N/K. In Closed Net
Mode, the DMD1050TS allows these N and K settings: (126, 112), (219, 201), (194, 178), (225,
205). Table 3-2 shows IBS/IDR compliant modes. Custom R-S rates are available as an option.
3.12.3 Interleaving
The DMD1050TS allows for interleaving depths of 4 or 8 R-S Bl oc ks, so burst errors are spread
over 4 or 8 R-S blocks to enhance the error correction of the R-S Codec. In Closed Network
Mode, set the interleaver depth to 4 or 8 manually. In DVB Network Mode, the DMD1050TS sets
the interleaver depth to 12, automatically.
Figure 3-11. R-S Encoder Functional Block Diagram
Figure 3-12. R-S Decoder Functional Block Diagram
Theory of Operation 3–23 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
Maximum
2
Delay (ms)
64
1536
(126, 112, 7)
(126, 112, 7)
0.125
0.125
4
4
115
5
1544
8448
(225, 205,10)
(194, 178, 8)
0.0976
0.0899
4
4
9
<2
1544
8448
(219, 201, 9)
(219, 201, 9)
0.0896
0.0896
8
8
18
3
DVB
All
(204, 188, 8)
0.0851
12
-
n = code length, k = information symbols and t = symbol error correcting capability.
Design objective.
Revision 1
Table 3-2. R-S Codes
Service Type
Small IDR
(With 16/15
O/H)
IDR
(With 96 Kbps
O/H)
8PSK
1
2
Data Rate
(Kbps)
128
256
384
512
768
1024
2048
6312
2048
6312
R-S Code
(n, k, t) 1
(126, 112, 7)
(126, 112, 7)
(126, 112, 7)
(126, 112, 7)
(126, 112, 7)
(126, 112, 7)
(219, 201, 9)
(194, 178, 8)
(219, 201, 9)
(219, 201, 9)
Bandwidth Expansion
[(n/k) -1 ]
0.125
0.125
0.125
0.125
0.125
0.125
0.0896
0.0899
0.0896
0.0896
Interleaving
Depth
4
4
4
4
4
4
4
4
8
8
R-S Codec
58
29
19
15
10
8
7
2
13
4
Theory of Operation 3–24 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
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3.13 DMD1050TS Automatic Uplink Power Control (AUPC) Operation
The modem has an optional, built-in provision for AUPC. AUPC is useful when operating po wer
levels are affected by environmental changes in the atmosphere. AUPC attempts to adjust local
power output to maintain a constant Eb/No at the receiver location.
The modem supports three versions of AUPC. They include Rad yne AUPC, EF AUPC and Near
Side AUPC. Radyne AU PC and EF AUPC use satellite overhead to send messages between the
local and remote ends of an Single Carrier Per Channel (SCPC) link. The messaging is done with
IBS 1/15 and EF AUPC Framing messages.
Strap Code 26 use can set some of the modem configuration. See Appendix G for an explanation
and tabular listing of available Strap Codes. The Frequency and Modulator Output Power are set
independently of the strap code.
3.13.1 Radyne AUPC
In this case, Target Eb/No is the remote value the local unit wants to maintain by adjusting the
local power level.
The Radyne AUPC can be set to operate on either or both directions of a link, but always requires
a bi-directional channel. Enabling AUPC on one side of the link will activate AUPC on the distant
end of the link. It is necessary that both the Modulator and Demodulator be set to the applicable
framing for AUPC options to be editable and for the AUPC function to operate correctly.
Examples of the basic Radyne AUPC Operations:
• Assume that the two modems, one at each end of the link, are set to Radyne AUPC
operation. Only one direction is discussed, but the same functions can occur in both
directions simultaneously.
• The Local Modem is transmitting to the Remote modem under normal conditions, and the
Remote modem has a receive Eb/No of 7.5 dB. The Local modem has been set to a
Target Eb/No of 7.5 dB with an output po wer le ve l of -15 dBm.
• It starts to rain at the Remote site, and the Eb/No drops to –7.0 dB, then to –6.8 dB. The
Remote Modem is sending update messages of its Eb/No constantly to the Local
modem. When the Local modem sees the drop in the remote Eb/No, it starts to raise the
output power slowly, and continues to adjust, if the remote Eb/No continues to drop. As
the rain increases in intensity, the remote Eb/No decreases, but the Local modem
continues to increase its power level to compensate.
• When the rain decreases, the Local modem sees the remote Eb/No start to increase. The
Local modem lowers its power level.
The operation is a feedback control loop, with the added complication of a significant time
•
delay.
Theory of Operation 3–25 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
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3.13.2 EF AUPC
In this case, Target Eb/No indicates the local unit wants the remote unit to maintain a power level
sufficient to provide the local Eb/No value.
The EF AUPC can be set to operate on either or both directions of a link, but always requires a
bi-directional channel. Enabling AUPC on one side of the link activates AUPC on the distant end
of the link. It is necessary that both the Modulator and Demodulator be set to the applicable
framing for AUPC options to be editable, and for the AUPC function to operate correctly.
Examples of the basic EF AUPC Operations:
• Assume that the two modems, one at each end of the link, are set to AUPC operation.
Only one direction is discussed, but the same functions can occur in both directions
simultaneously.
• The local modem is transmitting to a modem at a remote locale under normal conditions.
The remote modem has a receive Eb/No of 7.5 dB. The local modem has been set with a
Target Eb/No of 7.5 dB, and has a current power output of –15 dBm.
• It starts to rain at the local site, and the Eb/No drops to –7.0 dB, then to –6.8 dB. The
local modem is sending update messages of its Eb/No to the remote modem constantly.
When the remote modem sees the drop in the Eb/No, it begins to raise its output power
slowly, and continues to do so until the Target Eb/No is restored at the local site.
• When the rain decreases, the local modem’s Eb/No starts to increase. The remote
modem lowers its power level to restore the target value.
• The operation is a feedback control loop, with the added complication of a significant time
delay.
3.13.3 Near Side AUPC
The Near Side AUPC is a loop back system that adjusts the broadcast uplink signal when local
conditions change. This is done by having the Near Side AUPC attempt to adjust the outbound
power to compensate for local weather.
The local receiver must be tuned and locked to the transmitter, and then the internal Eb/No is
used for feedback. This creates a Tx-Satellite-Rx control loop.
Near Side AUPC is used primarily for broadcast applications, because the modem cannot expect
to receive data from a distant location. Near Side AUPC can be used with any satellite framing
mode.
There are safeguards built into the AUPC System. First, the modulator has two parameters,
which allow control of the maximum and minimum output power Levels . Second, a nominal, or
default, power level is specified, which takes effect if the receive signal or messaging is lost. This
nominal power must be set to a level high enough to re-establish communications, regardless of
rain fade.
Theory of Operation 3–26 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
Function
AUPC Available Options
Description
DISABLE, NEARSIDE,
NOMINAL
POWER
MINIMUM
POWER
MAXIMIM
POWER
Desired Eb/No of remote modem
power.
TRACKING
RATE
1. The AUPC Menus are located under the Modulator Menu, as shown in Section 4.
2. The EF AUPC Menu shows when EFAUPC Framing is enabled in the Demod and Mod set up menus.
Revision 1
EF AUPC also gives some control over the rate of power change; while Radyne and Near Side
AUPC use optimized rates for rain fade compensation.
Table 3-3. Local AUPC Functions
AUPC MODE
RADYNE, EFDATA
0 TO -25 dB Sets default output power to be used
0 TO -25 dB Sets minimum output power to be used
0 TO -25 dB Sets maximum output power to be
TARGET Eb/No 4.0 TO 16 dB
6.0 to 0.5 dB/MIN Adjustable in .5 dB increments
Enables/Disables the AUPC to function locally
This allows the user to set the desired Eb/No for the local receiver.
RADYNE AUPC: When configured for Radyne AUPC, this setting is
compared against the remote Eb/No and commands to the local
modem to increase or decrease the local transmit power.
EF AUPC: When configured for EF AUPC, this setting is compared
against the local received Eb/No and commands to the remote modem
to increase or decrease transmit power.
NEARSIDE: When configured for NEARSIDE AUPC, this setting is
compared against the received Eb/No of the local modem and
commands to the local modem to increase or decrease transmit
LOCAL CL
ACTION
REMOTE CL
ACTION
Theory of Operation 3–27 MN-DMD1050TS
HOLD, MAXIMUM, NOMINAL
HOLD, MAXIMUM, NOMINAL
Allows user to determine what power setting the remote modem will
use in the event of a carrier loss at the local side.
This setting allows users to determine what local output power setting
to use in the event that the remote end has a carrier loss.
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DMD1050TS Satellite Modem Board
LOOPBACK
Enabled/Disabled
Loop back test over satellite link
Tx 2047 TEST
Revision 1
Table 3-4. Remote AUPC Functions (EF AUPC Only)
Function AUPC Available Options Description
AUPC MODE Disable, EFDATA Enables/Disables the AUPC to function remotely
BER
Enabled/Disabled Initiates 2047 Test pattern Bit Error Rate Test (BERT)
Rx 2047 BER Status Menu Identifies the Bit Error Rate (BER) status on the distant Rx side
AUPC DEF LVL Sets default output power
The Remote AUPC Menus are supported only by EFAUPC
Theory of Operation 3–28 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
Revision 1
3.14 Asynchronous Overhead Operation (J3)
This port is dedicated for ES-ES Communications as well. You can configure the port for several
Asyncronous communications protocols. Protocols s u p por ted ar e Sta ndard IB S E S-ES, Enhancd
Asyncronous and SCC. Overhead data to/from the UIM is routed to/from the framer/deframer.
You can configure this port to support either RS-232 or RS-485 signal levels.
You can select the baud rate and protocol from the Web Browser.
The Asynchronous Framing/Multiplexer is capable of multiplexing a relatively low speed overhead
channel onto the terrestrial data stre am, resulting in a slightly higher combined or aggregate data
rate through the modem. The overhead channel is recovered at the far end. This added channel
is called variously: “An Overhead Channel”, ”Service Channel”, “Async Channel” or, in IESS
terminology, an “ES-to-ES Data Channel.” The basic frame structure used by the multiplexer is
that specified in the IESS-309 Standard, resulting in a 16/15 Aggregate to through-Data Ratio.
IBS 1/15 framing supports two Asnchrounous protocols.
• For Regular Async:
o (ES-to-ES), the Baud Rate is approximately 1/2000 of the Data Rate listed in
Table 3-3.
• For Enhanced Async:
o (Radyne Proprietary Async.), the Baud Rate is selectable, but Data Rate is
limited. See Table 3-3 for differences between Regular and Enhanced Async.
The maximum Baud Rate is 19,200 bps for IBS Async. Two software-controlled modes are
designed into the card to best use the available bits: Standard IBS ES-to-ES and IBS (Enhanced
Async).
The Async Channel can be set under software-control to either RS-232 or RS-485 mode. The pin
assignments for both modes are shown in Table 3-5. The RS-485 setting controls the output into
tri-state, when the modem is not transmitting data, allowing multiple modem outputs to be
connected.
Theory of Operation 3–29 MN-DMD1050TS
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Kbps
Baud Rate Example for Standard IBS
Kbps
Baud Rate Example for Enhanced Mode
128
64
9.6
300
256
128
19.2
600
384
192
32
600
512
256
64
1200
640
320
128
2400
768
384
192
4800
896
448
256
4800
1024
512
320
9600
1152
576
384
9600
1280
640
448
9600
1408
704
512
9600
1536
768
576
9600
1664
832
640
19200
1792
896
704
19200
1920
960
768
19200
1920
960
768
19200
2048
1024
832
19200
896
19200
960
19200
1024
19200
1088
19200
1152
19200
1216
19200
1280
19200
1344
19200
1408
19200
1472
19200
1536
19200
1600
19200
1664
19200
1728
19200
1792
19200
1856
19200
1920
19200
1984
19200
2048
19200
Revision 1
Table 3-5. Pin Assignments
Theory of Operation 3–30 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
This bit is routed directly to the ES-to-ES Data Channel. Its data rate is 1/512th of the
sample an asynchronous data channel.
Bit 2
Frame Alignment
Part of the Frame Alignment word
Bit 3
Backward Alarm
Transmit and Receive, with main processor to activate Main Alarm/LED
Multiframe
Message
Bits 5
and 6
Bits 7
and 8
Encryption
Utilization
Revision 1
3.15 Standard IBS ES-to-ES Mode
In the first, or Normal, mode, all bit assignments are per the IBS standard. The bits of Overhead
Housekeeping byte 32 are used as shown in Table 3-6:
Table 3-6. IBS Standard
Bit 1
Bit 4
ES-to-ES Data
Channel
aggregate rate (or 1/480th of the through terrestrial data rate), and is typically used to super-
As per IBS
Spare Not used
Not used
The ratio of the Through Terrestrial Data Channel Rate to the aggregate rate is 15/16. The
standard transmit and receive channels of the ES-to-ES Data Channel in a Standard IBS Mode
are raw channels operating at the specific bit rate, as controlled by the data channel rate, without
buffering. In addition, no clocks are provided with this channel. Because the data rate provided is
rarely exactly that required for a standard rate device, the only method of communicating using
this channel is to allow it to super-sample the user data.
3.16 Enhanced Asynchronous Mode (Proprietary)
Because many of the frame bits in the standard IBS mode are not used, an Enhanced Multiplexer
Mode can be engaged under software control.
Because this mode changes the use of many of the framed non-data bits, this mode is usable
only when the DMD1050TS is at both ends of a link. In this mode, the overhead signaling bytes
16 and 48 can be used to implement a significantly higher speed ES-to-ES Data Channel under
software control. When implemented, this rate is 16 times that of the normal ES-to-ES IBS mode,
or 1/30
th
of the terrestrial data rate (1/32nd of the aggregate rate).
The IBS 1/15 framing mode MUST be selected for Asynchronous channel operation to be
available.
Theory of Operation 3–31 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
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3.17 Satellite Control Channel (SCC) – J3
The SCC format uses a variable overhead rate to transmit an asynchronous data channel, in
addition to the normal data channel. The SCC asynchronous mode implemented on the DMD20
is Pass Thru Mode.
In Pass Thru Mode, there is no formatting or deformatting of the input data in the buffer, and it is
transmitted on a first-in first-out basis. In-band data entering the remote port is inserted into the
user data stream. The in-band data is received and passed on to the user without any
deformatting or depacketizing. The maximum in-band rate supported is 115200 bps.
The Asynchronous Data Interface (J3) is a 10-pin Dual Row header. The data interface can be
configured for RS232 or RS485 via the Web Browser or Terminal Screen.
3.17.1 SCC Framing Structure
Each SCC frame consists of:
• A 10-bit synchronization pattern called the Synchronizing Word
• Multiple variable length slots filled with user data
• Multiple 10-bit control words that contain eight bits of in-band data (the extra two bits are
for the async start/stop)
The number of user data slots and control words per frame is selected by the SCC Control Ratio
Parameter. This can be any value from 1 to 1, through 1 to 7. A higher ratio allows a lower
overhead rate, but because there are less Sync Words, there is a higher acquisition time.
These examples show control ratios of 1 to 3 and 1 to 1. Example 1 shows three Control Words
for every Synchronizing Word, and Example 2 shows one Control Word for every Synchronizing
Word.
Example 1: 1 to 3 Control Ratio
Theory of Operation 3–32 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
User Data Rate:
1,024,000 bps
In-Band Rate:
19,200 bps
Control Ratio:
1 to 7
Revision 1
Example 2: 1 to 1 Control Ratio
The Control Ratio of the receiving units must match the Control Ratio of the transmitting unit.
3.17.2 Aggregate Data Rate
Aggregate Data Rate = User Data Rate + In-Band Rate + Synchronizing Overhead Rate
Because SCC must adjust the overhead so that there are an equal number of user data bits in
each slot, the synchronizing overhead cannot be calculated easily. However, dividing the In-Band
Rate by the Control Ratio can approximate it. The basic calculation of this rate is shown:
Aggregate Date Rate = User Data Rate + In-Band Rate + (In-Band Rate/Control Ratio)
As an example, given these parameters:
Aggregate data rate = 1,024,000 + 19,200 + (19,200/7) or approximately 1,045,942 (actually
1045974).
This gives an overhead ratio of 1,045,974/1,024,000 = 1.021
Another constraint changes the actual Aggregate Data Rate. The user data slot size is limited to
2,500 bits. Because of this, the modem increases the in-band rate to reduce the user data slot
size. This happens only at higher user data rates.
The Maximum In-Band rate is 115200. The Async interface Rate must be equal or
greater in value.
Theory of Operation 3–33 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
User Data Rate
In-Band Rate
Control Ratio
Aggregate Data Rate
Overhead Ratio
512,000
19,200
1/7
533,974
1.043
1,024,000
19,200
1/7
1,045,974
1.021
2,048,000
19,200
1/7
2,069,951
1.011
3,072,000
19,200
1/7
3,093,943
1.007
4,096,000
19,200
1/7
4,117,951
1.005
6,312,000
19,200
1/7
6,337,248
1.004
6,312,000
19,200
1/3
6,337,606
1.004
6,312,000
19,200
1/1
6,350,418
1.006
Revision 1
3.17.3 Overhead Rate Comparison
The SCC Overhead Ratio varies, depending on the User Data Rate, the In-Band Rate and the
Control Ratio. This gives SCC the advantage of lower overhead rates when compared to IBS,
which has a fixed overhead ratio of 16/15 or 1.067. Table 3-7 gives some examples of SCC
overhead rates for different user data and control ratios.
Table 3-7. SCC Overhead Rates
3.17.4 Actual Overhead Rate Calculation
The modem calculates the minimum in-band rate to limit the size of the user data slots to 2,500
bits. The result is truncated to an integer.
Minimum In-Band = (User Data Rate * Control Ratio)/((Control Ratio + 1) * 250)
Using the larger of Minimum In-Band or the selected In-Band, the modem calculates the number
of bits for each user data slot. The result is truncated to an integer.
Slot Bits = (User Data Rate * (Control Ratio * 10))/(In-band Rate * (Control Ratio + 1))
Slot bits of 0 are invalid.
The ratio the modem uses is actually: Actual Ratio = (Slot Bits + 10)/Slot Bits
Example 1:
User Data Rate: 1,024, 000 bps
In-Band Rate: 19,200 bps
Control Ratio: 1 to 7
Minimum In-Band = (1,024,000 * 7)/((7 + 1) * 250) = 3,584
(less than In-Band Rate)
Slot Bits = (1,024,000 * (7 * 10))/(19,200 * (7 + 1)) = 466
Actual Ratio = (466 + 10)/466 = 1.021
Example 2:
User Data Rate: 6,312, 000 bps
In-Band Rate: 19,200 bps
Control Ratio: 1 to 7
Theory of Operation 3–34 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
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3.17.5 SCC Overhead Channel Setup
1. Set the Framing Mode (located under Mod and Demod Data Menus) to SCC.
After doing this, two new menus show to the right of the Framing Menu, for both the Mod
and Demodulator:
SCC CTL RATIO
SCC INBAND RATE
2. Set the desired SCC control ratio:
SCC CTL RATIO {1/1, 1/2, 1/3, 1/4, 1/5, 1/6, 1/7}
This allows you to simulate the framing used by the Satellite Control Channel Option
(Pass-Thru Mode only). The SCC CTL RATIO is the ratio of overhead in-band data to
synchronizing words.
3. Set the desired SCC in-band rate:
SCC INBAND RATE {300 to 115200}
This allows you to request the rate of in-band data for the overhead channel. This sets
the overhead amount only. The actual amount of data that can be passed through the
overhead channel will be set under ES Baud Rate.
4. Go to Interface > General > Tx ASYNC MODE.
5. Set the desired ES Interface type:
ES INTERFACE {RS-232, RS-485}
This allows you to select the interface type.
6. Set the desired baud rate for the ASYNC Port (J1).
This will be the baud rate that will pass through the overhead channel:
ES BAUD RATE {150 - 115200}
This allows you to select the baud rate of the ASYNC port (J1) in SCC Mode.
7. Set the desired ES BIT S/CHAR:
ES BITS/CHAR {7,8}
This allows you to choose between 7 or 8 bits of data.
8. Go to Interface > General > Rx ASYNC MODE and repeat Steps 5 through 7.
The physical connection to the overhead channel is a 10 pin dual row male header (J1). See
Appendix E for mating connector details.
Theory of Operation 3–35 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
Modem Data Rate
Kbps
SCC Control Channel
Rate
In-Band Overhead Rate
Setting
9.6
1/1
300
6800
9.6
1/2
300
6700
9.6
1/3
300
6667
9.6
1/4
300
6650
9.6
1/5
300
6641
9.6
1/6
300
6634
9.6
1/7
300
6629
9.6
1/1
9600
19200
9.6
1/2
9600
17067
9.6
1/3
9600
15543
9.6
1/4
9600
14400
9.6
1/5
9600
14400
9.6
1/6
9600
14400
9.6
1/7
9600
14400
512
1/1
9600
354165
512
1/2
9600
350948
512
1/3
9600
349867
512
1/4
9600
349346
512
1/5
9600
349201
512
1/6
9600
348802
512
1/7
9600
348658
Revision 1
Table 3-8. SCC Overhead Chart Examples (V iterbi 3 /4 w /V.35 Scramb le r)
Symbol Rate
Theory of Operation 3–36 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
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3.18 EBEM Framing Unit
The DMD1050TS EBEM framing Unit provides the ability to multiplex both Serial (MIL-STD-188114A or High Speed Serial Interface (HSSI)) with Bridged Ethernet payload, overhead and
embedded channel data within the over -the-air transport stream.
3.18.1 EBEM Mode Set Up on the DMD1050TS
When in EBEM Network Spec mode, the Ethernet interface is always active. Therefore, you
cannot select it as the interface type when in EBEM mode. EBEM mode always runs two
interfaces simultaneous ly: the Ethernet interface and one of the serial interfac es (HSSI or
MIL-188-114A).
First, make sure one of the serial interfaces (HSSI or MIL-188-114A) is set as the interface type.
After you enable EBEM as the Network Spec, both the serial inter f ac e and the Eth er net interf ac e
will be active. However, only the serial interface shows for the interface menus. The Ethernet
interface does not show for the interface menus.
When in EBEM mode, the Modulator and Demodulator DATA menus show the ETH RATE. This
is where you set the Ethernet data rate.
There is also a DATA RATE, which is where you set t he seria l inter f ac e data rate.
• Run only Ethernet by setting an ETH RATE and then setting DATA RATE to 0.
• Run only serial by setting a serial rate for DATA RATE and then setting ETH RATE to 0.
• Run Ethernet and serial simultaneously by setting both the serial rate for DATA RATE
and the Ethernet rate for ETH RATE.
The combined Ethernet and serial rates must be within the data rate limits for the configuration in
use (Modulation type, FEC etc.). Chapter 7, Technical Specifications, shows the data rate limits
for the various Mod Cods.
3.18.1.1 Exit EBEM Mode
To change from EBEM mode to another mode, such as closed network mode, you must first have
a serial rate set for DATA RATE. For example, if you were running in EBEM mode but using only
the Ethernet interface (ETH RATE is set but the DATA RATE set to 0), the modem will not let you
exit the EBEM mode until you enter a valid rate for DATA RATE.
3.18.2 DMD1050TS Information Throughput Adpatation (ITA)
Refer to Appendix I for additional information.
3.18.3 Embedded Channel
The embedded channel is used for exchanging messages between DMD1050TS units. ITA,
AUPC and TRANSEC traffic encryption/decryption key negotiation are typical examples of
messages sent through the DMD1050TS embedded channel. The nominal rate of the embedded
channel is 4 kbps.
Theory of Operation 3–37 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
Block Size (Bits)
Total Composite Data Rate
1024
Data Rate =<1024 kbps
4096
1024 kbps < Data Rate < 4096 kbps
16384
Data Rate ≥ 4096 kbps
Revision 1
3.19 STANAG Turbo Coding
The DMD1050TS provides STANAG Turbo coding FEC for all specified baseband data rates (64
kbps to 20.0 Mbps) and modulation formats (BPSK, QPSK, 8-PSK, and 16-APSK) with the
following code rates: None, 1/2, 2/3, 3/4, 7/8, or 19/20. A decoding function for all Turbo encoded
data is also provided.
Turbo codes come extremely close to achieving the absolute maximum channel capacity, in bits
per second, for a given transmit power level. For traffic that can tolerate decoding delay and
require a low BER (i.e., 1×10–10), Turbo coding can be used. For traffic such as speech, where
excessive decoding delays cannot be tolerated and higher BER can be tolerated.
STANAG Turbo Block Sizes
Theory of Operation 3–38 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
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3.20 FIPS TRANSEC Module
The DMD1050TS FIPS Security Module provides bulk encryption and decryption of traffic over
the satellite that conforms to Security Level 2 as defined in FIPS PUB 140-2 using National
Institute of Standards and Technology (NIST) approved 256-bit Advanced Encryption Standard
(AES) encryption. Bulk Encryption includes all data coming from the baseband user ports
(baseband serial port, overhead channel port and the embedded channel). Bulk Decryption
decrypts all of the data coming from the baseband demodulator going to the baseband user ports
and the embedded channel. Bulk Encryption and Bulk Decryption are supported by independent
AES engines, AES keys and counters.
3.20.1 Traffic Encryption and Decryption Keys and Key Generation
The AES key and the initial counter value of the counter are negotiated using the key negotiation
algorithm and messages. The resulting key and initial counter value are then loaded into the AES
engine.
3.20.1.1 Key Agreement
The Encryption application has the responsibility for negotiating the TEKs used on the link. To
accomplish this, the Encryption application utilizes Initiator and Responder roles. The initiator
starts the key agreement protocol with the goal of negotiating a TEK used to encrypt the data
transmitted on the link by the initiator. The responding end responds to the messages in the key
agreement protocol, using the Traffic Decryption Key (TDK) to decrypt the data received on the
link. The Initiator is synonymous with Transmitter (modulator) of a link while Responder is
synonymous with Receiver (demodulator) of the same link.
Theory of Operation 3–39 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
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Theory of Operation 3–40 MN-DMD1050TS
Figure 3-13. Traffic Encryption Key Negotiation
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DMD1050TS Satellite Modem Board
Revision 1
3.20.1.2 Key Agreement Algorithm
The key agreement algorithm used to negotiate a shared secret is the Ephemeral Unified Model,
Elliptic Curve Cryptography Cofactor Diffie-Hellman C(2,0,ECC CDH) as specified in the elliptic
curve parameters section of NIST SP 800-56A(3).
3.20.1.2.1 Key Derivation
Once the shared secret has been negotiated, the TEK is generated from the shared secret using
the Concatenation Key Derivation Function (KDF), as specified in NIST SP 800-56A, Section
5.8.1(3). All hashing algorithms use SHA-512, as defined in FIPS 180-2(4).
Theory of Operation 3–41 MN-DMD1050TS
Figure 3-14. Traffic Decryption Key Negotiation
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DMD1050TS Satellite Modem Board
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3.20.1.3 Accessing Encryption/Decryption Features
The DMD2050E enables the Crypto Officer to administer the FIPs module through authentication.
The Crypto Officer Administrator can:
• Load software
• Load key material
• Configure operating parameters
• Monitor performance
The Crypto Officer Administrator must log in from the front panel or the handheld key loader.
Any operator can Enable and Disable encryption.
Any operator with access to the front panel can zeroize the unit.
To configure the modem for legacy mode operation, first use the front panel to
disable Encryption.
Theory of Operation 3–42 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
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3.21 DMD1050TS ID Codes (Feature Upgrades)
The modem has unique ID codes that allow you to add feature upgrades to the modem without
returning the unit to the factory.
You must use these ID codes when you want additional features added to a unit. After purchase,
Comtech supplies a new ID code that must be entered in the ID code field. Once the new ID code
is entered, the modem activates the new features.
3.22 Strap Codes
The Strap Code is a quick set key that sets many of the modem parameters. For quick setup of
the DMD1050TS, Strap Co des are very helpful. When a Strap Code is entered, the modem is
configured automatically for the code’s corresponding data rate, overhead, code rate, framing,
scrambler type and modulation.
Example of how to set a Strap Code:
1. On the Web interface Modulator Menu, click the Transmit tab.
2. Click General.
3. Find Strap Code.
4. Click inside the box, and go to the New Strap Code submenu.
5. Enter 16.
The DMD1050TS is configured automatically to the parameters for Strap Code 16.
See Appendix G for the Strap Code options.
Theory of Operation 3–43 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
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BLANK PAGE
Theory of Operation 3–44 MN-DMD1050TS
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DMD1050TS Satellite Modem Boar d
Revision 1
Chapter 4. Rear Panel Interface
This section discusses the electrical interfaces on the rear panel. All locations are as seen from
the rear of the unit, un les s s pec if ied otherwise.
4.1 DMD1050TS Connections
All DMD1050TS connections are made to labeled connectors located on the Modem Board.
See Figure 4-1, Figure 4-2, Figure 4-3, and Figure 4-4.
You must use the correct connector to make any connection to the DMD1050TS. See Ap pen dix E
for information about the connectors that are used with the DMD1050TS.
The DMD1050TS consists of these assemblies:
• RF Board (PL-0021834)
• Baseband Modem Board (PL-0022534)
• FIPs Security Module (PL-0000192)
Rear Panel Interface 4–1 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
J3
Pin 1
J3
BUC & LNB
INPUT POWER
J2
SMA
OPT (F)
RX L-BAND
J6
COMPACT
FLASH CARD
J1
SMA
OPT (F)
TX L-BAND
Revision 1
Figure 4-1. DMD1050TS Front View
Rear Panel Interface 4–2 MN-DMD1050TS
Figure 4-2. DMD1050TS Rear View
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DMD1050TS Satellite Modem Board
J10
TWIN RJ45
ETHERNET
DATA
J11
RJ45
M&C
HIGH
STABILITY
OSCILLATOR
J9
SMA
FEMALE
J16
INPUT POWER
24V
J2 SMA
OPT (F)
RX L-BAND
J6
COMPACT
FLASH CARD
J1 SMA
OPT (F)
TX L-BAND
Revision 1
Rear Panel Interface 4–3 MN-DMD1050TS
Figure 4-3. RF Board (PL-0021834)
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DMD1050TS Satellite Modem Board
Revision 1
Figure 4-4. Baseband Modem Board (PL-0022534)
Rear Panel Interface 4–4 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
Pin No.
Signal Name
Signal 1 Ground
GND 2 Ground
GND
3
24 Volts DC
---
4
24 Volts DC
---
Pin No.
Signal Name
Signal
1
LNB DC Input
2
Ground
GND
3
Ground
GND
4
BUC DC Input
MHz
1.0
1.544
2.0
2.048
5.0
10.0
Revision 1
4.2 Compact Flash (J6)
A minimum 256 Mbit flash memory card stores all the modem M&C and operational data. It must
be installed when the modem is operating.
4.3 Power Input (J16)
The Input DC Power for the modem board requires:
• +21 to +24 Volts DC
• 4 Pin Crimp Terminal Housing
• Mfg (Molex) P/N: 26-60-5040
Table 4-1. DC Input Power Ports (J16)
4.4 BUC & LNB Power Input (J3)
The Block Up Converter (BUC) and LNB input connector allows you to inject DC voltage
externally for the BUC and LNB voltage.
• 4 Pin Crimp Terminal Housing
• Mfg (Molex) P/N: 26-60-5040
Table 4-2. BUC & LNB DC Input Connector (J3)
4.5 Modem Connections (Standard)
4.5.1 EXT REF (J9)
The External Reference Port is a 50 Ohm Female SMA Connector. It accepts these frequencies:
Input Level: 0.1 Vp-p to 5 Vp-p (Sine or Squar e wave)
Rear Panel Interface 4–5 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
Pin No.
Signal Name
Signal
Direction
1
RX_ASYNC_B
485/RXD_B
Output
2
RX_ASYNC_A
485/RXD_A
Output
3
TX_ASYNC_B
485/TXD_B
Input 4 TX_ASYNC_A
485/TXD_A
Input 5 RX_RLLP_B
485/CTS
Input 6 RX_RLLP_A
485-A_232
Input 7 TX_RLLP_B
485-B
Output 8 TX_RLLP_A
485-A_232
Output
9
Ground
GND
---
10
No Connect
---
---
Revision 1
4.5.2 TX L-Band IF (J1)
The Transmit IF Output Port is a 50 Ohm SMA Female Connector that is used for L-Band IF.
The power level is programmable from 0 to -25 dBm, in 0.1 dBm steps.
The IF Frequency is programmable from 950 to 2050 MHz, in 1 Hz Steps.
4.5.3 RX L-Band IF (J2)
The Receive IF Input Port is a 50 Ohm SMA Female Connector that is used for L-Band IF.
The IF Frequency is programmable from 950 to 2050 MHz, in 1 Hz Steps.
4.5.4 ASYNC & Remote Port (J3) – 10-Pin Dual Row Header
This port supports both Asynchronous and Remote interfaces. The remote port supports RS485
or RS232. This port is a 10-pin dual row header.
• 10-Pin Dual Row
• Mfg (Samtec) P/N: TSW-1-05-7-G-D
Table 4-3. ASYNC & Remote Ports (J3)
4.5.5 Default/Shorting Plug (JP1 JP2) - 3 Pin Male Connector
If you are having difficulty opening the Web Browser or the Terminal Interface, you can
reset the M&C interface settings. Use the supplied default plug (CNRSHUNT). See
Figure 4-5.
1. Install the default plug across pins 1 and 2 of JP1 and JP2 connectors.
2. Cycle the power.
3. The interface default settings will reset.
Default jumper/shunts are with the supplied connector kit. The default jumper might be installed
between pins 2 and 3.
1. Reposition the jumper across pins 1 & 2.
2. After the default settings have been activated, remove the Jumpers.
Rear Panel Interface 4–6 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
Install Shunt/Jumper Between Pins No.
Pin 1 & 2
Revision 1
Table 4-4. Default/Reset connections: 3-Pin male Connector (JP1 & JP2)
Rear Panel Interface 4–7 MN-DMD1050TS
Figure 4-5. Default/Shorting Plug (JP1 and JP2)
Page 84
DMD1050TS Satellite Modem Board
Pin No.
Signal Name
Signal
Direction
1
Ground
---
--- 2 Send Data B (+)
SD-B
Input 3 Send Data A (-)
SD-A
Input
4
Send Timing A (-)
ST-A
Output
5
Receive Data A (-)
RD-A
Output
6
Receive Data B (+)
RD-B
Output
7
Request To Send A (-)
RS-A
Input
8
Receive Timing A (-)
RT-A
Output
9
Clear To Send A (-)
CS-A
Output
10
Modulator Fault - Open Collector
MF
Output
11
Data Mode A (-)
DM-A
Output
12
Request To Send B (+)
RS-B
Input
13
Ground
GND
---
14
Data Terminal Ready A (-)
TR-A
Input
15
Receiver Ready A (-)
RR-A
Output
16
Demodulator Fault
DF
Output
17
Receive Timing B (+)
RT-B
Output
18
Data Mode B (+)
DM-B
Output
19
Receiver Ready B (+)
RR-B
Output
20
Data Terminal Ready B (+)
TR-B
Input
21
Terminal Timing B (+)
TT-B
Input
22
Terminal Timing A (-)
TT-A
Input
23
Send Timing B (+)
ST-B
Output
24
Antenna AGC
---
Output
25
Clear T Send B (+)
CS-B
Output
26
No Connect
---
---
Revision 1
4.5.6 MIL-188-114A (J4)
The MIL-188-114A port is an RS422 interfac e.
• 26-Pin Dual Row Male Header
• Mfg (Samtec) P/N: TSW-1-13-7-G-D
Table 4-5. MIL-188-114A Port (RS-422) 26-Pin Dual Row Header (J2)
4.5.7 Ethernet M&C (J11)
The Ethernet M&C Port is a 10 Base-T Interface. J9 is used for the M&C functions of the unit. The
physical interface is a standard female RJ-45 connector.
4.5.8 Ethernet Data Interface (J10)
The DMD1050TS Ethernet Data Interface provides two RJ-45, Auto-Crossover and AutoSensing, 10/100 Ethernet Data Por ts . The physical interfaces are twin female RJ-45 connectors.
Rear Panel Interface 4–8 MN-DMD1050TS
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DMD1050TS Satellite Modem Board
Pin No.
Signal Name
Signal
Direction
with 54 ohm load
2
Ground
---
---
analog interface)
Pin No.
Signal Name
Signal
Direction
per EIA-422 Specification.
2
Ground
---
---
3
Antenna Handover Control A
ANT_HOC_B
Same as Pin 1
Revision 1
4.5.9 DS-101 Simple Key Loader (J17)
The DMD1050TS Simple Key Loader (SKL) Interface J17 can be used to connect an SKL
AN/PYQ-10 Electronic Key Management System (EKMS) key management device.
The physical interface is a 3-Pin Male Header Mfg (FCI) P/N: 68771-203HLF.
Table 4-6. DS-101 Simple Key Loader (J17)
1 Data I/O (+)
(Balanced Differential input or output
analog interface)
3 Data I/O (-)
(Balanced Differential input or output
4.5.10 Antenna Handover (J18)
Future Option
The physical interface is a 3-Pin Male Header Mfg (FCI) P/N: 68771-203HLF.
Table 4-7. Antenna Handover (J18)
KEYLOAD_A Input / Output
Input:
(Per EIA-485 Specification)
Sensitivity: VThH =-1.6V,
VThL =+1.6V,
Min. Input Resistance
1.73K
Output:
(Per EIA-485 Specification)
VOUT = +(1.5V to 5.0V)
KEYLOAD_B Same as Pin 1
1 Antenna Handover Control A ANT_HOC_A Input
Rear Panel Interface 4–9 MN-DMD1050TS
Input: Voltage and levels
Page 86
DMD1050TS Satellite Modem Board
Revision 1
BLANK PAGE
Rear Panel Interface 4–10 MN-DMD1050TS
Page 87
DMD1050TS Satellite Modem Board
WARNING - DANGER OF EXPLOSION – LITHIUM BATTERY
This unit contains a lithium battery. You must replace the lithium battery with the same
or equivalent battery that is recommended by the manufacturer. You must dispose of
used batteries as required by local and national regulations.
static discharge that can cause damage to the Modem Board.
SYMPTOM
POSSIBLE CAUSE
The Modem does not acquire the incoming
Incorrect receive input to the modem
Receive Carrier Level is too low
Receive Carrier Frequency is outside of the acquisition range
Transmit Carrier is incompatible
Modem is in Test Mode
The Async Port is not configured correctly.
Switches are set incorrectly
Revision 1
Chapter 5. Maintenance and
Troubleshooting
Make sure to prevent
5.1 Periodic Maintenance
The DMD1050TS does not require periodic maintenance.
5.2 Troubleshooting
First, examine all interface signals for correct operation. If a unit is suspected of a defect in field
operations after that, replace the unit with another known working DMD1050TS. If a problem still
exists, examine the wiring or power.
Table 5-1 is a brief list of problems that can be caused by failures of the modem, or by incorrect
setup or configuration for the type of service.
Table 5-1. Symptoms and Possible Causes
carrier.
Maintenance and Troubleshooting 5–1 MN-DMD1050TS
Page 88
DMD1050TS Satellite Modem Board
Alarm
Possible Cause
FPGA CFG
Shows a transmit FPGA hardware failure
DSP CFG
Shows a transmit FPGA failure
SCT Clock PLL
Shows that the Tx SCT Clock PLL is not locked. This alarm flashes during certain
parameter changes. A steady display shows a problem in the modem configuration.
SYM Clock PLL
Shows that the Tx Symbol Clock PLL is not locked. This alarm flashes during certain
modem (SCTE).
LB Synth
PLL
Shows that the Tx L-Band Synthesizer is not locked. This alarm flashes during certain
parameter changes. A steady display shows a configuration problem in the modem.
Ethernet WAN
Shows that the WAN Port is down
TRANSEC Ready
Shows that the TRANSEC Security Module has not indicated it is ready for data
Alarm
Possible Cause
FPGA CFG
Shows a receive FPGA hardware failure
DSP CFG
Shows a receive DSP failure
SIGNAL LOCK
Shows that the demod is unable to lock to a signal
FRAME LOCK
Shows that the Framing Unit is unable to find the expected framing pattern
MULTIFRAME LOCK
Shows that the Framing Unit is unable to find the expected framing pattern
LB SYNTH PLL
Shows that the Rx L-Band Synthesizer is not locked. This alarm flashes during certain
parameter changes. A steady display shows a problem in the modem configuration.
Ethernet WAN
Shows that the WAN Port is down
Alarm
Possible Cause
TERR CLK ACT
Shows no Terrestrial Clock activity
TERR DATA ACT
Shows no Tx Data activity
TX TERR AIS
Shows that AIS has been detected in the Tx Data Stream
TX DVB FRAME
Shows that the Tx Input Data Stream Framing does not match the selected Tx Terr
exists.
Clock Src Fallback
Shows the SCTE clock has fallen back to internal SCT
TPC Conflict Chk
Shows there is a TPC mismatch
Revision 1
5.2.1 Alarm Faults
5.2.1.1 Major Tx Alarms
parameter changes. A steady display shows a problem with the incoming clock to the
5.2.1.2 Major Rx Alarms
5.2.1.3 Minor Tx Alarms
LOCK
Maintenance and Troubleshooting 5–2 MN-DMD1050TS
Framing. Incorrect Tx Terr Framing is selected. Incorrectly framed Tx Input Data Stream
Page 89
DMD1050TS Satellite Modem Board
Alarm
Possible Cause
BUFF UNDERFLOW
Shows that a Doppler Buffer underflow has occurred
BUFF NEAR EMPTY
Shows that the Doppler Buffer is about to underflow
BUFF NEAR FULL
Shows that the Doppler Buffer is about to overflow
BUFF OVERFLOW
Shows that a Doppler Buffer overflow has occurred
RX DATA ACTIVITY
Shows that there is no Rx Data activity; for the Ethernet Interface, shows that no Ethernet
port is active (no cable is connected)
SAT AIS
Shows that AIS has been detected in the receive satellite data stream
IFEC LOCK
Shows that the Inner Codec is not locked
TPC Conflict Chk
Shows there is a TPC mismatch
OFEC LOCK
Shows that the Reed-Solomon Decoder is not locked
INTERLEAVER
Shows that the Reed-Solomon Interleaver is not synchronized
EBNO (dB)
Shows that the Eb/No is outside of limits
IBS BER
Shows that there are more than one in 1000 bits in error in IBS mode
RX DVB FRAME
LOCK
Shows that the Rx Satellite Data Stream Framing is not DVB
Encryption
TRANSEC Module is enabled but not synchronized
Alarm
Possible Cause
TERR FPGA CFG
Shows an Interface Card FPGA configuration failure, likely caused by a missing or incorrect
file
CODEC FPGA CFG
Shows Turbo Codec Card FPGA configuration failure, likely caused by a missing or incorrect
file
CODEC Dev CFG
Shows Turbo Codec ASIC failed to program
+1.5V RX SUPPLY
Shows the measured voltage of the 1.5 Volt Rx power bus inside the modem
+1.5V TX SUPPLY
Shows the measured voltage of the 1.5 Volt Tx power bus inside the modem
+3.3V SUPPLY
Shows the measured voltage of the +3.3 Volt power bus inside the modem
+5V SUPPLY
Shows the measured voltage of the +5 Volt power bus inside the modem
+12V SUPPLY
Shows the measured voltage of the +12 Volt power bus inside the modem
-12V SUPPLY
Shows the measured voltage of the -12 Volt power bus inside the modem
+20V SUPPLY
Shows the measured voltage of the +20 Volt power bus inside the modem
EXT CLOCK ACT
Shows that the External Clock is not active
EXT REF ACT
Shows no activity on the External Reference
EXT REF LOCK
Shows that the External Reference PLL is not locked
Transec Pwr Test
Shows the TRANSEC module has failed POST (Power-On Self Test)
Revision 1
5.2.1.4 Minor Rx Alarms
5.2.1.5 Common Major Alarms
Maintenance and Troubleshooting 5–3 MN-DMD1050TS
Page 90
DMD1050TS Satellite Modem Board
Revision 1
5.2.2 Alarm Masks
CAUTION: DATA LOSS POSSIBLE
Masked alarms can cause undesirable modem performance.
The DMD1050TS does a high degree of self-monitoring and fault isolation. The alarms for these
faults are separated into categories:
• Active Alarms
• Common Equipment Faults
Alarms recorded in the event buffer are the same as those in the alarm buffer.
You can mask certain alarms. When an alarm is masked, the Fault Relays are not asserted, but
the Alarm is shown. This feature is very helpful during debugging, or to lock out a known failure.
5.2.2.1 Active A larms
5.2.2.1.1 Major Alarms
Major Alarms mean a modem hardware failure. Major Alarms can flash briefly during modem
configuration changes and during power-up, but should not stay lit. Alarms are grouped into
Transmit and Receive Alarms. Transmit and Receive alarms are completely independent.
5.2.2.1.2 Minor Alarms
Minor Alarms mean that a problem can persist outside the modem, such as loss of Terrestrial
Clock, loss of terrestrial data activity, or a detected transmit or receive AIS condition.
Alarms are grouped into Transmit and Receive Alarms. Transmit and Receive alarms are
completely independent.
5.2.2.2 Common Equipment Faults
Common equipment faults mean hardware or configuration problems in the modem that affect
both transmit and receive operation. Most common faults mean a hardware failure in the modem,
such as a bad power supply. Common faults for the External Reference and External Clock
mean a bad modem configuration, not a hardware failure.
5.2.2.3 Latched Alarms
Latched Alarms are used to catch intermittent failures. If a fault occurs, the fault indication is
latched, even if the alarm goes away. After the modem is configured and running, it is
recommended that you clear the Latched Alarms as a final step.
Maintenance and Troubleshooting 5–4 MN-DMD1050TS
Page 91
DMD1050TS Satellite Modem Board
Non-EBEM Modes
Modulation
Code Rate
Min Data Rate (Kbps)
Max Data Rate (Mbps)
BPSK
Uncoded
4.8
10.0
BPSK
5/16
2.4
3.125
BPSK
21/44
2.4
4.773
BPSK
1/2
2.4
5.0
BPSK
3/4
3.6
7.5
BPSK
7/8
4.2
8.75
QPSK
Uncoded
9.6
20.0
QPSK
21/44
4.8
9.545
QPSK
1/2
4.8
10.0
QPSK
2/3
6.4
13.333
QPSK
3/4
7.2
15.0
QPSK
7/8
8.4
17.5
OQPSK
21/44
4.8
9.545
OQPSK
1/2
4.8
10.0
OQPSK
2/3
6.4
13.333
OQPSK
3/4
7.2
15.0
OQPSK
7/8
8.4
17.5
8PSK
2/3
9.6
20.0
8PSK
3/4
10.8
20.0
8PSK
7/8
14.4
20.0
8QAM
2/3
9.6
20.0
8QAM
3/4
10.8
20.0
8QAM
7/8
14.4
20.0
16QAM
3/4
14.4
20.0
16QAM
7/8
16.84
20.0
Revision 1
Chapter 6. Technical
Specifications
6.1 Data Rates Limits
6.1.1 Non-EBEM Modes
Technical Specifications 6–1 MN-DMD1050TS
Page 92
DMD1050TS Satellite Modem Board
EBEM Modes
Modulation
Code Rate
Min Data Rate (Kbps)
Max Data Rate (Mbps)
BPSK
1/2
64
4.9651
BPSK
2/3
64
6.6141
BPSK
3/4
64
7.4361
BPSK
7/8
64
8.6731
BPSK
19/20
64
9.4121
QPSK
1/2
64
9.9051
QPSK
2/3
64
13.1801
QPSK
3/4
64
14.8111
QPSK
7/8
64
17.2531
QPSK
19/20
64
18.7161
8PSK
1/2
256
14.8111
8PSK
2/3
256
19.6911
8PSK
3/4
256
22.1191
8PSK
7/8
256
25.7461
8PSK
19/20
256
27.9111
16APSK
1/2
256
19.6911
16APSK
2/3
256
26.1501
16APSK
3/4
256
29.3561
16APSK
7/8
256
34.1451
16APSK
19/20
256
37.0081
Non-DVB Modes
Modulation
Code Rate
Min Data Rate
Max Data Rate
BPSK
NONE
4800
10000000
BPSK
VIT 1/2
2400
5000000
BPSK
VIT 3/4
3600
7500000
BPSK
VIT 7/8
4200
8750000
BPSK
SEQ 1/2
2400
2048000
BPSK
SEQ 3/4
3600
2048000
BPSK
SEQ 7/8
4200
2048000
BPSK
TPC 5/16
2400
3125000
BPSK
TPC 21/44
2400
4772727
BPSK
TPC 3/4
3600
7500000
BPSK
TPC 7/8
4200
8750000
BPSK
LDPC 1/2
2400
5000000
BPSK
EBEM TURBO 1/2
64000
4965315
BPSK
EBEM TURBO 2/3
64000
6613713
Revision 1
6.1.2 EBEM Modes
6.1.3 Non-DVB Modes
1
Max STAMAG rates reflect the maximum user payload with th embedded channel ENABLED.
This is either Ethernet or Mixed Mode with the serial MIL-STD-188-114A and is limited to 20 Mbps.
Technical Specifications 6–2 MN-DMD1050TS
Page 93
DMD1050TS Satellite Modem Board
Non-DVB Modes
Modulation
Code Rate
Min Data Rate
Max Data Rate
BPSK
EBEM TURBO 3/4
64000
7436434
BPSK
EBEM TURBO 7/8
64000
8673111
BPSK
EBEM TURBO 19/20
64000
9412035
QPSK
NONE
9600
20000000
QPSK
VIT 1/2
4800
10000000
QPSK
VIT 3/4
7200
15000000
QPSK
VIT 7/8
8400
17500000
QPSK
SEQ 1/2
4800
2048000
QPSK
SEQ 3/4
7200
2048000
QPSK
SEQ 7/8
8400
2048000
QPSK
TPC 21/44
4582
9545454
QPSK
TPC 3/4
7200
15000000
QPSK
TPC 7/8
8400
17500000
QPSK
LDPC 1/2
4800
10000000
QPSK
LDPC 2/3
6400
13333333
QPSK
LDPC 3/4
7200
15000000
QPSK
EBEM TURBO 1/2
64000
9905362
QPSK
EBEM TURBO 2/3
64000
13180497
QPSK
EBEM TURBO 3/4
64000
14811320
QPSK
EBEM TURBO 7/8
64000
17252747
QPSK
EBEM TURBO 19/20
64000
18716185
OQPSK
NONE
9600
20000000
OQPSK
VIT 1/2
4800
10000000
OQPSK
VIT 3/4
7200
15000000
OQPSK
VIT 7/8
8400
17500000
OQPSK
SEQ 1/2
4800
2048000
OQPSK
SEQ 3/4
7200
2048000
OQPSK
SEQ 7/8
8400
2048000
OQPSK
TPC 21/44
4582
9545454
OQPSK
TPC 3/4
7200
15000000
OQPSK
TPC 7/8
8400
17500000
OQPSK
LDPC 1/2
4800
10000000
OQPSK
LDPC 2/3
6400
13333333
OQPSK
LDPC 3/4
7200
15000000
8PSK
TRE 2/3
9600
20000000
8PSK
TPC 3/4
10800
20000000
8PSK
TPC 7/8
12600
20000000
8PSK
LDPC 2/3
9600
20000000
8PSK
LDPC 3/4
10800
20000000
8PSK
EBEM TURBO 1/2
256000
14811320
8PSK
EBEM TURBO 2/3
256000
19691268
8PSK
EBEM TURBO 3/4
256000
22118667
8PSK
EBEM TURBO 7/8
256000
25745821
8PSK
EBEM TURBO 19/20
256000
27911111
Revision 1
Technical Specifications 6–3 MN-DMD1050TS
Page 94
DMD1050TS Satellite Modem Board
Non-DVB Modes
Modulation
Code Rate
Min Data Rate
Max Data Rate
8QAM
TPC 3/4
10800
20000000
8QAM
TPC 7/8
12600
20000000
8QAM
LDPC 2/3
9600
20000000
8QAM
LDPC 3/4
10800
20000000
16QAM
VIT 3/4
14400
20000000
16QAM
VIT 7/8
16800
20000000
16QAM
TPC 3/4
14400
20000000
16QAM
TPC 7/8
16840
20000000
16QAM
LDPC 3/4
14400
20000000
16APSK
EBEM TURBO 1/2
256000
19691268
16APSK
EBEM TURBO 2/3
256000
26149903
16APSK
EBEM TURBO 3/4
256000
29356346
16APSK
EBEM TURBO 7/8
256000
34144709
16APSK
EBEM TURBO 19/20
256000
37008159
187 Mode
Modulation
Code Rate
Min Data Rate
Max Data Rate
BPSK
VIT 1/2
2400
4583333
BPSK
VIT 2/3
2934
6111111
BPSK
VIT 3/4
3300
6875000
BPSK
VIT 5/6
3667
7638888
BPSK
VIT 7/8
3850
8020833
QPSK
VIT 1/2
4400
9166666
QPSK
VIT 2/3
5867
12222222
QPSK
VIT 3/4
6600
13750000
QPSK
VIT 5/6
7334
15277777
QPSK
VIT 7/8
7700
16041666
8PSK
TRE 2/3
8800
18333333
8PSK
TRE 5/6
11000
20000000
8PSK
TRE 8/9
11550
20000000
16QAM
TRE 3/4
13200
20000000
16QAM
TRE 7/8
15400
20000000
Revision 1
6.1.4 DVB Modes
Technical Specifications 6–4 MN-DMD1050TS
Page 95
DMD1050TS Satellite Modem Board
188 Mode
Modulation
Code Rate
Min Data Rate
Max Data Rate
BPSK
VIT 1/2
2400
4607843
BPSK
VIT 2/3
2950
6143790
BPSK
VIT 3/4
3318
6911764
BPSK
VIT 5/6
3687
7679738
BPSK
VIT 7/8
3871
8063725
QPSK
VIT 1/2
4424
9215686
QPSK
VIT 2/3
5899
12287581
QPSK
VIT 3/4
6636
13823529
QPSK
VIT 5/6
7373
15359476
QPSK
VIT 7/8
7742
16127450
8PSK
TRE 2/3
8848
18431372
8PSK
TRE 5/6
11059
20000000
8PSK
TRE 8/9
11797
20000000
16QAM
TRE 3/4
13271
20000000
16QAM
TRE 7/8
15483
20000000
204 Mode
Modulation
Code Rate
Min Data Rate
Max Data Rate
BPSK
VIT 1/2
2400
5000000
BPSK
VIT 2/3
3200
6666666
BPSK
VIT 3/4
3600
7500000
BPSK
VIT 5/6
4000
8333333
BPSK
VIT 7/8
4200
8750000
QPSK
VIT 1/2
4800
10000000
QPSK
VIT 2/3
6400
13333333
QPSK
VIT 3/4
7200
15000000
QPSK
VIT 5/6
8000
16666666
QPSK
VIT 7/8
8400
17500000
8PSK
TRE 2/3
9600
20000000
8PSK
TRE 5/6
12000
20000000
8PSK
TRE 8/9
12800
20000000
16QAM
TRE 3/4
14400
20000000
16QAM
TRE 7/8
16800
20000000
Revision 1
Technical Specifications 6–5 MN-DMD1050TS
Page 96
DMD1050TS Satellite Modem Board
Modulation
BPSK, QPSK, an d OQPSK, 8PSK, 8QAM,
16QAM,16APSK
L-Band Tuning
Range
Impedance
SMA, 50 Ohm or F-Type 75 Ohm (Optional)
Connector
SMA, or F-Type (Optional)
Return Loss
SMA 2.0:1
Output Power
0 to -25 dB
Output Stability
L-Band, ±1.0 dB Over Frequency and Temperature
Output
Spectrum
Spurious
-55 dBc In-Band
-45 dBc Out-of-Band
On/Off Power
Ratio
Scrambler
OM-73, CCITT V.35 or IBS
FEC
Viterbi, K = 7 at 1/2, 3/4 and 7/8
2/3 Rate Trellis
Turbo Product Code (Optional)
BPSK 5/16, 21/44
QPSK/OQPSK 21/44, 3/4, 7/8
8PSK/8QAM/16QAM 3/4, 7/8
Low Density Parity Check (Optional)
BPSK 1/2
QPSK/OQPSK 1/2, 2/3, 3/4
8PSK/8QAM 2/3, 3/4
16QAM 3/4
EBEM (Optional)
BPSK 1/2, 2/3, 3/4, 7/8, 19/20
QPSK 1/2, 2/3, 3/4, 7/8, 19/20
8PSK 1/2, 2/3, 3/4, 7/8, 19/20
16APSK 1/2, 2/3, 3/4, 7/8, 19/20
Outer Encoder
Options
Reed-Solomon INTELSAT (DVB Optional)
Custom (N, K) Reed-Solomon
Spread
Spectrum
Data Clock
Source
High Stability
+/- 5 x 10-8
Revision 1
6.2 Modulator
950 to 2050 MHz in 1 Hz Steps
Selectable and Meets MIL-188-165A or IESS 308/309/ 310 Power Spectral Mask
>60 dB
Direct Sequence x2, x4, x8, and x16 (Optional with LDPC)
Internal, External, Rx Recovered
Technical Specifications 6–6 MN-DMD1050TS
Page 97
DMD1050TS Satellite Modem Board
Demodulation
BPSK, QPSK, an d OQPSK, 8PSK, 8QAM, 16QAM,
16APSK
IF Tuning
Range
Impedance
SMA, 50 Ohm, F-Type 75 Ohm (Optional)
Connector
SMA, F-Type (Optional)
Return Loss
SMA 2.0:1
Spectrum
Selectable and Meets MIL-188-165A or INTELSAT IESS
308/309/310 Compliant
Input Level
-55 to +10 dBm and 10 log (Symbol Rate) -120 dBm / Hz,
SR < 2500 k
Total Input
Power
FEC
Viterbi, K = 7 at 1/2, 3/4 and 7/8 Rate,
Rate Sequential 1/2, 3/4 and 7/8 (Optional)
Trellis 2/3
Turbo Product Code (Optional)
BPSK 5/16, 21/44
QPSK/OQPSK 21/44, 3/4, 7/8
8PSK/8QAM/16QAM 3/4, 7/8
Low Density Parity Check (Optional)
BPSK ½
QPSK/OQPSK 1/2, 2/3, 3/4
8PSK/8QAM 2/3, ¾
16QAM 3/4
EBEM (Optional)
BPSK 1/2, 2/3, 3/4, 7/8, 19/20
QPSK 1/2, 2/3, 3/4, 7/8, 19/20
8PSK 1/2, 2/3, 3/4, 7/8, 19/20
16APSK 1/2, 2/3, 3/4, 7/8, 19/20
Decoder
Reed-Solomon INTELSAT (DVB Optional)
Custom (N, K) Reed-Solomon
Descrambler
OM-73, CCITT V.35 or IBS
Acquisition
Range
Reacquisition
Range
Sweep Delay
Value
Revision 1
6.3 Demodulator
L-Band Tuning Range 950 to 2050 MHz in 1 Hz Steps
+20 dBm or +40 dBc (the Lesser)
Options
Programmable ±1 kHz to ± 255 kHz
Programmable ±1 Hz to 25000 Hz
0 to 6000 seconds in 100 msec Steps
Technical Specifications 6–7 MN-DMD1050TS
Page 98
DMD1050TS Satellite Modem Board
Size
0 msec to 64 msec
Centering
Automatic on Underflow/Overflow
Centering Modes
IBS: Integral Number of Frames
IDR: Integral Number of Multi-Frames
Clock
External, Rx Recovered or SCT (Internal)
MIL-188-114A
All Rates, Differential, Clock/Data, DCE
Ethernet 2 Port 10/100
Base-T
Two RJ-45, Auto-Crossover, Auto-Sensing,
10/100 Ethernet
Data Ports. Complies with IEEE
802.3 and IEEE 802.3u.
Prime Power
+21 to +24.5 Volts DC
Operating
Temperature
0 to +60°C (+32 to +140°F), 95% Humidity, Non-Condensing
Storage Temperature
-20 to 70°C (-4 to 158°F), 99% humidity, Non-Condensing
Size
1.442” x 6.675” x 9.125” 6.675” W x 10.3 D x 1.442” H / (17.78 x 23.12 x 2.54 cm)
Weight
3.71 Pounds (1.68 Kg)
Revision 1
6.4 Plesiochronous Buffer
6.5 Monitor and Control
Ethernet 10/100 Base-T/Web Browser/SNMP, Remote RS-485/Terminal RS-232.
6.6 Terrestrial Interfaces
6.7 Environmental
6.8 Physical
Technical Specifications 6–8 MN-DMD1050TS
Page 99
1E-9
1E-8
1E-7
1E-6
1E-5
1E-4
1E-3
1E-2
1E-1
0 1 2 3 4 5 6 7 8 9 10 11 12
BER
Eb/No in dB
Viterbi Decoder
Speci ficati on 1/2
Rate
Speci ficati on 3/4
Rate
Speci ficati on 7/8
Rate
Typical
Performance
B/O/QPSK Uncoded Theory
DMD1050TS Satellite Modem Board
Revision 1
6.9 BER Specifications
6.9.1 BER Performance (Viterbi)
Figure 6-1. B/0/QPSK BER Performance (Viterbi)
Note: Eb/No values include the effect of using differential decoding and v.35 descrambling.
Technical Specifications 6–9 MN-DMD1050TS
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1E-9
1E-8
1E-7
1E-6
1E-5
1E-4
1E-3
1E-2
1E-1
0 1 2 3 4 5 6 7 8 9 10 11 12
BER
Eb/No in dB
Sequential
Decoder
Specification
1/2 Rate
Specification
3/4 Rate
Specification
7/8 Rate
Typical
Performance
B/O/QPSK Uncoded Theory
DMD1050TS Satellite Modem Board
Revision 1
6.9.2 BER Performance (Sequential)
Figure 6-2. B/0/QPSK BER Performance (Sequential)
Note: Eb/No values include the effect of using differential decoding and v.35 descrambling.
Technical Specifications 6–10 MN-DMD1050TS
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