DT-4500-A Series
Downconverters
Installation and Operation Manual
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.
Part Number MN-DT4500A Revision 1
DT-4500-A Series
Downconverters
Installation and Operation Manual
Part Number MN-DT4500A
Copyright © Comtech EF Data, 2013. All rights reserved. Printed in the USA.
Comtech EF Data, 2114 West 7th Street, Tempe, Arizona 85281 USA, 480.333.2200, FAX: 480.333.2161
Revision 1
This page is intentionally blank.
iii
TABLE OF CONTENTS
TABLE OF CONTENTS ........................................................................................................... III
TABLES .................................................................................................................................... X
FIGURES ................................................................................................................................... X
PREFACE ............................................................................................................................... XIII
About this Manual .......................................................................................................................... xiii
Disclaimer .............................................................................................................................................. xiii
Reporting Comments or Suggestions Concerning this Manual ............................................................. xiii
Conventions and References ........................................................................................................... xiii
Patents and Trademarks ........................................................................................................................ xiii
Warnings, Cautions, and Notes ............................................................................................................. xiv
Examples of Multi-Hazard Notices ........................................................................................................ xiv
Recommended Standard Designations ................................................................................................. xiv
Metric Conversion ................................................................................................................................. xiv
Safety and Compliance ..................................................................................................................... xv
Electrical Safety and Compliance............................................................................................................ xv
Electrical Installation .............................................................................................................................. xv
Operating Environment .......................................................................................................................... xv
European Union Radio Equipment and Telecommunications Terminal Equipment (R&TTE) Directive
(1999/5/EC) and EN 301 489-1 .............................................................................................................. xvi
European Union Electromagnetic Compatibility (EMC) Directive (2004/108/EC) ............................ xvi
European Union Low Voltage Directive (LVD) (2006/95/EC) ............................................................ xvi
European Union RoHS Directive (2002/95/EC) ................................................................................. xvii
European Union Telecommunications Terminal Equipment Directive (91/263/EEC) ...................... xvii
CE Mark ............................................................................................................................................. xvii
Warranty Policy ............................................................................................................................ xviii
Limitations of Warranty ........................................................................................................................ xviii
Exclusive Remedies ................................................................................................................................. xix
Getting Help .................................................................................................................................... xx
Contacting Comtech EF Data .................................................................................................................. xx
CHAPTER 1. INTRODUCTION ........................................................................................ 1–1
1.1 Overview ........................................................................................................................... 1–1
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1.2 Functional Description ....................................................................................................... 1–2
1.2.1 Applications ............................................................................................................................. 1–3
1.2.2 RF Signal Conversion................................................................................................................ 1–4
1.2.3 Monitor & Control ................................................................................................................... 1–4
1.3 Downconverter Features .................................................................................................... 1–5
1.3.1 Physical Description ................................................................................................................. 1–5
1.3.2 Dimensional Envelope ............................................................................................................. 1–6
1.3.3 Downconverter Physical Features ........................................................................................... 1–7
1.3.3.1 Front Panel ...................................................................................................................... 1–7
1.3.3.2 Rear Panel ....................................................................................................................... 1–7
1.4 Summary of Specifications ................................................................................................. 1–8
1.4.1 DT-4503/C-A C-Band Downconverter ..................................................................................... 1–8
1.4.2 DT-4503/E-A C-Band Downconverter .................................................................................... 1–10
1.4.3 DT-4503-A, /D-A, /E-A C-Band Downconverters ................................................................... 1–12
1.4.4 DT-4510-A, /D-A, DT-4511-A, DT-4512-A, /E-A Ku-Band Downconverters ................................ 1–14
1.4.5 DT-4513-A, /E-A Ku-Band Downconverters ........................................................................... 1–16
CHAPTER 2. INSTALLATION .......................................................................................... 2–1
2.1 Unpacking and Inspecting the Shipment ............................................................................. 2–1
2.2 Installing into a Rack Enclosure .......................................................................................... 2–2
2.2.1 Installing the Optional Rear-Mounting Support Brackets Kit .................................................. 2–4
2.2.2 Installing the Bearingless Rack Slide Sets ................................................................................ 2–6
2.3 Connect Prime Power Connection ...................................................................................... 2–7
2.4 Connect External Cables ..................................................................................................... 2–7
CHAPTER 3. REAR PANEL CONNECTORS................................................................... 3–1
3.1 Rear Panel Overview .......................................................................................................... 3–1
3.2 DT-4500-A
External Connectors .......................................................................................... 3–2
3.2.1 Chassis-mounted Connectors .................................................................................................. 3–2
3.2.1.1 AC Power IEC Line Input Connector Module .................................................................. 3–2
3.2.1.2 Optional DC Power Connection ...................................................................................... 3–3
3.2.1.3 J2A | REF IN, External Reference Input Connector (BNC-F) ............................................ 3–3
3.2.1.4 J2B | REF OUT, External Reference Output Connector (BNC-F) ..................................... 3–3
3.2.1.5 100BASE-TX Ethernet M&C Port (RJ-45) ......................................................................... 3–4
3.2.1.6 P1 | RELAY, Summary Fault Output Connector (DB-9F) ................................................. 3–4
3.2.1.7 J1 | COM1 EIA-485/232 Interface Connector (DB-9F) .................................................... 3–5
3.2.1.8 Chassis Ground Connector .............................................................................................. 3–5
3.2.2 Module-mounted Connectors ................................................................................................. 3–6
3.2.2.1 J3 | HSB (High Speed Bus) Connector (DB-25F) .............................................................. 3–7
3.2.2.2 Switch Module IF, RF, and Loop Connectors .................................................................. 3–8
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3.3 Cable Connections ............................................................................................................. 3–9
3.3.1 Cable Connections – Standalone (Non-Redundant) Operation ............................................ 3–10
3.3.2 Cable Connections – Redundant System Operation ............................................................. 3–11
CHAPTER 4. UPDATING FIRMWARE ............................................................................. 4–1
4.1 Introduction ...................................................................................................................... 4–1
4.2 Getting Started: Preparing for the Firmware Download ...................................................... 4–2
4.3 Downloading and Extracting the Firmware Update ................................................................. 4–3
4.4 Performing the Ethernet FTP Upload Procedure .................................................................. 4–4
CHAPTER 5. FRONT PANEL OPERATION..................................................................... 5–1
5.1 Introduction ...................................................................................................................... 5–1
5.1.1 Switch Power On (Rear Panel) ................................................................................................. 5–2
5.1.2 LED Indicators .......................................................................................................................... 5–2
5.1.3 Keypad ..................................................................................................................................... 5–3
5.1.4 Vacuum Fluorescent Display (VFD) .......................................................................................... 5–3
5.2 2BOpening Screen .............................................................................................................. 5–4
5.3 Main Menu ........................................................................................................................ 5–4
5.3.1 CONFIG (Configuration) ........................................................................................................... 5–5
5.3.1.1 CONFIG: OUTPUT ............................................................................................................ 5–5
5.3.1.2 CONFIG: REMOTE (Remote Control) ............................................................................... 5–6
5.3.1.3 CONFIG: REDUNDANCY ................................................................................................... 5–9
5.3.1.4 CONFIG: FAULTRECOVERY ............................................................................................ 5–11
5.3.1.5 CONFIG: COLDSTART ..................................................................................................... 5–11
5.3.2 MONITOR ............................................................................................................................... 5–12
5.3.3 FAULTS ................................................................................................................................... 5–12
5.3.3.1 FAULTS: CURRENT ......................................................................................................... 5–12
5.3.3.2 FAULTS: STORED (Stored Faults Log) ............................................................................ 5–13
5.3.4 PRE-SELECTS .......................................................................................................................... 5–14
5.3.4.1 PRE-S
ELECTS: LOAD ....................................................................................................... 5–14
5.3.4.2 PRE-SELECTS: PROGRAM .............................................................................................. 5–14
5.3.4.3 PRE-SELECTS: CLEAR ..................................................................................................... 5–15
5.3.5 UTILITY ................................................................................................................................... 5–15
5.3.5.1 UTILITY: TIME (Real-Time Clock) ................................................................................... 5–15
5.3.5.2 UTILITY : DISP (VFD Display) .......................................................................................... 5–16
5.3.5.3 UTILITY: AID (Application Identification String) ............................................................ 5–16
5.3.5.4 UTILITY: REFOSC (Reference Oscillator Adjustment) .................................................... 5–16
5.3.5.5 UTILITY: SLOPE .............................................................................................................. 5–17
5.3.5.6 UTILITY: LAMP-TEST ...................................................................................................... 5–17
5.3.5.7 UTILITY: FIRMWARE ...................................................................................................... 5–17
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CHAPTER 6. ETHERNET-BASED REMOTE PRODUCT MANAGEMENT ...................... 6–1
6.1 Introduction ...................................................................................................................... 6–1
6.1.1 Ethernet Management Interface Protocols............................................................................. 6–2
6.2 SNMP Interface .................................................................................................................. 6–2
6.2.1 Management Information Base (MIB) Files............................................................................. 6–2
6.2.2 SNMP Community Strings........................................................................................................ 6–3
6.2.3 SNMP Traps ............................................................................................................................. 6–3
6.3 45xxA Telnet Interface ....................................................................................................... 6–4
6.3.1 Telnet Operation via HyperTerminal ....................................................................................... 6–4
6.4 45xxA Web Server (HTTP) Interface .................................................................................... 6–5
6.4.1 Enabling the Web Server Interface .......................................................................................... 6–5
6.4.2 User Login ................................................................................................................................ 6–6
6.4.3 45xxA Web Server Interface Operational Features ................................................................. 6–7
6.4.3.1 Navigation ....................................................................................................................... 6–7
6.4.3.2 Page Sections .................................................................................................................. 6–7
6.4.3.3 Action Buttons ................................................................................................................ 6–7
6.4.3.4 Drop-down lists ............................................................................................................... 6–8
6.4.3.5 Text or Data Entry ........................................................................................................... 6–8
6.4.4 45xxA Web Server Interface Menu Tree ................................................................................. 6–8
6.4.5 45xxA Web Server Interface Page Descriptions ...................................................................... 6–9
6.4.5.1 Home Pages .................................................................................................................... 6–9
6.4.5.1.1 Home | Home ............................................................................................................ 6–9
6.4.5.1.2 Home | Contact ....................................................................................................... 6–10
6.4.5.1.3 Home | Support ....................................................................................................... 6–11
6.4.5.2 Admin Pages ................................................................................................................. 6–12
6.4.5.2.1 Admin | Access ........................................................................................................ 6–12
6.4.5.2.2 Admin | SNMP ......................................................................................................... 6–14
6.4.5.3 Config Pages ..................................................................................................................
6–15
6.4.5.3.1 Config | Converter ................................................................................................... 6–15
6.4.5.3.2 Config | Ref .............................................................................................................. 6–17
6.4.5.3.3 Config | Pre-selects .................................................................................................. 6–18
6.4.5.3.4 Config | Utility .......................................................................................................... 6–19
6.4.5.3.5 Config | Redundancy ............................................................................................... 6–21
6.4.5.4 Status Pages .................................................................................................................. 6–22
6.4.5.4.1 Status | Summary .................................................................................................... 6–22
6.4.5.4.2 Status | Faults .......................................................................................................... 6–23
APPENDIX A. REMOTE CONTROL .................................................................................. A–1
A.1 Introduction ..................................................................................................................... A–1
A.2 Communication Interfaces ................................................................................................ A–1
A.2.1 TIA/EIA-485 (RS-485) ............................................................................................................... A–1
A.2.2 TIA/EIA-232 (RS-232) ............................................................................................................... A–2
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A.2.3 Ethernet (100BASE-TX) ............................................................................................................ A–2
A.3 Access Methods ................................................................................................................ A–2
A.3.1 Direct Access ............................................................................................................................ A–2
A.3.2 Indirect Access ......................................................................................................................... A–3
A.4 Addresses ......................................................................................................................... A–3
A.4.1 Physical Address ...................................................................................................................... A–3
A.4.2 Virtual Address ........................................................................................................................ A–3
A.4.3 IP Address ................................................................................................................................ A–4
A.5 Basic Protocol ................................................................................................................... A–4
A.5.1 Transmission Mode ................................................................................................................. A–4
A.5.2 Baud Rate ................................................................................................................................ A–4
A.5.3 Asynchronous Character Format ............................................................................................. A–4
A.5.4 Character Set ........................................................................................................................... A–4
A.5.5 Response Timeout ................................................................................................................... A–5
A.5.6 Bus Inactivity Requirement ..................................................................................................... A–5
A.6 Message Structure ............................................................................................................ A–5
A.6.1 Start Character......................................................................................................................... A–5
A.6.2 Device Address ........................................................................................................................ A–5
A.6.3 Command ................................................................................................................................ A–5
A.6.4 Confirmation Response ........................................................................................................... A–6
A.6.5 Error Response ........................................................................................................................ A–6
A.6.6 End of Message........................................................................................................................ A–6
A.6.6.1 Command Ending ............................................................................................................ A–6
A.6.6.2 Response Ending ............................................................................................................. A–6
A.7 Command / Response Pairs ............................................................................................... A–7
A.7.1 Utility Commands .................................................................................................................... A–7
A.7.1.1 Time ................................................................................................................................ A–7
A.7.1.2 Date ................................................................................................
................................. A–7
A.7.1.3 Time Protocol Enable ...................................................................................................... A–7
A.7.1.4 Time Protocol Server ...................................................................................................... A–8
A.7.1.5 Local / Remote Status ..................................................................................................... A–8
A.7.1.6 Media Access Control (MAC) Address ............................................................................ A–8
A.7.1.7 IP Address ....................................................................................................................... A–9
A.7.1.8 IP Gateway ...................................................................................................................... A–9
A.7.1.9 Physical Address.............................................................................................................. A–9
A.7.1.10 Baud Rate ................................................................................................................. A–10
A.7.1.11 LCD Contrast ............................................................................................................. A–10
A.7.1.12 LCD Brightness .......................................................................................................... A–10
A.7.1.13 Screen Saver Mode ................................................................................................... A–10
A.7.1.14 Screen Saver Timeout ............................................................................................... A–11
A.7.1.15 VFD Brightness .......................................................................................................... A–11
A.7.1.16 Reference Oscillator Tuning ..................................................................................... A–11
A.7.1.17 Converter Slope Adjustment .................................................................................... A–11
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A.7.1.18 Equipment Type........................................................................................................ A–12
A.7.1.19 Part Number ............................................................................................................. A–12
A.7.1.20 Legacy Firmware Information .................................................................................. A–12
A.7.1.21 Firmware Information .............................................................................................. A–13
A.7.1.22 Firmware Image ........................................................................................................ A–13
A.7.1.23 Application Identification ......................................................................................... A–14
A.7.1.24 Force Reboot ............................................................................................................ A–14
A.7.2 Configuration Commands ...................................................................................................... A–15
A.7.2.1 Frequency ..................................................................................................................... A–15
A.7.2.2 Attenuator .................................................................................................................... A–15
A.7.2.3 Cold Start ...................................................................................................................... A–15
A.7.2.4 Mute.............................................................................................................................. A–16
A.7.2.5 Carrier Mute Mode ....................................................................................................... A–16
A.7.2.6 Redundant Mute Mode ................................................................................................ A–16
A.7.2.7 Auto Fault Recovery ...................................................................................................... A–17
A.7.2.8 Program Preset ............................................................................................................. A–17
A.7.2.9 Display All Presets ......................................................................................................... A–17
A.7.2.10 Clear Preset Configuration ....................................................................................... A–18
A.7.2.11 Select Preset Configuration ...................................................................................... A–18
A.7.3 Modes .................................................................................................................................... A–19
A.7.3.1 Redundant Mode .......................................................................................................... A–19
A.7.3.2 Automatic/Manual Mode ............................................................................................. A–20
A.7.3.3 Backup Mode ................................................................................................................ A–20
A.7.4 Status Commands .................................................................................................................. A–21
A.7.4.1 Configuration Status ..................................................................................................... A–21
A.7.4.2 Maintenance Status ...................................................................................................... A–21
A.7.4.3 Utility Status .................................................................................................................. A–22
A.7.4.4 Alarm Status .................................................................................................................. A–22
A.7.4.5 Summary Alarm Status ................................................................................................
. A–22
A.7.4.6 Terminal Status Change ................................................................................................ A–23
A.7.4.7 Packed Configuration Status ......................................................................................... A–23
A.7.4.8 Packed Maintenance Status.......................................................................................... A–24
A.7.4.9 Packed Utility Status ..................................................................................................... A–24
A.7.4.10 Packed Alarm Status ................................................................................................. A–25
A.7.5 Stored Alarms ........................................................................................................................ A–26
A.7.5.1 Total Stored Alarms ...................................................................................................... A–26
A.7.5.2 Clear All Stored Alarms ................................................................................................. A–26
A.7.5.3 List All Alarms ................................................................................................................ A–26
A.7.6 Error Processing ..................................................................................................................... A–27
A.7.6.1 General Errors ............................................................................................................... A–27
A.7.6.2 Configuration Errors...................................................................................................... A–27
A.7.6.3 Mode Errors .................................................................................................................. A–27
A.7.6.4 Time-Outs ..................................................................................................................... A–27
A.7.7 Command Summaries ........................................................................................................... A–28
A.7.8 User Remote Command Summary ........................................................................................ A–28
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APPENDIX B. REDUNDANT SYSTEM OPERATION ........................................................ B–1
B.1 Introduction to Redundancy Operation ..............................................................................B–1
B.2 Backup Downconverter ......................................................................................................B–2
B.2.1 High Speed Bus (HSB) .............................................................................................................. B–2
B.2.2 Detachable Modules ................................................................................................................ B–2
B.2.2.1 Downconverter Switching ............................................................................................... B–2
B.3 Redundant Configurations..................................................................................................B–3
B.4 Redundant System Configuration .......................................................................................B–8
B.4.1 Redundant System Configuration Using the Front Panel ........................................................ B–8
B.4.1.1 Initial Configuration ........................................................................................................ B–8
B.4.1.2 Automatic Configuration Verification ............................................................................. B–9
B.4.1.3 Manual Configuration and Verification ........................................................................ B–11
B.4.2 Redundant System Configuration using the 45xxA Web Server Interface ............................ B–13
B.4.3 Offset Adjustment ................................................................................................................. B–14
B.4.4 Redundancy Systems – Downconverter Removal and Replacement .................................... B–15
APPENDIX C. MAINTENANCE AND TROUBLESHOOTING ............................................ C–1
C.1 Overview ........................................................................................................................... C–1
C.2 Maintenance Testing .......................................................................................................... C–2
C.2.1 Test Point Samples .................................................................................................................. C–2
C.2.2 Troubleshooting ...................................................................................................................... C–2
C.2.3 Downconverter Faults ............................................................................................................. C–2
C.2.3.1 Prime Power.................................................................................................................... C–2
C.2.3.2 DC Power Supply Module ............................................................................................... C–2
C.2.3.3 RF Converter Module ...................................................................................................... C–3
C.2.3.4 Synthesizer Sum Loop Module ....................................................................................... C–3
C.2.3.5 Synthesizer Fine Step Module ........................................................................................ C–3
C.2.3.6 Reference Oscillator Module .......................................................................................... C–3
C.2.3.7 Temperature Fault .......................................................................................................... C–3
C.2.4 Converter I/O Modules ............................................................................................................
C–4
C.3 Spares ............................................................................................................................... C–4
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TABLES
Table 3-1. DT-4500-A Rear Panel External Connections .......................................................................... 3–2
Table 3-2. Ethernet M&C Interface Connector Pinout ............................................................................. 3–4
Table 3-3. P1 | RELAY Summary Fault Connector Pinout ....................................................................... 3–4
Table 3-4. J1 – 2-Wire EIA-485 Pinout ...................................................................................................... 3–5
Table 3-5. J1 – 4-Wire EIA-485 Pinout ...................................................................................................... 3–5
Table 3-6. J1 – EIA-232C Pinout ................................................................................................................ 3–5
Table 3-7. J3 HSB Interface Connector Pinout .......................................................................................... 3–7
Table 3-8. DT-4500-A and UT-4500-A Available Switch Module Assemblies ........................................... 3–8
FIGURES
Figure 1-1. DT-4500-A Series Downconverters (DT-4503-A shown) ......................................................... 1–1
Figure 1-2. DT-4500-A Series Downconverter Physical Configuration ..................................................... 1–2
Figure 1-6. Typical Functional Block Diagram (DT-4512-A shown) ........................................................... 1–4
Figure 1-4. DT-4500-A Series Downconverter Dimensional Envelope ..................................................... 1–6
Figure 1-4. DT-4500-A Series Downconverter Front Panel ....................................................................... 1–7
Figure 1-5. DT-4500-A Series Downconverter Rear Panel ........................................................................ 1–7
Figure 2-1. Unpacking and Inspecting the Shipment ................................................................................ 2–1
Figure 2-2. Installing into a Rack Enclosure .............................................................................................. 2–3
Figure 2-3. Installing the Optional Rear-Mounting Support Brackets Kit ................................................ 2–4
Figure 2-4. Optional Bearingless Rack Slide Installation (FP/SL000X)....................................................... 2–6
Figure 3-1. DT-4500-A Rear Panel (DT-4503-A with Input/Output Module [IOM-XX Shown) .................. 3–1
Figure 3-2. IOM, RSM, and TSM Switch Modules ..................................................................................... 3–6
Figure 3-3. DT-4500-A Cabling Schematic (DT-4503-A with Receive Switch Module [RSM-XX] Shown) .. 3–9
Figure 3-4. Standalone (Non-Redundant) Downconverter Configuration with Input/Putput Module
(IOM-XX) ......................................................................................................................................... 3–10
Figure 3-5. Standalone (Non-Redundant) Downconverter Configuration with Receive Switch Module
(RSM-XX) ......................................................................................................................................... 3–10
Figure 5-1. DT-4500-A Front and Rear Panel Views .................................................................................. 5–1
Figure 6-1. Home | Home page ................................................................................................................ 6–9
Figure 6-2. Home | Contact page............................................................................................................ 6–10
Figure 6-3. Home | Support page ........................................................................................................... 6–11
Figure 6-4. Admin | Access page ............................................................................................................ 6–12
Figure 6-5. Admin | SNMP page ............................................................................................................. 6–14
Figure 6-6. Config | Converter page ....................................................................................................... 6–15
Figure 6-7. Config | Ref page .................................................................................................................. 6–17
Figure 6-8. Config | Pre-selects page ...................................................................................................... 6–18
Figure 6-9. Config | Utility page .............................................................................................................. 6–19
Figure 6-10. Config | Redundancy page.................................................................................................. 6–21
Figure 6-11. Status | Summary page ...................................................................................................... 6–22
Figure 6-12. Status | Faults page ............................................................................................................ 6–23
Figure B-1. 1:1 Redundant Configuration –Single Source IF Output with IOM-XX and RSM-XX Installed ... B–4
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Figure B-2. 1:1 Redundant Configuration Diagram – Single Source IF Output with IOM-XX and RSM-XX
Installed ............................................................................................................................................ B–4
Figure B-3. 1:1 Redundant Configuration Diagram – Single Source RF Input w/IOM-XX and TSEQM-XX
Installed ............................................................................................................................................ B–4
Figure B-4. TSEQM Connection Locations ................................................................................................. B–5
Figure B-5. 1:1 Redundant Configuration – Dual Source IF Output .......................................................... B–5
Figure B-6. 1:1 Redundant Configuration Diagram – Dual Source IF Output with IOM-XX and RSM-XX
Installed ............................................................................................................................................ B–5
Figure B-7. Dual Source 1:N Redundant Configuration with PSM-XX and RSM-XX Installed ................... B–6
Figure B-8. Dual Source 1:N Redundant Configuration Diagram with PSM-XX and RSM-XX Installed ..... B–7
Figure B-9. Front Panel Displays ............................................................................................................... B–8
Figure B-10. System in Auto Redundant Mode......................................................................................... B–9
Figure B-11. Backup of Downconverter #1 ............................................................................................. B–10
Figure B-12. Downconverter #1 in MANUAL, Others in AUTO ............................................................... B–11
Figure B-13. Forced Backup of Downconverter #1 ................................................................................. B–12
Figure B-14. Config | Redundancy page ................................................................................................. B–13
Figure C-1. Downconverter Signal and Interconnecting Diagram (with Transmit Switch Module [TSM]).. C–1
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About this Manual
This manual provides installation and operation information for the Comtech EF Data’s
DT-4500-A Series Downconverters. This is an informational document intended for the persons
responsible for the operation and maintenance of the DT-4500-A family of products.
Disclaimer
Comtech EF Data has reviewed this manual thoroughly to provide an easy-to-use guide to your
equipment. All statements, technical information, and recommendations in this manual and in
any guides or related documents are believed reliable, but the accuracy and completeness
thereof are not guaranteed or warranted, and they are not intended to be, nor should they be
understood to be, representations or warranties concerning the products described. Further,
Comtech EF Data reserves the right to make changes in the specifications of the products
described in this manual at any time without notice and without obligation to notify any person
of such changes.
If you have any questions regarding the equipment or the information in this manual, please
contact the Comtech EF Data Customer Support Department.
PREFACE
Reporting Comments or Suggestions Concerning this Manual
Comtech EF Data welcomes comments and suggestions regarding the content and design of this
manual. Contact the Comtech EF Data Technical Publications Department:
TechnicalPublications@comtechefdata.com
Conventions and References
Patents and Trademarks
See all of Comtech EF Data's Patents and Patents Pending at http://patents.comtechefdata.com.
Comtech EF Data acknowledges that all trademarks are the property of the trademark owners.
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