Comtech EF Data Radyne DMD1050 Installation And Operation Manual

Comtech EF Data is an

AS9100 Rev B / ISO9001:2000 Registered Company

DMD1050

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.

Satellite Modem Board

Installation and Operation Manual

MN-DMD1050 Revision 9

Comtech EF Data is an

AS9100 Rev B / ISO9001:2000 Registered Company

DMD1050

Satellite Modem Board

Installation and Operation Manual

Part Number MN-DMD1050

Revision 9

Copyright © 2011 Comtech EF Data. All rights reserved. Printed in the USA.

Comtech EF Data, 2114 West 7th Street, Tempe, Arizona 85281 USA, 480.333.2200, FAX: [phone]

This page is intentionally blank.

Table of Contents

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

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

1.2 DMD1050 Configurations .................................................................................................................... 1–2

1.2.1 Features/Options Installed at Time of Order ........................................................................................... 1–2

1.2.2 Feature Upgrades ..................................................................................................................................... 1–2

1.3 Function Accessibility .......................................................................................................................... 1–2

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

2.1 Installation Requirements ................................................................................................................... 2–1

2.2 Unpacking .......................................................................................................................................... 2–2

2.3 Removal and Assembly ....................................................................................................................... 2–2

2.4 Installation Considerations ................................................................................................................. 2–2

2.5 DMD1050 Initial Configuration Check.................................................................................................. 2–2

2.5.1 Standard DMD1050 Factory Configuration Settings ................................................................................ 2–3

2.6 Modulator Checkout........................................................................................................................... 2–4

2.6.1 Initial Power-Up ....................................................................................................................................... 2–4

2.6.2 M&C Web Browser Setup ........................................................................................................................ 2–4

2.6.3 M&C Terminal Setup ................................................................................................................................ 2–5

2.7 Storage ............................................................................................................................................... 2–6

CHAPTER 3. THEORY OF OPERATION ............................................................................... 3–1

3.1 DMD1050 Hardware ........................................................................................................................... 3–1

3.1.1 DMD1050 L-Band Printed Circuit Card ..................................................................................................... 3–2

3.1.2 DMD1050 Baseband Processing Printed Circuit Card .............................................................................. 3–2

3.2 DMD1050 Functional Block Diagram ................................................................................................... 3–4

3.2.1 Baseband Processing ................................................................................................................................ 3–4

3.2.2 Tx Baseband Processing ........................................................................................................................... 3–4

3.2.3 Rx Baseband Processing ........................................................................................................................... 3–5

3.3 Monitor & Control (M&C) ................................................................................................................... 3–5

3.3.1 Terminal Port/ES-ES Communications (J1) ............................................................................................... 3–6

3.3.2 Terminal Mode Control ............................................................................................................................ 3–6

3.3.3 Modem Terminal Mode Control .............................................................................................................. 3–6

3.3.4 Modem Setup for Terminal Mode ........................................................................................................... 3–7

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3.3.5 Connecting the Terminal .......................................................................................................................... 3–7

3.3.6 Terminal Screens ...................................................................................................................................... 3–8

3.4 Modem Remote Communications (RLLP) ............................................................................................. 3–8

3.4.1 RLLP Protocol Structure ........................................................................................................................... 3–8

3.5 Modem Setup for Ethernet M&C (J10) ................................................................................................ 3–8

3.6 M&C Default/Reset Plug Settings (JP5 & JP6) ...................................................................................... 3–9

3.7 Ethernet Data Interface – (J11)............................................................................................................ 3–9

3.8 Internal Clock ................................................................................................................................... 3–13

3.9 Loopback Features (Terrestrial & IF) .................................................................................................. 3–14

3.10 DMD1050 Clocking Options ............................................................................................................... 3–17

3.10.1 TX Clock Options ................................................................................................................................ 3–17

3.10.2 RX Buffer Clock Options ..................................................................................................................... 3–19

3.10.3 RX SAT Clock ...................................................................................................................................... 3–19

3.10.4 SCTE: Serial Clock Transmit External .................................................................................................. 3–19

3.10.5 SCT: Serial Clock Transmit .................................................................................................................. 3–19

3.11 Ethernet Data Interface .................................................................................................................... 3–20

3.12 Reed-Solomon Codec ........................................................................................................................ 3–20

3.12.1 Reed-Solomon Operation in the DMD1050 .......................................................................................3–20

3.12.2 Reed-Solomon Code Rate.................................................................................................................. 3–20

3.12.3 Interleaving ........................................................................................................................................ 3–21

3.13 DMD1050 Automatic Uplink Power Control (AUPC Operation) .......................................................... 3–22

3.13.1 Radyne AUPC ..................................................................................................................................... 3–22

3.13.2 EF AUPC ............................................................................................................................................. 3–23

3.13.3 Near Side AUPC .................................................................................................................................. 3–23

3.14 Asynchronous Overhead Operation (J1) ............................................................................................ 3–25

3.15 Standard IBS ES to ES Mode .............................................................................................................. 3–27

3.16 Enhanced Asynchronous Mode (Radyne Proprietary) ........................................................................ 3–28

3.17 Satellite Control Channel (SCC) - J1.................................................................................................... 3–28

3.17.1 SCC Framing Structure ....................................................................................................................... 3–29

3.17.2 Aggregate Data Rate .......................................................................................................................... 3–30

3.17.3 Overhead Rate Comparison ............................................................................................................... 3–31

3.17.4 Actual Overhead Rate Calculation ..................................................................................................... 3–32

3.17.5 SCC Overhead Channel Setup ............................................................................................................ 3–33

3.18 DMD1050 ID Codes (Feature Upgrades) ............................................................................................ 3–35

3.19 Strap Codes ...................................................................................................................................... 3–35

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CHAPTER 4. REAR PANEL INTERFACE ............................................................................. 4–1

4.1 DMD1050 Connections ....................................................................................................................... 4–1

4.2 Compact Flash (J9) .............................................................................................................................. 4–5

4.3 Power Input (J7) ................................................................................................................................. 4–5

4.4 Chassis Connections (Standard) ........................................................................................................... 4–5

4.4.1 EXT REF (J8) .............................................................................................................................................. 4–5

4.4.2 TX L-Band IF (J1) ....................................................................................................................................... 4–5

4.4.3 RX L-Band IF (J2) ....................................................................................................................................... 4–5

4.4.4 ASYNC & Remote Port (J1) - 10 Pin Dual Row Header ............................................................................. 4–6

4.4.5 TERMINAL - Factory use only .................................................................................................................. 4–8

4.4.6 MIL-188-114A (J2) EIA-530 Port RS-422 ................................................................................................... 4–8

4.4.7 ETHERNET M&C (J10) ............................................................................................................................... 4–9

4.5 Ethernet Data Interface (J11) .............................................................................................................. 4–9

4.6 BUC & LNB Power Input (J3)................................................................................................................ 4–9

CHAPTER 5. MAINTENANCE AND TROUBLESHOOTING ........................................... 5–1

5.1 Periodic Maintenance......................................................................................................................... 5–1

5.2 Troubleshooting ................................................................................................................................. 5–1

5.2.1 Alarm Faults ............................................................................................................................................. 5–2

5.2.2 Alarm Masks............................................................................................................................................. 5–3

CHAPTER 6. TECHNICAL SPECIFICATIONS ..................................................................... 6–1

6.1 Data Rates .......................................................................................................................................... 6–1

6.2 Modulator .......................................................................................................................................... 6–1

6.3 Demodulator ...................................................................................................................................... 6–2

6.4 Plesiochronous Buffer ......................................................................................................................... 6–2

6.5 Monitor and Control ........................................................................................................................... 6–2

6.6 Terrestrial Interfaces ........................................................................................................................... 6–2

6.7 Environmental .................................................................................................................................... 6–2

6.8 Physical .............................................................................................................................................. 6–2

6.9 DMD2050 Data Rate Limits ................................................................................................................. 6–3

6.9.1 Non-DVB ................................................................................................................................................... 6–3

6.9.2 DVB ........................................................................................................................................................... 6–4

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6.10 DMD1050 BER Specifications .............................................................................................................. 6–6

6.10.1 BER Performance (Viterbi) ................................................................................................................... 6–6

6.10.2 BER Performance (Sequential) ............................................................................................................. 6–7

6.10.3 BER Performance (Viterbi with Reed-Solomon) .................................................................................. 6–8

6.10.4 BER Performance (8PSK Trellis) ........................................................................................................... 6–9

6.10.5 BER Performance (16QAM Viterbi) .................................................................................................... 6–10

6.10.6 BER Performance (16QAM Viterbi with Reed-Solomon) ................................................................... 6–11

6.10.7 BER Performance ((O)QPSK Turbo) .................................................................................................... 6–12

6.10.8 BER Performance (8PSK Turbo) ......................................................................................................... 6–13

6.10.9 BER Performance (16QAM Turbo) ..................................................................................................... 6–14

6.10.11 ACG Output Voltage........................................................................................................................... 6–18

CHAPTER 7. WEB BROWSER.................................................................................................. 7–1

7.1 Web Browser User Interface ............................................................................................................... 7–1

7.2 Configuring Your PC ............................................................................................................................ 7–1

7.2.1 Appearance .............................................................................................................................................. 7–2

7.2.2 Navigation ................................................................................................................................................ 7–2

7.2.3 LED Indicators........................................................................................................................................... 7–3

7.3 GUI Screen Menus .............................................................................................................................. 7–4

7.3.1 Introduction Menu ................................................................................................................................... 7–5

7.3.2 Password Setup ........................................................................................................................................ 7–7

7.3.3 IP and Application Administration ........................................................................................................... 7–9

7.3.4 Monitor and Control Menu .................................................................................................................... 7–14

APPENDIX A. PRODUCT OPTIONS ............................................................................................ A–1

A.1 Hardware Options ............................................................................................................................. A–1

A.2 Internal High-Stability ........................................................................................................................ A–1

A.3 Customized Options ........................................................................................................................... A–1

APPENDIX B. CARRIER CONTROL ...................................................................................... B–1

B.1 States ................................................................................................................................................. B–1

B.2 Carrier Off .......................................................................................................................................... B–1

B.3 Carrier On ........................................................................................................................................... B–1

B.4 Carrier Auto ........................................................................................................................................ B–1

B.5 Carrier VSat ........................................................................................................................................ B–2

B.6 Carrier RTS .......................................................................................................................................... B–2

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APPENDIX C. TCP/IP ETHERNET SETUP ........................................................................... C–1

C.1 Introduction ....................................................................................................................................... C–1

C.2 TCP/IP Network Configuration ............................................................................................................ C–1

C.3 Network Configuration Summary ........................................................................................................ C–3

C.4 Ethernet Test...................................................................................................................................... C–3

C.5 Testing the Ethernet Connection using the Ping Program (Optional) .................................................... C–6

APPENDIX D. WEB BROWSER SETUP GUIDE ............................................................... D–1

D.1 Introduction ...................................................................................................................................... D–1

D.2 Required Items .................................................................................................................................. D–1

D.3 Web Interface Setup Guidelines ......................................................................................................... D–1

D.3.1 Preparing the DMD1050 for Web Setup ................................................................................................. D–1

D.4 IP Network Change from the Initial Web Setup .................................................................................. D–4

D.4.1 Configuring the modem .......................................................................................................................... D–4

D.4.2 Configuring the Computer ...................................................................................................................... D–5

D.5 WEB Users Setup and Configurations Controls Options ....................................................................... D–6

D.5.1 Change Authentication Password ........................................................................................................... D–7

D.5.2 Boot Mode Options (Reference only) ..................................................................................................... D–8

APPENDIX E. USER INTERFACE CONNECTIONS .......................................................... E–1

E.1 User Interface Connections ................................................................................................................. E–1

APPENDIX F. ETHERNET DATA INTERFACE ................................................................... F–1

F.1 Introduction ....................................................................................................................................... F–1

F.2 Point-to-Point Applications ................................................................................................................. F–2

F.3 The Importance of Transparent Operation .......................................................................................... F–3

F.4 Point-to-Multipoint Applications ......................................................................................................... F–4

F.5 High Speed Mesh Applications ............................................................................................................ F–5

F.6 Low Speed Mesh Applications............................................................................................................. F–6

F.7 Remote Monitor and Control via SNMP .............................................................................................. F–7

F.8 Enhanced Quality of Service (QOS)...................................................................................................... F–8

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F.8.1 Normal QOS ............................................................................................................................................. F–9

F.8.2 Port Based QOS ........................................................................................................................................ F–9

F.8.3 Fair Weighted Queuing ............................................................................................................................ F–9

F.8.4 Strict Priority Queuing .............................................................................................................................. F–9

F.8.5 Satellite Packet Error Checking .............................................................................................................. F–10

F.8.6 Automatic Learning and Aging ............................................................................................................... F–10

F.8.7 Internal Buffer and Throttle ................................................................................................................... F–10

F.8.8 Adding Acceleration, Compression, Network Security, and Traffic Shaping .......................................... F–11

F.8.9 Any Data Rate, Any Modulation Type, Any FEC, Any Application .......................................................... F–11

APPENDIX G. DMD1050 STRAP CODES .................................................................................. G–1

G.1 Introduction ...................................................................................................................................... G–1

APPENDIX H. SOFTWARE UPGRADE PROCEDURE .................................................... H–1

H.1 Software Upgrade Procedure ............................................................................................................. H–1

H.2 Terminal Software Upgrade ............................................................................................................... H–1

H.3 Required Equipment .......................................................................................................................... H–1

H.4 Upgrade Procedure............................................................................................................................ H–1

H.5 Demonstration Procedure.................................................................................................................. H–2

H.6 Canceling Demonstration Mode ......................................................................................................... H–3

H.7 Web Browser Software Upgrade ........................................................................................................ H–4

H.8 Monitor and Control .......................................................................................................................... H–4

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About this Manual

This manual describes the installation and operation of the DMD1050.

Conventions and References

Trademarks

PREFACE

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

Related Documents

• Department of Defense (DOD) MIL-STD-188-165A, Interoperability and Performance

Standards for SHF Satellite Communications PSK Modems (FDMA Operation) (dated

November 2005)

• Department of Defense (DOD) MIL-STD-188-114A, Electrical Characteristics of Digital

Interface Circuits

• EN300-421 and EN301-210 ETSI

• INTELSAT Earth Station Standards IESS-308, -309, -310, and -315

Cautions and Warnings

IMPORTANT or NOTE indicates a statement associated with the task

IMPORTANT

CAUTION

being performed or information critical for proper equipment function.

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

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

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Preface MN-DMD1050

Warranty Policy

Comtech EF Data products are warranted against defects in material and workmanship
for a period of two years from the date of shipment. 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 two year warranty, or a 90 day extended
warranty, whichever is longer.

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

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

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

Limitations of Warranty

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

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

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

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

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

use them either separate from or in combination with any other equipment or products.

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

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products, or for any inability to

DMD1050 Revision 9
Preface MN-DMD1050

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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Preface MN-DMD1050

Customer Support

Support Business Hours - Monday through Friday - 8:00 a.m. to 5:00 p.m. (MST)

Comtech EF Data & Radyne

Tel: [phone]
Fax: [phone]
Email: [e-mail]

Tel: [phone]
Fax: [phone]
Email: [e-mail]

Tel: [phone] - select option #2
Fax: [phone]
Email: [e-mail]

Radyne

Tel: [phone]

• Satellite Modems

• Modem Accessories

• Amplifiers

• Converters

• Transceivers

• Terminals

• IP-Enabled Satellite Modems

• IP-Based Modem Accessories

• Encapsulators, Receivers, Filtering &

Encryption

• turboIP® Performance Enhancement

Proxies (PEP)

• SkyWire™ MDX420 Satellite Network

Gateway

• Vipersat Network Products

• IP-Enabled Satellite Modems used in

conjunction with VMS

After Hours and Weekends:

Comtech

Tel: [phone]

Memotec Products

• CX-U: RAN Optimization

• NetPerformer: Satellite Routers

Stampede Technologies

• FX Series Application Delivery Controllers

• FX Series WAN Optimization Controllers

Tel: [phone]
Fax: [phone]
Email: [e-mail]
Business Hours - Monday Through Friday
8:00 a.m. to 5:00 p.m. (EST)

Tel: [phone]
Fax: [phone]
Email: [e-mail]
Business Hours - Monday Through Friday
8:30 a.m. to 5:30 p.m. (EST)
After Hours and Weekends: +1.937.291.5035

iv

This chapter provides an overview of the DMD1050 Satellite Board Modem, which is designed
for satellite IP, telecom, video and internet applications.

1.1 Overview

• Duplex L-Band modem

• MIL-STD-188-165A standards

• IDR, IBS and DVB

• Data rates up to 20 Mbps

Chapter 1. Introduction

Figure 1-1. DMD1050 Satellite Board Modem (Top View)

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DMD1050 Satellite Modem Board Introduction

The DMD1050's impressive remote accessibility rivals all others in the field. Remote control via
RLLP (Radyne Link Level Protocol), Ethernet 10 Base-T SNMP and Web Browser includes
control of all the modem's features plus software maintenance. The unit presents monitor and
control functions on the screen.

Additional options and configuration (such as Monitor and Control (M&C) Functions) can be
activated in seconds via the Web Browser.

Compatibility with current modems, such as the DMD2050, DMD50, DMD20 and the DISA
certified MIL-188-165 compliant DMD15L are maintained for seamless substitution and addition
to existing systems.

This unit offers built in Standard Interfaces that are selectable from MIL-188-114A and a Dual
Port Ethernet Bridge.

1.2 DMD1050 Configurations

The DMD1050 can be configured in the following different ways:

• Features and options that are installed when the unit is ordered

• Feature upgrades

• Hardware options that the user can install at their own location

• Options that are installed to a unit that is sent to a comtech service center

1.2.1 Features/Options Installed at Time of Order

Features installed at the time of ordering are the options pre-installed/initialized in the factory
prior to shipment. These can be reviewed from the web browser. Refer to Section 4, User
Interfaces for information on how to view these features.

Factory installed options are chassis and board configurations that are introduced during
manufacture.

1.2.2 Feature Upgrades

Feature Upgrades are a simple and quick way of changing the feature set of an installed modem.
Feature upgrades are how most DMD1050 options are implemented. Features may be purchased
at any time by contacting a salesperson. Refer to Section 3 and Appendix D, for information on
how upgrade features.

1.3 Function Accessibility

All functions can be accessed with a terminal or personal computer via a serial link for complete
remote monitoring and control capability.

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Chapter 2. Installation

This section provides instructions on unpacking and installation, as well as storage of the unit.

2.1 Installation Requirements

Installation of the DMD1050 Modem Board requires adequate planning by the user to ensure no
damage will occur to the unit. Package design considerations for the modem board include
mounting, temperature limits, adequate ventilation, limited vibration, no exposure to
condensation/ moisture and a stable power source.

Mating connectors are supplied with each unit. A full description of the modems pin outs can be
found in Section 4. Appendix E gives details of the various connectors and mating connectors
supplied.

WARNINGS

1. The DMD1050 contains a Lithium Battery

EXPLOSION exists if the battery is incorrectly replaced. Replace only

with the same or equivalent type recommended by the manufacturer.
Dispose of used batteries in accordance with local and national
regulations

2. Make sure to eliminate the potential for Static Discharge that can
damage the Modem Board.

3. There are no user-serviceable parts or configuration settings located
inside the DMD105.

CAUTION

Before connecting power to the unit, disconnect the transmit output from the
operating ground station equipment. Communication traffic can be disrupted
by connecting power to a unit when the configuration settings are not known
and may be incorrect.

DANGER OF .

Make sure to obey proper ESD practices to avoid damaging the unit.

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DMD1050 Satellite Modem Board Installation

2.2 Unpacking

The DMD1050 Universal Satellite Modem was carefully packaged to avoid damage and should
arrive complete with the following items for proper installation:

• DMD1050 Modem Board

• Installation and Operation Manual

2.3 Removal and Assembly

The DMD1050 Modem Unit is shipped fully assembled.

CAUTION

Make sure to obey proper ESD practices to avoid damaging the unit.

Carefully unpack the unit and ensure that all of the above items are in the carton. If the available
Power cable and Data cables can be supplied.

2.4 Installation Considerations

User must consider adequate ventilation when installing the DMD1050 into the final package.

The recommended ambient temperature for the modem board should be between 10° and 35°C,

and held constant for best equipment operation. Ventilated air should be clean and relatively dry.
Modem board must have adequate spacing between other products to avoid cross talk or electrical
shorts. Modems should not be placed immediately above a high-heat or EMF Generator to ensure
the output signal integrity and proper receive operation.

Do not install the DMD1050 in an unprotected outdoor location where there is direct contact with
rain, snow, wind or sun. The only tools required for installing the DMD1050 are five (5)
mounting holes. Caution should be exercised when installing the modem board to ensure the
modem board is not bent, warped or compressed to ensure the unit does not get damaged.

2.5 DMD1050 Initial Configuration Check

The DMD1050 is shipped from the factory with preset factory defaults. Upon initial power-up, a
user check should be performed to verify the shipped modem configuration. Refer to Section 4;
User Interfaces, to locate and verify that the following configuration settings are correct:

First, make sure to select the DMD1050 Interface Type (MIL-188-114A or
Ethernet Data Interface) BEFORE you install the mating connectors. Failure
to do this can damage the Data Interface.

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DMD1050 Satellite Modem Board Installation

IMPORTANT

IMPORTANT

2.5.1 Standard DMD1050 Factory Configuration Settings

Implementing Strap Code 26 can set the following modem configuration.
Refer to Table 4-4 for an explanation and tabular listing of available Strap
Codes. The Frequency and Modulator Output Power are set independently of
the strap code.

Modulator:

Data Rate: 2.048 Mbps
Mode: Closed Network
Satellite Framing: None
Scrambler: V.35 (IESS)
Inner FEC: 1/2 Rate Viterbi
Outer FEC: Disabled
Modulation: QPSK

Frequency: 950 MHz
Modulator Output Power: -20 dBm

Demodulator:

Data Rate: 2.048 Mbps
Mode: Closed Network
Satellite Framing: None
Scrambler: V.35 (IESS)
Inner FEC: 1/2 Rate Viterbi
Outer FEC: Disabled
Modulation: QPSK

Frequency: 950 MHz

To lock up the modem, enter ‘IF Loopback Enable’ under the Test Menu, or connect a Loopback
Cable from TX port to RX port.

Using the modem’s loopback capabilities with the Ethernet data interface can cause
undesirable network loops. Before you do any data test with an Ethernet interface,
make sure to use two modems connected back-to-back. If you use one modem and a
loopback, the results will not be as desired.

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DMD1050 Satellite Modem Board Installation

IMPORTANT

2.6 Modulator Checkout

The following descriptions assume that the DMD1050 is installed in a suitable location with
clean, stable DC power. Make sure that DC spikes are not present during initial power up.

2.6.1 Initial Power-Up

Make sure that the modem’s input DC power is clean, stable and free of spikes.
If the input DC power is of poor quality, it will damage the unit .

Before connecting power to the unit, disconnect the transmit output from the
operating ground station equipment. Communication traffic can be disrupted
by connecting power to a unit when the configuration settings are not known
and may be incorrect.

New units are shipped with the transmit carrier set to OFF.

The initial field checkout of the modem can be accomplished from the Web Browser or Terminal
Mode. The Web Browser and Terminal Mode has the advantage of providing full screen access
to all of the modem’s parameters, but requires a separate terminal or computer running a
Terminal Program. The modem is configured with the Web Browser enabled.

2.6.2 M&C Web Browser Setup

The Ethernet M&C Interface requires a standard RJ45 Male connector. The Ethernet Interface is
shipped from the factory in an addressable defaulted condition that allows the user to access the
unit. This condition is identified as IP TEST MODE. .

Boot Modes: IPTEST

IP Address Mask: 255.255.255.000
Modem IP Address: 192.168.0.238
Server IP Address: 192.168.000.101

Router IP Address: 192.168.000.102

Refer to section C & D for proper setup of the Ethernet M&C Interface.

Connect an Ethernet cable between the unit and a computer that has web browser capability.
Access the browser and enter the default web address for the unit.
Refer to Section 4

for a complete description of the GUI Interface operation and parameters.
Refer to Appendix C and Appendix D for proper setup of the TCP-IP interface and Web Browser
Setup.

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DMD1050 Satellite Modem Board Installation

IMPORTANT

2.6.3 M&C Terminal Setup

The initial field checkout of the modem can also be accomplished from the Terminal Mode. The
Terminal Mode has the advantage of providing full screen access to the modem’s parameters, but
requires a separate terminal or computer running a Terminal Program such as Hyper-terminal and
connection to the applicable pins on the M&C connector J1. The recommended terminal setup is
as follows (These settings can be changed via the Web Browser):

Emulation Type: VT-100
Baud Rate: 19.2 K
Data Bits: 8
Parity: No Parity (Fixed)

Web Browser and Terminal Interfaces Reset

If you cannot access the Web Browser or Terminal interface, reset the
interface defaults. To reset the interface defaults, use the shorting plug
(CNRSHUNT). Obey these steps:

1. Make sure the electrical power to the unit is disconnected.

2. Find the JP5 and JP6 connectors.

3. Find pins 1 and 2 on the JP5 and JP6 connectors.

4. Install the CNRSHUNT shorting plug on pins 1 and 2 of JP5 and pins
1 and 2 of JP6.

5. Connect the electrical power to the unit.

6. This will reset the interface defaults.

See Section 3 for more information.

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DMD1050 Satellite Modem Board Installation

2.7 Storage

It is recommended that the unit be stored in its original sealed packing. The unit should be stored
in a dry location where the temperature is stable, away from direct contact with rain, snow, wind,
sun, or anything that may cause damage.

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Chapter 3. Theory of Operation

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d

3.1 DMD1050 Hardware

The DMD1050 is based on a two printed circuit card design. The standard configuration consists
of an L-Band Assembly and a Digital Baseband Assembly. This configuration includes built in
Data interfaces and a number of different software upgrade options. A block diagram of the
DMD1050E is shown in Figure 3-1.

L-Band

IF

Card

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Cable

Digital

Baseban

Car

( Interface & Turbo )

Figure 3-1. DMD1050 Block Diagram

DMD1050 Satellite Modem Board Theory of Operation

3.1.1 DMD1050 L-Band Printed Circuit Card

The L-Band/IF Printed Circuit Card consists of an analog modulation function, an analog
complex down conversion, and two wide-band digital synthesizers. The block diagram of the L­Band Assembly is shown in Figure 3-2.

TxLB

RxLB

Coupler

DCSA

Switch

PDA

Quadrature
Modulator

L-Band

Synthesizer

L-Band

Synthesizer

Quadrature

Demodulator

AGC

LPF

LPF

Demodulator I

Demodulator I Inv.

Demodulator Q

Demodulator Q Inv.

Analog I Inv.

Analog Q

Analog Q Inv.

Analog I

IF Board Connector (40-Pin Header)

In the modulator, analog in-phase (I) and quadrature (Q) signals are generated on the Digital
Baseband Printed Circuit Card, routed to the L-Band Printed Circuit Card, and modulated at the
desired frequency. The L-Band modulated signal is then passed through a microprocessor
controlled variable attenuator providing gain control of the output signal.

In the complex downconverter, the signal for demodulation is amplified and sent through a
variable wideband attenuator for AGC. The gain-controlled signal is then passed through a
complex downconverter to a low IF.

3.1.2 DMD1050 Baseband Processing Printed Circuit Card

The advent of million-plus gate count FPGAs, advanced logic synthesis tools, and DSPs
providing hundreds of MIPs enabled the design of a software configurable modem. Large, fast
FPGAs now provide designers with what is essentially an on the fly programmable ASIC. High
speed, complex digital logic functions that previously could only be implemented in dedicated
integrated circuits are now downloaded from a micro-controller through a serial or peripheral
interface. When a new digital logic function is needed, a new configuration file is loaded into the

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Figure 3-2. L-Band Assembly

DMD1050 Satellite Modem Board Theory of Operation

FPGA. There is no limit to the number of digital logic configurations available to the FPGA,
aside from the amount of Flash memory available to the system microprocessor for storage of
configuration files.

The DMD1050 Baseband Processing Printed Circuit Card provides a flexible architecture that
allows many different modes of terrestrial and satellite framing, various FEC options, digital
voice processing, and several different modulation/demodulation formats. Also included on the
Baseband Printed Circuit Card is a MIL-188-114A/RS-422 synchronous interfaces and a two port
10/100 Ethernet Bridge interface.

A block diagram of the Baseband Processing Card is shown in Figure 3-3.

Ethernet

Terminal

Analog I Unfilter

Analog I Inv Unfilter

Analog Q Unfilter

Analog Q Inv Unfilter

DMD1050 IF Board Connector (40-Pin Header)

DB-25 Sync Data (RS-422, MIL-STD-188-114A) & Ethernet 10Base-T

Filter

Filter

Async (DB-9)

RLLP

Fault

(DB9)

Alias

Alias

Relays

AGC

SPI Bus

Analog I Filter

Analog I Inv Filter

Analog Q Filter

Analog Q Inv Filter

Buffers

Buffers

Buffers

ADC

ADC

Terrestrial Data

Terrestrial Data

Terrestrial Data

SPI Bus

DAC

Rx SAT

SCT/SCTE

Compact

Flash

Loopback

SPI Bus

uProc Bus

SCC2

SMC2

SCC3

GPIO

SPI

uProc

Bus

Boot
Flash

8 Mbx8

SDRAM

2x

256 Mbx16

PCMCIA
Controller

80 MHz

MHz

40

x2

uProcessor

Battery

Xtal

10 Mhz
OCXO

PLL

25 MHz

Xtal

Ethernet

PHY

DAC

Serial

ADC

EEPROM

SCT

LPF

I

Q

Mem Space DMA

Drop DSP

Insert DSP

Mem Space DMA

SCT

LPF

R2R

40 MHz

40 MHz

Modulator

Buf
SRAM

R2R

FPGA

Tx
Clk

Buffers

TPC Codec

Buffers

LPF

Analog I Unfilter

Analog I Inv Unfilter

Analog Q Unfilter

Analog Q Inv Unfilter

Alias

Filter

Alias

Filter

Analog I Filter

Analog I Inv Filter

Analog Q Filter

Analog Q Inv Filter

Figure 3-3. DMD1050 Baseband Processing Card Block Diagram

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Demodulator

FPGA

2x

I

Q

r2r

ADC

ADC

I/Q

TP

DMD1050 Satellite Modem Board Theory of Operation

IMPORTANT

The Baseband Printed Circuit Card also contains the Monitor and Control (M&C) Circuitry
responsible for:

� Programmable part setup and initialization
� Continuous control and adjustment of some functions
� Calibration
� Monitoring fault status
� Calculating and displaying measurements
� Calculations
� User monitor and control interface including front panel and remote
� Unit’s configuration and feature set

The M&C System is based on a powerful microprocessor with a large amount of Flash memory.
Several bus architectures are used to interconnect the M&C to all components of the DMD1050.
Communication to the outside world is done via connections to the remote port, terminal port,
Ethernet port, and alarm ports. The M&C runs off software programmed into its Flash memory.
The memory can be reprogrammed via the Ethernet port to facilitate changes in software.

3.2 DMD1050 Functional Block Diagram

Figure 3-4 represents the DMD1050 Functional Blocks. The modem is shown in a typical
application with customer data, Tx/Rx RF equipment and an antenna.

3.2.1 Baseband Processing

The Baseband Processor performs all of the functions required for an IBS/IDR Framing Unit, a
Reed-Solomon Codec. In addition, the Baseband Processing Section provides for transmit clock
selection and rate adaptation as well as a rate adapter and Plesiochronous/Doppler (PD) Buffer in
the receive direction. A multiplexer is also provided for the SCT Clock Source for Loop Timing
Applications. The transmit and receive paths may be configured independently under processor
control.

The DMD1050 supports IBS & IDR compatible framing modes. Since
the modem does not have all supporting interfaces as stipulated by
IESS308/309, it is not 100% compliant. IBS and IDR framing modes are
supported in a Closed network Mode.

3.2.2 Tx Baseband Processing

The Tx Data and Clock enters the Baseband Processor, passes through a Rate Adapting FIFO and
enters the Framer Processor. In Closed-Net Mode, the data passes through the framer unaltered.
In IDR & IBS framining enabled, it adds the appropriate framing as defined in IESS-308 and

309. The data is then sent to the Reed-Solomon Encoder.

The Reed-Solomon Encoder, encodes the data into Reed-Solomon Blocks. The blocks are then
interleaved and synchronized to the frame pattern as defined by the selected specification (IESS­308, IESS-309, DVB, etc.). After Reed-Solomon Encoding, the composite data and clock are
applied to the BB Loopback Circuit.

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DMD1050 Satellite Modem Board Theory of Operation

DMD1050

Sync

Data

I/O

Ethernet

Data

Interface

Open

Collector

Faults

Asynchronous

Overhead

Terrestrial

Phy

Universal Satellite

Modem

Digital
Baseband
Processor

Tx DSP

Rx DSP

Universal

Modem

MOD

FPGA

DEMOD

FPGA

-6

2 x 10

Reference

1 x 10

Ref. (Opt.)

8

IF Output

950-2050 MHz

0 to -25 dBm

Equipment

IF Input

950-2050 MHz

Equipment

Tx
RF

Antenna

Rx
RF

10 Base-T

Ethernet

LAN

Figure 3-4. DMD1050 Universal Satellite Modem Functional Block Diagram

3.2.3 Rx Baseband Processing

The Receive Processor performs the inverse function of the Tx Processor. Data received from the
satellite passes through the BB Loopback Circuit to the Reed-Solomon Decoder to the Deframer.
The Deframer acquires the IBS/IDR/DVB frame, synchronizes the Reed-Solomon Decoder and
extracts the received data and overhead from the frame structure, placing the data into the PD
Buffer, sending the overhead data to the UIM. The data is extracted from the buffer and is sent to
the UIM. Backward Alarm indications are sent to the M&C Subsystem.

M&C

Terminal

Remote Serial Interfaces

Remote

Port

Power

Regulator

+24 VDC

3.3 Monitor & Control (M&C)

The modems M&C system is connected to most of the circuitry on any board contained in the
modem. These connections provide status on the working condition of the circuitry as well as
providing the data required for the various measurements the modem provides. The M&C

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DMD1050 Satellite Modem Board Theory of Operation

processes this information and generates status indications as well as alarms when necessary.
Detailed status information is available via the modems various user interfaces including the
remote and terminal ports. An external summary fault is available on the RS422 Data interface

The M&C contains a high-performance microprocessor and is responsible for overall command
and control of modem functions. The M&C is constantly monitoring all subsystems of the
modem by performing a periodic poll routine and configures the modem by responding to
commands input to the system. During each poll cycle, the status of each of the subsystems is
collected and reported to each of the external ports. Performance statistics such as Eb/No, buffer
fill %, etc. are compiled. If faults are detected, the M&C will take appropriate actions to
minimize the effect of such faults on the system (refer to the Fault Matrices in Section 6).

The DMD1050 supports the following M&C protocols: These are:

� Terminal Interface (Section 3.3.1)
� Remote Port Interface (Section 3.4)
� Web Browser (Section 3.5)
� M&C Default/Reset Plug Settings (Sections 3.6 and 4.4.4.1)
� SNMP (Simple Network Management Protocol (Refer to TM117 Remote Protocol Manual)

3.3.1 Terminal Port/ES-ES Communications (J1)

J1 functions as the Modem Remote Port, Terminal Port or ES-ES Communications. For
Terminal port application, it supports an asynchronous control protocol. It may be configured to
support either RS-232 or RS-485 signal levels. This port is intended for use in computer-based
remote M&C. All functions of the modem may be monitored and controlled from this port via a
common terminal connected to the Terminal Port. This function is front panel selectable.

This port is also dedicated for ES-ES Communications. The port may be configured for a number
of communications protocols. Overhead data to/from the UIM is routed to/from the
framer/deframer. This port may be configured to support either RS-232 or RS-485 signal levels.
The baud rate and protocol can be selected from the Web Browser.

3.3.2 Terminal Mode Control

The DMD1050 Terminal Mode Control allows the use of an external terminal or computer to
monitor and control the modem from a full screen interactive presentation operated by the modem
itself. No external software is required other than VT-100 Terminal Emulation Software (e.g.
“Procomm” for a computer when used as a terminal. The Control Port is normally used as an
RS–232 Connection to the terminal device. The RS-232 operating parameters can be set using
the modem Front Panel and stored in Non-volatile memory for future use (refer to the Remote
Protocol Manual TM117 for setup and terminal screens).

3.3.3 Modem Terminal Mode Control

The modem can be interactively monitored and controlled in the Terminal Mode, with a full
screen presentation of current settings and status. Programming is accomplished by selecting the
item to be modified and pressing the terminal key of the option number. For example, to change
the transmit data rate, enter ‘33’ at the terminal. The modem will respond by presenting the
options available and requesting input. Two types of input may be requested. If the input is
multiple choice, the desired choice is selected by pressing the ‘Space’ key. When the desired

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DMD1050 Satellite Modem Board Theory of Operation

IMPORTANT

option is displayed, press the ‘Enter’ key to select that option. The other possible input type
requires a numerical input (such as entering a frequency or data rate.
This type of input is followed by pressing the ‘Enter’ or carriage return key. An input can be
aborted at any time by pressing the ‘ESC’ key. Invalid input keys cause an error message to be
displayed on the terminal.

The Terminal Control Mode supports serial baud rates of 150, 300, 1200, 2400, 4800, 9600,
19200, and 38400. The connection must be set for 8 data bits, 1 stop bit and no parity (8,N,1).
Three terminal emulations are supported: VT-100, WYSE 50, and ADDS-VP.

“$” is used for setting the screen when the terminal is used for the first time the non-volatile
memory is reset.

3.3.4 Modem Setup for Terminal Mode

Terminal Mode Communications and Protocol is set from the Web Browser by setting the
“Control Mode” Parameter to “Terminal”, and then setting the “Modem Port”, “Term Baud” and
“Emulation” Parameters as desired. Then a terminal is connected to J1connector. All operating
software for the Terminal Mode is contained within the DMD1050 Modem Internal Control
Software.

A “break” signal on the communications line, pressing “ESC” on the terminal or Power On of the
modem will initiate full screen terminal mode printing and redraw the full screen. The Terminal
Mode displays the present status of all user parameters controlled and read by the processor, and
offers a menu allowing change to any controlled parameter.

The Terminal Mode uses eight “Screens,” each of which have the basic contents of the three
modem monitor and control areas as set in the Front Panel matrix columns. This screen is used
for setting the parameters of the Modulator, Demodulator, Event, Alarm, Latched Alarm, and
Interface Areas.

The Terminal Control Mode is menu-driven and the allowable values for each item number will
be shown. To change an item, type in its number followed by <ENTER>. If the parameter to be
changed requires a numeric value, enter the number followed by <ENTER> If the parameter is
non-numeric, press <SPACE> to cycle through the list of available entries.

Items that do not have ID numbers are Status only and cannot be
changed.

3.3.5 Connecting the Terminal

1. Connect the computer to the DMD1050 Remote Connector (J1) on the board using the
RS-232 Cable.

2. Enable the terminal by selecting Terminal Mode under the Web Browser

3. Verify that your emulation software is set to the following:

8 data bits
no parity

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DMD1050 Satellite Modem Board Theory of Operation

IMPORTANT

IMPORTANT

1 stop bit

3.3.6 Terminal Screens

Refer to the Remote Protocol Manual (TM117) for the terminal screens.

3.4 Modem Remote Communications (RLLP)

The Remote Port located on J1 allows for control and monitoring of parameters and functions via
an RS-232 Serial Interface, or RS-485 for RLLP Protocol. ‘Equipment Remote Mode’ setup can
be entered from the Web Browser interface under the “System” menu. This requires the user to
first set the Remote Port Control to “Remote” then set the Multidrop Address as needed followed
by setting the Remote Interface to RS232 or RS485.

Control and status messages are conveyed between the modem and all subsidiary modems and the
host computer using packetized message blocks in accordance with a proprietary communications
specification. This communication is handled by the Radyne Link Level Protocol (RLLP), which
serves as a protocol ‘wrapper’ for the RM&C data. Complete information on monitor and control
software is contained in the following sections.

3.4.1 RLLP Protocol Structure

The Communications Specification (COMMSPEC) defines the interaction of computer resident
Monitor and Control Software used in satellite earth station equipment such as modems,
redundancy switches, multiplexers, and other ancillary support gear. Communication is bi­directional, and is normally established on one or more full-duplex 9600-baud multi-drop control
buses that conform to EIA Standard RS-485.

Each piece of earth station equipment on a control bus has a unique physical address, which is
assigned during station setup/configuration or prior to shipment. Valid decimal addresses on one
control bus range from 032 through 255 for a total of up to 224 devices per bus. Address 255 of
each control bus is usually reserved for the M&C computer.

Refer to the Remote Protocol Manual (TM117) for the RLLP Protocol.

3.5 Modem Setup for Ethernet M&C (J10)

This port is dedicated for Ethernet Communications supporting SNMP, FTP and Web Browser.
The port is configured for 10 Base-T communications protocols. The Ethernet M&C Interface
requires a standard RJ45 Male connector. The Ethernet Interface is shipped from the factory in
an addressable “BOOT MODE” state that allows the user to access the unit. This “BOOT
MODE” state is set to “IP TEST”.

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