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/DT4572.IOM / CD-MNDT4572 Revision 1
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Revision 1
Comtech EF Data, 2114 West 7th Street, Tempe, Arizona 85281 USA, 480.333.2200, FAX: 480.333.2161
Comtech EF Data publication DT-4500 Series C- and Ku-Band Down
Converters Installation and Operation Manual (CEFD P/N
MN/DT4500.IOM) documents the C- and Ku-Band versions of this
product.
This manual provides installation and operation information for the Comtech EF
Data DT-4572 X-Band Down Converter. This document is intended for the
persons responsible for the operation and maintenance of the DT-4572.
Revision 1 of this manual represents a rewrite from Revision 0, in order to
document the current production models for the DT-4572 and to update the
manual to the current Comtech EF Data Technical Publications Department
Standards and Practices.
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-4572 X-Band Down Converter MN/DT4572.IOM
indicate other unsafe practices or risks of property damage.
A NOTE gives you important information about a task or the
Comtech EF Data publications.
Preface Revision 1
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
equipment.
A REFERENCE directs you to important operational information or
details furnished elsewhere, either in the manual or in adjunct
Examples of Multi-Hazard Notices
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DT-4572 X-Band Down Converter MN/DT4572.IOM
PRECIPITATION, CONDENSATION, OR HUMID ATMOSPHERES OF
Preface Revision 1
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).
•
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DT-4572 X-Band Down Converter MN/DT4572.IOM
MORE THAN 95% RELATIVE HUMIDITY.
Preface Revision 1
• 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-4572 X-Band Down Converter MN/DT4572.IOM
Symbol
Description
<HAR>
Type of power cord required for use in the European Community.
Symbol
Definition
Symbol
Definition
!
Preface Revision 1
• 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)
CAUTION: Double-pole/Neutral Fusing
ACHTUNG:
Zweipolige bzw. Neutralleiter-Sicherung
International Symbols
Alternating Current
Fuse
Protective Earth
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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DT-4572 X-Band Down Converter MN/DT4572.IOM
Preface Revision 1
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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DT-4572 X-Band Down Converter MN/DT4572.IOM
Preface Revision 1
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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DT-4572 X-Band Down Converter MN/DT4572.IOM
Preface Revision 1
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.
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Chapter 1. INTRODUCTION
product.
1.1Overview
Figure 1-1. DT-4572 X-Band Down Converter
The Comtech EF Data DT-4572 X-Band Down Converter (Figure 1-1) is designed
for the transmission of SCPC, DAMA and TDMA signals in communication systems
or satellite downlink data systems. The DT-4572 is also used in communications
system applications with full transponder HDTV and analog TV.
1) Chapter 2. SPECIFICATIONS
2) Comtech EF Data publication DT-4500 Series C- and Ku-Band Down
Converters Installation and Operation Manual (CEFD P/N
MN/DT4500.IOM) documents the C- and Ku-Band versions of this
1.2 Functional Description
Figure 1-2 shows the DT-4572 chassis with its top cover removed. The major
chassis components and module assemblies are:
•Signal Path Module
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DT-4572 X-Band Down Converter MN/DT4572.IOM
Introduction Revision 1
• 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-4572 Physical Configuration
1.2.1Applications
The DT-4572 operates over the RF frequency range with a typical gain of 45 dB.
The RF output level is +20 dBm @ 1 dB compression. This permits longer cable
runs and compensates for splitting networks without requiring options such as
external line amplifiers.
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DT-4572 X-Band Down Converter MN/DT4572.IOM
Introduction Revision 1
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 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.
An IOM can be installed for switching the RF output for single thread operations,
or for testing the output of the unit.
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 50 Ω 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.
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.
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Introduction Revision 1
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".
1.2.2RF Signal Conversion
Figure 1-3. Functional Block Diagram
Figure 1-3 depicts the functional block diagram for the DT-4572 in single thread
(standalone) applications. See Appendix A. REDUNDANT SYSTEM OPERATION
for more information about the converter’s use in redundant applications.
As a typical example of the RF signal processing, the RF input to the DT-4572 is
7250 to 7750 MHz at a typical level of -45 dBm. The RF is mixed in the first mixer
with a 6030 to 6530 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.)
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Introduction Revision 1
The intermediate IF of 1230 MHz is mixed in the second mixer with the 1290
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-4572, 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 panelVACuum 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 100BaseTX ‘Ethernet’ connector interface provides
Ethernet-based remote monitor and control capability via the S N M P,
Telnet, or HTTP (Web Server) Interfaces.
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OPERATION
Maintenance and
Appendix B. MAINTENANCE
Introduction Revision 1
1.3 DT-4572 Features
1.3.1 Physical Description
The DT-4572 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
converter 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:See:
• Rack installation and
mounting instructions
• Local control operating
instructions and procedures
• Remote control operating
instructions and procedures
• Redundant system operating
instructions and procedures
•
troubleshooting procedures
Chapter 3. INSTALLATION
Chapter 6. FRONT PANEL
OPERATION
Chapter 7. ETHERNET INTERFACE
OPERATION and
Chapter 8. SERIAL INTERFACE
Appendix A. REDUNDANT
SYSTEM OPERATION
TROUBLESHOOTING
AND
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DT-4572 X-Band Down Converter MN/DT4572.IOM
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1.3.2 Dimensional Envelope
Dimensions are shown in inches and [millimeters].
Figure 1-4. DT-4572 Dimensional Envelope
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DT-4572 X-Band Down Converter MN/DT4572.IOM
chassis and the current production unit differ as follows:
Introduction Revision 1
1.3.3 Front Panel
(TOP) Initially Released Chassis
(BOTTOM) Current Production Unit
Figure 1-5. Front Panel View
The unit 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
(LEFT) LEDs – Initially Released Chassis
(RIGHT) LEDs – Current Production Unit
These six Light-Emitting Diode (LED) indicators convey operational states as
follows:
POWER ON
Lights GREEN when prime power is applied to the unit.
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The keypads for the initially-released chassis and the current
Introduction Revision 1
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.
Item 4 – Keypad
production unit differ as follows:
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DT-4572 X-Band Down Converter MN/DT4572.IOM
Introduction Revision 1
(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 the 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).
Figure 1-6. Rear Panel (with IOM) – Current Production Unit
The DT-4572 chassis, as initially released (Figure 1-7), does not provide
an ‘Ethernet’ 100BaseTX RJ-45 port. Ethernet interface operation is not
available on these legacy products.
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 RJ-45 Ethernet port for operation of the Ethernet remote
control interfaces.
Item 7 – ‘J1 | COM1’ Serial Management Utility Connector
Use this DB-9F EIA-232/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).
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Introduction Revision 1
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. SPECFICIATIONS
• 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.
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Chapter 2. SPECIFICATIONS
Comtech EF Data publication DT-4500 Series C- and Ku-Band Down
Converter Installation and Operation Manual (CEFD P/N
MN/DT4500.IOM) documents the C- and Ku-Band versions of this
product.
2.1 Physical and Environmental Specifications
2.1.1 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
2.1.2 Physical Specifications
• Dimensions: 1.75 H x 19.00 W x 22 D inches
• Weight: 15 lbs (6.8 kg)
(44.4 mm H x 482.6 mm W x 558.8 mm D)
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DT-4572 X-Band Down Converter MN/DT4572.IOM
Specifications Revision 1
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: 32° to 122° F (0° to 50° C)
• Storage: -4° to 158 F° (-20° to 70° C)
2.1.5 Humidity (Non-condensing)
• Operating: 0 to 95% Relative maximum
• Storage: 99% maximum
2.1.6 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)
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Specifications Revision 1
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/0101-9 50 DT-4503, DT-4572, UT-4505, UT-4579 Non-switching, Type ‘N’
AS/0101-15 50 DT-4503 I/O, UT-4505 Type ‘SMA’
AS/0101-19 75 UT-4518 w/Isolator, Type ‘SMA’
Impedance
(Ohms)
Comments
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DT-4572 X-Band Down Converter MN/DT4572.IOM
AS/0101-40
75
DT-451X w/Isolator, Type ‘SMA’
(Ohms)
AS/0101-10
75
DT-4503, DT-4572, UT-4579 Switching, Type ‘N’
AS/0101-11
75
DT-4503 Switching, Type ‘SMA’
AS/0101-24
50
DT-4572, UT-4579 RF Switching, Type ‘N’
AS/0101-30
50
Type ‘SMA’
AS/0101-35
50
DT-451X w/Isolator, Type ‘SMA’
AS/0101-36
75
DT-451X w/Isolator, Type ‘SMA’
(Ohms)
AS/0101-3
75
DT-4503, UT-4505 Switching, Up, Type ‘SMA’
AS/0101-43
50
DT-451X, UT-4514/F w/Isolator
DT-4503, DT-451X, DT-4572, UT-4505, UT-4579 EQM for 1:1,
Specifications Revision 1
CEFD P/N
AS/0101-21 50 UT-4518 w/Isolator, Type ‘SMA’
AS/0101-23 75 UT-4514/F w/Isolator, Type ‘SMA’
AS/0101-29 50 UT-4514/F w/Isolator, Type ‘SMA’
AS/0101-39 50 DT-451X w/Isolator, Type ‘SMA’
Impedance
(Ohms)
Comments
2.1.8.5.2 PSM (Polarity Switch Module) Assemblies
CEFD P/N
Impedance
Comments
2.1.8.5.3 TSM (Transmit Switch Module) Assemblies
CEFD P/N
AS/0101-5 75 DT-4503, DT-4572, UT-4505, UT-4579 Switching, Up, Type ‘N’
AS/0101-8 50 DT-4503, DT-4572, UT-4505, UT-4579 Switching, Up, Type ‘N’
AS/0101-17 50 DT-4503, UT-4505 Switching, IF & RF, Type ‘SMA’
AS/0101-18 75 UT-4518 Switching IF & RF w/Isolator, Type ‘SMA’
AS/0101-22 75 UT-4514/F w/Isolator, Type ‘SMA’
AS/0101-27 50 UT-4514/F w/Isolator, Type ‘SMA’
AS/0101-28 50 UT-4518 w/Isolator, Type ‘SMA’
AS/0101-42 75 DT-451X w/Isolator, Type ‘SMA’
Impedance
Comments
2.1.8.5.4 EQM (Equalizer Module) Assemblies
CEFD P/N
AS/0101-13 75
AS/0101-25 50
Impedance
(Ohms)
Comments
Type ‘SMA’
DT-4503, DT-451X, DT-4572, UT-4505, UT-4579 1:N IF & RF
Switch, Type ‘SMA’
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DT-4572 X-Band Down Converter MN/DT4572.IOM
AS/0101-41
50
DT-4513 1:1 Switching
(Ohms)
AS/0101-4
75
DT-4503 Switching, Down, Type ‘SMA’
AS/0101-6
75
DT-4503, DT-4572, UT-4579 Switching, Type ‘N’
AS/0101-7
50
DT-4503, DT-4572, UT-4579 Switching, Type ‘N’
AS/0101-16
50
DT-4503 I/O, Type ‘SMA’
AS/0101-20
75
Receive Switch, RSM2
AS/0101-26
50
RSM2, Type ‘N’
AS/0101-37
50
DT-451X w/Isolator, Type ‘SMA’
Specifications Revision 1
CEFD P/N
AS/0101-31 75 DT-4513, UT-4514/F w/Isolator, Type ‘SMA’
AS/0101-32 50 DT-4513, UT-4514/F w/Isolator, Type ‘SMA
AS/0101-33 75 DT-4513, UT-4518/F w/Isolator, Type ‘SMA’
AS/0101-34 50 DT-4513, UT-4518/F w/Isolator, Typr ‘SMA’
Impedance
(Ohms)
Comments
2.1.8.5.5 RSM (Receive Switch Module) Assemblies
CEFD P/N
AS/0101-38 75 DT-451X w/Isolator, Type ‘SMA’
Impedance
Comments
2.2 Operational Specifications
2.2.1 Operating Frequency Range
7250 to 7750 MHz
2.2.2 Conversion
Dual, no inversion.
2.2.3 Frequency Selection Step Size
• STANDARD: 125 kHz steps
• OPTIONAL: 1 kHz steps
2–6
Page 45
DT-4572 X-Band Down Converter MN/DT4572.IOM
Specifications Revision 1
2.2.4 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
2.2.7.2 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 Output Level
+20 dBm @ 1 dB Compression
2–7
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DT-4572 X-Band Down Converter MN/DT4572.IOM
Specifications Revision 1
2.2.8.2 Range
Contact Comtech EF Data Product Support for your specific requirements.
• STANDARD: 50 to 88 MHz or 104 to 176 MHz
• OPTIONAL: 50 to 80 MHz or 100 to 180 MHz
2.2.8.3 Non-carrier Spurious
-80 dBm
2.2.8.4 Carrier Spurious
-65 dBc @ 0 dBm Output
2.2.8.5 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
2–8
Page 47
DT-4572 X-Band Down Converter MN/DT4572.IOM
Specifications Revision 1
2.2.9.2 Attenuation Adjustment
• STANDARD: 0 to 20 dB in 0.25 dB Steps
• OPTIONAL:0 to 20 dB in 0.1 dB Steps
2.2.9.3 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
2.2.9.5 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: 36 or 72 MHz
• OPTIONAL:40 or 80 MHz
2–9
Page 48
DT-4572 X-Band Down Converter MN/DT4572.IOM
Parameter
Limit (dBc/Hz)
Typical (dBc/Hz)
100 Hz
-69
-79
10 KHz
-89
-92
1 MHz
-110
-112
Specifications Revision 1
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
2.2.11 Phase Noise
1 KHz -79 -82
100 KHz -100 -102
2–10
Page 49
Chapter 3. INSTALLATION
AND
STARTUP
3.1Unpack and Inspect the Shipment
Figure 3-1. Unpack and Inspect the Shipment
The DT-4572X-Band Down Converter, its optional Installation and Operation
Manual (available online at http://www.comtechefdata.com), its bearingless
3–1
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DT-4572 X-Band Down Converter MN/DT4572.IOM
Installation and Startup Revision 1
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
Page 51
CAUTION
DT-4572 X-Band Down Converter MN/DT4572.IOM
Installation and Startup Revision 1
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 (
• Comtech EF Data’s provided
• For information about custom rack enclosures, contact Comtech EF Data
Product Support.
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.
Figure 3-3).
Bearingless Rack Slide Set (Figure 3-4).
3–3
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DT-4572 X-Band Down Converter MN/DT4572.IOM
2
DT-4572 chassis
3
Standard Rack Shelving
4
Rack Enclosure Threaded Front Rail (typical)
Installation and Startup Revision 1
Feature Description
1 Custom Rack Enclosure
5 Unit Front Panel
6 User-supplied Screws
Figure 3-2. Install the Unit into a Rack Enclosure
3–4
Page 53
DT-4572 X-Band Down Converter MN/DT4572.IOM
1 2 2
HW/10-32SHLDR
Shoulder Screw, #10
3 2 2
HW/10-32SPLIT
Lock Washer, #10
Installation and Startup Revision 1
3.2.1 Install the Optional Rear Support Brackets Kit
Feature Description
1 Back of unit
2 Rack Enclosure Threaded Rear Mounting Rail (typical)
Kit / Quantity
Item
CEFD P/N Description
KT/6228-2 KT/6228-3
2 4 4 HW/10-32FLT Flat Washer, #10
4 2 2 HW/10-32HEXNUT Hex Nut, #10
5 4 4 HW/10-32x1/2RK
2 – FP/6138-2
Bolt, #10, Rear Support
Bracket
Bracket, Rear Support
(4”)
6
– 2 FP/6138-3
Figure 3-3. Install the Optional Rear-Mounting Support Brackets Kit
Bracket, Rear Support
(10”)
3–5
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DT-4572 X-Band Down Converter MN/DT4572.IOM
Installation and Startup Revision 1
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.
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DT-4572 X-Band Down Converter MN/DT4572.IOM
Installation and Startup Revision 1
3.2.2 Install the Optional Rack Slide Set
If the unit 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 Description
FP/SL0006 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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DT-4572 X-Band Down Converter MN/DT4572.IOM
Installation and Startup Revision 1
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 90-125VAC or
205-240VAC 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
Page 57
Chapter 4. FRONT AND REAR
1)Not all of these operational interface types may be available.
PANEL CONNECTORS
4.1Overview – Cabling Connection Types
Comtech EF Data’s DT-4572 X-Band Down Converter uses a number of different
cables. Each cable type is typically dedicated to a specific mode of operation.
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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DT-4572 X-Band Down Converter MN/DT4572.IOM
Front and Rear Panel Connectors Revision 1
4.1.1 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.
4–2
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DT-4572 X-Band Down Converter MN/DT4572.IOM
BNC plugs and jacks feature a Bayonet
‘F,’ and Type ‘SMA’ connectors.
Front and Rear Panel Connectors Revision 1
4.1.1.1 Type ‘BNC’
Coupling design.
4.1.1.2 Type ‘TNC’
TNC plugs and jacks feature a Threaded
Coupling design similar to Type ‘N’, Type
4.1.1.3 Type ‘N’
4.1.1.4 Type ‘F’
Type ‘N’ connectors feature a Threaded
Coupling design similar to Type ‘TNC’,
Type ‘F’, and Type ‘SMA’ connectors.
Type ‘F’ connectors feature a Threaded
Coupling design similar to Type ‘TNC’,
Type ‘N’, and Type ‘SMA’ connectors.
4–3
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DT-4572 X-Band Down Converter MN/DT4572.IOM
Front and Rear Panel Connectors Revision 1
4.1.1.5 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.
4–4
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DT-4572 X-Band Down Converter MN/DT4572.IOM
Front and Rear Panel Connectors Revision 1
4.1.3RJ-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.
4–5
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DT-4572 X-Band Down Converter MN/DT4572.IOM
Front and Rear Panel Connectors Revision 1
4.1.4 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.
4–6
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DT-4572 X-Band Down Converter MN/DT4572.IOM
Front and Rear Panel Connectors Revision 1
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-4572 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) Optional -48VDC Unit Power Interface
(CENTER) Standard AC Unit with IOM
(BOTTOM) Front Panel
Figure 4-5. Rear and Front Panels (Current Production Chassis with IOM)
DT-4572 X-Band Down Converter MN/DT4572.IOM
Front and Rear Panel Connectors Revision 1
4.2.1 Power Connections
4.2.1.1 Power Interface Module – Standard AC Unit
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-4572 X-Band Down Converter MN/DT4572.IOM
Front and Rear Panel Connectors Revision 1
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.
4.2.1.1.2AC 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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DT-4572 X-Band Down Converter MN/DT4572.IOM
CAUTION
Front and Rear Panel Connectors Revision 1
4.2.1.2Power 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!
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.
4–10
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DT-4572 X-Band Down Converter MN/DT4572.IOM
Front and Rear Panel Connectors Revision 1
4.2.1.2.2DC 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.
4.2.2Unit 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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DT-4572 X-Band Down Converter MN/DT4572.IOM
about each connector type and its connection instructions.
Front and Rear Panel Connectors Revision 1
4.2.3 Operational Connections
See Sect. 4.1 Overview – Cabling Connections Types for information
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 50/75Ω, and requires an input level of 0 ±5 dBm.
Use this optional female BNC connector to provide a 10 MHz reference for
customer use. The impedance is matched for 50/75Ω, and provides an output
level of 5 ±3 dBm.
Item 6 – ‘Ethernet’ Ethernet Management Utility Port
The DT-4572 X-Band Down Converter, as initially released, does not
feature a rear panel ‘Ethernet’ port. Only current production units offer
Ethernet Interface operation.
Use this ‘Ethernet’ 100 BaseTX RJ-45 port for operation of the Ethernet remote
control interfaces. It is also used for updating DT-4572 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.
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
Table 4-3. ‘J1 | COM1’ 4-Wire
EIA-485 Pinout
8 +Rx/Tx; Signal 8 +Rx; Signal
9 -Rx/Tx; Signal Complement 9 -Rx; Signal Complement
Table 4-4. ‘J1 | COM1’ EIA-232C Pinout
2 TD; Transmit Data
3 RD; Receive Data
4
5 GND; Ground
6
7
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DT-4572 X-Band Down Converter MN/DT4572.IOM
Pin #
Description
Notes
1
Summary Fault NC
2
Summary Fault NO
5
Ground
7
External Fault Input
8 9
modules.
Front and Rear Panel Connectors Revision 1
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
1) Pin 1 to Pin 6: FAULT
2) Pin 2 to Pin 6 OK (NO FAULT)
3
4
6 Summary Fault COM
3) Pin 7 to Pin 5: Forced Faults (typically used
with external group delay equalizers)
Item 9 – Removable Module
See Sect.4.2.4 for information about these removable “personality”
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 4-13 (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 4-13 (Item 12): This female BNC connector
(-20 dBc nominal) provides the user IF test point interface.
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DT-4572 X-Band Down Converter MN/DT4572.IOM
Front and Rear Panel Connectors Revision 1
4.2.3.1DT-4572 Series Cable Connections
Figure 4-15. DT-4572 Cabling Example (with RSM)
Figure 4-15 provides a cabling connection example for the DT-4572 X-Band
Down Converter. This example depicts use of a Receive Switch Module (RSM) in
a standalone configuration – the module cabling requirements will vary.
Contact Comtech EF Data Product Support for cabling instructions
specific to your converter application.
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DT-4572 X-Band Down Converter MN/DT4572.IOM
Contact Comtech EF Data Product Support for complete details and
Front and Rear Panel Connectors Revision 1
4.2.4 Removable “Personality” Modules
specifications for the module(s) specific to your system.
See Chapter 2. SPECIFICATIONS for the listings of available modules for
use with the DT-4572 Down Converters and UT-4579 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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DT-4572 X-Band Down Converter MN/DT4572.IOM
2
Cntl_10
3
Cntl_8
4
Cntl_6
7
Cntl_In
12
-Rx/Tx
13
GND
16
Cntl_7
21
+14V In
22
GND
23
Aux_2
Front and Rear Panel Connectors Revision 1
4.2.4.1 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 BNC
female connectors.
• The RF Input/Output and LP (Loop) In/Out connectors may be Type ‘N’ or
Type ‘SMA’ female connectors, depending on the application.
• All 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’ D ata In terf ace Pinout
Pin # Description
1 Cntl_12
5 Cntl_4
6 Cntl_2
8 +14V Out
9 +14V In
10 Aux_3
11 Aux_1
14 Cntl_11
15 Cntl_9
17 Cntl_5
18 Cntl_3
19 Cntl_1
20 +14V Out
24 GND
25 +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 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-4572 Standalone Cabling Example to IOM
Figure 4-18. DT-4572 Standalone Cabling Example to RSM
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4.2.4.3 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 has an Input/Output Module (IOM), while the online converters have
Receive Switch Modules (RSM). 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:
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Chapter 5. FIRMWARE
UPDATE
5.1Firmware Overview
Make sure to operate the DT-4572 with its latest available firmware.
The DT-4572 X-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-4572 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-4572 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’ 100BaseTX RJ-45 port.
3. Connect a user-supplied serial cable from the User PC to the DB-9F ‘J1 |
COM1’ port.
4. Extract the firmware update files from the archive download file. You m ay
then use Comtech’s “CReflash” utility. Otherwise, you must use the
DT-4572 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-4572.
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The Comtech EF Data Web site catalogues its firmware update archive
program’s Help documentation.
Firmware Update Revision 1
5.1.2 About Firmware Numbers, File Versions, and
Formats
files by product type (e.g., router, modem, etc.), the specific model, and
optional hardware configurations. The DT-4572 files are provided under
“Home | Support | Software Downloads | Flash & Software Update
Files | Converters | DT-4500 Series & UT-4500 Series Software
Downloads.”
The DT-4572 firmware download hyperlink for the Ethernet-ready
current production unit (i.e., Ver6x chassis) is F0000202x_V###.
The DT-4572 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 third-
party 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
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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-4572 Management IP Address and
Firmware Information
1. On the DT-4572 – 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-4572 front panel to identify your default Management IP
Address. You will not be able to access the DT-4572 HTTP Interface
without this information. See Section 5.2.3.1.
3. Get the firmware information using one these methods:
• To use the DT-4572 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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5.2.3.1 Use the DT-4572 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_4572
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-4572. 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:
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instructed and then press Enter.
Firmware Update Revision 1
• To use the Windows Desktop, see Section 5.2.4.1.
• 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
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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5.2.4.2 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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5.2.4.4 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 (o r, d epending 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-4572 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:
oClick [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-4572.
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
fo ld e r. 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-4572.
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5.3.1.1 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” fo ld e r.
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-4572 Unit
5.4.1 Important Considerations
Before you proceed with the firmware update, make sure that:
• You connect the DT-4572 ‘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-4572 Telnet or serial interfaces.
• You have noted your DT-4572 Management IP Address.
• Your PC is running a compatible Web browser for operation of the
DT-4572 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
fo ld e r.
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1)The “CReflash” utility is provided with the firmware download.
Firmware Update Revision 1
5.4.2 Steps to “CReflash” Upload the Firmware Files
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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1)Typical for all steps: “xxx.xxx.xxx.xxx” represents the assigned unit
Firmware Update Revision 1
5.4.3 Steps to FTP Upload the Firmware Files
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-4572 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-4572 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 v erify 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).
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5.4.4 Steps to Complete the Firmware Update Procedure
• Chapter 6. FRONT PANEL OPERATION
• Chapter 7. ETHERNET INTERFACE OPERATION
Use the DT-4572 front panel or the HTTP Interface to select the new firmware
image. You must then reboot the unit for the update to take effect.
5.4.4.1 Select the Boot Image
5.4.4.1.1 Use the Front Panel to Select the Boot Image
Do these steps from the DT-4572 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. You must then hard-reboot or soft-reboot the unit.
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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.
2. Verify the new firmware version has booted; for example, check the
firmware version displayed on the DT-4572 front panel:
DT_4572
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-4572 reboots with the Current Active Firmware Image.
3. To load a second image, repeat the tasks described throughout Section
5.4.4.
The DT-4572 is now operating with its latest firmware. The firmware update
process is complete.
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Notes:
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Chapter 6. FRONT PANEL
OPERATION
6.1Front Panel Overview
You may fully control and monitor the DT-4572 X-Band Down Converter from the
front panel (Figure 6-1).
(TOP) Initially Released Chassis
(BOTTOM) Current Production Unit
Figure 6-1. DT-4572 Front Panel View
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6.1.1 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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The Light-Emitting Diode (LED) Indicators for the initially-released
Front Panel Operation Revision 1
6.1.2 LED Indicators
chassis and the current production unit differ as follows:
(LEFT) LEDs – Initially Released Chassis
(RIGHT) LEDFs – 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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The displays for the initially-released chassis and the current
Front Panel Operation Revision 1
6.1.3 Vacuum Fluorescent Display (VFD)
production unit differ as follows:
(LEFT) Liquid Crystal Display (LCD) – Initially Released Chassis
(RIGHT) Vacuum Fluorescent Display (VFD) – Current Production Unit
DT-4572
SW VER X.X.X SN#########
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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The keypads for the initially-released chassis and the current
Front Panel Operation Revision 1
6.1.4 Keypad
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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6.2.2
Select (Main) Menu
CONFIG; MONITOR; FAULTS; PRE-SELECTS; UTILITY
6.2.3.2.1
(REMOTE:) LOCAL
–
(REMOTE:) ETHERNET
ADDRESS
(REMOTE:) ETHERNET
GATEWAY
(REMOTE:) ETHERNET
SNMP
6.2.3.3
(CONFIG:) REDUNDANCY
MODE; Auto/Manual; FORCE; HSB
6.2.3.3.1
(REDUNDANCY:) MODE
On/Off; BU/#01-12
6.2.3.3.4
(REDUNDANCY:) HSB
–
6.2.3.4
(CONFIG:) FAULTRECOVERY
Manual/Auto
6.2.5
FAULTS
CURRENT; STORED; VIEW
6.2.5.1
(FAULTS:) CURRENT
–
6.2.6
PRE-SELECTS
LOAD; PROGRAM; CLEAR
TEST
6.2.7.3
(UTILITY:) FIRMWARE
INFO; SELECT
6.2.7.3.1
(FIRMWARE:) INFO
BOOTROM; IMAGE#1; IMAGE#2
6.2.7.3.1.1
–
6.2.7.3.1.2
BULK; APP; FPGA
6.2.7.5
(UTILITY:) REFOSC
(Reference Frequency Adjustment)
6.2.7.6
(UTILITY:) SLOPE
(Converter Slope Adjustment)
Front Panel Operation Revision 1
6.2 Front Panel Operation – Menu Matrix
Chapter Sect. Menu Screen Description Submenu Selections
(FIRMWARE:) INFO ¹ BOOTROM
(FIRMWARE:) INFO ¹ IMAGE#1/#2
–
–
TIME; DISP; FIRMWARE; AID; REFOSC; SLOPE; LAMP-
6–6
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DT-4572 X-Band Down Converter MN/DT4572.IOM
Front Panel Operation Revision 1
6.2.1 Opening Screen
DT_4572
SW VER. X.X.X SN#########
The opening screen displays once you apply power to the unit. The top line
identifies the unit model. 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.
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.
6–7
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DT-4572 X-Band Down Converter MN/DT4572.IOM
Front Panel Operation Revision 1
6.2.3 (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=07255.125 MHz
Atten=19.75 dB Rx = Off
On the top line, set the converter Frq (Frequency). You may edit the current
frequency channel from RF
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.
Low
to RF
MHz (e.g.; 7250.000 to 7750.000 MHz) in
High
6–8
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