cdm-740 advanced satellite modem · errata page 2 of 4 agile doc id er-mncdm740.ea0 this document...

Part Number MN-CDM740 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-740 Advanced Satellite Modem

Installation and Operation Manual

Errata Page 1 of 4

AGILE DOC ID ER-MNCDM740.EA0 THIS DOCUMENT IS NOT SUBJECT TO REVISION/UPDATE! AGILE CO10672

Errata A Comtech EF Data Documentation Update

Subject: Update CDM-740 Firmware Upgrade Procedure, Front Panel

Operation, and Web Server login parameters Date: January 19, 2010

Original Manual Part Number/Rev:

MN-CDM740 Rev 0

Errata Number/ Agile Document ID:

ER-MNCDM740.EA0

Agile CO Number: CO 10672

Comments: Affected manual / page content will be updated, as indicated below and on the pages that follow, upon next formal manual revision.

Affected content: • Chapter 4. FLASH UPGRADING, Update Sect. 4.2 Ethernet Upload Procedure

• Chapter 5. FRONT PANEL OPERATION, Replace Sect. 5.4.2.5 (CONFIG:) Rx Data

• Chapter 6. ETHERNET MANAGEMENT, Replace Sect. 6.5.3. User Login

Errata Page 2 of 4


I. Chapter 4. FLASH UPGRADING Update Sect. 4.2 Ethernet Upload Procedure (pages 4-2, 4-3) Instructions: Steps 3, 4, and 9 in Sect. 4.2 are replaced in their entirety as follows:

o

o

3. Download the correct firmware file to this temporary folder. As shown in Figure 4-1:

1. Go online to: www.comtechefdata.com;

2. Click on: Support tab;

3. Click on: Software Downloads drop-down or hyperlink from Support page;

4. Click on: Download Flash and Software Update Files icon;

5. Click on: (Select a Product Line) Satellite Modems hyperlink;

6. Select the CDM-740 product hyperlink;

7. Select the appropriate firmware hyperlink.

About Firmware Numbers, File Versions, and Formats: The flashable files on the download server are organized by product prefix; firmware number (verify that the correct firmware number is known – see Step 1); revision letter, if applicable; and release version.

The downloadable for the CDM-740 base modem bulk firmware is named F0000279x_V###, where “x” denotes the revision letter, and “###” the firmware version. The downloadable files are stored in two 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.

The current version firmware release is provided. If applicable, one version prior to the current release is also available. Be sure to identify and download the desired version.

For additional help with "zipped" file types, refer to PKZIP for Windows, WinZip, or ZipCentral help files. PKZIP for DOS is not supported due to file naming conventions.

4. Extract the files into the temporary folder on the PC. At least two files should be extracted (where the “x” in each filename represents the firmware revision letter):

• FW-0000279x.pkg, the bulk image file;

• ReleaseNotes_FW-0000279x.pdf, the firmware release notes document.

o

o

o

o

9. Transfer the files: Type "put FW-0000279*.pkg" to begin the file transfers. It will take a few seconds to transfer the file.

Errata Page 3 of 4


II. Chapter 5. FRONT PANEL OPERATION Replace Sect. 5.4.2.5 (CONFIG:) Rx Data (page 5-10)

Instructions: Sect. 5.4.2.5 is replaced in its entirety as follows:

Errata Page 4 of 4


III. Chapter 6. ETHERNET MANAGEMENT Replace Sect. 6.5.3 User Login (page 6-5)

Instructions: Sect. 6.5.3 is replaced in its entirety as follows:

Copyright © 2009 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

CDM-740 Advanced Satellite Modem

Installation and Operation Manual

Part Number MN-CDM740 Revision 0

December 17, 2009

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Table of Contents

TABLE OF CONTENTS .............................................................................................................. III

TABLES ...................................................................................................................................... IX

FIGURES .................................................................................................................................... IX

PREFACE ................................................................................................................................... XI

About this Manual ..................................................................................................................................... xi Reporting Comments or Suggestions Concerning this Manual ............................................................... xi

Conventions and References ..................................................................................................................... xi Metric Conversion ................................................................................................................................... xi Recommended Standard Designations ..................................................................................................... xi Trademarks .............................................................................................................................................. xi

Cautions and Warnings ............................................................................................................................ xii

Electrical Safety and Compliance ............................................................................................................ xii Fuses ....................................................................................................................................................... xii Low Voltage Directive (LVD) ............................................................................................................... xiii Installation.............................................................................................................................................. xiii

Environmental .......................................................................................................................................... xiii

Telecommunications Terminal Equipment Directive ........................................................................... xiv

CE Mark ................................................................................................................................................... xiv

RoHS Compliance .................................................................................................................................... xiv

EMC (Electromagnetic Compatibility) Compliance ............................................................................. xiv

Warranty Policy ........................................................................................................................................ xv Limitations of Warranty .......................................................................................................................... xv Exclusive Remedies ............................................................................................................................... xvi

Customer Support ................................................................................................................................... xvii Online Customer Support ..................................................................................................................... xvii

CHAPTER 1. INTRODUCTION ............................................................................................. 1–1

1.1 Overview ...................................................................................................................................... 1–1

CDM-740 Advanced Satellite Modem Revision 0 Table of Contents MN-CDM740

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1.2 Functional Description ............................................................................................................... 1–2

1.3 Features ........................................................................................................................................ 1–4 1.3.1 Physical Description ............................................................................................................. 1–4 1.3.2 Compatibility ........................................................................................................................ 1–4 1.3.3 Major Assemblies ................................................................................................................. 1–4 1.3.4 Dimensional Envelope .......................................................................................................... 1–5 1.3.5 Physical Features .................................................................................................................. 1–6

1.3.5.1 Front Panel ........................................................................................................................ 1–6 1.3.6 Rear Panel ............................................................................................................................. 1–7 1.3.7 Data Interfaces ...................................................................................................................... 1–7 1.3.11 Supporting Hardware and Software ...................................................................................... 1–9

1.4 New in this Release ...................................................................................................................... 1–9

1.5 Summary of Specifications ....................................................................................................... 1–10 1.5.1 Transmit / Modulator .......................................................................................................... 1–10 1.5.2 Receive / Demodulator........................................................................................................ 1–11 1.5.3 Data Interfaces .................................................................................................................... 1–12 1.5.4 Data Rate Ranges ................................................................................................................ 1–12 1.5.5 Miscellaneous ..................................................................................................................... 1–13 1.5.6 Approvals ............................................................................................................................ 1–13

CHAPTER 2. INSTALLATION .............................................................................................. 2–1

2.1 Unpacking and Inspection .......................................................................................................... 2–1

2.2 Mounting ...................................................................................................................................... 2–2 2.2.1 Optional Rear-Mounting Support Bracket Installation ......................................................... 2–2

CHAPTER 3. REAR PANEL CONNECTOR PINOUTS ........................................................ 3–1

3.1 Connector Overview ................................................................................................................... 3–1

3.2 IF Connections ............................................................................................................................ 3–3 3.2.1 Rx IF Connectors .................................................................................................................. 3–3 3.2.2 Tx IF Connectors .................................................................................................................. 3–3

3.3 Terrestrial Data Connections ..................................................................................................... 3–3 3.3.1 GE-1 and GE-2 Ethernet Connectors, RJ-45 ........................................................................ 3–3 3.3.2 FE (Fast Ethernet) Connector, RJ-45 .................................................................................... 3–3 3.3.3 ASI IN/OUT 1 & 2 Connectors, BNC (UNUSED) .............................................................. 3–4

3.4 Utility Connections ...................................................................................................................... 3–4 3.4.1 TERM Connector, RJ-12 ...................................................................................................... 3–4 3.4.2 REDUNDANT Connector, DB-9F ....................................................................................... 3–4 3.4.3 Remote Control Interface Connector, DB-9M ...................................................................... 3–5 3.4.4 EXT/INT REF Connector, BNC ........................................................................................... 3–5


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3.5 Power / Ground Connections ..................................................................................................... 3–6 3.5.1 Alternating Current Power Connector .................................................................................. 3–6 3.5.2 Direct Current (DC) Power Connector (Optional) ................................................................ 3–6 3.5.3 Chassis Ground Connector .................................................................................................... 3–6

CHAPTER 4. FLASH UPGRADING ...................................................................................... 4–1

4.1 Flash Updating via Internet ....................................................................................................... 4–1

4.2 Ethernet FTP Upload Procedure ............................................................................................... 4–2

CHAPTER 5. FRONT PANEL OPERATION ......................................................................... 5–1

5.1 Description ................................................................................................................................... 5–1 5.1.1 Front Panel LED Indicators .................................................................................................. 5–2 5.1.2 Front Panel Keypad ............................................................................................................... 5–2 5.1.3 Front Panel Vacuum Fluorescent Display (VFD) ................................................................. 5–3

5.2 Front Panel Menu ....................................................................................................................... 5–3 5.2.1 Opening Screen ..................................................................................................................... 5–3 5.2.2 CDM-740 Front Panel Menu Matrix .................................................................................... 5–4

5.3 SELECT: (Main) Menu .............................................................................................................. 5–5

5.4 SELECT: Configuration ............................................................................................................ 5–6 5.4.1 CONFIG: Tx ......................................................................................................................... 5–6

5.4.1.1 (CONFIG:) Tx IF ......................................................................................................... 5–6 5.4.1.2 (CONFIG:) Tx Freq (Frequency) ................................................................................. 5–7 5.4.1.3 (CONFIG:) Tx Power .................................................................................................. 5–7 5.4.1.4 (CONFIG:) Tx FEC ..................................................................................................... 5–7 5.4.1.5 (CONFIG:) Tx Mod (Modulation) ............................................................................... 5–7 5.4.1.6 (CONFIG:) Tx Data ..................................................................................................... 5–8 5.4.1.7 (CONFIG:) Tx Scrambler ............................................................................................ 5–8

5.4.2 CONFIG: Rx ......................................................................................................................... 5–9 5.4.2.1 (CONFIG:) Rx IF ......................................................................................................... 5–9 5.4.2.2 (CONFIG:) Rx Freq (Frequency) .................................................................................. 5–9 5.4.2.3 (CONFIG:) Rx FEC ..................................................................................................... 5–9 5.4.2.4 (CONFIG:) Rx Demod (Demodulation) .................................................................... 5–10 5.4.2.5 (CONFIG:) Rx Data ................................................................................................... 5–10 5.4.2.6 (CONFIG:) Rx Descram(bler) (DVB-S2 only) .......................................................... 5–11 5.4.2.7 (CONFIG:) Rx Pilot (DVB-S2 only) ......................................................................... 5–11

5.4.3 CONFIG: Clocks ................................................................................................................ 5–14 5.4.3.1 (CONFIG:) Clocks Ext-Ref ....................................................................................... 5–14 5.4.3.2 (CONFIG:) Clocks Int-Ref-Adj ................................................................................. 5–14

5.4.4 CONFIG: Remote ............................................................................................................... 5–15 5.4.4.1 (CONFIG:) Remote Serial ......................................................................................... 5–15

5.4.5 CONFIG: IP ........................................................................................................................ 5–15 5.4.5.1 (CONFIG:) IP (GE1 / GE2 / MGMT) ........................................................................ 5–16 5.4.5.2 (CONFIG:) IP (SNMP) Read-Cmty ........................................................................... 5–17


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5.4.5.3 (CONFIG:) IP (SNMP) Write-Cmty .......................................................................... 5–18 5.4.5.4 (CONFIG:) IP SNMP Trap ................................................................................... 5–18

5.4.6 CONFIG: Misc .................................................................................................................... 5–18

5.5 SELECT: Test ........................................................................................................................... 5–19 5.5.1 TEST: Mode ........................................................................................................................ 5–19 5.5.2 TEST: BERT ....................................................................................................................... 5–19

5.5.2.1 TEST: Pattern .................................................................................................................. 5–19

5.6 SELECT: Monitor .................................................................................................................... 5–20 5.6.1 Monitor: Live-Alarms ......................................................................................................... 5–20 5.6.2 Monitor: Stored-Events ....................................................................................................... 5–21

5.6.2.1 (Monitor:) Stored-Events Clear-All ........................................................................... 5–21 5.6.2.2 (Monitor:) Stored-Events View .................................................................................. 5–21

5.6.3 Monitor: Rx-Params ............................................................................................................ 5–21 5.6.4 Monitor: IP-Stats ................................................................................................................. 5–22

5.7 SELECT: Store/Ld ................................................................................................................... 5–23

5.8 SELECT: Utility ........................................................................................................................ 5–24 5.8.1 Utilities: Set-RTC ............................................................................................................... 5–24 5.8.2 Utilities: Display-Brightness ............................................................................................... 5–24 5.8.3 Utilities: 1:1 ........................................................................................................................ 5–24 5.8.4 Utilities: 1:N (UNUSED) .................................................................................................... 5–25 5.8.5 Utilities: Circuit-ID ............................................................................................................. 5–25 5.8.6 Utilities: Firmware .............................................................................................................. 5–26

5.8.6.1 (Utilities): Firmware Info ........................................................................................... 5–26 5.8.6.2 (Utilities): Firmware Select ........................................................................................ 5–26

5.9 SELECT: ODU .......................................................................................................................... 5–27 5.9.1 ODU: (BUC:) BUC_LO ..................................................................................................... 5–27

5.9.1.1 ODU: (BUC:) Power ....................................................................................................... 5–28 5.9.1.2 ODU: (BUC:) 10M-Ref .................................................................................................. 5–28 5.9.1.3 ODU: (BUC) Alarm ........................................................................................................ 5–28 5.9.1.4 ODU: (BUC) Monitor ..................................................................................................... 5–28 5.9.1.5 ODU: (LNB) LNB_LO ................................................................................................... 5–28 5.9.1.6 ODU: (LNB) 22K-Tone .................................................................................................. 5–29 5.9.1.7 ODU: (LNB) Polarity ...................................................................................................... 5–29

5.10 SELECT: FAST ........................................................................................................................ 5–30 5.10.1 FAST: Options .................................................................................................................... 5–30 5.10.2 FAST: Configure ................................................................................................................ 5–30

5.10.2.1 FAST: Configure Word# ........................................................................................ 5–31 5.10.3 FAST: Demo-Mode ............................................................................................................ 5–31

CHAPTER 6. ETHERNET MANAGEMENT .......................................................................... 6–1

6.1 Introduction ................................................................................................................................. 6–1

6.2 Ethernet Management Interface Protocols ............................................................................... 6–1


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6.3 SNMP Interface ........................................................................................................................... 6–1 6.3.1 Management Information Base (MIB) Files ......................................................................... 6–2 6.3.2 SNMP Community Strings ................................................................................................... 6–2

6.4 Telnet Interface ........................................................................................................................... 6–3

6.5 Web Server (HTTP) Interface ................................................................................................... 6–4 6.5.1 Web Server Introduction ....................................................................................................... 6–4 6.5.2 Web Server Menu Tree ......................................................................................................... 6–4 6.5.3 User Login ............................................................................................................................ 6–5 6.5.4 Web Server Page Descriptions .............................................................................................. 6–6

6.5.4.1 Home (Splash) Page .......................................................................................................... 6–6 6.5.4.2 Management Pages ........................................................................................................... 6–7

6.5.4.2.1 Management | Main Page ............................................................................................ 6–7 6.5.4.2.2 Management | SNMP Page ......................................................................................... 6–9 6.5.4.2.3 Management | FAST Page ........................................................................................ 6–10 6.5.4.2.4 Management | Firmware Page ................................................................................... 6–11 6.5.4.2.5 Management | Auto Logout Page .............................................................................. 6–12

6.5.4.3 Network Pages ................................................................................................................ 6–13 6.5.4.3.1 Network | FE Mgt Page ............................................................................................. 6–13 6.5.4.3.2 Network | GE-1 and GE-2 Pages .............................................................................. 6–15

6.5.4.4 DEMOD (Demodulator) | Tuner-1 Page ......................................................................... 6–16 6.5.4.5 DECAP (Decapsulator) | Tuner-1 Page .......................................................................... 6–18 6.5.4.6 MOD (Modulator) Page .................................................................................................. 6–20 6.5.4.7 Statistics Pages ................................................................................................................ 6–23

6.5.4.7.1 Statistics | Summary Page ......................................................................................... 6–23 6.5.4.7.2 Statistics | Tuner-1 Page ............................................................................................ 6–24 6.5.4.7.3 Statistics | GE-1 and GE-2 Pages .............................................................................. 6–25 6.5.4.7.4 Statistics | Modulator Page ........................................................................................ 6–26

6.5.4.8 Monitor Page ................................................................................................................... 6–27 6.5.4.9 Utility Page ..................................................................................................................... 6–28

APPENDIX A. REMOTE CONTROL .................................................................................... A–1

A.1 Overview ..................................................................................................................................... A–1

A.2 EIA-232 ....................................................................................................................................... A–1

A.3 Basic Protocol ............................................................................................................................. A–1

A.4 Packet Structure ......................................................................................................................... A–2 A.4.1 Start of Packet ...................................................................................................................... A–2 A.4.2 Target Address ..................................................................................................................... A–2 A.4.3 Address Delimiter ................................................................................................................ A–2 A.4.4 Instruction Code ................................................................................................................... A–2 A.4.5 Instruction Code Qualifier ................................................................................................... A–3 A.4.6 Optional Message Arguments .............................................................................................. A–4 A.4.7 End of Packet ....................................................................................................................... A–4

A.5 Remote Commands and Queries .............................................................................................. A–5


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A.5.1 Tx Parameters ...................................................................................................................... A–6 A.5.2 Rx Parameters ...................................................................................................................... A–9 A.5.3 Unit Parameters .................................................................................................................. A–12 A.5.4 Bulk Configuration Strings ................................................................................................ A–19 A.5.5 Modem Information ........................................................................................................... A–19 A.5.6 Modem Performance Information ...................................................................................... A–21 A.5.7 BUC Parameters (L-Band Device)..................................................................................... A–23

APPENDIX B. FAST ACTIVATION PROCEDURE .............................................................. B–1

B.1 FAST System Overview ............................................................................................................. B–1

B.2 FAST Activation Procedure ...................................................................................................... B–2 B.2.1 Serial Number ...................................................................................................................... B–2 B.2.2 View currently installed features ......................................................................................... B–2 B.2.3 Enter Access Codes .............................................................................................................. B–2

APPENDIX C. 1:1 REDUNDANCY ....................................................................................... C–1

C.1 Overview ..................................................................................................................................... C–1

C.2 Introduction ................................................................................................................................ C–2

C.3 CDM-740 1:1 Redundancy Setup ............................................................................................. C–3 C.3.1 User (IF) CRS-175L CDM-740 User (Data Interface) Cabling ............................ C–3

C.3.1.1 User CRS-175L CDM-740 IF and Control Cabling .............................................. C–4 C.3.1.2 CDM-740 User Data Interface Cabling Connections ................................................. C–5

C.3.2 CDM-740 1:1 Redundancy Operations via the CDM-740................................................... C–6 C.3.2.1 Redundancy Operation via the Front Panel ..................................................................... C–6 C.3.2.2 Redundancy Operation via Telnet Remote Control ......................................................... C–7 C.3.2.3 Redundancy Operation via the Web Server Interface ...................................................... C–8


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Tables Table 3-1. CDM-740 Rear Panel Connectors ........................................................................................... 3–2 Table 3-2. TERM Connector Pin Assignments ....................................................................................... 3–4 Table 3-3. REMOTE Connector Pinouts ................................................................................................. 3–4 Table 3-4. Remote Control Connector Pinouts ........................................................................................ 3–5 Table 5-1. Tx Symbol Rate / Data Rate Ranges – TPC ............................................................................ 5–8 Table 5-2. Rx Symbol Rate / Data Rate Ranges – DVB-S ..................................................................... 5–12 Table 5-3. Rx Symbol Rate / Data Rate Range – DVB-S2 Normal FECFrame = 64,800 Bits .............. 5–12 Table 5-4. Rx Symbol Rate / Data Rate Range – DVB-S2 Short FECFrame = 16,200 Bits .................. 5–13

Figures Figure 1-1. CDM-740 Satellite Modem .................................................................................................... 1–1 Figure 1-2. CDM-740 Network Topology ................................................................................................ 1–2 Figure 1-3. CDM-740 Dimensional Envelope .......................................................................................... 1–5 Figure 1-4. CDM-740 – Front Panel View ............................................................................................... 1–6 Figure 1-5. CDM-740 – Rear Panel View ................................................................................................ 1–7 Figure 2-1. Optional Rear-Mounting Support Bracket Installation .......................................................... 2–3 Figure 3-1. CDM-740 – Rear Panel View ................................................................................................ 3–1 Figure 4-1. Flash Update via Internet ....................................................................................................... 4–1 Figure 5-1. CDM-740 – Front Panel View ............................................................................................... 5–1 Figure 6-1. CDM-740 Advanced Satellite Modem Home (Splash) page ................................................. 6–6 Figure 6-2. Management | Main page ....................................................................................................... 6–7 Figure 6-3. Management | SNMP page ..................................................................................................... 6–9 Figure 6-4. Management | FAST page .................................................................................................... 6–10 Figure 6-5. Management | Firmware page .............................................................................................. 6–11 Figure 6-6. Management | Auto Logout page ......................................................................................... 6–12 Figure 6-7. Network | FE Management page .......................................................................................... 6–13 Figure 6-8. Network | GE-1 and GE-2 pages .......................................................................................... 6–15 Figure 6-9. DEMOD | Tuner-1 page ....................................................................................................... 6–16 Figure 6-10. Decapsulator | Tuner-1 page ............................................................................................... 6–18 Figure 6-11. Modulator page .................................................................................................................. 6–20 Figure 6-12. Statistics | Summary page ................................................................................................... 6–23 Figure 6-13. Statistics | Tuner-1 page ..................................................................................................... 6–24 Figure 6-14. Statistics | GE-1 and GE-2 pages ....................................................................................... 6–25 Figure 6-15. Statistics | Modulator page ................................................................................................. 6–26 Figure 6-16. Monitor page ...................................................................................................................... 6–27 Figure 6-17. Utility page ......................................................................................................................... 6–28 Figure C-1. CRS-175L L-Band 1:1 Redundancy Switch ......................................................................... C–1 Figure C-2. CRS-175L – 1:1 Redundancy (L-Band Simplex or Full Duplex Operation) ....................... C–2 Figure C-3. User CRS-175L CDM-740 IF and Control Cabling Example .................................... C–4 Figure C-4. User CRS-175L CDM-740 IF and Control Cabling Example .................................... C–5 Figure C-5. CDM-740 – Front Panel View .............................................................................................. C–6 Figure C-6. CDM-740 Web Server Interface Utility page ....................................................................... C–8


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PREFACE

About this Manual

This manual provides installation and operation information for the Comtech EF Data CDM-740 Advanced Satellite Modem. This is a technical document intended for earth station engineers, technicians, and operators responsible for the operation and maintenance of the CDM-740.

Reporting Comments or Suggestions Concerning this Manual

Comments and suggestions regarding the content and design of this manual will be appreciated. To submit comments, please contact the Comtech EF Data Technical Publications Department:

[email protected]

Conventions and References

Metric Conversion

Metric conversion information is located on the inside back cover of this manual. This information is provided to assist the operator in cross-referencing non-Metric to Metric conversions.

Recommended Standard Designations

Recommended Standard (RS) Designations have been superseded by the new designation of the Electronic Industries Association (EIA). References to the old designations are shown only when depicting actual text displayed on the screen of the unit (RS-232, RS-485, etc.). All other references in the manual will be shown with the EIA designations.

Trademarks

Product names mentioned in this manual may be trademarks or registered trademarks of their respective companies and are hereby acknowledged.

CDM-740 Advanced Satellite Modem Revision 0 Preface MN-CDM740

xii

IMPORTANT

The user should carefully observe the following information:

Cautions and Warnings

IMPORTANT IMPORTANT or NOTE indicates a statement associated with the task being performed or information critical for proper equipment function.

CAUTION

CAUTION indicates a hazardous situation that, if not avoided, may result in minor or moderate injury. CAUTION may also be used to indicate other unsafe practices or risks of property damage.

WARNING WARNING indicates a potentially hazardous situation that, if not avoided, could result in death or serious injury.

Electrical Safety and Compliance

The CDM-740 has been shown to comply with the EN 60950 Safety of Information Technology Equipment, Including Electrical Business Machines safety standard. The equipment is rated for operation over the range 100-240 volts AC or, appropriately equipped, 36-60 volts DC. It has a maximum power consumption of 300 watts.

Fuses

CAUTION

FOR CONTINUED OPERATOR SAFETY, ALWAYS REPLACE THE FUSES WITH THE CORRECT TYPE AND RATING.

The CDM-740 is fitted with two fuses – one each for line and neutral connections. These fuses are contained within the body of the IEC power inlet connectors, behind a hinged plastic flap.

Observe the following:

• For 230/115 volt AC operation, use T5A 20mm slow-blow fuses.

• For 48 volt DC operation, use a T8A 20mm blow-blow fuses.

Examples of Multi-Hazard Formats


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Low Voltage Directive (LVD)

The following information is applicable for the European Low Voltage Directive (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

Alternating Current

Protective Earth

Fuse Chassis Ground

IMPORTANT

For additional symbols, refer to Cautions and Warnings listed earlier in this Preface.

Installation

The installation and connection to the line supply must be made in compliance to local or national wiring codes and regulations.

The CDM-740 is designed for connection to a power system that has separate ground, line and neutral conductors. The equipment is not designed for connection to power system that has no direct connection to ground.

The CDM-740 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.

Environmental

The CDM-740 must not be operated in an environment where the unit is exposed to extremes of temperature outside the ambient range 0° to 50°C (32° to 122°F); precipitation, condensation, or humid atmospheres above 95% relative humidity; altitudes (un-pressurized) greater than 2000 metres; excessive dust or vibration; flammable gases; or corrosive or explosive atmospheres.

Operation in vehicles or other transportable installations that are equipped to provide a stable environment is permitted. If such vehicles do not provide a stable environment, safety of the equipment to EN60950 may not be guaranteed.


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Telecommunications Terminal Equipment Directive

In accordance with the Telecommunications Terminal Equipment Directive 91/263/EEC, this equipment should not be directly connected to the Public Telecommunications Network.

CE Mark

Comtech EF Data declares that the CDM-740 modem meets the necessary requirements for the CE Mark.

RoHS Compliance

This unit satisfies (with exemptions) the requirements specified in the European Union Directive on the Restriction of Hazardous Substances, Directive 2002/95/EC, (EU RoHS).

EMC (Electromagnetic Compatibility) Compliance

In accordance with European Directive 89/336/EEC, the CDM-740 Modem has been shown, by independent testing, to comply with the following standards:

Emissions: EN 55022 Class B - Limits and methods of measurement of radio interference characteristics of Information Technology Equipment.

(Also tested to FCC Part 15 Class B) Immunity: EN 50082 Part 1 - Generic immunity standard, Part 1: Domestic,

commercial and light industrial environment.

Additionally, the CDM-740 has been shown to comply with the following standards:

EN 61000-3-2 Harmonic Currents Emission EN 61000-3-3 Voltage Fluctuations and Flicker EN 61000-4-2 ESD Immunity EN 61000-4-4 EFT Burst Immunity EN 61000-4-5 Surge Immunity EN 61000-4-6 RF Conducted Immunity EN 61000-4-8 Power frequency Magnetic Field Immunity EN 61000-4-9 Pulse Magnetic Field Immunity EN 61000-4-11 Voltage Dips, Interruptions, and Variations Immunity EN 61000-4-13 Immunity to Harmonics

IMPORTANT

To ensure that the Modem continues to comply with these standards, observe the following instructions:

• Connections to the transmit and receive IF ports (BNC female connectors) should be made using a good quality coaxial cable - for example RG58/U (50Ω or RG59/U (75Ω).


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• All 'D' type connectors attached to the rear panel must have back-shells that provide continuous metallic shielding. Cable with a continuous outer shield (either foil or braid, or both) must be used, and the shield must be bonded to the back-shell.

• The equipment must be operated with its cover on at all times. If it becomes necessary to remove the cover, the user should ensure that the cover is correctly re-fitted before normal operation commences.

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 warranty, whichever is longer. Contact Comtech EF Data for the warranty period specific to the product purchased.

For equipment under warranty, the owner is responsible for freight to Comtech EF Data and all related customs, taxes, tariffs, insurance, etc. Comtech EF Data is responsible for the freight charges only for return of the equipment from the factory to the owner. Comtech EF Data will return the equipment by the same method (i.e., Air, Express, Surface) as the equipment was sent to Comtech EF Data.

All equipment returned for warranty repair must have a valid RMA number issued prior to return and be marked clearly on the return packaging. Comtech EF Data strongly recommends all equipment be returned in its original packaging.

Comtech EF Data Corporation’s obligations under this warranty are limited to repair or replacement of failed parts, and the return shipment to the buyer of the repaired or replaced parts.

Limitations of Warranty

The warranty does not apply to any part of a product that has been installed, altered, repaired, or misused in any way that, in the opinion of Comtech EF Data Corporation, would affect the reliability or detracts from the performance of any part of the product, or is damaged as the result of use in a way or with equipment that had not been previously approved by Comtech EF Data Corporation.

The warranty does not apply to any product or parts thereof where the serial number or the serial number of any of its parts has been altered, defaced, or removed.

The warranty does not cover damage or loss incurred in transportation of the product.

The warranty does not cover replacement or repair necessitated by loss or damage from any cause beyond the control of Comtech EF Data Corporation, such as lightning or other natural and weather related events or wartime environments.


xvi

The warranty does not cover any labor involved in the removal and or reinstallation of warranted equipment or parts on site, or any labor required to diagnose the necessity for repair or replacement.

The warranty excludes any responsibility by Comtech EF Data Corporation for incidental or consequential damages arising from the use of the equipment or products, or for any inability to use them either separate from or in combination with any other equipment or products.

A fixed charge established for each product will be imposed for all equipment returned for warranty repair where Comtech EF Data Corporation cannot identify the cause of the reported failure.

Exclusive Remedies

Comtech EF Data Corporation’s warranty, 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.


xvii

Customer Support

Contact the Comtech EF Data Customer Support Department for:

• Product support or training • Reporting comments or suggestions concerning manuals • Information on upgrading or returning a product

A Customer Support representative may be reached at: Comtech EF Data Attention: Customer Support Department 2114 West 7th Street Tempe, Arizona 85281 USA 480.333.2200 (Main Comtech EF Data number) 480.333.4357 (Customer Support Desk) 480.333.2161 FAX

To return a Comtech EF Data product (in-warranty and out-of-warranty) for repair or replacement: • Contact the Comtech EF Data Customer Support Department. Be prepared to supply

the Customer Support representative with the model number, serial number, and a description of the problem.

• Request a Return Material Authorization (RMA) number from the Comtech EF Data Customer Support representative.

• Pack the product in its original shipping carton/packaging to ensure that the product is not damaged during shipping.

• Ship the product back to Comtech EF Data. (Shipping charges should be prepaid.)

Online Customer Support

An RMA number request can be requested electronically by contacting the Customer Support Department through the online support page at www.comtechefdata.com/support.asp:

• Click on the “Service” hyperlink, then read the “Return Material Authorization” section for detailed instructions on our return procedures.

• Click on the “RMA Request Form” hyperlink, then fill out the form completely before sending.

• Send e-mail to the Customer Support Department at [email protected].

Refer to p. xv in this Preface for information regarding this product’s Warranty Policy.


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Notes:

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Chapter 1. INTRODUCTION

1.1 Overview

The CDM-740 Advanced Satellite Modem (Figure 1-1) is Comtech EF Data’s point-to-multipoint IP satellite modem that provides integrated DVB-S/S2 CCM and VCM demodulation with low latency Turbo Product Coding (TPC) return modulation technology. The CDM-740 was developed as the “spoke” or remote site equipment in hub and spoke network topologies that require high quality, ‘always-on’ availability.

Featuring dual Gigabit Ethernet interfaces and industry-leading packet per second (pps) processing and throughput, the CDM-740 offers the ideal platform for Internet Service Providers (ISPs), Satellite Service Providers, Enterprise Networks, Offshore, and Broadcasters for a wide range of applications – point-to multipoint IP networks, rapid ISP market penetration, high speed communications, high speed content delivery (digital signage and cinema), and IPTV / business television.

Figure 1-1. CDM-740 Satellite Modem

The CDM-740’s high-performance architecture allows efficient IP networking and transport over satellite links while supporting a wide range of applications and network topologies. Key operational features include:

• Transmit data rate: TPC 16 kbps to 9.98 Mbps • Receive data rate: DVB-S/S2 up to 167 Mbps • Transmit IF: 950 to 2150 MHz or 50 to 180 MHz • Receive IF: 950 to 2150 MHz • Data Interfaces: 2X 10/100/1000 BaseT Ethernet • Management: 10/100 BaseT Ethernet with web and SNMP, EIA-232 with CLI • Modulation types: TPC QPSK, 8-QAM, 16-QAM • Demodulation: DVBS – QPSK; DVB-S2 – LDPC+BCH QPSK, 8-PSK, 16-APSK • Firmware – Flash Upgrading

CDM-740 Advanced Satellite Modem Revision 0 Introduction MN-CDM740

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• 1:1 redundancy switch compatibility • The CDM-740 front panel features a Video Fluorescent Display (VFD) and keypad for

local configuration and control; additionally, the unit may be remote-controlled. • The CDM-740 is compact – 1RU high X 18.14” deep – and consumes 80 watts

(maximum, without BUC supply) or 300 watts (maximum, with BUC supply). • Multiple configurations available, including receive-only and duplex.

1.2 Functional Description

Figure 1-2. CDM-740 Network Topology

Figure 1-2 illustrates the CDM-740 Advanced Satellite Modem as deployed in a typical satellite-based communications network. The CDM-740 utilizes a high performance processor and a real-time operating system (RTOS) combined with multiple Field Programmable Gate Arrays (FPGAs) for optimal performance. All non-volatile memory is provided by both onboard and Compact Flash devices. Field upgrades are easily loaded via the Ethernet port; software-based options are added to the unit via FAST (Fully Accessible System Topology) upgrade. The CDM-740 runs on an embedded operating system and does not have moving parts for media storage. This design provides carrier class reliability and high speed, purpose-driven processing. The unit can be managed through multiple interfaces providing options for both in-band and out-of-band monitor and control:

• SNMP MIB II and Private MIB, HTTP Web-based Management • Telnet (CLI), Terminal Port (CLI) • Serial 232/485 and Front Panel control


1–3

The platform includes support for constant coding and modulation (CCM) and variable coding and modulation (VCM) operation. VCM allows operators to define groups of remotes that can have different modulation and coding parameters to improve efficiency on existing satellite capacity.

The CDM-740 supports reception and transmission of IP data over satellite links via 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, which connects with the customer’s equipment (assumed to be the DTE) and the modem (assumed to be the DCE). All terrestrial data is connected using up to two (2) available 10/100/100 BaseT Ethernet interfaces.

On the transmit side: The return modulator transmits IP datagrams and is compatible with the Comtech EF Data’s CDM-570/L modems and CDD-562L/564/564L demodulators located at a hub site.

Transmit data is received by the terrestrial interface where line receivers convert the data signals to CMOS levels for further processing. A small FIFO follows the terrestrial interface to facilitate the various framing options.

In the FEC encoder, the data is differentially encoded, scrambled, and then TPC-encoded. Following the encoder, the data is fed to the transmit digital filters, which perform spectral shaping on the data signals. The resultant I and Q signals are then fed to the QPSK, 8-QAM, or 16-QAM modulator. The carrier is generated by a frequency synthesizer, and the I and Q signals directly modulate this carrier to produce an IF output signal.

Turbo Product Codec (TPC) Return Modulator Hardware Option: The CDM-740 has an optional return modulator providing a very low latency SCPC return link with data rates from 16Kbps to 9.98Mbps. Available modulations are QPSK, 8-PSK and 16-QAM with FEC rates of 21/44, 3/4, 7/8 and 0.95 providing numerous options to balance power and bandwidth on duplex circuits.

On the receive side: The DVB-S / DVB-S2 demodulator supports MPE/IP Decapsulation (ETSI EN 301 192 Multi-Protocol Encapsulation) and Program Identifier (PID) filtering for up to 256 unique PIDs.

DVB-S and DVB-S2 Receiver: The CDM-740’s demodulator supports DVB-S QPSK up to 45Msps, DVB-S2 QPSK, 8-PSK and 16-APSK demodulation up to 62 Msps with receive data rates up to 167 Mbps depending on the modulation type and code rate. In DVB-S2 operation, the receiver operates in the CCM and VCM modes. The receiver automatically detects for pilots ON/OFF and supports spectral rolloff of 20%, 25% or 35%.


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1.3 Features

1.3.1 Physical Description

The CDM-740 Advanced Satellite Modem is constructed as a 1RU-high rack-mounting chassis, which can be free-standing if desired. Rack handles at the front to facilitate removal from and placement into a rack.

The CDM-740 is comprised of two printed circuit board assemblies. All operational upgrades and enhancements are afforded via remote firmware upgrade.

1.3.2 Compatibility

The CDM-740 Satellite modem transmits industry standard TPC interoperable with Comtech EF Data’s CDM-570/L, CDM-562L, and CDM-564/L modems up to 9.98 Mbps. The receive side supports DVB-S/S2 operation at L-Band up to 62 Msps, and is compatible with Comtech EF Data’s CDM-710 Broadcast Satellite Modulator for CCM operation, or Comtech EF Data’s Radyne DM240XR Digital Video Broadcast Modulator for CCM and VCM operation.

1.3.3 Major Assemblies

Assembly Description PL-0000591 Chassis - AC

PL-0000492 PCB Main Board and Modem Card

PL-0000344 Turbo Product Code Card


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1.3.4 Dimensional Envelope

Figure 1-3. CDM-740 Dimensional Envelope


1–6

1.3.5 Physical Features

1.3.5.1 Front Panel

Figure 1-4. CDM-740 – Front Panel View

Figure 1-4 shows the front panel of the modem. The CDM-740 front panel features (from left): eight LED indicators; a keypad; and a Vacuum Fluorescent Display (VFD):

• The LEDs indicate, in a summary fashion, the status of the unit.

• The user enters data via the keypad, which is comprised of six individual keyswitches featuring a positive ‘click’ action (providing tactile feedback).

• Messages and command prompts are displayed on the VFD.

The function and behavior of the LED indicators, keypad, and VFD is described in detail in Chapter 5. FRONT PANEL OPERATION.

LED Indicators Keypad

Vacuum Fluorescent Display (VFD)


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1.3.6 Rear Panel

Figure 1-5. CDM-740 – Rear Panel View

Figure 1-5 shows the rear panel of the modem. External cables are attached to connectors on the rear panel of the CDM-740. For a detailed descriptions/pinouts of each connector, see Chapter 3. REAR PANEL CONNECTOR PINOUTS.

Ref Des Connector Type Description

L-BAND OUT Type ‘N’ L-Band Transmit Output REDUNDANT DB-9F 1:1 Redundancy Interface

REMOTE DB-9M Remote (Tx, Rx traffic alarms and unit faults) IF OUT BNC IF Transmit Output

L-BAND MON Type ‘F’ L-Band Monitor Output TERM RJ-12 Terminal (EIA-232) Interface

GE-1, GE-2 RJ-45 (2X) (2) 10/100/1000 BaseT Ethernet interfaces (IEEE 802.3ab) FE RJ-45 10/100 BaseT Ethernet interface (IEEE 802.3u)

ASI IN 1

BNC (4X) (2) ASI TX Outputs & (2) ASI RX Inputs

(Presently unavailable/unused) ASI OUT 1 ASI IN 2

ASI OUT 2 L-BAND IN 1

Type ‘F’ (2X) L-Band Input 1

L-BAND IN 2 Presently unavailable/unusedEXT/INT REF BNC Reference: External Input / Internal Output

Note: 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.

1.3.7 Data Interfaces

The CDM-740 offers the following data interfaces: • (2) 10/100/1000 BaseT Gigabit Ethernet Interfaces (GE1, GE2); • A 10/100 BaseT Gigabit Ethernet Interface for management purposes (Web, SNMP, and

CLI [Command Line Interface]); • A EIA-232/485 interface for serial modem remote control.

1.3.8 Verification

The CDM-740 includes three test modes for rapid verification of the correct function of the unit. When normal operation is again selected, all of the previous values are restored.


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1.3.9 Flash Upgrading Modem Firmware

The internal firmware is both powerful and flexible, permitting storage and retrieval of up to 10 different modem configurations. The modem uses ‘flash memory’ technology internally, and new firmware can be uploaded to the unit from an external PC. This simplifies software upgrading, and updates are deliverable via the Internet (from Comtech EF Data’s Web server), e-mail, or on CD. The upgrade can be performed without opening the unit, by simply connecting the CDM-740 to the Ethernet port of a computer.

See Chapter 4. FLASH UPGRADING for further information.

1.3.10 Fully Accessible System Topology (FAST)

The CDM-740 is extremely flexible and powerful, and incorporates a large number of optional features. In order to permit a lower initial cost, the modem may be purchased with only the desired features enabled. If, at a later date, a user wishes to upgrade the functionality of a modem, Comtech EF Data provides Fully Accessible System Topology (FAST), which permits the purchase and installation of options through special authorization codes loaded into the unit either via the front panel keypad or entered remotely via the remote port located on the modem rear panel. These unique access codes may be purchased at any time from Comtech EF Data.

FAST System Theory FAST facilitates on-location upgrade of the operating feature set without removing a modem from the setup. With FAST technology, operators have maximum flexibility for enabling functions as they are required. FAST allows an operator to order a modem precisely tailored for the initial application. When service requirements change, the operator can upgrade the topology of the modem to meet those requirements within minutes. This accelerated upgrade can be accomplished because of FAST’s extensive use of the programmable logic devices incorporated into Comtech EF Data products.

FAST Implementation Comtech EF Data’s FAST system is factory-implemented in the modem. All FAST options are available through the basic platform unit at the time of order – FAST allows immediate activation of available options, after confirmation by Comtech EF Data, through the front panel keypad or via the remote control interface.

See Appendix C. FAST ACTIVATION PROCEDURE for further information.

FAST Accessible Options Hardware options for basic modems can be ordered and installed either at the factory or in the field. The operator can select options that can be activated easily in the field, depending on the current hardware configuration of the modem. A unique access code enables configuration of the available hardware.


1–9

The following table shows the available FAST and FAST-accessible hardware options:

Option Option Installation Method Tx TPC Data Rate FAST Rx Symbol Rate FAST Rx DVB-S2 16APSK and 32APSK FAST Tx 70/140 MHz FAST Tx L-Band FAST TPC Modulator Hardware 24 VDC BUC PS Hardware 48 VDC BUC PS Hardware

1.3.11 Supporting Hardware and Software

1:1 Redundancy Applications The CDM-740 supports 1:1 redundancy applications via use of the optional Comtech EF Data CRS-175L L-Band 1:1 Redundancy Switch. For further information, refer to Appendix C. 1:1 REDUNDANCY in this manual, and the CRS-175L L-Band 1:1 Redundancy Switch Installation and Operation Manual (Comtech EF Data Document Number MN-CRS175).

1.4 New in this Release

Version 1.1.1 represents the initial product release.


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1.5 Summary of Specifications

1.5.1 Transmit / Modulator

Modulation QPSK, 8-QAM and 16-QAM

Symbol Rate Range 4.8 ksps to 3.00 Msps, programmable in 1 sps steps

Data Rate Range 16 kbps to 9.980 Mbps, programmable in 1 bps steps

Operating Frequency Range

70/140 MHz 50 to 180 MHz IF, 100 Hz frequency resolution

L-Band 950 to 2150 MHz L-Band, 100 Hz frequency resolution

Frequency Stability

70/140 MHz ±0.06 ppm, 0º to 50ºC (32º to 122ºF)

L-Band ±0.06 ppm, 0º to 50ºC (32º to 122ºF)

Output Power 70/140 MHz -5 to -25 dBm, 0.1 dB steps

L-Band -5 to -40 dBm, 0.1 dB steps

Power Accuracy 70/140 MHz ± 1.0 dB over frequency and temperature

L-Band ± 1.0 dB at 25 C over frequency and temperature

Tx Monitor Port

Selectable On/Off Output is L-Band.

Monitor 70/140 900 MHz + IF carrier frequency

Monitor L-Band Same as L-Band frequency

Level -45 dBm typical

Mute Mutes when Tx carrier is muted

Phase Noise 70/140 MHz < 1 degree RMS double-sided, 100 Hz to 1 MHz

L-Band < 1 degrees RMS double-sided,100 Hz to 1 MHz

FEC Turbo Product Codec (TPC): 6 bit soft decision, proprietary Operating Modes TPC:

• Rate 21/44 QPSK • Rate 3/4 QPSK • Rate 7/8 QPSK • Rate 0.95 QPSK • Rate 3/4 8-QAM • Rate 7/8 8-QAM • Rate 0.95 8-QAM • Rate 3/4 16-QAM • Rate 7/8 16-QAM

Note: Refer to Table 5-1 for additional data rate/symbol rate information.

Transmit Filtering IESS-308/-309 spectral mask

Scrambling Comtech, IESS-315 per ITU V.35 (Intelsat variant), disabled

External Reference In/Out See Sect. 1.5.3 Data Interfaces

Harmonics and Spurious < -60 dBc/4 kHz over operating frequency range (Typically < -65 dBc/4 kHz)

BUC Reference (10 MHz) Via Tx IF center conductor, 10 MHz per reference, selectable ON/OFF, 0 dBm ±3 dB


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1.5.2 Receive / Demodulator

L-Band Input 950 to 2150 MHz, Type F female

L-Band Input Power Range -25 to -55 dBm

Data Decapsulation MPE/IP (ETSI EN 301 192 Multi-Protocol Encapsulation)

FEC LDPC+BCH: 5 bit soft decision, proprietary Operating Modes DVB-S (ETSI EN 300 421):

• Rate QPSK 1/2

• Rate QPSK 2/3

• Rate QPSK 3/4

• Rate QPSK 5/6

• Rate QPSK 7/8

DVB-S2 (ETSI EN 302 307):

• Rate QPSK 1/4 • Rate 8-PSK 9/10

• Rate QPSK 1/3 • Rate 16-APSK 3/5








• Rate 8-PSK 3/5 • Rate 32-APSK 3/4




• Rate 8-PSK 8/9 Note: Refer to Table 5-2 through Table 5-4 for additional data rate/symbol rate information.

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, 18 volts per DiSEq 4.2 and 24VDC at 500 mA maximum.

LNB Current Alarm Programmable MIN and MAX current alarms.


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1.5.3 Data Interfaces

IF Transmit Output 1 70/140 MHz Transmit Output port BNC (female)

L-Band Transmit Output 1 L-Band Transmit Output port Type ‘N’ (female)

L-Band Input 1 L-Band Input port Type ‘F’ (female)

L-Band Monitor Output 1 L-Band Monitor Output port Type ‘F’ (female)

External Reference In/out

As an input: 1, 2, 5 or 10MHz -6dBm to +10dBm (nominal 50/75 Ω) As an output: 10MHz, 2.7 volts peak-to-peak +/- 0.4 volts, low impedance output

BNC (female)

Remote Control EIA-232 terminal interface for modem remote control and monitoring 9-pin D-sub (male)

1:1 Control Control interface for CRS-175L 1:1 Redundancy unit; Tx, Rx traffic alarms and Unit faults

9-pin D-sub (male)

Ethernet Management 1 port of 10/100 BaseT auto-sensing full/half duplex Ethernet RJ-45

Ethernet 2 ports of 10/100/1000 BaseT auto-sensing full/half duplex Ethernet RJ-45

1.5.4 Data Rate Ranges

Refer to Table 5-1 through Table 5-4 for data rate/symbol rate information.


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1.5.5 Miscellaneous

Front Panel • 8 LED Indicators:

Unit Status (Red/Green) Transmitter On (Green) Tx Status (Green) Online (Green)

Stored Event (Amber) Rx-1 Traffic (Green) Rx-2 Traffic (Green) Test Mode (Amber)

• Tactile keypad – 6 keys (Up, Down, Left, Right, Enter, Clear) • Vacuum Fluorescent Display (blue) – 2 lines of 40 characters

Dimensions 1.75” (44 mm) [1RU] high x 19” (480 mm) wide x 18.41 inches (467.61 mm) deep (all dimensions approximate)

Weight 12 lbs (5.45 kgs) max (48V BUC supply installed)

M&C Interface EIA-232 or Ethernet (10/100 BaseT)

M&C Software Serial comms, SNMP, Telnet, Web Server (http) Monitor Functions • Live Alarms: Unit, Tx, Rx

• Stored Events: Up to 255 events (View/Clear) • Rx Parameters:

o Es/No estimate: 2 to 10 dB with ± 0.3 dB accuracy 0 to 16 dB with ± 0.5 dB accuracy

o Corrected Bit Error Rate: 1E-3 to 1E-10 • IP Operating Statistics: Mod/Demod, GE1, GE2 (View/Clear)

Firmware update Via Ethernet port, FTP protocol

AC consumption 50 watts (typical) / 80 watts (maximum), no BUC 270 watts (24 volt BUC supply installed) / 300 watts (maximum) 270 watts (48 volt BUC supply installed) / 300 watts (maximum)

AC operating voltage 100 - 240 volts AC, 47Hz-63Hz IEC 320 input (total absolute max. range is 90 - 254 volts AC)

DC consumption (optional) As above (AC consumption)

DC operating voltage 48 volts nominal (total range is 36 - 60 volts)

Operating temperature 0º to 50ºC (32º to 122ºF)

Storage temperature –20° to 70°C (–4º to 158ºF)

Humidity 95% maximum, non-condensing

1.5.6 Approvals “CE” as follows:

EN 55022 Class B (Emissions) EN 50082-1 (Immunity) EN 60950 (Safety)

EN 61000-3-2 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

FCC

FCC Part 15 Class B


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Notes:

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Chapter 2. INSTALLATION

2.1 Unpacking and Inspection

Inspect shipping containers for damage. If shipping containers are damaged, keep them until the contents of the shipment have been carefully inspected and checked for normal operation.

The CDM-740 Advanced Satellite Modem and its Installation and Operation Manual are packaged and shipped in a pre-formed, reusable cardboard carton containing foam spacing for maximum shipping protection.

CAUTION

Do not use any cutting tool that will extend more than 1 inch into the container. This can cause damage to the modem.

Unpack and inspect the modem as follows:

Step Procedure

1 Cut the tape at the top of the carton indicated by OPEN THIS END.

2 Remove the cardboard/foam space covering the modem.

3 Remove the modem, manual and power cord from the carton.

4 Save the packing materal for storage or reshipment puposes.

5 Inspect the equipment for any possible damage incurred during shipment. Note: If damage is evident, contact the carrier and Comtech EF Data immediately and submit a damage report.

6 Check the contents against the packing list to verify completeness of the shipment.

7 Refer to the following sections for further installation instructions.

CDM-740 Advanced Satellite Modem Revision 0 Installation MN-CDM740

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2.2 Mounting

If the CDM-740 is to be mounted in a rack, ensure that there is adequate clearance for ventilation, particularly at the sides. In rack systems where there is high heat dissipation, forced air cooling must be provided by top or bottom mounted fans or blowers. Under no circumstance should the highest internal rack temperature be allowed to exceed 50°C (122°F).

IMPORTANT

The CDM-740 CANNOT have rack slides mounted to the side of the chassis. Three cooling fans are mounted in the left-hand side of the unit. Comtech EF Data recommends that an alternate method of support within the rack be employed, such as rack shelves or the optional rear support brackets. If there is any doubt, please consult the Comtech EF Data Customer Support department.

2.2.1 Optional Rear-Mounting Support Bracket Installation

Install optional rear-mounting support brackets using mounting kit KT/6228-2:

Quantity Part Number Description

2 HW/10-32SHLDR Screw, #10 Shoulder

4 HW/10-32FLT Washer, #10 Flat

2 HW/10-32SPLIT Washer, #10 Split

2 HW/10-32HEXNUT Nut, #10 Hex

2 FP/6138-1 Bracket, Rear Support

4 HW/10-32x1/2RK Bolt, #10 Rack Bracket

The tools required for this installation are a medium Phillips™ screwdriver and a 5/32-inch SAE Allen™ Wrench. The kit is installed as illustrated in Figure 2-1 via the following procedure:

Step Procedure

1 Secure the #10 shoulder screws to the unit chassis through the rear right and left side mounting slots, using the #10 flat washers, #10 split washers, and #10 hex nuts as shown.

2 Install the rear support brackets onto the equipment rack threaded rear mounting rails, using the #10 rack bracket bolts.

3 Mount the unit into the equipment rack, ensuring that the shoulders of the #10 shoulder screws properly engage into the rear support bracket slots.


2–3

Equipment Rack Rear Mounting Rail

#10 Shoulder Screw

#10 Bracket Bolt

Support Bracket

Back of unit

#10 Split Washer

#10 Flat Washer

#10 Flat Washer

#10 Hex Nut

Figure 2-1. Optional Rear-Mounting Support Bracket Installation


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Notes:

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Chapter 3. REAR PANEL CONNECTOR PINOUTS

3.1 Connector Overview

The rear panel connectors for the CDM-740 Advanced Satellite Modem, shown here in Figure 3-1, provide all necessary external connections between the modem and other equipment. Table 3-1 on the next page summarizes the connectors provided on the rear panel interface, grouped according to service function.

Figure 3-1. CDM-740 – Rear Panel View

CDM-740 Advanced Satellite Modem Revision 0 Rear Panel Connector Pinouts MN-CDM740

3–2

Table 3-1. CDM-740 Rear Panel Connectors

Connector Group Name (Ref Des) Connector Type Function

IF Sect. 3.2

L-BAND IN 1 Type ’F’ female (L-Band)

IF Rx Input L-BAND IN 2 (UNUSED) UNUSED L-BAND OUT Type ’N’ female (L-Band)

IF Tx Output IF OUT BNC female (70/140 MHz)

Terrestrial Data Sect. 3.3

GE1 RJ-45 Female 10/100/1000 BaseT Ethernet

Traffic Interface GE2

FE (Fast Ethernet) RJ-45 female 10/100 BaseT management and data

ASI (UNUSED)

ASI IN 1

BNC female UNUSED ASI OUT 1

ASI IN 2

ASI OUT 2 Utility Sect. 3.4

TERM RJ-12 Female Terminal (EIA-232) Interface

REDUNDANT 9-pin Type ‘D’ female Connection to External 1:1 Controller

REMOTE 9-pin Type ‘D’ male Serial Remote Interface (EIA-232/485)

L-BAND MON Type ‘F’ female L-Band Monitor Output

EXT/INT REF BNC female 10 MHz External/Internal Reference Input/Output

Power/Ground Sect 3.5

AC See Sect. 3.5.1 Chassis power

DC See Sect. 3.5.2 Chassis power (optional)

Ground #10-32 stud Common Chassis Ground


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3.2 IF Connections

There may be DC voltages present on the Type ‘N’ Rx and Tx IF connectors, up to a maximum of 48 volts.

3.2.1 Rx IF Connectors

Ref Des Connector Type Description Direction

L-BAND IN 1 Type ‘F’ Rx IF signal, L- Band In

L-BAND IN 2 Type ‘N’ (UNUSED) (UNUSED)

3.2.2 Tx IF Connectors

3.3 Terrestrial Data Connections

3.3.1 GE-1 and GE-2 Ethernet Connectors, RJ-45

These are two standard RJ-45 female modular jacks, operating at 10/100/1000 Mbps, half and full duplex, auto-negotiating.

Note: The maximum Ethernet packet size is 1522 bytes (including Ethernet headers and CRC).

3.3.2 FE (Fast Ethernet) Connector, RJ-45

This is a standard RJ-45 female modular jack, operating at 10/100 Mbps, half and full duplex, auto-negotiating.

Note: The maximum Ethernet packet size is 1522 bytes (including Ethernet headers and CRC).

Ref Des Connector Type Description Direction

L-BAND OUT Type ‘N’ Tx IF signal, L- Band

Out IF OUT BNC Tx IF signal, 70/140 MHz band

L-BAND MON Type ‘F’ L-Band Monitor of 70/140 or L-Band

CA UTIO N


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3.3.3 ASI IN/OUT 1 & 2 Connectors, BNC (UNUSED)

This BNC connector group is unused. All information in this section is provided for reference only.

3.4 Utility Connections

3.4.1 TERM Connector, RJ-12

The TERM Connector is a standard 6-pin RJ-12 female modular jack. It is used for management of CDM-740 and IP functions using a terminal emulator connected (with the supplied adapter cable) to the Console port. This is a EIA-232 DCE interface. Refer to Table 3-2 for the connector pinouts.

Table 3-2. TERM Connector Pin Assignments

Pin # Function

1 Ground 2 Rx 3 Tx 4 Ground 5 Not used 6 Not used

3.4.2 REDUNDANT Connector, DB-9F

The Redundant connector is a 9-pin Type ‘D’ female connector, intended only for connection to a CRS-175L L-Band 1:1 Redundancy Switch. Refer to Table 3-3 for pinouts.

Table 3-3. REMOTE Connector Pinouts Pin # Description Direction

1 Ground 2 Receive Serial Data – auxiliary channel In 3 Redundancy In 1 In 4 Redundancy In 2 In 5 Ground 6 Transmit Serial Data – auxiliary channel Out 7 Redundancy Out 1 Out 8 Redundancy Out 2 Out 9 Fused +12 volt Out


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3.4.3 Remote Control Interface Connector, 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. Refer to Table 3-4 for pinouts.

Table 3-4. Remote Control Connector Pinouts

Pin # Description Direction 1 Ground – 2 EIA-232 Transmit Data Out 3 EIA-232 Receive Data In 4 Reserved - do not connect to this pin – 5 Ground – 6 EIA-485 Receive Data B * In 7 EIA-485 Receive Data A * In 8 EIA-485 Transmit Data B Out 9 EIA-485 Transmit Data A Out

* Use for 2-wire EIA-485 operation

3.4.4 EXT/INT REF Connector, BNC

The Ext/Int Ref connector is a BNC female connector. The signal supplied here by the user is used for phase-locking the internal 10MHz reference oscillator, and can be 1, 2, 5, 10 or 20 MHz. The impedance is matched for 50/75Ω, and requires a level in the range –6 to +10 dBm.

Connector Type Description Direction BNC External Reference In/Out


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3.5 Power / Ground Connections

3.5.1 Alternating Current Power Connector

A standard, detachable, non-locking, 3-prong power cord (IEC plug) supplies the Alternating Current (AC) power to the modem via this connector.

Note the following:

AC Power Specifications

Input Power 40W maximum, 20W typical

Input Voltage 100 - 240 volts AC, +6%/-10% - autosensing (total absolute max. range is 90 - 254 volts AC)

Connector Type IEC

Fuse Protection 5.0A Slow-blow (115 volt AC operation) 2.5A Slow-blow (230 volt AC operation) Line and neutral fusing (2) 20 mm type fuses

3.5.2 Direct Current (DC) Power Connector (Optional)

This optional connector supplies the Direct Current (DC) power to the modem.

Note the following:

DC Power Specifications

Input Power 48 watts (typical) 55 watts (maximum)

Input Voltage 48 volts DC, nominal (36 volts to 60 volts)

Connector Type Corcom PS series

Mating Connector Corcom GA210 or Molex 03-12-1026

Fuse Protection 8A Slow-blow Line and neutral fusing (2) 20 mm type fuses

3.5.3 Chassis Ground Connector

A #10-32 stud adjacent to the power connector is used for connecting a common chassis ground among equipment.

Note: The AC power connector provides the safety ground.

4–1

Chapter 4. FLASH UPGRADING

4.1 Flash Updating via Internet

Because the CDM-740 Satellite Modem uses integrated ‘Flash memory’ technology, the need for updating firmware by physically replacing EPROMs is eliminated. This makes software upgrading very simple, and updates can now be sent via the Internet (Figure 4-1), via E-mail, or on CD.

This chapter outlines the complete upgrading process as follows:

• New firmware can be downloaded via the Internet to an external PC.

• The upgrade can be performed without opening the CDM-740 by simply connecting the unit to the Ethernet port of a computer.

• The firmware update is transferred, via File Transfer Protocol (FTP), to the CDM-740.

Figure 4-1. Flash Update via Internet

CDM-740 Advanced Satellite Modem Revision 0 Flash Upgrading MN-CDM740

4–2

4.2 Ethernet FTP Upload Procedure

1. Identify the reflashable product, firmware number, and version for download. The current base modem M&C version can be viewed at the top level menu of the front

panel display (press the CLEAR key several times to view). The firmware information can also be found within the (Select) Utility: Firmware Info BootRom, Image#1 or Image#2 menu trees.

Using serial remote control, the firmware revision levels can be queried with the following commands:

Abbreviated: <0/SWR? or: Detailed: <0/FRW?x where: x = 0 (Boot), 1 (Image 1) or 2 (Image 2) For more information about remote commands, see Appendix A. REMOTE CONTROL.

Alternately, when using the Web Server Interface, the Bootrom, Image1 and Image2 firmware loads may be viewed after selecting the Firmware Info hyperlink (available under the Status page tab). For more information, refer to Chapter 6.5 Web Server (HTTP) Interface.

2. Create a temporary directory (folder) on an external PC.

Windows: Select File > New > Folder, then rename the New Folder to "temp" or another convenient, unused name. Assuming "temp" works, a "c:\temp" folder should now be created.

Note: The c: is the drive letter used in this example. Any valid writable drive letter can be used.

CMD Prompt: At the command prompt (c:\>), type "mkdir temp” or “MD temp" without quotes (mkdir and MD stand for make directory). This is the same as creating a new folder from Windows. There should now be a "c:\temp" subdirectory created (where c: is the drive letter used in the example).

3. Download the correct firmware file to this temporary folder. As shown in Figure 4-1: 1. Go online to: www.comtechefdata.com 2. Click on: Support tab 3. Click on: Software Downloads drop-down or hyperlink from Support page 4. Click on: Download Flash and Software Update Files icon 5. Click on: (Select a Product Line) Satellite Modems hyperlink 6. Select the CDM-740 product hyperlink 7. Select the appropriate firmware hyperlink.

About Firmware Numbers, File Versions, and Formats: The flashable files on the download server are organized by product prefix; firmware number (verify that the correct firmware number is known – see Step 1); revision letter, if applicable; and release version. The base modem bulk firmware for the CDM-740 is FW-0000279X_V### (where ‘X’ denotes the revision letter, and ‘###’ the firmware version). The current version firmware release is provided. If applicable, one version prior to the current release is also available. Be sure to identify and download the desired version.


4–3

The downloadable files are stored in two 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. For additional help with "zipped" file types, refer to PKZIP for Windows, WinZip, or ZipCentral help files. PKZIP for DOS is not supported due to file naming conventions.

4. Extract the files into the temporary folder on the PC. At least two files should be extracted:

• FW-0000279x.bin, where "x" is the version (bulk image file).

• CDM-740_ReleaseNotes_vXXX.pdf, where “XXX” denotes the firmware version. 5. Confirm that the files have been extracted to the specified temporary folder on the PC. In

DOS, use “cd c:\temp” to change to the temporary directory created in Step 2, then use the “dir” command to list the files extracted from the downloaded archive file.

6. Connect the external PC to any one of the four CDM-740 modem 10/100 Ethernet ports, via a hub or a switch, or directly to a PC with a crossover cable.

7. Send a “ping” command to the modem to verify the connection and communication. First, determine the IP address of the modem remotely or using the front panel:

• Remotely - use the <0/IPA? command

• Front panel - use the SELECT: Config IP GE1 / GE2 / Mgmt Addr/Range menu.

Then, using DOS to PING (and FTP): Click “Start” on the Windows toolbar, then select the “Run...” option. As an alternative, use the “DOS Prompt” or “Command Prompt” icons in the Start Menu:

• Using Win95 or Win98: Type “command”.

• Using WinNT, Win2K or WinXP: Type “cmd”. At the DOS prompt, type “ping xxx.xxx.xxx.xxx” (where "xxx.xxx.xxx.xxx" is the modem IP address). The results should confirm whether or not the modem is connected and communicating.

8. Initiate an FTP session with the modem (the example uses a DOS window): a. From the PC, type "ftp xxx.xxx.xxx.xxx" where "xxx.xxx.xxx.xxx" is the IP address of

the CDM-740. b. Press ENTER at the user prompt. c. Verify the FTP transfer is binary by typing "bin". d. Type "prompt" then type "hash" to facilitate the file transfers.

9. Transfer the files: Type "put FW-0000279*.bin:" to begin the file transfers. It will take a few seconds to transfer the file.

10. Verify the file transfer.

a. The PC should report that the file transfer has occurred, and the display on the modem will report:

... FTP Upgrade In Progress ... ... Please wait ...


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b. The upgrade will take several minutes. When it has finished, the modem front panel will return to its normal display.

c. Terminate the FTP session by typing "bye" and closing the DOS window.

d. Verify that the new file loaded using the procedure in step 1.

e. Change the desired image to boot from the modem font panel menu: SELECT: Utility Firmware Select; use the right or left arrows (◄►) on the front panel keypad to select Latest, #1, or #2, then press ENTER.

f. Verify the new software versions are booting by observing the following messages on the modem display:

Comtech CDM-740 Advanced Satellite Modem TPC installed Ver1.1.1

5–1

Chapter 5. FRONT PANEL OPERATION

5.1 Description

Figure 5-1. CDM-740 – Front Panel View

The user can fully control and monitor the operation of the CDM-740 Advanced Satellite Modem from the front panel using the keypad and display. Nested menus are used, which display all available options, and prompt the user to carry out a required action. Figure 5-1 identifies the key features of the front panel, which are explained in greater detail in this section.



CDM-740 Advanced Satellite Modem Revision 0 Front Panel Operation MN-CDM740

5–2

5.1.1 Front Panel LED Indicators

IMPORTANT

In general, the Alarm relay state will reflect the state of the Front Panel LEDs. For instance, if the Unit Status LED is red, the Unit Alarm relay will be active, etc. The one exception is the Transmit Traffic relay. This will only be activated if a Transmit Traffic Fault exists – it does not reflect the state of the Tx carrier.

The function of the eight front panel LED indicators is as follows: LED Condition

UNIT STATUS Green No Unit Faults, or Traffic Faults Amber No Unit Faults, but a Traffic Fault exists Red A Unit Fault exists (Example: PSU fault)

TRANSMITTER ON Green Transmitter is ON Off Transmitter is OFF. May be forced OFF by a Fault or programmed OFF

Tx TRAFFIC Green No Tx Traffic Faults (data, encoder, synthesizer and modulator all OK) Off A Tx Traffic fault exists

ONLINE Green The Unit is Online, and carrying traffic

Off The Unit is Offline (standby) – forced by externally connected 1:1 redundancy system

STORED EVENT Amber There is a Stored Event in the log, which can be viewed from the front panel, or retrieved

via the remote control interface Off There are no Stored Events

Rx-1 TRAFFIC Green No Rx-1 Traffic Faults (demod-1 and data are all are OK)

Off An Rx-1 Traffic fault exists (the demod may still be OK) Or Rx-1 is inactive and not enabled (programmed OFF)

Rx-2 TRAFFIC (Unused) (Unused)

TEST MODE Amber A Test Mode is selected (Example: TX CW) Off There is no currently selected Test Mode

5.1.2 Front Panel Keypad

IMPORTANT

The keypad has an auto-repeat feature. If a key is held down for more than 1 second, the key action will repeat, automatically, at the rate of 15 keystrokes per second. This is particularly useful when editing numeric fields, with many digits, such as frequency or data rate.

The function of the keypad is as follows:

◄ ► (Left, Right) These arrows are used to move to the next selection or to move the cursor functions. At times, they may also used to move from one section to another.

▲ ▼ (Up, Down) These arrows are used primarily to change configuration data (numbers). At times, they may also be used to move from one section to another.

ENTER This key is used to select a displayed function or to execute a modem configuration change.

CLEAR This key is used to back out of a selection or to cancel a configuration change which has not been executed using [ENTER]. Pressing [CLEAR] generally returns the display to the previous selection.


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5.1.3 Front Panel Vacuum Fluorescent Display (VFD)

The CDM-740 features a Vacuum Fluorescent Display (VFD). The VFD is an active display showing two lines

of 40 characters each. It produces a blue light, the brightness of which can be controlled by the user. Compared to a Liquid Crystal Display (LCD), it has greatly superior viewing characteristics and does not suffer problems of viewing angle or contrast.

On most menu screens, the user will observe a flashing solid block cursor, which blinks at a once-per-second rate. This indicates the currently selected item, digit, or field. Where this solid block cursor would obscure the item being edited (e.g., a numeric field) the cursor will automatically change to an underline cursor.

If the user were to display the same screen for weeks at a time, the display could become ‘burnt’ with this image. To prevent this, the unit has a ‘screen saver’ feature that activates after 1 hour:

CDM740 Ver1.1.1 ...... PRESS ANY KEY ......

The message moves from right to left across the screen, then wraps around. The top line of the display identifies the product (i.e., the CDM-740) with the running firmware version or the Circuit ID (which can be entered by the user).

The bottom line reads ‘...... PRESS ANY KEY ......’.

Pressing any key will restore the previous screen.

5.2 Front Panel Menu

The table on the next page illustrates the hierarchal structure of the front panel menu tree, and provides a quick references for the chapter sections provide detailed explanations about the available front panel menu, menu branch, and submenu selections.

5.2.1 Opening Screen

This ‘welcome’ screen is displayed whenever power is first applied to the unit. The modem model (i.e., the CDM-740), installed options, and the running firmware version are indicated here:

Comtech CDM-740 Advanced Satellite Modem TPC installed Ver1.1.1

Press any key to go to the Select: (Main) menu screen.


5–4

5.2.2 CDM-740 Front Panel Menu Matrix

Sect. Menu / Menu Branch Submenu – Available Selections (See Chapt. Sects for nested info) 5.2.1 Opening Screen N/A 5.3 Select (Main) Menu Configuration Test Monitor Store/Ld Utility ODU FAST 5.4 Configuration Tx Rx Clocks Remote IP Misc 5.4.1 (CONFIG:) Tx Tx-IF Freq Power FEC Mod Data Scrambler* 5.4.2 (CONFIG:) Rx Rx-IF Freq FEC Demod Data Descram* Pilot* 5.4.3 (CONFIG:) Clocks Ext-Ref Int-Ref-Adj 5.4.4 (CONFIG:) Remote Local Serial Ethernet

5.4.5 (CONFIG:) IP (IP): GE1 GE2 Mgmt (SNMP): Read-Cmty Write-Cmty Trap

5.4.6 (CONFIG:) Misc High-Stab Reference Warmup Delay: Enable/Disable 5.5 Test Mode BERT-State BERT-Pattern 5.5.1 (Test:) Mode Normal Tx-CW Tx-1/0 5.5.2 (Test:) BERT-State Off On 5.5.3 (Test:) BERT-Pattern 2E23-1 2047 5.6 Monitor Live-Alarms Stored-Events Rx-Params IP-Stats 5.6.1 (Monitor:) Live-Alarms Unit Tx Rx 5.6.2 (Monitor:) Stored-Events Clear-All View 5.6.3 (Monitor:) Rx-Params EsNo BER RxLevel

5.6.4 (Monitor:) IP-Stats View: Mod/Demod GE1 GE2 Clear: Mod Demod GE1/GE2 All

5.7 Store/Ld (Store/Load Configurations) Configuration #X (0-9): Load Store

5.8 Utility Set-RTC Display-Brightness 1:1 1:N Circuit-ID Firmware

5.8.1 (Utilities:) Set-RTC (Time): (hh/mm/ss) (Date): (dd/mm/yy)

5.8.2 (Utilities:) Display-Brightness 1 .75 .50 .25 5.8.3 (Utilities:) 1:1 (Press ENTER to force switchover to standby unit) 5.8.4 (Utilities:) 1:N (UNUSED) (UNUSED) 5.8.5 (Utilities:) Circuit-ID (Circuit ID – max length 32 chars) 5.8.6 (Utilities:) Firmware Info Select

5.9 ODU (Outdoor Unit) (BUC): BUC_LO Power 10M-Ref Alarm Monitor (LNB): LNB_LO 22K-Tone Polarity

5.9.1 (BUC) BUC_LO (BUC Lockout Frequency) (MHz) (Terminal Mix:) +/- TTF

5.9.2 (BUC) Power (BUC Power Enable): Off/On (Output Power Enable): Off/On

5.9.3 (BUC) 10M-Ref (BUC 10MHz Reference): Off/On

5.9.4 (BUC) Alarm (Alarm Limit Low): (mA) (Alarm Limit High): (mA)

5.9.5 (BUC) Monitor Read-only (BUC Power Monitor) (mA, V)

5.9.6 (LNB) LNB_LO (LNB Lockout Frequency) (MHz) (Terminal Mix) +/- RTF

5.9.7 (LNB) 22K-Tone (Rx LNB 22KHz Tone): Off/On 5.9.8 (LNB) Polarity (Rx Polarity): Off Horizontal Vertical 5.10 FAST Options Configure Demo-Mode 5.10.1 (FAST) Options Read-only 5.10.2 (FAST) Config Word1 Word2 Word3 5.10.3 (FAST) Demo-Mode Off/On


5–5

* Note: Config: Tx Scrambler, Config: Rx Descram, and Config: Rx Pilot selections are active only if the Mode selection is DVB-S2.

5.3 SELECT: (Main) Menu

Select: Configuration Test Monitor Store/Ld Utility ODU FAST (◄►)

Use the ◄ ► arrow keys to select from the choices shown, then press ENTER. The following table identifies the menu branch, its content section in this chapter, and the functional description of each branch:

Menu Branch Sect Description

Configuration 5.4 Permits user to fully configure the modem.

Test 5.5 Permits user to configure the modem into one of several Test modes, and configures/monitors the BER Tester.

Monitor 5.6 Permits user to monitor the current status of the modem and view the log of stored events for the modem.

Store/Ld 5.7 Permits user to store configured parameters into one of 10 memory locations and load (recall) those configurations at a later time.

Utility 5.8 Permits user to set operational features such as time and date, display brightness, redundancy, Circuit ID, or Firmware boot image selection.

ODU 5.9 (Outdoor Unit) Permits user to monitor and control a Comtech EF Data RF Transceiver (BUC [Block Up Converter] or LNB [Low-noise Block Down Converter]) , if connected.

FAST 5.10 (Fully Accessible System Topology) Permits user to configure different options, for extended data rates, interfaces, etc. Contact Comtech EF Data Customer Support for details.


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5.4 SELECT: Configuration

CONFIG: Tx Rx Clocks Remote IP Misc (◄►)

Use the ◄ ► arrow keys to select from the submenu choices shown, then press ENTER. The submenus available from the Configuration menu branch are as follows:

Submenu Sect Description

Tx 5.4.1 (Transmit) Permits the user to define, on a parameter-by-parameter basis, the Tx configuration of the unit. These menu submenu branches would be used if the user wished to change, for example, just the Tx Frequency.

Rx 5.4.2 (Receive) Permits the user to define, on a parameter-by-parameter basis, the Rx configuration of the unit. These menu submenu branches would be used if the user wished to change, for example, just the Rx data rate.

Clocks 5.4.3 (Clocking) Permits the usder to select internal or external frequency clocking modes.

Remote 5.4.4 (Remote Control) Permits the user to define whether the unit is being controlled locally, remotely, or via IP, and to configure the serial Remote Control parameters: baud rate, I/O format, address.

IP 5.4.5 Permits the user to configure various IP parameters, including IP address, gateway, SNMP, traps, etc. plus view MAC addresses.

Misc 5.4.6 (Miscellaneous) Permits the user to select, view, or change various other parameters.

IMPORTANT

Only one method of remote access may control the modem at a time. The modem may be monitored over the remote control bus at any time (i.e., queries only), and the front panel may be viewed.

To make configuration parameter changes from the front panel, local mode is required. Via serial remote, remote mode is required, and via IP, Ethernet remote is required.

5.4.1 CONFIG: Tx

Tx-IF Freq Power FEC Mod Data Scrambler (Data 9980.000kbps, 2851.429ksym) (◄►)

Select IF, Freq, Power, FEC, Mod, Data, or Scrambler using the ◄ ► arrow keys, then press ENTER.

5.4.1.1 (CONFIG:) Tx IF

Tx: Carrier=On MonitorPort=Off SpectrumInvert=Off (Off On) (◄►vE)

Using the ◄ ► arrow keys, select a function (Carrier, MonitorPort, or SpectrumInvert); then, using the ▲ ▼ arrow keys, set that function as On or Off. Press ENTER when done.


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When the Tx Monitor Port is turned On, an L-Band copy of the Tx carrier is provided. Note the following:

• Monitor 70/140: Frequency = 900 MHz + programmed 70/140 MHz value;

• Monitor L-Band: Frequency = the programmed L-Band value;

• The monitor output mutes when Tx Carrier=Off.

5.4.1.2 (CONFIG:) Tx Freq (Frequency)

Tx-IF Frequency: 0050.0000 MHz (◄►E)

To edit the Tx Frequency, select each digit of the frequency to be edited using the ◄ ► arrow keys, then edit the value of that digit using the ▲ ▼ arrow keys. Press ENTER when done.

The available frequency ranges are 0050.0000 to 0180.0000 (50-180) MHz, and 0950.0000 to 2150.0000 (950-2150) MHz (L-Band). The resolution is 100Hz.

5.4.1.3 (CONFIG:) Tx Power

Output Power Level: –10.0 dBm (◄►E)

To configure the Tx Output Power Level, select each digit to be edited using the ◄ ► arrow keys, then edit the value of that digit using the ▲ ▼ arrow keys. Press ENTER when done.

For Tx frequencies of 50-180 MHz, the permitted level range is –5 to –25 dBm.

For Tx frequencies of 950-2150 MHz (L-Band), the permitted level range is –5 to –40 dBm.

5.4.1.4 (CONFIG:) Tx FEC

Tx FEC Type: TPC (FPC)

This is a ‘status only’ message. The CDM-740 features TPC (Turbo Product Codec) as its sole available Tx FEC type.

5.4.1.5 (CONFIG:) Tx Mod (Modulation)

Mod Type=16QAM (QPSK,8QAM,16QAM) FEC Rate=7/8 (3/4,7/8) (◄►vE)

On the top line, use the ◄ ► arrow keys to select (Tx) Mod(ulation) Type, then set the Mod Type as QPSK, 8QAM, or 16QAM using the ▲ ▼ arrow keys. Next, using the ◄ ► arrow keys to navigate to (Tx) FEC Rate on the bottom line, then set the Tx FEC Rate to either 3/4 or 7/8 using the ▲ ▼ arrow keys. Press ENTER when done.


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5.4.1.6 (CONFIG:) Tx Data

Tx Data Rate: 9980.000 kbps Tx Symbol Rate: 2851.429 ksps (◄►E)

To configure the Tx Data Rate (in kbps), on the top line select the digit of Data Rate to be edited using the ◄ ► arrow keys, then change the value of that digit using the ▲ ▼ arrow keys. Press ENTER when done.

The maximum limits for the Tx Data Rate are 16 kbps to 9.98 Mbps. The resolution is 1 bps.

The actual minimum and maximum data rates are dependent on Framing mode, Interface type, Modulation type and FEC Code Rate. If the user changes any of the higher-priority parameters – causing the data rate to become invalid – the Tx Data Rate is adjusted automatically. The upper range of data rate will also be dictated by the FAST option(s) installed.

To configure the Tx Symbol Rate (in ksps), on the bottom line select the digit of Symbol Rate to be edited using the ◄ ► arrow keys. Change the value of that digit using the ▲ ▼ arrow keys, then press ENTER.

Refer to Table 5-1 for Tx Symbol Rate and Data Rate ranges (TPC).

Table 5-1. Tx Symbol Rate / Data Rate Ranges – TPC

Modulation FEC Code Code Rate Symbol Rate (Ksps) Spectral

Efficiency Data Rate (Kbps)

Min Max Min Max

QPSK Turbo

21/44 16.762 2996.190 0.955 16.000 2860.000 3/4 10.667 3000.000 1.500 16.000 4500.000 7/8 9.143 3000.000 1.750 16.000 5250.000 0.95 8.421 2982.105 1.900 16.000 5666.000

8-QAM Turbo 3/4 7.111 3000.000 2.250 16.000 6750.000 7/8 6.095 3000.000 2.625 16.000 7875.000 0.95 5.614 2982.456 2.850 16.000 8500.000

16-QAM Turbo 3/4 5.333 3000.000 3.000 16.000 9000.000 7/8 4.800 2851.429 3.500 16.800 9980.000

5.4.1.7 (CONFIG:) Tx Scrambler

Tx Scrambler: Off Normal IESS (◄►E)

Select Off, Normal, or IESS using the ◄ ► arrow keys, then press ENTER. Note the following: • When Normal is selected, the TPC scrambler is used. • When IESS is selected, the default ITU V.35 scrambler specified is used.


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5.4.2 CONFIG: Rx

Rx-IF Freq FEC Demod Data Descram Pilot (Data 9980.000kbps, 2851.429ksym) (◄►)

Select IF, Freq, FEC, Demod, Data, Descram, or Pilot using the ◄ ► arrow keys, then press ENTER.

5.4.2.1 (CONFIG:) Rx IF

Alpha Rolloff: .20 (.20,.25,.35) Spectrum Invert: (◄►E)

When in DVB-S2 mode only: To set the expected filter Rx Alpha Rolloff (α) of the carrier, on the top line select .20 (20%), .25 (25%), or .35 (35%) using the ▲ ▼ arrow keys. The default selection is 0.20 (20%).

The Rx Alpha Rolloff (α) dictates how fast the spectral edges of the carrier are attenuated beyond the 3 dB bandwidth. With 20% rolloff the edge falls off more quickly than with 25% and 35%.

Note: This menu is not valid in DVB-S mode, where the Rx Alpha Rolloff (α) is fixed at 35%.

To set Rx Spectrum Inversion, use the the ◄ ► arrow keys to move to the Spectrum Invert operation on the bottom line, then set operation as On or Off using the ▲ ▼ arrow keys.

Once the Alpha Rolloff and Rx Spectrum Inversion settings are made, press ENTER.

5.4.2.2 (CONFIG:) Rx Freq (Frequency)

Rx-IF Frequency: 0050.0000 MHz (◄►E)

To edit the Rx-If Frequency, select each digit to be edited using the ◄ ► arrow keys, then edit the value of that digit using the ▲ ▼ arrow keys. Press ENTER when done. The available frequency ranges are 0050.0000 to 0180.0000 (50-180) MHz, and 0950.0000 to 2150.0000 (950-2150) MHz (L-Band). The resolution is 100Hz.

5.4.2.3 (CONFIG:) Rx FEC

Rx FEC: LDPC+BCH

This is a ‘status only’ message. The CDM-740 features LDPC+BCH (Low-Density Parity Check + Bose, Chaudhuri, and Hocquengham) FEC as its sole available Rx FEC type.


5–10

5.4.2.4 (CONFIG:) Rx Demod (Demodulation)

MODCOD: Auto (Auto,DVB-S) Framing Mode=Normal (Normal,Short)(◄►vE)

On the top line, select the Demodulation type and FEC rate using the ▲ ▼ arrow keys. Selections are as follows:

• Auto • DVB-S2 8-PSK 3/5 • DVB-S2 32-APSK 3/5 • DVB-S QPSK 1/2 • DVB-S2 8-PSK 2/3 • DVB-S2 32-APSK 2/3 • DVB-S QPSK 2/3 • DVB-S2 8-PSK 3/4 • DVB-S2 32-APSK 3/4 • DVB-S QPSK 3/4 • DVB-S2 8-PSK 5/6 • DVB-S2 32-APSK 5/6 • DVB-S QPSK 5/6 • DVB-S2 8-PSK 8/9 • DVB-S2 32-APSK 8/9 • DVB-S QPSK 7/8 • DVB-S2 8-PSK 9/10 • DVB-S2 32-APSK 9/10 • DVB-S2 QPSK 1/4 • DVB-S2 16-APSK 3/5 (Reserved1)

• DVB-S2 QPSK 1/3 • DVB-S2 16-APSK 2/3 (Reserved2)

• DVB-S2 QPSK 1/2 • DVB-S2 16-APSK 3/4 (Reserved3)

• DVB-S2 QPSK 3/5 • DVB-S2 16-APSK 5/6



• DVB-S2 QPSK 5/6

• DVB-S2 QPSK 8/9

• DVB-S2 QPSK 9/10

To set the FEC Framing Mode, use the the ◄ ► arrow keys to move to the Framing Mode operation on the bottom line, then set the mode as Normal or Short using the ▲ ▼ arrow keys. The default value is Normal and, when selected, enables the standard FECFRAME = 64,800 bits. If Short is selected, it enables the 16,200 bit frame.

Note: Only DVB-S2 allows a FECRAME choice.

Once the Rx Demodulation type and FEC Framing Mode are selected, press ENTER.

5.4.2.5 (CONFIG:) Rx Data

Rx Data Rate: 00009980.000 kbps (Read) Rx Symbol Rate: 2000.000 ksps (◄►E)

To configure the Rx Data Rate (in kbps), on the top line select the digit of Data Rate to be edited using the ◄ ► arrow keys, then change the value of that digit using the ▲ ▼ arrow keys. Press ENTER when done.

The maximum limits for the Data Rate are 16 kbps to 9.98 Mbps. The resolution is 1 bps.


5–11

The actual minimum and maximum data rates are dependent on Framing mode, Interface type, Demodulation type and FEC Code Rate. If the user changes any of the higher-priority parameters – causing the data rate to become invalid – the Data Rate is adjusted automatically. The upper range of data rate will also be dictated by the FAST option(s) installed.

To configure the Rx Symbol Rate (in ksps), on the bottom line select the digit of Symbol Rate to be edited using the ◄ ► arrow keys. Change the value of that digit using the ▲ ▼ arrow keys, then press ENTER.

On the pages that follow, refer to Table 5-2 through Table 5-4 for Rx Symbol Rate and Data Rate ranges (DVB-S, DVB-S2 Normal Frame, and DVB-S2 Short Frame).

5.4.2.6 (CONFIG:) Rx Descram(bler) (DVB-S2 only)

Rx Descrambling Index: Gold-n= [000000] (◄►E)

When in DVB-S2 Mode only: The Gold-n Index indicates the Physical Layer spreading sequence number, and can be set from 0 to 262,141. The default setting is all 0s.

Edit the Gold-n Index Code by using the ◄ ► arrow keys to select the desired digit, then change the value of that digit using the ▲ ▼ arrow keys. Press ENTER when done.

5.4.2.7 (CONFIG:) Rx Pilot (DVB-S2 only)

Rx Demod Pilot: Off On (◄►E)

When in DVB-S2 Mode only: Select the Rx Demodulator Pilot as Off or On using the ◄ ► arrow keys, then press ENTER.


5–12

Table 5-2. Rx Symbol Rate / Data Rate Ranges – DVB-S

Demodulation FEC Code Code Rate Symbol Rate (Msps)

Spectral Efficiency Data Rate (Mbps)

Min Max Min Max

QPSK Viterbi + Reed-

Solomon

1/2

1 45

0.921569 0.921569 41.470588 2/3 1.228758 1.228758 55.294118 3/5 1.382353 1.382353 62.205882 5/6 1.535948 1.535948 69.117647 7/8 1.612745 1.612745 72.573529

Table 5-3. Rx Symbol Rate / Data Rate Range – DVB-S2 Normal FECFrame = 64,800 Bits

De- modulation

FEC Code

Inner Code Rate

Symbol Rate (Msps)

Spectral Efficiency Pilot OFF

Data Rate (Mbps) Pilot OFF

Spectral Efficiency Pilot ON

Data Rate (Mbps) Pilot ON

Min Max Min Max Min Max

QPSK LDPC+ BCH

1/2

1 62

0.988858 0.988858 61.309196 0.965327 0.965327 59.850274 3/5 1.188304 1.188304 73.674848 1.160026 1.160026 71.921612 2/3 1.322253 1.322253 81.979686 1.290788 1.290788 80.028856 3/4 1.487473 1.487473 92.223326 1.452076 1.452076 90.028712 4/5 1.587196 1.587196 98.406152 1.549426 1.549426 96.064412 5/6 1.654663 1.654663 102.589106 1.615288 1.615288 100.147856 8/9 1.766451 1.766451 109.519962 1.724416 1.724416 106.913792 9/10 1.788612 1.788612 110.893944 1.746049 1.746049 108.255038

8PSK LDPC+ BCH

3/5

1 62

1.779991 1.779991 110.359442 1.739569 1.739569 107.853278 2/3 1.980636 1.980636 122.799432 1.935658 1.935658 120.010796 3/4 2.228124 2.228124 138.143688 2.177525 2.177525 135.006550 5/6 2.478562 2.478562 153.670844 2.422276 2.422276 150.181112 8/9 2.646012 2.646012 164.052744 2.585924 2.585924 160.327288 9/10 2.679207 2.679207 166.110834 2.618365 2.618365 162.338630

16APSK LDPC+ BCH

2/3

1 47

2.637201 2.637201 123.948447 2.574613 2.574613 121.006811 3/4 2.966728 2.966728 139.436216 2.896320 2.896320 136.127040 4/5 3.165623 3.165623 148.784281 3.090495 3.090495 145.253265 5/6 3.300184 3.300184 155.108648 3.221863 3.221863 151.427561 8/9 3.523143 3.523143 165.587721 3.439530 3.439530 161.657910 9/10 3.567342 3.567342 167.665074 3.482680 3.482680 163.685960

32APSK LDPC+ BCH

3/4

1 38

3.703295 3.703295 140.725210 3.623332 3.623332 137.686616 4/5 3.951571 3.951571 150.159698 3.866247 3.866247 146.917386 5/6 4.119540 4.119540 156.542520 4.030589 4.030589 153.162382 8/9 4.397854 4.397854 167.118452 4.302894 4.302894 163.509972 9/10 4.453027 4.453027 169.215026 4.356875 4.356875 165.561250


5–13

Table 5-4. Rx Symbol Rate / Data Rate Range – DVB-S2 Short FECFrame = 16,200 Bits

De- modulation

FEC Code

Inner Code Rate

Symbol Rate (Msps)

Spectral Efficiency Pilot OFF

Data Rate (Mbps) Pilot OFF

Spectral Efficiency Pilot ON

Data Rate (Mbps) Pilot ON

Min Max Min Max Min Max

QPSK LDPC+ BCH

1/2

1 62

0.848840 0.848840 52.628080 0.830585 0.830585 51.496270 3/5 1.156532 1.156532 71.704984 1.131661 1.131661 70.162982 2/3 1.288400 1.288400 79.880800 1.260693 1.260693 78.162966 3/4 1.420269 1.420269 88.056678 1.389725 1.389725 86.162950 4/5 1.508181 1.508181 93.507222 1.475747 1.475747 91.496314 5/6 1.596093 1.596093 98.957766 1.561768 1.561768 96.829616 8/9 1.727961 1.727961 107.133582 1.690800 1.690800 104.829600 9/10 N/A N/A N/A N/A N/A N/A

8PSK LDPC+ BCH

3/5

1 62

1.725319 1.725319 106.969778 1.692033 1.692033 104.906046 2/3 1.922040 1.922040 119.166480 1.884959 1.884959 116.867458 3/4 2.118761 2.118761 131.363182 2.077885 2.077885 128.828870 5/6 2.381056 2.381056 147.625472 2.335120 2.335120 144.777440 8/9 2.577778 2.577778 159.822236 2.528046 2.528046 156.738852 9/10 N/A N/A N/A N/A N/A N/A

16APSK LDPC+ BCH

2/3

1 47

2.548792 2.548792 119.793224 2.505223 2.505223 117.745481 3/4 2.809662 2.809662 132.054114 2.761633 2.761633 129.796751 4/5 2.983575 2.983575 140.228025 2.932574 2.932574 137.830978 5/6 3.157488 3.157488 148.401936 3.103514 3.103514 145.865158 8/9 3.418357 3.418357 160.662779 3.359924 3.359924 157.916428 9/10 N/A N/A N/A N/A N/A N/A

32APSK LDPC+ BCH

3/4

1 38

3.493093 3.493093 132.737534 3.419165 3.419165 129.928270 4/5 3.709309 3.709309 140.953742 3.630805 3.630805 137.970590 5/6 3.925526 3.925526 149.169988 3.842446 3.842446 146.012948 8/9 4.249850 4.249850 161.494300 4.159906 4.159906 158.076428 9/10 N/A N/A N/A N/A N/A N/A


5–14

5.4.3 CONFIG: Clocks

Clocking: Ext-Ref Int-Ref-Adj (◄►E)

Select Ext-Ref or Int-Ref-Adj using the ◄ ► arrow keys, then press ENTER.

5.4.3.1 (CONFIG:) Clocks Ext-Ref

External Frequency Reference: Int10 Ext1 Ext2 Ext5 Ext10 10+Output

Select Int10, Ext1, Ext2, Ext5, Ext10, or 10+Output using the ◄ ► arrow keys, then press ENTER. Note the following:

Selection Description Int10 Internal Reference selection is available at 10 MHz. Ext1

The unit phase locks to the external input at the rear panel BNC connector labeled EXT REF for External 1, 2, 5, or 10 MHz input.

Ext2 Ext5 Ext10 10+Output The Internal 10 MHz Reference is available via the rear panel BNC connector labeled EXT REF.

5.4.3.2 (CONFIG:) Clocks Int-Ref-Adj

Internal Hi-Stability 10Mhz Reference Fine Adjust: +000 (+/-999) (◄►E)

Fine adjustment of the Internal 10 MHz reference oscillator is possible through this menu. Use the ▲ ▼ arrow keys to edit both the sign ( + [positive] or – [negative]) and the value. The range of values is from –999 to +999.

Note: The numbers displayed here do not correspond to an exact frequency increment. A user should perform this fine adjustment while using an external frequency counter, connected to either:

a) the internal 10 MHz reference, if the user has internal access to the equipment, or

b) the Tx Output, set for CW, 0 dBm output level, and an exact center frequency (1000 MHz, for example).

IMPORTANT

In order for this operating parameter to be retained, the user must save this configuration in any one of the 10 available modem configurations (SELECT: Utility Save/Load). Otherwise, when the CDM-740 power is cycled, this value will be reset.


5–15

5.4.4 CONFIG: Remote

Remote Control= Local Serial Ethernet (◄►E)

Select Local, Serial, or Ethernet using the ◄ ► arrow keys, then press ENTER.

If Local is selected, then reconfiguration via Serial Remote or Ethernet is not permitted. Remote monitoring is still possible.

5.4.4.1 (CONFIG:) Remote Serial

Serial 485 Address: 0001 Baud Rate: 38400(Read only) (◄►v E)

To edit the Serial 485 Address, select each digit of the Address using the ◄ ► arrow keys, then edit the valuve of that digit using the ▲ ▼ arrow keys. Press ENTER when done. The permitted address range is 0001 to 9999.

Note: Address 0 is reserved for universal addressing. Character format is not selectable and is fixed at 8-N-1.

5.4.5 CONFIG: IP

IP Config: GE1 GE2 Mgmt SNMP: Read-Cmty Write-Cmty Trap (◄►)

On the top line, select GE1, GE2, or Mgmt using the ◄ ► arrow keys, then press ENTER to edit the pertinent IP Configuration parameters. Note that, with the exception of the screen label, the function of these three IP configuration submenus is identical. For brevity, all three are explained next in Sect. 5.4.5.1.

On the bottom line, using the ◄ ► arrow keys to select the SNMP Configuration parameter to edit (Read-Cmty, Write-Cmty, or Trap). Refer to Sect. 5.4.5.2 through Sect. 5.4.5.4 for further details.


5–16

5.4.5.1 (CONFIG:) IP (GE1 / GE2 / MGMT)

GE1: Addr/Range MAC Gateway Link-Config NegoSpeed (◄►)

GE2: Addr/Range MAC Gateway Link-Config NegoSpeed (◄►)

MANAGEMENT: Addr/Range MAC Gateway Link-Config NegoSpeed (◄►)

Select Addr/Range, MAC, Gateway, Link-Config, or NegoSpeed using the ◄ ► arrow keys, then press ENTER.

(CONFIG:) IP (GE1 / GE2 / MGMT) Addr/Range

[HEADER] Ethernet IP Address/Range: 192.168.001.002/24 (◄►E)

Where [HEADER] is GE1, GE2, or MANAGEMENT: To configure the IP Address for the Ethernet M&C port for this interface, use the ◄ ► arrow keys to select the character to edit, then the ▲ ▼ arrow keys to edit the value of that digit. Press ENTER when done.

(CONFIG:) IP (GE1 / GE2 / MGMT) MAC

[HEADER] Ethernet MAC Address (Read-Only) 00-06-B0-00-01-06 (◄►E)

Where [HEADER] is GE1, GE2, or MANAGEMENT: This is a ‘status only’ display showing the interface MAC address. Exit this read-only screen by pressing ENTER or CLEAR.

(CONFIG:) IP (GE1 / GE2 / MGMT) Gateway

[HEADER] Ethernet IP Gateway: 192.168.001.002 (◄►E)

Where [HEADER] is GE1, GE2, or MANAGEMENT: To edit the IP Gateway Address for the Ethernet M&C port for this interface, use the ◄ ► arrow keys to select the character to edit, then use the ▲ ▼ arrow keys to edit the value of that digit. Press ENTER when done.

(CONFIG:) IP (GE1 / GE2 / MGMT) Link-Config

[HEADER] Link Configuration: Auto 1000F 100F 100H 10F 10H (◄►E)

Where [HEADER] is GE1, GE2, or MANAGEMENT: To configure the line speed and duplex setting for this interface, use the ◄ ► arrow keys to select the configuration setting, then press ENTER.


5–17

Note the following:

Selection Description

Auto The port will auto-negotiate the configuration of the port (recommended when the configuration of the port is unknown)

1000F 1000 Mb / Full Duplex 100F 100 Mb / Full Duplex 100H 100 Mb / Half Duplex 10F 10 Mb / Full Duplex 10H 10 Mb / Half Duplex

(CONFIG:) IP (GE1 / GE2 / MGMT) NegoSpeed

[HEADER] Negotiated Speed (read-only) Down 1000F 100F 100H 10F 10H (◄►E)

Where [HEADER] is GE1, GE2, or MGMT( MANAGEMENT): This is a ‘status only’ display showing the negotiated line speed and duplex setting for this interface. Exit this read-only screen by pressing ENTER or CLEAR.

Note the following:

Selection Description Down Ethernet is disconnected 1000F 1000 MB / Full Duplex 100F 100 MB / Full Duplex 100H 100 MB / Half Duplex 10F 10 MB / Full Duplex 10H 10 MB / Half Duplex

5.4.5.2 (CONFIG:) IP (SNMP) Read-Cmty

SNMP Read Community (Max 15 chars) [public ] (◄►E)

To edit the SNMP Read Community string, use the ◄ ► arrow keys to select the character to edit, then use the ▲ ▼ arrow keys to select the desired character.

Note: Only the first 15 characters on the bottom line are available.

All printable ASCII characters are available with the exception of the backslash (ASCII code 92) and ~ (ASCII code 126).

Once the string has been composed, press ENTER. All trailing spaces are removed from the Read Community string upon entry.


5–18

5.4.5.3 (CONFIG:) IP (SNMP) Write-Cmty

SNMP Write Community (Max 15 chars) [private ] (◄►E)

To edit the SNMP Write Community string, use the ◄ ► arrow keys to select the character to edit, then use the ▲ ▼ arrow keys to select the desired character. Note: Only the first 15 characters on the bottom line are available. All printable ASCII characters are available with the exception of the backslash (ASCII code 92) and ~ (ASCII code 126).

Once the string has been composed, press ENTER. All trailing spaces are removed from the Write Community string upon entry.

5.4.5.4 (CONFIG:) IP SNMP Trap

SNMP Trap IP: 000.000.000.000 (◄►E)

This menu permits the user to edit the Trap Destination’s IP Address. Use the ◄ ► arrow keys to select the character to edit, then use the ▲ ▼ arrow keys to edit the value of the character. If the Trap IP Address is 000.000.000.000, it means Trap is disabled.

5.4.6 CONFIG: Misc

High-Stab Reference Warm-Up Delay: Disable Enable (◄►E)

The High-Stability Reference Module contains an oven for the crystal. It can take a little time for the oven & crystal to come up to temperature; during this time, the frequency accuracy is not guaranteed. The warm-up delay is calculated by the modem, based on temperature and the amount of time the unit was turned off. This is much more important at L-Band (950-2150 MHz) than at 50-180 MHz, where the 10 MHz reference may also be used for RF conversion equipment.

Use the ◄ ► arrow keys to Disable or Enable a Warm-up Delay, which will be implemented on power-up. Press ENTER when done.


5–19

5.5 SELECT: Test

TEST: Mode BERT Pattern (◄►)

Select Mode, BERT, or Pattern using the ◄ ► arrow keys, then press ENTER.

5.5.1 TEST: Mode

Modem Test Mode: Normal Tx-CW Tx-1/0 (◄►E)

Select Normal operation, Tx-CW, or Tx-1/0 using the ▲ ▼ arrow keys, then press ENTER. Note the following:

Selection Description

Normal (Normal) This clears any test modes and places the unit back into an operational state.The TEST MODE LED on the CDM-740 front panel will turn OFF.

Tx-CW (Transmit CW) This is a test mode that forces the modulator to transmit a pure carrier (unmodulated). The TEST MODE LED on the CDM-740 front panel will turn ON.

Tx-1/0

(Transmit an alternating 1,0,1,0 pattern) This test mode forces the modulator to transmit a carrier modulated with an alternating 1,0,1,0 pattern at the currently selected symbol rate. This causes two discrete spectral lines to appear, spaced at +/- half the symbol rate about the carrier frequency. This mode is used to check the carrier suppression of the Modulator. The TEST MODE LED on the CDM-740 front panel will turn ON.

5.5.2 TEST: BERT

Tx BERT State: Off On (◄►E)

Set the Tx BERT State as On or Off using the ◄ ► arrow keys, then press ENTER. When On is selected, the Test Mode LED on the CDM-740 front panel will turn ON.

5.5.2.1 TEST: Pattern

Tx BERT Pattern: 2E23-1 2047 (◄► E)

Select 2E23-1 or 2047 using the ◄ ► arrow keys, then press ENTER. Note the following:

Selection Description 2E23-1 A pseudo-random data pattern of 2E23 –1, compatible with standard BERTs. 2047 A pseudo-random data pattern of 2E11 –1, compatible with standard BERTs.


5–20

5.6 SELECT: Monitor

Monitor: Live-Alarms Stored-Events Rx-Params IP-Stats (◄►)

Select Live-Alarms, Stored-Events, Rx-Params, or IP-Stats using the ◄ ► arrow keys, then press ENTER.

5.6.1 Monitor: Live-Alarms

Live Alarms Unit=Unit OK Tx=Traffic OK Rx=Demod Unlocked

An example of an Alarm screen is shown. Three alarm types are available. The highest priority alarm currently active for each of the alarm types is as follows:

a = Unit status: 0 = No faults 1 = Power supply fault, +5 volts 2 = Power supply fault , +12 volts 3 = Power supply fault, +3.3 volts 4 = Tx synthesizer unlocked 5 = Tx FPGA PLL unlocked 6 = Modulator FPGA load fail 7 = TPC/LDPC FPGA load fail 8 = Reference unlocked (Note: Tx off) 9 = Unit Temperature Exceeded b = Tx Traffic status: 0 = Tx traffic OK 1 = Tx FIFO slip 2 = Tx 130 MHz PLL unlocked 3 = (Hi-Stab) No External Ref found (no activity) c = Rx 1 Traffic status: 0 = Rx Traffic OK 1 = Demodulator unlocked 2 = Rx FIFO Overrun


5–21

5.6.2 Monitor: Stored-Events

Stored Events: Clear-All View (◄►E)

Select View or Clear-All using the ◄ ► arrow keys, then press ENTER.

5.6.2.1 (Monitor:) Stored-Events Clear-All

Clear All Stored Events: No Yes (◄►)

Use the ◄ ► arrow keys to select Yes or No. Press ENTER when done. If Clear-All=Yes is selected, the event log is cleared and the user is returned directly to the previous menu. However, if there already are faults present on the unit at this time, they will be re-time-stamped, and new log entries will be generated.

5.6.2.2 (Monitor:) Stored-Events View

Event 006(v): 01/01/09 00:00:00:24 Clear Unit FEC card

An example of a Stored Events screen is shown. The event log can store up to 255 events. When a fault condition occurs, it is time- & date-stamped and put into the log. Similarly, when the fault condition clears, this is also recorded. Note that, in accordance with international convention, the date is shown in DAY-MONTH-YEAR format. Use the ▲ ▼ arrow keys to scroll up and down through the event log entries. Press ENTER or CLEAR to return to the previous menu.

5.6.3 Monitor: Rx-Params

Rx Parameters: EsNo=99.9 BER=9999 RxLevel=LT-90

This read-only screen provides the active Rx Parameters mode information as follows:

Item Description

EsNo Displays the value of Es/No calculated by the demodulator. The value referred to here is the energy per symbol bit (Es), divided by the noise spectral density (No).

BER Displays an estimate of the corrected Bit Error Rate.

RxLevel Displays the dBm reading indicating the signal level of the desired receive carrier. Resolution: 0.5dB


5–22

5.6.4 Monitor: IP-Stats

View: Mod/Demod GE1 GE2 Clear: Mod Demod GE1/GE2 All (◄►)

To view IP operating statistics: From the top line of the Monitor: IP-Stats menu, select Mod/Demod, GE1, or GE2 using the ◄ ► arrow keys, then press ENTER. Examples of the Mod/Demod and GE statistics screens (where GE# represents GE1 or GE2) are as follows:

View(v): Demod: 2300 Pkts Mod: 2400

GE# STATS(v) IN: 2440 Pkts OUT: 2112

For all menus, use the ▲ ▼ arrow keys to scroll through the available statistics. For a list of the statistics available on these, refer to the table on the following page. Press ENTER or CLEAR to exit the screen and return to the previous menu. To clear IP operating statistics: From the bottom line of the Monitor: IP-Stats menu, select Mod, Demod, GE1/GE2, or All using the ◄ ► arrow keys, then press ENTER. For any selection, when prompted select No or Yes using the ◄ ► arrow keys, then press ENTER, as per the following example:

Clear All Stats: No Yes (◄►E)

Monitor: IP Stats Submenus – Available Statistics Summary

Statistic Description Submenu

Mod/Demod GE1 GE2

Pkts Number of packets. X X X

Max Data Rate Maximum Data Rate. X X X

Data Rate Current Data Rate. X X X

MC Dropped Multicast packets dropped. X N/A N/A

UC Dropped Unitcast packets dropped. X N/A N/A

Dropped Total packets dropped. X N/A N/A

Multicast Multicast packets sent/received X X X

Unicast Unitcast packets sent/received. X X X


5–23

5.7 SELECT: Store/Ld

Configuration #2: Load Store AVAILABLE (◄►vE)

The user can store up to 10 different modem configurations, numbered 0 through 9.

Select the configuration location number using the ▲ ▼ arrow keys, then select Load or Store using the ◄ ► arrow keys. Press ENTER when done.

As a modem configuration is stored, the time and date is recorded. This time and date information is shown on the bottom line as the location number is selected. A memory location that is available is noted on the bottom line as AVAILABLE.

(Store/Load:) Override Whether storing a configuration into a location or loading a configuration into the working memory from a stored location, the user is required to confirm the request, as information will be overwritten:

Configuration #2. Override? No Yes 14:06:37 26/10/06 (◄►E)

Select the Override choice (No or Yes) using the ◄ ► arrow keys, then press ENTER.


5–24

5.8 SELECT: Utility

Utilities: Set-RTC Display-Brightness 1:1 1:N Circuit-ID Firmware (◄►E)

Select Set-RTC, Display-Brightness, 1:1, 1:N, Circuit-ID, or Firmware using the ◄ ► arrow keys, then press ENTER.

5.8.1 Utilities: Set-RTC

Time: 12:01:02 hh:mm:ss Date: 26/10/06 dd/mm/yy (◄►E)

To edit the time and date settings of the RTC (Real-Time Clock), select the digit to be edited using the ◄ ► arrow keys, then edit the value of that digit using the ▲ ▼ arrow keys. Press ENTER when done.

IMPORTANT

Note that in accordance with international convention, the date is shown in DAY-MONTH-YEAR format.

5.8.2 Utilities: Display-Brightness

Display Brightness: 1 .75 .50 .25 (◄► )

To edit the brightness of the VFD (Vacuum Fluorescent Display), use the the ◄ ► arrow keys to select a suitable brightness level. The selectable values are 1 (100%), .75 (75%), .50 (50%), or .25 (25%). Press ENTER when done.

5.8.3 Utilities: 1:1

Press ENTER key to force unit into Standby (1:1 only)

The CDM-740 automatically detects the presence of a CRS-175L L-Band 1:1 Redundant Switch. If Utility: 1:1 is selected and this unit is currently online and part of a 1:1 redundant modem pair operating in tandem with a CRS-175L switch, the user is prompted to press ENTER (as indicated above); this command then automatically forces the switchover of operation to the standby unit.

If, however, 1:1 is selected from the Utility menu branch and no CRS-175L switch is detected, the following error message displays:

... Error ... No Valid Redundancy

For detailed information about 1:1 redundant operation, refer to Appendix C. 1:1 REDUNDANCY in this manual.


5–25

5.8.4 Utilities: 1:N (UNUSED)

The CDM-740 presently does not accommodate 1:N redundant operations; therefore, while selectable, this submenu is non-functional. If, however, 1:N is selected from the Utility menu branch – regardless of the presence of a CRS-175L switch – the following error message displays:


5.8.5 Utilities: Circuit-ID

Circuit ID (max length 32) [comtech ef data ]

This menu allow the user to enter a Circuit ID string. Use the ◄ ► arrow keys to position the cursor on to the character to be edited, then edit the character using ▲ ▼ arrow keys. The following characters are available:

[Space] ( ) * + - , . / 0-9 and A-Z.

Only the bottom line (32 characters) is available. Once the Circuit ID string is composed, press ENTER.


5–26

5.8.6 Utilities: Firmware

IMPORTANT

THESE MENUS ARE FOR DIAGNOSTIC PURPOSES. ONLY CHANGE AN IMAGE IF INSTRUCTED TO DO SO BY A COMTECH EF DATA CUSTOMER SUPPORT TECHNICIAN.

This series of submenus permits the user to view information about the CDM-740 internal firmware. The modem can store two complete firmware images, and the user can select which image will be loaded the next time the unit reboots.

Firmware Images Info Select (◄►)

Select Info or Select using the ◄ ► arrow keys, then press ENTER.

5.8.6.1 (Utilities): Firmware Info

Firmware Information BootRom Image#1 Image#2 (◄►)

Select BootRom, Image#1, or Image#2 using the ◄ ► arrow keys, then press ENTER.

(Utilities:) Firmware Info Bootrom

Bootrom Version (Read Only): BSP Version: 2.0 Rev: /1)

This read-only screen displays, as shown per the example, the BootRom version number. Press ENTER or CLEAR to exit the screen and return to the previous menu.

(Utilities:) Firmware Info Image#1 / Image#2

Image #X: FW-0000279- 07/10/09 1.1.1

Where X represents the Image# selected: This read-only screen displays, as shown per the example, the firmware name, its release date (in International DD/MM/YY format), and the firmware release version number. Press ENTER or CLEAR to exit the screen and return to the previous menu.

5.8.6.2 (Utilities): Firmware Select

Current Active Image is #1 Next boot will use: Latest #1 #2 (◄►E)

The top line shows the current active image. On the bottom line, the user may use the ◄ ► arrow keys to select the other image (#1 or #2) or the firmware with the latest release date (Latest), then press ENTER. A message shows that the unit will need to be rebooted.


5–27

5.9 SELECT: ODU

The CDM-740 modem is able to interface with various ODUs (Outdoor Units). These are: • L-Band BUC (Block Upconverter); • L-Band LNB (Low Noise Block Downcoverter).

The ODU configuration menus allow the user to set up power supplies, a 10 MHz reference and low/high current alarm thresholds for the BUC and LNB. LO menus for the BUC and LNB allow the user to set up the up-convert and down-convert parameters for the BUC and LNB so that the user can view the satellite frequencies as well as the modem IF input/output frequencies.

BUC: BUC_LO Power 10M-Ref Alarm Monitor LNB: LNB_LO 22K-Tone Polarity (◄►)

Use the ◄ ► arrow and ENTER keys to select a submenu. Note the following:

For Submenu Permits user to…

BUC (Top line)

BUC_LO … enter a BUC LO (local oscillator) frequency and (+/-) sign.

Power … set BUC power supply parameters.

10M-Ref … control the BUC 10MHz Reference.

Alarm … control BUC high and low alarm limits.

Monitor … monitor BUC power supply and current parameters.

LNB (Bottom line)

LNB_LO … enter an LNB LO (local oscillator) frequency and (+/-) sign.

22K-Tone … set the 22KHz tone outbound from L-Band connector per DiSEq 4.2

Polarity

… control the LNB DC Power. Note the following: • OFF = DC Power is off • Horizontal is on 18V • Vertical is on 13V.

5.9.1 ODU: (BUC:) BUC_LO

BUC_LO: 00000.000 MHz Terminal Mix: [+] TTF: +1950.0000

On the top line, the user may enter the BUC LO frequency for the up conversion. Entering a non-zero value for BUC LO will cause the Tx-IF frequency menu to show LO and Satellite frequencies. Edit the BUC LO frequency by using the ◄ ► arrow keys to select the digit to be edited, then use the ▲ ▼ arrow keys to set the value of that digit. The valid LO range is 3000 to 65000 MHz. On the bottom line, the Terminal Mix sets the polarity for the upconversion mix in the BUC:

• [+] indicates a high side, inverting mix; • [–] indicates a low side, non-inverting mix.

Note: Satellite frequency = LO frequency +/- modem frequency. To set the sign for the Terminal Mix, use the ◄ ► arrow keys to navigate to the setting, then use the ▲ ▼ arrow keys to edit the Terminal Mix setting as positive [+] or negative [–]. Note: The TTF: (Transmit Terminal Frequency) value is provided on a ‘status only’ basis.


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5.9.1.1 ODU: (BUC:) Power

BUC Power Enable: Off Output Power Enable: Off (◄►vE)

Select the power parameter to edit using the ◄ ► arrow keys, then use the ▲ ▼ arrow keys to edit the setting as Off or On. Press ENTER when done.

5.9.1.2 ODU: (BUC:) 10M-Ref

BUC 10 MHz Reference: Off On (◄►E)

Select the 10MHz Reference as Off or On using the ◄ ► arrow keys, then press ENTER. Note: A BUC will not transmit without a 10MHz Reference.

5.9.1.3 ODU: (BUC) Alarm

Alarm Limit Low: 0000 mA Alarm Limit High: 4000 mA

To set the Low and High Alarm Limits between 0 and 4000 mA, in 100mA increments, use the ◄ ► arrow keys to select the digit to be edited, then use the ▲ ▼ arrow keys to set the value of that digit. Press ENTER when done. The default values (mA) are (low) #### and (high) ####.

5.9.1.4 ODU: (BUC) Monitor

BUC Power Monitor: 0000 mA, 00.1 V

This read-only display provides the BUC power supply current and voltage information. Press ENTER or CLEAR to return to the previous menu.

5.9.1.5 ODU: (LNB) LNB_LO

LNB_LO: 00000.000 MHz Terminal Mix: [+] RTF: +1950.0000

On the top line, the user may enter the LNB LO frequency for the down conversion. Entering a non-zero value for LNB LO will cause the Rx-IF frequency menu to show LO and Satellite frequencies. Edit the LNB LO frequency by using the ◄ ► arrow keys to select the digit to be edited, then use the ▲ ▼ arrow keys to set the value of that digit. The valid LO range is 3000 to 65000 MHz. On the bottom line, the Terminal Mix sets the polarity for the downconversion mix in the LNB:

• [+] indicates a high side, inverting mix;


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• [–] indicates a low side, non-inverting mix. Note: Satellite frequency = LO frequency +/- modem frequency. To set the sign for the Terminal Mix, use the ◄ ► arrow keys to navigate to the setting, then use the ▲ ▼ arrow keys to edit the Terminal Mix setting as positive [+] or negative [–]. Note: The RTF: (Receive Terminal Frequency) value is provided on a ‘status only’ basis.

5.9.1.6 ODU: (LNB) 22K-Tone

Rx LNB 22KHz Tone: Off On (◄►E )

Select the LNB 22KHz Tone as Off or On using the ◄ ► arrow keys, then press ENTER.

5.9.1.7 ODU: (LNB) Polarity

Rx Polarity: Off Horizontal Vertical (◄►E )

Select the Rx Polarity as Off, Horizontal, or Vertical using the ◄ ► arrow keys, then press ENTER. Note the following:

• Horizontal corresponds to 18 volts (or LHCP); • Vertical corresponds to 13 volts (or RHCP).


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5.10 SELECT: FAST

FAST: Options Configure Demo-Mode Baseboard S/N 100000004 (◄►E )

FAST (Fully Accessible System Topology) is the way to enable new options in the modem. Available FAST options include:

► Tx Freq Range: IF70-140 MHz ► Tx TPC Data Rate: 16-9980 kbps ► Tx FEC: TPC ► Rx FEC/Symbol Rate: DVBS to 45 Msps / DVBS2 to 62 Msps ► Rx Demodulation: DVBS / DVBS2 / QPSK / 8PSK / 16APSK / 32 APSK ► CCM

On the top line, select the Options, Configure, or Demo-Mode using the ◄ ► arrow keys, then press ENTER. The bottom line provides the CDM-740’s baseboard serial number. This number is required when contacting Comtech EF Data Customer Support to purchase any FAST upgrades.

5.10.1 FAST: Options

Demod Support CCM (v)

Use the ▲ ▼ arrow keys to scroll through the listings of available FAST option displays, similar to the above example. Each FAST option is available via its own FAST unlock codes. Contact Comtech EF Data Customer Support to obtain the FAST code for the desired option.

5.10.2 FAST: Configure

FAST Config: Word1 Word2 Word3

FAST: Configure is used to enable new options in the modem. The FAST options are accessed via three separate internal EEPROM registers, each using its own FAST unlock code. It is important to use the appropriate FAST unlock code for the appropriate register. Select the correct register menu – Word1, Word2, or Word3 using the ◄ ► arrow keys, then press ENTER.


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5.10.2.1 FAST: Configure Word#

FAST: Set register#: Enter code below 88888888888888888888 then [ENTER] (◄►v)

Where # represents the selected EEPROM Register # (Word1, Word2, or Word3 on the previous menu): Obtain the FAST code for the new option from Comtech EF Data. Enter the code carefully. Use the ◄ ► arrow keys to move the cursor to each character, then use the ▲ ▼ arrow keys to edit the character. When all characters are edited, press ENTER. The modem will respond with “Configured Successfully” if the new FAST option has been accepted; otherwise, if an invalid code is entered, the following error message is displayed:

...Error... ...Please Verify Your Input...

Carefully re-enter the code after being automatically returned to the previous menu. If the problem persists, contact Comtech EF Data Customer Support for further assistance.

5.10.3 FAST: Demo-Mode

FAST Options Demo Mode: Off (Off,On) (v) 1209600 seconds remaining.

When enabled, Demo Mode allows access to ALL CDM-740 FAST options for 2592000 seconds (30 full days). Demo Mode may be turned on and off an unlimited number of time until the 2592000 seconds have expired. The time count only decrements when the mode is On.

Use the ▲ ▼ arrow keys to select Demo-Mode as Off or On. When On, the bottom line will display the number of seconds remaining for the free Demo Mode.

When the Demo period expires, the following menu is displayed:

FAST Options Demo Mode: Expired (v) 000000 seconds remaining.


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Notes:

6–1

Chapter 6. ETHERNET MANAGEMENT

6.1 Introduction

The CDM-740 Advanced Satellite Modem is equipped with an RJ-45, 10/100 BaseT Ethernet management interface, labeled FE, that is used for monitor and control purposes.

This chapter provides a high-level overview of the functionality provided by this interface, and references other chapters in this manual for further details.

6.2 Ethernet Management Interface Protocols

The modem’s 10/100BaseT Ethernet Management (FE) Interface supports three (3) different management protocols:

• SNMP with public and private MIB;

• Telnet interface for remote product M&C;

• Web Server interface for complete product management.

6.3 SNMP Interface

The Simple Network Management Protocol (SNMP) is an application-layer protocol designed to facilitate the exchange of management information between network devices. The CDM-740 SNMP agent supports both SNMPv1 and v2c.

IMPORTANT

For proper SNMP operation, the CDM-740 MIB files must be used with the associated version of the CDM-740 modem M&C. Please refer to the CDM-740 FW Release Notes for information on the required FW/SW compatibility.

CDM-740 Advanced Satellite Modem Revision 0 Ethernet Management MN-CDM740

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6.3.1 Management Information Base (MIB) Files

MIB files are used for SNMP remote management and consist of Object Identifiers (OIDs). Each OID is a node that provides remote management of a particular function. A MIB file is a tree of nodes that is unique to a particular device.

The following MIB files are associated with the CDM-740:

MIB File/Name Description

FW10874-2-.mib ComtechEFData Root MIB file

ComtechEFData MIB file gives the root tree for ALL Comtech EF Data products and consists of only the following OID:

Name: comtechEFData Type: MODULE-IDENTITY OID: 1.3.6.1.4.1.6247 Full path: iso(1).org(3).dod(6).internet(1).private(4).enterprises(1).comtechEFData(6247) Module: ComtechEFData

FW-0000287- .mib CDM-740 MIB file MIB file consists of all of the OID’s for management of the modem functions

These MIB files should be compiled in a MIB Browser or SNMP Network Monitoring System server.

Note: The SNMP agent supports both “SNMPv1” and “v2c”.

6.3.2 SNMP Community Strings

The modem uses community strings as a password scheme that provides authentication before gaining access to the modem agent’s MIBs.

In “SNMP v1/v2c”, the community string is sent unencrypted in the SNMP packets. Caution must be taken by the network administrator to ensure that SNMP packets travel only over a secure and private network if security is a concern. A packet sniffer can easily obtain the community string by viewing the SNMP traffic on the network.

The community string is entered into the MIB Browser or Network Node Management software and is used to authenticate users and determine access privileges to the SNMP agent.

The user defines two Community Strings for SNMP access:

• Read Community default = public

• Write Community default = private


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6.4 Telnet Interface

The modem provides a Telnet interface for the purpose of Equipment M&C via the standard equipment Remote Control protocol.

The Telnet interface Requires user login at the Administrator level and Read/Write level.

The screen capture below shows the login process:

Once logged into the Telnet interface as the Administrator, the user can access the standard remote control interface defined in Appendix A. REMOTE CONTROL, as shown in the following example:


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6.5 Web Server (HTTP) Interface

The sections that follow describe the functionality of the CDM-740 Advanced Satellite Modem Web Server (HTTP) Interface. Please refer to Chapter 5. FRONT PANEL OPERATION, and the Remote Commands Specifications tables found in Appendix D. REMOTE CONTROL for detailed descriptions of the configuration parameters featured on the individual Web pages shown in this chapter.

6.5.1 Web Server Introduction

The embedded Web Server application provides the user with an easy to use interface to configure and monitor all aspects of the CDM-740. These Web pages have been designed for optimal performance when using Microsoft’s Internet Explorer Version 5.5 or higher (the examples shown use Internet Explorer Version 6.0). The user can fully control and monitor base operations of the CDM-740 from the Web Server Interface. The user may access an operations page by selecting any one of the available navigation tabs – and nested tabs, where applicable – located along the top of each page (right).

6.5.2 Web Server Menu Tree

The menu tree illustrates the options available through this interface:

Home Management Network Demod Decap MOD Statistics Monitor Utility

Main FE Mgt Tuner-1 Tuner-1 Summary

SNMP GE-1 Config Tuner-1

FAST GE-2 Status GE-1

Firmware Utilities GE-2

Auto Logout Modulator


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6.5.3 User Login

To initiate a Web session with the CDM-740 Modem, from the PC type http://xxx.yyy.zzzz (where “xxx.yyy.zzz” represents the IP address of the CDM-740 Advanced Satellite Modem) into the Address area of the Web browser:

The Login window will appear, and the user is prompted to type a User Name and Password:

Note the following:

HTTP Login Access Levels

User Interface User Login Access Level

Admin User Read/Write User Read Only User

Web Full Access to all Web Pages

No Access to Admin or Encryption Web pages

No Access to Admin or Encryption Web pages

Full Access for all other Web Pages

View Only Access for all other Web Pages

and:

CDM-740 Advanced Satellite Modem Web Server Default Name/Passwords User Login Access Level Default Name Default Password

Admin comtech comtech Read/Write opcenter 1234 Read Only monitor 1234

Type the appropriate User Name and Password, then click [Log On].


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6.5.4 Web Server Page Descriptions

6.5.4.1 Home (Splash) Page

Figure 6-1. CDM-740 Advanced Satellite Modem Home (Splash) page Once the valid User Name and Password is accepted, the user will see the CDM-740 Web Server Interface “splash” page. From this top level menu, the user has access to nine (9) navigation tabs:

• Home • MOD (Modulator) • Management • Statistics • Network • Statistics • DEMOD (Demodulator) • Monitor • DECAP (Decapsulator) • Utility

Typical Page Features Many of the pages in the CDM-740 Web Server Interface feature a “virtual panel” providing ‘real-time’ information as follows:

Column Function

Input Port Status

Lock Displays the LOCK STATUS of the demodulator as Locked or Unlocked. MODCOD Displays the active demodulation type and FEC rate

Es/No (dB) Displays the value of Es/No calculated by the demodulator. The value referred to here is the energy per symbol bit (Es), divided by the noise spectral density (No).

BER Displays an estimate of the corrected Bit Error Rate.

RSL (dbM) Displays the dBm reading indicating the signal level of the desired receive carrier.

Modem Status This display emulates the LED Indicator array on the CDM-740 Front Panel, and provides the user with a ‘heads-up’ reference to the unit’s active operational status.

Click any tab to continue.


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6.5.4.2 Management Pages

The ‘Management’ pages provide the means to set up the access parameters required to facilitate communication with the CDM-740 Web Server.

IMPORTANT

The Management pages are available only to users who have logged in using the Administrator Name and Password.

6.5.4.2.1 Management | Main Page

Figure 6-2. Management | Main page

The ‘Management | Main’ page (Figure 6-2) is used to configure the following CDM-740 utility functions:

Unit Name The product in use – in this case, the CDM-740 Advanced Satellite Modem – is identified here.

System Contact / System Location E-mail and telephone contact information for Comtech EF Data Customer Support are provided here.

Set Time The user may enter a time using HH:MM:SS format (where HH = hour [00 to 23], MM = minutes [00 to 59], and SS = seconds [00 to 59]).


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Set date The user may enter a date using international format in the form DD/MM/YY (where DD = day [01 to 31], MM = month [01 to 12], and YY = year [00 to 99]).

Circuit ID The user may enter a Circuit ID string of up to 24 characters. Once the desired string had been entered in this section, click [Enter Circuit ID] as needed to save this change.

External Frequency Reference Use the dropdown menu to select the External Frequency Reference. The choices are:

• Internal 10 MHz • External 1 MHz • External 2 MHz • External 5 MHz • External 10 MHz • Internal 10 MHz plus output

Adjustment for Internal 10 MHz High Stability Reference Type in a value ranging from –999 to (+)999.

Once the desired configuration settings have been made in this first section, click [Submit] to save these changes.

User Name The User Name for the CDM-740 has a maximum of 15 characters.

Password / Confirm Password The admin user may enter a password string of up to 24 characters. Once the desired password string has been typed in the Password box, then re-typed as indicated in the Confirm Password box, click [Submit] as needed to save this change.


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6.5.4.2.2 Management | SNMP Page

Figure 6-3. Management | SNMP page

The ‘Management | SNMP’ page (Figure 6-3) sets and returns administration information for the CDM-740 Simple Network Management Protocol (SNMP) feature.

The Administrator can assign the following attributes:

• One SNMP Trap Destination IP Address.

Once the desired IP address has been entered, click [Submit] to save this change.

• A SNMP Read Community string. The factory default for this parameter is public. The SNMP Read Community string field can be any combination of characters and a length of 4 - 15 characters.

Once the desired SNMP Read Community string has been entered, click [Submit] to save this change.

• A SNMP Write Community string. The factory default for this parameter is private. The SNMP Read Community string field can be any combination of characters and a length of 4 - 15 characters.

Once the desired SNMP Write Community string has been entered, click [Submit] to save this change.

For details pertaining to the configuration parameters available on this page, refer to Chapter 5. FRONT PANEL OPERATION and Sect. 6.3 SNMP INTERFACE.


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6.5.4.2.3 Management | FAST Page

Figure 6-4. Management | FAST page

The ‘Management | FAST’ page (Figure 6-4) is a read-only page providing the summary status of all available and/or installed Fully Accessible System Topology (FAST) operational features.

For more information on FAST, refer to the following sections in this manual:

• For an overview on FAST, see Sect. 1.3.10 in Chapter 1. INTRODUCTION.

• For details on activating FAST features via the CDM-740 front panel, refer to Sect. 5.10 in Chapter 5. FRONT PANEL OPERATION and Appendix B. FAST ACTIVATION FEATURE.


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6.5.4.2.4 Management | Firmware Page

Figure 6-5. Management | Firmware page

The ‘Management | FAST’ page (Figure 6-5) permits the user to view information about the CDM-740 internal firmware.

Slot Information This read-only section identifies the two available firmware configurations. Firmware name, version, release date, file size, and the assigned slot and operational status (i.e., Running = Yes or No) are all identified here.

Firmware Configuration The modem can store two complete firmware images, and the user can select which image will be loaded the next time the unit reboots.

Use the Boot From dropdown menu to select the firmware image as Latest, Slot 1, or Slot 2.

Once the desired firmware boot source has been selected, click [Submit] as needed to save this change.


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6.5.4.2.5 Management | Auto Logout Page

Figure 6-6. Management | Auto Logout page

The ‘Management | Auto Logout’ page (Figure 6-6) provides a security measure for safeguarding access to a previously logged-in unit.

Once configured, the active session will be terminated when no user activity occurs within the specified Auto Logout timeframe. A valid user name and password will then be required to open a new session with the CDM-740 Web Server Interface.

To configure the Auto Logout feature, enter a value of 1 – 15 minutes into the Logout Time box. Entering a value of 0 disables the Auto Logout feature. Once the desired setting has been entered, click [Submit] to save this change.


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6.5.4.3 Network Pages

The ‘Network’ pages are used to establish the communication parameters for the FE (Fast Ethernet) Management 10/100 BaseT interface port and the GE1/GE2 10/100/1000 BaseT Gigabit Ethernet traffic ports.

6.5.4.3.1 Network | FE Mgt Page

Figure 6-7. Network | FE Management page

The ‘Network | FE Mgt’ page (Figure 6-7) permits the user to configure the Fast Ethernet 10/100 BaseT Gigabit Ethernet Management Port.

MAC Address This parameter is read-only and cannot be changed.

IP Address / CIDR Mask Enter the IP Address CIDR (Classless Inter Domain Routing) Subnet mask using this box.

Gateway IP Enter the modem’s IP Gateway Address using this box.

Link Configuration Use the dropdown menu to select the line speed and duplex setting on the CDM-740’s FE (Fast Ethernet) interface. The available options are:

• Auto • 100 BaseT / Half Duplex • 1000 BaseT / Full Duplex • 10 BaseT / Full Duplex • 100 BaseT / Full Duplex • 10 BaseT / Half Duplex

Note: If the configuration of the port is unknown, then “Auto” is the recommended configuration.


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Negotiated Link Mode The read-only actual negotiated line speed and duplex setting for the FE (Fast Ethernet) interface is displayed here. The viewable settings are:

• 100 BaseT / Full Duplex • 100 BaseT / Half Duplex • 10 BaseT / Full Duplex • 10 BaseT / Half Duplex

Note: If the configuration of the port is unknown, then “Auto” is the designated configuration.

Management Gateway Port Use the dropdown menu to select the Management Gateway Port as LAN or WAN.

Once the desired configuration settings have been made on this page, click [Submit] as needed to save these changes.


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6.5.4.3.2 Network | GE-1 and GE-2 Pages

Figure 6-8. Network | GE-1 and GE-2 pages

The ‘Network | GE1’ and ‘Network | GE2’ pages (Figure 6-8) permit the user to configure the communication settings for the unit’s two 10/100/1000 BaseT Gigabit Ethernet traffic ports.

With the exception of the Management Gateway Port dropdown menu (which is not included on either of these pages), all page functionality is identical to that of the ‘Network | FE Mgt’ page. Refer back to Sect. 6.5.4.3.1 for instructions on using these pages.


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6.5.4.4 DEMOD (Demodulator) | Tuner-1 Page

Figure 6-9. DEMOD | Tuner-1 page

The ‘DEMOD | Tuner-1’ page (Figure 6-9) permits the user to configure CDM-740 demodulator operations. Note that, for any configuration item requiring text entry, a reference to the operational ranges for that field is provided to the right of that text box.

LNB Freq (MHz) Enter the operating frequency, in MHz, for the Low-Noise Block Downcoverter. The valid range is from 0 – 16000 MHz.

Rx Freq (MHz) Enter the modem’s Rx frequency, in MHz. The valid range is from 950 – 2150 MHz.

Symbol Rate (ksps) Enter the modem’s symbol rate, in ksps. The valid range is from 1000 – 62000 ksps.

Data Rate (kbps) read-only This is a status-only section that displays the current data rate, in kbps, as derived from the selected MODCOD parameter.

MODCOD Use the dropdown menu to select the Demodulation type and FEC rate (MODCOD).


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Selections are as follows:

• Auto • DVB-S2 QPSK 3/4 • DVB-S2 16-APSK 2/3 • DVB-S QPSK 1/2 • DVB-S2 QPSK 5/6 • DVB-S2 16-APSK 3/4 • DVB-S QPSK 2/3 • DVB-S2 QPSK 8/9 • DVB-S2 16-APSK 5/6 • DVB-S QPSK 3/4 • DVB-S2 QPSK 9/10 • DVB-S2 16-APSK 8/9 • DVB-S QPSK 5/6 • DVB-S2 8-PSK 3/5 • DVB-S2 16-APSK 9/10 • DVB-S QPSK 7/8 • DVB-S2 8-PSK 2/3 • DVB-S2 32-APSK 3/5 • DVB-S2 QPSK 1/4 • DVB-S2 8-PSK 3/4 • DVB-S2 32-APSK 2/3 • DVB-S2 QPSK 1/3 • DVB-S2 8-PSK 5/6 • DVB-S2 32-APSK 3/4 • DVB-S2 QPSK 1/2 • DVB-S2 8-PSK 8/9 • DVB-S2 32-APSK 5/6 • DVB-S2 QPSK 3/5 • DVB-S2 8-PSK 9/10 • DVB-S2 32-APSK 8/9 • DVB-S2 QPSK 2/3 • DVB-S2 16-APSK 3/5 • DVB-S2 32-APSK 9/10

Frame (S2 Only) Active only for DVB-S2 Mode, use the dropdown menu to select the Framing type as either Normal or Short.

Pilots (S2 Only) Active only for DVB-S2 Mode, use the dropdown menu to select the Pilots as either Off or On.

Gold Code (S2 Only) Active only for DVB-S2 Mode, the Gold-n Index descrambling code indicates the Physical Layer spreading sequence number. The valid range can be set from 0 to 262141. The default setting is all 0s.

Roll Off Active only for DVB-S2 mode, the Rx Alpha Rolloff (α) dictates how fast the spectral edges of the carrier are attenuated beyond the 3 dB bandwidth. With 20% rolloff the edge falls off more quickly than with 25% and 35%.

Use the dropdown menu to set the expected filter Rx Alpha Rolloff (α) of the carrier as 20%, 25%, or 35%. The default selection is 20%.

Note: This menu is not valid in DVB-S mode, where the Rx Alpha Rolloff (α) is fixed at 35%.

Spectral Inversion Use the dropdown menu to select the Spectral Inversion as either Off or On.

Polarity To set the polarity for the downconversion mix in the LNB, use the dropdown menu to select the Polarity as Off, Horizontal (18V), or Vertical (13V).

22 KHz LNB Tone To set the 22KHz tone outbound from the L-Band connector per DiSEq 4.2, use the dropdown menu to select the tone as either Off or On.

Once the desired configuration settings have been made on this page, click [Submit] as needed to save these changes.


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6.5.4.5 DECAP (Decapsulator) | Tuner-1 Page

Figure 6-10. Decapsulator | Tuner-1 page

The ‘DECAP | Tuner-1’ page (Figure 6-10) permits the user to configure CDM-740 decapsulator operations.

Current Routes – Tuner 1 This section permits the user to view, modify, or delete previously-created Rx Routes. Information is tabulated as follows:

ID: The route is numbered in the order it was created (e.g., 1, 2, 3…). Up to 64 simultaneous PIDs may be created using this page.

Action – To modify an existing entry, the user may edit the PID (Hex) or select Eth Out as GE-1 or GE-2. (MPE/IP is the sole interface Type available, and therefore is not changeable.)

• Type: Presently, MPE/IP is the sole available interface mode.

• PID (Hex): The name of the PID, in hexadecimal format ranging from 0x10 to 0x1FFE, may be viewed or edited here.

• Eth Out: The port to be used when routing the Transport Stream over Ethernet IP is selectable, using the dropdown menu as GE1 or GE2.

Once changes are made to the selected route ID entry, click on the Page icon to update this entry. At the prompt, click [OK] to submit or [Cancel] to reject the edits made to this specific route ID entry:

To delete an existing entry, click on the Delete icon. At the prompt, click [OK] to delete or [Cancel] to retain this specific route ID entry.


6–19

Add PID This section permits the user to create Rx Routes. A configured PID value, in hexadecimal format, is required for MPE/IP data to be extracted from the transport stream and sent to the CDM-740 CPU. Once a valid PID value is configured and data is found on a transport stream, the data is decapsulated and delivered to the traffic port.

Type: Presently, MPE/IP is the sole available interface mode. PID (Hex): Enter a valid PID, in hexadecimal format ranging from 0x10 to 0x1FFE, in this box. Entering 0x1FFF disables the entry. (Note: This PID value cannot be used or defined elsewhere on the CDM-740 for carrying user data traffic.) Eth Out: Use the dropdown menu to select GE1 or GE2 as the port to be used when routing the Transport Stream over Ethernet IP. Once the PID has been defined, click [Add Rx Route] to finish.


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6.5.4.6 MOD (Modulator) Page

Figure 6-11. Modulator page

The ‘MOD’ page (Figure 6-11) permits the user to configure CDM-740 modulator operations. Note that, for any configuration item requiring text entry, a reference to the operational ranges for that field is provided to the right of that text box.

Modulator Section

Tx Freq (MHz) Enter the modem’s Tx frequency, in MHz. The valid ranges are from 50 – 180 MHz (70/140 MHz) and 950 – 2150 MHz (L-Band).

Tx Interface Type Presently, IP is the sole available Tx Interface type.

Tx FEC Type Presently, TPC (Turbo Product Codec) is the sole available FEC type.

Tx Modulation Type Use the dropdown menu to select QPSK, 8-QAM, or 16-QAM.


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Tx FEC Code Rate Use the dropdown menu to select the available Tx FEC Code Rate as 1/2, 3/4, 7/8, or 0.95.

Tx Scrambler Use the dropdown menu to select the Tx Scrambler as Off, Normal, or IESS-315.

Tx Spectrum Invert Use the dropdown menu to select the Tx Spectrum Invert as Normal or Tx Spectrum Inverted.

Tx Power Level (dBm) Enter the modem’s Tx power level, in dBm. The valid ranges are from –50 to –5 dBm.

Tx Carrier State Use the dropdown menu to select the Tx Carrier State as either Off or On. Once the desired configuration settings have been made in this section, click [Submit] as needed to save these changes.

Tx Data Rate (kbps) Enter the modem’s Tx Data Rate, in kbps. The valid ranges are from 16 – 9980 kbps.

Once the desired Tx Data Rate has been set, click [Submit] as needed to save this change.

Tx Symbol Rate (kSymbols) Enter the modem’s Tx Symbol Rate, in ksps. The valid ranges are from 16 – 3000 ksps.

Once the desired Tx Symbol Rate has been set, click [Submit] as needed to save this change.

Tx Test Mode Use the dropdown menu to select the Tx Test Mode as Normal Mode, Tx CW, or Tx Alt 1/0.

Tx Bert State Use the dropdown menu to select the Tx Bert State as either Off or On.

Tx Bert Pattern Use the dropdown menu to select the Tx Bert Pattern as either 2^23-1 or 2047.

Monitor Port Use the dropdown menu to set Monitor Port operation as either Off or On. Once the desired configuration settings have been made in this section, click [Submit] as needed to save these changes.


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BUC Section

BUC LO Freq (MHz) Enter the BUC’s lockout frequency, in MHz. The valid LO range is 3000 to 65000 MHz.

BUC Power Enable Use the dropdown menu to select the BUC Power Enable as either Off or On.

BUC Output Power Enable Use the dropdown menu to select the BUC Output Power Enable as either Off or On.

BUC 10 MHz Reference Enable Use the dropdown menu to select the BUC 10 MHz Reference Enable as either Off or On.

BUC Low Current Limit (mA) Enter the BUC’s low current alarm limit in mA. The valid low current limit range is from 0 – 4000 mA, in 100mA increments.

BUC High Current Limit (mA) Enter the BUC’s low current alarm limit in mA. The valid high current limit range is from 0 – 4000 mA, in 100mA increments. Once the desired configuration settings have been made in this section, click [Submit] as needed to save these changes.

Actual BUC Voltage (V) read-only Actual BUC Current (mA) read-only BUC power supply voltage and current information is continuously monitored and is provided here on a read-only basis. Click [Refresh] to update these readings.


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6.5.4.7 Statistics Pages

The pages available under the ‘Statistics’ tab provide the user access to status and operational statistics windows for the Modulator, the Tuner, and the Ethernet traffic ports.

6.5.4.7.1 Statistics | Summary Page

Figure 6-12. Statistics | Summary page

The ‘Statistics | Summary’ page (Figure 6-12) provides the user with read-only, abridged status windows pertaining to the basic operational statistics for the Modulator, Tuner, and Gigabit Ethernet traffic ports.

Refer to the individual page outlines that follow for a rundown of the terminologies employed in each statistics table.

Click [Clear All Stats] to delete all existing entries from the Summary Statistics page.


6–24

6.5.4.7.2 Statistics | Tuner-1 Page

Figure 6-13. Statistics | Tuner-1 page

The ‘Statistics | Tuner-1’ page (Figure 6-13) provides the user with a read-only status windows pertaining to the active operational statistics for Tuner-1 and active PIDs.

Unless noted otherwise, information is provided in each table as follows:

PID (PID Statistics table only): Identifies the user-configured PID. Eth (PID Statistics table only): Identifies the Ethernet Interface ID (Port 1 or 2) associated with each user-configured PID. Pkts Rx: Packets received. UC Pkts Rx: Unicast packets received. MC Pkts Rx: Multicast packets received. Pkts Dropped: Packets dropped. UC Pkts Dropped: Unicast packets dropped. MC Pkts Dropped: Multicast packets dropped. Current (Mbps): Most recent symbol rate (in megabits per second). Maximum (Mbps): Peak symbol rate (in megabits per second).

Click [Clear Tuner 1 Stats] to delete all existing entries from the Tuner-1 Statistics page.


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6.5.4.7.3 Statistics | GE-1 and GE-2 Pages

Figure 6-14. Statistics | GE-1 and GE-2 pages

The ‘Statistics | GE-1’ and ‘Statistics | GE-2’ pages (Figure 6-14) provide the user with read-only status windows pertaining to the aggregate operational statistics for the unit’s two 10/100/1000 BaseT Gigabit Ethernet traffic ports.

Information is provided on each page as follows:

Total Pkts Tx: Total number of packets transmitted. Total Pkts Rx: Total number of packets received. UC Pkts Tx: Unicast packets transmitted. UC Pkts Rx: Unicast packets received. MC Pkts Tx: Multicast packets transmitted. MC Pkts Rx: Multicast packets received.


6–26

Current Tx (Mbps): Most recent transmitted data rate (in megabits per second). Current Rx (Mbps): Most recently received data rate (in megabits per second). Maximum Tx (Mbps): Peak transmitted data rate (in megabits per second). Maximum Rx (Mbps): Peak received data rate (in megabits per second).

Click [Clear GigE Stats] to delete all existing entries from the GE1 or GE2 Statistics page.

6.5.4.7.4 Statistics | Modulator Page

Figure 6-15. Statistics | Modulator page

The ‘Statistics | Modulator’ page (Figure 6-15) provides the user with a read-only status windows pertaining to the active operational statistics for the modulator.

Unless noted otherwise, information is provided in each table as follows:

Pkts Tx: Packets transmitted. UC Pkts Tx: Unicast packets transmitted. MC Pkts Tx: Multicast packets transmitted. Pkts Dropped: Packets dropped. UC Pkts Dropped: Unicast packets dropped. MC Pkts Dropped: Multicast packets dropped. Current (Mbps): Most recent symbol rate (in megabits per second). Maximum (Mbps): Peak symbol rate (in megabits per second).

Click [Clear MOD Stats] to delete all existing entries from the Modulator Statistics page.


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6.5.4.8 Monitor Page

Figure 6-16. Monitor page

The ‘Monitor’ page (Figure 6-16) provides a read-only window that displays any events and alarms as logged by the unit during normal operation.

As each event or alarm is logged, it is date- and time-stamped. A description for each entry follows.

Click [Clear Event Table] to delete all existing log entries from the Modem Events Log. The log is then reset to one (1) entry: “Info: Log Cleared”.

For details pertaining to the information provided on this page, refer to Chapter 5. FRONT PANEL OPERATION.


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6.5.4.9 Utility Page

Figure 6-17. Utility page

The ‘Utility’ page (Figure 6-16) provides the user with the means to load or save a modem configuration, and control operation of the CDM-740 as part of a 1:1 Redundancy setup.

Save / Load Configuration This section allows the user to save, then load (recall) up to 10 configuration sets.

To save a configuration set: After all configuration parameters have been adjusted to suit, use the top (Save) Select Location dropdown to select 0 through 9, then click [Save Configuration] as needed to store the specified configuration settings.

To load (recall) a configuration set: Use the bottom (Load) Select Location dropdown to select 0 through 9, then click [Load Configuration] as needed to recall the selected configuration settings.

Redundancy The CDM-740, when connected to a Comtech EF Data CRS-175L 1:1 L-Band Redundancy Switch, provides fully-automatic protection of IP packet traffic in the case of equipment failure.

Current Redundancy State: Use the dropdown menu to set the status as Online or Offline.

Click [Force Redundancy Switch] to force the unit to toggle the Unit Fail relay to the “fail” state for approx 500ms. If the unit is a 1:1 pair, and it is currently the ‘Online’ unit, this will force


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a switchover, so the unit will then be in ‘Standby’ mode. The command is always executed by the unit, regardless of whether it is stand-alone, or in a 1:1 pair.

Tuner 1 Constellation The Utility page provides access to a demodulator constellation for the Tuner-1 I&Q. This is a live representation of what the demodulator is currently processing.


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Notes:

A–1

Appendix A. REMOTE CONTROL

A.1 Overview

This appendix describes the protocol and message command set for remote monitor and control (M&C) of the CDM-740 Satellite Modem.

The electrical interface is an EIA-232 connection (for the control of a single device), and data is transmitted in asynchronous serial form, using ASCII characters. Control and status information is transmitted in packets, of variable length, in accordance with the structure and protocol defined in later sections.

A.2 EIA-232

This is a configuration in which the ‘Controller’ device is connected directly to the ‘Target’ device via a two-wire-plus-ground connection. Controller-to-Target data is carried, via EIA-232 electrical levels, on one conductor, and Target-to-Controller data is carried in the other direction on the other conductor.

A.3 Basic Protocol

All data is transmitted as asynchronous serial characters, suitable for transmission and reception by a UART. The character format should be 8N1 (eight data bits, no parity, one stop bit). The baud rate may vary between 1200 and 38400 baud.

All data is transmitted in framed packets. The Controller is assumed to be a PC or ASCII dumb terminal, which is in charge of the process of monitor and control. The Controller is the only device that is permitted to initiate, at will, the transmission of data. Targets are only permitted to transmit when they have been specifically instructed to do so by the Controller.

All bytes within a packet are printable ASCII characters, less than ASCII code 127. In this context, the Carriage Return and Line Feed characters are considered printable.

With one exception, all messages from Controller-to-Target require a response – this will be either to return data that has been requested by the Controller, or to acknowledge reception of an instruction to change the configuration of the Target. The exception to this is when the Controller broadcasts a message (such as Set time/date) using Address 0, when the Target is set to EIA-485 mode.

CDM-740 Advanced Satellite Modem Revision 0 Remote Control MN-CDM740

A–2

A.4 Packet Structure

Controller-to-TargetStart of Packet

Target Address

Address De-limiter

Instruction Code

Code Qualifier

Optional Arguments

End of Packet

< ASCII code

60

(1 character)

(4 characters)

/ ASCII code

47

(1 character)

(3 characters)

= or ? ASCII codes

61 or 63

(1 character)

(n characters)

Carriage ReturnASCII code 13

(1 character)

Example: <0000/RSH=30[cr] Target-to-Controller

Start of Packet

Target Address

Address De-limiter

Instruction Code

Code Qualifier

Optional Arguments

End of Packet

> ASCII code

62

(1 character) (4 characters)

/ ASCII code

47

(1 character) (3 characters)

=, ?, !, or * ASCII codes 61,63,33 or

42

(1 character) (From 0 to n characters)

Carriage Return,Line Feed

ASCII codes 13,10

(2 characters)

Example: >0000/BBU=107[cr][lf]

A.4.1 Start of Packet

Controller-to-Target: This is the character '<' (ASCII code 60).

Target-to-Controller: This is the character '>' (ASCII code 62).

Because this is used to provide a reliable indication of the start of packet, these two characters may not appear anywhere else within the body of the message.

A.4.2 Target Address

Up to 9,999 devices can be uniquely addressed. In EIA-232 applications this value is set to 0.

IMPORTANT

The Controller sends a packet with the address of a Target – the destination of the packet. When the Target responds, the address used is the same address, to indicate to the Controller the source of the packet. The Controller does not have its own address.

A.4.3 Address Delimiter

This is the character ‘/’ (forward slash) (ASCII code 47).

A.4.4 Instruction Code

This is a three-character alphabetic sequence that identifies the subject of the message. Wherever possible, the instruction codes have been chosen to have some significance. For Example: TFQ for Tx FreQuency; RMD for Rx MoDulation type, etc. This aids in the readability of the


A–3

message, should it be displayed in its raw ASCII form. Only upper case alphabetic characters may be used (A-Z, ASCII codes 65 - 90).

A.4.5 Instruction Code Qualifier

This single character further qualifies the preceding instruction code. Code Qualifiers obey the following rules:

1. From Controller-to-Target, the only permitted values are:

= (ASCII code 61

The = code is used as the assignment operator, and is used to indicate that the parameter defined by the preceding byte should be set to the value of the argument(s) that follow it. For example: In a message from Controller-to-Target, TFQ=0070.0000 would mean ‘set the Transmit frequency to 70 MHz’.

? (ASCII code 63)

The ? code is used as the query operator, and is used to indicate that the Target should return the current value of the parameter defined by the preceding byte. For example: In a message from Controller-to-Target, TFQ? would mean ‘return the current value of the transmit frequency’.

2. From Target-to-Controller, the only permitted values are:

= (ASCII code 61)

The = code is used in two ways: First, if the Controller has sent a query code to a Target (for example: TFQ?, meaning ‘what is the Transmit frequency?’), the Target would respond with TFQ=xxxx.xxxx, where xxxx.xxxx represents the frequency in question. Second, if the Controller sends an instruction to set a parameter to a particular value, then, providing the value sent in the argument is valid, the Target will acknowledge the message by replying with TFQ= (with no message Arguments).

? (ASCII code 63)

The ? code is only used as follows: If the Controller sends an instruction to set a parameter to a particular value, then, if the value sent in the argument is not valid, the Target will acknowledge the message by replying, for example, with TFQ? (with no message Arguments). This indicates that there was an error in the message sent by the Controller.

! (ASCII code 33)

The ! code is only used as follows: If the Controller sends an instruction code which the Target does not recognize, the Target will acknowledge the message by echoing the invalid instruction, followed by the ! character. Example: XYZ!

* (ASCII code 42)

The * code is only used as follows: If the Controller sends an instruction to set a parameter to a particular value, then, if the value sent in the argument is valid, BUT the modem will not permit that particular parameter to be changed at that time, the Target will acknowledge the message by replying, for example, with TFQ* (with no message Arguments).

# (ASCII code 35)

The # code is only used as follows: If the Controller sends a correctly formatted command, BUT the modem is not in remote mode, it will not allow reconfiguration, and will respond with TFQ#.


A–4

∼ (ASCII Code 126)

The ∼ code is only used as follows: If a message was sent via a local modem to a distant end device or ODU, the message was transmitted transparently through the local modem. In the event of the distant-end device not responding, the local modem would generate a response. Example: 0001/RET~, indicating that it had finished waiting for a response and was now ready for further comms.

A.4.6 Optional Message Arguments

Arguments are not required for all messages. Arguments are ASCII codes for the characters 0 to 9 (ASCII codes 48 to 57); period (ASCII code 46); and comma (ASCII code 44).

A.4.7 End of Packet

Controller-to-Target: This is the 'Carriage Return' character (ASCII code 13).

Target-to-Controller: This is the two-character sequence 'Carriage Return' (ASCII code 13), and 'Line Feed' (ASCII code 10).

Both indicate the valid termination of a packet.


A–5

A.5 Remote Commands and Queries Column ‘C’ = Command; Column ‘Q’ = Query; columns marked ‘X’ designate instruction code as Command only, Query only, or Command/Query.

Index Notes: Where annotation reads XIP = Only in IP-ACM mode – see command summary for details

CODE C Q PAGE CODE C Q PAGE CODE C Q PAGE CODE C Q PAGE CODE C Q PAGE ADJ X X A-12 FLT X A-21 MAC X A-15 SBS X X A-17 TBP X X A-18 ALO X X A-12 FM1 X X A-13 MG1 X A-15 SL1 X A-22 TCR X X A-7 AU1 X X A-12 FRW X A-19 MG2 X A-15 SM1 X X A-17 TDR X X A-7

FSW X A-22 MGP X X A-16 SNO X A-19 TFQ X X A-7 MLC X X A-16 SRC X X A-17 TFT X X A-6

BCH X X A-23 MOP X X A-22 SSC X X A-17 TIM X X A-18 BCL X X A-23 GG1 X X A-13 SSL X X A-18 TIT X X A-6 BDC X A-23 GG2 X X A-13 SSN X X A-18 TLO X X A-7 BDV X A-23 STA X X A-18 TMD X X A-6 BE1 X A-21 NPS X A-16 SWC X X A-18 TMP X A-22 BFR X X A-23 IEP X A-13 NUE X A-16 SWR X A-19 TPL X X A-8 BPS X X A-23 IG1 X X A-14 TSC X X A-8 BTX X X A-12 IG2 X X A-14 TSI X X A-8

IMG X A-14 TSR X A-7 IPA X X A-14 RA1 X X A-9 TST X X A-18

CAE X A-12 IPG X X A-15 RC1 X X A-10 TTF X A-8 CID X X A-12 RD1 X X A-16 TXO X X A-8 CLD X A-19 RED X A-22 CST X A-19 LC1 X X A-15 RF1 X X A-9

LC2 X X A-15 RG1 X X A-11 LP1 X X A-9 RL1 X X A-9

DAY X X A-12 LRS X X A-15 RM1 X X A-11 LT1 X X A-9 RNE X A-17 RP1 X X A-11

EFR X X A-13 RS1 X X A-11 EID X A-20 RT1 X X A-11 ES1 X A-21

Note – In the tables that follow, the following codes are used in the ‘Response to Command’ column:

= Message ok # Message ok, but unit is not in Remote mode. ? Received ok, but invalid arguments were found ~ Time out of a pass-through message, either to via EDMAC or to a local ODU * Message ok, but not permitted in current mode


A–6

A.5.1 Tx Parameters

Priority System: TIT (Highest priority), TFT, TMD, TCR, TDR, and TSR (Lowest Priority), indicated by shading.

Any change to a higher priority parameter can override any of the parameters of lower priority.

Parameter Type

Command (Instruction & Qualifier)

Number of Arguments Description of Arguments Response to

Command Query

(Instruction & Qualifier)

Response to Query

Tx Interface Type

TIT= 1 byte, value of 0 thru 9, or A

Command or Query. Tx Interface Type, where:

0 = IP 1 = Reserved

Example: TIT=1 (selects IP)

TIT= TIT? TIT* TIT#

TIT? TIT=x (see Description of Arguments)

Tx FEC Type TFT= 1 byte, value of 0 thru xx

Command or Query. Tx FEC coding type, where:

0=TPC (aka Turbo)

Example: TFT=0 (selects Turbo)

TFT= TFT? TFT* TFT#

TFT? TFT=x (see Description of Arguments)

Tx Modulation Type

TMD= 1 byte, value of 0 thru 3

Command or Query. Tx Modulation type, where:

0=reserved 1=QPSK 2=8-QAM 3=16-QAM

Depending on FEC type, not all of these selections will be valid. The following code rate/mod type combinations are supported: Rate 1/2 QPSK Rate 3/4 QPSK/8-QAM/16-QAM Rate 7/8 QPSK/8-QAM/16-QAM Rate 0.95 QPSK/8-QAM

Example: TMD=3 (selects 8-QAM)

TMD= TMD? TMD* TMD#

TMD? TMD=x (see Description of Arguments)


A–7

Parameter Type



Command Query


Response to Query

Tx FEC Code Rate

TCR=

1 byte, value of 0 thru 4

Command or Query. Tx FEC Code Rate, where:

0=reserved 1=Rate 1/2 2=Rate 3/4 3=Rate 7/8 4=Rate 0.95

The following code rate/mod type combinations are supported: Rate 1/2 BPSK/QPSK Rate 3/4 QPSK/8-QAM/16-QAM Rate 7/8 QPSK/8-QAM/16-QAM Rate 0.95 QPSK/8-QAM

Example: TCR=3 (selects Rate 3/4)

TCR= TCR? TCR* TCR#

TCR?

TCR=x (see Description of Arguments)

Tx Data Rate TDR= 10 bytes Command or Query. Tx Data Rate in the form dddddd.ddd where:

dddddd.ddd = Tx Data Rate in kbps, between 16 kbps and 9.98 Mbps Resolution=1 bps Example: TDR=002047.999 (sets TX Data Rate as 2047.999 kbps)

TDR= TDR? TDR* TDR#

TDR? TDR=xxxxxx.xxx (see Description of Arguments)

Tx Symbol Rate

N/A 10 bytes, numeric

Query only. Tx Symbol Rate in the form dddddd.ddd where:

ddddd.ddd = Tx Symbol Rate in ksps

TSR? TSR= TSR* TSR#

TSR? TSR=dddddd.ddd (see Description of Arguments)

Tx Frequency TFQ= 9 bytes

Command or Query. Frequency ranges: 50.0000 MHz to 180.0000 MHz and 950.0000 MHz to 2150.0000 MHz (L-band) Resolution=100Hz. Example: TFQ=0950.9872

TFQ= TFQ? TFQ* TFQ#

TFQ? TFQ=xxxx.xxxx

Tx LO TLO= 6 bytes Command or Query. Tx LO frequency information in the form xxxxxs, where: xxxxx = the LO frequency, 3000 through 65000 MHz, or 00000 = OFF Note: Terminal Frequency = Tx LO _+/- Tx Frequency

TLO= TLO? TLO* TLO#

TLO? TLO=xxxxxs (see Descriptions of Arguments)


A–8

Parameter Type



Command Query


Response to Query

Tx Power Level

TPL= 4 bytes Command or Query. Tx Power Level in the form sxx.x, where:

s = sign [– (negative) or + (positive)] xx.x: power value

Tx Output power level for 950 to 1950MHz range is between -5 and -40 dBm. Tx Output power level for 50 to 180MHz range is between -5 and -25 dBm. Example: TPL=-13.4

TPL= TPL? TPL* TPL#

TPL?

TPL=sxx.x (see Description of Arguments)

Tx Scrambler TSC= 1 byte, 0, 1 or 2 Command or Query. Tx Scrambler state, where:

0=Off 1=Normal (default) 2=IESS-315 when in Turbo mode

Example: TSC=2 (Scrambler On)

TSC= TSC? TSC* TSC#

TSC? TSC=x (see Description of Arguments)

Tx Spectrum Invert

TSI= 1 byte, 0 or 1 Command or Query. Tx Spectrum Invert selection, where:

0=Normal 1=Tx Spectrum Inverted

Example:TSI=1 (which is normal)

TSI= TSI? TSI* TSI#

TSI? TSI=x (see Description of Arguments)

Tx Satellite (Terminal) Frequency

N/A 10 bytes Query only. Terminal (aka satellite) Tx Frequency, which is the frequency transmitted to the satellite. Resolution=100 Hz Returns 00000.0000 if LO is zero Example: TTF=11650.2249

N/A TTF? TTF=xxxxx.xxxx (see Description of Arguments)

Tx Carrier State

TXO= 1 byte, value of 0 thru 1

Command or Query. Tx Carrier State, where:

0=OFF due to front panel or remote control command 1=ON

Example: TXO=1 (Tx Carrier ON)

TXO= TXO? TXO* TXO#

TXO? TXO=x (see Description of Arguments)


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A.5.2 Rx Parameters

Priority System: RF1 (Highest priority) and RL1 (Lowest Priority), indicated by shading. Any change to a higher priority parameter can override any of the parameters of lower priority.

Parameter Type



Command Query


Response to Query

Rx 1 Frequency

RF1= 9 bytes

Command or Query. Rx Terminal Frequency, the frequency (MHz) being received from the satellite, in the form xxxxx.xxx. where:

xxxxx.xxx = 950.000 MHz to 65000.000 MHz (L-band) Resolution=1kHz. Examples: If RX 1 LO is 00000, then the Rx 1 Frequency is entered as L-Band direct – 950.000 to 2150.000; If RX 1 LO is set in the range of 30000 to 65000, the Rx 1 Frequency is +/- the Rx 1 LO, and this will be the resulting L-Band frequency the modem will expect to receive.

RF1= RF1? RF1* RF1#

RF1? RF1=xxxxx.xxx (see Description of Arguments)

Rx 1 LO RL1= 6 Bytes Command or Query. LNB Rx LO frequency information in MHz, in the form xxxxxs, where:

xxxxx = LO Frequency ranges 03000 through 65000 MHz,or 00000 = (Off) s = sign for the MIX [– (negative) or + (positive)]

Notes: 1. Negative mix induces a spectral inversion. 2. Actual RX Frequency = RX 1 Frequency +/- modem Rx 1 LO

RL1= RL1? RL1* RL1#

RL1? RL1=xxxxxs (see Description of Arguments)

Rx 1 Polarity LP1=

1 byte Command or Query. Rx 1 Tuner Polarity, where

0=Off 1=Horizontal (18V) 2=Vertical (13V)

LP1= LP1? LP1* LP1#

LP1?

LP1=x (see Description of Arguments)

Rx 1 LNB 22 KHz Tone

LT1= 1 bytes, 0 or 1 Command or Query. Rx 1 LNB 22KHz Tone, where:

0=Off 1=On

Example: LT1=1 (LNB 22Hz Tone is On)

LT1= LT1? LT1* LT1#

LT1? LT1=x (see Description of Arguments)

Rx 1 Alpha Rolloff

RA1= 1 byte, 0, 1 or 2 Command or Query. Rx Alpha Rolloff, where:

0 = 20% 1 = 25% 2 = 35%

Example: RA1=1 (sets Rx Alpha Rolloff of 20%)

RA1= RA1? RA1* RA1#

RA1? RA1=x


A–10

Parameter Type



Command Query


Response to Query

Rx 1 MODCOD

RC1= 2 byte, value of 0 to 31

Command or Query. Rx Demodulation all , where:

0=QPSK 1/4 1=QPSK 1/3 2=QPSK 2/5 3=QPSK 1/2 4=QPSK 3/5 5=QPSK 2/3 6=QPSK 3/4 7=QPSK 4/5 8=QPSK 5/6 9=QPSK 8/9 10=QPSK 9/10 11=8PSK 3/5 12=8PSK 2/3 13=8PSK 3/4 14=8PSK 5/6 15=8PSK 8/9 16=8PSK 9/10 17=16-APSK 2/3 18=16-APSK 3/4 19=16-APSK 4/5 20=16-APSK 5/6 21=16-APSK 8/9 22=16-APSK 9/10 23=32-APSK 3/4 24=32-APSK 4/5 25=32-APSK 5/6 26=32-APSK 8/9 27=32-APSK 9/10 28=reserved 29=reserved 30=reserved 31=Auto 32=DVB-S QPSK 1/2 33=DVB-S QPSK 2/3 34=DVB-S QPSK 3/4 35=DVB-S QPSK 5/6 36=DVB-S QPSK 7/8

All other codes are invalid. Example: RC1=6 (selects QPSK 3/4)

RC1= RC1? RC1* RC1#

RC1? RC1=xx (see Description of Arguments)


A–11

Parameter Type



Command Query


Response to Query

Rx 1 Gold Code Sequence Index

RG1= 6 bytes Command or Query. Note: Only valid in DVB-S2 mode. Rx 1 Gold Code Sequence Index in the form xxxxxx, where:

xxxxxx = Gold Code Sequence index ( 0 to 262141 ) Example: RG1=189063

RG1= RG1? RG1* RG1#

RG1? RG1=xxxxxx

Rx 1 Framing Mode

RM1= 1 byte, value of 0 thru 2

Command or Query. Rx Framing mode, where:

0=Normal 1=Short

Example: RM1=1 (selects Short framing mode)

RM1= RM1? RM1* RM1#

RM1? RM1=x (see Description of Arguments)

Rx 1 Pilot RP1= 1 byte, 0, 1 or 2 Command or Query. Rx Pilot selection, where:

0=Off 1=On

Example: RP1=1 (Pilot selection is ON/automatic)

RP1= RP1? RP1* RP1#

RP1? RP1=x

Rx 1 Symbol Rate

RS1= 10 bytes, numeric

Command or Query. Rx 1 Symbol Rate in the form dddddd, where:

dddddd = The valid range from 1,000 to 62,000 ksps

RS1= RS1? RS1* RS1#

RS1? RS1=dddddd.ddd (see Description of Arguments)

Rx 1 Spectrum Invert

RT1= 1 byte, 0, 1 or 2 Command or Query. Rx Spectrum Invert, where:

0=Off 1=On

Example: RT1=1 (Spectrum Invert is ON)

RT1= RT1? RT1* RT1#

RT1? RT1=x (see Description of Arguments)


A–12

A.5.3 Unit Parameters

Parameter Type



Command Query


Response to Query

Adjustment for Internal 10MHz High- stability Reference

ADJ= 4 bytes, numeric Command or Query. Provides fine adjustment of the Internal 10MHz Reference on the High-Stability Frequency Reference module in the form sddd, where:

s= sign [– (negative) or + (positive)] ddd= value, 0-999.

ADJ= ADJ? ADJ* ADJ#

ADJ? ADJ=sddd (see Description of Arguments)

Auto Logout ALO= 2 bytes, 0 to 15 Command or Query. Number of minutes before user interfaces automatically log out, where:

xx = 0 to 15 minutes A value of 0 means the feature is disabled and the interface never logs out.

ALU= ALO? ALO* ALO#

ALO? ALO=x (see Description of Arguments)

Rx 1 Allow Unicast

AU1= 1 byte, value 0 or 1

Command or Query. Selects whether the CDM-740 allows unicast traffic from the Rx 1 Tuner, where:

0=Off (default) 1=On

Example: AU1=1 (allow unicast traffic from Rx 1)

AU1= AU1? AU1* AU1#

AU1? AU1=x (see Description of Arguments)

Tx BERT State

BTX= 1 byte, value of 0 or 1

Command or Query. Tx BERT State, where

0=Off 1=On

Example: BTX=1 (Tx BERT On)

BTX= BTX? BTX#

BTX? BTX=x (see Description of Arguments)

Clear All Stored Events

CAE= None Command only. This command takes no arguments. Forces the software to clear the software events log. Example: CAE=

CAE= CAE? CAE* CAE#

N/A N/A

Circuit ID String

CID= 4 to 32 bytes Command or Query. Sets or returns the user-defined Circuit ID string, which is 4 to 32 characters in length. Valid characters include: Space ( ) * + – , . / 0 9 and A thru Z

CID= CID? CID* CID#

CID? CID=x (see Description of Arguments)

Modem Date DAY= 6 bytes Command or Query. A date in the form ddmmyy (international format), where:

dd = day of the month (01 to 31) mm = month (01 to 12) yy = year (00 to38)

Example: DAY=240425 (April 24, 2025)

DAY= DAY? DAY* DAY#

DAY? DAY=ddmmyy (see Description of Arguments)


A–13

Parameter Type



Command Query


Response to Query

External Frequency Reference

EFR=

1 byte, value of 0 thru 6

Command or Query. 0=Internal 10MHz (default) 1=External 1 MHz 2=External 2 MHz 3=External 5 MHz 4=External 10 MHz 5=Internal 10MHz plus output.

This means that the Reference is available on the “Ext Ref” rear connector (small rear-panel LED indicates when ON).

EFR= EFR? EFR* EFR#

EFR?

EFR=x (see Description of Arguments)

Rx 1 Filter on Sat MAC

FM1= 1 byte, value 0 or 1

Command or Query. When the Satellite MAC is defined, the CDM-740 only routes Unicast traffic that is specifically addressed to the Satellite MAC, where: 0=Off, do not filter on the Sat MAC (default) 1=On This value does not affect the processing of multicast packets. Example: FM1=1 (filter on the Satellite MAC)

FM1= FM1? FM1* FM1#

FM1? FM1=x (see Description of Arguments)

GE1 Gateway GG1= 15 bytes numerical

Command or Query. Sets the IP Gateway Address for the GE1 Ethernet port, with the format aaa.bbb.ccc.ddd. where:

(Permitted ranges – cannot all be zero) aaa = 0-223 bbb = 0-255 ccc = 0-255 ddd = 0-255

Example: CG1=010.006.030.001

GG1= GG1? GG1* GG1#

GG1? GG1=xxx.xxx.xxx.xxx (see Description of Arguments)

GE2 Gateway GG2= 15 bytes numerical

Command or Query. Sets the IP Gateway Address for the GE2 Ethernet port, with the format aaa.bbb.ccc.ddd. where:


Example: CG2=010.006.030.001.24

GG2= GG2? GG2* GG2#

GG2? GG2=xxx.xxx.xxx.xxx (see Description of Arguments)

Initialize the Stored Events Pointer

IEP= None Command only. Resets internal pointer to allow RNE? queries to start at the beginning of the stored events log.

IEP= IEP#

N/A N/A


A–14

Parameter Type



Command Query


Response to Query

GE1 Address IG1= 18 bytes numerical

Command or Query. Sets the IP Address and network prefix for the 10/100/1000 BaseT GE1 Ethernet port, in the form aaa.bbb.ccc.ddd.yy, where:

(Permitted ranges – cannot all be zero) aaa = 0-223 bbb = 0-255 ccc = 0-255 ddd = 0-255 yy = network prefix (range: 8 to 31)

Other restrictions: If aaa>191, prefix may not be less than 24. If aaa>127, prefix may not be less than 16. Example: IG1=010.006.030.001.24

IG1= IG1? IG1* IG1#

IG1? IG1=xxx.xxx.xxx.xxx.yy (see Description of Arguments)

GE2 Address IG2= 18 bytes numerical

Command or Query. Sets the IP Address and network prefix for the 10/100/1000 BaseT GE2 Ethernet port, in the form aaa.bbb.ccc.ddd.yy, where:


Other restrictions: If aaa>191, prefix may not be less than 24. If aaa>127, prefix may not be less than 16. Example: IG2=010.006.030.001.24

IG1= IG1? IG1* IG1#

IG2? IG2=xxx.xxx.xxx.xxx.yy (see Description of Arguments)

Current Software Image

IMG= 1 byte, value of 1 or 2

Query Only. Active software image, where: 1=Bulk Image #1 currently active 2=Bulk Image #2 currently active

IMG= IMG? IMG* IMG#

IMG? IMG=x (see Description of Arguments)

Management IP Address

IPA= 18 bytes numerical

Command or Query. Sets the IP Address and network prefix for the 10/100 Base T Ethernet management port, in the form aaa.bbb.ccc.ddd.yy, where:


Example: IPA=010.006.030.001.24

IPA= IPA? IPA* IPA#

IPA? IPA=xxx.xxx.xxx.xxx.yy (see Description of Arguments)


A–15

Parameter Type



Command Query


Response to Query

Management IP Gateway

IPG= 15 bytes numerical

Command or Query. Sets the IP Gateway Address for the Ethernet management port, in the form aaa.bbb.ccc.ddd, where:


Example: IPG=010.006.030.001.24

IPG= IPG? IPG* IPG#

IPG? IPG=xxx.xxx.xxx.xxx (see Description of Arguments)

GE1 Link Configuration

LC1= 1 byte, value 0 thru 5

Command or Query. GE1 Interface mode, where: 0=Auto Negoiate 1=1000Mbps -Full Duplex 2=100Mbps – Full Duplex 3=100Mbps – Half Duplex 4=10Mbps – Full Duplex 5=10Mbps – Half Duplex

LC1= LC1? LC1* LC1#

LC1? LC1=x (see Description of Arguments)

GE2 Link Configuration

LC2= 1 byte, value 0 thru 5

Command or Query. GE2 Interface mode, where: 0=Auto Negoiate 1=1000Mbps -Full Duplex 2=100Mbps – Full Duplex 3=100Mbps – Half Duplex 4=10Mbps – Full Duplex 5=10Mbps – Half Duplex

LC2= LC2? LC2* LC2#

LC2? LC2=x (see Description of Arguments)

Local/Remote Status

LRS= 1 byte, 0 to 3 Command or Query. Sets user’s Local/Remote status, where: 0=Local 1=Serial Remote Control 2=Ethernet Remote Control Example: LRS=1 (which is Serial Remote)

LRS= LRS? LRS* LRS#

LRS? LRS=x (see Description of Arguments)

Management MAC Address

N/A 12 bytes, alpha- numerical

Query only. Returns the unique MAC Address for the modem. Example: MAC=0006B00001C2

N/A MAC? MAC=aabbccddeeff (see Description of Arguments)

GE1 MAC Address


Query only. Returns the unique GE1 MAC Address. Example: MG1=0006B00001C2

N/A MG1? MG1=aabbccddeeff (see Description of Arguments)

GE2 MAC Address


Query only. Returns the unique GE2 MAC Address. Example: MG2=0006B00001C2

N/A MG2? MG2=aabbccddeeff (see Description of Arguments)


A–16

Parameter Type



Command Query


Response to Query

Management Gateway Port

MGP 1 byte, value 0 or 1

Command or Query. Selects which port management traffic should pass, where:

0 = WAN 1 = LAN

When the WAN port is seleted, all management traffic returns to the WAN port. When the LAN port is selected, all management traffic returns via the LAN port and uses the Management IP Gateway as needed. Example: MPR=1 (use LAN)

MGP= MGP? MGP* MGP#

MGP? MGP=x (see Description of Arguments)

Management Link Configuration

MLC= 1 byte, value 0 thru 5

Command or Query. Management Interface mode, where:

0=Auto Negoiate 1=1000Mbps -Full Duplex 2=100Mbps – Full Duplex 3=100Mbps – Half Duplex 4=10Mbps – Full Duplex 5=10Mbps – Half Duplex

MLC = MLC? MLC * MLC #

MLC ? MLC =x (see Description of Arguments)

Actual Negotiated Port Speed

N/A None Query only. Returns actual negotiated port speed in the form abcd, where:

a is GE 1 negotiated port speed. b is GE 2 negotiated port speed. c is the management port negotiated port speed.

a, b, c, d have the following values: 0 = Link down 1=100 Full 2=100 Half 3=10 Full 4=10 Half 5=1000 Full

N/A NPS? NPS=abc (see Description of Arguments)

Number of Unread stored Events

N/A 3 bytes Query only. Returns the Number of stored Events, which remain Unread (over remote control) in the form xxx (0-255). Example: NUE=126

N/A NUE? NUE=xxx (see Description of Arguments)

Rx 1 Route to Default Gateway

RD1= 1 byte, value 0 or 1

Command or Query. When enabled, all incoming Unicast traffic not destined to the CDM-740 local network subnet is directed to the configured default Gateway IP, where:

0=Off (default) 1=on

Example: RD1=1 (pass traffic to the default gateway IP)

RD1= RD1? RD1* RD1#

RD1? RD1=x (see Description of Arguments)


A–17

Parameter Type



Command Query


Response to Query

Retrieve next 5 unread Stored Events

N/A 80 bytes Query only. Returns the oldest 5 Stored Events that have not yet been read over the remote control, in the form [CR]sub-body[CR]sub-body[CR]sub-body [CR]sub-body[CR]sub-body, where sub-body=ABCddmmyyhhmmss: A is the fault/clear indicator:

F=Fault C=Clear I=Info

B is the fault type where: 1=Unit 2=Rx 1 Traffic 3=Rx 2 Traffic 4=Tx Traffic 4=Info (Power on/off, or log cleared)

C is Fault Code number, as in FLT? or Info Code, which may be: 0=Power Off 1=Power On 2=Log Cleared 3=Global Config Change 4=Redundancy Config Change

ddmmyy = date stamp. hhmmss = time stamp. If there are less than 5 events to be retrieved, the remaining positions are padded with zeros. If there are no new events, the response is RNE*.

N/A RNE? RNE=[CR]ABCddmmyyhhmmss[CR]ABCddmmyyhhmmss[CR]ABCddmmyyhhmmss[CR]ABCddmmyyhhmmss[CR]ABCddmmyyhhmmss (see Description of Arguments)

Software Boot From Slot

SBS= 1 byte, value of 1 to 2

Command or Query. Selects which bulk firmware slot to boot from, where: 0=Latest Firmware (most recent date) 1=Firmware is Slot #1 2=Firmware is Slot #2

SBS= SBS? SBS* SBS#

SBS? SBS=x (see Description of Arguments)

Rx 1 Satellite MAC address

SM1 12 bytes, alpha- numerical

Command or Query. Defines or returns the satellite MAC address. This address should be the MAC assigned by the route defined in the Encapsulator at the uplink (headend). Example: SM1=0006B00001C2

SM1= SM1? SM1* SM1#

SM1? SM1=aabbccddeeff (see Description of Arguments)

SNMP Read Community

SRC= 16 bytes, characters, no spaces

Command or Query. SNMP read community string. Empty string is not allowed Example: <1/SRC=public

SRC = SRC!

SRC? SRC =x (see Description of Arguments)

SNMP System Contact

SSC= 254 bytes, characters,

Command or Query. SNMP System Contact string Example: <1/SSC=Joe Net Admin. If not configured it returns empty string: <1/SSC=

SSC = SSC!

SSC? STC =x [1..254] (see Description of Arguments)


A–18

Parameter Type



Command Query


Response to Query

SNMP System Location

SSL= 254 bytes, characters,

Command or Query. SNMP System Location string Example: <1/SSL=Upstairs back right If not configured it returns empty string: <1/SSL=

SSL = SSL!

SSL? SSL =x [1..254] (see Description of Arguments)

SNMP Unit Name

SSN= 16 bytes, characters,

Command or Query. SNMP System Name string Example: <1/SSN=Remote1. If not configured it returns empty string: <1/SSC=

SSN = SSN!

SSN? SSN =x [1..16] (see Description of Arguments)

SNMP Trap Destination IP Address

STA= 15 bytes, Numerical

Command or Query. Sets or returns the IP address of the SNMP Trap destination IP Address where traps are sent, in the form xxx.xxx.xxx.xxx where: xxx.xxx.xxx.xxx is the IP addresss Example: <1/STA=010.006.030.001 Returns >0001/STA=0.0.0.0 when not configured.

STA = STA!

STA? STA = xx.xxx.xxx.xxx (see Description of Arguments)

SNMP Write Community

SWC= 16 bytes, characters, no spaces

Command or Query. SNMP write community string. Empty string is not allowed Example: <1/SWC =public

SWC = SWC!

SWC? SWC =x (see Description of Arguments)

Tx BERT Pattern

TBP= 1 byte Command or Query. Tx BERT Pattern, where:

0=2^23-1 (default) 1=2047

Example: TBP=1 (Tx BERT Pattern is 2047)

TBP= TBP? TBP#

TBP? TBP=x (see Description of Arguments)

Modem Time TIM= 6 bytes Command or Query. A time in the form hhmmss, indicating the time from midnight, where:

hh = hours (00 to 23) mm = minutes (00 to 59) ss = seconds (00 to 59)

Example: TIM=231259 (23 hours,12 minutes, 59 seconds)

TIM= TIM? TIM* TIM#

TIM? TIM=hhmmss (see Description of Arguments)

Unit Test Mode

TST= 1 byte, value of 0 thru 2

Command or Query. Unit Test Mode, where:

0=Normal Mode (no test) 1=Tx CW 2=Tx Alternating 1,0 Pattern

Example: TST=1 (Tx CW)

TST= TST? TST* TST#

TST? TST=x (see Description of Arguments)


A–19

A.5.4 Bulk Configuration Strings

Parameter Type



Command Query


Response to Query

Configuration Load

CLD= 1 byte, value of 0 thru 9

Command only. Retrieves a previously stored modem configuration from Configuration Memory location defined by the one-byte argument (0 to 9). Example: CLD=4 (load modem configuration from location 4 to be the active configuration)

CLD= CLD? CLD* CLD#

N/A N/A

Configuration Save

CST= 1 byte, value of 0 thru 9

Command only. Stores the current modem configuration in Configuration Memory location defined by the one-byte argument (0 to 9). Example: CST=0 (store the current configuration in location 0)

CST= CST? CST* CST#

N/A N/A

A.5.5 Modem Information

Parameter Type


Number of Arguments Description of Arguments

Response to

Command

Query (Instruction &

Qualifier) Response to Query

Firmware information

N/A 100 bytes Query only. Returns firmware information for Image 0, 1 or 2, where:

0 = Bootrom Information 1 = Image #1 Firmware Information 2 = Image #2 Firmware Information

Example: FRW=1 Fw/12864-,1.1.1,04/01/07

N/A FRW?0 FRW?1 FRW?2

FRW=xxx…xxx (see Description of Arguments)

Serial Number N/A 9 bytes

Query only. Returns the CDM-740’s 9-digit serial number. Example: SNO=176500143

N/A SNO? SNO=xxxxxxxxx (see Description of Arguments)

Software Revision

N/A 8 bytes Query only. Returns the value of the internal software revision installed in the unit, in the form of xx.xx.xx Example: SWR=1.0.3

N/A SWR? SWR=xx.xx.xx (see description of Arguments)


A–20

Parameter Type



Response to

Command

Query (Instruction &


Equipment ID N/A 36 bytes Query only. Returns the equipment ID and installed options, where: AAAA=0740, the modem model number Installed hardware: B=Slot 1: TPC/DVB-S2 Mod card

0 = not present, 1=present ss=spares (4) Software FAST options: C=Tx Frequency option

0=70/140MHz, 1= 70/140MHz & L-band D=Tx Modulation option

0=Standard: QPSK,. 1=Option 0 plus 8-QAM 2=Option 0 plus 16-QAM 3=Option 0 plus option 1 and 2

E= Tx Data Rate option 0= Standard: 16kbps to 512kbps 1= 16kbps to 2048kbps 2= 16kbps to 5000kbps 3= 16kbps to 9980kbps 4= 16kbps to 2048kbps

F=Tx FEC option 0= Standard: TPC G=Rx 1 FEC and Symbol Rate option 0= Standard: DVB-S to 45Msps 1= Option 1 plus DVB-S2 to 30Msps 2= Option 1 plus DVB-S2 to 47Msps 3= Option 1 plus DVB-S2 to 62Msps H=Rx 1 Demodulation option 0= Standard: DVB-S QPSK, DVB-S2 Qpsk, 8psk 1= Option 0 plus DVB-S2 16apsk 2= Option 1 plus DVB-S2 32apsk I=Demodulation Support option 0= Standard: CCM 1= Option 0 plus VCM ssssssssssssssssssss = spares (20)

N/A EID? EID=AAAABssssCDEFGHIssssssssssssssssssss (see Description of Arguments)


A–21

A.5.6 Modem Performance Information

Parameter Type



Response to

Command

Query(Instruction &


Rx BER N/A 5 bytes Query only. Returns the value of the estimated corrected BER in the form a.bE3, where:

a.b = value, and E3 = the exponent 10-3.

Returns 99999 if the demodulator is unlocked or BER data is unavailable. Example: BER=4.8E3 (which is BER=4.8 x 10-3)

N/A BE1? BE1=xxxxx (see description of Arguments)

Rx Es/No N/A 4 bytes Query only. Returns the value of Es/No in the form xx.x, where:

xx.x = value between -1 to -40 dB. Negative sign (–) is implied. Resolution = 0.1 dB. Returns 99.9 if demod is unlocked. Returns +040 for values greater than -40.0 dB. Example: EBN=12.3 (which is Es/No = -12.3 dB)

N/A ES1? ES1=xxxxx (see Description of Arguments)

Faults and Status

N/A 10 bytes Query only. Returns the current highest-priority fault and status codes for the Unit (hardware), TX Traffic, RX Traffic, and ODUs: a = Unit status:

0=No faults 1=Power supply fault, +5 volts 2=Power supply fault , +12 volts 3=Power supply fault, +3.3 volts 4=Tx synthesizer unlocked 5=Tx FPGA PLL unlocked 6=Modulator FPGA load fail 7=TPC/LDPC FPGA load fail 8=Reference unlocked (Note: Tx off) 9=Unit Temperature Exceeded

b = Tx Traffic status: 0=Tx traffic OK 1=Tx FIFO slip 2= Tx 130 MHz PLL unlocked 3=(Hi-Stab) No External Ref found (no activity)

c = Rx 1 Traffic status: 0=Rx Traffic OK 1=Demodulator unlocked 2=Rx FIFO Overrun

N/A FLT? FLT=abcdefghxx (see Description of Arguments)


A–22

Parameter Type



Response to

Command

Query(Instruction &


Faults and Status (cont.)

d = Rx 2 Traffic status (future): 0=Rx Traffic OK 1=Demodulator unlocked 2=Rx FIFO Overrun

e = Change in modem fault status since last poll 0=unchanged 1=changed

f = Change in modem configuration since last poll 0=unchanged

1=changed xx=spares

Force 1:1 Switch

FSW= None Command only. This command takes no arguments. Forces the unit to toggle the Unit Fail relay to the “fail” state for approximately 500ms. If the unit is a 1:1 pair and it is currently the ‘Online’ unit, this forces a switchover so the unit will then be in ‘Standby’ mode. The command is always executed by the unit regardless of whether it is stand-alone, or in a 1:1 pair.

FSW= FSW*

N/A N/A

Monitor Port MOP= 1 byte, value of 0 or 1

Command or Query. Monitor Port State control, where:

0=Off 1=On

Example: MOP=1 (Monitor Port On)

MOP= MOP? MOP#

MOP? MOP=x (see Description of Arguments)

Redundancy State

N/A 1 byte, 0 or 1 Query only. Returns the redundancy state of the unit, where:

0=Offline 1=Online

Example: RED=1 (which is Online)

N/A RED? RED=x (see description of Arguments)

Rx Signal Level

N/A 5 bytes Query Only. Returns the value of the Rx signal level, in dBm, between –25 and –55 dBm with a tolerance of +/- 5 dBm. Resolution = 0.5dB. Note the following: If in the range of –25 to –55dBm, returns SL1=-xx.y If >–25dBm, returns SL1=GT-25 (GT = ‘greater than’) If <–55 dBm, returns SL1=LT-55 (LT = ‘less than’) Example: SL1=-45.5 (indicating –45.5 dBm)

N/A SL1? SL1=xxxxx (see description of Arguments)

Temperature N/A 3 bytes Query only. Returns the value of the internal temperature sensor (in degrees C), in the form of xxx. Example: TMP=+26

N/A TMP? TMP=xxx (see Description of Arguments)


A–23

A.5.7 BUC Parameters (L-Band Device)

Parameter Type



Command Query


Response to Query

BUC Current High Limit

BCH=

4 bytes Command or Query. Sets or returns the BUC Current High Limit in the form xxxx, where:

xxxx = a value between 0 and 4000mA, in 100mA increments

BCH= BCH? BCH* BCH#

BCH?

BCH=xxxx (see Description of Arguments)

BUC Current Low Limit

BCL=

4 bytes Command or Query. Sets or returns the BUC Current Low Limit in the form xxxx, where:

xxxx = a value between 0 and 4000mA, in 100mA increments.

BCL= BCL? BCL* BCL#

BCL?

BCL=xxxx (see Description of Arguments)

BUC DC Current

N/A 4 bytes Query only. Returns the value of the BUC DC current in the form xxxx, where:

xxxx = a value, in mA, between 0 and 9999. If not available, response is 0000.

N/A BDC?

BDC=xxxx (see Description of Arguments)

BUC Voltage

N/A 4 bytes Query only. Returns the value of the BUC Voltage in the form xx.x, where:

xx.x = a value, in volts, between 0 and 64.0

N/A BDV?

BDV=xx.x (see Description of Arguments)

BUC 10 MHz Reference

BFR=

1 byte Command or Query. BUC 10 MHz Reference control, where:

0=Off 1=On

BFR= BFR? BFR* BFR#

BFR?

BFR=x (see Description of Arguments)

BUC Power Supply enable

BPS=

1 byte, value of 0 or 1

Command or Query. BUC Power Supply control, where:

0=Disable the BUC DC Power Supply 1=Enable the BUC DC Power Supply

BPS= BPS? BPS* BPS#

BPS?

BPS=x (see Description of Arguments)


A–24

Notes:

B–1

Appendix B. FAST Activation Procedure

B.1 FAST System Overview

The CDM-740 is extremely flexible and powerful, and incorporates a large number of optional features. In order to permit a lower initial cost, the modem may be purchased with only the desired features enabled.

If, at a later date, a user wishes to upgrade the functionality of a modem, Comtech EF Data provides Fully Accessible System Topology (FAST), which permits the purchase and installation of options through special authorization codes loaded into the unit either via the front panel keypad or entered remotely via the remote port located on the modem rear panel.

These unique access codes may be purchased at any time from Comtech EF Data.

FAST System Theory FAST facilitates on-location upgrade of the operating feature set without removing a modem from the setup.

With FAST technology, operators have maximum flexibility for enabling functions as they are required. FAST allows an operator to order a modem precisely tailored for the initial application.

When service requirements change, the operator can upgrade the topology of the modem to meet those requirements within minutes. This accelerated upgrade can be accomplished because of FAST’s extensive use of the programmable logic devices incorporated into Comtech EF Data products.

FAST Implementation Comtech EF Data’s FAST system is factory-implemented in the modem. All FAST options are available through the basic platform unit at the time of order – FAST allows immediate activation of available options, after confirmation by Comtech EF Data, through the front panel keypad or via the remote control interface.

FAST Accessible Options Hardware options for basic modems can be ordered and installed either at the factory or in the field. The operator can select options that can be activated easily in the field, depending on the current hardware configuration of the modem. A unique access code enables configuration of the available hardware.

CDM-740 Advanced Satellite Modem Revision 0 FAST Activation Procedure MN-CDM740

B–2

Sect. 1.3.10 in Chapter 1. INTRODUCTION shows the FAST and FAST-accessible hardware options available for the CDM-740.

B.2 FAST Activation Procedure

The FAST options are linked to three option registers – Word1, Word2, and Word3. When an unlock FAST code is obtained from Comtech EF Data it will be for a specific register.

B.2.1 Serial Number

Obtain the Modem serial number as follows:

a) From the front panel main menu, SELECT: FAST, then press [ENTER].

b) The Modem motherboard Serial Number is displayed on the bottom line, to the left.

c) Record serial number:

B.2.2 View currently installed features

To view the currently installed features, proceed as follows: a) From the front panel main menu, SELECT: FAST, then press [ENTER]. b) From the SELECT: FAST OPTIONS menu, select VIEW, then press [ENTER]. c) Scroll through the Modem Options using the up and down arrow keys (▲▼), and

note which options are ‘Installed’ or ‘Not Installed’. Any that are ‘Not Installed’ may be purchased as a FAST upgrade.

Contact a Comtech EF Data sales representative to order features. You will be asked to provide the Modem Serial Number. Comtech EF Data Customer Support personnel will verify the order and provide an invoice and instructions, including a 20-character configuration code.

B.2.3 Enter Access Codes

Enter the access codes as follows: a) Press [CLEAR] to return to the SELECT: FAST OPTIONS menu. b) Select #: SET (where # is Register #1, #2, or #3), then press [ENTER]. c) Use the arrow keys (▲▼◄ ►) to carefully enter the 20-character configuration code. d) Press [ENTER].

If everything has been entered correctly, the display will show “CONFIGURED CORRECTLY” and the modem resets to its default configuration. If the code was not considered valid, the message “FAILED TO CONFIGURE. RE-ENTER CODE” will be shown.

C–1

Appendix C. 1:1 Redundancy

C.1 Overview

Figure C-1. CRS-175L L-Band 1:1 Redundancy Switch

For 1:1 redundancy applications, the CDM-740 Advanced Satellite Modem is supported by the Comtech EF Data CRS-175L L-Band 1:1 Redundancy Switch (Figure C-1).

The purpose of this appendix is to provide a brief overview of the CRS-175L’s functionality in a CDM-740 1:1 redundant configuration. For more detailed information on all aspects of the CRS-175L’s setup, configuration, and operation, refer to the CRS-175L L-Band 1:1 Redundancy Switch Installation and Operation Manual (Comtech EF Data Document Number MN-CRS175).

CDM-740 Advanced Satellite Modem Revision 0 1:1 Redundancy MN-CDM740

C–2

C.2 Introduction

Figure C-2 shows the block diagram for a 1:1 redundancy configuration for L-Band simplex or L-Band full duplex operation. using a CDM-740 modem pair with a CRS-175L switch.

Figure C-2. CRS-175L – 1:1 Redundancy (L-Band Simplex or Full Duplex Operation)

The CRS-175L switch supports 1:1 redundancy in the following manner:

• In normal operation, the primary and backup modems share all configuration parameters. Changes to the primary modem (the online modem) are automatically transferred to the backup modem. Any change to the backup modem is overwritten by the CRS-175L and reverts to whatever configuration the primary modem is set to.

Additionally, the GE1 and GE2 Gigabit Ethernet data interface data ports are functional on the primary modem and disabled on the backup modem, while the FE (10/100) management port remains operational on both the primary and backup modems.

• When a major alarm occurs in the primary modem:

o The primary modem’s carrier is muted; however, BUC power, LNB power, and 10MHz reference1 continue to be sent to the CRS-175L. The CRS-175L will terminate the BUC power, LNB power, and 10 MHz internally and these signals are then taken from the backup modem along with the backup modem’s Tx carrier.

o Rx signals are always routed to both the online and backup modems at all times.

1 BUC, LNB and 10MHz Reference functionality are optional features that may or may not be enabled


C–3

o The GE1 and GE2 Gigabit Ethernet data interfaces on the failed primary modem are disabled and the GE1 and GE2 Gigabit Ethernet data interfaces on the backup modem will be enabled. Once this occurs, the backup modem sends out gratuitous ARP responses on both Gigabit Ethernet interfaces to inform the downstream LAN devices of the new associations between both Gigabit Ethernet interface’s IP addresses and the backup modem’s MAC addresses. The IP addresses will be the same IP addresses that existed on the primary modem, but the MAC addresses will be unique to the backup modem.

• Upon restoration of the primary modem, the backup modem remains online until a manual switch to primary is performed (non-revertive).

C.3 CDM-740 1:1 Redundancy Setup

IMPORTANT

In order to avoid damage to the CDM-740 modems and the CRS-175L switch, it is important for the user to follow this sequence of configuration:

• First, ensure that the CDM-740 Satellite Modems have been properly set up with the CRS-175 switch for 1:1 redundant operation. All cables should be connected between the (powered OFF) modems and the CRS-175L.

• Second, once the modems and switch have been properly cabled for 1:1 redundant operation, the user should then set the DIP switches on the CRS-175L to the correct operational selection.

• Third, once the modem and switches have been properly set up and the switch configured for proper operation, the user can then power ON the modems.

Refer to Chapter 2. INSTALLATION and Chapter 3. MODEM AND SWITCH CONFIGURATION in the CRS-175L L-Band 1:1 Redundancy Switch Installation and Operation Manual (Comtech EF Data Document Number MN-CRS175) for further information on these procedures.

C.3.1 User (IF) CRS-175L CDM-740 User (Data Interface) Cabling

Refer to Chapter 4. CABLES AND CONNECTIONS and Appendix A. CABLE DRAWINGS in the CRS-175L L-Band 1:1 Redundancy Switch Installation and Operation Manual (Comtech EF Data Document Number MN-CRS175) for complete cabling information.

The user should ensure that:

• IF cabling has been connected between the user’s IF Rx/Tx signal sources and the CRS-175L “Antenna Side” connectors;

• IF cabling has been connected between the CRS-175 IF Rx/Tx “Modem Side” connectors and the primary and backup Modems;

• Control cabling has been connected between the CRS-175L and the primary and backup modems;

• User-provided Data Interface Cabling and Switches have been connected between the primary and backup modems and the user’s data interface.


C–4

Figure C-3 depicts the IF and Control cabling schematics for a standard 1:1 redundancy configuration.

Note: The Gigabit Ethernet Data Interface cabling is not shown in this figure for clarity.

Figure C-4 depicts the Gigabit Ethernet data interface cabling between the primary and backup modems and the user’s data interface.

Note: IF and Control cabling is omitted from this figure for clarity.

Refer to Chapter 4. CABLES AND CONNECTIONS and Appendix A. CABLE DRAWINGS in the CRS-175L L-Band 1:1 Redundancy Switch Installation and Operation Manual (Comtech EF Data Document Number MN-CRS175) for complete cabling information.

C.3.1.1 User CRS-175L CDM-740 IF and Control Cabling

Figure C-3. User CRS-175L CDM-740 IF and Control Cabling Example


C–5

C.3.1.2 CDM-740 User Data Interface Cabling Connections

Figure C-4. User CRS-175L CDM-740 IF and Control Cabling Example


C–6

C.3.2 CDM-740 1:1 Redundancy Operations via the CDM-740

C.3.2.1 Redundancy Operation via the Front Panel

The user can control 1:1 redundant operation via the CDM-740 front panel, using the keypad and display. Nested menus are used, which display all available options, and prompt the user to carry out a required action.

Figure C-5. CDM-740 – Front Panel View The purpose of the key features of the CDM-740 front panel is summarized as follows:

Feature Description

LED Indicators

Used to indicate the operational status of the CDM-740 Modem.

Keypad Used to select and navigate the available CDM-740 menu functions as displayed on the Vacuum Fluorescent Display (VFD).


Used to fully control and monitor operation of the CDM-570 Modem. Consisting of two lines with a width of 24 characters each, nested menus displayed on the VFD provide all available options and prompt the user to carrout out a required action via the keypad.

For complete details on using the CDM-740 front panel, refer to Chapter 5. FRONT PANEL OPERATIOM in this manual.

To enable 1:1 Redundancy from the CDM-740 front panel, press ENTER or CLEAR until the Select: (Main) menu is displayed:

Select: Configuration Test Monitor Store/Ld Utility ODU FAST (◄►)

Use the ◄ ► arrow keys to select the Utility menu branch, then press ENTER.

Utilities: Set-RTC Display-Brightness 1:1 1:N Circuit-ID Firmware (◄►E)




C–7

From the Utilities: menu branch, select 1:1 using the ◄ ► arrow keys, then press ENTER.

Press ENTER key to force unit into Standby (1:1 only)

The CDM-740 automatically detects the presence of a CRS-175L L-Band 1:1 Redundant Switch. If Utility: 1:1 is selected and this unit is currently online and part of a 1:1 redundant modem pair operating in tandem with a CRS-175L switch, the user is prompted to press ENTER (as indicated above); this command then automatically forces the switchover of operation to the backup (standby) modem.

If, however, 1:1 is selected from the Utility menu branch and no CRS-175L switch is detected, the following error message displays:


An important note about 1:N redundancy selection: The CDM-740 presently does not accommodate 1:N redundant operations; therefore, while selectable, this submenu is non-functional. If, however, 1:N is selected from the Utility menu branch – regardless of the presence of a CRS-175L switch – the following error message displays:


C.3.2.2 Redundancy Operation via Telnet Remote Control

The user can effect 1:1 redundancy switchover using a terminal-based Telnet interface. Using the FSW remote control command via Telnet remote control is equivalent to the front panel SELECT: Utility 1:1 (ENTER) command. Observe the following:

Parameter Type


Description of Arguments

Force 1:1 Switch FSW= Command only. This command takes no arguments. Forces the unit to toggle the Unit Fail relay to the “fail” state for approximately 500ms. If the unit is a 1:1 pair and it is currently the ‘Online’ unit, this forces a switchover so the unit will then be in ‘Standby’ mode. The command is always executed by the unit regardless of whether it is stand-alone, or in a 1:1 pair.

For complete details on using remote monitor and control commands and quieries, refer to Appendix A. REMOTE CONTROL in this manual.


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C.3.2.3 Redundancy Operation via the Web Server Interface

Figure C-6. CDM-740 Web Server Interface Utility page From the CDM-740 Web Server Interface the ‘Utility’ page (Figure C-6) provides the user with the means to load or save a modem configuration, and control operation of the CDM-740 as part of a 1:1 Redundancy setup.

In the Redundancy section, to define the Current Redundancy State, use the dropdown menu to set the status as Online or Offline.

Once the Current Redundancy State has been established, click [Force Redundancy Switch] to force the unit to toggle the Unit Fail relay to the “fail” state for approx 500ms. If the unit is part of a 1:1 pair, and it is currently the ‘Online’ unit, this will force a switchover, so the unit will then be in ‘Standby’ mode. The command is always executed by the unit, regardless of whether it is stand-alone or in a 1:1 pair.

For complete details on using the CDM-740 Web Server Interface, refer to Chapter 6. ETHERNET MANAGEMENT in this manual.

METRIC CONVERSIONS

Units of Length

Unit Centimeter Inch Foot Yard Mile Meter Kilometer Millimeter

1 centimeter — 0.3937 0.03281 0.01094 6.214 x 10-6 0.01 — —

1 inch 2.540 — 0.08333 0.2778 1.578 x 10-5 0.254 — 25.4

1 foot 30.480 12.0 — 0.3333 1.893 x 10-4 0.3048 — —

1 yard 91.44 36.0 3.0 — 5.679 x 10-4 0.9144 — —

1 meter 100.0 39.37 3.281 1.094 6.214 x 10-4 — — —

1 mile 1.609 x 105 6.336 x 104 5.280 x 103 1.760 x 103 — 1.609 x 103 1.609 —

1 mm — 0.03937 — — — — — —

1 kilometer — — — — 0.621 — — —

Temperature Conversions

Units of Weight

Unit Gram Ounce Avoirdupois

Ounce Troy

Pound Avoirdupois

Pound Troy Kilogram

1 gram — 0.03527 0.03215 0.002205 0.002679 0.001

1 oz. avoir. 28.35 — 0.9115 0.0625 0.07595 0.02835

1 oz. troy 31.10 1.097 — 0.06857 0.08333 0.03110

1 lb. avoir. 453.6 16.0 14.58 — 1.215 0.4536

1 lb. Troy 373.2 13.17 12.0 0.8229 — 0.3732

1 kilogram 1.0 x 103 35.27 32.15 2.205 2.679 —

Temperature ° Fahrenheit ° Centigrade

Water freezes 32 0

Water boils 212 100

Absolute 0 -459.69 -273.16

Formulas

° C = (F - 32) * 0.555

° F = (C * 1.8) + 32

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