Comtech EF Data DT-4500 Series User manual

IMPORTANT NOTE: The information contained in this document supersedes all previously published
information regarding this product. Product specifications are subject to change without prior notice.
Part Number MN/DT4500.IOM / CD-MNDT4500 Revision 2
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

Copyright © 2016 Comtech EF Data. All rights reserved. Printed in the USA. Comtech EF Data, 2114
West7thStreet, Tempe, Arizona 85281 USA, 480.333.2200, FAX: [phone]

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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
5.4.4.1.2Use 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

xvii
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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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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Preface Revision 2
xx
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.