Comtech EF Data OM20 User Manual

OM20

Universal Outdoor Modem

Installation and Operation Manual

IMPORTANT NOTE: The information contained in this document supersedes all previously
published information regarding this product. This manual is subject to change without prior notice.

Part Number MN-OM20 Revision 5

OM20

Universal Outdoor Modem

Installation and Operation Manual

Part Number MN-OM20

Revision 5

October 27, 2009

Copyright © 2009 Comtech EF Data. Al l rights reserv ed. Printed in the USA.

Comtech EF Data, 21 14 Wes t 7th St re et , Tem pe, Ariz on a 85 28 1 USA, 480.333.220 0, FAX: [phone]

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Table of Contents

TABLE OF CONTENTS ............................................................................................................................................. III

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

1.0 OVERVIEW ................................................................................................................................................... 1–1

1.1 OM20 CONFIGURATIONS ............................................................................................................................... 1–2

1.1.1 Features/Options Installed at Time of Order ....................................................................................... 1–3

1.1.2 Software Feature Upgrades ................................................................................................................. 1–3

1.1.3 Future Hardware Options .................................................................................................................... 1–3

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

2.1 INSTALLATION REQUIREMENTS ......................................................................................................................... 2–1

2.2 UNPACKING ................................................................................................................................................. 2–2

2.2.1 Outdoor Modem (OM20) ..................................................................................................................... 2–2

2.3 REMOVAL AND ASSEMBLY ............................................................................................................................... 2–3

2.4 MOUNTING AND WIRING CONSIDERATIONS ....................................................................................................... 2–4

2.4.1 OM20 Mounting Bracket Instructions.................................................................................................. 2–5

2.4.2 OM20 General Antenna Post Mount Diagram..................................................................................... 2–6

2.4.3 OM20 General Antenna Post Mount Diagram..................................................................................... 2–7

2.4.4 OM20 Antenna Feed Arm Mount Diagram .......................................................................................... 2–8

2.4.5 OM20 with External TWTA Amplifier ................................................................................................... 2–9

2.4.6 OM20 Additional Interface Diagrams ................................................................................................ 2–10

CHAPTER 3. OM20 INITIAL CONFIGURATION ............................................................................................... 3–1

3.1 OM20 INITIAL CONFIGURATION CHECK ............................................................................................................ 3–1

3.2 INITIAL CONFIGURATION AND SETUP PROCESS .................................................................................................... 3–3

3.2.1 Initial Power-Up and Configuration Verification .................................................................................. 3–3

3.2.2 M&C Setup (IP Configuration & RS232 Interface) ................................................................................ 3–3

3.3 OM20 VERIFICATION TESTING ........................................................................................................................ 3–4

3.3.1 TX Output Verification Test .................................................................................................................. 3–4

3.3.2 RX Input Verification Test..................................................................................................................... 3–5

3.4 STORAGE AND RESHIPMENT ............................................................................................................................ 3–5

CHAPTER 4. OM20 THEORY OF OPERATION ................................................................................................. 4–1

4.1 OM20 HARDWARE ....................................................................................................................................... 4–1

4.1.1 OM20 L-Band Printed Circuit Card ....................................................................................................... 4–2

4.1.2 OM20 Baseband Processing Printed Circuit Card ................................................................................ 4–3

4.2 OM20 FUNCTIONAL BLOCK DIAGRAM .............................................................................................................. 4–4

4.2.1 Baseband Processing ........................................................................................................................... 4–4

4.2.2 Tx Baseband Processing ....................................................................................................................... 4–5

4.2.3 Rx Baseband Processing ....................................................................................................................... 4–5

4.3 MONITOR & CONTROL (M&C) SUBSYSTEM ....................................................................................................... 4–6

4.3.1 Terminal Port ....................................................................................................................................... 4–7

4.3.2 Modem Remote Communications (RLLP) ............................................................................................. 4–7

4.3.3 Ethernet M&C Port ............................................................................................................................... 4–7

4.3.4 Modem Monitor Status ........................................................................................................................ 4–8

4.4 ASYNC PORT / ES-ES COMMUNICATIONS .......................................................................................................... 4–8

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