Comtech EF Data DT-4513/E Installation And Operation Manual

DT-4500 Series
C- and Ku-Band Down Converters
Installation and Operation Manual
Firmware Ver. 1.3.4 and Higher
Part Number MN/DT4500.IOM / CD-MNDT4500
Revision 2
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/DT4500.IOM / CD-MNDT4500 Revision 2
Copyright © 2016 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
TABLE OF CONTENTS
TABLE OF CONTENTS ............................................................................III
TABLES ................................................................................................. XIV
FIGURES ................................................................................................ XV
PREFACE.............................................................................................. XVII
About this Manual........................................................................................ xvii
Disclaimer .................................................................................................... xvii
Conventions and References ........................................................................ xviii
Patents and Trademarks .................................................................................. xviii
Warnings, Cautions, Notes, and References ................................................... xviii
Examples of Multi-Hazard Notices .................................................................. xviii
Recommended Standard Designations ............................................................. xix
Safety and Compliance .................................................................................. xix
Electrical Safety and Compliance ...................................................................... xix
Electrical Installation ......................................................................................... xix
Operating Environment ..................................................................................... xix
European Union Radio Equipment and Telecommunications Terminal
Equipment (R&TTE) Directive (1999/5/EC) and EN 301 489-1 .......................... xx
European Union Electromagnetic Compatibility (EMC) Directive
(2004/108/EC) ................................................................................................ xx
European Union Low Voltage Directive (LVD) (2006/95/EC) ......................... xxi
European Union RoHS Directive (2002/95/EC) ............................................. xxi
European Union Telecommunications Terminal Equipment Directive
(91/263/EEC).................................................................................................. xxi
CE Mark......................................................................................................... xxii
Product Support ........................................................................................... xxii
Comtech EF Data Headquarters .................................................................... xxii
Warranty Policy ............................................................................................ xxii
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Limitations of Warranty................................................................................... xxiii
Exclusive Remedies.......................................................................................... xxiv
CHAPTER 1. INTRODUCTION ...........................................................1–1
1.1
Overview .......................................................................................... 1–1
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................................................................................ 1–5
1.3 Down Converter Features .................................................................. 1–6
1.3.1 Physical Description ............................................................................. 1–6
1.3.2 Dimensional Envelope.......................................................................... 1–7
1.3.3 Front Panel ........................................................................................... 1–8
1.3.4 Rear Panel .......................................................................................... 1–10
CHAPTER 2. SPECIFICATIONS .........................................................2–1
2.1 Physical and Environmental Specifications ......................................... 2–1
2.1.1 Regulatory Compliance ........................................................................ 2–1
2.1.2 Physical Specifications.......................................................................... 2–1
2.1.3 Mean Time Between Failures (MTBF) .................................................. 2–2
2.1.4 Temperature Range .............................................................................. 2–2
2.1.5 Humidity (Non-condensing) ................................................................. 2–2
2.1.6 Altitude ................................................................................................ 2–2
2.1.7 Front Panel Features ............................................................................ 2–2
2.1.7.1 Sample Test Point Connectors........................................................ 2–2
2.1.7.2 LED Monitoring .............................................................................. 2–2
2.1.7.3 Vacuum Fluorescent Display (VFD) ................................................ 2–3
2.1.7.4 Keypad............................................................................................ 2–3
2.1.8 Rear Panel Features ............................................................................. 2–3
2.1.8.1 Chassis Power, Fusing, and Grounding .......................................... 2–3
2.1.8.1.1 Power Supply Input .................................................................. 2–3
2.1.8.1.2 Power Consumption................................................................. 2–3
2.1.8.1.3 Fusing ....................................................................................... 2–3
2.1.8.1.4 Grounding ................................................................................ 2–4
2.1.8.2 External Reference Connectors ...................................................... 2–4
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2.1.8.3 Ethernet Connector........................................................................ 2–4
2.1.8.4 Serial Connectors ........................................................................... 2–4
2.1.8.5 Removable “Personality” Modules ................................................ 2–4
2.1.8.5.1 IOM (Input/Output Module) Assemblies ................................. 2–4
2.1.8.5.2 PSM (Polarity Switch Module) Assemblies .............................. 2–5
2.1.8.5.3 TSM (Transmit Switch Module) Assemblies ............................. 2–5
2.1.8.5.4 EQM (Equalizer Module) Assemblies ....................................... 2–5
2.1.8.5.5 RSM (Receive Switch Module) Assemblies .............................. 2–6
2.2 Operational Specifications ................................................................. 2–6
2.2.1 Available Models / Operating Frequency Ranges ................................ 2–6
2.2.1.1 C-Band Units .................................................................................. 2–6
2.2.1.2 Ku-Band Units ................................................................................ 2–6
2.2.2 Conversion ........................................................................................... 2–7
2.2.3 Frequency Selection Step Size ............................................................. 2–7
2.2.4 Preset Channels.................................................................................... 2–7
2.2.5 Stability Over Time ............................................................................... 2–7
2.2.6 Stability Over Temperature .................................................................. 2–7
2.2.7 RF Input ................................................................................................ 2–7
2.2.7.1 Input Level...................................................................................... 2–7
2.2.7.2 Return Loss..................................................................................... 2–8
2.2.7.3 Impedance ..................................................................................... 2–8
2.2.7.4 Noise Figure ................................................................................... 2–8
2.2.8 IF Output .............................................................................................. 2–8
2.2.8.1 Level ............................................................................................... 2–8
2.2.8.2 Range ............................................................................................. 2–8
2.2.8.3 Non-carrier Spurious ...................................................................... 2–8
2.2.8.4 Carrier Spurious ............................................................................. 2–8
2.2.8.5 Intermodulation ............................................................................. 2–9
2.2.8.6 Impedance ..................................................................................... 2–9
2.2.8.7 Return Loss..................................................................................... 2–9
2.2.9 Transfer ................................................................................................ 2–9
2.2.9.1 Gain ................................................................................................ 2–9
2.2.9.2 Attenuation Adjustment ................................................................ 2–9
2.2.9.3 Gain Stability .................................................................................. 2–9
2.2.9.4 Ripple ............................................................................................. 2–9
2.2.9.5 Slope............................................................................................. 2–10
2.2.9.6 Image Rejection ........................................................................... 2–10
2.2.9.7 AM to PM ..................................................................................... 2–10
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2.2.9.8 IF Bandwidth ................................................................................ 2–10
2.2.10 Group Delay ....................................................................................... 2–10
2.2.10.1 Linear............................................................................................ 2–10
2.2.10.2 Parabolic....................................................................................... 2–10
2.2.10.3 Ripple ........................................................................................... 2–10
2.2.11 Phase Noise ........................................................................................ 2–11
2.2.11.1 DT-4503, DT-4503/C, DT-4503/D ................................................. 2–11
2.2.11.2 DT-4510, DT-4510/D, DT-4511, DT-4512, DT-4512/E .................. 2–11
2.2.11.3 DT-4513, DT-4513/E ..................................................................... 2–11
2.2.11.4 DT-4503/E .................................................................................... 2–11
CHAPTER 3. INSTALLATION AND STARTUP ...................................3–1
3.1
Unpack and Inspect the Shipment ..................................................... 3–1
3.2 Install the Unit into a Rack Enclosure ................................................. 3–3
3.2.1 Install the Optional Rear Support Brackets Kit..................................... 3–5
3.2.2 Install the Optional Rack Slide Set ....................................................... 3–7
3.3
Connect Prime Power Connection ..................................................... 3–8
3.4
Connect External Cables .................................................................... 3–8
CHAPTER 4. FRONT AND REAR PANEL CONNECTORS ................4–1
4.1 Overview – Cabling Connection Types ............................................... 4–1
4.1.1 Coaxial Cable Connections ................................................................... 4–2
4.1.1.1 Type ‘BNC’ ...................................................................................... 4–3
4.1.1.2 Type ‘TNC’ ...................................................................................... 4–3
4.1.1.3 Type ‘N’ .......................................................................................... 4–3
4.1.1.4 Type ‘F’ ........................................................................................... 4–3
4.1.1.5 Type ‘SMA’...................................................................................... 4–4
4.1.2 D-Subminiature Cable Connections ..................................................... 4–4
4.1.3 RJ-45, RJ-48 Cable Connections ........................................................... 4–5
4.1.4 USB Cable Connections ........................................................................ 4–6
4.2 Unit Connectors ................................................................................ 4–7
4.2.1 Power Connections .............................................................................. 4–8
4.2.1.1 Power Interface Module – Standard AC Unit ................................. 4–8
4.2.1.1.1 AC Operation – Replace the Fuses ........................................... 4–8
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4.2.1.1.2 AC Operation – Apply AC Power .............................................. 4–9
4.2.1.2 Power Interface Module – Optional -48VDC Unit........................ 4–10
4.2.1.2.1 DC Operation – Replace the Fuses ......................................... 4–10
4.2.1.2.2 DC Operation – Apply Power ................................................. 4–11
4.2.2 Unit Ground Connection .................................................................... 4–11
4.2.3 Operational Connections ................................................................... 4–12
4.2.3.1 DT-4500 Series Cable Connections .............................................. 4–15
4.2.4 Removable “Personality” Modules .................................................... 4–16
4.2.4.1 Removable Module Connectors................................................... 4–17
4.2.4.2 Removable Module Operation in Non-Redundant (Standalone)
Applications ............................................................................................... 4–18
4.2.4.3 Removable Module Operation in Redundant Applications ......... 4–19
CHAPTER 5. FIRMWARE UPDATE ....................................................5–1
5.1 Firmware Overview ........................................................................... 5–1
5.1.1 DT-4500 Firmware Update Procedure Summary ................................. 5–1
5.1.2 About Firmware Numbers, File Versions, and Formats ....................... 5–2
5.2 Prepare for the Firmware Download.................................................. 5–3
5.2.1 Required User-supplied Items ............................................................. 5–3
5.2.2 Configure the Terminal Emulator Program .......................................... 5–3
5.2.3 Get the DT-4500 Management IP Address and Firmware Information . 5–3
5.2.3.1 Use the DT-4500 Front Panel to Get the Management IP Address
and Firmware information ........................................................................... 5–4
5.2.3.2 Use the HTTP Interface to Find the Firmware Information ........... 5–4
5.2.3.3 Use the Serial Interface to Find the Firmware Information ........... 5–5
5.2.4 Make a Temporary Folder (Subdirectory) on the User PC ................... 5–5
5.2.4.1 Use Windows Desktop to Make a Folder ....................................... 5–6
5.2.4.2 Use Windows Explorer to Make a Folder....................................... 5–7
5.2.4.3 Use the Run and Browse Windows to Make a Folder.................... 5–7
5.2.4.4 Use Windows Command-line or Command Prompt to Make a Folder
........................................................................................................ 5–8
5.3
Download and Extract the Firmware Update Files .............................. 5–9
5.3.1.1 Use Windows Desktop to View Folder Contents ......................... 5–11
5.3.1.2 Use Windows Command-line to View Folder Contents............... 5–11
5.4
Upload the Firmware Files and Update the DT-4500 Unit ................. 5–11
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5.4.1 Important Considerations .................................................................. 5–11
5.4.2 Steps to “CReflash” Upload the Firmware Files ................................. 5–12
5.4.3 Steps to FTP Upload the Firmware Files ............................................ 5–13
5.4.4 Steps to Complete the Firmware Update Procedure ......................... 5–13
5.4.4.1 Select the Boot Image .................................................................. 5–14
5.4.4.1.1 Use the Front Panel to Select the Boot Image ....................... 5–14
5.4.4.1.2 Use the HTTP Interface to Select the Boot Image ................. 5–14
5.4.4.2 Reboot the Unit............................................................................ 5–14
5.4.4.2.1 Hard-reboot the Unit from the Rear Panel ............................ 5–14
5.4.4.2.2 Soft-reboot the Unit from the HTTP Interface ....................... 5–15
CHAPTER 6. FRONT PANEL OPERATION ........................................6–1
6.1 Front Panel Overview ........................................................................ 6–1
6.1.1 Power Up the Unit ............................................................................... 6–2
6.1.2 LED Indicators....................................................................................... 6–3
6.1.3 Vacuum Fluorescent Display (VFD) ...................................................... 6–4
6.1.4 Keypad.................................................................................................. 6–5
6.2 Front Panel Operation – Menu Matrix ............................................... 6–6
6.2.1 Opening Screen .................................................................................... 6–7
6.2.2 Main Menu........................................................................................... 6–7
6.2.3 (SELECT:) CONFIG (Configuration) Menu Branch ................................. 6–8
6.2.3.1 (CONFIG:) OUTPUT Submenu ........................................................ 6–8
6.2.3.1.1 (CONFIG:) OUTPUT Submenu (OPTIONAL DUAL IF RACK MOUNT
CONVERTERS) ........................................................................................... 6–9
6.2.3.2 (CONFIG:) REMOTE (Remote Control) Submenu ......................... 6–10
6.2.3.2.1 (REMOTE:) Local ..................................................................... 6–10
6.2.3.2.2 (REMOTE:) SERIAL .................................................................. 6–10
6.2.3.2.3 (REMOTE:) ETHERNET ............................................................ 6–11
6.2.3.2.3.1 (REMOTE:) ETHERNETADDRESS................................. 6–11
6.2.3.2.3.2 (REMOTE:) ETHERNETGATEWAY ................................ 6–11
6.2.3.2.3.3 (REMOTE:) ETHERNETSNMP ...................................... 6–12
6.2.3.3 (CONFIG:) REDUNDANCY Submenu ............................................. 6–14
6.2.3.3.1 (REDUNDANCY:) MODE .......................................................... 6–14
6.2.3.3.2 (REDUNDANCY:) Auto/Manual............................................... 6–15
6.2.3.3.3 (REDUNDANCY:) FORCE .......................................................... 6–15
6.2.3.3.4 (REDUNDANCY:) HSB .............................................................. 6–16
6.2.3.4 (CONFIG:) FAULTRECOVERY Submenu ......................................... 6–17
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6.2.3.5 (CONFIG:) COLDSTART Submenu ................................................. 6–17
6.2.4 (SELECT:) MONITOR Menu Branch ..................................................... 6–17
6.2.5 (SELECT:) FAULTS Menu Branch.......................................................... 6–18
6.2.5.1 (FAULTS:) CURRENT ...................................................................... 6–18
6.2.5.2 (FAULTS:) STORED ......................................................................... 6–19
6.2.5.2.1 (FAULTS:) STORED VIEW ..................................................... 6–19
6.2.5.2.2 (FAULTS:) STOREDCLEAR-ALL.............................................. 6–20
6.2.5.3 (FAULTS:) MASK ............................................................................ 6–20
6.2.6 (SELECT:) PRE-SELECTS Menu Branch ................................................ 6–20
6.2.6.1 (PRE-SELECTS:) LOAD ................................................................... 6–21
6.2.6.2 (PRE-SELECTS:) PROGRAM ........................................................... 6–21
6.2.6.3 (PRE-SELECTS:) CLEAR .................................................................. 6–22
6.2.7 (SELECT:) UTILITY Menu Branch ......................................................... 6–22
6.2.7.1 (UTILITY:) TIME (Real-Time Clock) Submenu................................ 6–23
6.2.7.2 (UTILITY:) DISP (VFD Display) Submenu ....................................... 6–23
6.2.7.3 (UTILITY:) FIRMWARE Submenu ................................................... 6–23
6.2.7.3.1 (FIRMWARE:) INFO ................................................................. 6–24
6.2.7.3.1.1 (FIRMWARE:) INFOBOOTROM ................................... 6–24
6.2.7.3.1.2 (FIRMWARE:) INFOIMAGE#1/#2................................ 6–24
6.2.7.3.2 (FIRMWARE:) SELECT ............................................................. 6–25
6.2.7.4 (UTILITY:) AID (Application Identification String) Submenu......... 6–25
6.2.7.5 (UTILITY:) REFOSC (Reference Oscillator Adjustment) Submenu... 6–26
6.2.7.6 (UTILITY:) SLOPE Submenu ........................................................... 6–27
6.2.7.7 (UTILITY:) LAMP-TEST Submenu................................................... 6–27
CHAPTER 7. ETHERNET INTERFACE OPERATION ........................7–1
7.1 Overview .......................................................................................... 7–1
7.1.1 Prerequisites ........................................................................................ 7–2
7.2 SNMP Interface ................................................................................. 7–2
7.2.1 Management Information Base (MIB) Files ......................................... 7–2
7.2.1.1 ComtechEFData Root MIB File ....................................................... 7–2
7.2.1.2 DT-45xx Common MIB File............................................................. 7–3
7.2.1.3 DT-45xx Traps MIB File ................................................................... 7–3
7.2.2 SNMP Community Strings .................................................................... 7–3
7.2.3 SNMP Traps .......................................................................................... 7–4
7.3
Telnet Interface ................................................................................. 7–4
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7.3.1 Using HyperTerminal for Telnet Remote Control Operation................ 7–5
7.3.1.1 Configure HyperTerminal for Telnet Remote Control Operation ... 7–6
7.4 HTTP (Web Server) Interface ............................................................. 7–7
7.4.1 HTTP Interface User Login.................................................................... 7–7
7.4.2 HTTP Interface Features ....................................................................... 7–9
7.4.2.1 Menu Tree ...................................................................................... 7–9
7.4.2.2 Page Navigation.............................................................................. 7–9
7.4.2.3 Page Sections ................................................................................. 7–9
7.4.2.4 Action Buttons.............................................................................. 7–10
7.4.2.4.1 Page Refresh........................................................................... 7–10
7.4.2.5 Drop-down Lists ........................................................................... 7–10
7.4.2.6 Text or Data Entry......................................................................... 7–10
7.5 HTTP Interface Page Examples and Descriptions .............................. 7–11
7.5.1 Home Pages........................................................................................ 7–11
7.5.1.1 Home | Home .............................................................................. 7–11
7.5.1.2 Home | Contact............................................................................ 7–12
7.5.1.3 Home | Support ........................................................................... 7–13
7.5.2 Admin (Administration) Pages ........................................................... 7–14
7.5.2.1 Admin | Access ............................................................................ 7–14
7.5.2.2 Admin | SNMP ............................................................................. 7–16
7.5.3 Config (Configuration) Pages.............................................................. 7–17
7.5.3.1 Config | Converter ....................................................................... 7–17
7.5.3.2 Config | Ref .................................................................................. 7–19
7.5.3.3 Config | Pre-selects ...................................................................... 7–20
7.5.3.4 Config | Utility .............................................................................. 7–21
7.5.3.5 Config | Redundancy.................................................................... 7–23
7.5.4 Status Pages ....................................................................................... 7–24
7.5.4.1 Status | Summary ........................................................................ 7–24
7.5.4.2 Status | Faults .............................................................................. 7–25
CHAPTER 8. SERIAL INTERFACE OPERATION ...............................8–1
8.1
Overview .......................................................................................... 8–1
8.2 Communication Interfaces ................................................................. 8–1
8.2.1 TIA/EIA-485 (RS-485)............................................................................ 8–1
8.2.2 TIA/EIA-232 (RS-232)............................................................................ 8–2
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8.2.3 Ethernet (100BASE-TX) ........................................................................ 8–2
8.3 Access Methods ................................................................................ 8–3
8.3.1 Direct (Physical) Access ........................................................................ 8–3
8.3.2 Indirect (Virtual) Access ....................................................................... 8–3
8.4 Addresses ......................................................................................... 8–4
8.4.1 Physical Address ................................................................................... 8–4
8.4.2 Virtual Address ..................................................................................... 8–4
8.4.3 IP Address............................................................................................. 8–5
8.5 Basic Protocol ................................................................................... 8–5
8.5.1 Transmission Mode .............................................................................. 8–5
8.5.2 Baud Rate ............................................................................................. 8–6
8.5.3 Asynchronous Character Format ......................................................... 8–6
8.5.4 Character Set ........................................................................................ 8–6
8.5.5 Response Timeout ............................................................................... 8–6
8.5.6 Bus Inactivity Requirement .................................................................. 8–6
8.6 Message Structure ............................................................................ 8–7
8.6.1 Start Character ..................................................................................... 8–7
8.6.2 Device Address ..................................................................................... 8–7
8.6.3 Commands/Queries ............................................................................. 8–7
8.6.4 Confirmation Response ........................................................................ 8–8
8.6.5 Error Response ..................................................................................... 8–8
8.6.6 End of Message .................................................................................... 8–8
8.6.6.1 Command Ending ........................................................................... 8–8
8.6.6.2 Response Ending ............................................................................ 8–8
8.7 Remote Operation – Commands/Queries .......................................... 8–9
8.7.1 Command/Query Quick References .................................................... 8–9
8.7.1.1 Utility Commands/Queries Quick Reference ................................. 8–9
8.7.1.2 Configuration Commands/Queries Quick Reference ................... 8–10
8.7.1.3 Redundancy Commands/Queries Quick Reference ..................... 8–10
8.7.1.4 Status Commands/Queries Quick Reference ............................... 8–10
8.7.1.5 Stored Alarm Queries Quick Reference ....................................... 8–11
8.7.2 Utility Commands/Queries ................................................................ 8–11
8.7.2.1 TIM (Time) .................................................................................... 8–11
8.7.2.2 DAT (Date) .................................................................................... 8–11
8.7.2.3 TPE (Time Protocol Enable) .......................................................... 8–12
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8.7.2.4 TPS (Time Protocol Server) .......................................................... 8–12
8.7.2.5 LRS (Local / Remote Status) ......................................................... 8–12
8.7.2.6 MAC (Media Access Control Address).......................................... 8–13
8.7.2.7 IPA (IP Address) ............................................................................ 8–13
8.7.2.8 IPG (IP Gateway) .......................................................................... 8–13
8.7.2.9 SPA (Set Physical Address)............................................................ 8–14
8.7.2.10 SBR (Set Baud Rate) ..................................................................... 8–14
8.7.2.11 CON (Set LCD Contrast) ................................................................ 8–14
8.7.2.12 LCD (Set LCD Brightness) .............................................................. 8–15
8.7.2.13 SSM (Screen Saver Mode) ............................................................ 8–15
8.7.2.14 SST (Screen Saver Timeout) ......................................................... 8–15
8.7.2.15 VFD (VFD Brightness) ................................................................... 8–16
8.7.2.16 SRO (Set Reference Oscillator Tuning) ......................................... 8–16
8.7.2.17 SSA (Converter Slope Adjustment) .............................................. 8–16
8.7.2.18 RET (Equipment Type) .................................................................. 8–17
8.7.2.19 PNM (Part Number) ..................................................................... 8–17
8.7.2.20 FRW (Legacy Firmware Information) ........................................... 8–17
8.7.2.21 FRM (Firmware Information) ....................................................... 8–18
8.7.2.22 IMG (Firmware Image) ................................................................. 8–18
8.7.2.23 AID (Application Identification).................................................... 8–19
8.7.2.24 FRB (Force Reboot) ...................................................................... 8–19
8.7.3 Configuration Commands / Queries .................................................. 8–20
8.7.3.1 FRE (Frequency) ........................................................................... 8–20
8.7.3.2 IFF (IF Frequency) ......................................................................... 8–20
8.7.3.3 ATT (Attenuation) ......................................................................... 8–21
8.7.3.4 CLD (Cold Start) ............................................................................ 8–21
8.7.3.5 MUT (RF Mute)............................................................................. 8–21
8.7.3.6 CMM (Configure Mute Mode) ..................................................... 8–22
8.7.3.7 CRM (Redundancy Mute Mode) .................................................. 8–22
8.7.3.8 AFR (Auto Fault Recovery) ........................................................... 8–22
8.7.3.9 PGM (Program Pre-select) ........................................................... 8–23
8.7.3.10 DPS (Display All Pre-selects)......................................................... 8–23
8.7.3.11 CLR (Clear Pre-select Configuration) ............................................ 8–24
8.7.3.12 SEL (Select Pre-select Configuration) ........................................... 8–24
8.7.4 Operating Modes ............................................................................... 8–24
8.7.4.1 RED (Redundant Mode) ............................................................... 8–24
8.7.4.2 ICT (Initialize Chain Command) .................................................... 8–25
8.7.4.3 SAM (Switching Automatic/Manual Mode) ................................. 8–25
8.7.4.4 FBU (Force Backup) ...................................................................... 8–26
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8.7.5 Status Queries .................................................................................... 8–27
8.7.5.1 RCS (Configuration Status) ........................................................... 8–27
8.7.5.2 RMS (Maintenance Status) .......................................................... 8–27
8.7.5.3 RUS (Utility Status) ....................................................................... 8–28
8.7.5.4 RAS (Alarm Status) ....................................................................... 8–28
8.7.5.5 SAS (Summary Alarm Status) ....................................................... 8–28
8.7.5.6 TSC (Terminal Status Change) ...................................................... 8–29
8.7.5.7 PACRCS (Packed Configuration Status)......................................... 8–29
8.7.5.8 PACRMS (Packed Maintenance Status) ........................................ 8–30
8.7.5.9 PACRAS (Packed Alarm Status) ..................................................... 8–30
8.7.5.10 PACRUS (Packed Utility Status) .................................................... 8–31
8.7.6 Stored Alarms..................................................................................... 8–32
8.7.6.1 TSA (Total Stored Alarms)............................................................. 8–32
8.7.6.2 CAS (Clear All Stored Alarms) ....................................................... 8–32
8.7.6.3 LAA (List All Alarms) ..................................................................... 8–32
8.8
Error Processing .............................................................................. 8–33
8.8.1.1 General Errors .............................................................................. 8–33
8.8.1.2 Configuration Errors ..................................................................... 8–33
8.8.1.3 Mode Errors ................................................................................. 8–33
8.8.1.4 Time-Outs..................................................................................... 8–33
APPENDIX A. REDUNDANT SYSTEM OPERATION ........................ A–1
A.1
Redundancy Overview ...................................................................... A–1
A.2 Backup Converter (BU) ...................................................................... A–2
A.2.1 High Speed Bus (HSB)........................................................................... A–2
A.2.2 Removable “Personality” Modules ...................................................... A–2
A.2.2.1 Converter Switching ....................................................................... A–2
A.3 Redundant Configurations................................................................. A–3
A.3.1 1:1 Redundant Systems........................................................................ A–3
A.3.2 1:N Redundant Systems ....................................................................... A–7
A.4 Redundant System Configuration ...................................................... A–9
A.4.1 Redundant System Configuration Using the Front Panel..................... A–9
A.4.1.1 Initial Configuration ....................................................................... A–9
A.4.1.2 Automatic Configuration Verification .......................................... A–10
A.4.1.3 Manual Configuration and Verification ........................................ A–12
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A.4.2 Redundant System Configuration Using the DT-4500 HTTP Interface
............................................................................................................ A–14
A.4.3 Offset Adjustment .............................................................................. A–16
A.5
Redundancy Systems – Converter Management ............................... A–16
APPENDIX B. MAINTENANCE AND TROUBLESHOOTING ............ B–1
B.1
Overview .......................................................................................... B–1
B.2 Maintenance Testing ......................................................................... B–2
B.2.1 Sample Test Points ............................................................................... B–2
B.2.2 Troubleshooting ................................................................................... B–2
B.2.3 Down Converter Faults......................................................................... B–3
B.2.3.1 Prime Power ................................................................................... B–3
B.2.3.2 DC Power Supply Module .............................................................. B–3
B.2.3.3 RF Converter Module ..................................................................... B–4
B.2.3.4 Synthesizer Sum Loop Module....................................................... B–4
B.2.3.5 Synthesizer Fine Step Module........................................................ B–4
B.2.3.6 Reference Oscillator Module ......................................................... B–4
B.2.3.7 Temperature Fault .......................................................................... B–4
B.2.4 Removable “Personality” Modules ...................................................... B–5
B.3
Spares ............................................................................................... B–6
B.4 Redundancy Systems – Converter Management ................................. B–6
B.4.1 Remove a Faulted Converter................................................................ B–6
B.4.2 Install a Replacement Converter .......................................................... B–7
TABLES
Table 4-1. ‘Ethernet’ M&C Interface Connector Pinout.................................... 4–13
Table 4-2. ‘J1 | COM1’ 2-Wire EIA-485 Pinout .................................................. 4–13
Table 4-3. ‘J1 | COM1’ 4-Wire EIA-485 Pinout .................................................. 4–13
Table 4-4. ‘J1 | COM1’ EIA-232C Pinout ............................................................ 4–13
Table 4-5. ‘P1 | RELAY’ Pinout ........................................................................... 4–14
Table 4-6. ‘J3 | HSB’ Data Interface Pinout ....................................................... 4–17
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FIGURES
Figure 1-1. DT-4500 Series Down Converters (DT-4503 shown) ........................ 1–1
Figure 1-2. DT-4500 Series Down Converter Physical Configuration .................. 1–2
Figure 1-3. Typical Functional Block Diagram (DT-4512 shown)......................... 1–4
Figure 1-4. DT-4500 Series Down Converter Dimensional Envelope .................. 1–7
Figure 1-5. Front Panel View (DT-4503 Shown) .................................................. 1–8
Figure 1-6. Rear Panel (with IOM) – Current Production Unit ......................... 1–10
Figure 1-7. Rear Panel (with RSM) – Initially Released Chassis (OBSOLETE) .... 1–11
Figure 3-1. Unpack and Inspect the Shipment.................................................... 3–1
Figure 3-2. Install the Unit into a Rack Enclosure ............................................... 3–4
Figure 3-3. Install the Optional Rear-Mounting Support Brackets Kit ................ 3–5
Figure 3-4. Install the Optional Rack Slide Set .................................................... 3–7
Figure 4-1. Coaxial Connector Examples ............................................................. 4–2
Figure 4-2. D-Subminiature Connector Examples ............................................... 4–4
Figure 4-3. RJ-45/RJ-48 Connector Example ....................................................... 4–5
Figure 4-4. USB Connector Examples .................................................................. 4–6
Figure 4-5. DT-4500 Series Rear and Front Panels (DT-4503 Current Production
Chassis shown)............................................................................................. 4–7
Figure 4-6. DT-4500 Series Rear Panel – Initially Released Chassis (OBSOLETE)
(with RSM) ................................................................................................... 4–7
Figure 4-7. Standard AC Power Module .............................................................. 4–8
Figure 4-8. Replace the AC Fuses ........................................................................ 4–8
Figure 4-9. Apply AC Power to the Unit .............................................................. 4–9
Figure 4-10. Optional DC Power Module .......................................................... 4–10
Figure 4-11. Apply DC Power to the Unit .......................................................... 4–11
Figure 4-12. Unit Ground Connection ............................................................... 4–11
Figure 4-13. Rear Panel Operational Connections (with IOM) ......................... 4–12
Figure 4-14. Front Panel Sample Test Point Connections ................................. 4–14
Figure 4-15. DT-4500 Series Cabling Example (with RSM)................................ 4–15
Figure 4-16. “Personality” Module Examples ................................................... 4–16
Figure 4-17. DT-4500 Standalone Cabling Example to IOM.............................. 4–18
Figure 4-18. DT-4500 Standalone Cabling Example to RSM ............................. 4–18
Figure 4-19. RSM Switching Schematic ............................................................. 4–19
Figure 6-1. Front Panel View (DT-4503 Shown) .................................................. 6–1
Figure 6-2. Rear Panel – Standard and Optional Power Interfaces..................... 6–2
Figure 7-1. Telnet Interface Example – Windows Command-line....................... 7–4
Figure 7-2. Telnet Interface Example – HyperTerminal ....................................... 7–5
Figure 7-3. Configure HyperTerminal .................................................................. 7–6
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Figure 7-4. HTTP Interface “Splash” Page Example ............................................ 7–8
Figure 7-5. HTTP Interface Menu Tree (FW Ver. 1.3.4) ....................................... 7–9
Figure 7-6. ‘Home | Home’ Page ...................................................................... 7–11
Figure 7-7. ‘Home | Contact’ Page.................................................................... 7–12
Figure 7-8. ‘Home | Support’ Page ................................................................... 7–13
Figure 7-9. ‘Admin | Access’ Page ..................................................................... 7–14
Figure 7-10. ‘Admin | SNMP’ Page .................................................................... 7–16
Figure 7-11. ‘Config | Converter’ Page ............................................................. 7–17
Figure 7-12. ‘Config | Ref’ Page ........................................................................ 7–19
Figure 7-13. ‘Config | Pre-selects’ Page ............................................................ 7–20
Figure 7-14. ‘Config | Utility’ Page .................................................................... 7–21
Figure 7-15. ‘Config | Redundancy’ Page.......................................................... 7–23
Figure 7-16. ‘Status | Summary’ Page .............................................................. 7–24
Figure 7-17. ‘Status | Faults’ Page .................................................................... 7–25
Figure A-1. 1:1 Redundant Configuration –Single Source IF Output (with IOM and
RSM)............................................................................................................. A–4
Figure A-2. 1:1 Redundant Configuration Diagram – Single Source IF Output (with
IOM and RSM).............................................................................................. A–4
Figure A-3. 1:1 Redundant Configuration Diagram – Single Source RF Input (with
IOM and EQM) ............................................................................................. A–5
Figure A-4. EQM Panel – Connector Locations ................................................... A–5
Figure A-5. 1:1 Redundant Configuration – Dual Source IF Output ................... A–5
Figure A-6. 1:1 Redundant Configuration Diagram – Dual Source IF Output (with
IOM and RSM).............................................................................................. A–6
Figure A-7. Dual Source 1:N Redundant Configuration (with PSM and RSM) .... A–7
Figure A-8. Dual Source 1:N Redundant Configuration Diagram (with PSM and
RSM)............................................................................................................. A–8
Figure A-9. Front Panel Example – 1:3 System Configuration ............................ A–9
Figure A-10. Front Panel Example – System in AUTO Redundancy Mode ....... A–10
Figure A-11. Front Panel Example – Down Converter #01 Backup .................. A–11
Figure A-12. Front Panel Example – Down Converter #01=MAN, Others=AUTO
................................................................................................................... A–12
Figure A-13. Front Panel Example – Down Converter #01 Forced Backup ...... A–13
Figure A-14. ‘Config | Redundancy’ Page ......................................................... A–14
Figure B-1. DT-4500 Signal and Interconnecting Diagram – 1:N Redundancy
“Inline” Unit Example (with RSM)................................................................ B–1
Figure B-2. DT-4500 Front Panel (DT-4503 Shown) ............................................ B–2
Figure B-3. “Personality” Module Examples ....................................................... B–5
xvi
PREFACE
About this Manual
Comtech EF Data publication DT-4572 X-Band Down Converter
Installation and Operation Manual (CEFD P/N MN/DT4572.IOM)
documents the X-Band version of this product.
This manual provides installation and operation information for the Comtech EF
Data DT-4500 Series C- and Ku-Band Down Converters. This document is
intended for the persons responsible for the operation and maintenance of the
DT-4500 family of products.
Revision 2 of this manual represents a rewrite from Revision 1, in order to
document the current production models for the DT-4500 Series C- and Ku-Band
Down Converters, and to update the manual to the current Comtech EF Data
Technical Publications Department Standards and Practices. This manual also
replaces the Comtech EF Data publication DT-4500-A Series Downconverters
Installation and Operation Manual (CEFD P/N MN-DT4500A).
Disclaimer
Comtech EF Data has reviewed this manual thoroughly in order to provide an
easy-to-use guide to this 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.
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DT-4500 Series C- and Ku-Band Down Converters
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Revision 2
If there are any questions regarding this equipment or the information in this
manual, please contact Comtech EF Data Product Support.
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.
Warnings, Cautions, Notes, and References
A WARNING indicates a potentially hazardous situation that, if not
avoided, could result in death or serious injury.
A 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.
A NOTE gives you important information about a task or the
equipment.
A REFERENCE directs you to important operational information or
details furnished elsewhere, either in the manual or in adjunct
Comtech EF Data publications.
Examples of Multi-Hazard Notices
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Recommended Standard Designations
Electronic Industries Association (EIA) designations supersede Recommended
Standard (RS) designations. Reference to the old RS designations may appear
where it might concern actual text (e.g., RS-232) displayed on the product panels
and on screens or pages in the Serial Remote or HTTP (Web Server) Interfaces.
All other references in the manual refer to EIA designations.
CAUTION
It is important that you review and understand the Safety and
Compliance information that follows.
Safety and Compliance
Electrical Safety and Compliance
The unit complies with the EN 60950 Safety of Information Technology
Equipment (Including Electrical Business Machines) safety standard.
Electrical Installation
CAUTION
CONNECT THE UNIT TO A POWER SYSTEM THAT HAS SEPARATE
GROUND, LINE AND NEUTRAL CONDUCTORS. DO NOT CONNECT THE
UNIT WITHOUT A DIRECT CONNECTION TO GROUND.
Sect 4.2.2 Unit Ground Connection
Operating Environment
CAUTION
DO NOT OPERATE THE UNIT IN ANY OF THESE EXTREME OPERATING
CONDITIONS:
• AMBIENT TEMPERATURES LESS THAN 0° C (32° F) OR MORE
THAN 50° C (122° F).
• PRECIPITATION, CONDENSATION, OR HUMID ATMOSPHERES OF
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DT-4500 Series C- and Ku-Band Down Converters
Preface
•
•
•
•
MN/DT4500.IOM
Revision 2
MORE THAN 95% RELATIVE HUMIDITY.
UNPRESSURIZED ALTITUDES OF MORE THAN 3048 METRES
(10,000 FEET).
EXCESSIVE DUST.
FLAMMABLE GASES.
CORROSIVE OR EXPLOSIVE ATMOSPHERES.
European Union Radio Equipment and Telecommunications
Terminal Equipment (R&TTE) Directive (1999/5/EC) and EN
301 489-1
Independent testing verifies that the unit complies with the European Union
R&TTE Directive, its reference to EN 301 489-1 (Electromagnetic compatibility
and Radio spectrum Matters [ERM]; Electromagnetic Compatibility [EMC]
standard for radio equipment and services, Part 1: Common technical
requirements), and the Declarations of Conformity for the applicable directives,
standards, and practices that follow:
European Union Electromagnetic Compatibility (EMC)
Directive (2004/108/EC)
•
•
•
•
•
EN 55022 Class A (Emissions) – Limits and Methods of Measurement
of Radio Interference Characteristics of Information Technology
Equipment.
EN 55024 (Immunity) – Information Technology Equipment:
Immunity Characteristics, Limits, and Methods of Measurement.
EN 61000-3-2 – Harmonic Currents Emission
EN 61000-3-3 – Voltage Fluctuations and Flicker.
Federal Communications Commission Federal Code of Regulation FCC
Part 15, Subpart B.
CAUTION
TO ENSURE THAT THE UNIT COMPLIES WITH THESE
STANDARDS, OBEY THESE INSTRUCTIONS:
•
Operate the unit with its cover on at all times.
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DT-4500 Series C- and Ku-Band Down Converters
Preface
•
•
•
MN/DT4500.IOM
Revision 2
Use Type 'D' connectors that have back-shells with continuous
metallic shielding.
Type ‘D’ cabling must have a continuous outer shield (either foil or
braid, or both). The shield must be bonded to the back-shell.
Use coaxial cable that is of good quality for connections to the Switch
Module Type ‘N’ female connectors.
European Union Low Voltage Directive (LVD) (2006/95/EC)
Symbol
Description
<HAR>
Type of power cord required for use in the European Community.
CAUTION: Double-pole/Neutral Fusing
ACHTUNG: Zweipolige bzw. Neutralleiter-Sicherung
!
International Symbols
Symbol
Definition
Symbol
Definition
Alternating Current
Protective Earth
Fuse
Chassis Ground
For additional symbols, refer to Warnings, Cautions and Notes
listed earlier in this Preface.
European Union RoHS Directive (2002/95/EC)
This unit satisfies (with exemptions) the requirements specified in the
European Union Directive on the Restriction of Hazardous Substances in
Electrical and Electronic Equipment (EU RoHS, Directive 2002/95/EC).
European Union Telecommunications Terminal Equipment
Directive (91/263/EEC)
In accordance with the European Union Telecommunications Terminal
Equipment Directive 91/263/EEC, the unit should not be directly
connected to the Public Telecommunications Network.
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CE Mark
Comtech EF Data declares that the unit meets the necessary
requirements for the CE Mark.
Product Support
For all product support, please call:
+1.240.243.1880
+1.866.472.3963 (toll free USA)
Comtech EF Data Headquarters
http://www.comtechefdata.com
Comtech EF Data Corp.
2114 West 7th Street
Tempe, Arizona USA 85281
+1.480.333.2200
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
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Revision 2
method (i.e., Air, Express, Surface) as the equipment was sent to Comtech EF
Data.
All equipment returned for warranty repair must have a valid RMA number
issued prior to return and be marked clearly on the return packaging. Comtech
EF Data strongly recommends all equipment be returned in its original
packaging.
Comtech EF Data Corporation’s obligations under this warranty are limited to
repair or replacement of failed parts, and the return shipment to the buyer of
the repaired or replaced parts.
Limitations of Warranty
The warranty does not apply to any part of a product that has been installed,
altered, repaired, or misused in any way that, in the opinion of Comtech EF Data
Corporation, would affect the reliability or detracts from the performance of any
part of the product, or is damaged as the result of use in a way or with
equipment that had not been previously approved by Comtech EF Data
Corporation.
The warranty does not apply to any product or parts thereof where the serial
number or the serial number of any of its parts has been altered, defaced, or
removed.
The warranty does not cover damage or loss incurred in transportation of the
product. The warranty does not cover replacement or repair necessitated by loss
or damage from any cause beyond the control of Comtech EF Data Corporation,
such as lightning or other natural and weather related events or wartime
environments.
The warranty does not cover any labor involved in the removal and or
reinstallation of warranted equipment or parts on site, or any labor required to
diagnose the necessity for repair or replacement.
The warranty excludes any responsibility by Comtech EF Data Corporation for
incidental or consequential damages arising from the use of the equipment or
products, or for any inability to use them either separate from or in combination
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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.
xxiv
Chapter 1. INTRODUCTION
1.1 Overview
Figure 1-1. DT-4500 Series Down Converters (DT-4503 shown)
Comtech EF Data’s DT-4500 Series C- and Ku-Band Down Converters (Figure 1-1)
are designed for the transmission of SCPC, DAMA and TDMA signals in
communication systems or satellite downlink data systems. These converters are
also used in communications system applications with full transponder HDTV and
analog TV.
The DT-4500 Series Down Converter family of products comprises:
• C-Band Units:
DT-4503; DT-4503/C; DT-4503/D; DT-4503/E
• Ku-Band Units:
DT-4510; DT-4510/D; DT-4511; DT-4512; DT-4512/E; DT-4513; DT-4513/E
1) See Chapter 2. SPECIFICATIONS for individual product
specifications.
2) Comtech EF Data publication DT-4572 X-Band Down Converter
Installation and Operation Manual (CEFD P/N MN/DT4572.IOM)
documents the X-Band version of this product.
1–1
DT-4500 Series C- and Ku-Band Down Converters
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MN/DT4500.IOM
Revision 2
1.2 Functional Description
Figure 1-2 shows the DT-4500 chassis with its top cover removed. The major
chassis components and module assemblies are:
• Signal Path Module
• Step Loop Module
• Monitor & Control Assembly
• Removable “Personality” Module (IOM, PSM, TSM, EQM, or RSM installs
into rear chassis slot)
• Reference Oscillator Assembly
• Sum Loop Module
• Power Supply Assembly
Figure 1-2. DT-4500 Series Down Converter Physical Configuration
1–2
DT-4500 Series C- and Ku-Band Down Converters
Introduction
1.2.1
MN/DT4500.IOM
Revision 2
Applications
The DT-4500 is a down converter. It converts the input RF frequency to an output
IF frequency. The DT-4500 operates over the RF frequency range with a typical
gain of 35 dB. The RF output level is +10 dBm @ 1 dB compression. This permits
longer cable runs and compensates for splitting networks without requiring
options such as external line amplifiers.
The phase noise performance exceeds the Intelsat phase noise mask for IBS and
IDR services by more than 9 dB. This allows high capacity earth stations to add
more demodulators and still meet transmission standards. The close-in phase
noise is also very low. This makes the converter ideal for low bit rate digital
circuits such as those used in DAMA hub earth stations.
Depending on the application, the converter chassis rear panel module slot
accepts an Input/Output Module (IOM), Polarity Switch Module (PSM), Transmit
Switch Module (TSM), Equalizer Module (EQM), or Receive Switch Module (RSM).
The converter RF, IF, and High-Speed Bus (HSB) connectors are integral to the
installed module.
Non-redundant (also called standalone or single thread) units employ an IOM for
switching the RF output. The IOM is also used for unit testing.
In redundancy applications, where converters are "Daisy Chained" to provide
distributed online protection switching to a backup converter (BU), a TSM is used
in place of an IOM. The TSM contains RF and IF transfer switches. Type ‘N’ female
connectors are provided for the RF loop, and 50Ω or 75Ω BNC female connectors
are provided for the IF loop.
The "Daisy Chain" configuration is designed to chain the IF output of up to twelve
(12) online converters through RSMs terminating in a BU. When a fault occurs in
an online converter, the RSM in the faulted converter is commanded to switch to
the BU.
The BU in the "Daisy Chain" communicates with the online converters through
the installed module’s High Speed Bus (HSB data interface). When faults are
detected, the BU reconfigures itself to replace the faulted online converter. The
BU also uses the HSB to monitor configuration changes made to the online
converters by either remote control or front panel command inputs.
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The BU performs fault detection, self-reconfiguration, and logical switching
functions. If the BU has a fault, it is prevented from performing the protectionswitching task. If the BU does not have a fault, it assumes the frequency and
attenuation of the faulted online converter, and compensates for the chain
losses.
Changes in frequency, attenuation or polarity are entered into the backup table
as they are made, as well as information from new online units. The HSB does
not interfere with the remote control communications link for access to any of
the converters in the "Daisy Chain".
1.2.2
RF Signal Conversion
Figure 1-3. Typical Functional Block Diagram (DT-4512 shown)
Figure 1-3 depicts the operational block diagram for a typical DT-4500 Series
Down Converter in single thread (standalone) applications. See Appendix A.
REDUNDANT SYSTEM OPERATION for more information about the DT-4500’s use
in redundant applications.
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DT-4500 Series C- and Ku-Band Down Converters
Introduction
MN/DT4500.IOM
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Using the example of a DT-4512 Ku-Band Down Converter:
RF signal processing is accomplished when the RF input of 12200 to 12750 MHz,
at a typical level of -45 dBm, is mixed in the first mixer with a 13280 to 13830
MHz synthesizer signal from a multiplier, in 125 KHz fine tuning steps. The
synthesizer is locked to a 5/10 MHz reference oscillator. (The first mixer is located
in the converter Signal Path Module, and the synthesizer consists of a
Coarse/Fine Step Module and a Sum Loop Module.)
The intermediate IF of 1080 MHz is mixed in the second mixer with the1150 MHz
IFLO providing a +20 dBm @ 1 dB compression, 70 MHz IF output. (The second
mixer is also located in the converter Signal Path Assembly.)
1.2.3
Monitor & Control
The Monitor & Control Assembly is designed to monitor the functions of the
DT-4500, and provide the local and remote control command inputs to the
converter.
For Local Monitor & Control: Local operator input commands and the status of
the DT-4500 display on the front panel Vacuum Fluorescent Display (VFD). The
unit indicates converter faults via the front panel “FAULT” and “STORED FAULT”
LED indicators. Use the VFD and local keypad to browse and manage the stored
events and faults log.
For Remote Monitor & Control: All configuration control, status retrieval and
adjustments are available with connections to the converter rear panel:
• A DB-9F selectable EIA-232C/EIA-485 ‘J1 | COM1’ female connector
interface provides serial-based remote control communications. ASCII
commands and queries are issued through the serial remote interface.
• A female RJ-45 100Base-TX ‘Ethernet’ connector interface provides
Ethernet-based remote monitor and control capability via SNMP, Telnet,
or the HTTP (Web Server) Interface.
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1.3 Down Converter Features
1.3.1
Physical Description
The DT-4500 features a 1RU-high (1.75”) 19-inch wide chassis that is designed
for rack mounting into a standard 19-inch (48.26 cm) equipment rack. The unit
may also be mounted into the rack using the provided slide mechanisms to allow
service without removal from the rack. The unit may be freestanding if desired.
For:
•
•
•
•
•
Rack installation and
mounting instructions
Local control operating
instructions and procedures
Remote control operating
instructions and procedures
See:
Chapter 3. INSTALLATION
Chapter 6. FRONT PANEL
OPERATION
Chapter 7. ETHERNET INTERFACE
OPERATION and
Chapter 8. SERIAL INTERFACE
OPERATION
Redundant system operating Appendix A. REDUNDANT
instructions and procedures SYSTEM OPERATION
Maintenance and
Appendix B. MAINTENANCE AND
troubleshooting procedures TROUBLESHOOTING
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1.3.2 Dimensional Envelope
Dimensions are shown in inches and [millimeters].
Figure 1-4. DT-4500 Series Down Converter Dimensional Envelope
1–7
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Introduction
1.3.3
MN/DT4500.IOM
Revision 2
Front Panel
(TOP) Initially Released Chassis
(BOTTOM) Current Production Unit
Figure 1-5. Front Panel View (DT-4503 Shown)
The DT-4500 front panel (Figure 1-5) provides, from left to right):
Item 1 – Rack Handles
These handles ease removal and replacement of the chassis into the userprovided rack enclosure.
Item 2 – Sample Points
Use these test point connections to monitor the RF input and the IF output:
• The ‘RF’ Type ‘SMA’ female connector provides the RF input. An optional
RF LO monitor is available that replaces this RF monitor connection.
• The ‘IF’ BNC female connector provides the IF output.
Item 3 – LED Indicators
The Light-Emitting Diode (LED) Indicators for the initially-released
chassis and the current production unit differ as follows:
(LEFT) LEDs – Initially Released Chassis
(RIGHT) LEDs – Current Production Unit
These six Light-Emitting Diode (LED) indicators convey operational states as
follows:
1–8
DT-4500 Series C- and Ku-Band Down Converters
Introduction
MN/DT4500.IOM
Revision 2
POWER ON
Lights GREEN when prime power is applied to the unit.
RECEIVE (INITIALLY RELEASED CHASSIS)
OUTPUT ENABLE (CURRENT PRODUCTION UNIT)
Lights AMBER when the transmit function is operational.
REMOTE
Lights AMBER when the unit is in Remote Communication Mode. Local
monitoring is possible, but unit configuration is possible using either Serial or
Ethernet remote control.
Remains OFF when the unit is in Local Mode. Serial or Ethernet remote
monitoring is possible, but unit configuration is possible using only the front
panel.
ON LINE
Lights AMBER when the unit is online and carrying traffic.
FAULT
Lights RED when a fault condition exists.
STORED FAULT
Lights RED when a fault condition has been logged and stored.
Item 3 – Vacuum Fluorescent Display (VFD)
The displays for the initially-released chassis and the current
production unit differ as follows:
(LEFT) Liquid Crystal Display (LCD) – Initially Released Chassis
(RIGHT) Vacuum Fluorescent Display (VFD) – Current Production Unit
The VFD is an active display showing two lines of 24 characters each. It produces
a blue light with adjustable brightness. Nested menus display all available
options and prompt you to carry out a required action.
1–9
DT-4500 Series C- and Ku-Band Down Converters
Introduction
MN/DT4500.IOM
Revision 2
Item 4 – Keypad
The keypads for the initially-released chassis and the current
production unit differ as follows:
(LEFT) “Square” Button Keypad – Initially Released Chassis
(RIGHT) “Round” Button Keypad – Current Production Unit
The keys for the current production unit keypad have a positive ‘click’ action that
provides tactile feedback. Enter data via the keypad. Data, prompts, and
messages are displayed on the VFD.
1.3.4
Rear Panel
External cables are attached to sample point connectors located on the front
panel of the unit (Figure 1-5), and to the operational connectors located on the
rear panel of the unit (Figure 1-6 or Figure 1-7).
(TOP) Optional -48VDC Unit Power Interface
(BOTTOM) Standard AC Unit with Transmit Switch Module (TSM)
Figure 1-6. Rear Panel (with IOM) – Current Production Unit
The DT-4500 chassis, as initially released (Figure 1-7), does not provide
an ‘Ethernet’ 100BaseTX RJ-45 port. Ethernet interface operation is not
1–10
DT-4500 Series C- and Ku-Band Down Converters
Introduction
MN/DT4500.IOM
Revision 2
available on these legacy products.
Figure 1-7. Rear Panel (with RSM) – Initially Released Chassis (OBSOLETE)
From left to right:
Item 1 – Power Connection (part of Power Supply module)
• The standard AC unit features a 90-250VAC Primary Input Power Supply
(IEC-60320 Type C14 three-prong male connector)
• The optional -48VDC unit features a terminal block power interface.
Item 2 – Unit Fusing (part of Power Supply module)
CAUTION
FOR CONTINUED OPERATOR SAFETY, ALWAYS REPLACE THE FUSES
WITH THE CORRECT TYPE AND RATING.
The unit uses two Slo-Blo fuses, one each for line and neutral fusing:
• The standard AC unit retains two T2.0A 5x20 mm fuses (250VAC time lag)
in a press-fit fuse holder.
• The optional DC unit retains two T3.15A 20 mm fuses in a press-fit fuse
holder.
Item 3 – Power Switch (part of Power Supply Module)
Use this switch to turn power to the unit on or off.
Item 4 – ‘J2A | REF IN’ Utility Connector
Use this BNC female connector to supply a 5/10 MHz master reference to the
entire chassis.
Item 5 – ‘J2B | REF OUT’ Utility Connector (OPTIONAL)
Use this optional BNC female connector to provide a 5/10 MHz external
reference for customer use.
Item 6 – ‘ETHERNET’ Ethernet Management Utility Port
Use this 100BaseTX Ethernet RJ-45 port for operation of the Ethernet remote
control interfaces.
1–11
DT-4500 Series C- and Ku-Band Down Converters
Introduction
MN/DT4500.IOM
Revision 2
Item 7 – ‘J1 | COM1’ Serial Management Utility Connector
Use this DB-9F EIA-232C/EIA-485 connector for operation of the Serial remote
control interface.
Item 8 – ‘P1 | RELAY’ Utility Connector
Use this DB-9F connector to access the Form C Alarms (relay closures).
Item 9 – Removable “Personality”Module
Depending on the application, the converter chassis rear panel module slot
accepts an Input/Output Module (IOM), Polarity Switch Module (PSM), Transmit
Switch Module (TSM), Equalizer Module (EQM), or Receive Switch Module (RSM).
The converter RF, IF, and High-Speed Bus (HSB) connectors are integral to the
installed module.
Contact Comtech EF Data Product Support for further information
about the available modules. Also see:
• Chapter 2. SPECIFICATIONS
• Chapter 4. FRONT AND REAR PANEL CONNECTORS
• Appendix A. REDUNDANT SYSTEM OPERATION
Item 10 – Unit Ground Lug
Use this #10-32 stud as the command chassis ground.
CAUTION
PROPER GROUNDING PROTECTION IS REQUIRED. You must connect the
equipment to the protective earth connection at all times. Use this ground
stud during installation, configuration, and operation.
1–12
Chapter 2. SPECIFICATIONS
Comtech EF Data publication DT-4572 X-Band Down Converter
Installation and Operation Manual (CEFD P/N MN/DT4572.IOM)
documents the X-Band version of this product.
These specifications are typical for all C- and Ku-Band versions of this
product unless noted.
2.1 Physical and Environmental Specifications
2.1.1
•
•
•
2.1.2
•
•
Regulatory Compliance
“CE” as follows:
o EN 50082-1 (EMC/Generic Immunity)
o EN 55022 Class B (Emissions)
o EN 55024 (Immunity)
o EN 60950 (Safety)
FCC Part 15 Subpart B
RoHS-Compliant
Physical Specifications
Dimensions: 1.75 H x 19.00 W x 22 D inches
(44.4 mm H x 482.6 mm W x 558.8 mm D)
Weight:
15 lbs (6.8 kg)
2–1
DT-4500 Series C- and Ku-Band Down Converters
Specifications
2.1.3
•
•
Mean Time Between Failures (MTBF)
49,740 hrs as calculated
>100,000 hrs based on field experience
2.1.4
•
•
Temperature Range
Operating:
Storage:
2.1.5
•
•
MN/DT4500.IOM
Revision 2
32° to 122° F (0° to 50° C)
-4° to 158 F° (-20° to 70° C)
Humidity (Non-condensing)
Operating:
Storage:
2.1.6
0 to 95% Relative maximum
99% maximum
Altitude
10,000 ft Mean Sea Level (MSL)
2.1.7
Front Panel Features
2.1.7.1
Sample Test Point Connectors
•
•
STANDARD:
o (1X) ‘RF’ – Type ‘SMA’female, -20 dBc nominal
o (1X) ‘IF’ – BNC female, -20 dBc nominal
OPTIONAL:
RF LO monitor available (0 dBm nominal – replaces ‘RF’ sample point)
2.1.7.2
LED Monitoring
Six Status LEDs:
• POWER ON (GREEN)
• OUTPUT ENABLE (AMBER)
• REMOTE (AMBER)
• ON LINE (AMBER)
2–2
DT-4500 Series C- and Ku-Band Down Converters
Specifications
•
•
MN/DT4500.IOM
Revision 2
FAULT (RED)
STORED FAULT (RED)
2.1.7.3
Vacuum Fluorescent Display (VFD)
2 lines, 24 characters per line.
2.1.7.4
Keypad
Six Keys:  (LEFT),  (RIGHT),  (UP),  (DOWN), ENTER, CLEAR
2.1.8
Rear Panel Features
2.1.8.1
Chassis Power, Fusing, and Grounding
2.1.8.1.1 Power Supply Input
•
•
STANDARD AC:
o 90-250VAC, 47-63 Hz frequency, 60W dissipation, auto-ranging.
o IEC-60320 Type C14 (male) three-prong connector, for connection
with an IEC-60320 Type C13 (female) three-prong plug power cord
for 90-125VAC or 205-240VAC power sources.
OPTIONAL DC:
-48VDC via terminal block power interface.
2.1.8.1.2 Power Consumption
<75W, 55W typical
2.1.8.1.3 Fusing
•
•
STANDARD AC:
(2X) T2.00A 5mm x 20 mm, 250VAC time lag
OPTIONAL DC:
(2X) T6.25A 6.3 mm x 32 mm (3AG), 250VAC time lag
2–3
DT-4500 Series C- and Ku-Band Down Converters
Specifications
MN/DT4500.IOM
Revision 2
2.1.8.1.4 Grounding
A #10-32 stud provides a common chassis ground connection among equipment.
2.1.8.2
•
•
External Reference Connectors
(1X) Type BNC female ‘J2A| REF IN’ connector, used to supply a 5 MHz
(10 MHz optional) @ +3 dBm master reference input to the entire
chassis.
OPTIONAL (1X) Type BNC female ‘J2B| REF OUT’ connector, used to
supply a 5 or 10 MHz @ +3 dBm reference output for customer use.
2.1.8.3
Ethernet Connector
(1X) 100BaseTX RJ-45 female ‘Ethernet’ Management Utility Port for operation
of the Ethernet remote control interfaces (SNMP, Telnet, HTTP).
2.1.8.4
•
•
Serial Connectors
Summary Alarm: (1X) DB-9F (D-Subminiature) ‘P1 | Relay’ Utility
Connector to access the Form C Alarms (relay closures).
Serial Remote Control Interface: (1X) DB-9F (D-Subminiature) ‘J1 |
COM1’ EIA-232/EIA-485 (2-Wire/4-Wire) connector.
2.1.8.5
Removable “Personality” Modules
Contact Comtech EF Data Product Support for information about using
the available “personality” modules.
2.1.8.5.1 IOM (Input/Output Module) Assemblies
CEFD P/N
AS/0101-1
AS/0101-2
AS/0101-9
AS/0101-15
AS/0101-19
Impedance
(Ohms)
75
75
50
50
75
Comments
DT-4503, UT-4505 I/O, Type ‘SMA’
DT-4503, DT-4572, UT-4505, UT-4579 Non-switching, Type ‘N’
DT-4503, DT-4572, UT-4505, UT-4579 Non-switching, Type ‘N’
DT-4503 I/O, UT-4505 Type ‘SMA’
UT-4518 w/Isolator, Type ‘SMA’
2–4
DT-4500 Series C- and Ku-Band Down Converters
Specifications
CEFD P/N
AS/0101-21
AS/0101-23
AS/0101-29
AS/0101-39
AS/0101-40
Impedance
(Ohms)
50
75
50
50
75
MN/DT4500.IOM
Revision 2
Comments
UT-4518 w/Isolator, Type ‘SMA’
UT-4514/F w/Isolator, Type ‘SMA’
UT-4514/F w/Isolator, Type ‘SMA’
DT-451X w/Isolator, Type ‘SMA’
DT-451X w/Isolator, Type ‘SMA’
2.1.8.5.2 PSM (Polarity Switch Module) Assemblies
CEFD P/N
AS/0101-10
AS/0101-11
AS/0101-24
AS/0101-30
AS/0101-35
AS/0101-36
Impedance
(Ohms)
75
75
50
50
50
75
Comments
DT-4503, DT-4572, UT-4579 Switching, Type ‘N’
DT-4503 Switching, Type ‘SMA’
DT-4572, UT-4579 RF Switching, Type ‘N’
Type ‘SMA’
DT-451X w/Isolator, Type ‘SMA’
DT-451X w/Isolator, Type ‘SMA’
2.1.8.5.3 TSM (Transmit Switch Module) Assemblies
CEFD P/N
AS/0101-3
AS/0101-5
AS/0101-8
AS/0101-17
AS/0101-18
AS/0101-22
AS/0101-27
AS/0101-28
AS/0101-42
AS/0101-43
Impedance
(Ohms)
75
75
50
50
75
75
50
50
75
50
Comments
DT-4503, UT-4505 Switching, Up, Type ‘SMA’
DT-4503, DT-4572, UT-4505, UT-4579 Switching, Up, Type ‘N’
DT-4503, DT-4572, UT-4505, UT-4579 Switching, Up, Type ‘N’
DT-4503, UT-4505 Switching, IF & RF, Type ‘SMA’
UT-4518 Switching IF & RF w/Isolator, Type ‘SMA’
UT-4514/F w/Isolator, Type ‘SMA’
UT-4514/F w/Isolator, Type ‘SMA’
UT-4518 w/Isolator, Type ‘SMA’
DT-451X w/Isolator, Type ‘SMA’
DT-451X, UT-4514/F w/Isolator
2.1.8.5.4 EQM (Equalizer Module) Assemblies
CEFD P/N
Impedance
(Ohms)
AS/0101-13
75
AS/0101-25
50
Comments
DT-4503, DT-451X, DT-4572, UT-4505, UT-4579 EQM for 1:1,
Type ‘SMA’
DT-4503, DT-451X, DT-4572, UT-4505, UT-4579 1:N IF & RF
Switch, Type ‘SMA’
2–5
DT-4500 Series C- and Ku-Band Down Converters
Specifications
CEFD P/N
AS/0101-31
AS/0101-32
AS/0101-33
AS/0101-34
AS/0101-41
Impedance
(Ohms)
75
50
75
50
50
MN/DT4500.IOM
Revision 2
Comments
DT-4513, UT-4514/F w/Isolator, Type ‘SMA’
DT-4513, UT-4514/F w/Isolator, Type ‘SMA
DT-4513, UT-4518/F w/Isolator, Type ‘SMA’
DT-4513, UT-4518/F w/Isolator, Typr ‘SMA’
DT-4513 1:1 Switching
2.1.8.5.5 RSM (Receive Switch Module) Assemblies
CEFD P/N
AS/0101-4
AS/0101-6
AS/0101-7
AS/0101-16
AS/0101-20
AS/0101-26
AS/0101-37
AS/0101-38
Impedance
(Ohms)
75
75
50
50
75
50
50
75
Comments
DT-4503 Switching, Down, Type ‘SMA’
DT-4503, DT-4572, UT-4579 Switching, Type ‘N’
DT-4503, DT-4572, UT-4579 Switching, Type ‘N’
DT-4503 I/O, Type ‘SMA’
Receive Switch, RSM2
RSM2, Type ‘N’
DT-451X w/Isolator, Type ‘SMA’
DT-451X w/Isolator, Type ‘SMA’
2.2 Operational Specifications
2.2.1
Available Models / Operating Frequency Ranges
Contact Comtech EF Data Product Support for your specific requirements.
2.2.1.1
•
•
•
•
DT-4503: 3625 to 4200 MHz
DT-4503/C: 3400 to 4200 MHz
DT-4503/D: 3400 to 3700 MHz
DT-4503/E: 4500 to 4800 MHz
2.2.1.2
•
C-Band Units
Ku-Band Units
DT-4510: 10.95 to 11.70 GHz
2–6
DT-4500 Series C- and Ku-Band Down Converters
Specifications
•
•
•
•
•
•
DT-4510/D: 10.70 to 11.70 GHz
DT-4511: 11.70 to 12.20 GHz
DT-4512: 12.20 to 12.75 GHz
DT-4512/E: 12.50 to 12.80 GHz
DT-4513: 10.95 to 12.75 GHz
DT-4513/E: 10.70 to 12.75 GHz
2.2.2
Conversion
Dual, no inversion.
2.2.3
•
•
Frequency Selection Step Size
STANDARD:
OPTIONAL:
2.2.4
125 kHz steps
1 kHz steps
Preset Channels
32 frequencies and gains
2.2.5
Stability Over Time
± 1 x 10-9/day
2.2.6
Stability Over Temperature
± 1 x 10-8 32° to 122°F (0° to 50°C)
2.2.7
RF Input
2.2.7.1
Input Level
-45 dBm typical
2–7
MN/DT4500.IOM
Revision 2
DT-4500 Series C- and Ku-Band Down Converters
Specifications
2.2.7.2
MN/DT4500.IOM
Revision 2
Return Loss
20 dB minimum with I/O Module
2.2.7.3
Impedance
50Ω
2.2.7.4
Noise Figure
11 dB Maximum @ 0 dB Attenuation
2.2.8
IF Output
2.2.8.1
Level
+20 dBm @ 1 dB Compression
2.2.8.2
Range
Contact Comtech EF Data Product Support for your specific requirements.
•
•
STANDARD:
OPTIONAL:
2.2.8.3
50 to 88 MHz or 104 to 176 MHz
50 to 80 MHz or 100 to 180 MHz
Non-carrier Spurious
-80 dBm
2.2.8.4
Carrier Spurious
-65 dBc @ 0 dBm output
2–8
DT-4500 Series C- and Ku-Band Down Converters
Specifications
2.2.8.5
MN/DT4500.IOM
Revision 2
Intermodulation
-60 dBc @ 0 dBm Output SCL
2.2.8.6
Impedance
50Ω or 75Ω
2.2.8.7
Return Loss
23 dB minimum with RF/IF Connector or Switch Module
2.2.9
Transfer
2.2.9.1
Gain
45 dB ±2 dB
2.2.9.2
•
•
Attenuation Adjustment
STANDARD:
OPTIONAL:
2.2.9.3
0 to 20 dB in 0.25 dB Steps
0 to 20 dB in 0.1 dB Steps
Gain Stability
± 0.25 dB/day
2.2.9.4
Ripple
Contact Comtech EF Data Product Support for your specific requirements.
•
•
±0.25 dB (±18 MHz) – OPTIONAL ±20 MHz
0.75 dB (±36 MHz) – OPTIONAL ±40 MHz
2–9
DT-4500 Series C- and Ku-Band Down Converters
Specifications
2.2.9.5
MN/DT4500.IOM
Revision 2
Slope
0.05 dB/MHz
2.2.9.6
Image Rejection
-80 dB Inband
2.2.9.7
AM to PM
0.1°/ dB for Output up to -5 dBm
2.2.9.8
IF Bandwidth
Contact Comtech EF Data Product Support for your specific requirements.
•
•
STANDARD:
OPTIONAL:
36 or 72 MHz
40 or 80 MHz
2.2.10 Group Delay
2.2.10.1 Linear
0.03ns/MHz
2.2.10.2 Parabolic
0.01ns/MHz2
2.2.10.3 Ripple
1.0ns Peak-to-Peak
2–10
DT-4500 Series C- and Ku-Band Down Converters
Specifications
MN/DT4500.IOM
Revision 2
2.2.11 Phase Noise
2.2.11.1 DT-4503, DT-4503/C, DT-4503/D
Parameter
100 Hz
1 KHz
10 KHz
100 KHz
1 MHz
Limit (dBc/Hz)
-80
-89
-95
-105
-120
Typical (dBc/Hz)
-83
-92
-97
-109
-124
2.2.11.2 DT-4510, DT-4510/D, DT-4511, DT-4512, DT-4512/E
Parameter
100 Hz
1 KHz
10 KHz
100 KHz
1 MHz
Limit (dBc/Hz)
-72
-79
-89
-98
-110
Typical (dBc/Hz)
-79
-82
-97
-109
-124
Limit (dBc/Hz)
-66
-76
-86
-96
-106
Typical (dBc/Hz)
-69
-79
-89
-99
-109
Limit (dBc/Hz)
-69
-79
-89
-100
-110
Typical (dBc/Hz)
-79
-82
-92
-102
-112
2.2.11.3 DT-4513, DT-4513/E
Parameter
100 Hz
1 KHz
10 KHz
100 KHz
1 MHz
2.2.11.4 DT-4503/E
Parameter
100 Hz
1 KHz
10 KHz
100 KHz
1 MHz
2–11
DT-4500 Series C- and Ku-Band Down Converters
Specifications
Notes:
2–12
MN/DT4500.IOM
Revision 2
Chapter 3. INSTALLATION
AND STARTUP
3.1 Unpack and Inspect the Shipment
Figure 3-1. Unpack and Inspect the Shipment
The DT-4500 Series C- or Ku-Band Down Converter, its optional Installation and
Operation Manual (available online at http://www.comtechefdata.com), its
3–1
DT-4500 Series C- and Ku-Band Down Converters
Installation and Startup
MN/DT4500.IOM
Revision 2
bearingless rack slide set, and its power cord were packaged and shipped in a
reusable cardboard carton containing protective foam spacing (Figure 3-1).
CAUTION
THIS EQUIPMENT CONTAINS PARTS AND ASSEMBLIES SENSITIVE TO
DAMAGE BY ELECTROSTATIC DISCHARGE (ESD). USE ESD
PRECAUTIONARY PROCEDURES WHEN HANDLING THE EQUIPMENT.
Inspect the shipment. Do these steps:
1. Keep all shipping materials.
2. Check the packing list to make sure the shipment is complete.
3. Inspect the equipment for damage. If damage exists,
immediately contact the carrier and Comtech EF Data to submit
a damage report.
4. Read the manual.
3–2
DT-4500 Series C- and Ku-Band Down Converters
Installation and Startup
MN/DT4500.IOM
Revision 2
3.2 Install the Unit into a Rack Enclosure
Install the unit in its assigned position in a rack enclosure (Figure 3-2). You must install
the rack in a location with a controlled environment. Failure to obey this
requirement can cause damage to the equipment, and denial of subsequent
warranty claims. You may use:
•
•
•
•
•
A standard rack-mounted shelf;
User-supplied screws to secure the front panel to the rack enclosure threaded
front mounting rails;
Comtech EF Data’s optional KT/6228-2 (4”) or KT/6228-3 (10”) Rear Support
Brackets Kit (Figure 3-3).
Comtech EF Data’s provided Bearingless Rack Slide Set (Figure 3-4).
For information about custom rack enclosures, contact Comtech EF Data
Product Support.
CAUTION
CORRECT GROUNDING PROTECTION IS REQUIRED – Connect the ground
stud, located on the rear panel of the unit, to a power system that has
separate ground, line and neutral conductors. Do not operate the unit
without a direct connection to ground.
The rack must be connected to a suitable earthing connection at all
times. You must connect the rack ground bar to a suitable earthing
demarcation point.
CORRECT AIR VENTILATION IS REQUIRED – Air flow must not be
impeded. Make sure there is proper air ventilation. Do not block the top
of the rack or the presence of a rack blower. The air temperature inside
the rack must never exceed 50°C (122°F).
If there is any doubt, contact Comtech EF Data Product Support during
normal business hours.
3–3
DT-4500 Series C- and Ku-Band Down Converters
Installation and Startup
Feature
1
2
3
4
5
6
Description
Custom Rack Enclosure
DT-45XX chassis
Standard Rack Shelving
Rack Enclosure Threaded Front Rail (typical)
Unit Front Panel
User-supplied Screws
Figure 3-2. Install the Unit into a Rack Enclosure
3–4
MN/DT4500.IOM
Revision 2
DT-4500 Series C- and Ku-Band Down Converters
Installation and Startup
MN/DT4500.IOM
Revision 2
3.2.1 Install the Optional Rear Support Brackets Kit
Feature
1
2
Item
1
2
3
4
5
Description
Back of unit
Rack Enclosure Threaded Rear Mounting Rail (typical)
Kit / Quantity
KT/6228-2 KT/6228-3
2
2
4
4
2
2
2
2
CEFD P/N
Description
HW/10-32SHLDR
HW/10-32FLT
HW/10-32SPLIT
HW/10-32HEXNUT
Shoulder Screw, #10
Flat Washer, #10
Lock Washer, #10
Hex Nut, #10
Bolt, #10, Rear Support
Bracket
Bracket, Rear Support
(4”)
Bracket, Rear Support
(10”)
4
4
HW/10-32x1/2RK
2
–
FP/6138-2
–
2
FP/6138-3
6
Figure 3-3. Install the Optional Rear-Mounting Support Brackets Kit
3–5
DT-4500 Series C- and Ku-Band Down Converters
Installation and Startup
MN/DT4500.IOM
Revision 2
Tools needed to install the optional KT/6228-2 (4”) or KT/6228-3 (10”)
Brackets Kit:
• A medium Phillips screwdriver
• A 5/32-inch SAE Allen Wrench
• An adjustable Crescent wrench.
Do these steps to install the brackets kit (Figure 3-3):
1. Use the #10 flat washers, #10 split washers, and #10 hex nut to secure the
#10 shoulder screws to the unit chassis through the rear right and left side
mounting slots as shown.
2. Mount the Rear Support Brackets to the rack enclosure threaded rear
mounting rails using the #10 Rear Support Bracket Bolts.
3. Slide the unit into the front of the rack enclosure. Make sure that the #10
Shoulder Screws properly engage into the slots of the Rear Support Brackets.
3–6
DT-4500 Series C- and Ku-Band Down Converters
Installation and Startup
MN/DT4500.IOM
Revision 2
3.2.2 Install the Optional Rack Slide Set
If the converter is to be mounted on slides, install the provided bearingless rack
slide set into the rack cabinet, and onto the sides of the DT-45XX. Use the
hardware provided with the slide set that is determined to be appropriate for
installation.
CEFD Part Number
FP/SL0006
Description
Bearingless Rack Slide Set – 26”
FP/SL0008
Bearingless Rack Slide Set – 24”
Figure 3-4. Install the Optional Rack Slide Set
Do these steps to install the slide set (Figure 3-4):
1. Use the provided hardware to install one slide onto each side of the unit
chassis.
2. Use the provided hardware to install the slide rail components into each
interior side of the equipment rack cabinet.
3. Install the unit into the front of the equipment rack. Ensure that the slides
properly engage the cabinet-mounted slide rails.
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4. Continue to slide the unit into the equipment rack to its final operating
position. Then, use four user-provided screws to secure the unit to the
equipment rack’s right and left threaded front rails (through the front panel
slots).
3.3 Connect Prime Power Connection
An IEC-60320 Type C13 (female) three-prong plug power cord for 90 to 125VAC
or 205 to 240VAC power sources is provided with the converter. This detachable
power cord mates with the AC Prime power receptacle on the rear of the
converter chassis.
3.4 Connect External Cables
Proceed to connect all external cables to the connectors outlined in the next
chapter (Chapter 4. FRONT AND REAR PANEL CONNECTIONS). Should difficulties
occur, call Comtech EF Data Product Support for assistance.
3–8
Chapter 4. FRONT AND REAR
PANEL CONNECTORS
4.1 Overview – Cabling Connection Types
Comtech EF Data’s DT-4500 Series C- and Ku-Band Down Converters use a
number of different cables. Each cable type is typically dedicated to a specific
mode of operation.
1) Not all of these operational interface types may be available.
2) The European EMC Directive (EN55022, EN50082-1) requires using
properly shielded cables for DATA I/O. These cables must be
double-shielded from end-to-end, ensuring a continuous ground
shield.
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Revision 2
Coaxial Cable Connections
(TOP) Bayonet Coupling Plug and Jack (Type ‘BNC’ Shown)
(BOTTOM) Threaded Coupling Plug and Jack (Type ‘N’ Shown)
Figure 4-1. Coaxial Connector Examples
The types of coaxial cables used by Comtech EF Data are ‘BNC’, ‘TNC’, ‘N’, ‘F’,
and ‘SMA’. Coaxial cables (plugs) and their mating connectors (jacks/sockets) are
available in two coupling styles – Bayonet or Threaded:
Bayonet Coupling Style – The jack has a pair of guideposts that accommodate
the plug’s lockdown slots. This lockdown design provides secure assembly
without over-tightening the connection.
Threaded Coupling Style – The jack features external threads. The plug shell
features internal threads, and has either a knurled outer surface to permit handtightening of the connection, or hex flats to accommodate torqued installation.
Connection Instructions
Bayonet Coupling Connections – Use the plug slots to guide, and then slide the
plug onto the jack posts. Then, turn the plug clockwise until the jack posts are
fully seated within the plug slot.
Threaded Coupling Connections – Engage the plug onto the jack threads, and
then turn the plug clockwise until it is fully threaded onto the jack. Do not overtighten the connection.
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Type ‘BNC’
BNC plugs and jacks feature a Bayonet
Coupling design.
4.1.1.2
Type ‘TNC’
TNC plugs and jacks feature a Threaded
Coupling design similar to Type ‘N’, Type
‘F,’ and Type ‘SMA’ connectors.
4.1.1.3
Type ‘N’
Type ‘N’ connectors feature a Threaded
Coupling design similar to Type ‘TNC’,
Type ‘F’, and Type ‘SMA’ connectors.
4.1.1.4
Type ‘F’
Type ‘F’ connectors feature a Threaded
Coupling design similar to Type ‘TNC’,
Type ‘N’, and Type ‘SMA’ connectors.
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Type ‘SMA’
Type ‘SMA’ connectors feature a
Threaded Coupling design similar to
Type ‘TNC’, Type ‘N’, and Type ‘F’
connectors.
4.1.2
D-Subminiature Cable Connections
Type ‘D’ Cable with Jack Screws
(Female Shown)
Type ‘D’ Chassis Receptacles with Jack Nuts:
(TOP) Female
(BOTTOM) Male
Figure 4-2. D-Subminiature Connector Examples
D-Subminiature connectors are also called Type ‘D’ or ‘D-Sub’ connectors. The
cable plug and chassis receptacle each feature a D-shaped profile that interlock
to ensure proper pin orientation and connector seating. The connector pair
features multiple rows of pins (male side) coupled to mating sockets (female
side).
Whether the gender is male or female, the cable plug features two jack screws
for secure connection to the jack nuts provided on the mating chassis receptacle.
Connection Instructions
Orient the plug to the receptacle in the proper position. Press firmly into place.
Hand tighten, or use a standard flat-blade screwdriver, to secure the plug jack
screws to the receptacle jack nuts. Do not over-tighten.
About connector pinout tables: Figure 4-2 identifies the Pin 1 location for either
gender connector.
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RJ-45, RJ-48 Cable Connections
Figure 4-3. RJ-45/RJ-48 Connector Example
The plug for an RJ-45 or RJ-48 cable features a flexible tab. The RJ-45 or RJ-48
receptacle features a mating slot. This design configuration ensures a secure
installation.
Connection Instructions
As shown in Figure 4-3 – Press down the tab on the cable plug and then insert
the plug into the receptacle. The connection is complete when the tab ‘clicks’
into position inside the receptacle.
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USB Cable Connections
(TOP) Type ‘A’ USB Plug and Receptacle
(BOTTOM) Type ‘B’ USB Plug and Receptacle
Figure 4-4. USB Connector Examples
Universal Serial Bus connectors are also called USB connectors. A USB
connection is used as a bus-type communications or power interface between
peripheral devices. The connector pair (Figure 4-4) features a plug (male side)
coupled to its mating receptacle (female side).
Connection Instructions
Type ‘A’ Connections – Slide the plug firmly into the chassis receptacle.
Type ‘B’ Connections – Orient the plug to the receptacle and push in firmly. The
Type ‘B’ cable plug and chassis receptacle each feature a D-shaped profile that
interlock to ensure proper orientation and connector seating. By design, it is
impossible to incorrectly insert the plug into the receptacle.
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4.2 Unit Connectors
External cables are attached to connectors provided on the rear and front panels
of the unit (Figure 4-5).
The DT-4500 chassis, as initially released (Figure 4-6), does not provide
an ‘Ethernet’ RJ-45 port. Ethernet interface operation is not available on
these legacy products.
(TOP) Rear Panel with Optional -48VDC Unit Power Interface
(CENTER) Rear Panel with Standard AC Unit (with IOM)
(BOTTOM) Front Panel
Figure 4-5. DT-4500 Series Rear and Front Panels (DT-4503 Current
Production Chassis shown)
Figure 4-6. DT-4500 Series Rear Panel – Initially Released Chassis
(OBSOLETE) (with RSM)
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DT-4500 Series C- and Ku-Band Down Converters
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4.2.1
Power Connections
4.2.1.1
Power Interface Module – Standard AC Unit
MN/DT4500.IOM
Revision 2
Figure 4-7. Standard AC Power Module
As shown in Figure 4-5 and Figure 4-7, the AC power interface module consists
of the following components:
Item 1 – AC Power Connector
This connector is an IEC-60320 Type C14 (male) three-prong connector, for
connection with an IEC-60320 Type C13 (female) three-prong plug power cord.
Note the following:
• Input power – 75W maximum, less than 65W typical.
• Input voltage – 90-250VAC.
Item 2 – Press-fit Fuse Holder
Install two T2.0A 20mm Slo-Blo type fuses into this fuse holder, one each for line
and neutral fusing.
Item 3 – Power Switch
Use this switch to apply power to the unit.
4.2.1.1.1
AC Operation – Replace the Fuses
Figure 4-8. Replace the AC Fuses
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DT-4500 Series C- and Ku-Band Down Converters
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As shown in Figure 4-7 and Figure 4-8: The unit rear panel features a fuse holder
that is press-fit into the body of the IEC power module.
WARNING!
DISCONNECT THE POWER SUPPLY BEFORE PROCEEDING!
CAUTION
FOR CONTINUED OPERATOR SAFETY, ALWAYS REPLACE THE FUSES
WITH THE CORRECT TYPE AND RATING.
Do these steps to replace the AC fuses (Figure 4-8):
1. Unseat the fuse holder from the IEC power module.
a. Use the slot to pry the fuse holder outward from the IEC power
supply module.
b. Pull the holder straight out, and then swing the holder away from the
module.
2. Remove and replace the fuses as needed.
• Use T2.00A 20mm fuses for AC operation.
3. Re-seat the fuse holder in the IEC power module.
4.2.1.1.2
AC Operation – Apply AC Power
Figure 4-9. Apply AC Power to the Unit
Do these steps to apply AC power to the unit (Figure 4-9):
1. Plug the provided AC power cord female end into the unit.
2. Plug the AC power cord male end into the user-supplied power source.
3. Switch the unit ON.
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Power Interface Module – Optional -48VDC Unit
Figure 4-10. Optional DC Power Module
As shown in Figure 4-5 and Figure 4-10, the DC power interface module consists
of the following components:
Item 1 – Power Connection
This is a standard 2-circuit terminal block. Note the following:
• Input power – 75W maximum, less than 65W typical.
• Input voltage – 36-72VDC.
Item 2 – Press-fit Fuse Holder
Install two 3.15A 20mm Slo-Blo type fuses into this fuse holder, one each for line
and neutral fusing.
Item 3 – Power Switch
Use this switch to apply power to the unit.
4.2.1.2.1
DC Operation – Replace the Fuses
WARNING!
DISCONNECT THE POWER SUPPLY BEFORE PROCEEDING!
CAUTION
FOR CONTINUED OPERATOR SAFETY, ALWAYS REPLACE THE FUSES
WITH THE CORRECT TYPE AND RATING.
Do these steps to replace the DC fuses:
1. Disconnect the power supply leads.
2. Pry the fuse holder outward from the DC power supply module.
3. Remove and replace the 3.15A 20 mm Slo-Blo fuses as needed.
4. Press fit the fuse holder back into its receptacle.
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DC Operation – Apply Power
Figure 4-11. Apply DC Power to the Unit
Do these steps to apply DC power to the unit (Figure 4-11):
1. Connect the user-supplied ‘-48’ (+) and ‘GND’ (–) DC power leads to their
respective terminals.
Number 18 AWG minimum wires are recommended.
2. Connect the user-supplied DC power leads to the user power source.
3. Energize the power source.
4. Switch the unit ON.
4.2.2
Unit Ground Connection
Figure 4-12. Unit Ground Connection
CAUTION
PROPER GROUNDING PROTECTION IS REQUIRED. You must connect the
equipment to the protective earth connection at all times. Use this
ground stud during installation, configuration, and operation.
The AC power interface provides the safety ground.
As shown in Figure 4-5 and Figure 4-12 (Item 10): Use this #10-32 stud, located
at the right side of the rear panel, for connecting a common chassis ground
among equipment.
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Operational Connections
See Sect. 4.1 Overview – Cabling Connections Types for information
about each connector type and its connection instructions.
Figure 4-13. Rear Panel Operational Connections (with IOM)
As shown in Figure 4-5 and Figure 4-13 (Items 4 through 9):
Item 4 – ‘J2A | REF IN’ Utility Connector
Use this female BNC connector to supply a master reference to the entire
chassis. The user-supplied input signal is used for phase-locking the internal
10MHz reference oscillator to a user-provided 5 or 10 MHz station clock. The
impedance is matched for 50Ω or 75Ω and requires an input level of 0 ±5 dBm.
Item 5 – ‘J2B | REF OUT’ Utility Connector (OPTIONAL)
Use this optional female BNC connector to provide a 10 MHz reference for
customer use. The impedance is matched for 50Ω or 75Ω and provides an
output level of 5 ±3 dBm.
Item 6 – ‘Ethernet’ Ethernet Management Utility Port
The DT-4500 Series Down Converter, as initially released, does not
feature a rear panel ‘Ethernet’ port. Only current production units offer
Ethernet Interface operation.
Use this 100 Base-TX Ethernet RJ-45 port for operation of the Ethernet remote
control interfaces. It is also used for updating DT-4500 firmware. This receptacle
uses a CAT5 Ethernet cable for connection to an Ethernet hub, router, switch,
PC, etc. See Table 4-1 for the connector pinouts.
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Table 4-1. ‘Ethernet’ M&C Interface Connector Pinout
Pin #
1
2
3
4
5
6
Description
Tx+
TxRx+
N/A
N/A
Rx-
Direction
Out
Out
In
--In
Item 7 – ‘J1 | COM1’ Serial Management Utility Connector
Use this D-Sub 9-pin female (DB-9F) EIA-232/EIA-485 connector for Serial
Interface operation. The mating connector is a DB-9M connector. See Table 4-2
for the EIA-485 2-Wire pinout specification; see Table 4-3 for the EIA-485 4-Wire
pinout; and Table 4-4 for the EIA-232C pinout.
Table 4-2. ‘J1 | COM1’ 2-Wire
EIA-485 Pinout
Pin #
1
2
3
4
5
6
7
8
9
Table 4-3. ‘J1 | COM1’ 4-Wire
EIA-485 Pinout
Description
GND; Ground
Pin #
1
2
3
4
5
6
7
8
9
+Rx/Tx; Signal
-Rx/Tx; Signal Complement
+Rx/Tx; Signal
-Rx/Tx; Signal Complement
Description
GND; Ground
+Tx; Signal
-Tx; Signal Complement
+Rx; Signal
-Rx; Signal Complement
Table 4-4. ‘J1 | COM1’ EIA-232C Pinout
Pin #
1
2
3
4
5
6
7
8
9
Description
TD; Transmit Data
RD; Receive Data
GND; Ground
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Item 8 – ‘P1 | RELAY’ Utility Connector
Use this D-Sub 9-pin female (DB-9F) connector to access the Form C Alarms
(relay closures). The mating connector is a DB-9M connector.
Table 4-5. ‘P1 | RELAY’ Pinout
Pin #
1
2
3
4
5
6
7
8
9
Description
Summary Fault NC
Summary Fault NO
Notes
1) Pin 1 to Pin 6: FAULT
2) Pin 2 to Pin 6 OK (NO FAULT)
3) Pin 7 to Pin 5: Forced Faults (typically used
with external group delay equalizers)
Ground
Summary Fault COM
EXT_FLT_IN#
Item 9 – Removable Module
See Sect.4.2.4 for information about these removable “personality”
modules.
Item 11 – Front Panel RF Sample Test Point Connector
Figure 4-14. Front Panel Sample Test Point Connections
As shown in Figure 4-5 and Figure 4-14 (Item 11): This female Type ‘SMA’
connector (-20 dBc nominal) provides the user RF test point interface.
An optional RF LO monitor (0 dBm nominal) is available in replace of
the ‘RF’ Sample Test Point.
Item 12 – Front Panel ‘IF’ Sample Test Point Connector
As shown in Figure 4-5 and Figure 4-14 (Item 12): This female BNC connector
(-20 dBc nominal) provides the user IF test point interface.
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DT-4500 Series Cable Connections
Figure 4-15. DT-4500 Series Cabling Example (with RSM)
Figure 4-15 provides a cabling connection example for the DT-4500 Series Down
Converters. This example depicts use of a Receive Switch Module (RSM) in a
standalone configuration – the module cabling requirements will vary. All other
cabling to the available rear chassis connectors is identical across all applications.
Contact Comtech EF Data Product Support for cabling instructions
specific to your converter application.
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Revision 2
Removable “Personality” Modules
Contact Comtech EF Data Product Support for complete details and
specifications for the module(s) specific to your system.
See Chapter 2. SPECIFICATIONS for the listings of available modules for
use with the DT-4500 Series Down Converters and UT-4500 Series Up
Converters.
(TOP) Input/Output Switch Module (IOM)
(CENTER) Receive Switch Module (RSM)
(BOTTOM) Transmit Switch Module (TSM)
Figure 4-16. “Personality” Module Examples
Depending on the application, the converter chassis rear panel module slot
accepts an Input/Output Module (IOM), Polarity Switch Module (PSM), Transmit
Switch Module (TSM), Equalizer Module (EQM), or Receive Switch Module (RSM).
The converter RF, IF, and High-Speed Bus (HSB) connectors are integral to the
installed module.
Removable modules are available for both non-redundant (also referred to as
single thread or standalone) and redundant applications.
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Removable Module Connectors
The module connector types vary depending on the operating band and
impedance of the purchased unit:
• The IF Input/Output and LP (Loop) In/Out connectors are typically female
BNC connectors.
• The RF Input/Output and LP (Loop) In/Out connectors may be female
Type ‘N’ or female Type ‘SMA’ connectors, depending on the application.
• All switch modules feature a ‘J3 | HSB’ (High Speed Bus) connector.
Table 4-6 provides the pinout specifications for this D-Sub 25-pin female
(DB-25F) connector. The mating connector is a DB-25M connector.
Table 4-6. ‘J3 | HSB’ Data Interface Pinout
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Description
Cntl_12
Cntl_10
Cntl_8
Cntl_6
Cntl_4
Cntl_2
Cntl_In
+14V Out
+14V In
Aux_3
Aux_1
-Rx/Tx
GND
Cntl_11
Cntl_9
Cntl_7
Cntl_5
Cntl_3
Cntl_1
+14V Out
+14V In
GND
Aux_2
GND
+Rx/Tx
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The ‘J3 | HSB’ connector does not employ a “straight-through” cable
assembly. Contact Comtech EF Data Product Support for detailed
cabling instructions when cabling between converters in redundant
applications.
4.2.4.2
Removable Module Operation in Non-Redundant
(Standalone) Applications
A converter may use a Transmit Switch Module (TSM) or a Receive Switch
Module (RSM) in standalone configurations if an IOM (Figure 4-17) is
unavailable.
Note that the High Speed Bus ‘J3 | HSB’ connector is not used in standalone
configurations. If a module other than an IOM is used, only the ‘J4 | IF’ and ‘J5 |
RF' connectors are used to connect directly to the user input/output signal
sources (Figure 4-18).
Figure 4-17. DT-4500 Standalone Cabling Example to IOM
Figure 4-18. DT-4500 Standalone Cabling Example to RSM
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Removable Module Operation in Redundant Applications
See Appendix A. REDUNDANT SYSTEM OPERATION for descriptions of
the specific use of these various switch modules in redundant
applications.
In subsystems where a redundant converter configuration is used, the backup
converter (BU) has an Input/Output Module (IOM), while the online converters
have Receive Switch Modules (RSMs). When a fault occurs in an online
converter, the system commands the RSM in the faulted converter to switch to
the BU (Figure 4-19).
Figure 4-19. RSM Switching Schematic
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Notes:
4–20
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Revision 2
Chapter 5. FIRMWARE
UPDATE
5.1 Firmware Overview
Make sure to operate the DT-4500 with its latest available firmware.
The DT-4500 Series C- or Ku-Band Down Converter is factory-shipped with its
latest version of operating firmware. If you need to update the firmware, you can
apply the update to the DT-4500 without having to remove it from operation.
You may directly acquire the download from Comtech EF Data’s web site
(www.comtechefdata.com), or receive the archive file by e-mail from Comtech EF
Data Product Support.
5.1.1
DT-4500 Firmware Update Procedure Summary
1. Download the firmware update archive file to a user-supplied PC. The PC
must be Microsoft Windows® compatible.
2. Connect a user-supplied Ethernet cable from the User PC to the
‘Ethernet’ RJ-45 100BaseTX port.
3. Connect a user-supplied serial cable from the User PC to the ‘J1 | COM1’
DB-9F port.
4. Extract the firmware update files from the archive download file. You may
then use Comtech’s “CReflash” utility. Otherwise, you must use the
DT-4500 Management IP Address to connect the FTP client to an FTP
server, and then FTP-transfer the files from the User PC to the DT-4500.
5–1
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About Firmware Numbers, File Versions, and
Formats
The Comtech EF Data Web site catalogues its firmware update archive
files by product type (e.g., router, modem, etc.), the specific model, and
optional hardware configurations. The DT-4500 files are provided under
“Home | Support | Software Downloads | Flash & Software Update
Files | Converters | DT-4500 Series & UT-4500 Series Software
Downloads.”
The DT-4500 firmware download hyperlink for the Ethernet-ready
current production unit (i.e., Ver6x chassis) is F0000202x_V###.
The DT-4500 firmware download hyperlinks for older, non-Ethernet
units (Ver5x and earlier chassis) are as follows:
• Ver5x Units / 1 kHz Step Size: F1611-1x_v###
• Ver5x Units / 125 kHz Step Size Units: F1610-1x_v###
• Ver4x Units / 1 kHz Step Size Units: F1604-1x_v###
• Ver4x Units / 125 kHz Step Size Units: F1603-1x_v###
Note that ‘x’ is the firmware revision letter, and ‘###’ represents the
firmware version number (e.g., V123 = Version 1.2.3).
Comtech EF Data provides its archive download files in two compressed
formats – *.exe (self-extracting) and *.zip (compressed):
• The self-extracting *.exe file does not require use of a thirdparty utility program.
• Some firewalls do not allow the download of self-extracting
*.exe files. You must instead download the *.zip file, and extract
the firmware files from the download with a user-supplied
third-party file archiver and compression utility program such as
PKZIP for Windows, WinZip, ZipCentral, etc. (PKZIP for DOS is
not supported due to file naming conventions). Comtech EF
Data does not provide this utility program.
For detailed information on handling archived files, read your utility
program’s Help documentation.
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5.2 Prepare for the Firmware Download
5.2.1
Required User-supplied Items
You will need a Microsoft Windows-based PC equipped with available serial and
Ethernet ports, a compatible Web browser (e.g., Internet Explorer), and a
terminal emulator program (e.g., Tera Term or HyperTerminal).
5.2.2
Configure the Terminal Emulator Program
Read your terminal emulator program user guide or HELP feature for
operating and configuration instructions.
On the User PC – Open the terminal emulator program, and then configure the
program’s serial port communication and terminal display operation:
• Baud Rate = 38400 bps
• Data Bits = 8
• Stop bits = 1
• Parity = NO
• Local Echo = ON
• Port Flow Control = NONE
• Display New Line Rx/Tx = CR
5.2.3
Get the DT-4500 Management IP Address and
Firmware Information
1. On the DT-4500 – Apply power to the unit. Typical for either the standard
AC unit or the optional DC unit, switch the power ON.
2. Use the DT-4500 front panel to identify your default Management IP
Address. You will not be able to access the DT-4500 HTTP Interface
without this information. See Section 5.2.3.1.
3. Get the firmware information using one these methods:
• To use the DT-4500 front panel, see Section 5.2.3.1.
• To use the HTTP (Web Server) Interface, see Section 5.2.3.2.
• To use the serial remote control, see Section 5.2.3.3.
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Revision 2
Use the DT-4500 Front Panel to Get the Management IP
Address and Firmware information
Chapter 6. FRONT PANEL OPERATION
Using the unit front panel:
•
You may view find the factory-assigned Management IP Address within
the CONFIG  REMOTE ETHERNET  ADDRESS menu branch:
IP Address/Range:
XXX.XXX.XXX.XXX/YY
•
You may view the current Firmware M&C version at the top-level menu
of the front panel display (press the [CLEAR] key several times):
DT_45XX –X
SW VER X.X.X SN#########
•
You may view the detailed firmware information within the UTILITY 
FIRMWARE INFO  IMAGE#1 or IMAGE#2  BULK menu branches:
Image#X: BULK APP FPGA
Bulk#X: FW-0000202x
X.X.X. MM/DD/YY
5.2.3.2
Use the HTTP Interface to Find the Firmware Information
Chapter 7. ETHERNET INTERFACE OPERATION
Do these steps:
1. Go to either of these pages to review the firmware information:
• The ‘Firmware Information’ section of the ‘Config | Utility’ page
provides the firmware details as Boot, Bulk1, and Bulk2, as shown
in this example:
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The ‘Summary’ section of the ‘Status | Summary’ page provides
the firmware details – “FW Revision”, “Active Software Image”,
and “Next Reboot Image” – as shown in this example:
2. Write down your firmware information for further reference or to provide
to Comtech EF Data Product support.
5.2.3.3
Use the Serial Interface to Find the Firmware Information
Chapter 8. SERIAL INTERFACE OPERATION
Use your terminal emulator program to execute remote queries with the
DT-4500. Use the “FRM” remote query to find the firmware information:
• <DEV/FRM_{cr}
(returns the complete information of the firmwares running under Boot,
Bulk1, and Bulk2 in the form FW-AAAAAAA B.B.BB DD/MM/YY,
where:
o FW-AAAAAAA = the firmware part number
o B.B.BB = the firmware version number
o DD/MM/YY = the firmware release date (Day/Month/Year)
5.2.4
Make a Temporary Folder (Subdirectory) on the
User PC
The temporary folder is where you store the firmware archive download. There
are several ways you can make a temporary folder on a Windows PC:
• To use the Windows Desktop, see Section 5.2.4.1.
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To use Windows Explorer, see Section 5.2.4.2.
To use the Run and Browse windows, see Section 5.2.4.3.
To use Windows Command-line or the Command Prompt, see Section
5.2.4.4.
1) These examples specify drive letter “c:”. You can use any valid,
writable drive letter.
2) Typical for many of the tasks that follow, type the command as
instructed and then press Enter.
After you make the temporary folder, proceed to Section 5.3 to download and
extract the firmware files.
5.2.4.1
Use Windows Desktop to Make a Folder
Do these steps:
1. Right-click anywhere on the desktop to open the popup submenu.
2. Select New > Folder to make the new, temporary folder on the desktop.
3. Right-click on the new folder and then select Rename from the popup
submenu. Rename this folder to “temp” or some other convenient,
unused name.
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Use Windows Explorer to Make a Folder
Do these steps:
1. Left-double-click the Windows Explorer icon on the Windows Desktop.
2. Depending in your Windows OS version: select File > New > Folder, or
click your Folder Destination (e.g., Windows (C:) and then New Folder to
make the new, temporary folder in the active location.
3. Right-click the New Folder folder name, and then Rename this folder to
“temp” or some other convenient, unused name.
5.2.4.3
Use the Run and Browse Windows to Make a Folder
Select Start on the Windows taskbar and then do these steps:
1. Click Run… to open the Run window.
2. Click Browse… to open the Browse window.
3. Click New Folder. This can be an icon or a text label, depending on the
Windows OS version.
4. Right-click the New Folder folder name, and then Rename this folder to
“temp” or some other convenient, unused name.
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Use Windows Command-line or Command Prompt to
Make a Folder
Select Start on the Windows taskbar and then do these steps:
1. Click Run... to open the Run window (or, depending on Windows OS
version prior to Windows 95, click the MS-DOS Prompt icon from the
Main Menu).
2. Open a Command-line window:
• For Windows 95 or Windows 98 – type “command”.
• For any Windows OS versions later than Windows 98 – type “cmd” or
“command”.
• Alternately, from Start, select the All Programs > Accessories popup
submenu, and then select Command Prompt:
3. From the c:\> prompt, type either “mkdir temp” or “md temp” (both
“mkdir” and “md” mean “make directory”), and then press Enter.
There will now be a “temp” folder created and available for placement of the
firmware file download.
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5.3 Download and Extract the Firmware Update
Files
Do these steps:
1. Go online to www.comtechefdata.com.
2. On the Main page – Under Support Information or the Support tab,
select the Software Downloads hyperlink.
3. On the Software Downloads page – Click Download Flash and Software
Update Files.
4. On the Flash Updates Index page – Select the (Select a Product Line)
Converters hyperlink.
5. On the Converters product page – Select the DT-4500 product hyperlink.
6. Select the appropriate firmware archive EXE or ZIP file download
hyperlink.
7. Once you select the EXE or ZIP hyperlink, the File Download dialogue
opens on your browser and prompts an action. You may otherwise click
[Cancel] to quit the file download process. Note the following:
• For EXE files:
o Click [Run] to open the self-extractor dialogue window. Use
[Browse] to select your destination folder. Click [Unzip] to extract
the files. Your results display as per this example – click[OK] to
close. Your files are now available for transfer to the DT-4500.
o Click [Save] to download the EXE file to your Downloads
folder. Once the download is complete the dialogue prompts
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you to either [Run] the self-extracting file, or to open or view
the Windows Downloads folder for further action.
•
For ZIP files:
o Click [Open] to open the archive file. Use the WinZip features to
select the files for extraction to your destination folder.
o Click [Save] to download the ZIP file to your Windows Downloads
folder. Once the download is complete the dialogue prompts you
to either [Open] the archive file, or to open or view the Windows
Downloads folder for further action.
8. If not already done with File Download > Open, you must extract, at a
minimum, these files (filenames are subject to change):
• FW-0000202X_45xxA_#.#.#.bin – The Firmware Bulk image file
• ReleaseNotes_ 45xxA.v#.#.#.pdf – The Firmware Release Notes PDF
file
• CReflash.exe –The Firmware Update Utility program
WHERE: ‘X’ is the firmware revision letter, and ‘#._#.#’ is
the firmware version (e.g., FW Ver. 1.2.3)
9. Confirm availability of the firmware files in the temporary folder. There
are several ways you can view the contents of the temporary folder on a
Windows-based PC:
• To use the Windows Desktop, see Section 5.3.1.1.
• To use Windows Command-line or Command Prompt, see Section
5.3.1.2.
After you confirm the firmware files are in the folder, proceed to Section 5.4 to
upload the firmware update to the DT-4500.
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Use Windows Desktop to View Folder Contents
From the Windows Desktop:
1. Double-left-click the Windows Explorer icon, and then double-left-click as
needed to locate, and then open, the “temp” folder (directory) created
earlier on the Windows Desktop.
2. Use the Browse window (Start > ...Run > Browse) to locate, and then
double-click to open, the “temp” folder.
5.3.1.2
Use Windows Command-line to View Folder Contents
From Command-line or Command Prompt:
1. Type “cd c:\temp” at the Windows Command-line prompt to change to
the temporary folder (directory) created earlier using Command-line.
2. Type “dir” to list the files extracted to the temporary folder from the
downloaded archive file.
5.4 Upload the Firmware Files and Update the
DT-4500 Unit
5.4.1
Important Considerations
Before you proceed with the firmware update, make sure that:
• You connect the DT-4500 ‘Ethernet’ port to a Windows-based PC
Ethernet port with a CAT5e Ethernet cable.
• Your PC is running a terminal emulation program for operation of the
DT-4500 Telnet or serial interfaces.
• You have noted your DT-4500 Management IP Address.
• Your PC is running a compatible Web browser for operation of the
DT-4500 HTTP Interface.
• You download or otherwise have Comtech’s latest firmware files and the
“CReflash” utility available on the User PC in an accessible temporary
folder.
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Steps to “CReflash” Upload the Firmware Files
1) The “CReflash” utility is provided with the firmware download.
2) Ver5x and earlier chassis units (i.e., non-Ethernet units) must use this
procedure.
Do these steps:
1. From the temporary folder – Locate, and then double-click, the
“CReflash” filename or icon. The CReflash utility opens:
2. Enter your upload parameters information into CReflash:
a. Left-click in the “IP Address:” text box, and enter the default
Management IP Address.
b. Left-click in the “Local Filename:” text box. Then, click [Browse]
and navigate to the temporary folder created earlier. Click on the
firmware “bin” filename, and then click [Open]. The filename will
appear in the “Local Filename:” text box.
c. Make sure the drop-down list remains set to “bulk:”.
d. Click [Start] to begin the upload process. If the information was
correctly entered into CReflash, the utility displays an animated
progress bar at the bottom of the window, along with a series of
messages:
• “Opening FTP”
• “Sending data file to modem:”
• “Writing FLASH: # of #”
• “Success!”
3. When done, click [Cancel] to exit CReflash.
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Steps to FTP Upload the Firmware Files
1) Typical for all steps: “xxx.xxx.xxx.xxx” represents the assigned unit
Management IP Address.
2) Type all commands without quotes, and press Enter to execute.
1. To proceed, you should already have noted the Management IP Address for
the DT-4500 as instructed in Section 5.2.3.1.
2. Use Windows Command-line to send a ping command. To ping the unit, type
“ping xxx.xxx.xxx.xxx” at the Windows Command-line prompt. The response
should confirm whether the unit is connected and communicating correctly
with the User PC.
3. Use Windows Command-line to transfer the files from the User PC to the
DT-4500 unit via FTP:
a. Type “ftp xxx.xxx.xxx.xxx” to open the FTP session.
b. Type “bin” to set the binary transfer mode.
c. Type “prompt”.
d. Type “hash”.
e. To begin the file transfer, type “put FW-0000202X.bin bulk:”
The destination “bulk:” must be all lower-case.
Press Enter. The unit reports the update progress (e.g., first
“Programming App Flash … Please wait.” and then “Programming main
FPGA … Please wait.”)
f. Wait for the file transfer to end.
g. Type “bye” to close the FTP session.
h. Close the Windows Command-line window.
4. To verify that the PC-to-unit FTP file transfer was successful, find the current
firmware information via the front panel or the HTTP or Serial Interface (see
Sections 5.2.3.1, 5.2.3.2, or 5.2.3.3).
5.4.4
Steps to Complete the Firmware Update Procedure
•
•
Chapter 6. FRONT PANEL OPERATION
Chapter 7. ETHERNET INTERFACE OPERATION
Use the DT-4500 front panel or the HTTP Interface to select the new firmware
image. You must then reboot the unit for the update to take effect.
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Select the Boot Image
5.4.4.1.1 Use the Front Panel to Select the Boot Image
Do these steps from the DT-4500 front panel:
1. Go to the UTILITY  FIRMWARE SELECT menu branch.
Current Active Image: #2
Next Reboot Image: #1 #2
2. On the bottom line, use the ◄ ► arrow keys to change to the other
image.
You must be in LOCAL MODE to perform this task. If you are not
in Local Mode (via the CONFIG REMOTE menu branch), the
unit will prompt you to take an action before continuing:
Remote Mode: press ENTER
For local mode, or CLEAR
3. You must cycle power to hard-reboot the unit.
5.4.4.1.2 Use the HTTP Interface to Select the Boot Image
Do these steps from the HTTP Interface ‘Config | Utility’ page:
1. Use the ‘Next Reboot Image’ drop-down list to select Image 1 or 2 as the
preferred Current Active Firmware Image:
2. Click [Submit].
3. Hard-reboot or soft-reboot the unit.
5.4.4.2
Reboot the Unit
5.4.4.2.1 Hard-reboot the Unit from the Rear Panel
Typical for either the standard AC unit or the optional DC unit:
1. From the unit rear panel, switch the power OFF, and then turn the power
back ON.
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2. Verify the new firmware version has booted; for example, check the
firmware version displayed on the DT-4500 front panel:
DT_45XX –X
SW VER X.X.X SN#########
5.4.4.2.2 Soft-reboot the Unit from the HTTP Interface
Do these steps from the HTTP Interface ‘Config | Utility’ page:
1. In the ‘Perform Soft Reboot’ section, click [Reboot Now]:
2. Wait while the DT-4500 reboots with the Current Active Firmware Image.
3. To load a second image, repeat the tasks described throughout Section
5.4.4.
The DT-4500 is now operating with its latest firmware. The firmware update
process is complete.
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Chapter 6. FRONT PANEL
OPERATION
6.1 Front Panel Overview
You may fully control and monitor the DT-4500 Series C- or Ku-Band Down
Converter from the front panel (Figure 6-1).
(TOP) Initially Released Chassis
(BOTTOM) Current Production Unit
Figure 6-1. Front Panel View (DT-4503 Shown)
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Power Up the Unit
Before applying power, you should check to ensure that installation is complete.
Verify that the converter is connected to the proper prime power source, RF
Input, and IF Output.
(LEFT) Standard AC Chassis
(RIGHT) Optional -48VDC Chassis
Figure 6-2. Rear Panel – Standard and Optional Power Interfaces
Switch on the unit (Figure 6-2). Verify that the cooling fan is operational, the LED
indicators illuminate as expected, and the Vacuum Fluorescent Display is
readable.
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LED Indicators
The Light-Emitting Diode (LED) Indicators for the initially-released
chassis and the current production unit differ as follows:
(LEFT) LEDs – Initially Released Chassis
(RIGHT) LEDs – Current Production Unit
See Figure 6-1, Item 1.These six LED Indicators convey operational states as
follows:
POWER ON
Lights GREEN when prime power is applied to the unit.
RECEIVE (INITIALLY RELEASED CHASSIS)
OUTPUT ENABLE (CURRENT PRODUCTION UNIT)
Lights AMBER when the transmit function is operational.
REMOTE
Lights AMBER when the unit is in Remote Communication Mode (i.e., Serial or
Ethernet). Local monitoring is possible, but there is no local control.
Remains OFF when the unit is in Local Mode. Remote monitoring is possible, but
no there is no remote control.
ON LINE
Lights AMBER when the unit is online and carrying traffic.
FAULT
Lights RED when a fault condition exists.
STORED FAULT
Lights RED when a fault condition is logged and stored.
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Vacuum Fluorescent Display (VFD)
The displays for the initially-released chassis and the current
production unit differ as follows:
(LEFT) Liquid Crystal Display (LCD) – Initially Released Chassis
(RIGHT) Vacuum Fluorescent Display (VFD) – Current Production Unit
DT-4503C-2
SW VER 1.2.3 SN012345678
See Figure 6-1, Item 2. The VFD is an active display showing two lines of 24
characters each. It produces a blue light with adjustable brightness. On most
menu screens, you will see a flashing, solid-block cursor that blinks at a onceper-second rate. This indicates the currently selected item, digit, or field:
CONFIG
MONITOR
FAULTS
PRE-SELECTS
UTILITY
Where this solid block cursor obscures the item under edit (e.g., a numeric field),
the cursor automatically changes to an underline cursor:
IP Address/Range:
192.168.001.006/24
To prevent the display from becoming burnt by a constant image, the unit
employs a screen saver feature that activates after one hour. This message
constantly scrolls and wraps across the screen. The top line displays the AID (the
user-defined name for the unit); the bottom line displays the message “Press
any key…” as shown:
Circuit ID:---------------Press any key...
Press any key to restore the previously active screen.
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Keypad
The keypads for the initially-released chassis and the current
production unit differ as follows:
(LEFT) “Square” Button Keypad – Initially Released Chassis
(RIGHT) “Round” Button Keypad – Current Production Unit
See Figure 6-1, Item 3. The keys for the current production unit keypad have a
positive ‘click’ action that provides tactile feedback.
Enter data via the keypad. Data, prompts, and messages are displayed on the
VFD. Operation of the individual keys is as follows:
• Use the ENTER key to select a displayed function or to execute a unit
configuration change.
• Use the CLEAR key to back out of a selection or to cancel a configuration
change that has not been executed using ENTER. Pressing CLEAR
generally returns the display to the previous selection.
• Use the  (LEFT) and  (RIGHT) keys 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.
• Use the  (UP) and  (DOWN) keys to change configuration data
(numbers). You may also use these keys to move from one section to
another.
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 the IP Address assignments.
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6.2 Front Panel Operation – Menu Matrix
Chapter Sect. Menu Screen Description
6.2.1
Opening Screen
6.2.2
Select (Main) Menu
6.2.3
CONFIG (Configuration)
6.2.3.1
(CONFIG:) OUTPUT
6.2.3.2
(CONFIG:) REMOTE
6.2.3.2.1
(REMOTE:) LOCAL
6.2.3.2.2
(REMOTE:) SERIAL
6.2.3.2.3
(REMOTE:) ETHERNET
(REMOTE:) ETHERNET ¹ ADDRESS
6.2.3.2.3.1
(REMOTE:) ETHERNET ¹ GATEWAY
6.2.3.2.3.2
(REMOTE:) ETHERNET ¹ SNMP
6.2.3.2.3.3
6.2.3.3
(CONFIG:) REDUNDANCY
6.2.3.3.1
(REDUNDANCY:) MODE
6.2.3.3.2
(REDUNDANCY:) Auto/Manual
6.2.3.3.3
(REDUNDANCY:) FORCE
6.2.3.3.4
(REDUNDANCY:) HSB
6.2.3.4
(CONFIG:) FAULTRECOVERY
6.2.3.5
(CONFIG:) COLDSTART
6.2.4
MONITOR
6.2.5
FAULTS
6.2.5.1
(FAULTS:) CURRENT
6.2.5.2
(FAULTS:) STORED
(FAULTS:) STORED ¹ VIEW
6.2.5.2.1
(FAULTS:) STORED ¹ CLEAR-ALL
6.2.5.2.2
6.2.5.3
(FAULTS:) MASK
6.2.6
PRE-SELECTS
6.2.6.1
(PRE-SELECTS:) LOAD
6.2.6.2
(PRE-SELECTS:) PROGRAM
6.2.6.3
(PRE-SELECTS:) CLEAR
6.2.7
6.2.7.1
6.2.7.2
6.2.7.3
6.2.7.3.1
6.2.7.3.1.1
6.2.7.3.1.2
6.2.7.3.2
6.2.7.4
6.2.7.5
6.2.7.6
6.2.7.7
Submenu Selections
–
CONFIG; MONITOR; FAULTS; PRE-SELECTS; UTILITY
OUTPUT; REMOTE; REDUNDANCY; FAULTRECOVERY
Frq(MHz); Atten (dB); Rx
Local; Serial; Ethernet
–
Serial Mode; Address; Baudrate
ADDRESS; GATEWAY; SNMP
–
–
COMMUNITIES; TRAPS
MODE; Auto/Manual; FORCE; HSB
On/Off; BU/#01-12
Select: A/M
Offset (dB); Activate BU (Yes/No)
–
Manual/Auto
–
–
CURRENT; STORED; VIEW
–
VIEW; CLEAR-ALL
–
–
Fault/Masked
LOAD; PROGRAM; CLEAR
No/Yes
Pre-Select Slot #; Frq (MHz); Atten (dB)
No/Yes
TIME; DISP; FIRMWARE; AID; REFOSC; SLOPE; LAMPUTILITY
TEST
(UTILITY:) TIME
Time (HH:MM:SS); Date (MM/DD/YY)
(UTILITY:) DISP
25%/50%/75%/100%
(UTILITY:) FIRMWARE
INFO; SELECT
(FIRMWARE:) INFO
BOOTROM; IMAGE#1; IMAGE#2
(FIRMWARE:) INFO ¹ BOOTROM
–
(FIRMWARE:) INFO ¹ IMAGE#1/#2 BULK; APP; FPGA
(FIRMWARE:) SELECT
(IMAGE) #1/#2
(UTILITY:) AID
(Application ID Message)
(UTILITY:) REFOSC
(Reference Frequency Adjustment)
(UTILITY:) SLOPE
(Converter Slope Adjustment)
(UTILITY:) LAMP-TEST
No/Yes
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Opening Screen
DT_4503C-2
SW VER. #.#.# SN012345678
The opening screen displays once you apply power to the unit. The top line
identifies the unit model (e.g., DT-4503C-2). The bottom line displays the
running Firmware Version (this number may vary) and the unit serial number.
Press ENTER to display the Main Menu. Press CLEAR repeatedly from any nested
screen to return to this screen.
The screen shots provided throughout this chapter are applicable to
all DT-4500 Series Down Converters. Any operational restrictions are
noted.
6.2.2
Main Menu
CONFIG
MONITOR
FAULTS
PRE-SELECTS
UTILITY
Use the   keys to move the cursor to the desired choice. Press ENTER. The
function of each menu branch is as follows:
• CONFIG (Configuration) Menu Branch – These screens provide selections
for the desired output, local/remote control, redundancy, and fault
recovery operations.
• MONITOR Menu Branch – These screens provide real-time monitoring of
system voltages, unit temperature, IFLO tuning, and Synth tuning.
• FAULTS Menu Branch – The converter displays up to 100 faults, date and
time stamped and stored in memory as they occur.
• PRE-SELECTS Menu Branch – These screens provide configuration and
recall of up to 32 pre-set operating selections.
• UTILITY Menu Branch – These screens permit you to configure such
system functions as the Real-Time Clock, VFD brightness, unit ID, and
firmware loading preferences.
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(SELECT:) CONFIG (Configuration) Menu Branch
OUTPUT REMOTE REDUNDANCY
FAULTRECOVERY COLDSTART
Use the   keys to move the cursor to the desired choice. Press ENTER. The
function of each CONFIG submenu is as follows:
• OUTPUT Submenu – The selections here allow you to define output
frequency, attenuation, and set Rx operations as ON or OFF.
• REMOTE Submenu – The selections here allow you to select whether you
control the unit locally or remotely, set the unit address, the interface
type, and the operating parameters for that interface.
• REDUNDANCY Submenu – The selections here allow you to identify the
redundancy state and mode (see Appendix A. REDUNDANT SYSTEM
OPERATION for detailed information about redundancy operations).
• FAULTRECOVERY Submenu – The selections here allow you to set the
Fault Recovery operation as AUTO or MANUAL.
• COLDSTART Submenu – The selections here allow you to mute the
converter output signal for a pre-determined time after power is applied
to the converter to ensure that the reference oscillator is stable. (This
submenu is non-operational in redundancy systems.)
6.2.3.1
(CONFIG:) OUTPUT Submenu
Frq=03627.125 MHz
Atten=19.75 dB Rx = Off
On the top line, set the converter Freq (Frequency). You may edit the current
frequency channel from RFLow to RFHigh MHz (e.g.; 10950.000 to 12750.000 MHz
for Model DT-4513) in 125 kHz steps (1 kHz steps optional). Use the   keys to
select a digit, and then use the  keys to change that digit.
On the bottom line, set the converter Atten (Attenuation). You may select an
attenuation setting from 0.00 to 25.00 dB in 0.25 dB steps (0.1 dB steps
optional). The default setting is 10.00 dB. Use the   keys to select a digit, and
then use the  keys to change that digit.
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Next, use the  keys to set Rx (down converter operation) as On or Off. The
default mode is Off. Press ENTER.
6.2.3.1.1 (CONFIG:) OUTPUT Submenu (OPTIONAL DUAL IF RACK
MOUNT CONVERTERS)
Comtech EF Data provides the ability to switch the output IF frequency between
70 MHz and 140 MHz. For converters equipped with this optional hardware
configuration, the (CONFIG:) OUTPUT submenu appears as follows:
Frq=03627.125 MHz IF=140
Atten=02.00 dB Rx = Off
On the top line, press the ENTER key to set the converter RF Frq (Frequency).
You may edit the current frequency channel from RFLow to RFHigh MHz (e.g.;
10950.000 to 12750.000 MHz for Model DT-4513) in 125 kHz steps (1 kHz steps
optional). Use the   keys to select a digit, and then use the  keys to
change that digit.
Next, set the converter IF Frequency. Use the   keys to jump to this setting,
and then use the  keys to select 70 MHz or 140 MHz. The default is 70 MHz.
On the bottom linescreen that follows, set the converter Atten (Attenuation).
You may select an attenuation setting from 0.00 to 25.00 dB in 0.25 dB steps (0.1
dB steps optional). The default setting is 10.00 dB. Use the   keys to select a
digit, and then use the  keys to change that digit. Press ENTER.
1) The actual IF bandwidth is maintained as the standard ±18 MHz
(±20 MHz) of the 70 MHz configurations.
2) The mute behavior after changing the IF frequency is the same as
the normal mute behavior after changing the RF frequency.
3) You may not “mix” dual IF converters with standard converters
when operating in a redundant system.
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(CONFIG:) REMOTE (Remote Control) Submenu
Remote Control: Local
SERIAL ETHERNET
Use the   keys to select Local, SERIAL, or ETHERNET. Press ENTER.
6.2.3.2.1 (REMOTE:) Local
1) When you select Local mode, remote monitoring is possible, but
remote control is disabled.
2) A number of operations are possible in Local mode only. If you are
in Serial or Ethernet mode during such tasks, the unit alerts you to
this remote state:
Remote Mode: press ENTER
for local mode, or CLEAR
Press ENTER to switch to Local Mode to continue with your task, or
press CLEAR to exit the task and remain in the active mode.
6.2.3.2.2 (REMOTE:) SERIAL
Serial Mode = RS-232
Addr=001 Baud=9600 8-N-1
On the top line, use the  keys to set the mode to RS-232 or RS-485. Press
ENTER. On the bottom line, set the Serial address (Addr). Use the   keys to
select a digit, and then use the  keys to change that digit. The valid range of
addresses is from 001 (default) to 255.
Next, set the Baud rate. Use the   keys to select a parameter, and then use
the  keys to select your desired baud rate. Available choices are 1200, 2400,
4800, 9600 (default), 19K2, and 38K4.
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Finally, set the asynchronous character format. Use the   keys to select the
parameter, and then use the  keys to select the format. The available
choices (i.e., number of data bits; odd, even, or no parity; number of stop bits) are
8-N-1, 7-E-2, or 7-O-2. Press ENTER.
6.2.3.2.3 (REMOTE:) ETHERNET
The DT-4500 Series C- and Ku-Band Down Converters, as initially
released, do not feature a rear panel ‘Ethernet’ port. Only current
production units offer Ethernet Interface operation. See Chapter 4.
FRONT AND REAR PANEL CONNECTORS for more information.
ADDRESS GATEWAY SNMP
MAC = 00-06-B0-00-00-0F
On the top line, use the   keys to select ADDRESS, GATEWAY, or SNMP. The
bottom line displays the read-only unit MAC address. Press ENTER.
6.2.3.2.3.1 (REMOTE:) ETHERNETADDRESS
IP Address/Range:
192.168.001.002/24
Edit the Management IP Address and Range for the rear panel ‘Ethernet’
100BaseTX port. Use the   keys to select a digit, and then use the  keys
to change that digit. Press ENTER.
6.2.3.2.3.2 (REMOTE:) ETHERNETGATEWAY
Ethernet IP Gateway:
192.168.001.002
Edit the IP Gateway Address for the rear panel ‘Ethernet’ 100BaseTX port. Use
the   keys to select a digit, and then use the  keys to change that digit.
Press ENTER.
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6.2.3.2.3.3 (REMOTE:) ETHERNETSNMP
COMMUNITIES
TRAPS
Use the   keys to select COMMUNITIES or TRAPS. Press ENTER.
(REMOTE:) ETHERNETSNMPCOMMUNITIES
SNMP Communities:
READ WRITE TRAP
Use the   keys to select READ, WRITE, or TRAP. Press ENTER.
(REMOTE:) ETHERNETSNMPCOMMUNITIESREAD
Read Community:
public
View or edit the SNMP Read Community string. To edit, use the   keys to
select a character, and then use the  keys to change that character. Press
ENTER.
(REMOTE:) ETHERNETSNMPCOMMUNITIESWRITE
Write Community:
private
View or edit the SNMP Write Community string. To edit, use the   keys to
select a character, and then use the  keys to change that character. Press
ENTER.
(REMOTE:) ETHERNETSNMPCOMMUNITIESTRAP
Trap Community:
comtech
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View or edit the SNMP Trap Community string. To edit, use the   keys to select
a character, and then use the  keys to change that character. Press ENTER.
(REMOTE:) ETHERNETSNMPTRAPS
TRAPIP1 TRAPIP2 VERSION
Use the   keys to select TRAPIP1, TRAPIP2, or VERSION. Press ENTER.
(REMOTE:) ETHERNETSNMPTRAPSTRAPIP1/TRAPIP2
If both Trap IP Addresses are 000.000.000.000, it means that Traps are
disabled.
TRAP IP ADDRESS #1:
000.000.000.000
TRAP IP ADDRESS #2:
000.000.000.000
Typical for both submenus: View or edit the Trap Destination IP Address. To
edit, use the   keys to select a digit, and then use the  keys to change
that digit. Press ENTER.
(REMOTE:) ETHERNETSNMPTRAPSVERSION
Trap Version:
SNMPv1 SNMPv2
Use the  keys to set the trap version as SNMPv1 or SNMPv2. Press ENTER.
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(CONFIG:) REDUNDANCY Submenu
See Appendix A. REDUNDANT SYSTEM OPERATION for detailed
information about using the front panel menus for redundancy
configuration and operation.
This menu branch is functional in LOCAL MODE ONLY.
1:1 Redundancy is an optional feature for the DT-4500. If you attempt to select
any feature from this menu branch, and either Redundancy Configuration is off
or the converter is the primary operating unit, the Redundancy menu branch
appears as follows:
Redundancy: MODE
Otherwise:
Redundancy: MODE
Auto/Manual FORCE HSB
Use the   keys to select MODE, Auto/Manual, FORCE, or HSB (High Speed
Bus). Press ENTER.
6.2.3.3.1 (REDUNDANCY:) MODE
Redundancy Config = On
CONVERTER = #BU
1:01
On the top line, use the   keys to select the Redundancy Config setting, and
then use the  keys to toggle operation as On or Off.
On the bottom line, when Redundancy Mode = On, use the   keys to navigate
to the Converter Selection setting, and then use the  keys to toggle the
converter operational preference as #BU (the backup down converter) or online
converter #01 through #12.
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Note the following:
• With CONVERTER = #BU, the unit is set as the standby, or backup unit.
This mode of operation is indicated on the right-hand side of the bottom
line as 1:0#.
• With CONVERTER = #01-12, the selected unit is set as the primary
operating unit. The mode of operation is indicated on the right-hand side
of the bottom line as POL=1.
6.2.3.3.2 (REDUNDANCY:) Auto/Manual
CONVERTER 123456789ABC
AUTO/MAN A-----------
Use this submenu to define backup as Auto (Automatic) or MAN (manual). This
setting allows automatic switching by the BU if both units are in Redundancy
Mode.
This command is only accepted by the BU. If a chain converter is set to Manual
Mode, the BU logs the occurrence and does not act upon further information
from the converter until it is returned to Auto Mode.
On the top line, this line displays the unit in use and its Application ID
(identification label).
On the bottom line, use the   keys to navigate to the AUTO/MAN setting,
and then use the ▲ ▼ keys to set toggle switch over as A (Automatic) or M
(Manual).
6.2.3.3.3 (REDUNDANCY:) FORCE
CONV 01 OFFSET=+00.00 DB
ACTIVATE BACKUP = NO
On the top line, use the   keys to navigate to the OFFSET operational
threshold setting (i.e., the limit defined to automatically trigger switchover to the
backup unit), and then use the  keys to set that value in 0.25 dB increments.
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On the bottom line, use the   keys to navigate to the ACTIVATE BACKUP
setting, and then use the  keys to set toggle switchover as NO (i.e., no
backup occurs at the defined operational threshold), or FORCE (i.e., switchover
occurs automatically if operation exceeds the predefined operational threshold).
Note that this submenu is operational only with a backup unit assigned, and with
the switchover set as Automatic. In the absence of a designated backup unit
and/or switchover set as Manual, this message displays:
NO UNITS CURRENTLY
BACKED UP OR IN MANUAL
Press ENTER or CLEAR to return to the previous menus, and then reconfigure the
system to operate as intended.
6.2.3.3.4 (REDUNDANCY:) HSB
CONV# 01 FRQ= 3625.000
ATTN=00.00 AUTO
OK
In the "Daisy Chain" configuration, the BU communicates with the online units
through the HSB (high-speed bus data interface). The BU detects faults and
reconfigures itself to replace the faulted converter. The BU also uses the HSB to
monitor configuration changes made to an online converter. Changes in
frequency, gain, or polarity are immediately entered into the backup table as
well as information from new online units. The HSB does not interfere with the
remote serial communication link access to any of the converters in the chain.
Use the HSB submenu to configure operation of the ‘J3 | HSB’ connector that is
provided on the optional Receive Switch Module (RSM) and Transmit Switch
Module (TSM). When an RSM or TSM is not configured for operation, this
message displays:
CONV #01 – NO DATA
HSB NO RESPONSE
Press ENTER or CLEAR to continue.
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(CONFIG:) FAULTRECOVERY Submenu
Fault Recovery: Auto
Use the   keys to select Fault Recovery as Manual or Auto (automatic). Press
ENTER. The default operation is Auto.
6.2.3.5
(CONFIG:) COLDSTART Submenu
Cold Start Mode, if enabled, mutes the converter output signal for a predetermined time – 15 minutes – after power is applied to the converter, to
ensure that the reference oscillator is stable.
This function is disabled in redundant systems.
Cold Start = Disabled.
When redundancy is not active, use the ▲▼ keys to select Cold Start as Enabled
or Disabled. Press ENTER. The default operation is Disabled.
6.2.4
(SELECT:) MONITOR Menu Branch
Three read-only information screens provide monitoring of a number of
operating voltage, temperature and tuning parameters. Use the  keys to
page between screens.
These examples are provided for reference only – the data that displays will vary
depending on your actual operating conditions:
15VDC=15.6V 14VDC=14.0V ▲
VCC=0.5V 5VDis=0.50V
▼
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Converter Temp = +30.0C ▲
IFLO Tuning = 0.38V ▼
Synth Tuning: Sum=0.32V ▲
Coarse=06.0V Fine=03.5V ▼
Press ENTER or CLEAR to continue.
6.2.5
(SELECT:) FAULTS Menu Branch
The MASK selection is disabled in redundancy systems.
CURRENT
STORED
MASK
Use the   keys to select CURRENT, STORED, or MASK. Press ENTER.
6.2.5.1
(FAULTS:) CURRENT
Four read-only information screens are provided to monitor a number of
operating parameters and return back whether the parameters are OK
(operating within normal ranges), or FT (currently faulted). These examples are
provided for reference only – the data varies depending on the operating
conditions for the system in use:
Power Faults: 15VDC=OK
14VDC=OK VCC=OK
▲
▼
IFLO Lock Detect = OK
▲
▼
Synth Faults: SumLD=OK ▲
FineLD=OK CoarseLD=OK ▼
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Conv Temperature = OK ▲
High Speed Bus = OK ▼
Use the  keys to page between screens. Press ENTER or CLEAR to return to
the previous menu.
6.2.5.2
(FAULTS:) STORED
VIEW
CLEAR-ALL
Use the   keys to select View or Clear-All. Press ENTER.
6.2.5.2.1 (FAULTS:) STORED VIEW
If you select View and no faults exist in the stored faults log, the system displays
this message:
No Stored Faults.
Otherwise, stored faults log entries display as per this example:
Log05 01/23/11 09:27:15 ▲
Fault – HSB
▼
Use the  keys to page between screens. The faults log can store up to 100
faults. When a fault condition occurs, the unit assigns a number to the fault (in
the order received), date- and time-stamps the fault, and provides a condensed
description of the issue. When the fault condition clears, this action is recorded
in the same fashion as the fault was originally recorded, as shown per this
example:
Log09 01/23/11 10:45:35 ▲
Clear – HSB
▼
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Once the number of faults reaches 100, the 100th fault displays as “ER.” The
stored faults remain in memory until you execute the CLEAR-ALL command.
Press ENTER or CLEAR to return to the previous menu.
6.2.5.2.2 (FAULTS:) STOREDCLEAR-ALL
Clear All Stored Faults
No Yes
Use the   keys to select No or Yes. Press ENTER.
When you select Yes, the unit clears the faults log and returns you to the
previous menu. However, if there are faults present on the unit at this time, the
unit will re-stamp the faults and generate new log entries.
6.2.5.3
(FAULTS:) MASK
The MASK selection is disabled in redundancy systems.
Ext Ref Lock Detect:
Fault Masked
Set the fault handling for the External Reference, when applicable. Use the  
keys to select Fault or Masked. Press ENTER.
6.2.6
(SELECT:) PRE-SELECTS Menu Branch
You may create (program) up to 32 operating configurations and recall them as
needed via the LOAD submenu. If your unit does not contain any pre-selects, the
screen initially appears as follows:
#XX LOAD PROGRAM CLEAR
No Pre-Select Programmed
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Otherwise, when pre-selects are programmed and available, entries display as
per this example:
#03 LOAD PROGRAM CLEAR
03625.125 MHz 01.25 dB
▲
▼
Use the  keys to browse through the stored pre-selects (#01 through #32, as
available). Then, use the   keys to select LOAD, PROGRAM, or CLEAR. Press
ENTER.
6.2.6.1
(PRE-SELECTS:) LOAD
Load this pre-select
into converter? No Yes
LOAD recalls the stored pre-select from the active memory slot. It is functional
when pre-selects have previously been programmed into the unit using the
PROGRAM submenu. Use the   keys s to select No or Yes. Press ENTER.
6.2.6.2
(PRE-SELECTS:) PROGRAM
Program pre-select? #XX
04200.000 MHz 01.25 dB
PROGRAM saves a defined set of operating parameters into the available
memory slot as a PRE-SELECT.
On the top line, use the  keys to select the desired pre-select slot (from #01
to #32).
On the bottom line, typical for the frequency and attenuation values, use the 
 keys to select a digit, and then use the  keys to change that digit. Press
ENTER. The unit stores these edited values into the active pre-select slot, where
they may be recalled later via the LOAD submenu.
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(PRE-SELECTS:) CLEAR
CLEAR deletes a previously programmed pre-select from the active memory slot.
If a pre-select is present in the active memory slot, once you select CLEAR this
message displays:
Clear this pre-select?
No Yes
Use the   keys to select No to reject the CLEAR command. Otherwise, select
Yes to free up the slot for future pre-select programming needs. If the active
memory slot is empty, this message displays before returning you to the PRESELECTS menu branch:
This Pre-Select has
Never Been Programmed!
6.2.7
(SELECT:) UTILITY Menu Branch
TIME DISP FIRMWARE AID
REFOSC SLOPE LAMP-TEST
Use the   keys to move the cursor to the desired choice. Press ENTER. The
function of each UTILITY submenu is as follows:
• TIME Submenu – This allows configuration of the Real-Time Clock.
• DISP Submenu – This allows adjustment of the Video Fluorescent Display
(VFD) brightness level.
• AID Submenu – This allows you to create a unit label.
• REFOSC Submenu – This allows adjustment of the converter External
Reference Oscillator frequency.
• SLOPE Submenu – This allows adjustment of the converter slope settings.
• LAMP-TEST Submenu – this executes a diagnostic test of the front panel
LEDs and VFD.
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(UTILITY:) TIME (Real-Time Clock) Submenu
This function follows Military time format (00 to 24 hours).
Edit Real-Time Clock:
HH:MM:SS MM/DD/YY
Edit the time and date settings of the real-time clock. Use the   keys to select
a digit to edit, and then use the  keys to change that digit. Press ENTER.
6.2.7.2
(UTILITY:) DISP (VFD Display) Submenu
VFD Display Brightness:
100%
Edit the display brightness. Use the  keys to select a brightness value of
25%, 50%, 75%, or 100%. Press ENTER when the brightness is suitable.
6.2.7.3
(UTILITY:) FIRMWARE Submenu
THESE MENUS ARE INTENDED FOR DIAGNOSTIC PURPOSES ONLY. DO
NOT CHANGE AN IMAGE UNLESS OTHERWISE INSTRUCTED BY
COMTECH EF DATA PRODUCT SUPPORT.
This series of submenus permits you to view information about the DT-4500
internal firmware. The converter can store two complete firmware images, and
you can select which image will be loaded the next time the unit reboots.
Firmware Images:
INFO SELECT
Use the   keys to select INFO or SELECT. Press ENTER.
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6.2.7.3.1 (FIRMWARE:) INFO
Firmware Info: BOOTROM
IMAGE#1 IMAGE#2
Use the   keys to select BOOTROM, IMAGE#1 or IMAGE#2. Press ENTER. to
view the information.
Typical for all nested screens, the top line identifies the firmware number.
Where applicable, ‘x’ denotes the firmware revision letter. The bottom line
identifies the Firmware Version Number (e.g., 1.2.3) and the firmware build date
in month/day/year format.
6.2.7.3.1.1 (FIRMWARE:) INFOBOOTROM
Bootrom: FW-0000201
X.X.X
MM/DD/YY
6.2.7.3.1.2 (FIRMWARE:) INFOIMAGE#1/#2
Where ‘#X’ denotes the IMAGE#1 or IMAGE#2 firmware load, the IMAGE#1 and
IMAGE#2 firmware load info screens are nested as follows:
IMAGE#X: Bulk
APP FPGA
Use the   keys to select Bulk, App, or FPGA. Press ENTER.
(FIRMWARE:) INFOIMAGE#1/#2BULK
Bulk#X: FW-0000202x
X.X.X
MM/DD/YY
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(FIRMWARE:) INFOIMAGE#1/#2APP
App#X:
X.X.X
FW-0000203x
MM/DD/YY
(FIRMWARE:) INFOIMAGE#1/#2FPGA
FPGA#X: FW-0000204
X.X.X
MM/DD/YY
6.2.7.3.2 (FIRMWARE:) SELECT
Current Active Image: #1
Next Reboot Image: #1 #2
Use this submenu to select the Current Active Firmware Image.
The read-only top line shows the Current Active Image. On the bottom line, use
the   keys to select #1 or #2 as the Next Reboot Image (i.e., the image that
will be active the next time the unit is rebooted). Press ENTER.
If the image that you select is already set as the designated Next Reboot Image,
this message displays:
THAT IMAGE IS ALREADY
CURRENT. NO CHANGE MADE.
You may repeat the task by instead selecting the alternate image.
6.2.7.4
(UTILITY:) AID (Application Identification String) Submenu
Edit AID Message?
No Yes
The Application Identification (AID) submenu allows you to create a customized
message. The AID may serve to identify the satellite, either transponder, beam,
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destination or other aspects of the application that may be significant to
operations. The default AID is "AID MESSAGE".
At the “Edit AID Message?” prompt, use the   keys to select No or Yes. Press
ENTER.
Typical for the top and bottom lines of the message, use the   keys to select
a character, and then use the  keys to change that character. A maximum of
24 characters are available on each line – 48 characters in all. Permissible
characters are: [Space]( )* + - , . / 0-9 and A-Z.
An example of an AID message is as follows:
DT-4500 SERIES
48 CHARS MAX TST MESSAGE
Press ENTER once you have composed your message. At the top level splash
screen (which identifies the product in use), you may use the CLEAR key to
toggle between the splash screen and the AID message.
6.2.7.5 (UTILITY:) REFOSC (Reference Oscillator Adjustment)
Submenu
Reference frequency
adjustment = 087
Set your reference oscillator adjustment value. Use the   keys to select a
digit, and then use the  keys to change that digit. The default adjustment
value is 087, with allowable values from 0 to 255. Press ENTER.
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(UTILITY:) SLOPE Submenu
Converter slope
adjustment = 0.0
Set your converter slope adjustment value. Use the   keys to select a digit,
and then use the  keys to change that digit. The default converter slope
adjustment is 0.0, with allowable values from 0.0 to 1.0. Press ENTER.
6.2.7.7
(UTILITY:) LAMP-TEST Submenu
Start Lamp Test?
No Yes
Use the   keys to select No or press CLEAR to exit this submenu. Otherwise,
select Yes and press ENTER to continue. The test begins with this message:
Lamp Test in Progress
Please Wait
The front panel runs through a series of diagnostics: the LED array cycles, and
then the VFD generate a series of test patterns.
The LEDs and VFD return to their previous display state upon successful
completion of the test. Once the test has run, press CLEAR to return to the main
menu.
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Chapter 7. ETHERNET
INTERFACE OPERATION
7.1 Overview
Operation of the Ethernet Interface is available when you connect a usersupplied, Windows-based PC to the DT-4500 rear panel ‘Ethernet’ 100BaseTX
RJ-45 port.
The DT-4500 Series C- or Ku-Band Down Converter, as initially released,
does not feature a rear panel ‘Ethernet’ port. Only current production
units offer Ethernet Interface operation. See Chapter 4. FRONT AND
REAR PANEL CONNECTORS for more information.
Three protocols are available for Ethernet remote M&C. Operate these protocols
separately.
• Simple Network Management Protocol (SNMP). This requires a usersupplied Network Monitoring System (NMS) and a user-supplied
Management Information Base (MIB) File Browser.
CAUTION
Comtech EF Data recommends use of the Ethernet-based SNMP
interface for advanced users only. All other users are strongly
encouraged to use the HTTP (Web Server) Interface for remote
Monitor and Control (M&C) of the unit.
•
•
Telnet Interface. You may use the serial remote control protocol via this
interface. This requires use of Windows Command-line, or a usersupplied terminal emulation program such as HyperTerminal.
HTTP Interface. This requires a compatible user-supplied web browser
such as Internet Explorer.
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7.1.1 Prerequisites
Before you proceed with Ethernet remote product management, make sure the
following is true:
• The converter is operating with the latest version firmware files.
• The User PC is running a terminal emulation program for operation of the
Telnet Interface.
• The User PC is running a compatible web browser for operation of the
HTTP Interface.
• The User PC is connected to the unit’s RJ-45 ‘Ethernet’ port.
• You have recorded the unit’s Management IP Address.
7.2 SNMP Interface
SNMP is an Internet-standard protocol for managing devices over IP networks. An
SNMP-managed network has three key components:
• The managed device. This includes this unit.
• The SNMP Agent. This software runs on the converter. The unit SNMP
Agent supports both SNMPv1 and SNMPv2.
• The user-supplied Network Management System (NMS). This software
runs on the User PC.
7.2.1 Management Information Base (MIB) Files
An MIB file is used for SNMP remote management of a unique device, and
consist of a tree of nodes called Object Identifiers (OIDs). Each OID provides
remote management of a particular function. These MIB files should be compiled
in a user-supplied MIB Browser or SNMP Network Monitoring System server. In
these unit MIB file names, the letter ‘x’ represents the revision of the file.
7.2.1.1
•
•
ComtechEFData Root MIB File
FW-0000235x.mib
ComtechEFData MIB file gives the root tree for all Comtech EF Data
products and consists of only the following OID:
o Name: comtechEFData
o Type: MODULE-IDENTITY
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o OID: 1.3.6.1.4.1.6247
o Full path: iso(1).org(3).dod(6).internet(1).private(4).enterprises(1).
comtechEFData(6247)
o Module: ComtechEFData
7.2.1.2
•
•
FW-0020205x.mib
MIB file consists of all of the OID’s for management of the unit functions.
7.2.1.3
•
•
DT-45xx Common MIB File
DT-45xx Traps MIB File
FW-0020206x.mib
Trap MIB file provides SNMPv1 traps common for the unit.
7.2.2 SNMP Community Strings
CAUTION
In SNMP v1/v2, the SNMP 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.
For correct SNMP operation, the converter MIB files must be used with
the associated version of the unit M&C. See the DT-45xx FW Release
Notes for information on the required FW/SW compatibility.
The DT-45xx uses Community Strings as a password scheme that provides
authentication before gaining access to the router agent’s MIBs. They are used
to authenticate users and determine access privileges to the SNMP agent. The
DT-45xx defines three Community Strings for SNMP access:
• Read Community
default = public
• Write Community
default = private
• Trap Community
default = comtech
Type the SNMP Community String into the user-supplied MIB Browser or
Network Node Management software.
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7.2.3 SNMP Traps
The DT-45xx SNMP agent supports both SNMPv1 and v2. The Traps
file needs to be compiled only if SNMPv1 traps are to be used.
The DT-4500 has the ability to send out SNMP traps when certain events occur in
the unit. For example, the unit sends out traps when an alarm or a fault occurs
or clears. Which style of traps the DT-4500 sends are configured using the
DT-45xxSNMPTrapVersion OID.
The DT-45xx supports MIB2 SNMPv1 traps and SNMPv2 notifications.
7.3 Telnet Interface
See Chapter 8. SERIAL INTERFACE OPERATION for detailed information
about using remote command and queries.
Figure 7-1. Telnet Interface Example – Windows Command-line
The DT-4500 provides a Telnet interface for equipment M&C via the standard
equipment Remote Control protocol.
Telnet is implemented in the Ethernet M&C in a "Telnet wrapper". When the
user Telnets to the unit, it emulates a local EIA-232C or EIA-485 serial connection
to the unit. You can then type the same command syntax that he would use from
a serial remote terminal and the Ethernet M&C "unwraps" the Telnet packet and
sends it on to the base unit processor, which responds to it as if it was a serial
remote command.
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The Telnet interface requires user login at the Administrator level and
Read/Write level. Once logged into the Telnet interface as the Administrator, you
have access to the optional serial-based Remote Control Interface. Figure 7-1
shows an example of the login process for remote control operation.
7.3.1 Using HyperTerminal for Telnet Remote Control
Operation
Figure 7-2. Telnet Interface Example – HyperTerminal
There is a disadvantage when using Windows Command line as a Telnet client
with the optional Remote Control protocol. For the messages coming from the
Telnet Server, Command line cannot translate a carriage return command (\r) to
a carriage return + line feed command (\r\n). Therefore, any multi-line Targetto-Controller response (e.g., the response to the FRW? query) shows as one line,
with the latter lines overwriting the previous lines.
To see the full response messages, you can use the HyperTerminal terminal
emulation program configured as a Telnet client. Figure 7-2 shows an example of
the login process when using HyperTerminal as the Telnet interface.
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Configure HyperTerminal for Telnet Remote Control
Operation
Figure 7-3. Configure HyperTerminal
See Figure 7-3. Do these steps:
• Make sure to define the Connect To Telnet connection properties
correctly (File  Properties) (Figure 7-3, left):
a. Enter the unit’s Traffic/Management IP Address as the “Host
address” (e.g., 192.168.1.1).
b. Enter TCP Port 23 as the “Port number”.
c. Set “Connect using” to TCP/IP (Winsock) instead of COM1 or
COM2.
d. Click [OK] to save your settings.
• For ASCII Setup (File  Properties  Settings  ASCII Setup) (Figure
7-3, right):
a. Check the “Send line ends with line feeds” option in the ‘ASCII
Sending’ section.
b. Check the “Append line feeds to incoming line ends” option in
the ‘ASCII Receiving’ section.
c. Click [OK] to save your settings.
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7.4 HTTP (Web Server) Interface
A user-supplied web browser allows the full monitoring and control (M&C) of the
DT-4500 from its HTTP Interface. This non-secure embedded web application is
designed for, and works best with, Microsoft Internet Explorer Version 5.5 or
higher.
7.4.1 HTTP Interface User Login
1) You must use DT-4500 Front Panel operation to select “Ethernet”
as your mode of operation prior to login. Failure to configure the
unit accordingly will cause the Login dialogue box to return you
to a blank web page.
2) You must retrieve the assigned Management IP Address from the
DT-4500 Front Panel menu:
(SELECT:) CONFIGRemoteEthernetAddress
See Chapter 6. FRONT PANEL OPERATION for further details. You
may also need to consult with your network administrator to
determine the appropriate Management IP address assignment
for your converter.
Do these steps:
1. From the PC, enter the default Management IP Address for the unit (e.g.,
http://192.168.1.4) into the Address area of the browser.
2. In the Login window, type the User name and Password, and then click
OK.
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The factory defaults for these names/passwords are:
• Admin
comtech/comtech
• Read/Write
opcenter/1234
• Read Only
monitor/1234
Failure to enter the correct User name and Password will return you to
the Login window. Should you continue to specify an invalid User name
or Password, the message “You do not have security privilege to access
this area.” displays.
Otherwise, upon entry of the valid IP address and login information
DT-4500 Web Server Interface “splash” page displays, similar to the
example shown in Figure 7-4. The unit and firmware version in this
example will differ from your setup.
Figure 7-4. HTTP Interface “Splash” Page Example
The appearance and function of all DT-4500 Series HTTP Interface pages
are, for all purposes, identical to that of the DT-4503C HTTP Interface
page examples that are featured throughout this chapter.
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7.4.2 HTTP Interface Features
7.4.2.1
Menu Tree
Figure 7-5 Illustrates the menu hierarchy for the HTTP Interface. It features four
navigation tabs (shown in blue). Primary page hyperlinks (grey) grant access to
individual web pages.
Home
Admin
Config
Status
Home
Access
Converter
Summary
Contact
SNMP
Ref
Faults
Support
Pre-Selects
Utility
Redundancy
Figure 7-5. HTTP Interface Menu Tree (FW Ver. 1.3.4)
7.4.2.2
Page Navigation
The HTTP Interface has four navigation tabs at the top of each page. Click a
navigation tab to see its page hyperlinks. Click a page hyperlink to open a page.
This manual uses a convention for all web pages to show
you how to navigate to the featured page: Navigation Tab
| Page Hyperlink. For example, “Home | Home” instructs
you to click the ‘Home’ navigation tab, and then select the
‘Home’ page hyperlink.
7.4.2.3
Page Sections
This manual explains the purpose and operation for each
Web page and its sections. Each page has one or more
sections. The title at the upper-left corner of each page or
section describes its operational features. Each section can
have editable fields, action buttons and read-only displays
for a specific function.
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Action Buttons
Action buttons are important in the HTTP Interface. Click an
action button to do one of these tasks:
• Click [Refresh] to see the latest page data.
• Reset changed parameters to remove unsaved changes.
• Click [Submit] to save changes.
If you change any parameters, make sure to click the related action
button before you leave the page. If you go to another page without
first clicking the action button, your changes are not saved.
7.4.2.4.1
Page Refresh
Many of the pages feature a [Refresh] action button located
adjacent to the uppermost Page Section label. You may click
[Refresh] at any time to update the page with its latest
reported operational data and current configured settings.
7.4.2.5
Drop-down Lists
A drop-down list lets you choose from a list of selections.
Left-click the drop-down button to open the list. Then, leftclick on an item to select that choice.
7.4.2.6
Text or Data Entry
Text boxes let you type data into a field. An action button
can be associated with a single text box, or a group of text
boxes. For any text box, left-click anywhere inside the box
and type the desired data into that field. Make sure to
press ENTER when done typing.
Click the related action button to save the data.
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7.5 HTTP Interface Page Examples and Descriptions
See Chapter 6. FRONT PANEL OPERATION for detailed descriptions of
the configuration and monitoring features available throughout this
interface.
The page figures provided in this section are intended for reference
only. Your setup will differ.
7.5.1 Home Pages
Click the Home tab, and then select the Home, Contact, or Support hyperlink to
continue.
7.5.1.1
Home | Home
Use this page to identify the product in use. Click the Home navigation tab or the
nested hyperlink to return to this page from anywhere in the HTTP Interface.
Figure 7-6. ‘Home | Home’ Page
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Home | Contact
For all product support, please call:
+1.240.243.1880
+1.866.472.3963 (toll free USA)
Figure 7-7. ‘Home | Contact’ Page
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Home | Support
The Administrator must configure the SMTP server, domain name, and
destination on the ‘Admin | Access’ page (Sect. 7.5.2.1) in order to use
this page.
Use this page to compose an e-mail message when you have questions about or
problems with the unit.
Figure 7-8. ‘Home | Support’ Page
The ‘Home | Support’ page (Figure 7-8) uses Simple Mail Transport Protocol
(SMTP) to send e-mail to Comtech EF Data Product Support:
[email protected]
Enter the Contact Information and compose a message in the Problem Report
text window. The Problem Report section allows up to 256 characters maximum.
Click [Submit Email] to send the message.
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7.5.2 Admin (Administration) Pages
The ‘Admin’ pages are available only to users who have logged in using
the Administrator Name and Password.
Click the Admin tab, and then select the Access or SNMP hyperlink to continue.
7.5.2.1
Admin | Access
The Administrator must use this page as the means to set up user names,
passwords, the E-mail server, and the host IP addresses as needed to facilitate
communication with the HTTP Interface.
Figure 7-9. ‘Admin | Access’ Page
Network Maintenance
IP Gateway, IP Address/Range – Enter the desired IP Gateway Address and
Management IP Address/ Range in these text boxes.
MAC Address – The MAC Address is read-only. It is set at the factory to a
guaranteed unique address. It cannot be changed.
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Click [Change IP Address]. Click [Reset] to revert to the previously assigned IP
Gateway and IP Address/Range,
System Account Access Information
Admin, Read/Write, and Read Only Names and Passwords:
The User name and Password can be any alphanumeric combination
with a maximum length of 10 characters. The factory defaults for these
names/passwords are:
• Admin
comtech/comtech
• Read/Write opcenter/1234
• Read Only
monitor/1234
SMTP Server – Specify the mail server IP address from where you want to send
the e-mail.
SMTP Domain Name / Destination – The Administrator can assign the SMTP
Domain Name and Destination. This is required if the e-mail feature of the
‘Home | Support’ page (Sect. 7.5.1.3) is to be used.
• For SMTP Domain Name, specify the domain of the e-mail server (usually
found to the right of the @ symbol in an e-mail address).
• For SMTP Domain Destination, specify the e-mail recipient name (usually
found to the left of the @ symbol in an e-mail address).
Click [Submit Access]. Click [Reset] to revert to the previously assigned System
Account Access Information.
Webpage Timeout
To set an automatic timeout to safeguard access to an already logged-in unit, use
the drop-down list to set the time value as 5 minutes or 8 hours, and then click
[Change].
The active session terminates if the unit remains idle (i.e., when no user activity
occurs) beyond the assigned Webpage Timeout. A valid user name and password
is then required to resume the HTTP Interface session.
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Admin | SNMP
Sect. 7.2 SNMP Interface
The Administrator must use this page to manage the SNMP (Simple Network
Management Protocol) settings.
Figure 7-10. ‘Admin | SNMP’ Page
Simple Network Management – Use the drop-down list to set the Simple
Network Management operational setting as Enabled or Disabled.
The Read, Write, and Trap Community Strings can be any combination of
characters and a length of 0 to 20 characters:
• The factory default Read Community String is public.
• The factory default Write Community String is private.
• The factory default Trap Community String is comtech.
SNMP Contact / SNMP Location / SNMP Name – Enter this identity information
in any alphanumeric combination with a length of 0 to 20 characters.
Enable Authentication Trap – Use the drop-down list to set Trap operation as
Enabled or Disabled.
The Administrator can assign up to two Trap IP addresses.
Trap Version – Use the drop-down list to set the Trap Version as SNMPv1 or
SNMPv2.
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7.5.3 Config (Configuration) Pages
Click the Config tab, and then select the Converter, Ref, Pre-selects, Utility, or
Redundancy hyperlink to continue.
7.5.3.1
Config | Converter
Use this page to configure the communications, operations, and alarms/faults
handling for the unit.
Figure 7-11. ‘Config | Converter’ Page
Converter
Frequency in MHz – Enter an operating RF Frequency in MHz, in 125 kHz steps (1
kHz steps optional); otherwise, this field displays as N/A.
Attenuation (dB) – Enter a valid attenuation level (00.00 to 20.00 dB) in 0.25 dB
steps (0.1 dB steps optional).
Click [Change Configuration]. Click [Reset] to revert to the previously assigned
parameters.
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Mute
Use the drop-down list to set the Configuration Mute Mode as On or Off. Click
[Change].
Carrier Mute Mode
Use the drop-down list to set the Carrier Mute Mode as On or Off. Click [Change].
Cold Start Mute
Use the drop-down list to set the Cold Start Mute function as On or Off. Click
[Change].
Fault Recovery
Use the drop-down list to set the Fault Recovery function as MANUAL or
AUTOMATIC. Click [Change].
Channel Slope Adjustment
Enter a slope value (0.0 to 1.0) in 0.1 steps. Click [Change].
Serial
Interface Type – Use the drop-down list to set the operating serial mode as
RS-485 or RS-232.
Remote Address – Enter a valid remote control address from 0001 to 9999.
Baud Rate – Use the drop-down list to set the operating baud rate as 100, 2400,
4800, 9600, 19200 or 38400 baud.
Data bits-Parity-Stop Bits – Use the drop-down list to set the asynchronous
character format as:
• 8-N-1 (8 data bits, no parity, 1 stop bit)
• 7-O-2 (7 data bits, odd parity, 2 stop bits
• 7-E-2 (7 data bits, even parity, 2 stop bits).
Click [Change Serial Configuration].
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Config | Ref
Use this page for monitor and control of the optional external reference
oscillator.
Figure 7-12. ‘Config | Ref’ Page
Reference Oscillator
External Reference Freq – This read-only item displays the operational value of
the external reference oscillator (i.e., 5 MHz or 10 MHz) is displayed here.
Reference Tuning (VDC) – This read-only item displays the currently defined
Reference Frequency tuning adjustment value.
External Reference Lock – This read-only item displays the External Reference
Lock state.
Tuning Adjustment (0-255) – Enter a numeric value for the reference oscillator
tuning voltage here. The default value is 087, with allowable values from 0 to
255.
Click [Submit].
External Reference Lock Detect Mask
Use the drop-down list to set the External Reference Lock Detect Mask function
as FAULT or MASKED. Click [Submit].
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Config | Pre-selects
Use this page to manage the converter operational pre-selects.
Figure 7-13. ‘Config | Pre-selects’ Page
Pre-Selects
You may create (program) up to 32 operating configurations, and load (recall)
them as needed.
Prior to the creation of any pre-selects, the Frequency and Attenuation
columns are populated with null values.
To program any pre-select (Numbers 01 through 32), enter an operating RF
frequency in MHz, in 125 kHz steps (1 kHz steps optional), and an attenuation
level from 00.00 to 20.00 dB in 0.25 dB steps (0.1 dB steps optional). Click
[Change Configuration] to save (program) the pre-select for future loading
(selection).
Load Pre-Select
Use the drop-down list to load (select) a previously defined pre-select from
memory. Click [Change].
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Config | Utility
Use this page to configure a variety of converter operating parameters.
Figure 7-14. ‘Config | Utility’ Page
Date
Enter a date in the form MM/DD/YY (where MM = month [01 to 12], DD = day
[01 to 31], and YY = year [00 to 99]).
Time
Enter a time in the form HH:MM:SS (where HH = hour [00 to 23], MM = minutes
[00 to 59], and SS = seconds [00 to 59]).
Click [Change Date/Time].
Circuit ID
Enter a Circuit ID string of up to 48 characters – 24 characters per line. Click
[Change CID].
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Current Active Firmware Image
This read-only section identifies the selected Current Active Firmware Image. In
this example, Image 2 is the Current Active Firmware Image.
Next Reboot Image – Use the drop-down list to select Image 1 or 2. Click
[Submit].
Perform Soft Reboot
Click [Reboot Now] to reboot the unit using the Current Active Firmware Image.
Firmware Information
This read-only scrollable window identifies the Bootrom, Bulk Image#1 and Bulk
Image #2 firmware information.
Part Number
This read-only section displays the part number for the unit.
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Config | Redundancy
See Appendix A. REDUNDANT SYSTEM OPERATION for the functional
description of this page.
Use this page to configure the DT-4500’s Redundancy Switch Mode.
(TOP) Page with Redundancy Mode OFF
(BOTTOM) Page with Redundancy Mode ON
Figure 7-15. ‘Config | Redundancy’ Page
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7.5.4 Status Pages
Use these pages to review operational statistics, status windows, and the stored
faults table.
Click the Status tab, and then select the Summary or Faults hyperlink to continue.
7.5.4.1
Status | Summary
Use this read-only page to review pertinent information about the configured
setup of the converter, its current operating parameters, and the operational
status of the unit.
Figure 7-16. ‘Status | Summary’ Page
Typical for all sections, when operating parameters are within acceptable limits
for any parameter, the STATUS box color is GREEN and reads “OK.”
If a fault condition exists, the item’s STATUS box color changes to RED and reads
“FAULT.”
Terminal Status Change reads “YES” if the unit identifies any configuration
settings updates since the last reboot. Click [Clear] to reset this monitoring
feature (Terminal Status Change changes to read “NO”).
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Status | Faults
Use this read-only page to review the current stored faults.
Figure 7-17. ‘Status | Faults’ Page
This page features a scrollable window that displays the unread stored faults log
in sequential, date-stamped format.
Unread Stored Faults: ###
The section header displays the running tally of unread stored faults.
The event log displays the five oldest stored faults in the event log. The tally
decrements as events are transferred from the stored events log for display in
this window.
The bottom of the section provides the following management functions:
• Read Next Five Faults – Select this to display the next five unread stored
faults in the log.
• Clear Fault Log – Select this to clear all stored faults from the log.
• Initialize Faults Pointer – Select this to reset the internal pointer. This
allows queries to start at the beginning of the stored faults log.
Click [Submit].
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Chapter 8. SERIAL
INTERFACE OPERATION
8.1 Overview
1) Use of the word “converter” throughout this chapter applies to
either the Comtech EF Data DT-4500 Series C- or Ku-Band Down
Converter or the UT-4500 Series C- or Ku-Band Up Converter.
2) The pinout table for the rear panel ‘J1 | COM1’ connector is
provided in Sect. 4.2.3 Operational Connections.
Serial-based remote monitor and control (M&C) of the DT-4500 Series C- or KuBand Down Converter is possible by connecting the rear panel EIA-485/EIA-232C
‘J1 | COM1’ port to the serial port of a Windows-based User PC.
8.2 Communication Interfaces
The electrical interface is either an EIA-485 multi-drop bus (for the control of
many devices) or 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.
8.2.1
TIA/EIA-485 (RS-485)
For applications where you intend to monitor and control multiple devices, a fullduplex (4-wire plus ground) EIA-485 is preferred. Half-duplex (2-wire plus
ground) EIA-485 is possible, but is not preferred. In full-duplex EIA-485
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communication, there are two separate, isolated, independent, differentialmode twisted pairs, each handling serial data in different directions.
It is assumed that a 'Controller' device (a PC or dumb terminal) transmits data in
a broadcast mode via one of the pairs. Many 'Target' devices are connected to
this pair, and all simultaneously receive data from the Controller. The Controller
is the only device with a line-driver connected to this pair; the Target devices
have only line-receivers connected.
In the other direction: On the other pair, each Target has a Tri-state line driver
connected; the Controller has a line-receiver connected. All the line drivers are
held in high-impedance mode until one – and only one – Target transmits back to
the Controller. Each Target has a unique address; each time the Controller
transmits, the address of the intended recipient Target is included in a framed
'packet' of data. All of the Targets receive the packet, but only one (the
intended) replies. The Target enables its output line driver and transmits its
return data packet back to the Controller in the other direction on the physically
separate pair.
To summarize EIA-485 (Full Duplex) operation:
• Two differential pairs – one pair for Controller-to-Target, one pair for Targetto-Controller.
o Controller-to-Target pair has one line driver (Controller), and all
Targets have line-receivers.
o Target-to-Controller pair has one line receiver (Controller), and all
Targets have Tri-state drivers.
8.2.2
TIA/EIA-232 (RS-232)
This is a much simpler configuration in which you directly connect the Controller
device to the Target via a two-wire-plus-ground connection. One conductor
carries Controller-to-Target data via EIA-232 electrical levels, while the other
conductor carries Target-to-Controller data in the other direction.
8.2.3
Ethernet (100BASE-TX)
The unit implements a Telnet server that accepts Telnet terminal connections
using Transmission Control Protocol (TCP) on port 23. After you enter the
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username (default: comtech) and the password (default: comtech), the Telnet
server accepts the same operands used by the serial remote interface.
8.3 Access Methods
You may access a converter directly by using a physical address, or indirectly
through a backup converter by using a virtual address.
8.3.1
Direct (Physical) Access
You may directly access a converter via the EIA-232 interface, or the EIA-485
interface in a bus configuration.
In this control network, all converters including the backup converter are
paralleled on a common EIA-485 cable. Both up- and down converters can be
mixed on the cable as long as each converter has a unique physical address. Only
one EIA-485 port is required on the system's M&C PC. If you directly execute a
configuration change to a converter in a redundant system, the backup
converter detects the change via the High Speed Bus and updates its backup
tables.
For EIA-232 control, a direct EIA-232 cable connection is required for each
accessible converter. When using an external M&C PC, one EIA-232 port per
converter is required. This mode is commonly used with an ASCII terminal for
bench testing.
8.3.2
Indirect (Virtual) Access
You may indirectly address a converter in Redundancy Mode by adding a virtual
address to the backup converter's physical address. The virtual address
corresponds to the converter's position in the redundant subsystem. The backup
converter recognizes the virtual address and executes the command via the High
Speed Bus.
For control via the EIA-485 interface, you must use a common EIA-485 bus cable
to connect one or more backup converters to the system's M&C PC or ASCII
terminal. Only one EIA-485 port is required on the M&C PC. The backup
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converters may be mixed on the cable as long as each has a unique device
address. In order to indirectly address an online converter in the subsystem, you
must provide a virtual address. The virtual address corresponds to the
converter's position in the chain, beginning with the number 1. Only a backup
converter can recognize virtual addressing.
For control via the EIA-232 interface, your M&C PC must have one EIA-232 port
for each backup converter. You must establish virtual addressing by remote
command. All converters, including the backup converter, must be in the
Redundancy Mode.
8.4 Addresses
All converters are addressed in a command by the Device Address. The Device
Address consists of a physical address or a physical address plus a virtual
address.
8.4.1
Physical Address
Each converter in the system must have a unique physical address regardless of
the access method used. The physical address consists of a string of 1, 2 or 3
numbers from 1 to 255. The physical address is entered into a converter via the
front panel. For direct access, the physical address is the only address required
to command a converter. A backup converter or a standalone converter can only
be accessed with a physical address.
• EXAMPLE: 10 (Addresses converter whose physical address is 10.)
8.4.2
Virtual Address
In order to access a converter controlled by a backup converter indirectly, a
virtual address is required. A virtual address is appended to the physical address
of the backup converter with a "V". The virtual address is a number from 1 to 12
and corresponds to the position of the active converter from the backup
converter and is assigned by a configuration command.
• EXAMPLE: 10V3 (Addresses the third converter controlled by the backup
converter whose physical address is 10.)
8–4
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
8.4.3
MN/DT4500.IOM
Revision 2
IP Address
The IP address is a unique address on a network that supports Internet Protocol
(i.e., IPv4). An example of a network address using IPv4 is 192.168.1.4 (factory
default IP address). This value must be configured correctly to allow a Telnet
session to control the unit.
8.5 Basic Protocol
Whether in EIA-232 or EIA-485 mode, all data is transmitted as asynchronous
serial characters, suitable for transmission and reception by a UART.
All data is transmitted in framed packets. The Controller is assumed to be a PC or
ASCII dumb terminal that 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.
All messages from Controller-to-Target require a response, with one exception: 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.
8.5.1
Transmission Mode
The transmission mode is half duplex implemented in Command/Response
convention. This method requires the external system monitor and control unit
to initiate all communications by command and all converters to respond with
either confirmation or an error message. The confirmation may contain status
information.
8–5
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
8.5.2
MN/DT4500.IOM
Revision 2
Baud Rate
The supported baud rates are 1200, 2400, 4800, 9600, 19200, and 38400 baud.
The default baud rate is 9600.
8.5.3
Asynchronous Character Format
The default asynchronous character format is 8-N-1: 8 data bits; no parity; 1 stop
bit.
8.5.4
Character Set
The command syntax uses the printable ASCII character set.
8.5.5
Response Timeout
A minimum of 500 milliseconds is provided before declaring a “no response”
instance, at which time the command is re-transmitted.
8.5.6
Bus Inactivity Requirement
Comtech EF Data recommends that you provide a minimum of 50 milliseconds
bus inactivity between the receipt of a response from an addressed converter
and issuing the next command on the serial bus.
8–6
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
MN/DT4500.IOM
Revision 2
8.6 Message Structure
The structure of a Command, Response, or Error Message is as follows:
• Start Character
• Device Address
• Command or Response
• End of Message String
8.6.1
Start Character
The Start Character begins each message:
< = Start of a user command or query.
> = Start of a converter response.
8.6.2
Device Address
The Device Address consists of a Physical Address or a Physical Address and an
appended Virtual Address. This chapter uses “DEV” for the generic case
examples.
• EXAMPLE:
<DEV
8.6.3
Commands/Queries
A Command or Query is a variable length character string beginning with a
forward slash “ / ” – it contains either an instruction or an instruction with data
for a converter to act upon.
If data is passed by command, it is appended to the instruction by an underscore
“_”.
For a Query, data is retrieved by command. The underscore follows the
instruction, flagging the converter to supply data in a response.
• COMMAND EXAMPLE: <DEV/COM_xxx{cr} (Sends command data to a
converter)
• QUERY EXAMPLE: <DEV/COM_{cr} (Queries information from a
converter)
8–7
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
8.6.4
MN/DT4500.IOM
Revision 2
Confirmation Response
A confirmation will change the start character, and echo the Device Address and
Command. Any requested data is appended to the Command.
• EXAMPLE: >DEV/COM_xxx{cr}{lf}]
8.6.5
Error Response
If a converter cannot execute a Command or detects a protocol violation, an
error response is generated. An error is flagged by changing the “/” command
designator in the response to a "?".
Following the "?" error symbol are two characters which are unique error
symbols useful for computer analysis. The two error symbols are followed by a
text string explaining the error for the convenience of a human operator. This
document uses “ER” for the generic case examples response.
• EXAMPLE:
>DEV?COM ER Error Message {cr}{lf}]
8.6.6
End of Message
End of message strings were devised in such a way that an orderly screen
presentation would result when converters are controlled by simple ASCII
terminals.
8.6.6.1
Command Ending
The end of message for a command is a carriage return. This document uses
“{cr}” for the carriage return.
• EXAMPLE:
<DEV/COM_{cr}
8.6.6.2
Response Ending
End of message for a response is a carriage return ({cr}), line feed ({lf}), and a
right bracket (]): “{cr}{lf}]”
• EXAMPLE:
>DEV/COM_{cr}{lf}]
8–8
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
MN/DT4500.IOM
Revision 2
8.7 Remote Operation – Commands/Queries
8.7.1
8.7.1.1
Sect.
8.7.2.1
8.7.2.2
8.7.2.3
8.7.2.4
8.7.2.5
8.7.2.6
8.7.2.7
8.7.2.8
8.7.2.9
8.7.2.10
8.7.2.11
8.7.2.12
8.7.2.13
8.7.2.14
8.7.2.15
8.7.2.16
8.7.2.17
8.7.2.18
8.7.2.19
8.7.2.20
8.7.2.21
8.7.2.22
8.7.2.23
8.7.2.24
Command/Query Quick References
Utility Commands/Queries Quick Reference
Item
TIM
DAT
TPE
TPS
LRS
MAC
IPA
IPG
SPA
SBR
CON
LCD
SSM
SST
VFD
SRO
SSA
RET
PNM
FRW
FRM
IMG
AID
FRB
Description
Set Time
Set Date
Set Time Protocol
Set Time Protocol IP Address
Set Local / Remote Status
Get MAC Address
Get IP Address
Get IP Gateway
Set Physical Address
Set Baud Rate
Set LCD Contrast
Set LCD Brightness
Set Screen Saver Mode
Set Screen Saver Timeout
Set VFD Brightness
Set Reference Oscillator
Set Converter Slope Adjustment
Get Equipment Type
Get Part Number
Get Legacy Firmware Information
Get Firmware Information
Set Firmware Image
Set Application ID Message
Set Force Reboot
8–9
Syntax
<DEV/TIM_hh:mm:ss{cr}
<DEV/DAT_mm/dd/yy{cr}
<DEV/TPE_x{cr}
<DEV/TPS_xxx.xxx.xxx.xxx{cr}
<DEV/LRS_x{cr}
<DEV/MAC_ {cr}
<DEV/IPA_{cr}
<DEV/IPG_{cr}
<DEV/SPA_xxx{cr}
<DEV/SBR_xxxx{cr}
<DEV/CON_xx{cr}
<DEV/LCD_xx{cr}
<DEV/SSM_x{cr}
<DEV/SST_xx{cr}
<DEV/VFD_xxx{cr}
<DEV/SRO_xxx{cr}
<DEV/SSA_xxx{cr}
<DEV/RET_{cr}
<DEV/PNM_{cr}
<DEV/FRW_{cr}
<DEV/FRM_{cr}
<DEV/IMG_x{cr}
<DEV/AID_xxxxx...xxxxx{cr}
<DEV/FRB_YES{cr}
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
8.7.1.2
Sect.
8.7.3.1
8.7.3.2
8.7.3.3
8.7.3.4
8.7.3.5
8.7.3.6
8.7.3.7
8.7.3.8
8.7.3.9
8.7.3.10
8.7.3.11
8.7.3.12
8.7.1.3
Sect.
8.7.4.1
8.7.4.2
8.7.4.3
8.7.4.4
8.7.1.4
Sect.
8.7.5.1
8.7.5.2
8.7.5.3
8.7.5.4
8.7.5.5
8.7.5.6
8.7.5.7
8.7.5.8
8.7.5.9
8.7.5.10
MN/DT4500.IOM
Revision 2
Configuration Commands/Queries Quick Reference
Item
FRE
IFF
ATT
CLD
MUT
CMM
CRM
AFR
PGM
DPS
CLR
SEL
Description
Set Frequency
Set IF Frequency
Set Attenuation
Select Cold Start Mode
Mute/Unmute Converter
Configure Mute Mode
Set Redundant Mute Mode
Set Fault Recovery Mode
Set a Preset
Get All Presets
Clear a Preset
Select a Preset
Syntax
<DEV/FRE_xxxxx.xxx{cr}
<DEV/IFF_xxx{cr}
<DEV/ATT_xx.xx{cr}
<DEV/CLD_xxx{cr}
<DEV/MUT_xxx{cr}
<DEV/CMM_xxx{cr}
<DEV/CRM_xxx{cr}
<DEV/AFR_xxx{cr}
<DEV/PGM_nn_xxxxx.xxx_yy.yy{cr}
<DEV/DPS_{cr}
<DEV/CLR_nn{cr}
<DEV/SEL_nn{cr}
Redundancy Commands/Queries Quick Reference
Item
RED
ICT
SAM
FBU
Description
Set Redundancy Mode ON/OFF
Configure Redundant Converter
Select Auto/Manual Mode
Forced Backup Mode
Syntax
<DEV/RED_xxx{cr}
<DEV/ICT_xx_yy{cr}
<DEV/SAM_xx_y{cr}
<DEV/FBU_xx_y{cr}
Status Commands/Queries Quick Reference
Item
RCS
RMS
RUS
RAS
SAS
TSC
PACRCS
PACRMS
PACRUS
PACRAS
Description
Return Configuration Status
Return Maintenance Status
Return Utility Status
Return Alarm Status
Summary Alarm Status
Terminal Status Change
Packed Configuration Status
Packed Maintenance Status
Packed Utility Status
Packed Alarm Status
8–10
Syntax
<DEV/RCS_{cr}
<DEV/RMS_{cr}
<DEV/RUS_{cr}
<DEV/RAS_{cr}
<DEV/SAS_{cr}
<DEV/TSC_{cr}
<DEV/PACRCS_{cr}
<DEV/PACRMS_{cr}
<DEV/PACRUS_{cr}
<DEV/PACRAS_{cr}
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
8.7.1.5
Stored Alarm Queries Quick Reference
Sect.
8.7.6.1
8.7.6.2
8.7.6.3
8.7.2
MN/DT4500.IOM
Revision 2
Item
TSA
CAA
LAA
Description
Return Total Stored Alarms
Clear All Stored Alarms
List All Stored Alarms
Utility Commands/Queries
8.7.2.1
TIM (Time)
Use TIM to set or return the time.
Description
Set Time:
Details
<DEV/TIM_hh:mm:ss{cr} where:
hh=Hour
mm=Minutes
ss=Seconds
>DEV/TIM_hh:mm:ss{cr}{lf}]
<DEV/TIM_{cr}
>DEV/TIM_hh:mm:ss{cr}{lf}]
Confirmation:
Return Time:
Confirmation:
8.7.2.2
DAT (Date)
Use DAT to set or return the date.
Description
Set Date:
Confirmation:
Return Date:
Confirmation:
Details
<DEV/DAT_mm/dd/yy{cr} where:
mm=Month
dd=Day
yy=Year
>DEV/DAT_mm/dd/yy{cr}{lf}]
<DEV/DAT_{cr}
>DEV/DAT_mm/dd/yy{cr}{lf}]
8–11
Syntax
<DEV/TSA_{cr}
<DEV/CAA_YES{cr}
<DEV/LAA_{cr}
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
8.7.2.3
MN/DT4500.IOM
Revision 2
TPE (Time Protocol Enable)
Use TPE to set or return the Time Protocol.
Description
Set Time Protocol:
Confirmation:
Return TPE:
Confirmation:
8.7.2.4
Details
<DEV/TPE_x{cr} where:
x=0 Time protocol disabled
1 Time protocol enabled
>DEV/TPE_x{cr}{lf}]
<DEV/TPE_{cr}
>DEV/TPE_x{cr}{lf}]
TPS (Time Protocol Server)
Use TPS to set or return the Time Server IP address for the rear panel
'Ethernet’ M&C port.
Description
Set Time Protocol Server:
Confirmation:
Return TPS:
Confirmation:
8.7.2.5
Details
<DEV/TPS_xxx.xxx.xxx.xxx{cr} where:
xxx.xxx.xxx.xxx is the Time server IP address.
>DEV/TPS_xxx.xxx.xxx.xxx{cr}{lf}]
<DEV/TPS_{cr}
>DEV/TPS_xxx.xxx.xxx.xxx{cr}{lf}]
LRS (Local / Remote Status)
Use LRS to enable or disable remote communications interfaces. The factory
default setting is “3” (Ethernet+Serial remote control enabled).
Description
Set Local / Remote Status:
Description LRS:
Return LRS:
Confirmation:
Details
<DEV/LRS_x{cr} where:
x=0 LOCAL mode (front panel control only, remote control disabled)
1 Serial remote mode
2 Ethernet remote mode
3 Ethernet+Serial remote mode
>DEV/LRS_x{cr}{lf}]
<DEV/LRS_{cr}
>DEV/LRS_x{cr}{lf}]
8–12
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
8.7.2.6
MN/DT4500.IOM
Revision 2
MAC (Media Access Control Address)
Use MAC to return the unique MAC address of the rear panel ‘Ethernet’ M&C
port.
Description
Return MAC:
Confirmation:
8.7.2.7
Details
<DEV/MAC_{cr}
>DEV/MAC_xx-xx-xx-xx-xx-xx{cr}{lf}] where:
xx=MAC address byte in hexadecimal
IPA (IP Address)
Use IPA to set or return the Management IP Address and network prefix for the
rear panel ‘Ethernet’ M&C port. The factory default value is 192.168.1.4.24.
Description
Set IP Address:
Confirmation:
Return IP Address:
Confirmation:
8.7.2.8
Details
<DEV/IPA_aaa.bbb.ccc.ddd.yy{cr} where:
aaa = 0 to 223*
bbb = 0 to 255*
ccc = 0 to 255*
ddd = 0 to 255*
*Values cannot all be zeroes.
yy = Subnet Mask Length (8 to 30)
>DEV/IPA_ aaa.bbb.ccc.ddd.yy{cr}{lf}]
<DEV/IPA_{cr}
>DEV/IPA_ aaa.bbb.ccc.ddd.yy{cr}{lf}]
IPG (IP Gateway)
Use IPG to set or return the IP Gateway Address for the rear panel ‘Ethernet'
M&C port. The factory default value is 192.168.1.5.
Description
Set IP Gateway:
Confirmation:
Return IP Gateway:
Confirmation:
Details
<DEV/IPG_aaa.bbb.ccc.ddd{cr} where:
aaa = 0 to 223*
bbb = 0 to 255*
ccc = 0 to 255*
ddd = 0 to 255*
*Values cannot all be zeroes.
>DEV/IPG_ aaa.bbb.ccc.ddd{cr}{lf}]
<DEV/IPG_{cr}
>DEV/IPG_ aaa.bbb.ccc.ddd{cr}{lf}]
8–13
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
8.7.2.9
MN/DT4500.IOM
Revision 2
SPA (Set Physical Address)
Use SPA to set the physical address of the unit. The default address is 001.
Description
Set Physical Address:
Confirmation:
Return Physical Address:
Confirmation:
8.7.2.10
Details
<DEV/SPA_xxx{cr} where:
xxx = 1 to 255
>DEV/SPA_xxx{cr}{lf}]
<DEV/SPA_{cr}
>DEV/SPA_xxx{cr}{lf}]
SBR (Set Baud Rate)
Use SBR to set the serial interface baud rate. The default baud rate is 9600.
Description
Set Baud Rate:
Confirmation:
Return Baud Rate:
Confirmation:
8.7.2.11
Details
<DEV/SBR_xxxx{cr} where:
xxxx = 1200, 2400, 4800, 9600, 19K2, or 38K4
>DEV/SBR_xxxx{cr}{lf}]
<DEV/SBR_xxxx{cr}
>DEV/SBR_xxxx{cr}{lf}]
CON (Set LCD Contrast)
The CON legacy command does not control any current production unit
hardware. Its syntax is still supported to allow backwards compatibility with
initially released chassis monitor and control applications. The default LCD
contrast is 15.
Description
Set Contrast:
Confirmation:
Return Contrast:
Confirmation:
Details
<DEV/CON_xx{cr} where:
xx = 0 to 30
>DEV/CON_xx{cr}{lf}]
<DEV/CON_{cr}
>DEV/CON_xx{cr}{lf}]
8–14
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
8.7.2.12
MN/DT4500.IOM
Revision 2
LCD (Set LCD Brightness)
The LCD legacy command does not control any current production unit
hardware. Its syntax is still supported to allow backwards compatibility with
initially released chassis existing monitor and control applications. The default
LCD brightness is 15.
Description
Set Brightness
Confirmation:
Return Brightness:
Confirmation:
8.7.2.13
Details
<DEV/LCD_xx{cr} where:
xx = 0 to 30
>DEV/LCD_xx{cr}{lf}]
<DEV/LCD_{cr}
>DEV/LCD_xx{cr}{lf}]
SSM (Screen Saver Mode)
The SSM legacy command does not control any current production unit
hardware. Its syntax is still supported to allow backwards compatibility with
initially released chassis existing monitor and control applications. he default
screen saver mode is 0.
Description
Set SSM:
Confirmation:
Return SSM:
Confirmation:
8.7.2.14
Details
<DEV/SSM_x{cr} where:
x = 0 to 5
>DEV/SSM_x{cr}{lf}]
<DEV/SSM_{cr}
>DEV/SSM_x{cr}{lf}]
SST (Screen Saver Timeout)
The SST legacy command does not control any current production unit
hardware. Its syntax is still supported to allow backwards compatibility with
initially released chassis existing monitor and control applications. The default
screen saver timeout is 05.
Description
Set SST:
Confirmation:
Return SST:
Confirmation:
Details
<DEV/SST_xx{cr} xx = 00 to 99
>DEV/SST_xx{cr}{lf}]
<DEV/SST_{cr}
>DEV/SST_xx{cr}{lf}]
8–15
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
8.7.2.15
MN/DT4500.IOM
Revision 2
VFD (VFD Brightness)
Use VFD to set or return the front panel brightness from 0% to 100% in 25%
steps. The default VFD brightness is 100.
Description
Set VFD:
Details
<DEV/VFD_xxx{cr} where:
xx = 000 to 100 (in 025 steps)
>DEV/VFD_xxx{cr}{lf}]
<DEV/LCD_{cr}
>DEV/VFD_xxx{cr}{lf}]
Confirmation:
Return VFD:
Confirmation:
8.7.2.16
SRO (Set Reference Oscillator Tuning)
Use SRO to set or return the reference oscillator tuning. The default value is 087.
Description
Set Oscillator:
Details
<DEV/SRO_xxx{cr} where:
xxx = 0 to 255
>DEV/SRO_xxx{cr}{lf}]
<DEV/SRO_{cr}
>DEV/SRO_xxx{cr}{lf}]
Confirmation:
Return Tuning:
Confirmation:
8.7.2.17
SSA (Converter Slope Adjustment)
Use SSA to set or return the slope adjustment value. The default value is 0.3.
Description
Set Slope Adjust:
Confirmation:
Return Slope Adjust:
Confirmation:
Details
<DEV/SSA_xxx{cr} where:
xxx = 0.0 to 1.0
>DEV/SSA_xxx{cr}{lf}]
<DEV/SSA_{cr}
>DEV/SSA_xxx{cr}{lf}]
8–16
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
8.7.2.18
MN/DT4500.IOM
Revision 2
RET (Equipment Type)
Use RET to query the read-only model number and software revision of the unit.
Description
Return Equipment Type:
Confirmation:
8.7.2.19
Details
<DEV/RET_{cr}
>DEV/RET_xxxxxxxxxx yyyyyyy{cr}{lf}] where:
xxxxxxxxxx = Model Number
yyyyyyy = Software Version
PNM (Part Number)
Use PNM to query the unit’s read-only part number information.
Description
Return Part Number:
Confirmation:
8.7.2.20
Details
<DEV/PNM_{cr}
>DEV/PNM_xx…xx{cr}{lf}] where:
xx…xx = up to 96 bytes of part number information
FRW (Legacy Firmware Information)
The FRW legacy query no longer provides information about the unit’s firmware
type. It provide backwards compatibility with the initially released chassis
monitor and control software applications. Use FRM to query the current
production unit’s firmware information.
Description
Return Firmware Information:
Confirmation:
Details
<DEV/FRW_{cr}
>DEV/FRW_{cr}
BULK= FWnnnn-nr Ver=x.xx{cr}
M&C = FWnnnn-nr Ver=x.xx{cr}
FPGA= FWnnnn-nr Ver=x.xx{cr}{lf}]
where: nnnn-n firmware number
r
firmware revision letter
x.xx
firmware version number
Note: The BULK, M&C, and FPGA firmware have different numbers,
revisions, and versions.
8–17
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
8.7.2.21
MN/DT4500.IOM
Revision 2
FRM (Firmware Information)
Use FRM to query the firmware loaded in the current production unit. This
includes firmware numbers, versions, and release dates. This query replaces the
legacy FRW query.
Description
Return Firmware Information:
Confirmation:
8.7.2.22
Details
<DEV/FRM_{cr}
>DEV/FRM_{cr}
Boot: {cr}
FW-AAAAAAA B.B.BB DD/MM/YY{cr}
Bulk1: {cr}
FW-AAAAAAA B.B.BB DD/MM/YY{cr}
FW-AAAAAAA B.B.BB DD/MM/YY{cr}
FW-AAAAAAA B.B.BB DD/MM/YY{cr}
Bulk2: {cr}
FW-AAAAAAA B.B.BB DD/MM/YY{cr}
FW-AAAAAAA B.B.BB DD/MM/YY{cr}
FW-AAAAAAA B.B.BB DD/MM/YY{cr}{lf}]
where: FW-AAAAAAA = the firmware part number
B.B.BB = the version number
DD/MM/YY = Day/Month/Year firmware released
IMG (Firmware Image)
Use IMG to set or return selection of a valid bulk image as the next active boot
image.
Description
Set Next FW Image:
Confirmation:
Return Active FW Image:
Confirmation:
Details
<DEV/IMG_x{cr} where:
x = 1 or 2
>DEV/IMG_x{cr}{lf}]
<DEV/IMG_{cr}
>DEV/IMG_x{cr}{lf}]
8–18
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
8.7.2.23
MN/DT4500.IOM
Revision 2
AID (Application Identification)
Use AID to create a “free form” message. The intent is to identify the satellite,
transponder, beam, destination or other aspects of the application that may be
significant to operations.
The message length corresponds to capability of the display (LCD or VFD). The
message may be up to 48 characters in total. Blanks must be used after line 1
information in order to space to line 2 – the second line begins at character 25. A
carriage return ends the command. Trailing blanks will be generated to fill the
display field. The AID display will alternate with the Equipment type display by
use of the clear function key on the front panel. The default is "AID MESSAGE".
Description
Application ID:
Confirmation:
Return ID:
Confirmation:
8.7.2.24
Details
<DEV/AID_xxxxxxx ... xxxxx{cr} where:
xxxxxxx ... xxxxx = Your message, maximum 48 characters.
>DEV/AID_{cr}
xxxxxxxxxxxxxxxxxxxxxxxx{cr}
xxxxxxxxxxxxxxxxxxxxxxxx{cr}{lf}]
<DEV/AID_{cr}
>DEV/AID_{cr}
xxxxxxxxxxxxxxxxxxxxxxxx{cr}
xxxxxxxxxxxxxxxxxxxxxxxx{cr}{lf}]
FRB (Force Reboot)
Use FRB to force the unit to reboot after five seconds.
Description
Force Reboot:
Confirmation:
Details
<DEV/FRB_YES{cr}
>DEV/FRB_YES{cr}{lf}]
8–19
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
8.7.3
MN/DT4500.IOM
Revision 2
Configuration Commands / Queries
8.7.3.1
FRE (Frequency)
Use FRE to set or return the operating frequency. The default RF frequency of
the unit is equal to its minimum operating frequency (RFLOW).
Description
Set Frequency:
Confirmation:
Return Frequency:
Confirmation:
8.7.3.2
Details
<DEV/FRE_xxxxx.xxx{cr} where:
xxxx.xxx = Frequency in MHz (RFLOW to RFHIGH), in 125 kHz steps (1 kHz
steps optional)
EXAMPLE: 4500 to 4800 MHz for Model DT-4503/E (see Chapter 2.
SPECIFICATIONS for product-specific frequency ranges)
>DEV/FRE_xxxxx.xxx{cr}{lf}]
<DEV/FRE_{cr}
>DEV/FRE_xxxxx.xxx{cr}{lf}]
IFF (IF Frequency)
For units featuring the DUAL IF hardware option: Use IFF to switch the output IF
frequency from 70 MHz to 140 MHz, or from 140 MHz to 70 MHz.
Description
Set Frequency:
Confirmation:
Return Frequency:
Confirmation:
Details
<DEV/IFF_xxx{cr} where:
xxx = Frequency in MHz, either 140 or 70. No leading zero is required.
>DEV/IFF_xxx{cr}{lf}]
<DEV/IFF_{cr}
>DEV/IFF_xxx{cr}{lf}] where xxx = Frequency in MHz, either 140 or 70. No
leading zero is required.
1) The default selection is 70 MHz.
2) The actual IF bandwidth is maintained as the standard ±18 MHz
(±20 MHz) of the 70 MHz configurations.
3) The mute behavior after changing the IF frequency is the same as
the normal mute behavior after changing the RF frequency.
4) You may not “mix” dual IF converters with standard converters
when operating in a redundant system.
8–20
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
8.7.3.3
MN/DT4500.IOM
Revision 2
ATT (Attenuation)
Use ATT to set or return the attenuation value. The default value is 10.00 dB.
Description
Set Attenuation:
Confirmation:
Return Attenuation:
Confirmation:
8.7.3.4
Details
<DEV/ATT_ yy.yy{cr} where:
yy.yy = 00.00 to 25.00 dB in 0.25 dB steps (0.1 dB steps optional)
>DEV/ATT_yy.yy{cr}{lf}]
<DEV/ATT_{cr}
>DEV/ATT_ yy.yy{cr}{lf}]
CLD (Cold Start)
This command is NOT AVAILABLE in redundant systems.
Use CLD to mute the output signal for a predetermined time – 15 minutes –
following Power-Up to ensure a stable reference oscillator. The default is OFF.
Description
Set Cold Start:
Details
<DEV/CLD_xxx{cr} where:
xxx = ON or OFF
>DEV/CLD_xxx{cr}{lf}]
<DEV/CLD_{cr}
>DEV/CLD_xxx{cr}{lf}]
Confirmation:
Return Status:
Confirmation:
8.7.3.5
MUT (RF Mute)
Use MUT to set or return the RF mute state. The default is ON (output is muted).
Description
Mute Output:
Confirmation:
Return Mute Status:
Confirmation:
Details
<DEV/MUT_xxx{cr} where:
xxx = ON or OFF
>DEV/MUT_xxx{cr}{lf}]
<DEV/MUT_{cr}
>DEV/MUT_yyy{cr}{lf}]
yyy = ON/OFF/COLD
8–21
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
8.7.3.6
MN/DT4500.IOM
Revision 2
CMM (Configure Mute Mode)
Use CMM to set or return the mute state of the unit during frequency changes.
The default state is OFF (output is muted during frequency changes). When mute
mode is ON, the unit will retain its mute state upon changing RF frequency.
Description
Configure Mute Mode:
Confirmation:
Return CMM Status:
Confirmation:
8.7.3.7
Details
<DEV/CMM_xxx{cr} where:
xxx = ON or OFF
>DEV/CMM_xxx{cr}{lf}]
<DEV/CMM_{cr}
>DEV/CMM_xxx{cr}{lf}]
CRM (Redundancy Mute Mode)
Use CRM to set or return the redundancy mute mode. This function determines
how the backup unit handles the mute state during a redundant switchover
condition. If CRM=ON, the backup unit’s mute state is the same as that of the
primary unit that it is backing up. Otherwise, if CRM=OFF, the backup unit
unmutes its output any time a redundant switchover occurs. The default state is
OFF (backup unit’s output automatically unmutes when a redundant switchover
occurs).
Description
Set CRM:
Confirmation:
Return CRM:
Confirmation:
8.7.3.8
Details
<DEV/CRM_xxx{cr} where:
xxx = ON or OFF
>DEV/CRM_xxx{cr}{lf}]
<DEV/CRM_{cr}
>DEV/CRM_xxx{cr}{lf}]
AFR (Auto Fault Recovery)
Use AFR to automatically mute the converter output in the event of a detected
fault. AFR causes the output signal to go active (unmuted) if all faults clear. If you
disable AFR, the output remains muted even after all faults clear until a
MUT_OFF command is received. The default is ON.
If you enable AFR and the converter detects the same fault more than five times
in a five minute interval (e.g., multiple IFLO lock detect faults) the function
reverts to DISABLED and the converter remains muted.
8–22
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
Description
Set Fault Recovery:
Confirmation:
Return Status:
Confirmation:
8.7.3.9
MN/DT4500.IOM
Revision 2
Details
<DEV/AFR_xxx{cr} where:
xxx = ON or 0FF
>DEV/AFR_xxx{cr}{lf}]
<DEV/AFR_{cr}
>DEV/AFR_xxx{cr}{lf}]
PGM (Program Pre-select)
Use PGM to store up to 32 preset frequency and attenuation settings.
Description
Program Pre-select:
Confirmation:
8.7.3.10
Details
<DEV/PGM_nn_xxxxx.xxx_yy.yy{cr} where:
nn = Preset Number = 01 to 32.
xxxx.xxx = Frequency in MHz (RFLOW to RFHIGH) in 125 kHz steps (1 kHz
steps optional)
EXAMPLE: 4500 to 4800 MHz for Model DT-4503/E (see Chapter 2.
SPECIFICATIONS for product-specific frequency ranges)
yy.yy = Attenuation value in dB from 00.00 to 25.00 in 0.25 dB step sizes (0.1
dB step size optional).
>DEV/PGM_nn_xxxxx.xxx_yy.yy{cr}{lf}]
DPS (Display All Pre-selects)
Use DPS to return all 32 of the programmed pre-select values.
Description
Display Pre-selects:
Confirmation:
Details
<DEV/DPS_{cr}
>DEV/DPS_{cr}
P01 xxxxx.xxx yy.yy{cr}
to
P32 xxxxx.xxx yy.yy{cr}{lf}] where:
xxxxx.xxx = Frequency in MHz
yy.yy
= Attenuation in dB
Note: Only programmed pre-select numbers are returned. If no pre-select(s)
is programmed, “No Pre-Selects Programmed” is returned.
8–23
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
8.7.3.11
MN/DT4500.IOM
Revision 2
CLR (Clear Pre-select Configuration)
Use CLR to clear a single pre-select value.
Description
Clear a Preset:
Details
<DEV/CLR_nn{cr} where:
nn = Pre-select Number (01 to 32)
>DEV/CLR_nn_Cleared{cr}{lf}]
Confirmation:
8.7.3.12
SEL (Select Pre-select Configuration)
Use SEL to load a pre-select number configuration.
Description
Select Pre-select:
Confirmation:
8.7.4
Details
<DEV/SEL_nn{cr} where:
nn = Pre-select Number (01 to 32)
NOTE: Only programmed pre-select numbers are available.
>DEV/SEL_nn_Selected{cr}{lf}]
Operating Modes
There are two modes of operation that may intersect: Redundant Mode and
Automatic Mode.
8.7.4.1
RED (Redundant Mode)
Each converter, including the backup converter, must be active in the Redundant
Mode. The default mode is OFF.
Description
Redundant Mode:
Confirmation:
Redundant Status:
Confirmation:
Details
<DEV/RED_xxx{cr} where:
xxx = ON or OFF
>DEV/RED_xxx{cr}{lf}]
<DEV/RED_{cr}
>DEV/RED_xxx{cr}{lf}]
1) The primary units must all be configured properly in redundant
mode before you can enable redundant mode on the backup unit.
2) Polling on the high speed bus will not begin until the position
assignments are made.
8–24
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
8.7.4.2
MN/DT4500.IOM
Revision 2
ICT (Initialize Chain Command)
Use ICT to initialize each converter's chain position, including the backup
converter. This command is allowed only when you are active in Redundancy
Mode.
Description
Initialize Chain Description:
Confirmation:
Initialize Status:
Confirmation:
Details
<DEV/ICT_xx_yy{cr}
>DEV/ICT_xx_yy{cr}{lf}]
<DEV/ICT_{cr}
>DEV/ICT_xx_yy{cr}{lf}] where:
xx = chain position = 01 to 12, or BU. Where BU selects the converter as
the backup.
yy = chain length for xx = BU (i.e. Backup converter) 01 to 12.
yy = unused if xx = 01 to 12 (i.e. chain converter)
EXAMPLE 1: <DEV/ICT_01{cr}
>DEV/ICT_01{cr}{lf}]
(Description assigns the converter chain position "1")
EXAMPLE 2: <DEV/ICT_BU_08{cr}
>DEV/ICT_BU_08{cr}{lf}]
(Description assigns the receiving converter as the backup converter in
a 1:8 system.)
IMPORTANT! It should be reiterated that only the converter physically
located at the top of a redundant rack should be assigned as the
Backup unit (BU).
Likewise, assignment of chain positions in a redundant rack should be
made according to the physical allocation of each converter in the rack
(i.e., the top converter should be the Backup Unit; the second
converter should be assigned chain position 1, the third converter
position 2, etc.).
8.7.4.3
SAM (Switching Automatic/Manual Mode)
Use SAM to set the switching mode for the backup converter if both units are in
Redundancy Mode. This command is only accepted by the backup converter. If a
chain converter is set in Manual Mode, the backup converter will log the
occurrence and not act upon further information from the converter until put
into Automatic Mode. The default is off.
8–25
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
Description
Switching Mode:
Confirmation:
Automatic Status:
Confirmation:
8.7.4.4
MN/DT4500.IOM
Revision 2
Details
<DEV/SAM_xx_y{cr}
>DEV/SAM_xx_y{cr}{lf}]
<DEV/SAM_xx_{cr}
>DEV/SAM_xx_y{cr}{lf}] where:
xx = converter number 01 to 12
y = A for Auto; M for Manual
FBU (Force Backup)
Use FBU to force a backup condition for maintenance and test purposes. This
command is only accepted by the backup converter (i.e., “BU”). When activated,
this command forces the chain converter offline, and forces the backup
converter to assume the state of the specified chain converter.
Description
Force a Backup:
Confirmation:
Return Backup Status:
Confirmation:
Details
<DEV/FBU_xx_y{cr}
>DEV/FBU_xx_y{cr}{lf}] where:
xx = converter number 01 to 12
y = ‘F’ to force a backup, ‘N’ to remove a backup
<DEV/FBU_{cr}
>DEV/FBU_xx_zzzzz{cr}{lf}] where:
xx = converter number 01 to 12
zzzzz = ‘NONE’ if no backup active (converter number is not displayed);
‘ACTIVE’ if an automatic backup has occurred;
‘FORCED’ if a forced backup is active
8–26
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
8.7.5
MN/DT4500.IOM
Revision 2
Status Queries
Status queries retrieve configuration, maintenance and alarm status in summary
form.
8.7.5.1
RCS (Configuration Status)
Description
Configuration Status:
Confirmation:
Details
<DEV/RCS_{cr}
>DEV/RCS_{cr}
FRE_xxxxx.xxx{cr}
ATT_yy.yy{cr}
TX_nnn{cr}
ONL_nnn{cr}
RED_xx_yy_z{cr}
CLD_nnn{cr}
AFR_nnn{cr}
EXT_xxx{cr}{lf}]
Frequency
Attenuation
Transmitter: ON/OFF/COLD
Online: ON/OFF
See Note
Cold Start: ON/OFF
Auto Flt Recovery: ON/OFF
Ext. Ref.: YES/NO
If Redundancy=OFF, then xx_yy_z = OFF; otherwise, if Redundancy=ON
and you select a converter as a backup controller: xx_yy_z = BU_yy,
where yy is the number of converters in the chain (i.e. 01 to 12).
Alternately, if Redundancy=ON and you select a converter as a chain
unit, where xx is the converter number (01 to 12), and z = A (if Auto
Mode) or M (if Manual Mode).
8.7.5.2
RMS (Maintenance Status)
Description
Maintenance Status:
Confirmation:
Details
<DEV/RMS_{cr}
>DEV/RMS_{cr}
P15_xx.x{cr}
P14_xx.x{cr}
VCC_x.x{cr}
5VD_x.x{cr}
TEM_xx{cr}
IFL_xx.x{cr}
SUM_xx.x{cr}
COR_xx.x{cr}
FIN_xx.x{cr}{lf}]
15V DC Supply
14V DC Supply
VCC Supply
Display 5V DC
Temperature
IFLO Tuning
Sum Loop Tuning
Coarse Loop Tune
Fine Loop Tuning
8–27
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
8.7.5.3
MN/DT4500.IOM
Revision 2
RUS (Utility Status)
Description
Utility Status:
Confirmation:
8.7.5.4
Details
<DEV/RUS_{cr}
>DEV/RUS_{cr}
COMM_aaaaaa{cr} RS-232 or RS-485
ADD_xxx{cr}
Address (001 to 255)
BR_nnnn{cr}
Baud Rate (1200, 2400, 4800, 9600, 19K2, or 38K4)
FMT_x-y-z{cr}
Data Format x=data, y=parity, z=stop bit (8-N-1, 7-E-2, 7-O-2)
REF_xxx{cr}
Osc. Adjust (000 to 255)
SLP_x.x{cr}
Slope Adjust (0.0 to 1.0)
CON_xx{cr}
LCD Contrast (0 to 30)
LCD_xx{cr}{lf}]
LCD Brightness (0 to 30).
RAS (Alarm Status)
Description
Alarm Status:
Confirmation:
Details
<DEV/RAS_{cr}
>DEV/RAS_{cr} where:
xx = OK or FT
P15_xx{cr}
15V DC Fault
P14_xx{cr}
14V DC Fault
VCC_xx{cr}
VCC Fault
5VD_xx{cr}
5VD Fault
TEM_xx{cr}
Temperature Fault
IFL_xx{cr}
IFLO Lock Fault
SUM_xx{cr}
Sum Lock Fault
COR_xx{cr}
Coarse Lock Fault
FIN_xx{cr}
Fine lock Fault
HSB_xx{cr}
High Speed Bus Fault
REF_xx{cr}{lf}]
Ref. Lock Fault (See Note)
The unit returns REF_xx only when an external reference is present.
8.7.5.5
SAS (Summary Alarm Status)
Summary alarm is set to Fault (FT) if any of the RAS Alarm Status items (Sect.
8.7.4.4) are faulted.
Description
Summary Alarm:
Confirmation:
Details
<DEV/SAS_{cr}
>DEV/SAS_xx{cr}{lf}] where:
xx = OK or FT
8–28
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
8.7.5.6
MN/DT4500.IOM
Revision 2
TSC (Terminal Status Change)
Use the TSC query to determine if the status of the terminal has changed since it
was last polled. If any of the parameters listed in the RCS or RUS queries have
changed as a result of user front panel operations or remote operations, or if any
new fault conditions occur, the TSC command returns YES. The TSC query then
continues to return YES until any of the following queries are received: RCS, RUS,
RAS, PACRCS, PACRUS, or PACRAS.
Description
Configuration Status:
Confirmation:
8.7.5.7
Details
<DEV/TSC_{cr}
>DEV/TSC_nnn{cr}{lf}] where:
nnn=YES/NO
PACRCS (Packed Configuration Status)
Description
Configuration Status:
Confirmation:
Details
<DEV/PACRCS_{cr}
>DEV/PACRCS_aaaaaaabbbcdeffgghijkl{cr}{lf}] where:
aaaaa or aaaaaa = # of steps above base frequency1
bbb
= # of 0.25 dB steps above 0.00 dB2
c
= 1 if Transmitter ON, 0 if OFF, 2 if Cold
d
= 1 if unit ONLINE, 0 if OFFLINE
e
= 1 if Redundancy ON, else 0
ff
= converter # (01-12, BU or 00 if e = 0)
gg
= 00 if 'ff' is 00 (redundancy OFF)
g
= chain length (01-12) if 'ff' is BU
gg
= XX if 'ff' = 01 - 12
h
= A if Auto Mode, M if Manual3
I
= 1 if Cold Start Enabled, else 0
j
= 1 if Auto recovery enabled, else 0
k
= 1 if an Ext. Ref is present, else 0
l
= 1 if Remote Mode, 0 if Local Mode
8–29
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
MN/DT4500.IOM
Revision 2
PACRCS NOTES:
1) If frequency selection is optional 1 kHz step size, the number of 1
kHz steps above the base frequency is 7 bytes in length (aaaaaaa).
For DT-4513X converters with 125 kHz frequency step size, the
number of 125 kHz steps above the base frequency is 5 bytes in
length (aaaaa).
2) If the attenuation is optional 0.1 dB step size, this is the number of
0.1 dB steps above the base frequency
3) If the converter is a backup converter, it is always ‘A’.
4) If the converter is the primary converter, gg=P1 or P2 (single or
dual polarity system).
8.7.5.8
PACRMS (Packed Maintenance Status)
Description
Maintenance Status:
Confirmation:
8.7.5.9
Description
Alarm Status:
Confirmation:
Details
<DEV/PACRMS_{cr}
>DEV/PACRMS_aabbccddeeeffgghhii{cr}{lf}] where:
aa
= V15 scaled 123mV per count (0x00 - 0xFF)
bb
= V14 scaled 123mV per count (0x00 - 0xFF)
bc
= VCC scaled 39mV per count (0x00 - 0xFF)
dd
= V5D scaled 39mV per count (0x00 - 0xFF)
eee
= signed Temperature in degrees C (-10 to +60)
ff
= IFLO tune scaled 67mV per count (0x00 - 0xFF)
gg
= SUM tune scaled 54mV per count (0x00 - 0xFF)
hh
= COARSE tune scaled 78mV per count (0x00 - 0xFF)
ii
= FINE tune scaled 89mV per count (0x00 - 0xFF)
l
= 1 if Remote Mode, 0 if Local Mode
PACRAS (Packed Alarm Status)
Details
<DEV/PACRAS_{cr}
>DEV/PACRAS_abcdefghijk{cr}{lf}] where:
a
= 1 if V15 Fault, else 0 if No Fault
b
= 1 if V14 Fault, else 0 if No Fault
c
= 1 if VCC Fault, else 0 if No Fault
d
= 1 if V5D Fault, else 0 if No Fault
e
= 1 if TEMP Fault, else 0 if No Fault
f
= 1 if IFLO Fault, else 0 if No Fault
g
= 1 if SUM Fault, else 0 if No Fault
h
= 1 if COARSE Fault, else 0 if No Fault
I
= 1 if FINE Fault, else 0 if No Fault
j
= 1 if HSB Fault, else 0 if No Fault
8–30
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
k
8.7.5.10
Description
Utility Status:
Confirmation:
= 1 if EXT REF Fault, else 0 if No Fault
PACRUS (Packed Utility Status)
Details
<DEV/PACRUS_{cr}
>DEV/PACRUS_ abbcdeeffghhii{cr}{lf}] where:
a
= 0=EIA-232, 1=EIA-485
bb
= Address in hex (01 to FF)
c
= 0 if Baud Rate 38400
= 1 if Baud rate 19200
= 2 if Baud rate 9600
= 3 if Baud rate 4800
= 4 if Baud rate 2400
= 5 if Baud rate 1200
d
= 0 if Data Format 8-N-1
= 1 if Data Format 7-E-2
= 2 if Data Format 7-O-2
ee
= Osc. Adjust in hex (00 to FF)
ff
= Slope Adjust times by 10 (00 to 10)
g
= Always 0, unused
hh
= LCD Contrast (0 to 30)
ii
= LCD Brightness (0 to 30
8–31
MN/DT4500.IOM
Revision 2
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
8.7.6
MN/DT4500.IOM
Revision 2
Stored Alarms
Up to 100 alarms are date- and time-stamped and stored in memory as they
occur. The alarm entry is also updated with its date/time of clearance. The entry
remains in memory until it is cleared by the CAS command.
8.7.6.1
TSA (Total Stored Alarms)
Use TSA to retrieve the total number of stored alarms and the time and date of
the most recent alarm.
Description
Retrieve Total Alarms:
Confirmation:
8.7.6.2
CAS (Clear All Stored Alarms)
Description
Clear All Alarms:
Confirmation:
8.7.6.3
Details
<DEV/TSA_{cr}
>DEV/TSA_TOTAL:nn{cr}
LAST:hh:mm:ss mm/dd/yy{cr}{lf}] where:
nn = 0 to 99; the 100th alarm will be ER
hh.mm.ss = time in hour:minutes:seconds
mm/dd/yy = date in month/day/year
Details
<DEV/CAA_YES{cr}
>DEV/CAA_CLEARED{cr}{lf}]
LAA (List All Alarms)
Use LAA to retrieve a list of the stored alarms. This query is unavailable when
using virtual addressing mode.
Description
List All Alarms:
Confirmation:
Details
<DEV/LAA_{cr}
>DEV/LAA_{cr}
xx yyyyyyyyyyy hh:mm:ss mm/dd/yy{cr}
"
"
"
"
xxx yyyyyyyyyyy hh:mm:ss mm/dd/yy{cr}{lf}] where:
xx
= stored fault number
yyyyyyyyyyy
= fault description
hh:mm:ss = fault time
mm/dd/yy = fault date
8–32
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
MN/DT4500.IOM
Revision 2
8.8 Error Processing
8.8.1.1
General Errors
Any command or query may generate the following Error Responses instead of a
confirmation:
>DEV?COM CU CMD UNRECOGNIZED{cr}{lf}]
>DEV?COM IP INVALID PARAM{cr}{lf}]
>DEV?COM PE PARITY ERROR{cr}{lf}]
8.8.1.2
Configuration Errors
A Configuration command may generate the following Error Response:
>DEV?COM LO DEVICE IN LOCAL MODE{cr}{lf}]
8.8.1.3
Mode Errors
A Mode selection may generate the following Error Responses:
>DEV?COM AE ONLY VALID WHEN BACKUP{cr}{lf}]
>DEV?COM OE OFFLINE NOT AVAILABLE{cr}{lf}]
>DEV?COM CN COMMAND NOT AVAILABLE{cr}{lf}]
8.8.1.4
Time-Outs
The station M&C computer should attempt to execute any instruction at least
three times. The system assumes a time-out if there is no response within 500
milliseconds.
8–33
DT-4500 Series C- and Ku-Band Down Converters
Serial Interface Operation
Notes:
8–34
MN/DT4500.IOM
Revision 2
Appendix A. REDUNDANT
SYSTEM OPERATION
A.1 Redundancy Overview
Use of the word “converter” throughout this appendix applies to either
the Comtech EF Data DT-4500 Series C- or Ku-Band Down Converter or
the UT-4500 Series C- or Ku-Band Up Converter.
Comtech EF Data’s DT-4500 Series C- and Ku-Band Down Converters function in a
redundant system using distributed protection switching in an active "Daisy
Chain" configuration. This proprietary configuration distributes the converter
protection switching functions in the converters. This provides a system
capability to back up from 1 to 12 online converters.
A High Speed Bus (HSB) provides the communications interface between the
backup and online converters. The HSB detects faults and reconfigures the
subsystem to replace the failed converter. When a faulted converter is removed
from active operation, it detaches from the active converter chain by separating
the converter from its switch module. This leaves the active online converter
chain intact via the switch module. You can expand the chain without affecting
online converter operation.
You may also indirectly control the active chained converters in a redundancy
subsystem through the backup converter (BU) via the remote serial
communication link – see Chapter 8. SERIAL INTERFACE OPERATION for more
information.
A–1
DT-4500 Series C- and Ku-Band Down Converters
Appendix A
MN/DT4500.IOM
Revision 2
A.2 Backup Converter (BU)
The "Daisy Chain" terminates in the BU. The BU has a microprocessor that
performs fault detection, self-reconfiguration, and the logical switching
functions. If the BU does not have a fault, it assumes the frequency and
attenuation of the faulted converter and compensates for the chain loss. The BU
accomplishes this via operation of the HSB and the online converter’s removable
switch module.
A.2.1
High Speed Bus (HSB)
In the "Daisy Chain" configuration, the BU communicates with the online units
through the High Speed Bus interface (HSB). This allows the BU to detect faults
and reconfigure itself to replace the faulted converter. The BU also uses the HSB
to monitor configuration changes made to an online converter. Changes in
frequency, gain, or polarity – as well as information from new online units – are
immediately entered into the backup table. The HSB does not interfere with the
remote serial communication link access to any of the converters in the chain.
A.2.2
Removable “Personality” Modules
See Chapter 2. SPECIFICATIONS or contact Comtech EF Data Product
support for the listing of modules available to both the DT-4500 Series
Down Converters and the UT-4500 Series Up Converters.
Depending on the application, the converter chassis rear panel module slot
accepts an Input/Output Module (IOM), Polarity Switch Module (PSM), Transmit
Switch Module (TSM), Equalizer Module (EQM), or Receive Switch Module (RSM).
The converter RF, IF, and High-Speed Bus (HSB) connectors are integral to the
installed module.
The converter employs an IOM for non-redundant (also called standalone or
single thread) operation. The IOM is also used for unit testing.
A.2.2.1 Converter Switching
In redundancy applications where converters are "Daisy Chained" to provide
distributed online protection switching to a BU, an RSM is used in place of an
IOM. The RSM contains IF switches for input/output looping of the signal.
A–2
DT-4500 Series C- and Ku-Band Down Converters
Appendix A
MN/DT4500.IOM
Revision 2
Options for the RSM include Type ‘SMA’ female connectors for the RF Input
signal, and 50Ω or 75Ω BNC female connectors for the IF output.
The "Daisy Chain" configuration is designed to chain the IF output of up to twelve
(12) online converters through RSMs terminating in a BU. When a fault occurs in
an online converter, the system commands the RSM in the faulted converter to
switch to the BU.
A.3 Redundant Configurations
You may configure the DT-4500 in a variety of subsystem "Daisy Chain"
configurations to suit the reliability requirements of your communication
system. These configurations include 1:1 or 1:N Redundant Systems.
A.3.1
1:1 Redundant Systems
A 1:1 Redundant System can be either a Single Source or a Dual Source IF Output
Configuration.
In a Single Source IF Output Configuration: Figure A-1 shows the cable
connections between the converters. Figure A-2 shows the diagram for this 1:1
redundant converter configuration.
The online converter uses an IF transfer switch to switch the IF signal. A single
switched IF output is provided to and from the online converter. The transfer
switches are contained in the RSM installed in the online converter. When a fault
occurs in the online converter, the RSM is de-activated to switch out the online
converter, and switch the IF output to the BU.
In a Dual Source IF Output Configuration: Figure A-5 shows the cable
connections between the converters. Figure A-6 shows the diagram for the 1:1
redundant/dual source RF input/converter configuration.
Two IF outputs – IF Output #1 (priority) and IF Output #2 – are switched in the
RSM to provide redundant operation of the converters. The converters provide
two switched IF outputs – IF Output #1 (priority) and IF Output #2. If Converter
#01 faults, Converter #02 backs up the priority channel and IF Signal #2 is not
operational.
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Figure A-1. 1:1 Redundant Configuration –Single Source IF Output (with
IOM and RSM)
Figure A-2. 1:1 Redundant Configuration Diagram – Single Source IF
Output (with IOM and RSM)
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Figure A-3. 1:1 Redundant Configuration Diagram – Single Source RF Input
(with IOM and EQM)
Figure A-4. EQM Panel – Connector Locations
Figure A-5. 1:1 Redundant Configuration – Dual Source IF Output
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Figure A-6. 1:1 Redundant Configuration Diagram – Dual Source IF Output
(with IOM and RSM)
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1:N Redundant Systems
The RSM contains an IF switch that switches the IF output of a faulted online
converter to the BU. Figure A-7 shows the cable connections between the
converters. Figure A-8 shows the diagram for this 1:N redundant "Daisy Chain"
converter configuration.
Figure A-7. Dual Source 1:N Redundant Configuration (with PSM and RSM)
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Figure A-8. Dual Source 1:N Redundant Configuration Diagram (with PSM
and RSM)
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A.4 Redundant System Configuration
A.4.1
Redundant System Configuration Using the Front
Panel
Chapter 6. FRONT PANEL OPERATION
A.4.1.1 Initial Configuration
Use the DT-4500 front panel CONFIGREDUNDANCY menu branch to configure
your redundant system. Assign a redundancy configuration address (01 to 12) to
each online unit. Make sure that you assign the online converter address relative
to its proximity to the backup unit (BU); i.e., the unit closest to the BU must be
Converter #01, the next unit down must be Converter #02, etc. Figure A-9 shows
the proper address assignments for a 1:3 system (chain).
Figure A-9. Front Panel Example – 1:3 System Configuration
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Configure the online units first, and then configure the backup unit. Redundant
polling starts once you configure the backup. If this polling starts before you
configure the online units, this results in an HSB fault. This fault should clear
once you complete configuration. At this point, the BU will control the
redundant system.
In a single polarity system, set “POL=1” on all online units. In a dual polarity
system where the BU has a Polarity Switch Module (PSM) installed, configure
each unit to represent the RF feed as it is connected to “POL=1” or “POL=2”. See
Figure A-7.
A.4.1.2 Automatic Configuration Verification
Use the DT-4500 front panel CONFIG FAULTRECOVERY menu branch to select
fault recovery operation as Auto. In AUTO mode, failure of an online converter
automatically causes switchover to the BU. The easiest way for you to test AUTO
mode in the field is to turn off an online unit. The online units report their status
as shown in Figure A-10. The BU VFD displays each installed unit as “A” or “M”.
This example shows the entire 1:3 chain configured for AUTOMATIC operation.
Figure A-10. Front Panel Example – System in AUTO Redundancy Mode
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Figure A-11 shows the front panel displays after power has been turned off on
Converter #01. Note the ON LINE LED is lit on the BU. This indicates that the BU
is now providing the frequency translation in place of the faulted unit. Converter
#01 will not come back online until power is restored.
Figure A-11. Front Panel Example – Down Converter #01 Backup
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A.4.1.3 Manual Configuration and Verification
Use the DT-4500 front panel CONFIG FAULTRECOVERY menu branch to select
fault recovery operation as Manual. In MANUAL mode, the BU can force
switchover of an online unit. This mode also overrides fault status detection of
the online units as performed by the BU. If an online unit is configured to manual
mode and this unit faults, no switchover occurs. The online units report their
status as shown in Figure A-12. The active configuration BU displays each
installed unit as “A” or “M”. This example shows Converter #01 configured for
MANUAL (M) operation.
Figure A-12. Front Panel Example – Down Converter #01=MAN,
Others=AUTO
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Figure A-13 shows the front panel displays after the BU forces Converter #01
offline. Note the ON LINE LED allows you to tell whether the BU is currently
active and which converter is being bypassed.
Figure A-13. Front Panel Example – Down Converter #01 Forced Backup
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Redundant System Configuration Using the
DT-4500 HTTP Interface
Chapter 7. ETHERNET INTERFACE OPERATION
You may use the DT-4500 HTTP Interface to configure and monitor redundancy
operations. Log onto the HTTP Interface. Click the Config navigation tab, and
then select the Redundancy hyperlink.
Figure A-14. ‘Config | Redundancy’ Page
Click [Refresh] to update the page with its latest operating parameters.
Online Status
This read-only section identifies the unit’s status as ONLINE or OFFLINE.
Redundancy Mode
Use the drop-down list to select Redundancy Mode as OFF or ON. Click [Change].
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Chain Position
Use the drop-down list to assign the unit’s Chain Position as the Backup Unit, or
Unit 01 through Unit 12.
Chain Length (Backup Unit) – Use the drop-down list to select N/A, or 1:1
through 1:12.
Polarity (Primary Down Converter) – Use the drop-down list to select N/A,
Single, or Dual.
Click [Change] to continue.
Forced Backup
Use the drop-down list to set the Forced Backup as NONE, or Unit 01 through
Unit 12. Click [Change].
Redundancy Mute Mode
Use the drop-down list to set the Redundancy Mute Mode as OFF or ON. Click
[Change].
Primary Unit Status
This section is populated on a per-unit basis as the “Daisy Chain” is configured.
Information is provided for each unit’s Online Status (Online or Offline),
Operating RF Frequency, Attenuation, Mute status, and Polarity.
Additionally:
Auto Mode – Use the drop-down list to select a unit’s switching mode as Manual
or Automatic.
Offset – Enter an offset adjustment value here. See Sect. A.4.3 for further
instructions.
Click [Change] to save.
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Offset Adjustment
Use the offset to compensate for cable and switch losses. When you initially set
up and test the system, you must force each converter to backup, and adjust the
offset to minimize gain mismatch between the normal and bypassed mode. This
offset will be different for each converter and is stored in a table in the backup
unit.
Do these steps to configure the offset adjustment:
1. Connect a signal source to the input and a power meter or spectrum
analyzer to the output of the first online converter.
2. Record the output power.
3. Force a backup of the first online unit.
4. Adjust the offset until the output power matches what was recorded in
Step 2.
5. Restore the online unit, and then repeat these steps for the other online
units.
A.5 Redundancy Systems – Converter Management
See Appendix B. MAINTENANCE AND TROUBLESHOOTING for
information about managing the backup and inline converters that
comprise your redundancy system.
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Appendix B. MAINTENANCE
AND TROUBLESHOOTING
B.1 Overview
This appendix serves to assist operator and maintenance personnel in the
checkout, maintenance, and troubleshooting of the DT-4500 Series C- or Ku-Band
Down Converters. Troubleshooting procedures are provided for fault isolation to
the switch module level.
Figure B-1. DT-4500 Signal and Interconnecting Diagram – 1:N Redundancy
“Inline” Unit Example (with RSM)
Figure B-1 shows an example of the DT-4500 rear panel input and output signal
routing, cabling interconnections, and switch module location.
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B.2 Maintenance Testing
The DT-4500 is a down converter. It converts the input RF frequency to an output
IF frequency. The RF input level is -45 dBm (typical), and the RF output level is 0
dBm (typical).
(TOP) Initially Released Chassis
(BOTTOM) Current Production Unit
Figure B-2. DT-4500 Front Panel (DT-4503 Shown)
Figure B-2 identifies the DT-4500 front panel features:
• Item 1 – Rack handles. See Chapter 3. INSTALLATION AND STARTUP to
review the installation information and to prepare for checkout.
• Item 2 – Sample Test Points. See Sect. B.2.1 for details.
• Front panel operations – See Chapter 6. FRONT PANEL OPERATION for
details about using the LEDs (Item 3), VFD (Item 4) and its menu system,
and the keypad (Item 5).
B.2.1
Sample Test Points
Use these test point connections to monitor the RF input and the IF output:
• The ‘RF’ Type ‘SMA’ female connector provides the RF input. An optional
RF LO monitor is available that replaces this RF monitor connection.
• The ‘IF’ BNC female connector provides the IF output.
B.2.2
Troubleshooting
When a fault condition is indicated or a marginal performance tolerance
condition exists, you may use the front panel LEDs and VFD to identify the
specific faults and events:
• The LED status indicators alert you to operating problems.
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You may use the VFD to view stored events and faults. See Sect. 6.2.5
(SELECT:) FAULTS Menu Branch for information about viewing and
managing the stored events log.
See Sect. 6.2.4 (SELECT:)MONITOR Menu Branch for information about
viewing the unit’s operational status screens.
Down Converter Faults
B.2.3.1 Prime Power
Check the dual fuses on the rear panel. The required prime power is 90-250VAC
@ 1 Amp. The optional DC prime power is -48VDC.
B.2.3.2 DC Power Supply Module
15VDC: A fault ("FT") indicates a voltage level exceeding ± 10% of the power
supply voltage. Check the output of the DC Power Supply Module. The typical
current output level is 3.0 amps. Check all connections to make sure they are
secure. If the voltage exceeds ± 10%, or the power supply module current is not
approximately 3.0 amps, or the fault still exists, remove the power supply and
return it to Comtech EF Data for repair.
14VDC: A fault ("FT") indicates a voltage level exceeding ± 10% of the power
supply voltage. The 14VDC is developed in the modules. Check the output of the
15VDC Power Supply Module, check for other module faults, and check all
connections. If the fault still exists, remove the converter and return it to
Comtech EF Data for repair.
VCC (+5VDC): A fault ("FT") indicates a voltage level exceeding ± 10% of the
power supply voltage. The 5VDC is developed in the modules. Check the output
of the 15VDC Power Supply Module, check for other module faults, and check all
connections. If the fault still exists, remove the converter and return it to
Comtech EF Data for repair.
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B.2.3.3 RF Converter Module
IFLO Lock Detect: A fault (“FT”) indicates that the IFLO is not locked. Check all
connections to the converter module to make sure they are secure. If the fault still
exists, remove the module and return it to Comtech EF Data for repair.
B.2.3.4 Synthesizer Sum Loop Module
Sum Loop Detect: A fault (“FT”) indicates that the sum loop is not locked. Check
all connections to the converter module to make sure they are secure. If the fault
still exists, remove the Sum Loop Module and return it to Comtech EF Data for
repair.
B.2.3.5 Synthesizer Fine Step Module
Coarse Loop Detect: A fault (“FT”) indicates that the coarse loop is not locked.
Check all connections to the converter module to make sure they are secure. If the
fault still exists, remove the Fine Step Module and return it to Comtech EF Data for
repair.
Fine Loop Detect: A fault (“FT”) indicates that the fine loop is not locked. Check all
connections to the converter module to make sure they are secure. If the fault still
exists, remove the Fine Step Module and return it to Comtech EF Data for repair.
B.2.3.6 Reference Oscillator Module
Reference Lock Detect: A fault ("FT") indicates that the reference oscillator
detected an external reference, but could not lock to it. Disconnect the external
reference. If the fault still exists, remove the Reference Module and return it to
Comtech EF Data for repair.
B.2.3.7 Temperature Fault
Converter Over Temperature Fault: A fault ("FT") indicates that the converter is
over temperature. Turn the prime power switch off and return the converter to
Comtech EF Data for repair.
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Removable “Personality” Modules
See Chapter 2. SPECIFICATIONS or contact Comtech EF Data Product
Support for information about the module(s) specific to your system.
Depending on the application, the rear panel module slot accepts an
Input/Output Module (IOM), Polarity Switch Module (PSM), Transmit Switch
Module (TSM), Equalizer Module (EQM), or Receive Switch Module (RSM). The
converter RF, IF, and High-Speed Bus (HSB) connectors are integral to the
installed module. These “personality” modules (Figure B-3) are available for both
non-redundant (also referred to as single thread or standalone) and redundant
applications.
(TOP) Input/Output Switch Module (IOM)
(CENTER) Receive Switch Module (RSM)
(BOTTOM) Transmit Switch Module (TSM)
Figure B-3. “Personality” Module Examples
When you install a removable module into the rear panel module slot,
DO NOT use a screwdriver to tighten the module mounting thumbscrews
– these screws are designed to be hand-tightened only.
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B.3 Spares
Comtech EF Data recommends that you have spare replacement converters on
hand at the RF converter level to replace any converter(s) removed from the
system for any reason.
If sparing at a lower level is desired, contact Comtech EF Data Product Support
for the correct spares for your particular converter.
B.4 Redundancy Systems – Converter Management
B.4.1
Remove a Faulted Converter
To remove a faulted “inline” converter for repair, do these steps:
1. Force a backup of the faulted unit.
2. Turn OFF the power to the faulted unit at the rear panel power switch
and disconnect the power cord. (DO NOT disconnect the RF and IF cables
from the Receive Switch Module (RSM).)
3. Unscrew the faulted unit RSM thumbscrews. Then, remove the rack
mounting screws at the front panel of the faulted unit.
4. From the rear of the faulted unit, hold the RSM, and push the chassis
towards the front of the rack until the module fully detaches from the
unit. Leave the RSM “dangle” by its connected cables.
5. Remove the faulted unit from the front of the rack.
To remove a faulted “backup” converter for repair, do these steps:
1. Turn OFF the power to the faulted BU at its rear panel power switch.
2. Remove the power cord from the faulted BU.
3. Disconnect the RF and IF cables from the faulted BU’s IOM.
4. Remove the rack mounting screws at the front panel of the faulted BU.
5. Remove the faulted BU from the front of the rack.
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Install a Replacement Converter
To install a replacement converter into your redundancy system, do these steps:
1. With the replacement unit on the bench, turn ON the unit power.
2. Configure the new unit for the correct redundancy settings:
a. Set Redundant Mode = ON;
b. Set the Address (Chain Position) to match the faulted unit;
c. Set the correct frequency and attenuation.
3. Turn OFF the replacement unit power and disconnect the power cord.
4. Remove the existing module (IOM, RSM, TSM, etc.) from the new unit.
5. Carefully install the new unit into the rack.
6. Plug the existing module in the rack into the replacement unit, and
finger-tighten the module thumbscrews.
7. Plug the power cord back into the replacement unit, and turn the power
ON.
8. Un-force the backup.
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Notes:
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2114 WEST 7TH STREET TEMPE ARIZONA 85281 USA
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480 • 333 • 2161 FAX
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