CDM-425
Advanced Satellite Modem (18 kbps – 25 Mbps)
Installation and Operation Manual
For Firmware Version 1.1.1 or higher
Part Number MN-CDM-425
Revision 0
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.
CDM-425 Advanced Satellite Modem
Revision 0
Copyright © 2017 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
Rev Date Description
0 Oct 2017 Initial Release.
MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
TABLE OF CONTENTS
PREFACE ................................................................................................................................................. XXI
About this Manual .................................................................................................................................... xxi
Conventions and References.................................................................................................................. xxi
Patents and Trademarks ......................................................................................................................... xxi
Warnings, Cautions, and Notes .............................................................................................................. xxi
Recommended Standard Designations ................................................................................................. xxii
Safety and Compliance ........................................................................................................................... xxii
Electrical Safety and Complianc e .......................................................................................................... xxii
Grounding............................................................................................................................................... xxii
Electrical Installation ............................................................................................................................. xxiii
Battery .................................................................................................................................................. xxiii
Fuses .................................................................................................................................................. xxiii
Operating Environm ent ......................................................................................................................... xxiv
European Union Radio Equipment and Telecommunications Terminal Equipment (R&TTE) Directive
(1999/5/EC) and EN 301 489-1 ............................................................................................................ xxiv
European Union Electromagnetic Compatibility (EMC) Directive (2004/108/EC) ............................ xxiv
European Union Low Voltage Directive (LVD) (2006/95/EC) ............................................................. xxv
European Union RoHS Directive (2002/95/EC) ................................................................................. xxv
European Union Telecommunications Terminal Equipment Directive (91/263/EEC) ........................ xxv
CE Mark ........................................................................................................................................ xxv
Product Support ...................................................................................................................................... xxv
Comtech EF Data Headquarters ........................................................................................................... xxvi
Warranty Policy ...................................................................................................................................... xxvi
Limitations of Warranty .......................................................................................................................... xxvi
Exclusive Remedies ............................................................................................................................. xxvii
CHAPTER 1. INTRODUCTION ........................................................................................................... 1–1
1.1 Overview ...................................................................................................................................... 1–1
1.2 Functional Description ............................................................................................................... 1–3
1.3 Features ....................................................................................................................................... 1–4
1.3.1 Physical Desc r iption.................................................................................................................. 1–4
1.3.2 Modem Compatibility ................................................................................................................ 1–4
1.3.3 Verification ................................................................................................................................ 1–4
1.3.4 Updating Modem Firmware ...................................................................................................... 1–4
1.3.5 Standard Data Interfaces .......................................................................................................... 1–5
1.3.6 Optional Hardware and Accessories......................................................................................... 1–6
1.3.7 Fully Accessible System T opology (FAST) ............................................................................... 1–7
1.3.8 Supporting Hardware and Software .......................................................................................... 1–9
1.3.9 Physical Features ................................................................................................................... 1–10
1.3.9.1 Dimensional Envelope ................................................................................................ 1–10
1.3.9.2 Front Panel Features .................................................................................................. 1–11
1.3.9.3 Rear Panel Features ................................................................................................... 1–12
1.4 Summary of Specifications ...................................................................................................... 1–14
1.4.1 Modulator ................................................................................................................................ 1–14
1.4.2 Demodulator ........................................................................................................................... 1–19
1.4.3 Data Interfaces ........................................................................................................................ 1–26
1.4.4 Automatic Uplink Power Control (AUPC)................................................................................ 1–26
1.4.5 DoubleTalk® Carrier- in-Carrier® (CnC) ................................................................................... 1–27
1.4.6 Data Rate Ranges .................................................................................................................. 1–28
1.4.7 VersaFEC Adaptive Coding and Modulation (ACM) ............................................................... 1–29
1.4.7.1 V ersaFEC ACM ........................................................................................................... 1–29
1.4.7.2 VersaFEC-2 ACM ........................................................................................................ 1–31
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1.4.8 Miscellaneous ......................................................................................................................... 1–34
1.4.9 Approvals ................................................................................................................................ 1–34
CHAPTER 2. INSTALLATION ............................................................................................................ 2–1
2.1 Unpack and Inspect the Shipment ............................................................................................ 2–1
2.2 Modem - Rack Enclosure Installation ....................................................................................... 2–2
2.2.1 Optional Rear-Mounting Support Brackets Kits Installation ...................................................... 2–5
2.3 Modem Configuration ................................................................................................................. 2–6
2.4 Verify Modem Operation ............................................................................................................. 2–6
2.5 Connect the External Cables ..................................................................................................... 2–7
CHAPTER 3. REAR PANEL CONNECTORS AND PINOUTS ........................................................... 3–1
3.1 Cabling Connection Types ......................................................................................................... 3–1
3.1.1 Coaxial Cable Connections ...................................................................................................... 3–1
3.1.1.1 Type ‘BNC’ .................................................................................................................... 3–2
3.1.1.2 Type ‘TNC’ ..................................................................................................................... 3–2
3.1.1.3 Type ‘N’ ......................................................................................................................... 3–2
3.1.1.4 Type ‘F’ .......................................................................................................................... 3–2
3.1.1.5 Type ‘SMA’ (Subminiature Version ‘A’) .......................................................................... 3–3
3.1.2 D-Subminiature Cable Connections ......................................................................................... 3–3
3.1.3 RJ-45, RJ-48 Cable Connections ............................................................................................. 3–4
3.2 Cabling Connections .................................................................................................................. 3–4
3.2.1 IF Connection Group ................................................................................................................ 3–6
3.2.1.1 Rx IF Connectors .......................................................................................................... 3–6
3.2.1.2 Tx IF Connectors ........................................................................................................... 3–6
3.2.2 Terrestrial Data Connection Group ........................................................................................... 3–6
3.2.2.1 Data Interface (DB-25F) ................................................................................................ 3–6
3.2.2.2 G.703 Connectors.......................................................................................................... 3–8
3.2.2.2.1 Balanced G.703 (DB-9F) ............................................................................................ 3–8
3.2.2.2.2 Aux G.703 (DB-9F) .................................................................................................... 3–9
3.2.2.2.3 Quad E1 Operation via the Balanced G.703 / Aux G.703 Connectors ...................... 3–9
3.2.2.2.4 Unbal G.703 / Insert Data Out (IDO), Drop Data In (DDI) ........................................ 3–13
3.2.2.2.5 G.703 Insert Data In (IDI), Drop Data Out (DDO) .................................................... 3–13
3.2.2.3 Quad 10/100 Ethernet (RJ-45) .................................................................................... 3–13
3.2.3 Utility Connections Group ....................................................................................................... 3–14
3.2.3.1 Remote Control (DB-9M) ............................................................................................ 3–14
3.2.3.2 Alarms (DB-15M)......................................................................................................... 3–15
3.2.3.3 Pre-Mapped Symbol Interface (PMSI) Connector (DB-9F) ........................................ 3–16
3.2.3.4 1:1 Control (DB-9F) ..................................................................................................... 3–17
3.2.3.5 Ext Ref In/Out .............................................................................................................. 3–17
3.3 Ground and Power Connections ............................................................................................. 3–18
3.3.1 Chassis Ground Interface ....................................................................................................... 3–18
3.3.2 Standard 100V/240V Alternating Current (AC) Power Interface ............................................. 3–19
3.3.2.1 AC Operation – Accessories ....................................................................................... 3–20
3.3.2.2 AC Operation – Apply Power ...................................................................................... 3–20
3.3.2.3 AC Operation – Fuse Replacement ............................................................................ 3–21
3.3.3 Optional 48V Direct Current (DC) Power Interface ................................................................. 3–22
3.3.3.1 DC Operation – Accessories (Optional) ...................................................................... 3–23
3.3.3.2 DC Operation – Apply Power (Optional) ..................................................................... 3–23
3.3.3.3 DC Operation – Fuse Replacement (Optional) ........................................................... 3–24
CHAPTER 4. UPDATE FIRMWARE ................................................................................................... 4–1
4.1 Update Firmware via the Internet .............................................................................................. 4–1
4.2 About Firmware Files, Naming, Versions, and Archive Formats ........................................... 4–2
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4.3 Ethernet FTP Upload Procedure ................................................................................................ 4–3
4.3.1 Getting Started: Prepare for the Firmware Download ............................................................... 4–3
4.3.2 Download and Extract the Firmware Update ............................................................................ 4–8
4.3.3 Perform the Ethernet FTP Upload Procedure ........................................................................ 4–10
CHAPTER 5. FAST ACTIVATION PROCEDURE ............................................................................... 5–1
5.1 Overview ...................................................................................................................................... 5–1
5.2 FA S T A cti vation Procedure ........................................................................................................ 5–2
5.2.1 FAST Activation Using the Front Panel ..................................................................................... 5–2
5.2.2 FAST Activation Using the HTTP (Web Server) Interface ........................................................ 5–4
CHAPTER 6. FRONT PANEL OPERATION ....................................................................................... 6–1
6.1 Overview ...................................................................................................................................... 6–1
6.1.1 LED Indicators .......................................................................................................................... 6–2
6.1.2 Keypad ...................................................................................................................................... 6–4
6.1.3 Vacuum Fluorescent Display (VFD) .......................................................................................... 6–4
6.1.3.1 Screen Saver ................................................................................................................. 6–4
6.1.3.2 Opening Screen ............................................................................................................ 6–5
6.1.3.2.1 Feature Availability/Operation Indicators via the Opening Screen ............................ 6–5
6.2 SELECT: (Main) Menu ................................................................................................................. 6–6
6.2.1 SELECT: CONFIG (Configuration) Menu Branch ..................................................................... 6–8
6.2.1.1 CONFIG: All ................................................................................................................... 6–9
6.2.1.2 CONFIG: Mode ........................................................................................................... 6–10
6.2.1.3 CONFIG: Tx ................................................................................................................ 6–12
6.2.1.3.1 CONFIG: Tx Tx-IF ............................................................................................... 6–12
6.2.1.3.2 CONFIG: Tx Freq (Frequency) ........................................................................... 6–13
6.2.1.3.3 CONFIG: Tx Power ............................................................................................. 6–14
6.2.1.3.4 CONFIG: Tx FEC ................................................................................................ 6–17
6.2.1.3.5 CONFIG: Tx Mod (Modulation) ........................................................................... 6–18
6.2.1.3.6 CONFIG: Tx Data ................................................................................................ 6–19
6.2.1.3.7 CONFIG: Tx Symb (IP-ACM or V2-ACM Modes Only) ....................................... 6–21
6.2.1.3.8 CONFIG: Tx Scrambler ....................................................................................... 6–22
6.2.1.4 CONFIG: Rx ................................................................................................................ 6–23
6.2.1.4.1 CONFIG: Rx Rx-IF .............................................................................................. 6–23
6.2.1.4.2 CONFIG: Rx Freq (Frequency) ............................................................................ 6–25
6.2.1.4.3 CONFIG: Rx FEC ................................................................................................ 6–26
6.2.1.4.4 CONFIG: Rx Demod (Demodulation).................................................................. 6–26
6.2.1.4.5 CONFIG: Rx Data ............................................................................................... 6–27
6.2.1.4.6 CONFIG: Rx Symb (IP-ACM or V2-ACM Modes Only) ...................................... 6–29
6.2.1.4.7 CONFIG: Rx Descram (Descrambler) ................................................................. 6–29
6.2.1.4.8 CONFIG: Rx EbNo .............................................................................................. 6–30
6.2.1.4.9 CONFIG: Rx SNR (IP-ACM or V2-ACM Modes Only) ........................................ 6–30
6.2.1.5 CONFIG: Clocks .......................................................................................................... 6–31
6.2.1.5.1 CONFIG: Clocks Tx Clock................................................................................... 6–31
6.2.1.5.2 CONFIG: Clocks Rx Buffer/Clock ....................................................................... 6–32
6.2.1.5.3 CONFIG: Clocks Clk-Exten (G.703 Clock Extension) ......................................... 6–33
6.2.1.5.4 CONFIG: Clocks Freq-Ref .................................................................................. 6–34
6.2.1.5.5 CONFIG: Clocks Int-Ref-Adjust .......................................................................... 6–34
6.2.1.6 CONFIG: D&I (Drop & Insert) ...................................................................................... 6–35
6.2.1.6.1 CONFIG: D&I (D&I, D&I++ One-Port Drop and Insert Framing Mode) ................... 6–35
6.2.1.6.2 CONFIG: Quad D&I (QDI) (QDI, Framed QDI Framing Mode) ............................... 6–37
6.2.1.7 CONFIG: ACM (Adaptive Coding and Modulation) (IP-ACM or V2-ACM Modes Only)6–39
6.2.1.7.1 CONFIG: ACM Min/Max-ModCod ....................................................................... 6–39
6.2.1.7.2 CONFIG: ACM Unlock-Action ............................................................................. 6–40
6.2.1.7.3 CONFIG: ACM Target-SNR-Margin .................................................................... 6–40
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6.2.1.8 CONFIG: CnC ............................................................................................................. 6–41
6.2.1.8.1 CONFIG: CnC Mode ........................................................................................... 6–41
6.2.1.8.2 CONFIG: CnC CONFIG: CnC Freq-Offset ..................................................... 6–42
6.2.1.8.3 CONFIG: CnC Search-Delay .............................................................................. 6–42
6.2.1.8.4 CONFIG: CnC PMSI-Control .............................................................................. 6–43
6.2.1.9 CONFIG: EDMAC ....................................................................................................... 6–44
6.2.1.10 CONFIG: Misc ............................................................................................................. 6–45
6.2.1.10.1 CONFIG: Misc G.703-LineCode (Ternary Code) ................................................. 6–45
6.2.1.10.2 CONFIG: Misc RTS ............................................................................................. 6–46
6.2.1.10.3 CONFIG: Misc Warm-Up ..................................................................................... 6–46
6.2.1.10.4 CONFIG: Misc Stats (Statistics) .......................................................................... 6–47
6.2.1.10.5 CONFIG: Misc MEO (Medium Earth Orbit) ......................................................... 6–47
6.2.1.11 CONFIG: Mask ............................................................................................................ 6–48
6.2.1.11.1 CONFIG: Mask AIS ............................................................................................. 6–49
6.2.1.11.2 CONFIG: Mask Buffer/Ref .................................................................................. 6–49
6.2.1.11.3 CONFIG: Mask RxIF ........................................................................................... 6–49
6.2.1.11.4 CONFIG: Mask TxClk .......................................................................................... 6–50
6.2.1.11.5 CONFIG: Mask CnC............................................................................................ 6–50
6.2.1.11.6 CONFIG: Mask Terr ............................................................................................. 6–50
6.2.1.11.7 CONFIG: Mask BUC ........................................................................................... 6–51
6.2.1.11.8 CONFIG: Mask LNB ............................................................................................ 6–51
6.2.1.11.9 CONFIG: Mask ClkExt (G.703 Clock Extension Mask) ....................................... 6–51
6.2.1.12 CONFIG: Remote (Remote Control) ........................................................................... 6–52
6.2.1.12.1 CONFIG: Remote Local or Serial Remote Settings ............................................ 6–52
6.2.1.13 CONFIG: IP ................................................................................................................. 6–52
6.2.1.13.1 CONFIG: IP Addresses ....................................................................................... 6–53
6.2.1.13.2 CONFIG: IP SNMP .............................................................................................. 6–53
6.2.1.13.3 CONFIG: IP Setup ............................................................................................... 6–56
6.2.1.13.4 CONFIG: IP ANT (Advanced Network Timing) .................................................... 6–69
6.2.1.13.5 CONFIG: IP PortMonitor ..................................................................................... 6–72
6.2.1.13.6 CONFIG: IP AccessList ........................................................................................ 6–72
6.2.1.13.7 CONFIG: IP PktP-Enable .................................................................................... 6–73
6.2.2 SELECT : Test Menu Branch ................................................................................................... 6–74
6.2.2.1 SELECT : TEST Mode ............................................................................................. 6–74
6.2.2.2 SELECT : TEST BERT............................................................................................. 6–77
6.2.2.2.1 SELECT : TEST BERT Config ......................................................................... 6–77
6.2.2.2.2 SELECT : TEST BERT Monitor........................................................................ 6–77
6.2.2.3 SELECT : TEST CnC-APC-Monitor ......................................................................... 6–78
6.2.2.4 SELECT : TEST Uncorrected-BER .......................................................................... 6–78
6.2.3 SELECT: Monitor Menu Branch .............................................................................................. 6–80
6.2.3.1 Monitor: Live-Alarms ................................................................................................... 6–80
6.2.3.2 Monitor: Stored Events Stored Events: Clear-All: No (No, Yes) ................................. 6–82
6.2.3.3 Monitor: ACM ............................................................................................................... 6–82
6.2.3.4 Monitor: Statistics ........................................................................................................ 6–83
6.2.3.4.1 Monitor: Statistics Examples .................................................................................... 6–83
6.2.3.5 Monitor: Rx Parameters Rx-Parameters: EbNo=11.4dB ∆F=+011.7kHz ................... 6–85
6.2.3.6 Monitor: RemoteEbNo ................................................................................................. 6–86
6.2.3.7 Monitor: AUPC Parameters ......................................................................................... 6–86
6.2.3.8 Monitor: CnC-Parameters ........................................................................................... 6–87
6.2.3.9 Monitor: IP Statistics .................................................................................................... 6–87
6.2.4 SELECT: Info (Information) Menu Branch .............................................................................. 6–88
6.2.4.1 Info: All ......................................................................................................................... 6–88
6.2.4.2 Info: ID ......................................................................................................................... 6–88
6.2.4.3 Info: Mode ................................................................................................................... 6–89
6.2.4.4 Info: Tx......................................................................................................................... 6–89
6.2.4.5 Info: Rx ........................................................................................................................ 6–90
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6.2.4.6 Info: Clocks .................................................................................................................. 6–91
6.2.4.7 Info: EDMAC ............................................................................................................... 6–91
6.2.4.8 Info: Drop ..................................................................................................................... 6–91
6.2.4.9 Info: Insert ................................................................................................................... 6–91
6.2.4.10 Info: Remote ................................................................................................................ 6–92
6.2.4.11 Info: Alarm-Mask ......................................................................................................... 6–92
6.2.4.12 Info: Misc ..................................................................................................................... 6–92
6.2.5 SELECT: Store/Ld (Store/Load) Menu Branch ....................................................................... 6–93
6.2.6 SELECT: Utility Menu Branch ................................................................................................. 6–94
6.2.6.1 Utilities: Set-RTC ......................................................................................................... 6–94
6.2.6.2 Utilities: Display-Bright ................................................................................................ 6–94
6.2.6.3 Utilities: CarrID ............................................................................................................ 6–95
6.2.6.3.1 Utilities: CarrID Latitude ...................................................................................... 6–95
6.2.6.3.2 Utilities: CarrID Longitude ................................................................................... 6–96
6.2.6.3.3 Utilities: CarrID Telephone .................................................................................. 6–96
6.2.6.3.4 Utilities: CarrID Message .................................................................................... 6–96
6.2.6.4 Utilities: LED ................................................................................................................ 6–97
6.2.6.5 Utilities: Redundancy .................................................................................................. 6–97
6.2.6.5.1 Utilities: Redundancy Traffic-IP-Addr/Range....................................................... 6–97
6.2.6.5.2 Utilities: Redundancy 1:1 .................................................................................... 6–97
6.2.6.5.3 Utilities: Redundancy 1:N .................................................................................... 6–98
6.2.6.6 Utilities: Circuit-ID ........................................................................................................ 6–98
6.2.6.7 Utilities: Firmware ........................................................................................................ 6–99
6.2.6.7.1 Utilities: Firmware Base-Modem ......................................................................... 6–99
6.2.6.7.2 Utilities: Firmware Packet-Processor ................................................................ 6–100
6.2.7 SELECT: ODU Menu Branch (Summary Only) .................................................................... 6–101
6.2.8 SELECT: FAST Menu Branch ............................................................................................... 6–101
6.2.8.1 FAST: Options ........................................................................................................... 6–101
6.2.8.1.1 FAST: Options View Options ............................................................................. 6–101
6.2.8.1.2 FAST: Options Set Register1 or Set Register 2 ................................................ 6–103
6.2.8.2 F AST: Demo-Mode .................................................................................................... 6–104
6.2.8.3 FAST: CnC ................................................................................................................. 6–105
CHAPTER 7. ETHERNET-BASED REMOTE PRODUCT MANAGEMENT....................................... 7–1
7.1 Overview ...................................................................................................................................... 7–1
7.2 Ethernet Management Interface Protocols ............................................................................... 7–1
7.3 SNMP Interface ............................................................................................................................ 7–2
7.3.1 Management Information Base (MIB) Files .............................................................................. 7–2
7.3.2 SNMP Community Strings ........................................................................................................ 7–3
7.3.3 SNMP Traps .............................................................................................................................. 7–3
7.4 Telnet Interface ............................................................................................................................ 7–5
7.4.1 Using the Telnet Interface for Standard Remote Control Protocol ............................................ 7–5
7.4.1.1 Using HyperTerminal for Telnet Remote Control Operation .......................................... 7–6
7.4.2 Using the Telnet Interface for Telnet Command Line Interface (CLI) Operation ....................... 7–7
7.5 HTTP (Web Server ) Interface ...................................................................................................... 7–8
7.5.1 User Login ................................................................................................................................. 7–8
7.5.2 HTTP Interface – Operational Features .................................................................................. 7–10
7.5.2.1 Navigation ................................................................................................................... 7–10
7.5.2.2 Page Sections ............................................................................................................. 7–10
7.5.2.3 Action Buttons ............................................................................................................. 7–10
7.5.2.4 Drop-down Lists .......................................................................................................... 7–10
7.5.2.5 Text or Data Entry ........................................................................................................ 7–11
7.5.3 HTTP Interface – Menu Tree .................................................................................................. 7–11
7.5.3.1 Conditional Access to IP Packet Processor Pages ..................................................... 7–13
7.5.4 Web Server Page Descriptions ............................................................................................... 7–15
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7.5.4.1 Home T ab .................................................................................................................... 7–15
7.5.4.1.1 Home | Home Page ................................................................................................. 7–15
7.5.4.1.2 Home | Contact ........................................................................................................ 7–16
7.5.4.1.3 Home | Support ........................................................................................................ 7–17
7.5.4.2 Admin T ab ................................................................................................................... 7–18
7.5.4.2.1 Admin | Access ........................................................................................................ 7–18
7.5.4.2.2 Admin | SNMP ......................................................................................................... 7–21
7.5.4.2.3 Admin | Firmware ..................................................................................................... 7–22
7.5.4.2.4 Admin | Reboot ........................................................................................................ 7–25
7.5.4.2.5 Admin | FAST ........................................................................................................... 7–26
7.5.4.2.6 Admin | Utilities ........................................................................................................ 7–28
7.5.4.3 Configuration Tab ........................................................................................................ 7–29
7.5.4.3.1 Configuration | Modem ............................................................................................ 7–30
7.5.4.3.2 Configuration | LAN.................................................................................................. 7–34
7.5.4.3.3 Configuration | Routing ............................................................................................ 7–40
7.5.4.3.4 Configuration | Managed Switc h .............................................................................. 7–46
7.5.4.3.5 Configuration | WAN ................................................................................................ 7–47
7.5.4.3.6 Configuration | Overhead ......................................................................................... 7–60
7.5.4.3.7 Configuration | Utilities ............................................................................................. 7–62
7.5.4.3.8 Configuration | D&I................................................................................................... 7–66
7.5.4.3.9 Configuration | BUC ................................................................................................. 7–67
7.5.4.3.10 Configuration | LNB.................................................................................................. 7–68
7.5.4.3.11 Configuration | ANT.................................................................................................. 7–69
7.5.4.3.12 Configuration | MEO ................................................................................................ 7–72
7.5.4.4 Status Pages ............................................................................................................... 7–74
7.5.4.4.1 Status | Modem Status ............................................................................................. 7–74
7.5.4.4.2 Status | Modem Logs ............................................................................................... 7–76
7.5.4.4.3 Status | Modem Info ................................................................................................. 7–80
7.5.4.4.4 Status | Traffic Statistics ........................................................................................... 7–81
7.5.4.4.5 Status | Performance ............................................................................................... 7–95
7.5.4.5 ODU (Outdoor Unit) Pages (Summary Only) .............................................................. 7–97
7.5.4.6 Redundancy Page ....................................................................................................... 7–99
CHAPTER 8. SERIAL REMOTE CONTROL ...................................................................................... 8–1
8.1 Overview ...................................................................................................................................... 8–1
8.2 EIA-485 ......................................................................................................................................... 8–1
8.3 EIA-232 ......................................................................................................................................... 8–2
8.4 Basic Protocol ............................................................................................................................. 8–2
8.4.1 Packet Structure........................................................................................................................ 8–3
8.4.1.1 Start of Packet ............................................................................................................... 8–4
8.4.1.2 T arget Address .............................................................................................................. 8–4
8.4.1.3 Address Delimiter .......................................................................................................... 8–4
8.4.1.4 Instruction Code ............................................................................................................ 8–4
8.4.1.5 Instruction Code Qualifier .............................................................................................. 8–5
8.4.1.6 Optional Message Arguments ....................................................................................... 8–6
8.4.1.7 End Of Packet ............................................................................................................... 8–6
8.5 Remote Commands and Queries............................................................................................... 8–7
8.5.1 Table Indexes ............................................................................................................................ 8–7
8.5.2 Tx Parameters ........................................................................................................................ 8–10
8.5.3 Rx Parameters ........................................................................................................................ 8–18
8.5.4 Unit Parameters ...................................................................................................................... 8–25
8.5.5 Bulk Configuration Strings ...................................................................................................... 8–42
8.5.6 Modem Information ................................................................................................................. 8–48
8.5.7 Modem Performance Information ........................................................................................... 8–52
8.5.8 BUC Parameters (L-Band Device) .......................................................................................... 8–58
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8.5.9 LNB Parameters (L-Band Device) .......................................................................................... 8–60
8.5.10 Ethernet Parameters ............................................................................................................... 8–61
CHAPTER 9. TELNET COMMAND LINE INTERFACE (CLI) OPERATION ...................................... 9–1
9.1 Overview ...................................................................................................................................... 9–1
9.1.1 Interface Access ........................................................................................................................ 9–1
9.1.2 Terminal Emulator Considerations ............................................................................................ 9–2
9.1.2.1 PuTTY Terminal Emulator ............................................................................................. 9–2
9.1.2.2 Tera T erm Terminal Emulator ........................................................................................ 9–4
9.2 Telnet Command Line Interface (CLI) ........................................................................................ 9–7
9.2.1 Telnet CLI Menu System – Parallel Functionality ..................................................................... 9–7
9.2.2 CLI Menus – Common Navigation and Operation Features .................................................... 9–7
9.3 Command Line Interface Pages – Home (Main) Menu .......................................................... 9–11
9.3.1 Home > Remote Mode ............................................................................................................ 9–12
9.3.2 Home > Administration ............................................................................................................ 9–13
9.3.2.1 Home > Administration > Host Access List ................................................................. 9–14
9.3.2.2 Home > Administration > SNMP ................................................................................. 9–16
9.3.2.3 Home > Administration > Firmware (Base Modem) or (Packet Processor) ................ 9–17
9.3.2.4 Home > Administration > Reboot ................................................................................ 9–19
9.3.2.5 Home > Administration > FAST Options ..................................................................... 9–20
9.3.2.6 Home > Administration > Save Modem Configuration / Load Modem Configuration . 9–21
9.3.2.7 Home > Administration > Restore Factory Defaults .................................................... 9–23
9.3.3 Home > Modem ...................................................................................................................... 9–24
9.3.3.1 Home > Modem > Interface ........................................................................................ 9–26
9.3.3.2 Home > Modem > Modem TX ..................................................................................... 9–27
9.3.3.3 Home > Modem > Modem RX .................................................................................... 9–29
9.3.3.4 Home > Modem > CnC (Carrier-in-Carrier) ................................................................ 9–31
9.3.3.5 Home > Modem > ACM (Adaptive Coding and Modulation) ....................................... 9–32
9.3.3.6 Home > Modem > VersaFEC-2 ACM .......................................................................... 9–33
9.3.3.7 Home > Modem > D&I ................................................................................................ 9–34
9.3.3.7.1 Home > Modem > D&I > D&I Table ......................................................................... 9–35
9.3.3.8 Home > Modem > BUC ............................................................................................... 9–37
9.3.3.9 Home > Modem > LNB ............................................................................................... 9–38
9.3.3.10 Home > Modem > MEO .............................................................................................. 9–39
9.3.3.11 Home > Modem > Utilities ........................................................................................... 9–40
9.3.3.12 Home > Modem > Overhead ....................................................................................... 9–43
9.3.4 Home > Network Submenu..................................................................................................... 9–44
9.3.4.1 Home > Network > Ethernet Ports .............................................................................. 9–46
9.3.4.1.1 Home > Network > Ethernet Ports > Ethernet Port # .............................................. 9–47
9.3.4.2 Home > Network > LAN IP .......................................................................................... 9–48
9.3.4.3 Home > Network > LAN ARP ...................................................................................... 9–49
9.3.4.3.1 Home > Network > LAN ARP > Arp Table > Arp Entry # ......................................... 9–50
9.3.4.4 Home > Network > VLAN ............................................................................................ 9–51
9.3.4.4.1 Home > Network > VLAN > VLAN Table > VLAN # ................................................. 9–52
9.3.4.5 Home > Network > Routes .......................................................................................... 9–53
9.3.4.5.1 Home > Network > Routes > Route Table ............................................................... 9–54
9.3.4.6 Home > Network > Managed Switch........................................................................... 9–55
9.3.4.7 Home > Network > IGMP ............................................................................................ 9–56
9.3.4.8 Home > Network > DNS .............................................................................................. 9–57
9.3.4.9 Home > Network > DHCP ........................................................................................... 9–58
9.3.4.10 Home > Network > PTP .............................................................................................. 9–59
9.3.4.11 Home > Network > SNTP ............................................................................................ 9–60
9.3.4.12 Home > Network > MAC Table .................................................................................... 9–61
9.3.5 Home > WAN .......................................................................................................................... 9–62
9.3.5.1 Home > WAN > QoS ................................................................................................... 9–63
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9.3.5.1.1 Home > WAN > QoS > Max-Pri / Min-Max Table .................................................... 9–64
9.3.5.1.2 Home > WAN > QoS > QoS Differentiated Services Table ..................................... 9–65
9.3.5.2 Home > WAN > Compression ..................................................................................... 9–66
9.3.5.3 Home >WAN > Encryption .......................................................................................... 9–67
9.3.6 Home > Outdoor Unit (ODU) .................................................................................................. 9–69
9.3.7 Home > Redundancy .............................................................................................................. 9–70
9.3.8 Home > General Information .................................................................................................. 9–71
9.3.8.1 Home > General Information > Modem Status ........................................................... 9–72
9.3.8.2 Home > General Information > Modem Information ................................................... 9–73
9.3.8.3 Home > General Information > MAC Table ................................................................. 9–74
9.3.8.4 Home > General Information > Block Upconverter (BUC) .......................................... 9–75
9.3.8.5 Home > General Information > Low Noise Block Downconverter (LNB) .................... 9–75
9.3.9 Home > Logs .......................................................................................................................... 9–76
9.3.9.1 Home > Logs > Base Modem ..................................................................................... 9–77
9.3.9.1.1 Home > Logs > Base Modem > Stored Event Table ............................................... 9–78
9.3.9.1.2 Home > Logs > Base Modem > Stored Statistic Table ............................................ 9–79
9.3.9.2 Home > Logs > Packet Processor .............................................................................. 9–80
9.3.9.2.1 Home > Logs > Packet Processor > Stored Event Table ........................................ 9–81
9.3.10 Home > Statistics .................................................................................................................... 9–82
9.3.10.1 Home > Statistics > Ethernet Submenu ...................................................................... 9–83
9.3.10.1.1 Home > Statistics > Ethernet > Rx ........................................................................... 9–84
9.3.10.1.2 Home > Statistics > Ethernet > Tx ........................................................................... 9–85
9.3.10.1.3 Home > Statistics > Ethernet > Errors ..................................................................... 9–86
9.3.10.2 Home > Statistics > Router ......................................................................................... 9–87
9.3.10.3 Home > Statistics > Managed Switch .......................................................................... 9–88
9.3.10.4 Home > Statistics > WAN (Router Mode) .................................................................... 9–89
9.3.10.5 Home > Statistics > WAN (Managed Switch Mode) .................................................... 9–90
9.3.10.6 Home > Statistics > Compression ............................................................................... 9–91
9.3.10.6.1 Home > Statistics > Compression > Table View ...................................................... 9–92
9.3.10.7 Home > Statistics > QoS ............................................................................................. 9–93
9.3.10.7.1 Home > Statistics > QoS > Table View .................................................................... 9–94
9.3.10.8 Home > Statistics > PTP ............................................................................................. 9–95
9.3.10.8.1 Home > Statistics > PTP > LAN Details ................................................................... 9–96
9.3.10.8.2 Home > Statistics > PTP > WAN Details ................................................................. 9–97
9.3.10.9 Home > Statistics > CPU ............................................................................................. 9–98
9.3.10.10 Home > Statistics > Clear All Counters ....................................................................... 9–99
9.3.11 Home > Contact .................................................................................................................... 9–100
CHAPTER 10. OUTDOOR UNIT (ODU) (TRANSCEIVER, BUC, AND LNB) OPERATION ............. 10–1
10.1 Overview .................................................................................................................................... 10–1
10.2 ODU Remote Control Address Setup ...................................................................................... 10–2
10.3 ODU Operations via the Front Panel ....................................................................................... 10–3
10.3.1 Front Panel Operation Overview ............................................................................................ 10–3
10.3.2 Front Panel Menus – ODU Menu Hierarchy ........................................................................... 10–4
10.3.3 SELECT: (Main) Menu Overview ............................................................................................ 10–5
10.3.3.1 (SELECT: CONFIGURATION) Menu Branches .......................................................... 10–6
10.3.3.1.1 CONFIG: Tx Freq and CONFIG: Rx Freq Submenus ................................... 10–6
10.3.3.1.2 (SELECT: CONFIGURATION) Mask Submenus ..................................................... 10–6
10.3.3.2 (SELECT: MONITOR) Live-Alarms Menu ................................................................... 10–9
10.3.3.3 (SELECT:) ODU Menu Branches .............................................................................. 10–10
10.3.3.3.1 ODU: BUC:PwrSuppl y+Ref (Po wer Supply and Reference) ................................. 10–10
10.3.3.3.2 ODU: LNB:PwrSupply+Ref (Power Supply and Reference) ................................. 10–12
10.3.3.3.3 ODU: FSK-control .................................................................................................. 10–13
10.4 ODU Operations via the CDM-425 HTTP (Web Server) Interface ....................................... 10–38
10.4.1 Web Server Interface and Menu Tree ................................................................................... 10–38
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10.4.2 Web Page Descriptions ........................................................................................................ 10–40
10.4.2.1 Configuration | BUC (Block Up Converter) ................................................................ 10–40
10.4.2.2 Configuration | LNB (Low Noise Block Down Converter) .......................................... 10–41
10.4.2.3 Status | Modem Logs | Base Modem ........................................................................ 10–42
10.4.2.4 ODU Pages ............................................................................................................... 10–44
10.4.2.4.1 ODU | Enable ......................................................................................................... 10–44
10.4.2.4.2 ODU | Config .......................................................................................................... 10–45
10.4.2.4.3 ODU | Status .......................................................................................................... 10–50
10.4.2.4.4 ODU | Utilities ........................................................................................................ 10–52
10.5 ODU Operations via the Telnet Command Line Interface (CLI) .......................................... 10–55
10.5.1 ODU Operations using the Telnet CLI .................................................................................. 10–56
10.5.1.1 Home (Main) Menu.................................................................................................... 10–56
10.5.1.2 Home > Outdoor Unit (ODU) Submenu .................................................................... 10–58
10.5.1.2.1 Home > Outdoor Unit (ODU) > CSAT-5060 Submenu .......................................... 10–59
APPENDIX A. CABLE DRAWINGS ..................................................................................................... A-1
A.1 Overview ...................................................................................................................................... A-1
A.1.1 EIA-530 to EIA-422/449 DCE Conversion Cable ......................................................................A-1
A.1.2 EIA-530 to V.35 DCE Conversion Cable ...................................................................................A-3
A.1.3 EIA-232 Remote Control Cable .................................................................................................A-4
APPENDIX B. FORWARD ERROR CORRECTION (FEC) OPTIONS ................................................B–1
B.1.1 VersaFEC Extensions ............................................................................................................... B–4
B.1.1.1 Extended CCM Codes .................................................................................................. B–4
B.1.1.2 Ultra-Low-Latency (ULL) Codes .................................................................................... B–4
B.2 VersaFEC-2 ACM and CCM........................................................................................................ B–5
APPENDIX C. AUPC (AUTOMATIC UPLINK POWER CONTROL) ...................................................C–1
C.1 AUPC Overview .......................................................................................................................... C–1
C.2 Setting AUPC Parameters ......................................................................................................... C–2
C.2.1 Target Eb/No .............................................................................................................................C–2
C.2.2 Max Range ................................................................................................................................C–2
C.2.3 Alarm .........................................................................................................................................C–2
C.2.4 Demod Unlock ..........................................................................................................................C–3
C.3 Compensation Rate ................................................................................................................... C–3
C.4 Monitoring ................................................................................................................................... C–4
APPENDIX D. CARRIER ID (DVB-CID METACARRIER®) ..................................................................D–1
D.1 Overview ..................................................................................................................................... D–1
D.2 About MetaCarrier ...................................................................................................................... D–1
D.3 Functional Description .............................................................................................................. D–2
D.4 Configuring the Carrier ID Operation ....................................................................................... D–3
D.4.1 Enabling Carrier ID Operation ..................................................................................................D–3
D.4.1.1 Enabling Operation via the Front Panel and VFD .........................................................D–3
APPENDIX E. CLOCK MODES AND DROP AND INSERT (D&I) ...................................................... E–1
E.1 Overview ...................................................................................................................................... E–1
E.2 Transmit Clocking ....................................................................................................................... E–1
E.2.1 Internal Clock ............................................................................................................................ E–1
E.2.2 TX Terrestrial ............................................................................................................................. E–2
E.2.3 RX Loop-Timed, RX=TX ........................................................................................................... E–2
E.2.4 RX Loop-Timed, RX<>TX (Asymmetric Loop Timing) .............................................................. E–2
E.2.5 External TT with ST = RX Satellite ........................................................................................... E–2
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E.3 Receive Clocking ........................................................................................................................ E–4
E.3.1 Buffer Disabled (RX Satellite) ................................................................................................... E–4
E.3.2 Buffer Enabled, TX=RX (TX Terrestrial or Int (SCT) Clock) ...................................................... E–4
E.3.3 Buffer Enabled, RX<>TX (TX Terrestrial or Int (SCT) Clock) ................................................... E–4
E.4 X.21 Notes .................................................................................................................................... E–6
E.5 Drop and Insert (D&I) .................................................................................................................. E–6
E.6 Frame Formats ............................................................................................................................ E–7
E.7 Timeslot Selection....................................................................................................................... E–8
E.8 Drop and Insert (D&I) Clocking .................................................................................................. E–9
E.9 RX Buffer Clock = Insert (D&I only) .........................................................................................E–10
E.10 Single-Source Multiple Modems ..............................................................................................E–10
E.11 G.703 Clock Extension .............................................................................................................. E–11
E.11.1 Clock Extension Mode 1 ......................................................................................................... E–11
E.11.2 Clock Extension Mode 2 ......................................................................................................... E–12
E.11.3 Clock Extension Mode 3 ......................................................................................................... E–12
E.12 Quad E1 Operation ....................................................................................................................E–17
APPENDIX F. DOUBLE TALK CARRIER-IN-CARRIER (CNC) OPTION ........................................... F–1
F.1 Overview ...................................................................................................................................... F–1
F.1.1 What is DoubleTalk Carrier-in-Carrier? ..................................................................................... F–1
F.1.2 Application Requirements ......................................................................................................... F–2
F.1.3 Operational Recommendations ................................................................................................ F–4
F.2 System Functionality and Operational Considerations .......................................................... F–4
F.2.1 DoubleTalk Carrier-in-Carrier Cancellation Process ................................................................. F–8
F.2.2 Margin Requirements................................................................................................................ F–9
F.2.4 Carrier-in-Carrier and Adaptive Coding and Modulation......................................................... F–10
F.2.5 Carrier-in-Carrier Link Design ................................................................................................. F–10
F.2.5.1 Symmetric Data Rate Link .......................................................................................... F–10
F.2.5.2 Asymmetric Data Rate Link ......................................................................................... F–13
F.2.5.3 Power Limited Link s .................................................................................................... F–15
F.2.6 Carrier-in-Carrier Commissioning and Deployment ................................................................ F–17
F.2.7 Validate Carrier-in-Carrier Perf ormance ................................................................................. F–18
F.3 Operational References ............................................................................................................ F–19
F.3.1 Calculate Carrier-in-Carrier Link Budget................................................................................. F–19
F.3.2 Methods to Estimate PSD Ration ........................................................................................... F–20
F.3.2.1 Use Downlink EIRP and Symbol Rate ........................................................................ F–20
F.3.2.2 Use LST ...................................................................................................................... F–20
F.3.2.3 Use Satmaster ............................................................................................................. F–21
F.4 Carrier-in-Carrier Automatic Power Control (CnC-APC) ....................................................... F–22
F.4.1 Overview ................................................................................................................................. F–22
F.4.2 AUPC and Carrier-in-Carrier ................................................................................................... F–22
F.4.3 The CnC Automatic Power Control Algorithm ......................................................................... F–22
F.4.4 CnC-APC Framing .................................................................................................................. F–25
F.4.4.1 CnC-APC Framing and the Self-Locking Problem ...................................................... F–26
F.4.5 CnC-APC Response Time ...................................................................................................... F–26
F.4.6 CnC-APC Setu p ...................................................................................................................... F–27
F.4.7 CnC-APC Redundancy Support Notes ................................................................................... F–31
F.5 DoubleTalk Carrier-in-Carrier Specifications ......................................................................... F–32
F.6 Carrier-in-C a rri er Su m mary ...................................................................................................... F–33
F.7 Glossary ..................................................................................................................................... F–33
APPENDIX G. EB/NO MEASUREMENT ............................................................................................... G–1
G.1 Overview ..................................................................................................................................... G–1
G.1.1 (Co+No)/ No Ex ample ............................................................................................................... G–2
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APPENDIX H. EDMAC CHANNEL.......................................................................................................H–1
H.1 Overview ..................................................................................................................................... H–1
H.1.1 EDMAC .....................................................................................................................................H–1
H.1.2 Drop & Insert ++ ........................................................................................................................H–2
H.1.3 EDMAC-3 ..................................................................................................................................H–2
H.2 M&C Connection ........................................................................................................................ H–2
H.3 Setup Summary .......................................................................................................................... H–4
APPENDIX I. ETHERNET NETWORK CONFIGURATION ................................................................. I–1
I.1 Overview ....................................................................................................................................... I–1
I.2 Ethernet Overview ........................................................................................................................ I–2
I.2.1 Interface Architecture ................................................................................................................. I–2
I.2.2 Modes of Ethernet Operation ..................................................................................................... I–2
I.2.3 Ethernet Networking Loops ....................................................................................................... I–3
I.2.3.1 Networking Loops in Mana ged Switc h Mode ................................................................. I–4
I.2.3.1.1 Hub-to-Hub Using Ethernet Switches ......................................................................... I–4
I.2.3.1.2 Hub-to-Hub Using Ethernet Routers ........................................................................... I–5
I.2.3.1.3 Hub-to-Remotes Using Ethernet Switches or Routers ............................................... I–6
I.2.3.2 Networking Loops in Router Mode (with IP Packet Processor) ..................................... I–7
I.3 Ethernet Network Configurations in Managed Switch Mode ................................................... I–8
I.3.1 Point-to-Multipoint Hub-to-Remotes, Split-path Traffic Using Routers ...................................... I–8
I.3.2 Point-to-Multipoint Hub-to-Remotes, Split-path Traffic Using Switches ..................................... I–9
I.4 Ethernet Network Configurations in Router Mode (with IP Packet Processor) ................... I–10
I.4.1 Point-to-Multipoint (Router Multipoint Hub) Mode ................................................................... I–10
I.4.1.1 Router Multipoint Hub Configuration ............................................................................ I–11
I.4.2 Multicast Routing Mode ........................................................................................................... I–12
I.4.2.1 Multicast Routing Configuration ................................................................................... I–13
I.5 Ethernet Overhead over WAN Interface ................................................................................... I–14
I.5.1 Managed Switch Mode (without IP Packet Processor) ............................................................ I–14
I.5.2 Router Mode or Managed Switch Mode (with IP Packet Processor) ...................................... I–14
I.6 Ethernet Redundancy ................................................................................................................ I–15
I.7 Advanced Network Timing ........................................................................................................ I–16
I.7.1 Overview .................................................................................................................................. I–16
I.7.2 SNTP (Simple Network Time Protocol) .................................................................................... I–16
I.7.3 Precision Time Protocol (PTP) ................................................................................................. I–16
APPENDIX J. IP PACKET PROCESSOR OPTION ............................................................................ J–1
J.1 Overview ...................................................................................................................................... J–1
J.1.1 Operational Requirements ........................................................................................................ J–2
J.1.2 CDM-425 CDM-425 Interoperability Compatibility/Limitations ............................................. J–2
J.2 IP Packet Processor Features .................................................................................................... J–2
J.2.1 Streamline Encapsulation (SLE) ............................................................................................... J–2
J.2.2 Modes of Operation .................................................................................................................. J–2
J.2.3 Adaptive Coding and Modulation (ACM) .................................................................................. J–2
J.2.4 Subsystem Multiplex (Sub-Mux) ............................................................................................... J–3
J.2.5 FAST Options ............................................................................................................................ J–3
J.2.5.1 Advanced Quality of Service (QoS) .............................................................................. J–4
J.2.5.2 Advanced Encryption Standard (AES) Encryption ........................................................ J–5
J.2.5.3 Header Compression .................................................................................................... J–5
J.2.5.4 Payload Compression ................................................................................................... J–5
J.3 Operation with IP Packet Processor ......................................................................................... J–6
J.3.1 Front Panel Operation .............................................................................................................. J–6
J.3.2 Ethernet-based Remote Product Management ........................................................................ J–6
J.3.2.1 SNMP Interface ............................................................................................................. J–6
J.3.2.2 Telnet Interface .............................................................................................................. J–7
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J.3.2.3 HTTP (Web Server) Interface........................................................................................ J–7
J.4 List of Supported Internet RFCs (Requests for Comment)..................................................... J–8
J.5 IP Packet Processor Field Upgrade Pro cedure ........................................................................ J–9
J.5.1 Overview ................................................................................................................................... J–9
J.5.2 Requirements for Field Upgrade ............................................................................................... J–9
J.5.3 Field Upgrade Procedure ........................................................................................................ J–10
APPENDIX K. VERSAFEC® / VERSAFEC-2 ACM ADAPTIVE CODING AND MODULATION (ACM)
OPTION .......................................................................................................................................K–1
K.1 Overview ..................................................................................................................................... K–1
K.2 Background ................................................................................................................................ K–2
K.3 Requir ements for ACM .............................................................................................................. K–3
K.4 An Existing Satellite ACM Scheme ........................................................................................... K–7
K.5 Disadvantages of DVB-S2 ......................................................................................................... K–7
K.6 VersaFEC ACM ........................................................................................................................... K–8
K.6.1 VersaFEC ACM Latency ......................................................................................................... K–10
K.6.2 Configuring VersaFEC ACM ................................................................................................... K–12
K.7 VersaFEC-2 ACM and CCM...................................................................................................... K–16
K.7.1 VersaFEC-2 ACM Latency ...................................................................................................... K–20
K.7.2 Configure VersaFEC-2 ACM ................................................................................................... K–21
K.8 Monitoring A CM Performance ................................................................................................ K–23
K.9 ACM Congestion Control ........................................................................................................ K–23
K.10 Using ACM with AUPC ............................................................................................................. K–24
K.11 Notes and Recommendations ................................................................................................. K–25
K.12 Summary of Specifications ..................................................................................................... K–27
K.12.1 VersaFEC ACM ....................................................................................................................... K–27
K.12.2 VersaFEC-2 ACM.................................................................................................................... K–29
APPENDIX L. IP SUB-MUX ................................................................................................................. L–1
L.1 Overview ...................................................................................................................................... L–1
L.2 Available Ratios ........................................................................................................................... L–1
L.3 Data Rate vs. Composite Rate ................................................................................................... L–2
APPENDIX M. QUALITY OF SERVICE (QOS) ................................................................................... M–1
M.1 Overview ..................................................................................................................................... M–1
M.1.1 QoS Terminology ..................................................................................................................... M–1
M.2 Layer 2 QoS ................................................................................................................................ M–2
M.2.1 Modem Tx Data Rate vs. QoS Tx Data Rate ........................................................................... M–2
M.2.2 Flow Control ............................................................................................................................. M–3
M.2.3 Port-based Layer 2 QoS .......................................................................................................... M–3
M.2.4 VLAN-based Layer 2 QoS ....................................................................................................... M–5
M.3 Layer 3 QoS ................................................................................................................................ M–8
M.3.1 Layer 3 QoS Max-Pri Mode ..................................................................................................... M–8
M.3.2 Layer 3 QoS Min-Max Mode .................................................................................................. M–10
M.3.3 Layer 3 QoS DiffServ Mode ................................................................................................... M–12
M.3.3.1 Layer 3 QoS Congestion Avoidance .......................................................................... M–12
M.3.3.2 Layer 3 QoS List of Supported RFCs (Requests for Comment) ................................ M–13
M.4 QoS with Adaptive Coding and Modulation (ACM) ............................................................... M–14
M.4.1 Maximum Clipping ................................................................................................................. M–14
M.4.2 Minimum Data Rate ............................................................................................................... M–14
APPENDIX N. TRANSMIT SPECTRUM FILTERING OPTIONS .........................................................N–1
N.1 Overview ..................................................................................................................................... N–1
N.2 Observations and Recommendations ..................................................................................... N–1
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APPENDIX O. RADIUS CLIENT.......................................................................................................... O–1
O.1 Overview ..................................................................................................................................... O–1
O.1.1 RADIUS List of Supported RFCs (Requests for Comment) .................................................... O–1
O.2 Service Types ............................................................................................................................. O–2
O.3 RADIUS Client............................................................................................................................. O–3
O.4 RADIUS Operation and Configuration ..................................................................................... O–4
O.4.1 RADIUS Operation Using the Front Panel .............................................................................. O–6
O.4.2 RADIUS M&C Using the HTTP (Web Server) Interface .......................................................... O–6
O.4.3 RADIUS M&C Using Telnet...................................................................................................... O–6
APPENDIX P. FTP MODEM-TO-MODEM CONFIGURATION ............................................................ P–1
P.1 Overview ...................................................................................................................................... P–1
P.2 Perform the FTP Modem Configuration Procedure ................................................................. P–2
P.2.1 Create the Modem Configuration File From the Source Modem .............................................. P–2
P.2.2 Use the Modem Configuration File to Configure a Target Modem ........................................... P–3
LIST OF TABLES
Table 1-1. Optional Hardware and Accessories ........................................................................................ 1–6
Table 1-2. FAST and FAST-accessible Hardware Options ....................................................................... 1–7
Table 1-3. Front Panel Descriptions and Functions ................................................................................ 1–11
Table 1-4. Rear Panel Connectors and Functions .................................................................................. 1–13
Table 1-5. VersaFEC ModCod Set .......................................................................................................... 1–30
Table 1-6. The VersaFEC-2 ModCod Set – Long Block.......................................................................... 1–32
Table 1-7. The VersaFEC-2 ModCod Set – Short Block ......................................................................... 1–33
Table 3-1. Rear Panel Connections .......................................................................................................... 3–5
Table 3-2. Data Interface Connector Pinouts ............................................................................................ 3–6
Table 3-3. Balanced G.703 Connector Pinouts ......................................................................................... 3–8
Table 3-4. Auxiliary G.703 Connector Pinouts ........................................................................................... 3–9
Table 3-5. Data Cabling Accessories ........................................................................................................ 3–9
Table 3-6. CA-0000163 Connector Pinouts ............................................................................................ 3–10
Table 3-7. CA-0000164 Connector Pinouts ............................................................................................ 3–11
Table 3-8. Quad E1 Balanced/Unba lanc e d Adapter Kits ........................................................................ 3–12
Table 3-9. CA-0000347/CA-0020710 Connector Pin outs ....................................................................... 3–12
Table 3-10. Remote Control Connector Pinouts ..................................................................................... 3–14
Table 3-11. Alarm Interface Connector Pinouts ....................................................................................... 3–15
Table 3-12. PMSI Connector Pinouts ...................................................................................................... 3–16
Table 3-13. 1:1 Control Interface Connector Pinouts .............................................................................. 3–17
Table 3-14. AC Chassis Power Interface Features and Description ....................................................... 3–19
Table 3-15. AC Chassis Power Specifications ........................................................................................ 3–19
Table 3-16. AC Operation Accessories ................................................................................................... 3–20
Table 3-17. DC Chassis Power Interface Features and Description ...................................................... 3–22
Table 3-18. DC Chassis Power Specifications ........................................................................................ 3–22
Table 3-19. DC Operation Accessories (Optional) .................................................................................. 3–23
Table 4-1. Firmware Update File Information ............................................................................................ 4–2
Table 6-1. Front Panel Descriptions and Functions .................................................................................. 6–1
Table B-1. The VersaFEC ModCod Set .................................................................................................... B–2
Table B-2. Extended CCM Codes ............................................................................................................. B–4
Table B-3. ULL Codes ............................................................................................................................... B–4
Table F-1. Spectral Efficiency using DoubleTalk Carrier-in-Carrier ........................................................... F–7
Table F-2. Margin Requirements ............................................................................................................... F–9
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Table F-3. Symmetrical Data Rate Link Example ................................................................................... F–10
Table F-4. Link Budget Summary for ModCod Combinations ................................................................. F–13
Table F-5. HPA Power Reduction ............................................................................................................ F–13
Table F-6. Asymmetric Data Rate Link Example ..................................................................................... F–14
Table F-7. Asymmetric Data Rate Link Savings Summary ..................................................................... F–14
Table F-8. QPSK and LDPC ¾ Link Requirements ................................................................................ F–14
Table F-9. Power Limited Links Example ................................................................................................ F–15
Table F-10. Carrier-in-Carrier Link Savings Summary ............................................................................ F–16
Table F-11. PSD Ratio Example.............................................................................................................. F–20
Table J-1. Field Upgrade Required Parts .................................................................................................. J–9
Table K-1. The VersaFEC ModCod Set ..................................................................................................... K–9
Table K-2. VersaFEC Implementation of ACM – 100 ksymbols/sec Example Case ............................... K–11
Table K-3. The VersaFEC-2 ModCod Set – Long Block .........................................................................K–17
Table K-4. The VersaFEC-2 ModCod Set – Short Block ........................................................................K–18
Table K-5. VersaFEC-2 End-to-End Latency @ 100 ksps ......................................................................K–20
Table K-6. VersaFEC ACM ModCods .....................................................................................................K–28
Table L-1. Subsystem Multiplex Available Ratios ...................................................................................... L–1
Table M-1. Modem Tx Data Rate vs. QoS Tx Data Rate (Hardware-limited) .......................................... M–2
Table M-2. 802.1q to Layer 2 QoS Priority Conversion ........................................................................... M–5
Table O-1. RADIUS Service Types .......................................................................................................... O–2
LIST OF FIGURES
Figure 1-1. CDM-425 Advanced Satellite Modem..................................................................................... 1–1
Figure 1-2. Dimensional Envelope .......................................................................................................... 1–10
Figure 1-3. Front Panel Features ............................................................................................................ 1–11
Figure 1-4. Rear Panel View – AC Connection ....................................................................................... 1–12
Figure 1-5. Rear Panel View – DC Connection ...................................................................................... 1–12
Figure 1-6. Transmit Power Spectral Density Tx Alpha 0.05 to 0.20 ...................................................... 1–17
Figure 1-7. Transmit Power Spectral Density TX Alpha 0.25 and 0.35 ................................................... 1–18
Figure 1-8. Rx Carrier Level vs. Symbol Rate – L-Band (950-22 50 MH z) ............................................. 1–25
Figure 1-9. Rx Carrier Level vs. Symbol Rate – IF Band (50-180 MHz) ................................................ 1–25
Figure 2-1. Unpack and Inspect the Shipment .......................................................................................... 2–1
Figure 2-2. Modem - Rack Enclosure Installation ..................................................................................... 2–4
Figure 2-3. Rear-Mounting Support Brackets Kit Installation (Optional) ................................................... 2–5
Figure 3-1. Coaxial Connector Examples ................................................................................................. 3–1
Figure 3-2. D-Subminiature Connector Examples .................................................................................... 3–3
Figure 3-3. Rear Panel – AC Connection .................................................................................................. 3–4
Figure 3-4. Rear Panel – DC Connection ................................................................................................. 3–4
Figure 3-5. CA-0000163 Adapter Cable (DB-9M (2X) DB-15F) ......................................................... 3–10
Figure 3-6. CA-0000164 Adapter Cable (DB-9M (2X) RJ-48F) .......................................................... 3–11
Figure 3-7. Quad E1 Balanced/Unbalanced Adapter Cable Kits ............................................................ 3–12
Figure 3-8. Chassis Ground Interface – AC Chassis (CEFD P/N PL-0021674) ..................................... 3–18
Figure 3-9. Chassis Ground Interface – DC Chassis (CEFD P/N PL-0021408) ..................................... 3–18
Figure 3-10. AC Chassis Power Interf ac e (CEFD P/N PL/1 258 7-1) ....................................................... 3–19
Figure 3-11. AC Power Connection ......................................................................................................... 3–20
Figure 3-12. AC Fuse Replacement ........................................................................................................ 3–21
Figure 3-13. DC Chassis Power Interface (Optional) (CEFD P/N PL-0021327) .................................... 3–22
Figure 3-14. DC Chassis Connection (Optional) .................................................................................... 3–23
Figure 3-15. DC Chassis Fuse Replacement (Optional) ........................................................................ 3–24
Figure 4-1. Modem to PC Connection ...................................................................................................... 4–3
Figure 4-2. Modem On/Off Switch ............................................................................................................. 4–4
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Figure 4-3. Admin | Firmware | Pages ....................................................................................................... 4–5
Figure 4-4. Temporary Folder Using Windows Desktop ........................................................................... 4–6
Figure 4-5. Temporary Folder Using Windows Explorer ........................................................................... 4–6
Figure 4-6. Temporary Folder Using Run and Browse ............................................................................. 4–7
Figure 4-7. Temporary Folder Using Windows Command Line ................................................................ 4–7
Figure 4-8. Windows Command Line Prompt ........................................................................................... 4–8
Figure 4-9. Archive File Transfer to Temporary Folder.............................................................................. 4–9
Figure 4-10. Ping Command Line ........................................................................................................... 4–11
Figure 4-11. Firmware Verification on Admin Page ................................................................................. 4–15
Figure 4-12. Firmare Verification on Home Page ................................................................................... 4–16
Figure 5-1. HTTP Interface – ‘Admin | FAST’ Page .................................................................................. 5–4
Figure 6-1. Front Panel Features .............................................................................................................. 6–1
Figure 6-2. CDM-425 Principle Menu Tree (FW Ver. 1.1.1) ...................................................................... 6–7
Figure 6-3. Loopback Modes .................................................................................................................. 6–76
Figure 7-1. Telnet Command Line Interface (CLI) ..................................................................................... 7–7
Figure 7-2. HTTP (Web Server) Interface Menu Tree (FW Ver. 1.1.1r) .................................................. 7–12
Figure 7-3. Home | Home Page .............................................................................................................. 7–15
Figure 7-4. Home | Contact Page ........................................................................................................... 7–16
Figure 7-5. Home | Support Page ........................................................................................................... 7–17
Figure 7-6. Admin | Access Page ............................................................................................................ 7–18
Figure 7-7. Admin | SNMP Page ............................................................................................................. 7–21
Figure 7-8. Admin | Firmware | Base Modem Page ................................................................................ 7–22
Figure 7-9. Admin | Firmware | Packet Processor Page ......................................................................... 7–24
Figure 7-10. Admin | Reboot Page .......................................................................................................... 7–25
Figure 7-11. Admin | FAST Page ............................................................................................................. 7–26
Figure 7-12. Admin | Utilities Page .......................................................................................................... 7–28
Figure 7-13. Configuration | Modem Page (Non-ACM Modes) ............................................................... 7–30
Figure 7-14. Configuration | Modem Page (IP-ACM Mode) .................................................................... 7–31
Figure 7-15. Configuration | Modem Page (VersaFEC2-ACM Mode) ..................................................... 7–32
Figure 7-16. Configuration | LAN | IP Page ............................................................................................. 7–34
Figure 7-17. Configuration | LAN | ARP Page ......................................................................................... 7–38
Figure 7-18. Configuration | LAN | Port Monitoring Page ....................................................................... 7–39
Figure 7-19. Configuration | Rout ing | Routes Page ............................................................................... 7–40
Figure 7-20. Configuration | Rout ing | IGM P Page ................................................................................. 7–42
Figure 7-21. Configuration | Rout ing | DHC P Page ................................................................................ 7–44
Figure 7-22. Configuration | Rout ing | DNS Page ................................................................................... 7–45
Figure 7-23. Configuration | Manage d Switc h Pa ge ............................................................................... 7–46
Figure 7-24. Configuration | WAN | QoS Page (Disabled) ...................................................................... 7–47
Figure 7-25. Configuration | WAN | QoS Page (Configured) .................................................................. 7–48
Figure 7-26. Configuration | WAN | QoS Page (DiffServ Mode) ............................................................. 7–53
Figure 7-27. Configuration | WAN | Compression Page ......................................................................... 7–56
Figure 7-28. Configuration | WAN | Encryption Page.............................................................................. 7–57
Figure 7-29. Configuration | Overhe ad Pa ge – AUPC Mode .................................................................. 7–60
Figure 7-30. Configuration | Overhe ad Pa ge – CnC-APC Mode ............................................................ 7–60
Figure 7-31. Configuration | Utilities | Utilities1 Page .............................................................................. 7–62
Figure 7-32. Configuration | Utilit ies | Carri er ID Page ............................................................................ 7–64
Figure 7-33. Configuration | D&I Page (Selected Framing Mode = D&I) ................................................ 7–66
Figure 7-34. Configuration | BUC Page .................................................................................................. 7–67
Figure 7-35. Configuration | LNB Page ................................................................................................... 7–68
Figure 7-36. Configuration | ANT | PTP Page ......................................................................................... 7–69
Figure 7-37. Configuration | ANT | SNTP Page ...................................................................................... 7–71
Figure 7-38. Configuration | MEO Page .................................................................................................. 7–72
Figure 7-39. Status | Modem Status Page (IP-ACM or V2-ACM Mode Not Active) ................................ 7–74
Figure 7-40. Status | Modem Status Page (IP-ACM or V2-ACM Mode Active)....................................... 7–75
Figure 7-41. Status | Modem Logs | Base Modem Page ........................................................................ 7–76
Figure 7-42. Status | Modem Logs | Packet Processor Page ................................................................. 7–79
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Figure 7-43. Status | Modem Info Page .................................................................................................. 7–80
Figure 7-44. Status | Traffic Statistics | Ethernet Page ............................................................................ 7–82
Figure 7-45. Status | Traffic Statistics | Router Page............................................................................... 7–83
Figure 7-46. Status | Traffic Statistics | Managed Switch Page ............................................................... 7–84
Figure 7-47. Status | Traffic Statistics | WAN Page (IP Packet Processor Not Installed or Disabled) .... 7–85
Figure 7-48. Status | Traffic Statistics | WAN Page (IP Packet Processor Installed) .............................. 7–86
Figure 7-49. Status | Traffic Statistics | Compression Page .................................................................... 7–88
Figure 7-50. Status | Traffic Statistics | QoS Page .................................................................................. 7–89
Figure 7-51. Status | Traffic Statistics | PTP Page .................................................................................. 7–90
Figure 7-52. Status | Traffic Statistics | MAC Table Page ........................................................................ 7–93
Figure 7-53. Status | Traffic Statistics | Clear Counters Page ................................................................. 7–94
Figure 7-54. Status | Performance | Performance Page ......................................................................... 7–95
Figure 7-55. Status | Performance | Graphs Page .................................................................................. 7–96
Figure 7-56. ODU | Enable Page ............................................................................................................ 7–97
Figure 7-57. ODU | Config Page ............................................................................................................. 7–97
Figure 7-58. ODU | Status Page ............................................................................................................. 7–98
Figure 7-59. ODU | Utilities Page ............................................................................................................ 7–98
Figure 7-60. Redundanc y Page .............................................................................................................. 7–99
Figure 9-1. Unsaved Changes Window .................................................................................................... 9–9
Figure 9-2. Content Exceeds Defined Window Height ........................................................................... 9–10
Figure 10-1. Front Panel ODU Operation Menu Tree – (FW Ver. 1.1.1) ................................................ 10–4
Figure 10-2. HTTP (Web Server) Interface Home Page ....................................................................... 10–38
Figure 10-3. HTTP (Web Server) Interface Menu Tree (FW Ver. 1.1.1) ............................................... 10–39
Figure 10-4. Configuration | BUC Page ................................................................................................ 10–40
Figure 10-5. Configuration | LNB Page ................................................................................................. 10–41
Figure 10-6. Status | Modem Logs | Base Modem Page ...................................................................... 10–42
Figure 10-7. ODU | Enable Page .......................................................................................................... 10–44
Figure 10-8. ODU | Error Connection Message Page .......................................................................... 10–45
Figure 10-9. ODU | Error Enable Message Page ................................................................................. 10–45
Figure 10-10. ODU | Config Page (CSAT-5060) ................................................................................... 10–46
Figure 10-11. ODU | Config Page (KST-2000A/B) ................................................................................ 10–48
Figure 10-12. ODU | Status Page (CSAT-5060) ................................................................................... 10–50
Figure 10-13. ODU | Status Page (KST-2000A/B) ................................................................................ 10–51
Figure 10-14. ODU | Utilities Page (CSAT-5060) .................................................................................. 10–52
Figure 10-15. ODU | Utilities Page (KST-2000A/B) .............................................................................. 10–54
Figure 10-16. Telnet Command Line Interface (CLI)Tera Term Example ............................................. 10–55
Figure 10-17. Telnet Command Line Interface (CLI) PuTTY Example ................................................. 10–56
Figure A-1. EIA-530 to EIA-422/449 DCE Conversion Cable (CEFD P/N CA/WR0049) ......................... A-2
Figure A-2. EIA-530 to V.35 DCE Conversion Cable ................................................................................ A-3
Figure A-3. EIA-232 Remote Control Cable (“Remote Control” Port to User PC 9-Pin Serial Port) ......... A-4
Figure B-1. VersaFEC Codes versus Shannon Capacity ......................................................................... B–3
Figure B-2. VersaFEC Codec Rate 0.488 BPSK ...................................................................................... B–6
Figure B-3. VersaFEC Codec Rates 0.533, 0.631, 0.706, and 0.803 QPSK ............................................ B–7
Figure B-4. VersaFEC Codec Rates 0.642, 0.711, and 0.780 8-QAM...................................................... B–8
Figure B-5. VersaFEC Codec Rates 0.731, 0.780, 0.829, and 0.853 16-QAM ........................................ B–9
Figure B-6. VersaFEC Codec Extended CCM Rate 0.576 8-QAM and Rate 0.644 16-QAM ................B–10
Figure B-7. ULL Codec Rate 0.493 BPSK/QPSK and Rates 0.654 and 0.734 QPSK ........................... B–11
Figure B-8. VersaFEC-2 Short Block ......................................................................................................B–13
Figure B-9. VersaFEC-2 Short Block ......................................................................................................B–14
Figure E-1. TX Clock Modes ..................................................................................................................... E–3
Figure E-2. RX Clock Modes..................................................................................................................... E–5
Figure E-3. Supported T1 and E1 Framing Formats ................................................................................. E–7
Figure E-4. Drop and Insert Clocking ........................................................................................................ E–9
Figure E-5. Single-Source Mult iple Modems (Looming) .........................................................................E–10
Figure E-6. Single-Source Mult iple Mod ems (Daisy-chain) ....................................................................E–10
Figure E-7. G.703 Clock Extension Mode 1 ............................................................................................E–13
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Figure E-8. G.703 Clock Extension Mode 2 ............................................................................................E–14
Figure E-9. G.703 Clock Extension Mode 3 ............................................................................................E–15
Figure E-10. Quad E1 Operation ............................................................................................................E–17
Figure F-1. Conceptual Block Diagram ..................................................................................................... F–3
Figure F-2. Conventional FDMA Link ........................................................................................................ F–5
Figure F-3. Same Link Using CDM-425 Advanced Satellite Modem and DoubleTalk Carrier-in-Carrier . F–6
Figure F-4. Duplex Link Optimization ........................................................................................................ F–6
Figure F-5. DoubleTalk Carrier-in-Carrier Signals..................................................................................... F–8
Figure F-6. Carrier-in-Carrier Signal Process ing Bloc k Diagram .............................................................. F–9
Figure F-7. Symmetric Data Rate Traditional Link .................................................................................. F–11
Figure F-8. Link Parameters and LST Summary for QPSK, LDPC 2/3 with Carrier-in-Carrier .............. F–12
Figure F-9. CnC Automated Power Control ............................................................................................ F–23
Figure G-1. (Co+No)/No Measured Example .......................................................................................... G–2
Figure G-2. Eb/No T able .......................................................................................................................... G–3
Figure I-1. Ethernet Architecture Design .................................................................................................... I–2
Figure I-2. Improper Use of External Ethernet Switch ............................................................................... I–3
Figure I-3. Ethernet Networking Loop Example (Simplified) ...................................................................... I–3
Figure I-4. Networking Loop Example ........................................................................................................ I–4
Figure I-5. Hub-to-Hub with Standard Traffic Using Routers ..................................................................... I–5
Figure I-6. Hub-to-Remotes with Standard Traffic Using Routers or Switches .......................................... I–6
Figure I-7. Point-to-Point Configuration in “Router Multipoint Hub” Working Mode ................................... I–7
Figure I-8. Point-to-Multipoint Using Routers ............................................................................................. I–8
Figure I-9. Point-to-Multipoint Using Switches ........................................................................................... I–9
Figure I-10. Point-to-Multipoint (Router Multipoint Hub Mode) ................................................................ I–10
Figure I-11. Multicast Routing Diagram .................................................................................................... I–12
Figure I-12. Multicast Routing Network Configuration Example .............................................................. I–13
Figure I-13. Point-to-Point Network with PTP Configuration Example ..................................................... I–16
Figure I-14. PTP Master/Slave Assignment Example .............................................................................. I–18
Figure K-1. ACM-over-Satellite – Generic Example ................................................................................. K–5
Figure K-2. VersaFEC Codes vs. Constrain ed Capac it y ........................................................................K–10
Figure K-3. ACM ModCod Switch Points ................................................................................................K–14
Figure K-4. VersaFEC-2 Codes vs. Constrained Capacity (typical values shown) ................................K–19
Figure K-5. ACM Congestion Control ......................................................................................................K–24
Figure M-1. IEEE 802.1q VLAN priorit y ................................................................................................... M–5
Figure O-1. RADIUS Authentication Process........................................................................................... O–3
Figure P-1. Windows Command Line ....................................................................................................... P–2
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AC
Alternating Current
AES
Revision 0
Acronym List
Acronym Description
ACM Adaptive Coding and Modulation
Advanced Encryption Standard
ANT Advanced Network Timing
AUPC Automatic Uplink Power Control
BER Bit Error Rate
BUC Block Up Converter
CCM Constant Coding and Modulation
CLI Command Line Interface
CMOS Complementary Metal Oxide Semiconductor
CnC Carrier-in-Carrier
CnC-APC Carrier-in-Carrier Automatic Power Control
D&I Drop and Insert
DC Direct Current
DCE Dat a Circuit-termination Equipment
DDI Drop Data In
DDO Drop Data Out
DHCP Dynamic Host Configuration Protocol
DNS Domain Name System
DPD Differential Path Delay
DTE Data Terminal Equipment
EDMAC Embedded Distant-end Monitor and Control
EMC ElectroMagnetic Compatibility
ERM Electromagnetic compatibility and Radio Spectrum Matters
ESA EDMAC Slave Address
ETSI European Telec ommunications Standards Institute
FAST Fully Accessible System T opology
FEC Forward Error Correction
FER Frame Error Rate
FIFO First In First Out
FPGA Field-programmable Gate Array
FSK Frequency Shift Keying
FTP File Transfer Protocol
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Acronym Description
HTS High Throughput Satellites
HTTP Hypertext Transfer Protocol
IDI Insert Data In
IDO Insert Data Out
IGMP Internet Group Management Protocol
LAN Local Area Network
LDPC Low Density Parity Check
LED Light Emitting Diode
LNB Low Noise Block Down Converter
M&C Monitor and Control
MEO Medium Earth Orbit
ODU Outdoor Unit
PLL Phased Locked Loop
PMSI Pre-Mapped Symbol Interface
POCO Power-on Carrier-off
PTP Precision Time Protocol
QDI Quad Drop & Insert
QoS Quality of Service
R-MPHub Router Multipoint-to-Hub
R-MPRm Router Multipoint-to-Remove
R-Ptop Router Point-to-Point
RADIUS Remote Authentication Dial In User Service
RTC Real Time Clock
SAR Segmentation and Reassembly
SCT Serial Clock Transmit
SLE Streamline Encapsulation
SNMP Simple Mail Transfer Protocol
SNTP Simple Network Time Protocol
Txα Transmit Alpha Filter Rolloff Factor
ULL Ultra Low Latency
VFD Vacuum Fluorescent Display
VFEC-2 VersaFEC-2®
VLAN Virtual Local Area Network
VSAT Very Small Apeture T erminal
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Acronym Description
WAN Wide Area Network
WRT Wireless Receiver/Transmitter
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PREFACE
About this Manual
This manual provides installation and operation information for the Comtech EF Data CDM-425
Advanced Satellite Modem. This is a document intended for the persons responsible for the
operation and maintenance of the CDM-425 Advanced Satellite Modem.
Conventions and References
Patents and Trademarks
See all of Comtech EF Data's 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 Signa l Tec hnology”.
• DoubleTalk® is a registered trademark of “Raytheon Applied Signal Technology”.
• Carrier-in-Carrier® is a registered trademark of Comtech EF Data.
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.
Preface xxi MN-CDM-425
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Revision
Recommended Standard Designations
The new designation of the Electronic Industries Association (EIA) supersedes the
Recommended Standard (RS) designations. References to the old designations may be
shown when depicting actual text (e.g., RS-232) displayed on the Front Panel menus, Web
Server pages, serial remote interface, Telnet Command Line Interface (CLI), or unit rear
panel. All other references in the manual refer to EIA designations.
CAUTION – You must carefully review the following information.
Safety and Compliance
Electrical Safety and Compliance
The unit complies with the EN 60950 Safety of Information Technology Equipment (Including
Electrical Business Machines) safety standard.
Grounding
CAUTION – If the unit is operated in a vehicle or movable installation, make sure
the unit is stable. Otherwise, EN 60950 safety is not guaranteed.
Sect. 3.3 CDM-425 Ground and Power connections
CAUTION – PROPER GROUNDING PROTECTION IS REQUIRED: The installation
instructions require that the integrity of the protective earth must be ensured
and that the equipment shall be connected to the protective earth connection at
all times.
The CDM-425 Advanced Satellite Modem is designed for connection to a power
system that has separate ground, line and neutral conductors. The equipment is
not designed for connection to a power system that has no direct connection to
ground. It is therefore imperative during installation, configuration, and
operation for you to ensure that the unit has been properly grounded using the
ground stud provided on the rear panel of the unit.
• In Finland: "Laite on liitettävä suojamaadoituskoskettimilla varustettuun
pistorasiaan."
• In Norway: “Apparatet må tilkoples jordet stikkontakt.”
• In Sweden: “Apparaten skall anslutas till jordat uttag.”
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Revision
Electrical Installation
The unit is rated for a nominal operating range of 100-240 volts AC; for the appropriately
equipped DC option, nominal operating range is 43-60 volts DC. The unit has a maximum power
consumption of 300 watts.
The installation and connection to the line supply must be made in compliance to local or national
wiring codes and regulations.
The CDM-425 Advanced Satellite Modem is shipped with a line inlet cable suitable for use in the
country of operation. If it is necessary to replace this cable, ensure the replacement has an
equivalent specification.
Examples of acceptable ratings for the cable include HAR, BASEC and HOXXX-X.
Examples of acceptable connector ratings include VDE, NF-USE, UL, CSA, OVE, CEBEC,
NEMKO, DEMKO, BS1636A, BSI, SETI, IMQ, KEMA-KEUR and SEV.
Battery
WARNING! THE MODEM CONTAINS A LITHIUM BATTERY. DANGER OF EXPLOSION
EXISTS IF THE BATTERY IS INCORRECTLY REPLACED. REPLACE ONLY WITH THE SAME OR
EQUIVALENT TYPE RECOMMENDED BY THE MANUFACTURER. DISPOSE OF USED BATTERIES IN
ACCORDANCE WITH LOCAL AND NATIONAL REGULATIONS.
Fuses
CAUTION – FOR CONTINUED OPERATOR SAFETY, ALWAYS REPLACE THE FUSES WITH THE
CORRECT TYPE AND RATING.
The CDM-425 Advanced Satellite Modem is fitted with two fuses:
• For AC operation, the unit requires two common 4 Amp/250 volts 20mm x 5mm Slow-blow
fuses that are contained within a fuse holder that is press-fit into the body of the IEC power
inlet module (on the rear panel of the unit).
• For DC operation, the unit requires two different fuses that are contained within the individual
screw-in receptacles below the terminal block (on the rear panel of the unit).
These DC fuse requirements are as follows:
o Modem Operation – 3 Amp/250 volts 20mm x 5mm Slow-blow fuse.
o BUC Operation – 6.3 Amp/250 volts 20mm x 5mm Slow-blow fuse.
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Operating Environment
CAUTION – DO NOT OPERATE THE UNIT IN ANY OF THESE EXTREME
OPERATING CONDITIONS:
• AMBIENT TEMPERATURES LESS THAN 0°C (32°F) OR MORE THAN 50°C
(122°F). (MAXIMUM STORAGE TEMPERATURE ALLOWED IS -25°C (-13°F)
TO 85°C (185°F)).
• PRECIPITATION, CONDENSATION, OR HUMID ATMOSPHERES OF MORE
THAN 95% RELATIVE HUMIDITY.
• UNPRESSURIZED ALTITUDES OF MORE THAN 2000 METRES (6561.7
FEET).
• EXCESSIVE DUST.
• FLAMMABLE GASES.
• CORROSIVE OR EXPLOSIVE ATMOSPHERES.
European Union Radio Equipment and Telecommunications Terminal
Equipment (R&TTE) Directive (1999/5/EC) and EN 301 489-1
Independent testing verifies that the unit complies with the European Union R&TTE Directive, its
reference to EN 301 489-1 (Electromagnetic compatibility and Radio spectrum Matters [ERM];
ElectroMagnetic Compatibility [EMC] standard for radio equipment and services, Part 1: Common
technical requirements), and the Declarations of Conformity for the applicable directives,
standards, and practices that follow:
European Union Electromagnetic Compatibility (EMC) Directive
(2004/108/EC)
• Emissions: EN 55022 Class B – Limits and Methods of Measurement of Radio Interference
Characteristics of Information Technology Equipment.
• Immunity: EN 55024 – Information Technology Equipment: Immunity Characteristics, Limits,
and Methods of Measurement.
• EN 61000-3-2 – Harmonic Currents Emission
• EN 61000-3-3 – Voltage Fluctuations and Flicker.
• Federal Communications Commission Federal Code of Regulation FCC Part 15,
Subpart B.
TO ENSURE THAT THE UNIT COMPLIES WITH THESE STANDARDS, OBEY
THESE INSTRUCTIONS:
• Use coaxial cable that is of good quality (e.g., RG58/U (50Ω) or RG59/U (75Ω)) for
connections to the IF Tx and Rx (transmit and receive) BNC female connectors.
• Use Type 'D' connectors that have back-shells with continuous metallic shielding.
Type ‘D’ cabling must have a continuous outer shield (either foil or braid, or both). The shield
must be bonded to the back-shell.
• Operate the unit with its cover on at all times.
Preface xxiv MN-CDM-425
CDM-425 Advanced Satellite Modem
Alternating Current
Protective Earth
!
Revision
European Union Low Voltage Directive (LVD) (2006/95/EC)
Symbol Description
<HAR> Type of power cord required for use in the European Community.
CAUTION: Double-pole/Neutral Fusing
ACHTUNG: Zweipolige bzw. Neutralleiter-Sicherung
International Symbols
Symbol Definition Symbol Definition
Fuse
For additional symbols, refer to Warn ings, Cautions and Notes listed earlier in this
Preface.
Chassis Ground
European Union RoHS Directive (2002/95/EC)
This unit satisfies (with exemptions) the requirements specified in the European Union Directive
on the Restriction of Hazardous Substances in Electrical and Electronic Equipment (EU RoH S,
Directive 2002/95/EC).
European Union Telecommunications Terminal Equipment Directive
(91/263/EEC)
In accordance with the European Union Telecommunications Terminal Equipment Directive
91/263/EEC, do not directly connect t he uni t to the Public Telecommunications Network.
CE Mark
Comtech EF Data declares that the unit meets the necessary requirements for the CE Mark.
Product Support
Preface xxv MN-CDM-425
For all product support, please call:
+1.240.243.1880
+1.866.472.3963 (toll free USA)
CDM-425 Advanced Satellite Modem
Revision
Comtech EF Data Headquarters
http://www.comtechefdata.com
Comtech EF Data Corp.
2114 West 7th Street
Tempe, Arizona USA 85281
+1.480.333.2200
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 option,
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 C omtech 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.
Preface xxvi MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision
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.
Exclusive Remedies
Comtech EF Data Corporation ’s warr anty, as stated is in lieu of all other warranties, expressed,
implied, or statutory, including those of merchantability and fitness for a particular purpose. The
buyer shall pass on to any purchaser, lessee, or other user of Comtech EF Data Corporation’s
products, the aforementioned warranty, and shall indemnify and hold harmless Comtech EF Data
Corporation from any claims or liability of such purchaser, lessee, or user based upon allegations
that the buyer, its agents, or employees have made additional warranties or representations as to
product preference or use.
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.
Preface xxvii MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision
Notes:
Preface xxviii MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
Chapter 1. INTRODUCTION
1.1 Overview
Appendix N. TRANSMIT SPECTRUM FILTERING OPTIONS
The CDM-425 Advanced Satellite Modem (Figure 1-1) is intended for closed network
applications. It is backwards compatib le with the CDM-625 and CDM-625A in VersaFEC modes.
It is also backwards compatible with the CDM-625A in VersaFEC-2 modes.
• It is compact – 1RU high and 14.0 inches deep – and consumes 43 watts (typical) with
AC supply and Packet Processor, and 40 watts (typical) with DC supply and Packet
Processor.
• It features front panel Light Emitting Diode (LED) Indicators, a keypad, and a Vacuum
Fluorescent Display (VFD) for local configuration and monitoring and control (M&C). It
also can be fully remote-controlled through its serial remote control or Ethernet-based
HTTP (Web Server), SNMP or Telnet Command Line interfaces.
• It provides a full range of built-in (i.e., no plug-in cards required) traffic data interface
types, including EIA-530/422, V.35, G.703 E1/T1 types, Quad E1 Drop and Ins ert , and
10/100 Ethernet.
• Its IF frequency range simultaneously covers 50-180 MHz and 950-2250 MHz. The
extension to 2250 MHz is to address the needs of future high-throughput satellites (HTS).
Figure 1-1. CDM-425 Advanced Satellite Modem
Introduction 1–1 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
• It supports an entirely new family of waveforms – VersaFEC and VersaFEC-2® that are
optimized for both ACM and CCM operations. A total of 92 Modcods are offered,
providing a toolbox that permits a user to optimize power efficiency, spectral efficiency,
latency, or a combination of all three.
• It offers variable data rates, from 18 kbps to 25 Mbps, in BPSK, QPSK, 8-QAM, 8-ARY,
16-QAM, 16-ARY, and 32-ARY modes.
• It supports a complete range of transmit filter options (spectrum shaping). Transmit
alphas of 0.05, 0.10, 0.15 0.20, 0.25 and 0.35 are included, which in turn permits you to
reduce channel spacing as transmit alpha (and hence occupied bandwidth) reduces,
providing potentiall y significant gains in transponder band width ef ficiency. See Appendix
N. TRANSMIT SPECTRUM FILTERING OPTIONS for important information about these
options.
• Its demod design incorporates fast acquisition, optimal composite power handling.
• It includes VersaFEC a nd Ver saF EC-2 Adaptive Coding and Modulation in the base
hardware to increase capacity on IP links.
®
• It includes DoubleTalk
Carrier-in-Carrier® in the base hardware, and no longer requires
a separate plug-in card. (However, FAST codes are still required to activate this option.)
• It can be equippe d w ith an optiona l
IP Packet Processor card that, in addition to providing
Layer 3 functionality, incorporates a number of key features for Wide Area Network
(WAN) bandwidth optimization: very low overhea d Stre amline Encapsulation (SLE ) ,
Header and Payload Compression, Advanced Quality of Service (QoS), and Advanced
Encryption Standard (AES) Encryption.
• IEEE-1588v2 Precision Timing Protocol (PTP) and Jumbo Frame Support are available
options.
Introduction 1–2 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
1.2 Functional Description
The CDM-425 Advanced Satellite Modem has two fundamentally different types of interface - IF
and data:
• The IF interface provides a bidirectional link with the satellite via the uplink and downlink
equipment.
• The data interface is a bidirectional path that connects with the customer’s equipment
(assumed to be the Data Terminal Equipment (DTE)) and the modem (assumed to be the
Data Circuit-termination Equipment (DCE)).
Transmit data is received by the terrestrial interface where line receivers convert the clock and
data signals to Complementary Metal Oxide Semiconductor (CMOS) levels for further processing.
A small First In First Out (FIFO) follows the terrestrial interface to facilitate the various clocking
and framing options. If framing is enabled, the transmit clock and data output from the FIFO pass
through the framer, where the overhead data (Drop and Insert (D&I) or Embedded Distant-end
Monitor and Control (EDMAC)) is added to the main data; otherwise, the clock and data are
passed directly to the forward error correction (FEC) encoder.
In the FEC encoder, the data is differentially encoded, scrambled, and then convolutionally or
block encoded. Following the encoder, the data is fed to the transmit digital filters, which perform
spectral shaping on the data signals. The resultant in-phase (I) and quadrature (Q) signals are
then fed to the BPSK, QPSK, 8-QAM, 16-QAM, 8-ARY, 16-ARY, and 32-ARY modulator.
The carrier is generated by a frequency synthesizer, and the I and Q signals directly modulate
this carrier. For L-Ba nd app licat ions , the direc t l y modu l ated sign al comprises the main output. For
IF applications (50–180 MHz), the L-Band signal is mixed down and filtered to produce the
desired output. The Rx-IF signal at L-Band is processed by a dual IF superheterodyne receiver.
For IF applications (50–180 MHz), the signal is first mixed up to the first IF frequency. The second
conversion is a complex mix, resulting in the signal once more being split into in-phase (I) and a
quadrature (Q) components, producing an output at near-zero frequency. An AGC circuit
maintains the desired signal level constant over a broad range. Following this, the I and Q signals
are sampled by high-speed (flash) A/D converters. All processing beyond this conversion is
purely digital, performing the functions of Nyquist filtering, carrier recovery, and symbol timing
recovery. The resultant demodulated signal is fed, in soft decision form, to the selected FEC
decoder, which can be VersaFEC or VersaFEC-2.
After decoding, the recovered clock and data pass to the de-framer (if D&I or EDMAC framing is
enabled), where the overhead information is removed. Following this, the data passes to the
Plesiochronous/Doppler buffer, which has a programmable size, or may be bypassed. From here,
the receive clock and data signals are routed to the terrestrial interface, and are passed to the
externally connected DTE equipment.
Introduction 1–3 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
1.3 Features
1.3.1 Physical Description
The CDM-425 Advanced Satellite Modem is constructed as a 1RU-high rack-mounting chassis,
which can be free-standing if desired. Handles at the front ease placement into and removal from
a rack.
The CDM-425 Advanced Satellite Modem chassis assembly (CEFD P/N PL-0021674 Standard
AC Chassis or CEFD P/N PL-0021408 Optional DC Chassis) is physically comprised of two main
card assemblies:
• Baseband Framing Card. This first card includes all of the interface circuits, the
framer/de-framer, plesiochronous/Doppler buffer, high-level data link control (HDLC)
framer, Ethernet switch, and the main microcontroller.
• Modem Card. This second card is the modem itself. It performs all signal processing
functions of modulation, demodulation, and primary FEC.
1.3.2 Modem Compatibility
The CDM-425 Advanced Satellite Modem is fully backwards compatible with the Comtech EF
Data CDM-625 and CDM-625A modems in VersaFEC modes. It is also backwards compatible
with the CDM-625A in VersaFEC-2 modes.
1.3.3 Verification
The CDM-425 Advanced Satellite Modem includes many test modes and loopbacks for rapid
verification of the correct functioning of the unit. Of particular note is the IF loopback, which
permits you to perform a quick diagnostic test without having to disturb external cabling. During
the loopback, all of the receive configuration parameters are temporarily changed to match those
of the transmit side, and an internal RF switch connects the modulator output to the demodulator
input. When normal operation is again selected, all of the previous values are restored.
1.3.4 Updating Modem Firmware
Chapter 4. UPDATING FIRMWARE
The CDM-425 Advanced Satellite Modem stores its firmware internally in flash memory, which
simplifies the firmware updating process without having to open the modem. Firmware downloads
are available via the Internet from Comtech EF Data’s Web site, via e-mail, or on CD, and can be
transferred from an external client PC once connectivity has been established with the modem.
Introduction 1–4 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
1.3.5 Standard Data Interfaces
Chapter 3. REAR
The CDM-425 Advanced Satellite Modem includes a universal data interface that eliminates the
need to exchange interface cards for different applications. The interfaces offered, as standard,
include:
• RS-422 (EIA530) DCE (at rates up to 14 Mbps)
• X.21 DTE and DCE (at rates up to 2.048 Mbps)
• V.35 DCE (at rates up to 14 Mbps)
• G.703 E1, balanced and unbalanced
• G.703 T1, balanced
• Quad E1 Drop and Insert (QDI) – up to 4 balanced E1ports
• Four-port Ethernet 10/100 BaseT switch for IP bridging and routing
PANEL CONNECTORS AND PINOUTS
Introduction 1–5 MN-CDM-425
CDM-425 Advanced Satellite Modem
Feature
CEFD P/N
Description
Sect.
IP Packet
Rack
KT/6228-2
Rear Rack-Mount Kit – 4” Bracket
Quad E1 Adapter Y-Cable (for 2 E1 Ports: D-Type-9-pin Male to 2X
AC Power
KT-0000282
AC Primary Power Supply: 100-240 VAC (65W Power Supply)
PS-0000075
AC 65W Power Supply
CA/17725
AC Power Cord, Standard (IEC-60320 Type C13) – USA
CA/90025-5FT
AC Power Jumper Cord, Standard (IEC-60320 Type C13)
KT/11633-1
AC Power Cord Retainer Kit (for any AC Cord)
CA/17850
AC Power Cord – European / French
PP-0000097
AC Power Cord – Japanese
PP-0020556
AC Power Cord – India
CA/PWR83221
AC Power Cord – United Kingdom
WI/86516035-
DC Power
PS-0020607
DC 48V 70W Power Supply
Revision 0
1.3.6 Optional Hardware and Accessories
Table 1-1 identifies the available hardware options and accessories that can be factory-installed
at the time of ordering or user-installed in the field. Refer to the specified manual section for
further information or details. Contact Comtech EF Data Product Support to purchase any of
these products.
Table 1-1. Optional Hardware and Accessorie s
Processor
Installation
Data Interface
KT-0020922 IP Packet Processor kit J.1.1
KT/6228-3 Rear Rack-Mount Kit – 10” Bracket
CA-0000163
CA-0000164
KT-0000122 Quad E1 Balanced/Unbalanced Adapter Kit / Y-Cable, 6”
KT-0020570 Quad E1 Balanced/Unbalanced Adapter Kit / Y-Cable, 3 ft
CA/WR12685-1
Quad E1 Adapter Y-Cable (for 2 E1 Ports: D-Type 9-pin Male to 2X
D-Type 15-pin Female)
RJ-48)
V35 to EIA-530 Adapter Cable: 25-pin D-Type Male to 37-pin DType Female, 8” (RTS/CTS Control)
2.2.1
3.2.2.2.3.1
3.2.2.2.3.2
3.2.2.2.3.3
N/A
3.3.2
AUS
PL-0021408 Modem Chassis – DC
CA-0000455 DC Pigtail Adapter
CA/WR10327-1 DC Power Cord – 48VDC
Introduction 1–6 MN-CDM-425
BUC Power
Supplies
KT-0021207 BUC Power Supply: 24 VDC 90W (50° C) (100-240 VAC Input)
KT-0021128 BUC Power Supply: 48 VDC 150W (50° C) (100-240 VAC Input)
KT-0021130 BUC Power Supply: 24 VDC 90W (50° C) (-48 VDC Input)
KT-0021216 BUC Power Supply: 48 VDC 150W (50° C) (-48 VDC Input)
AC Power Cord – Australia
3.3.3
N/A
CDM-425 Advanced Satellite Modem
50-180 MHz
FAST
950-2250 MHz (L-Band)
BASE UNIT
VersaFEC Codec
BASE UNIT
VersaFEC-2 Codec
BASE UNIT
BPSK, QPSK
BASE UNIT
8-QAM, 8-ARY
FAST
16-QAM, 16-ARY
FAST
32-ARY
FAST
T1/E1 D&I (single port)
FAST
Quad E1 Drop and Insert
FAST
Data rate 18 kbps to 512 kbps
FAST
Data rate 18 kbps to 1 Mbps
FAST
Data rate 18 kbps to 2.5 Mbps
FAST
Data rate 18 kbps to 5.0 Mbps
FAST
Data rate 18 kbps to 10.0 Mbps
FAST
Data rate 18 kbps to 15.0 Mbps
FAST
Data rate 18 kbps to 20.0 Mbps
FAST
Data rate 18 kbps to 25.0 Mbps
FAST
Data rate 18 kbps to 1.1 Mbps
BASE
Data rate 18 kbps to 2.5 Mbps
FAST
Data rate 18 kbps to 5.0 Mbps
FAST
Data rate 18 kbps to 16.0 Mbps
FAST
Revision 0
1.3.7 Fully Accessible System Topology (FAST)
Chapter 5. FAST ACTIVATION PROCEDURE
The CDM-425 Advanced Satellite Modem incorporates a number of optional features. In order to
permit a lower initial cost, you may purchase the unit enabled with only the desired features.
If you wish to upgrade the functionality of a unit at a later date, Comtech EF Data provides Fully
Accessible System Topology (FAST), which permits the purchase and activation of options
through special authorization codes. You may contact Comtech EF Data Product Support to
purchase these unique, register-specific Fast Access Codes, and then load these codes into the
unit using either the front panel keypad or the CDM-425 HTTP (Web Server) Interface.
FAST Accessible Options: Table 1-2 shows the FAST and FAST-accessible hardware options
available for the CDM-425 Advanced Satellite Modem. The base unit is equipped with Viterbi and
Reed-Solomon codecs. It offers BPSK, QPSK, and OQPSK modulation types, and data rates up
to 5.0 Mbps, with all interface types. While it is limited to Closed Network operation, it also
includes EDMAC and automatic uplink power control (AUPC).
Table 1-2. FAST and FAST-accessible Hardware Options
Option Description and Comments
IF band
Forward Error Correction
Modulation
Drop and Insert
DoubleTalk Carrier-in-Carrier
Installation
Method
Introduction 1–7 MN-CDM-425
VersaFEC Constant Coding
and Modulation (CCM)
CDM-425 Advanced Satellite Modem
Symbol rate 37 ksps to 300 ksps
BASE
Symbol rate 37 ksps to 1200 ksps
FAST
Symbol rate 37 ksps to 4100 ksps
FAST
Data rate 18 kbps to 5 Mbps
BASE
Data rate 18 kbps to 10 Mbps
FAST
Data rate 18 kbps to 15 Mbps
FAST
Data rate 18 kbps to 20 Mbps
FAST
Data rate 18 kbps to 25 Mbps
FAST
Symbol rate 37 ksps to 1200 ksps
BASE
Symbol rate 37 ksps to 2000 ksps
FAST
Symbol rate 37 ksps to 4100 ksps
FAST
Symbol rate 37 ksps to 8000 ksps
FAST
Symbol rate 37 ksps to 12500 ksps
FAST
G.703 Clock Extension
G.703 Clock Extension
FAST
Carrier ID
Carrier ID
FAST
Advanced Network Timing
(ANT)
100-240 VAC Nominal, 90-264 VAC Maximum
HARDWARE
43-60 VDC Nominal, 36-60 VDC Maximum
HARDWARE
24V, 100W
HARDWARE
48V, 150W @ 50° C (180W@ 35° C)
HARDWARE
Card
IP Packet Processor daughter card
HARDWARE
Data rate up to 5 Mbps or Symbol rate up to 2000 ksps (ACM)
FAST
Data rate up to 10 Mbps or Symbol rate up to 4100 ksps (ACM)
FAST
Data rate up to 15 Mbps or Symbol rate up to 5000 ksps (ACM)
FAST
Data rate up to 20 Mbps or Symbol rate up to 12500 ksps (ACM)
FAST
Data rate up to 25 Mbps or Symbol rate up to 12500 ksps (ACM)
FAST
Data rate up to 5 Mbps or Symbol rate up to 2000 ksps (ACM)
FAST
Data rate up to 10 Mbps or Symbol rate up to 4100 ksps (ACM)
FAST
Data rate up to 15 Mbps or Symbol rate up to 5000 ksps (ACM)
FAST
Data rate up to 20 Mbps or Symbol rate up to 12500 ksps (ACM)
FAST
Data rate up to 25 Mbps or Symbol rate up to 12500 ksps (ACM)
FAST
Advanced QoS
Advanced QoS
FAST
AES
Encryption
Available as
EN model
Revision 0
Option Description and Comments
VersaFEC Adaptive Coding
and Modulation (ACM)
VersaFEC-2 Constant
Coding and Modulation
(CCM)
VersaFEC-2 Adaptive Coding
and Modulation (ACM)
Main Power Supplies
Installation
Method
IEEE-1588v2 Precision Timing Protocol (PTP) FAST
BUC Power Supplies
Payload
Compression
IP Packet
Processor
Header
Compression
Tx Packet Encryption / Rx Packet Decryption
Introduction 1–8 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
1.3.8 Supporting Hardware and Software
Redundancy Support: Comtech EF Data provides redundant operations support to the
CDM-425 Advanced Satellite Modem as follows:
• For 1:1 redundancy applications, via its low-cost external CRS-170A L-Band and CRS-
180 70/140 MHz IF 1:1 Redundancy Switches.
• For M:N redundancy (hub) applications, via its external CRS-300 1:10 Redundancy
Switch or the CRS-500 M:N Redundancy System.
Transceiver Support: The CDM-425 Advanced Satellite Modem is a companion product for
Comtech EF Data’s CSAT-5060 and KST-2000A/B RF Transceivers. The modem incorporates a
Frequency Shift-keying (FSK) serial link that can be activated on the Rx-IF port for the purpose of
communicating with a transceiver, if connected. In this manner, you may configure, monitor and
control the transceiver using either the front panel display and keypad or any of its remote control
interfaces. The EDMAC channel may also be used to convey M&C data to a transceiver at the
distant end of a satellite link, if it is connected to a CDM-425.
BUC Support: The CDM-425 Advanced Satellite Modem incorporates an FSK serial link that can
be activated on the Tx-IF port for the purpose of communicating with an FSK-capable “smart”
BUC. This link is designed to be compatible with the Global very small aperture terminal (VSAT)
Forum/ND SatCom specification. In this manner, you may configure, monitor and control the
block up converter (BUC) using either the front panel display and keypad or any of its remote
control interfaces.
Additionally, Comtech EF Data provides for an "Advanced FSK" for use with its LPOD BUCs, reusing the existing FSK channel to pass additional "proprietary" commands to expand front panel
user control. The EDMAC channel can be used to convey M&C interface to a BUC at the distant
end of a satellite link, if it is connected to a CDM-425 Advanced Satellite Modem.
Introduction 1–9 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
1.3.9 Physical Features
1.3.9.1 Dimensional Envelope
All dimensions are in inches. Dimensions shown in parentheses are in metric units (mm).
Figure 1-2. Dimensional Envelope
Introduction 1–10 MN-CDM-425
CDM-425 Advanced Satellite Modem
4
4
1
2
3
Revision 0
1.3.9.2 Front Panel Features
• Chapter 2. INSTALLATION
• Chapter 6. FRONT
Table 1-3. Front Panel Descriptions and Functions
Feature Description Function Sect.
PANEL OPERATION
Figure 1-3. Front Panel Features
Light Emitting
1
Diode (LED)
Indicators
2 Keypad
Vacuum
Fluorescent
3
Display (VFD)
4 Rack Handles These handles ease placement into and removal from a rack. 2.2
The LEDs indicate, in a summary fashion, the status of the modem. 6.1.1
The keypad comprises six individual keyswitches. The keys have a
positive ‘click’ action that provides tactile feedback. Enter data via the
keypad. Data, prompts, and messages are displayed on the VFD.
The VFD is an active display showing two lines of 40 characters each.
It produces a blue light with adjustable brightness. Nested menus
display all available options and prompt you to carry out a req’d action.
6.1.2
6.1.3
Introduction 1–11 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
1.3.9.3 Rear Panel Features
Chapter 3. REAR
PANEL CONNECTORS AND PINOUTS
Figure 1-4. Rear Panel View – AC Connection
Figure 1-5. Rear Panel View – DC Connection
Figure 1-4 and Figure 1-5 shows the rear panel of the modem. External cables are attached to
connectors on the rear panel of the CDM-425 Advanced Satellite Modem.
Introduction 1–12 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
Table 1-4. Rear Panel Connectors and Functions
Connection
Group
Name Connector Type Function
(Chapter Sect.)
IF
(Sect. 3.2.1)
Terrestrial Data
(Sect. 3.2.2)
Rx
IF Input
Type ’N’ female (L-Band)
BNC female (70/140MHz band)
BNC female (70/140MHz band)
Tx
IF Output
Type ’N’ female (L-Band)
Data Interface 25-pin Type ‘D’ female Serial synchronous data input/output
G.703
Data
Balanced
G.703
Auxiliary
G.703
Unbalanced
Out
Unbalanced
In
9-pin Type ‘D’ female
9-pin Type ‘D’ female Quad E1 Ports 3 & 4
BNC female Receive G.703 (IDO)
BNC female Transmit G.703 (DDI)
IDI BNC female
DDO BNC female
G.703, D&I or D&I++; Quad E1 Ports 1
& 2
Insert Data In / Sub-rate Auxiliary Tx
G.703 In
Drop Data Output / Sub-rate Auxiliary
Rx G.703 Out
10/100 Ethernet (4X) RJ-45 female 10/100 BaseT management and data
Remote Control 9-pin Type ‘D’ male Serial Remote Interface (RS232/485)
Alarms 15-pin Type ‘D’ male Form C Alarms (relay closures)
Utility
(Sect. 3.2.3)
Pre-Mapped Symbol
Interface (PMSI)
1:1 Control 9-pin Type ‘D’ female Connection to External 1:1 Controller
External Reference BNC female Input/output
Ground #10-32 stud – See Sect. 3.3.1 Common Chassis Ground
Ground / Power
(Sect 3.3)
AC Power (Standard) See Sect. 3.3.2 Chassis power
DC Power (Optional) See Sect. 3.3.3 Chassis power
The European EMC Directive 2004/108/EEC (EN 55022, EN 50024) requires using properly shielded
cables for DATA I/O. These cables must be double-shielded from end-to-end, ensuring a
continuous ground shield.
9-pin Type ‘D’ female Pre-Mapped Symbol Interface (CnC)
Introduction 1–13 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
1.4 Summary of Specifications
1.4.1 Modulator
Modulation BPSK, QPSK, 8-QAM, , 8-ARY, 16-QAM, 16-AR Y, and 32-ARY
Symbol rate range 18 ksps to 12.5 Msps
Data rate range 18 kbps - 25 Mbps. See Section 1.4.7
Operating frequency 50 - 180 MHz (BNC connector) and 950 - 2250 MHz (Type ‘N’ connector), 100 Hz resolution
Stability ±0.06 ppm (±6 x 10
-8
) 0° to 50°C (32° to 122°F), when using internal reference
Operating modes
• E1/T1 Drop and Insert
• Proprietary EDMAC framed mode:
• 5% overhead – EDMAC (data rates < 2.048 Mbps all modes)
• 1.6% overhead - EDMAC-2 (rates >2.048 Mbps)
• EDMAC-3 – for SNMP Proxy – same as EDMAC
• VersaFEC
®
Codec (short-block, low latency and ultra-low-latency low density parity check
(LDPC))
®
• VersaFEC-2
• VersaFEC
Codec (optional plug-in module, long-block, short-block)
®
Adaptive Coding and Modulation – IP interface only – maximum symbol rate = 4.1
Msps
®
• VersaFEC-2
Adaptive Coding and Modulation – IP interface only – maximum symbol rate =
12.5 Msps
• Automatic Uplink Power Control (AUPC) mode
• Enhanced Drop & Insert (D&I+ +)
• Quad E1 Drop & Insert (QDI) - c on catenates time slots from up to four E 1 G.703 s tr eams , Framed
QDI
• DoubleTalk® Carrier-in-Carrier® mode
• Carrier-in-Carrier Automatic P owe r C ontr ol (C nC -APC)
Introduction 1–14 MN-CDM-425
CDM-425 Advanced Satellite Modem
Rate 0.660, 0.684, 0.708, 0.733, 0.757, 0.782, 0.801, 0.831 32-ARY
Revision 0
FEC VersaFEC Codec:
Rate 0.488 BPSK (also 0.493 BPSK Ultra-Low-Latency)
Rate 0.533, 0.631, 0.706, 0.803 QPSK (0.493, 0.654, 0.734 Ultra-Low-Latency)
Rate 0.642, 0.711, 0.780 8-QAM (also 0.576 8-QAM Extended CCM)
Rate 0.731, 0.780, 0.829, 0.853 16-QAM (also 0.644 16-QAM Extended CCM)
VersaFEC-2 Long-Block Codec:
Rate 0.489 BPSK
Rate 0.489, 0.537, 0.586, 0.611, 0.635, 0.660, 0.684, 0.733 QPSK
Rate 0.521, 0.537, 0.562, 0.586, 0.611, 0.635, 0.660, 0.684, 0.708, 0.733 8-ARY
Rate 0.586, 0.611, 0.635, 0.660, 0.684, 0.708, 0.733, 0.757, 0.782 16-ARY
Rate 0.660, 0.684, 0.708, 0.733, 0.757, 0.782, 0.801, 0.831, 0.855, 0.879 32-ARY
VersaFEC-2 Short-Block Codec:
Rate 0.489 BPSK
Rate 0.489, 0.537, 0.586, 0.611, 0.635, 0.660, 0.684, 0.733 QPSK
Rate 0.521, 0.537, 0.562, 0.586, 0.611, 0.635, 0.660, 0.684, 0.708, 0.733 8-ARY
Rate 0.586, 0.611, 0.635, 0.660, 0.684, 0.708, 0.733, 0.757, 0.782 16-ARY
Transmit filtering Root-Raised Cosine, alpha = 0.05, 0.10, 0.15, 0.20, 0.25, and 0.35 – front panel/software selectable
See graphs of output spectrum provided at the end of this section
Scrambling All Ver sa F EC®, VersaFEC-2® modes use IESS-315/V.35
External Reference
As an input: 1, 2, 5 or 10MHz -6dBm to +10dBm (nominal 50/75 Ω, BNC female connector)
As an output: 10MHz, 2.7 volts p eak -to-peak ±0.4 volts, low impedance ou t put
(The Ext. reference ph ase l ock s Tx and Rx synth esi ze rs, a nd al l base band c l ock generation)
Harmonics/spurious Better than -60 dBC/4 kHz (typically <-65 dBC/4kHz)
950-2250 MHz band: measured F
±500 MHz
0
50-180 MHz band: measured from 1 to 500 MHz
Transmit on/off ratio -60 dBC minimum
Output phase noise
< 0.480rms double sided, 100 Hz to 1MHz (minimum of 16 dB better overall than the INTELSAT
IESS-308/309 requirement)
dB/Hz Frequency Offset
-63.0 100 Hz
-73.0 1 kHz
-83.0 10 kHz
-93.0 100 kHz
Fundamental AC line spurious is -42 dBc or lower
The sum of all other single sideband spurious, from 0 to 0.75 x symbol rate, is -48 dBc or lower
Introduction 1–15 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
Output power 950-2250 MHz band: 0 to -40 dBm, 0.1 dB steps - manual mode. Also see AUPC section.
50-180 MHz band: 0 to -25 dBm, 0.1 dB steps - manual mode. Also see AUPC section.
Power accuracy 950-2250 MHz band:
±0.5 dB over frequency, data rate, modulation type and temperature range 15°to 35°C
±0.8 dB over frequency, data rate, modulation type and temperature range 0° to 50°C
50-180 MHz band:
±0.5 dB over frequency, data rate, modulation type and temperature range 15° to 35°C
±0.7 dB over frequency, data rate, modulation type and temperature range 0° to 50°C
Output impedance
950-1950 MHz band: 50Ω, 18 dB minimum return loss (21 dB typical)
1950-2250 MHz band: 17dB minimum
50-180 MHz band: 50Ω, or 75Ω 16 dB minimum return loss (18 dB typical)
Output connector 950-2250 MHz band: Type N female
50-180 MHz band: BNC female
Clocking options Internal, ±0.06 ppm (SCT)
External, locking over a ±100 ppm range (TT)
Loop timing (Rx satellite clock) - supports asymmetric operation - Rx and Tx data rates need not be
identical
External Clock
G.703 Clock Extension mode – internal ST clock can be slaved to an external T1 or E1 G.703
signal, and a G.703 timing signal re-constituted at the distant end of the link, regardless of the
actual link data rate
Externa l TX C arr ier Of f
By TTL 'low' signal or external contact closure - hardware function automatically over-rides
processor
BUC Reference (10
MHz):
Phase Noise
On center conductor of L-Band output connector; 10.0 MHz ± 0.06 ppm (internal reference
selected)
0.0 dBm, ± 3 dB; programmable ON/OFF
Source: either Internal Modem Reference or External Reference (10 MHz)
dB/Hz Frequency Offset
-105 10 Hz
-125 100 Hz
-138 1 kHz
-148 10 kHz
-150 100 kHz
Introduction 1–16 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
BUC Supply Voltage
• Standard unit has no BUC supply.
• Optional BUC Supply:
o 24VDC, 4.17 Amps maximum, 100W
o 48VDC, 3.125 Amps maximum, 150W @ 50° C (180 watts @ 30° C)
o Supplied through Tx IF center conductor and selectable ON/OFF via M&C control.
BUC Current Monitor Min/Max programmable current alarm thresholds.
Tx Carrier ON Delay Selectable feature power on to allow internal ovenized reference to stabilize before turning on Tx
carrier. Intelligent algorithm minimizes delay time based on internal temperature at power-up.
BUC Monitoring Power level, temperature, power class, phased locked loop (PLL) lock.
Uses ND Satcom/Global VSAT Forum specification for FSK control and monitoring.
Figure 1-6. Transmit Power Spectral Density
Tx Alpha 0.05 to 0.20
Introduction 1–17 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
Figure 1-7. Transmit Power Spectral Density
TX Alpha 0.25 and 0.35
Introduction 1–18 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
1.4.2 Demodulator
Note: Data rate range, operating modes, descrambling, input impedance/return loss etc, as per
Sect. 1.4.1 Modulator.
Input power range, desired
carrier
950-2250 MHz band:
-130 + 10
(symbol rate) to -80 + 10
log
(symbol rate) dBm
log
50-180 MHz band:
Maximum Composite
Operating Level
-105 + 10
950-2250 MHz band:
102 – 10
(symbol rate) to -70 + 10
log
(symbol rate, desired carrier) dBC, +10 dBm max, with the additional requirement that
log
(symbol rate) dBm
log
within ±10 MHz of the desired carrier, composite power is ≤ +30 dBC.
50-180 MHz band:
94 – 10
(symbol rate, desired carrier) dBC, +10 dBm max, with the additional requirement that
log
within ±10 MHz of the desired carrier, composite power is ≤ +30 dBc
Absolute Maximum, No
Damage
+20 dBm
FEC VersaFEC: 6 bit soft decision, proprietary
VersaFEC-2: 8 bit soft decision, proprietary
Acquisition range Programmable in 1kHz increments, and subject to the following:
Below 64 ksymbols/sec: ±1 to ±(Rs/2) kHz, where Rs = symbol rate in ksymbols/sec
Between 64 and 389 ksymbols/sec: ±1 up to a maximum of ±32kHz
Above 389 ksymbols/sec: ±1 to ±(0.1Rs) kHz, up to a maximum of ±300 kHz
Acquisition time Highly dependent on data rate, FEC rate, and demodulator acquisition range.
Examples: 120 ms average at 64 kbps, R1/2 QPSK, ±10 kHz acquisition sweep range, 6dB
Eb/No
2 s average at 18 kbps, R1/2 QPSK, ±10 kHz, 6dB Eb/No
Clock tracking range ±100 ppm min
Clocking modes Full range of clocking options supported – see plesiochronous/Doppler buffer section
LNB 10 MHz Reference
On center conductor of L-Band input connector, selectable ON/OFF. Level: -3dBm ± 3 dB.
Source: either Internal modem reference or External reference
Performance: For phase noise, refer to L-Band modulator 10 MHz. Frequency stability same as
the modulator 10 MHz reference.
LNB Voltage On center conductor of L-Band input connector, selectable ON/OFF, 13, 18VDC at 500 mA
maximum.
Introduction 1–19 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
LNB Current Alarm Programmable Min/Max current alarms.
Plesiochronous/
Doppler Buffer
Selectable size of 64 to 262,144 bits, in 16-bit steps (With added limitations for G.704 frame
boundaries).
Size selection is displayed in bytes and milliseconds.
Supports asymmetric operation - when buffer is clocked from Tx clock, Rx and Tx rates do not
need to be identical.
Monitor Functions Eb/No estimate:
2 to 10 dB with ±0.3 dB accuracy
0 to 16 dB with ±0.5 dB accuracy
Corrected Bit Error Rate, 1E-3 to 1E-10
Frequency offset, ±32 kHz range, (or 200 kHz range, depending on band and symbol rate) 100 Hz
resolution
Buffer fill state, in percent
Receive signal level: 950-2250 MHz band accuracy: ±3 dB
50-180 MHz band accuracy: ±2 dB
Introduction 1–20 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
VersaFEC CODEC BER
BPSK
(With two adjacent
carriers, each 7 dB
higher than the desired
carrier)
VersaFEC CODEC BER
QPSK
(With two adjacent
carriers, each 7 dB
higher than the desired
carrier)
VersaFEC CODEC BER
8-QAM
(With two adjacent
carriers, each 7 dB
higher than the desired
carrier)
VersaFEC CODEC BER
16-QAM
(With two adjacent
carriers, each 7 dB
higher than the desired
carrier)
BER=10
BER=10
-5
-8
Rate 0.488
2.4 dB (2.1 dB)
2.7 dB (2.4 dB)
For BER=10-X Rate – Guaranteed Eb/No (typical value in parentheses)
BER=10
BER=10
BER=10
BER=10
BER=10
BER=10
Rate 0.533 QPSK
-5
2.3 dB (2.0 dB)
-8
2.5 dB (2.2 dB)
Rate 0.642 8-QAM
-5
4.6 dB (4.3 dB)
-8
4.9 dB (4.6 dB)
Rate 0.731 16-
-5
6.6 dB (6.3 dB)
-8
6.8 dB (6.5 dB)
QAM
Rate 0.631 QPSK
2.8 dB (2.5 dB)
3.0 dB (2.7 dB)
Rate 0.711 8-QAM
5.2 dB (4.9 dB)
5.5 dB (5.2 dB)
Rate 0.780 16-
QAM
7.1 dB (6.8 dB)
7.4 dB (7.1 dB)
Rate 0.706 QPSK
3.3 dB (3.0 dB)
3.7 dB (3.4 dB)
Rate 0.780 8-QAM
5.6 dB (5.3 dB)
6.0 dB (5.7 dB)
Rate 0.829 16-
QAM
7.7 dB (7.4 dB)
8.0 dB (7.7 dB)
Rate 0.803 QPSK
3.8 dB (3.5 dB)
4.1 dB (3.8 dB)
Rate 0.853 16-
8.1 dB (7.8 dB)
8.4 dB (8.1 dB)
QAM
VersaFEC CODEC –
Extended CCM (ECCM)
BER
(With two adjacent
carriers, each 7 dB
BER=10
BER=10
Rate 0.576 8-QAM
-5
4.5 dB (4.2 dB)
-8
4.9 dB (4.6 dB)
Rate 0.644 16-
QAM
6.4 dB (6.1 dB)
6.9 dB (6.6 dB)
higher than the desired
carrier)
VersaFEC-2 Long Block
CODEC BER
BPSK
BER=10
BER=10
Rate 0.489 BPSK
-4
-8
1.8 dB (1.5 dB)
2.1 dB (1.8 dB)
(With two adjacent
carriers, each 7 dB
higher than the desired
carrier)
Introduction 1–21 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
VersaFEC-2 Long Block
CODEC BER
QPSK
(With two adjacent
carriers, each 7 dB
higher than the desired
carrier)
VersaFEC-2 Long Block
CODEC BER
8-ARY
(With two adjacent
carriers, each 7 dB
higher than the desired
carrier)
BER=10
BER=10
BER=10
BER=10
BER=10
BER=10
BER=10
BER=10
BER=10
BER=10
Rate 0.489 QPSK
-4
-8
1.7 dB (1.4 dB)
1.9 dB (1.6 dB)
Rate 0.635 QPSK
-4
2.3 dB (2.0 dB)
-8
2.5 dB (2.2 dB)
Rate 0.521 8-ARY
-4
3.2 dB (2.9 dB)
-8
3.5 dB (3.2 dB)
Rate 0.611 8-ARY
-4
3.4 dB (3.1 dB)
-8
3.7 dB (3.4 dB)
Rate 0.708 8-ARY
-4
-8
4.0 dB (3.7 dB)
4.2 dB (3.9 dB)
Rate 0.537 QPSK
1.8 dB (1.5 dB)
2.0 dB (1.7 dB)
Rate 0.660 QPSK
2.4 dB (2.1 dB)
2.6 dB (2.3 dB)
Rate 0.537 8-ARY
3.2 dB (2.9 dB)
3.6 dB (3.3 dB)
Rate 0.635 8-ARY
3.5 dB (3.2 dB)
3.7 dB (3.4 dB)
Rate 0.733 8-ARY
4.3 dB (4.0 dB)
4.4 dB (4.1 dB)
Rate 0.586 QPSK
2.0 dB (1.7 dB)
2.2 dB (1.9 dB)
Rate 0.684 QPSK
2.4 dB (2.1 dB)
2.6 dB (2.3 dB)
Rate 0.562 8-ARY
3.3 dB (3.0 dB)
3.6 dB (3.6 dB)
Rate 0.660 8-ARY
3.7 dB (3.4 dB)
3.8 dB (3.5 dB)
Rate 0.611 QPSK
2.1 dB (1.8 dB)
2.2 dB (1.9 dB)
Rate 0.733 QPSK
2.8 dB (2.5 dB)
3.0 dB (2.7 dB)
Rate 0.586 8-ARY
3.3 dB (3.0 dB)
3.6 dB (3.6 dB)
Rate 0.684 8-ARY
3.9 dB (3.6 dB)
4.1 dB (3.8 dB)
VersaFEC-2 Long Block
CODEC BER
16-ARY
(With two adjacent
carriers, each 7 dB
higher than the desired
carrier)
VersaFEC-2 Long Block
CODEC BER
32-ARY
BER=10
BER=10
BER=10
BER=10
BER=10
BER=10
BER=10
BER=10
Rate 0.586 16-ARY
-4
-8
4.4 dB (4.1 dB)
4.7 dB (4.4 dB)
Rate 0.684 16-ARY
-4
5.3 dB (5.0 dB)
-8
5.5 dB (5.2 dB)
Rate 0.782 16-ARY
-4
6.5 dB (6.2 dB)
-8
6.7 dB (6.4 dB)
Rate 0.660 32-ARY
-4
6.8 dB (6.5 dB)
-8
7.1 dB (6.8 dB)
Rate 0.611 16-
ARY
4.7 dB (4.4 dB)
Rate 0.635 16-ARY
4.9 dB (4.6 dB)
5.2 dB (4.9 dB)
5.0 dB (4.7 dB)
Rate 0.708 16-
ARY
5.6 dB (5.3 dB)
Rate 0.733 16-ARY
5.9 dB (5.6 dB)
6.1 dB (5.8 dB)
5.8 dB (5.5 dB)
Rate 0.684 32-
ARY
7.2 dB (6.9 dB)
Rate 0.708 32-ARY
7.4 dB (7.1 dB)
7.7 dB (7.4 dB)
7.5 dB (7.2 dB)
Rate 0.660 16-
ARY
5.1 dB (4.8 dB)
5.3 dB (5.0 dB)
Rate 0.757 16-
ARY
6.2 dB (5.9 dB)
6.4 dB (6.1 dB)
Rate 0.733 32-
ARY
7.7 dB (7.4 dB)
8.0 dB (7.7 dB)
Introduction 1–22 MN-CDM-425
CDM-425 Advanced Satellite Modem
(With two adjacent
Revision 0
carriers, each 7 dB
higher than the desired
carrier)
VersaFEC-2 Short Block
CODEC BER
BPSK
(With two adjacent
carriers, each 7 dB
higher than the desired
carrier)
VersaFEC-2 Short Block
CODEC BER
QPSK
(With two adjacent
carriers, each 7 dB
higher than the desired
carrier)
BER=10
BER=10
BER=10
BER=10
Rate 0.757 32-ARY
-4
-8
8.0 dB (7.7 dB)
8.2 dB (7.9 dB)
Rate 0.855 32-ARY
-4
9.8 dB (9.5 dB)
-8
10.0 dB (9.7 dB)
Rate 0.782 32-
ARY
8.4 dB (8.1 dB)
8.6 dB (8.3 dB)
Rate 0.879 32-
ARY
10.4 dB (10.1 dB)
Rate 0.801 32-ARY
8.8 dB (8.5 dB)
9.0 dB (8.7 dB)
Rate 0.831 32-
9.1 dB (8.8 dB)
9.3 dB (9.0 dB)
10.6 dB (10.3 dB)
For BER=10-X Rate – Guaranteed Eb/No (typical value in parentheses)
BER=10
BER=10
BER=10
BER=10
BER=10
BER=10
Rate 0.489 BPSK
-4
2.6 dB (2.3 dB)
-8
3.2 dB (2.9 dB)
Rate 0.489 QPSK
-4
-8
2.3 dB (1.4 dB)
2.7 dB (1.6 dB)
Rate 0.635 QPSK
-4
-8
2.8 dB (2.5 dB)
3.2 dB (2.9 dB)
Rate 0.537 QPSK
2.4 dB (2.1 dB)
2.0 dB (1.7 dB)
Rate 0.660 QPSK
2.9 dB (2.6 dB)
3.3 dB (3.0 dB)
Rate 0.586 QPSK
2.5 dB (2.2 dB)
3.0 dB (2.7 dB)
Rate 0.684 QPSK
3.0 dB (2.7 dB)
3.4 dB (3.1 dB)
Rate 0.611 QPSK
2.6 dB (2.3 dB)
3.1 dB (2.8 dB)
Rate 0.733 QPSK
3.4 dB (3.1 dB)
3.8 dB (3.5 dB)
ARY
VersaFEC-2 Short Block
CODEC BER
8-ARY
BER=10
BER=10
Rate 0.521 8-ARY
-4
3.5 dB (3.2 dB)
-8
4.0 dB (3.7 dB)
Rate 0.537 8-ARY
3.5 dB (3.2 dB)
4.1 dB (3.8 dB)
Rate 0.562 8-ARY
3.6 dB (3.6 dB)
4.2 dB (3.9 dB)
Rate 0.586 8-ARY
3.7 dB (3.4 dB)
4.2 dB (3.9 dB)
(With two adjacent
carriers, each 7 dB
higher than the desired
carrier)
VersaFEC-2 Short Block
CODEC BER
16-ARY
Introduction 1–23 MN-CDM-425
BER=10
BER=10
BER=10
BER=10
BER=10
BER=10
Rate 0.611 8-ARY
-4
3.9 dB (3.6 dB)
-8
4.3 dB (4.0 dB)
Rate 0.708 8-ARY
-4
4.5 dB (4.2 dB)
-8
4.8 dB (4.5 dB)
Rate 0.586 16-ARY
-4
4.8 dB (4.5 dB)
-8
5.3 dB (5.0 dB)
Rate 0.635 8-ARY
3.9 dB (3.6 dB)
4.4 dB (4.1 dB)
Rate 0.733 8-ARY
4.8 dB (4.5 dB)
5.2 dB (4.9 dB)
Rate 0.611 16-
ARY
5.0 dB (4.7 dB)
5.4 dB (5.1 dB)
Rate 0.660 8-ARY
4.1 dB (3.8 dB)
4.5 dB (4.2 dB)
Rate 0.635 16-ARY
5.3 dB (5.0 dB)
5.6 dB (5.3 dB)
Rate 0.684 8-ARY
4.4 dB (4.1 dB)
4.7 dB (4.4 dB)
Rate 0.660 16-
ARY
5.5 dB (5.2 dB)
5.8 dB (5.5 dB)
CDM-425 Advanced Satellite Modem
(With two adjacent
Revision 0
carriers, each 7 dB
higher than the desired
carrier)
VersaFEC-2 Short Block
CODEC BER
32-ARY
(With two adjacent
carriers, each 7 dB
higher than the desired
carrier)
Ultra-Low-Latency (ULL)
CODEC BER
(With two adjacent
carriers, each 7 dB
higher than the desired
carrier)
BER=10
BER=10
BER=10
BER=10
BER=10
BER=10
BER=10
BER=10
BER=10
BER=10
Rate 0.684 16-ARY
-4
5.7 dB (5.4 dB)
-8
6.2 dB (5.9 dB)
Rate 0.782 16-ARY
-4
7.0 dB (6.7 dB)
-8
7.5 dB (7.2 dB)
Rate 0.660 32-ARY
-4
7.3 dB (7.0 dB)
-8
7.9 dB (7.6 dB)
Rate 0.757 32-ARY
-4
8.4 dB (8.1 dB)
-8
8.9 dB (8.6 dB)
Rate 0.493 BPSK
-5
-8
3.1 dB (2.8 dB)
3.7 dB (3.4 dB)
Rate 0.708 16-
ARY
6.1 dB (5.8 dB)
6.5 dB (6.2 dB)
Rate 0.684 32-
ARY
7.5 dB (7.2 dB)
8.1 dB (7.8 dB)
Rate 0.782 32-
ARY
8.7 dB (8.4 dB)
9.2 dB (8.9 dB)
Rate 0.493 QPSK
3.1 dB (2.8 dB)
3.7 dB (3.4 dB)
Rate 0.733 16-ARY
6.2 dB (5.9 dB)
6.6 dB (6.3 dB)
Rate 0.708 32-ARY
7.7 dB (7.4 dB)
8.2 dB (7.9 dB)
Rate 0.801 32-ARY
9.1 dB (8.8 dB)
9.5 dB (9.2 dB)
Rate 0.654 QPSK
3.6 dB (3.3 dB)
4.2 dB (3.9 dB)
Rate 0.757 16-
ARY
6.7 dB (6.4 dB)
7.1 dB (6.8 dB)
Rate 0.733 32-
ARY
8.2 dB (7.9 dB)
8.7 dB (8.4 dB)
Rate 0.831 32-
ARY
9.5 dB (9.2 dB)
9.9 dB (9.6 dB)
Rate 0.734 QPSK
4.1 dB (3.8 dB)
4.7 dB (4.4 dB)
Introduction 1–24 MN-CDM-425
CDM-425 Advanced Satellite Modem
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10 100
1000 10000 100000
Symbol Rate in ksps
Carrier Level in dBm
Maximum
Minimum
-80
-70
-60
-50
-40
-30
-20
-10
0
10
10
100 1000 10000 100000
Symbol Rate in ksps
Carrier Level in dBm
Maximum
Minimum
Revision 0
Figure 1-8. Rx Carrier Level vs. Symbol Rate – L-Band (950-2250 MHz)
Figure 1-9. Rx Carrier Level vs. Symbol Rate – IF Band (50-180 MHz)
Introduction 1–25 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
1.4.3 Data Interfaces
Primary Data RS-422/EIA-530 DCE (Rates up to 14 M bps)
(also supports X.21 DCE & DTE u p to 2 .048 Mbp s )
V.35 DCE (Rates up to 14 Mbps)
G.703 (Tx In, Drop Out,
Insert In, Rx Out)
Auxiliary G.703
(used for Quad D &I
modes)
External Reference In/Out As an input:
Modem Alarms Relay outputs (Tx, Rx & unit faults)
1.544 Mbps T1 (Balanced 100 Ω)
2.048 Mbps E1 (unbalanced 75 Ω or balanced 120 Ω)
Note: All Drop and Insert modes are a FAST option.
Two additional 2.048 Mbps E1 ports (balanced 120 Ω)
Note: All Drop and Insert modes are a FAST option.
1, 2, 5 or 10MHz -6dB m to +10dBm (nominal 50/75 Ω)
As an output:
10MHz, 2.7 volts peak-to-peak +/ - 0.4 volts, low impedance output
Demodulator I & Q test outputs (constel lati on)
Demodulator Rx Signal Lev el ou tp ut (0 to 10 volts)
External carrier off inp ut
25-pin D-sub (female)
9-pin D-sub (female)
or BNC (female)
9-pin D-sub (female)
BNC (female)
15-pin D-sub (male)
Remote Control RS-232 or RS-485 modem control and monitoring 9-pin D-sub (male)
PMSI Interface Pre-mapped Symbol interfac e
(used by DoubleTalk Carrier-in-Carrier function)
1:1 Control Control interface for CR S17 0A /C RS180 1: 1 Redu ndancy unit 9-pin D-sub (male)
Ethernet 4 ports o f 10/ 100 BaseT auto-sensing ful l /half duplex Ethernet RJ-45
9-pin D-sub (female)
1.4.4 Automatic Uplink Power Control (AUPC)
Operating Mode Requires Closed Network Framed mode (EDMAC, D&I++, or Enhanced D&I) for transport of
Eb/No information from remote modem (EDMAC can be enabled or disabled)
Target Eb/No range 0 to 14.9 dB at remote demod (default is 4.0 dB)
Max AUPC range 0 to 9 dB (default is 3 dB)
Monitor functions Remote demod Eb/No
Tx power level increase
(front panel or via remote control interface)
Introduction 1–26 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
1.4.5 DoubleTalk® Carrier- in-Carrier® (CnC)
Operating Mode
Power Spectral Density Ratio
and CnC Ratio
Maximum Symbol Rate Ratio 3:1 (TX:RX or RX:TX)
Inbound/Outbound frequency
uncertainty
Delay range 0-330 ms
Requires the two links to share a common carrier frequency (Outbound and Inbound
symbol rates do not have to be equal)
BSPK/QPSK/8-QAM: –7 dB to +11 dB (ratio of power spectral density, outbound interferer
to desired inbound)
16-QAM: –7 dB to +7 dB (ratio of power spectral density, outbound interferer to desired
inbound)
Note: With asymmetric carriers, the absolute power ratio (or CnC ratio) would be different,
depending on the ratio of the symbol rates.
Example:
Outbound interferer = 1 Msymbols/sec
Desired Inbound = 500 ksymbols/sec
Ratio of power spectral density = +7 dB
Absolute power ratio (CnC Ratio) = +7dB + (10 log Outbound/desired symbol rate) = +10
dB
Within the normal acquisition range of the demod, as follows:
Below 64 ksymbols/sec: ±1 to ±(Rs/2) kHz, where Rs = symbol rate in ksymbols/sec
Between 64 and 389 ksymbols/sec: ±1up to a maximum of ±32kHz
Above 389 ksymbols/sec: ±1 to ±(0.1Rs) kHz, up to a maximum of ±200 kHz
Eb/No Degradation
(equal Inbound/Outbound
power spectral density)
Monitor Functions Delay, in milliseconds
CnC Monitor Accuracy ±0.2 dB for symmetric symbol rate
BPSK = 0.3dB QPSK = 0.3dB OQPSK = 0.3dB
8PSK = 0.5dB 8-QAM = 0.4dB 16-QAM = 0.6dB
For +10 dB power spectral density ratio (outbound interferer 10 dB higher than desired
inbound) add an additional 0.3 dB
Frequency offset (between outbound interferer and desired inbound). 100 Hz resolution
CnC Power Ratio, in 0.1 dB (ratio of absolute power, outbound interferer to desired
inbound)
Power Spectral Density Ratio, 0.1 dB resolution
Introduction 1–27 MN-CDM-425
CDM-425 Advanced Satellite Modem
VersaFEC BPSK Rate 0.488
18.0
5700.0
VersaFEC QPSK Rate 0.533
20.0
10000.0
VersaFEC QPSK Rate 0.631
23.0
10000.0
VersaFEC QPSK Rate 0.706
26.0
10000.0
VersaFEC QPSK Rate 0.803
28.0
12000.0
VersaFEC 8-QAM Rate 0.576 (ECCM)
32.0
11000.0
VersaFEC 8-QAM Rate 0.642
35.0
12000.0
VersaFEC 8-QAM Rate 0.711
39.0
12000.0
VersaFEC 8-QAM Rate 0.780
43.0
12000.0
VersaFEC 16-QAM Rate 0.644 (ECCM)
47.0
11000.0
VersaFEC 16-QAM Rate 0.731
53.0
12000.0
VersaFEC 16-QAM Rate 0.780
57.0
14000.0
VersaFEC 16-QAM Rate 0.829
60.0
14000.0
VersaFEC 16-QAM Rate 0.853
62.0
16000.0
ULL BPSK Rate 0.493
18.0
5700.0
ULL QPSK Rate 0.493
18.0
6000.0
ULL QPSK Rate 0.654
24.0
9000.0
ULL QPSK Rate 0.734
27.0
9000.0
Revision 0
1.4.6 Data Rate Ranges
VersaFEC (Any Mode) Lower Limit (kbps) Upper Limit (kbps)
VersaFEC Adaptive Coding and Modulation (ACM): See Sect. 1.4.7.1 Specifications
VersaFEC-2 Adaptive Coding and Modulation (ACM): See Sect. 1.4.7.2 Specifications
Introduction 1–28 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
1.4.7 VersaFEC Adaptive Coding and Modulation (ACM)
1.4.7.1 VersaFEC ACM
System type
Symbol Rate Range 37 ksps to 4100 ksps
Interface 10/100 Base T Ethernet, with auto-negotiated Congestion Control
Remote SNR reporting
Max span of data rate 7:1 over range of adaptation
Switch point
(decreasing SNR)
Switch point hysteresis 0.3 dB
Max fading rate Approximately 1 dB/second (higher if Target Eb/No margin > 1 dB)
Max ModCod update rate 1 update every 2 seconds
Configurable parameters
Adaptive Coding and Modulation, using BPSK, QPSK, 8-QAM , 16-QAM and
VersaFEC short-block LDPC coding – a total of 12 ModCods
Automatically reported from remote modem – built in function at the physical
layer – requires no additional overhead
Corresponds to SNR (Eb/No) that gives BER = 5 x 10-8
Minimum and Maximum ModCod (ModCods 00-11)
Remote Demod Unlock Action: Maintain current ModCod
Go to minimum ModCod
Target Eb/No margin (0 to 4.5 dB, 0.5 dB steps)
System latency
Monitored parameters
Introduction 1–29 MN-CDM-425
54 milliseconds maximum (for a system operating at 100 ksps, and assuming a WAN
buffer of 20 milliseconds, not including satellite path)
Tx and Rx ModCods
Local and Remote signal to noise ratio (SNR)
(-3.0 dB to +22.0dB, 0.1dB resolution, +/- 0.5 dB accuracy)
Config and monitor menus displaying data rate, modulation and code rate update
dynamically with ModCod
CDM-425 Advanced Satellite Modem
00
BPSK
0.488
0.49
2.4
18.1
2.00
01
QPSK
0.533
1.07
2.2
39.6
4.38
02
QPSK
0.631
1.26
2.7
46.7
5.16
06
8-QAM
0.711
2.13
5.2
78.8
8.73
07
8-QAM
0.780
2.34
5.6
86.6
9.59
08
16-QAM
0.731
2.93
6.5
108.5
12.01
09
16-QAM
0.780
3.12
7.1
115.5
12.79
10
16-QAM
0.829
3.32
7.7
122.8
13.61
11
16-QAM
0.853
3.41
8.1
126.2
14.00
Revision 0
Table 1-5. VersaFEC ModCod Set
ModCod Modulation Code Rate
Spectral
efficiency,
bps/Hz
Typical
Eb/No, for
BER = 5 x 10-8
(dB)
Min. Data
Rate,
ACM Mode
(kbps)
03 QPSK 0.706 1.41 3.4 52.2 5.78
04 QPSK 0.803 1.61 3.8 59.6 6.60
05 8-QAM 0.642 1.93 4.6 71.5 7.91
Max. Data
Rate,
ACM Mode
(Mbps)
Introduction 1–30 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
1.4.7.2 VersaFEC-2 ACM
System type
Adaptive Coding and Modulation, using BPSK, QPSK, 8-ARY, 16-ARY, 32-ARY and
VersaFEC-2 Short-block and Long Block LDPC coding - total of 74 ModCods
Symbol Rate Range 37 ksps to 12.5 Msps (Long)
Interface 10/100 Base T Ethernet, with auto-negotiated Congestion Control
Remote SNR reporting
Automatically reported from remote modem – built in function at the physical layer –
requires no additional overhead
Max span of data rate 9:1 over range of adaptation
Switch point (decreasing SNR) Corresponds to SNR (Es/No) that gives BER = 1 x 10
-8
(margin set to 0 dB)
Switch point hysteresis 0.3 dB
Max fading rate Approximately 1 dB/second (higher if Target Eb/No margin > 1 dB)
Max ModCod update rate 1 update every 1.7 seconds
• Maximum ModCod (ModCod00 through ModCod37, Long Block)
• Maximum ModCod (ModCod00 through ModCod35, Short Block)
Configurable parameters
• Remote Demod Unlock Action: Go to minimum ModCod
• Target SNR margin (0 to 4.5 dB, 0.5 dB steps)
System latency @ 100 ksps
Long Block - 205 milliseconds max (not including WAN buffer, or satellite path)
Short Block – 40.4 milliseconds max (not including WAN buffer, or satellite path)
• Tx and Rx ModCods
• Local and Remote SNR
Monitored parameters
• (-3.0 dB to +22.0dB, 0.1dB resolution, +/- 0.5 dB accuracy)
• Config and monitor menus displaying data rate, modulation and code rate update
• Dynamically with ModCod
List of ModCods See Table 1-6 and Table 1-7
Introduction 1–31 MN-CDM-425
CDM-425 Advanced Satellite Modem
00
BPSK
0.489
0.489
4800
-1.3
79
18.0
6.1
37
12.5
01
QPSK
0.489
0.977
9600
1.5
153
18.0
12.2
37
12.5
02
QPSK
0.537
1.075
10560
2.0
170
19.3
13.4
37
12.5
03
QPSK
0.586
1.173
11520
2.6
185
21.1
14.7
37
12.5
04
QPSK
0.611
1.221
12000
2.8
193
22.0
15.3
37
12.5
05
QPSK
0.635
1.270
12480
3.2
200
22.9
15.9
37
12.5
06
QPSK
0.660
1.319
12960
3.5
208
23.7
16.5
37
12.5
07
QPSK
0.684
1.368
13440
3.7
215
24.6
17.1
37
12.5
08
QPSK
0.733
1.466
14400
4.4
231
26.4
18.3
37
12.5
09
8-ARY
0.521
1.564
15360
5.1
246
28.1
19.5
37
12.5
10
8-ARY
0.537
1.612
15840
5.4
254
29.0
20.2
37
12.5
11
8-ARY
0.562
1.686
16560
5.6
265
30.3
21.1
37
12.5
12
8-ARY
0.586
1.759
17280
5.8
276
31.7
22.0
37
12.5
13
8-ARY
0.611
1.832
18000
6.0
287
33.0
22.9
37
12.5
14
8-ARY
0.635
1.906
18720
6.2
299
34.3
23.8
37
12.5
15
8-ARY
0.660
1.979
19440
6.5
311
35.6
24.7
37
12.5
16
8-ARY
0.684
2.052
20160
6.9
322
36.9
25.0
37
12.2
17
8-ARY
0.708
2.125
20880
7.2
333
38.3
25.0
37
11.8
18
8-ARY
0.733
2.199
21600
7.5
345
39.6
25.0
37
11.4
19
16-ARY
0.586
2.345
23040
8.1
368
42.2
25.0
37
10.7
20
16-ARY
0.611
2.443
24000
8.6
383
44.0
25.0
37
10.2
21
16-ARY
0.635
2.541
24960
8.9
398
45.7
25.0
37
9.8
22
16-ARY
0.660
2.638
25920
9.2
413
47.5
25.0
37
9.5
23
16-ARY
0.684
2.736
26880
9.6
429
49.3
25.0
37
9.1
24
16-ARY
0.708
2.834
27840
10.0
444
51.0
25.0
37
8.8
25
16-ARY
0.733
2.932
28800
10.5
459
52.8
25.0
37
8.5
26
16-ARY
0.757
3.029
29760
10.9
474
54.5
25.0
37
8.3
27
16-ARY
0.782
3.127
30720
11.4
489
56.3
25.0
37
8.0
28
32-ARY
0.660
3.298
32400
12.0
517
59.4
25.0
37
7.6
29
32-ARY
0.684
3.420
33600
12.5
535
61.6
25.0
37
7.3
30
32-ARY
0.708
3.542
34800
12.9
554
63.8
25.0
37
7.1
31
32-ARY
0.733
3.664
36000
13.3
573
66.0
25.0
37
6.8
32
32-ARY
0.757
3.787
37200
13.7
592
68.2
25.0
37
6.6
33
32-ARY
0.782
3.909
38400
14.2
610
70.4
25.0
37
6.4
34
32-ARY
0.801
4.007
39360
14.7
625
72.1
25.0
37
6.2
35
32-ARY
0.831
4.153
40800
15.2
648
74.8
25.0
37
6.0
36
32-ARY
0.855
4.275
42000
16.0
667
77.0
25.0
37
5.8
37
32-ARY
0.879
4.397
43200
16.7
685
79.2
25.0
37
5.7
Revision 0
Table 1-6. The VersaFEC-2 ModCod Set – Long Block
ModCod Modulation
Code
Rate
Spectral
efficiency,
bps/Hz
Block
size,
bits
Typical *
Es/No
(SNR), for
BER = 1 x 10
(dB)
128 kbps
-8
Latency
at
(ms)
Min.
Data Rate,
CCM Mode
(kbps)
Max.
Data Rate,
CCM Mode
(Mbps)
Min Sym
Rate, ACM
Mode
(ksps)
Max Sym
Rate, ACM
Mode
(Msps)
Introduction 1–32 MN-CDM-425
CDM-425 Advanced Satellite Modem
00
BPSK
0.489
0.489
800
-0.2
16
18.0
2.0
37
1
01
QPSK
0.489
0.977
1600
2.3
30
18.0
2.0
37
1
02
QPSK
0.537
1.075
1760
2.8
33
19.3
2.0
37 1 03
QPSK
0.586
1.173
1920
3.4
36
21.1
2.0
37
1
04
QPSK
0.611
1.221
2000
3.7
37
22.0
2.0
37
1
05
QPSK
0.635
1.270
2080
3.9
38
22.9
2.0
37 1 06
QPSK
0.660
1.319
2160
4.2
39
23.7
2.0
37
1
07
QPSK
0.684
1.368
2240
4.5
41
24.6
2.0
37
1
08
QPSK
0.733
1.466
2400
5.2
43
26.4
2.0
37 1 09
8-ARY
0.521
1.564
2560
5.6
46
28.1
2.0
37
1
10
8-ARY
0.537
1.612
2640
5.9
47
29.0
2.0
37
1
11
8-ARY
0.562
1.686
2760
6.2
49
30.3
2.0
37 1 12
8-ARY
0.586
1.759
2880
6.4
51
31.7
2.0
37 1 13
8-ARY
0.611
1.832
3000
6.6
53
33.0
2.0
37 1 14
8-ARY
0.635
1.906
3120
6.9
55
34.3
2.0
37
1
15
8-ARY
0.660
1.979
3240
7.2
57
35.6
2.0
37
1
16
8-ARY
0.684
2.052
3360
7.5
59
36.9
2.0
37
1
17
8-ARY
0.708
2.125
3480
7.8
61
38.3
2.0
37
1
18
8-ARY
0.733
2.199
3600
8.3
63
39.6
2.0
37
1
19
16-ARY
0.586
2.345
3840
8.7
67
42.2
2.0
37
1
20
16-ARY
0.611
2.443
4000
9.0
70
44.0
2.0
37
1
21
16-ARY
0.635
2.541
4160
9.3
73
45.7
2.0
37
1
22
16-ARY
0.660
2.638
4320
9.7
76
47.5
2.0
37 1 23
16-ARY
0.684
2.736
4480
10.3
79
49.3
2.0
37
1
24
16-ARY
0.708
2.834
4640
10.7
82
51.0
2.0
37
1
25
16-ARY
0.733
2.932
4800
11.0
85
52.8
2.0
37 1 26
16-ARY
0.757
3.029
4960
11.6
88
54.5
2.0
37 1 27
16-ARY
0.782
3.127
5120
12.2
91
56.3
2.0
37 1 28
32-ARY
0.660
3.298
5400
12.8
93
59.4
2.0
37
1
29
32-ARY
0.684
3.420
5600
13.1
96
61.6
2.0
37
1
30
32-ARY
0.708
3.542
5800
13.4
99
63.8
2.0
37 1 31
32-ARY
0.733
3.664
6000
14.0
102
66.0
2.0
37
1
32
32-ARY
0.757
3.787
6200
14.4
105
68.2
2.0
37
1
33
32-ARY
0.782
3.909
6400
14.8
109
70.4
2.0
37 1 34
32-ARY
0.801
4.007
6560
15.2
112
72.1
2.0
37
1
35
32-ARY
0.831
4.153
6800
15.8
117
74.8
2.0
37
1
Revision 0
Table 1-7. The VersaFEC-2 ModCod Set – Short Block
ModCod Modulation
Code
Rate
Spectral
efficiency,
bps/Hz
Block
size,
bits
Typical *
Es/No
(SNR), for
BER = 1 x 10
(dB)
128 kbps
-8
Latency
at
(ms)
Min.
Data Rate,
CCM Mode
(kbps)
Max.
Data Rate,
CCM Mode
(Mbps)
Min Sym
Rate, ACM
Mode
(ksps)
Max Sym
Rate, ACM
Mode
(Msps)
Introduction 1–33 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
1.4.8 Miscellaneous
Front Panel
Loopbacks Internal IF loopback, RF loopback, digital loopback, and inward/outward loopback
Fault relays Hardware fault, Rx and Tx Traffic Alarms, Open Network Backward Alarms
M&C Interface EIA-232 and EIA-485 (addressable multidrop, 2-wire or 4-wire) or Ethernet (10/100 BaseT)
M&C Software Serial comms, SNMP, Telnet, HTTP (Web Server)
Firmware update FTP protocol via Ethernet port
Dimensions 1RU high, 14.0 inches (355.6 mm) deep
Weight 8.0 lbs (3.6 kg) maximum (All option cards and 48V BUC supply installed)
AC consumption 43 watts (typical)
AC operating voltage
Tactile keypad, 6 keys (up, down, left, right, ENTER, CLEAR)
Vacuum Fluorescent Display (blue) – two lines @ 40 characters/line
Type: Form C Contacts. Rating: Up to ±50 volts, maximum 0.5 Amp
200 watts (typical, and 48 volt BUC supply installed)
100-240 VAC Nominal – autosensing
90-264 VAC Maximum
DC consumption
(option)
DC operating voltage 20-6 0 VDC Nominal
Operating temperature 32°-122°F (0°-50°C)
40 watts (typical)
195 watts (typical, and 48 volt BUC supply installed)
36-60 VDC Maximum
1.4.9 Approvals
EN 61000-3-2
EN 55022 Class B
(Emissions)
“CE” as follows:
FCC Federal Communications Commission Federal Code of Regulation FCC Part 15, Subpart B.
EN 50082-1 (Immunity)
EN 60950-1 (Safety)
EN 61000-3-3
EN 61000-4-2
EN 61000-4-4
EN 61000-4-5
EN 61000-4-6
EN 61000-4-8
EN 61000-4-9
EN 61000-4-11
EN 61000-4-13
Introduction 1–34 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
Chapter 2. INSTALLATION
2.1 Unpack and Inspect the Shipment
Figure 2-1. Unpack and Inspect the Shipment
Installation 2–1 MN-CDM-425
CDM-425 Advanced Satellite Modem
Inspect the equipment for damage. If damage exists, immediately contact the carrier and
Comtech EF Data to submit a damage report.
Revision 0
The CDM-425 Advanced Satellite Modem, its optional Installation and Operation Manual
(otherwise available online at http://www.comtechefdata.com), and its power cord were packaged
and shipped in a reusable cardboard carton containing protective foam spacing.
CAUTION – THIS EQUIPMENT CONTAINS PARTS AND ASSEMBLIES SENSITIVE
TO DAMAGE BY ELECTROSTATIC DISCHARGE (ESD). USE ESD
PRECAUTIONARY PROCEDURES WHEN HANDLING THE EQUIPMENT.
Once opened, inspect the shipment.
Step Task
1
Keep all shipping materials.
2 Check the packing list to make sure the shipment is complete.
3
4
Read the manual.
2.2 Modem - Rack Enclosure Installation
Mount the modem into its assigned position in the rack enclosure (Figure 2-2). Use, as required:
• A standard rack-mounted shelf;
• User-supplied screws to secure the front panel to the rack enclosure threaded front
mounting rails;
• Comtech EF Data’s optional KT/6228 (4”) or KT/6228 (10”) Rear-Mounting Support
Brackets Kit (Figure 2-3).
Installation 2–2 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
CAUTION – When mounting the modem into a rack enclosure:
• PROPER GROUNDING PROTECTION IS REQUIRED. The equipment must be
connected to the protective earth connection at all times. It is therefore
imperative that the modem is properly grounded, using the ground stud provided
on the modem rear panel, during installation, configuration, and operation.
o In Finland: "Laite on liitettävä suojamaadoituskoskettimilla varustettuun
pistorasiaan."
o n Norway: “Apparatet må tilkoples jordet stikkontakt.”
o In Sweden: “Apparaten skall anslutas till jordat uttag.”
• PROPER AIR VENTILATION IS REQUIRED. In a rack system where there is
high heat discharge, provide forced-air cooling with top- or bottom-mounted
fans or blowers.
o Make sure there is adequate clearance inside the enclosure, especially at
the side for air ventilation.
o Air temperature inside the rack enclosure should never ex ceed 50°C
(122°F).
For information about custom rack enclosures, contact Comtech EF Data
Product Support.
• The CDM-425 CANNOT have rack slides mounted to the sides of the chassis.
Cooling fans and exhaust vents are provided here – air flow must not be
impeded. Comtech EF Data recommends that an alternate method of support
is provided within the rack, such as standard rack shelves or the optional
Rear-Mounting Support Bracket Kit. If there is any doubt, contact Comtech EF
Data Product Support.
Installation 2–3 MN-CDM-425
CDM-425 Advanced Satellite Modem
2
CDM-425 Advanced Satellite Modem
3
Standard Rack Shelving
4
Rack Enclosure Threaded Front Mounting Rail (typical)
5
Modem Front Panel
6
User-supplied Screws
Revision 0
Feature Description
1 Custom Rack Enclosure
Figure 2-2. Modem - Rack Enclosure Installation
Installation 2–4 MN-CDM-425
CDM-425 Advanced Satellite Modem
1
Back of modem
2
Rack Enclosure Threaded Rear Mounting Rail (typical)
1 2 2
HW/10-32SHLDR
Shoulder Screw, #10
2 4 4
HW/10-32FLT
Flat Washer, #10
3 2 2
HW/10-32SPLIT
Lock Washer, #10
4 2 2
HW/10-32HEXNUT
Hex Nut, #10
5 4 4
HW/10-32x1/2RK
Bolt, #10, Rear Support Bracket
2
–
FP/6138-2
Bracket, Rear Support – 4”
–
2
FP/6138-3
Bracket, Rear Support – 10”
Revision 0
2.2.1 Optional Rear-Mounting Support Brackets Kits Installation
Feature Description
Kit / Quantity
Item
KT/6228-2 KT/6228-3
6
Figure 2-3. Rear-Mounting Support Brackets Kit Installation (Optional)
CEFD P/N Description
Installation 2–5 MN-CDM-425
CDM-425 Advanced Satellite Modem
Use the #10 flat washers, #10 split washers, and #10 hex nut to secure the #10 shoulder screws to the
modem chassis through the rear right and left side mounting slots as shown.
Use the #10 rack bracket bolts to install the rear support brackets onto the rack enclosure threaded rear
mounting rails.
Mount the modem into the rack enclosure. Ensure that the shoulders of the #10 shoulder screws
properly engage into the rear support bracket slots.
Revision 0
The following tools are required to ins t a ll th e optional KT/6228 (4”) or KT/6228 (10”) RearMounting Support Brack ets Kit:
• Medium Phillips screwdriver
• 5/32-inch SAE Allen Wrench
• Adjustable Crescent wrench
To install the optional KT/6228 (4”) or KT/6228 (10”) Rear-Mounting Support Brackets Kit, do
these steps:
Step Task
1
2
3
2.3 Modem Configuration
Chapter 6. FRONT PANEL OPERATION
The modem is shipped with a default 64 kbps, QPSK, Rate 1/2 configuration. There are no internal
jumpers to configure, no interface cards to install, and no other options to install. Configuration is
carried out entirely via the modem’s installed firmware – use the front panel key pad and di spl ay to
configure the modem locally.
The auto-sensing AC power supply does not requi re any adjustments. Simply
plug in the supplied line cord, and tur n o n th e rear panel switch.
2.4 Verify Modem Operation
Chapter 6. FRONT PANEL OPERATION
Use the modem’s test functions to quickly verify proper operation of the modem, without the need
for externally connected equipment. Use the front panel keypad and, from the top level menu,
select TEST: Mode → IF
should illuminate GREEN. If the modem does not pass this test, contact Comtech EF Data
Product Support for further assistance. See Chapter 6. FRONT PANEL OPERATION – Sect.
6.2.2 SELECT: Test Menu Branch.
↓ (IF LOOP).The demod should synchronize, and the Rx TRAFFIC LED
Installation 2–6 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
2.5 Connect the External Cables
Chapter 3. REAR PANEL CONNECTORS AND PINOUTS
Verify the correct operation via the Internal IF Loop test, then use the front panel keypad to
finalize your configuration as needed. Connect all external cables. If difficulties occur, contact
Comtech EF Data Pro duc t Sup port for further assistance.
Installation 2–7 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
BLANK PAGE
Installation 2–8 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
Chapter 3. REAR PANEL
CONNECTORS
3.1 Cabling Connection Types
The CDM-425 Advanced Satellite Modem uses a number of different cables. Each cable type is
typically dedicated to a specific mode of operation types – see Section 3.2.
1. Not all of these operational interface types may be available.
2. The European EMC Directive (EN55022, EN50082-1) requires using properly
shielded cables for DATA I/O. These cables must be double-shielded from
end-to-end, ensuring a continuous ground shield.
3.1.1 Coaxial Cable Connections
Coupling Type
AND PINOUTS
Connector Type
Plug Jack
Bayonet
(Type ‘BNC’ shown)
Threaded
(Type ‘N’ shown)
Figure 3-1. Coaxial Connector Examples
Rear Panel Connectors and Pinouts 3–1 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
The types of coaxial cables used by Comtech EF Data are ‘BNC’, ‘TNC’, ‘N’, ‘F’, and ‘SMA’.
Coaxial cables (plugs) and their mating connectors (jacks/sockets) are available in two coupling
styles: Bayonet or Threaded.
• Bayonet Coupling Style: The jack has a pair of guideposts that accommodate the plug’s
lockdown slots. This loc kdown design provides secure as s em bl y without over -tightening
the connection.
• Threaded Coupling Style: The jack features external threads. The plug shell features
internal threads, and has either a knurled outer surface to permit hand-tightening of the
connection, or hex flats to accommodate torqued installation.
• Connection Instructions:
• Bayonet Coupling Connections: Use the plug slots to guide, then slide the plug onto
the jack posts. Then, turn the plug clockwise until the jack posts are fully seated within
the plug slot.
• Threaded Coupling Connections: Engage the plug onto the jack threads, and then turn
the plug clockwise until it is fully threaded onto the jack. Do not over-tighten the
connection.
3.1.1.1 Type ‘BNC’
BNC connectors feature a Bayonet Coupling design.
3.1.1.2 Type ‘TNC’
TNC connectors feature a Threaded Coupling design similar to
Type ‘N’, Type ‘F,’ and Type ‘SMA’ connectors.
3.1.1.3 Type ‘N’
Type ‘N’ connectors feature a Threaded Coupling design similar
to Type ‘TNC’, Type ‘F’, and Type ‘SMA’ connectors.
3.1.1.4 Type ‘F’
Type ‘F’ connectors feature a Threaded Coupling design similar to
Type ‘TNC’, Type ‘N’, and Type ‘SMA’ connector s .
Rear Panel Connectors and Pinouts 3–2 MN-CDM-425
CDM-425 Advanced Satellite Modem
Type ‘D’ Connection Type
Revision 0
3.1.1.5 Type ‘SMA’ (S ubmi niature Version ‘A’)
Type ‘SMA’ connectors feature a Threaded Coupling design similar to
Type ‘TNC’, Type ‘N’, and Type ‘F’ connector s .
3.1.2 D-Subminiature Cable Connections
Example
Chassis Receptacles:
Female (TOP)
Male (BOTTOM)
Type ‘D’ Cable with Jack Screws
(female shown)
Figure 3-2. D-Subminiature Connector Examples
D-Subminiature connectors are also called Type ‘D’ or ‘D-Sub’ connectors. The connector pair
features multiple rows of pins (male side) coupled to mating sockets (female side). The cable plug
and chassis receptacle each feature a D-shaped profile that interlock to ensure proper pin
orientation and connector seating.
Either chassis receptacle gender features two jack nuts for secure assembly of the cable plug to
the chassis receptacle.
Whether its gender is male or female, the cable plug features two jack screws for secure
connection to the jack nuts provided on the mating chassis receptacle. The jack screws may be
hand tightened or tightened with a standard flat-blade screwdriver.
Connection Instructions: Orient the plug to the receptacle in the proper position. Press firmly
into place. Use the jack screws to secure the plug to the receptacle jack nuts. Do not over-tighten.
About connector pinout tables: Figure 3-2 identifies the Pin 1 location for either gender
connector. Unless noted otherwise, the connector pinout tables provided in this manual
arrange/order information (i.e., the Pin # column/row) based on this orientation.
Rear Panel Connectors and Pinouts 3–3 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
3.1.3 RJ-45, RJ-48 Cable Connections
The plug for an RJ-45 or RJ-48 cable features a flexible tab. The RJ-45 or RJ-48
jack features a mating slot. This design configuration assures proper installation
and pin orientation.
Connection Instructions: Press down the tab on the cable plug, and then insert
the plug into the RJ-4x jack. The connection is complete when the tab ‘clicks’ into
position inside the jack.
3.2 Cabling Conne ction s
The rear panel connectors provide all necessary external connections between the unit and other
equipment.
Figure 3-3. Rear Panel – AC Connection
Figure 3-4. Rear Panel – DC Connection
Rear Panel Connectors and Pinouts 3–4 MN-CDM-425
CDM-425 Advanced Satellite Modem
IF
BNC female (70/140MHz band)
Type ’N’ female (L-Band)
BNC female (70/140MHz band)
Type ’N’ female (L-Band)
Terrestrial Data
Data Interface
25-pin Type ‘D’ female
Serial synchronous data input/output
G.703, D&I or D&I++;
Quad E1 Ports 1 & 2
Auxiliary G.703
9-pin Type ‘D’ female
Quad E1 Ports 3 & 4
Unbalanced
Unbalanced In
BNC female
Transmit G.703 (DDI)
Insert Data In / Sub-rate Auxiliary Tx
Drop Data Output / Sub-rate Auxiliary Rx
10/100 Ethernet
(4X) RJ-45 female
10/100 Base-T management and data
Utility
Remote Control
9-pin Type ‘D’ male
Serial Remote Interface (EIA-232/485)
Alarms
15-pin Type ‘D’ male
Form C Alarms (relay closures)
PMSI
9-pin Type ‘D’ female
Pre-Mapped Symbol Interface (CnC)
1:1 Control
9-pin Type ‘D’ female
Connection to External 1:1 Controller
External Reference
BNC female
Input/output
Revision 0
Table 3-1. Rear Panel Connections
Connector
Group (Sect)
Sect. 3.2.1
Sect. 3.2.2
Rx
Tx
G.703
Data
Name Connector Type Function
IF Input
IF Output
Balanced G.703 9-pin Type ‘D’ female
Out
IDI BNC female
DDO BNC female
BNC female Receive G.703 (IDO)
G.703 In
G.703 Out
Sect. 3.2.3
Rear Panel Connectors and Pinouts 3–5 MN-CDM-425
CDM-425 Advanced Satellite Modem
Type ‘N’
Rx IF signal, L- band
BNC
Rx IF signal, 70/140 MHz band
Type ‘N’
Tx IF signal, L- band
BNC
Tx IF signal, 70/140 MHz band
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3.2.1 IF Connection Group
WARNING! THERE MAY BE DC VOLTAGES, UP TO A MAXIMUM OF 48 VOLTS,
PRESENT ON THE TYPE ‘N’ RX AND TX IF CONNECTORS.
3.2.1.1 Rx IF Connectors
Connector Type Description Direction
In
3.2.1.2 Tx IF Connectors
Connector Type Description Direction
Out
3.2.2 Terrestrial Data Connection Group
3.2.2.1 Data Interface (DB-25F)
The Data Interface connector is a 25-pin, Type ‘D’ female interface that
conducts data input and output signals to and from the modem, and
connects to customer’s terrestrial equipment, breakout pan el, or
protection switch.
Table 3-2. Data Interface Connector Pinouts
(R>L)
Pin #
25 (NOTE 2)
24 Transmit Clock A DTE to Modem TT A SCTE A TT A TT A 113
Generic Signal Description Direction
13 Clear to Send B * Modem to DTE CS B – – – 106
12 Internal Transmit Clock B Modem to DTE ST B SCT B ST B ST B 114
11 Transmit Clock B DTE to Modem TT B SCTE B TT B TT B 113
EIA-422
EIA 530
V.35 HSSI LVDS
Circuit
#
23
10
Rear Panel Connectors and Pinouts 3–6 MN-CDM-425
(NOTE 2)
Receiver Ready B Modem to DTE RR B – CA B RR B 109
CDM-425 Advanced Satellite Modem
Revision 0
(R>L)
Pin #
22
Generic Signal Description Direction
Data Set Ready B (NOTE 2) Modem to DTE DM B – – – –
Receive Clock B Modem to DTE RT B SCR B RT B RT B 115
9
EIA-422
EIA 530
V.35 HSSI LVDS
Circuit
#
21 (NOTE 2)
8 Receiver Ready A Modem to DTE RR A RLSD CA A RR A 109
20 (NOTE 2)
7 Signal Ground – SG SG SG SG 102
19 Request to Send B * DTE to Modem RS B - TA B – 105
6 Data Set Ready A (NOTE 2) Modem to DTE DM A DSR – – –
18
(NOTE 2)
Clear to Send A * Modem to DTE CS A CTS – – 106
5
17 Receive Clock A Modem to DTE RT A SCR A RT A RT A 115
4 Request to Send A * DTE to Modem RS A RTS TA A – 105
16 Receive Data B Modem to DTE RD B RD B RD B RD B 104
3 Receive Data A Modem to DTE RD A RD A RD A RD A 104
15 Internal Transmit Clock A Modem to DTE ST A SCT A ST A ST A 114
Transmit Data A DTE to Modem SD A SD A SD A SD A 103
2
14
Transmit Data B DTE to Modem SD B SD B SD B SD B 103
Shield – Shield FG Shield Shield 101
1
Notes:
1. When the rear-panel Light Emitting Diode (LED) marked “1:N Active!” is OFF, all of the signals shown above are
available and functional. In addition, pins not shown are not connected, and therefore no damage will occur if
other signals are connected to the additional pins.
2. When the rear-panel LED marked “1:N Active!” is ON, the signals shown highlighted are no longer available.
Furthermore, pins 6, 18, 20, 21, 22, 23 and 25 are reserved for use by the 1:N system. DO NOT connect signals
to any of these pins in this mode. Certain pins have Direct Current (DC) voltages present that may damage
equipment other than a Comtech EF Data redundancy switch.
3. For X.21 operation, use the EIA-422 pins, but ignore Receive Clock if the Modem is Data Terminal Equipment
(DTE), and ignore Transmit clocks if the Modem is Data Circtui-termination Equipment (DCE).
4. For Intermediate Data Rate (IDR) operation using G.703, this primary interface becomes the 8 kbps EIA-422
overhead channel.
Rear Panel Connectors and Pinouts 3–7 MN-CDM-425
CDM-425 Advanced Satellite Modem
5
Tx in (+)
DDI (+)
Port 1 Tx In (+)
9
Tx in (-)
DDI (–)
Port 1 Tx In (–)
4
–
DDO (–)
Port 1 Rx Out (–)
8
–
DDO (+)
Port 1 Rx Out (+)
3
GND
GND
7
–
IDI (+)
Port 2 Tx In (+)
2
–
IDI (–)
Port 2 Tx In (–)
6
Rx Out (+)
IDO (+)
Port 2 Rx Out (+)
1
Rx Out (–)
IDO (–)
Port 2 Rx Out (–)
Revision 0
3.2.2.2 G.703 Connectors
3.2.2.2.1 Balanced G.703 (DB-9F)
The Balanced G.703 connector is a 9-pin Type ‘D’ female connector. It is
used for single port G.703, D&I or D&I++. When used with Quad E1
operations, this connector serves Ports 1 and 2 of the Quad E1 interface.
Table 3-3. Balanced G.703 Connector Pinouts
(R>L)
Pin #
Signal Function
Serial G.703
GND
Signal Function
D&I or D&I++
Signal Function
Quad D&I
Rear Panel Connectors and Pinouts 3–8 MN-CDM-425
CDM-425 Advanced Satellite Modem
5
Tx in (+)
Port 3 Tx in (+)
9
Tx in (-)
Port 3 Tx in (–)
4
–
Port 3 Rx Out (+)
8
–
Port 3 Rx Out (–)
3
GND
7
–
Port 4 Tx in (+)
2
–
Port 4 Tx in (–)
6
Rx Out (+)
Port 4 Rx Out (+)
1
Rx Out (–)
Port 4 Rx Out (–)
3-5
CA-0000163
(2) DB-15F connections – see Table 3-6 for the connector pinout
3-6
CA-0000164
(2) RJ-48 F connections – see Table 3-7 for the connector pinout
KT-0000122 or
KT-0020570
Revision 0
3.2.2.2.2 Aux G.703 (DB-9F)
The Auxiliary G.703 connector is a 9-pin Type ‘D’ female connector. When
used with Quad E1 operations, this connector serves Ports 3 and 4 of the
Quad E1 interface.
Table 3-4. Auxiliary G.703 Connector Pinouts
(R>L)
Pin #
Signal Function
Serial G.703
Signal Function
Quad D&I
GND
3.2.2.2.3 Quad E1 Operation via the Balanced G.703 / Aux G.703
Connectors
Each adapter cable option provides for two of the four ports of the Quad E1
interface. If all four ports of Quad E1 are needed, the user will need to obtain a
quantity of (2X) of any adapter option.
For Quad E1 operation, optional Comtech EF Data cabling accessories may be purchased from
Comtech EF Data to adapt the Balanced G.703 or Auxiliary G.703 connectors as follows:
Figure CEFD Part No. Converts (1) 9-pin Type ‘D’ Connector (DB-9F) to:
3-7
Rear Panel Connectors and Pinouts 3–9 MN-CDM-425
Table 3-5. Data Cabling Accessories
(2) BNC 75Ω BNC-F connections – see Table 3-9 for the connector pinout
CDM-425 Advanced Satellite Modem
Port 1 or 3 Tx In (+)
5 9 ––
Port 1 or 3 Tx In (–)
9
1
––
Port 1 or 3 Rx In (+)
4
11
––
Port 1 or 3 Rx In (–)
8
3
––
Port 2 or 4 Tx In (+)
7
Port 2 of 4 Tx In (–)
2
––
1
Port 2 or 4 Rx In (+)
6
––
11
Port 2 or 4 Rx In (–)
1
––
3
GND
3
Revision 0
3.2.2.2.3.1 CA-0000163 Adapter Cable
Figure 3-5. CA-0000163 Adapter Cable (DB-9M (2X) DB-15F)
Table 3-6. CA-0000163 Connector Pinouts
Table ordered by Signal Function
Signal Function
Connector
P1 J1 J2
–– 9
2 2 ––
Twisted
Pair
X
X
X
X
Rear Panel Connectors and Pinouts 3–10 MN-CDM-425
CDM-425 Advanced Satellite Modem
Port 1 or 3 Tx In (+)
5 1 ––
Port 1 or 3 Tx In (–)
9
2
––
Port 1 or 3 Rx In (+)
4
4
––
Port 1 or 3 Rx In (–)
8
Port 2 or 4 Tx In (+)
7
Port 2 of 4 Tx In (–)
2
––
2
Port 2 or 4 Rx In (+)
6
––
4
Port 2 or 4 Rx In (–)
1
––
5
GND
3
Revision 0
3.2.2.2.3.2 CA-0000164 Adapter Cable
Figure 3-6. CA-0000164 Adapter Cable (DB-9M (2X) RJ-48F)
Table 3-7. CA-0000164 Connector Pinouts
Table ordered by Signal Function
Signal Function
Connector
P1 J1 J2
Twisted
Pair
X
5 ––
–– 1
3 3 ––
X
X
X
Rear Panel Connectors and Pinouts 3–11 MN-CDM-425
CDM-425 Advanced Satellite Modem
1
––
CA-0000347
Y-Cable Assembly, 6”, DB-9M 2X RJ-48 Male (See Table 3-9)
––
1
CA-0020710
Y-Cable Assembly, 3’, DB-9M 2X RJ-48 Male (See Table 3-9)
2
2
502-0532-001
Bolun Adapter, 2X RJ-48 Female 2X BNC 75Ω Female
Port 1 or 3 Tx In (+)
5 1 –– X 1
WHITE / ORANGE STRIPE
Port 1 or 3 Tx In (–)
9 2 –– 2 ORANGE
Port 1 or 3 Rx In (+)
4 4 –– X 3
WHITE / GREEN STRIPE
Port 1 or 3 Rx In (–)
8 5 –– 4 BLUE
Port 2 or 4 Tx In (+)
7
––
1 X 5
WHITE / BLUE STRIPE
Port 2 of 4 Tx In (–)
2
–– 2 6
GREEN
Port 2 or 4 Rx In (+)
6
––
4 X 7
WHITE / BROWN STRIPE
Port 2 or 4 Rx In (–)
1
–– 5 8
BROWN
GND 3 3 3 ––
Revision 0
3.2.2.2.3.3 KT-0000122/KT-0020570 Quad E1 Balanced/Unbalanced Adapter
Cable Kits
Figure 3-7. Quad E1 Balanced/Unbalanced Adapter Cable Kits
Table 3-8. Quad E1 Balanced/Unbalanced Adapter Kits
Kit / Quantity
KT-0000122 KT-0020570
P1 PINOUT (Table ordered by Signal Function)
Signal Function
CEFD Part
No.
Table 3-9. CA-0000347/CA-0020710 Connector Pinouts
Connector
P1 J1 J2
Twisted
Pair
Description
J1/J2 TYPICAL WIRE CHART
PIN WIRE COLOR
Rear Panel Connectors and Pinouts 3–12 MN-CDM-425
CDM-425 Advanced Satellite Modem
G.703 Unbalanced Rx (IDO)
Out
G.703 Unbalanced Tx (DDI)
In
IDI (Insert Data Input)
In
DDO (Drop Data Output)
Out
Revision 0
3.2.2.2.4 Unbal G.703 / Insert Data Out (IDO), Drop Data In (DDI)
Connector Type Description Direction
BNC
3.2.2.2.5 G.703 Insert Data In (IDI), Drop Data Out (DDO)
Connector Type Description Direction
BNC
3.2.2.3 Quad 10/100 Ethernet (RJ-45)
These are four standard RJ-45 female connectors, operating at 10/100 Mbps, half
and full duplex, auto-negotiating.
Rear Panel Connectors and Pinouts 3–13 MN-CDM-425
CDM-425 Advanced Satellite Modem
1
6
2
7
3
8
4
9
5
Revision 0
3.2.3 Utility Connections Group
3.2.3.1 Remote Control (DB-9M)
The Remote Control interface is a 9-pin Type ‘D’ male connector. It is
intended for connection to an M&C computer or terminal device, and is user
selectable for either EIA-232 or EIA-485.
Table 3-10. Remote Control Connector Pinouts
(L>R)
Pin #
Ground ––
EIA-485 Receive Data ‘B’ * In
EIA-232 Transmit Data Out
EIA-485 Receive Data ‘A’ * In
EIA-232 Receive Data In
EIA-485 Transmit Data ‘B’ Out
Reserved – Do Not Use ––
EIA-485 Transmit Data ‘A’ Out
Ground ––
*Use for EIA-485 2-wire operation
Description Direction
Rear Panel Connectors and Pinouts 3–14 MN-CDM-425
CDM-425 Advanced Satellite Modem
1
9
2
10
3
11
4
12
5
13
6
14
7
15
8
Revision 0
3.2.3.2 Alarms (DB-15M)
Unit alarms are provided on this 15-pin Type ‘D’ male connector.
Table 3-11. Alarm Interface Connector Pinouts
(L>R)
Pin #
Name Signal Function
GND Ground
EXT-OFF EXT Carrier OFF
AGC AGC Voltage (Rx signal level, 0 to 10 Volts)
N/A Spare (No connection)
RX-Q Rx Q Channel (Constellation Monitor)
RX-I RX I Channel (Constellation Monitor)
UNIT-COM Unit Fault
UNIT-NO Unit Fault (Energized, No Fault)
UNIT-NC Unit Fault (De-energized, No Fault)
TX-COM Tx Traffic
TX-NO Tx Traffic (Energized, No Fault)
TX-NC Tx Traffic (De-energized, No Fault)
RX-COM Rx Traffic
RX-NO Rx Traffic (Energized, No Fault)
RX-NC Rx Traffic (De-energized, No Fault)
Rear Panel Connectors and Pinouts 3–15 MN-CDM-425
CDM-425 Advanced Satellite Modem
5
9
4
8
3
7
2
6
1
Revision 0
3.2.3.3 Pre-Mapped Symbol Interface (PMSI) Connector (DB-9F)
The Pre-Mapped Symbol Interface (PMSI) is a 9-pin Type ‘D’ female
connector. The PMSI is an EIA-485 multidrop bus system, used in tandem
with Carrier-in-Carrier (CnC), where one device transmits, and all oth er
devices on the multidrop bus are configured to receive.
Table 3-12. PMSI Connector Pinouts
(R>L)
Pin #
Description Direction
PMSI MSB – EIA-485 (+) In/Out
PMSI MSB – EIA-485 (–) In/Out
PMSI LSB – EIA-485 (+) In/Out
PMSI LSB – EIA-485 (–) In/Out
PMSI symbol clock – EIA-485 (+) In/Out
PMSI symbol clock – EIA-485 (–) In/Out
Spare (No connection) ––
Spare (No connection) ––
Ground ––
Rear Panel Connectors and Pinouts 3–16 MN-CDM-425
CDM-425 Advanced Satellite Modem
5
9
4
8
3
7
2
6
1
BNC
External Reference
In/Out
Revision 0
3.2.3.4 1:1 Control (DB-9F)
The 1:1 Control connector is intended only for connection to a CRS-170A or
CRS-180 Redundancy Switch.
The 1:1 Control connector is a 9-pin Type ‘D’ female connector.
Table 3-13. 1:1 Control Interface Connector Pinouts
3.2.3.5 Ext Ref In/Out
Connector Type Description Direction
(R>L)
Pin #
Description Direction
Ground ––
Fused +12 volt Out
Redundancy In 2
Redundancy Out 2
Redundancy In 1
Redundancy Out 1
Out
In
Out
In
Out
Receive Serial Data – Auxiliary Channel In
Transmit Serial Data – Auxiliary Channel Out
Ground ––
Rear Panel Connectors and Pinouts 3–17 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
3.3 Ground and Power Connections
3.3.1 Chassis Ground Interface
CAUTION – PROPER GROUNDING PROTECTION IS REQUIRED. The equipment must
be connected to the protective earth connection at all times. It is therefore imperative
that the unit is properly grounded, using the ground stud provided on the unit rear
panel, during installation, configuration, and operation.
Figure 3-8. Chassis Ground Interface – AC Chassis (CEFD P/N PL-0021674)
Figure 3-9. Chassis Ground Interface – DC Chassis (CEFD P/N PL-0021408)
Use the #10-32 stud, located adjacent to the power interface, for connecting a common chassis
ground among equipment.
The AC power interface provides the safety ground.
Rear Panel Connectors and Pinouts 3–18 MN-CDM-425
CDM-425 Advanced Satellite Modem
1
On / Off Switch
2
Press-fit Fuse Holder
3
IEC-60320 Type C14 Three-prong Connector
100V to 240V AC, +6%/-10%, autosensing
(total absolute max. range is 90V to 264V AC)
Connection Type
IEC-60320 Type C13/C14
Line and neutral fusing
T4A ( 250V AC operation)
Revision 0
3.3.2 Standard 100V/240V Alternating Current (AC) Power Interface
Figure 3-10. AC Chassis Power Interface (CEFD P/N PL/12587-1)
Table 3-14. AC Chassis Power Interface Features and Description
Feature Description
Input Power
Input Voltage
Fuse Protection
Table 3-15. AC Chassis Pow er Specific at io ns
AC Power Specifications
43 watts (typical)
200 watts (typical, 48 volt BUC supply installed)
(2X) 5mm x 20mm Slow-blow type fuses:
Rear Panel Connectors and Pinouts 3–19 MN-CDM-425
CDM-425 Advanced Satellite Modem
TBD
AC to 24V DC Conversion Kit
TBD
AC to 48V DC Conversion Kit
TBD
AC Primary Power Supply: 100-240 VAC (65W Power Supply) w/required cables
TBD
AC Primary Power Supply: 100-240 VAC (120W Power Supply) w/required cables
TBD
AC 65W Power Supply
TBD
AC 120W Power Supply
TBD
AC Power Cord, Standard (IEC-60320 Type C13) – USA
CA/90025-5FT
AC Power Jumper Cord, Standard (IEC-60320 Type C13)
KT/11633-1
AC Power Cord Retainer Kit (for any AC Cord)
CA/17850
AC Power Cord – European / French
PP-0000097
AC Power Cord – Japanese
PP-0020556
AC Power Cord – India
Revision 0
3.3.2.1 AC Operation – Accessories
Contact Comtech EF Data Product Support to purchase any of these available accessories:
Table 3-16. AC Operation Accessories
CEFD P/N Description
3.3.2.2 AC Operation – Apply Power
Figure 3-11. AC Power Connection
To apply AC power (Figure 3-11), do these steps:
1. Plug the provided AC power cord female end into the unit.
2. Plug the AC power cord male end into the user-supplied power source.
3. Switch the unit ON.
Rear Panel Connectors and Pinouts 3–20 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
3.3.2.3 AC Operation – Fuse Replacement
For AC operation, the CDM-425 Advanced Satellite Modem uses two common 5mm x 20mm
Slow-blow fuses – one each for line and neutral connections. The fuses are contained within a
fuse holder that is press-fit into the body of the IEC power module (located on the rear panel,
Figure 3-12).
Figure 3-12. AC Fuse Replacement
WARNING! DISCONNECT THE POWER SUPPLY BEFORE PROCEEDING!
To replace the fuse(s), do these steps:
1. Unseat the fuse holder from the IEC power module.
a. Use the slot to pry the holder outward from the IEC power module.
b. Pull the holder straight out, and then swing the holder away from the module.
2. Remove and replace the T4A (4 Amp) fuses as needed.
CAUTION – FOR CONTINUED OPERATOR SAFETY, ALWAYS REPLACE
THE FUSES WITH THE CORRECT TYPE AND RATING.
3. Reseat the fuse holder in the IEC power module.
Rear Panel Connectors and Pinouts 3–21 MN-CDM-425
CDM-425 Advanced Satellite Modem
1
On / Off Switch
2
Power Terminal Block
3
Screw-in Fuse Holders / Receptacles
40 watts (typical)
195 watts (typical, 48 volt BUC supply installed)
Input Voltage
43 – 60 VDC Nominal
Connector Type
Terminal Block
(2X) 5mm x 20mm Slow-blow type fuses:
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3.3.3 Optional 48V Direct Current (DC) Power Interface
Figure 3-13. DC Chassis Power Interface (Optional) (CEFD P/N PL-0021327)
Table 3-17. DC Chassis Power Interface Features and Description
Feature Description
Table 3-18. DC Chassis Power Specifications
Input Power
DC Power Specifications
Fuse Protection
Modem Fuse: 3Amp/250Volts
BUC Fuse: 6.3 Amp/250 Volts
Rear Panel Connectors and Pinouts 3–22 MN-CDM-425
CDM-425 Advanced Satellite Modem
PS-0020607
DC 48V 70W Power Supply
CA-0000455
DC Pigtail Adapter
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3.3.3.1 DC Operation – Accessories (Optional)
Contact Comtech EF Data Product Support to purchase any of these available accessories:
Table 3-19. DC Operation Accessories (Optional)
CEFD P/N Description
3.3.3.2 DC Operation – Apply Power (Optional)
To apply DC power, do these steps:
1. Connect the user-supplied (+) and (–) DC power leads to their respective terminals.
Number 18 AWG minimum wires are recommended.
2. Connect the user-supplied DC power leads to the power source.
3. Switch the unit ON.
Figure 3-14. DC Chassis Connection (Optional)
Rear Panel Connectors and Pinouts 3–23 MN-CDM-425
CDM-425 Advanced Satellite Modem
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3.3.3.3 DC Operation – Fuse Replacement (Optional)
For DC operation the CDM-425 requires two different fuses that are cont ained wit hin the
individual screw-in receptacles below the terminal block (located on the rear panel, Figure 3-15).
Figure 3-15. DC Chassis Fuse Replacement (Optional)
WARNING! DISCONNECT THE POWER SUPPLY BEFORE PROCEEDING!
To replace the fuses, do these steps:
1. Unscrew either fuse holder from its receptacle. Then, remove and replace the modem
and/or the BUC fuse(s):
a. Use T3A (3 Amp) 250V fuses for modem operation (left-hand receptacle).
b. Use T6.3A (6.3 Amp) 250V fuses when a Block Upconverter (BUC) is installed
(right-hand receptacle).
CAUTION – FOR CONTINUED OPERATOR SAFETY, ALWAYS REPLACE
THE FUSES WITH THE CORRECT TYPE AND RATING.
2. Screw either fuse holder back into its receptacle.
Rear Panel Connectors and Pinouts 3–24 MN-CDM-425
CDM-425 Advanced Satellite Modem
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Chapter 4. UPDATE FIRMWARE
4.1 Update Firmware via the Internet
Make sure to operate the CDM-425 with the latest available firmware.
The CDM-425 Advanced Satellite Modem is factory-shipped with its latest ver si on of operati ng
firmware. If a firmware update is needed, once Ethernet connectivity has been established with
the unit, you can download the update archive file from the Comtech EF Data Web site
(www.comtechefdata.com
Perform the CDM-425 Advanced Satellite Modem Firmware Update without opening the unit as
follows:
• Connect the rear panel serial “Remote Control” port or “10/100 Ethernet” port to a serial
or Ethernet port of the User PC.
• Download the firmware update archive file via the Internet to the User PC.
• Use File Transfer Protocol (FTP) to transfer the extracted firmware update files from the
User PC to the unit.
), or obtain it throu gh e-mail from Comtech EF Data Product Support.
Updating Firmware 4–1 MN-CDM-425
CDM-425 Advanced Satellite Modem
is available for download from the CEFD Web site.
o obtain the firmware update for
Revision 0
4.2 About Firmware Files, Naming, Versions, and Archive Formats
Comtech EF Data’s Web site catalogues its firmware update files by product type (e.g., modem,
converter, etc.) and specific model/optional configuration. For example, the base modem bulk
firmware download hyperlink appears as F0020731*_V### (where ‘###’ indicates the firmware
version number, and ‘*’ is the revision letter of that version).
In addition to this base modem bulk firmware archive file, downloads are available for the
modem’s optional IP Packet Processor Module, available with or without AES Encryption. This
module requires separate firmware update.
Firmware updates are available from Comtech EF Data per the following table:
Table 4-1. Firmware Update File Information
Label EXE/ZIP Filename
F0021103*_V### FW-0021103*
F0021125*_V### FW-0021125*
CONTACT CEFD PRODUCT SU PPORT
Only firmware for the CDM-425 base mod em and IP Packet Processor Module
without AES Encryption
Contact Comtech EF Data Product Support t
the CDM-425 IP Packet Processor Module with AES Encryption.
The firmware download files are available from Comtech EF Data in two archive file formats: *.exe
(self extracting) and *.zip (compressed). Some firewalls will not allow the downloading of *.exe
files; in this case, download the *.zip file instead. If applicable, one version prior to the current
release is also available for download.
Contains Image File (where ‘*’ is the revision letter and ‘###’
or ‘#.#.#’ is the version number)
FW-0021103*_CDM425_#.#.#.bin
Base modem firmware
FW-0021125*-#.#.#.bin
IP Packet Pr oces s or M odul e op ti on without AES Encryption.
FW-0021126*-#.#.#.bin
IP Packet Proc es sor Mod ule opti on with AES Enc ryption.
For additional help with "zipped" file types, refer to the help files provided with the
"PKZIP for Windows", "WinZip", or "ZipC entral" file archiving programs. “PKZIP
for Command-line” is not supported due to file naming conventions.
To verify the correct firmware number, see Sect. 4.3.1 Getting Started: Prepare for the
Firmware Download, Step 6.
Updating Firmware 4–2 MN-CDM-425
CDM-425 Advanced Satellite Modem
Rate)
• Port Flow
Control=NONE
• Display New line Rx/Tx:
CR
Revision 0
4.3 Ethernet FTP Upload Procedure
4.3.1 Getting Started: Prepare for the Firmware Download
1. First, identify the CDM-425 Advanced Satellite Modem firmware (number/revision
letter/version number) and the assigned Ethernet Traffic/Management IP Ad dr es s .
User-supplied items needed:
• A Microsoft Windows-based PC, equipped with available serial and Ethernet
ports; a compatible Web browser (e.g., Internet Explorer); and a terminal
emulator program (e.g., Tera Term or HyperTerminal).
• A 9-pin serial cable and a standard CAT5 Ethernet cable to connect the modem
to the User PC.
2. Use the 9-pin serial cable to connect the modem's ‘Remote Control’ port to a serial port
on the User PC. Use an Ethernet hub, switch, or a direct CAT5 Ethernet cable connection
to connect the modem's “10/100 Ethernet” port to the User PC.
Figure 4-1. Modem to PC Connection
3. On the PC, open the terminal emulator program.
Refer to your terminal emulator program HELP feature or user guide
for operating and configuration instructions.
4. Configure the utility program serial port communication and terminal display operation:
• 38400 bps (Baud
• Parity=NO
• Local Echo=ON
• 8 Data Bits • 1 Stop Bit
Updating Firmware 4–3 MN-CDM-425
CDM-425 Advanced Satellite Modem
Revision 0
5. On the CDM-425 Advanced Satellite Modem, turn on/connect the power source:
Figure 4-2. Modem On/Off Switch
6. Identify the firmware information and Ethernet Traffic/Management IP Address using one
of the following methods:
• Using the modem front panel menus:
Firmware Info – Use the SELECT: UTILITIES Firmware Base-modem
Image#1 or Image#2 menu branches, as shown in this example:
Image #X Bulk: DD/MM/YY
FW-0020731X #.#.# ()
Ethernet IP Address – Use the CONFIG: IP Addresses menu branch, as
shown in this example:
Ethernet IP Address/Range:
192.168.001.002/24 ()
• Using the CDM-425 HTTP Interface (via the User PC Web Browser) – this
assumes that you have already noted the Traffic/Management IP Address, which
was previously required to open the CDM-425 HTTP Interface:
Firmware Info – Use the ‘Admin | Firmware | Base Modem’ and, if needed,
the ‘Admin | Firmware | Packet Processor’ pages, as shown in Figure 4-3.
Updating Firmware 4–4 MN-CDM-425
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