AOI Quantum12 Operating instructions

13139 Jess Pirtle Boulevard, Sugar Land, TX 77478 | T: 281.295.1800
Quantum12 1.2GHz System Amplifier
INSTALLATION AND OPERATION GUIDE

QUANTUM12 1.2GHz SYSTEM AMPLIFIER | Installation and Operation Guide
For Your Safety
2
For Your Safety

QUANTUM12 1.2GHz SYSTEM AMPLIFIER | Installation and Operation Guide
For Your Safety
3
EXPLANATION OF WARNING AND CAUTION ICONS
Avoid personal injury and product damage! Do not proceed beyond any symbol until you fully
understand the indicated conditions.
The following warning and caution icons alert you to important information about the safe operation of
this product:
You may find this symbol in the document that accompanies this
product. This symbol indicates important operating or maintenance
instructions.
You may find this symbol affixed to the product. This symbol
indicates a live terminal where a dangerous voltage may be
present; the tip of the flash points to the terminal device.
You may find this symbol affixed to the product. This symbol
indicates a protective ground terminal.
You may find this symbol affixed to the product. This symbol
indicates a chassis terminal (normally used for equipotential
bonding).
You may find this symbol affixed to the product. This symbol
warns of a potentially hot surface.
You may find this symbol affixed to the product and in this
document. This symbol indicates an infrared laser that transmits
intensity-modulated light and emits invisible laser radiation or an
LED that transmits intensity-modulated light.
IMPORTANT
Please read this entire guide. If this guide provides installation or operation instructions, give particular
attention to all safety statements included in this guide.

QUANTUM12 1.2GHz SYSTEM AMPLIFIER | Installation and Operation Guide
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Notices
Notices

QUANTUM12 1.2GHz SYSTEM AMPLIFIER | Installation and Operation Guide
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Notices
TRADEMARK ACKNOWLEDGMENTS
AOI, the AOI logo, Applied Optoelectronics, the AOI logo, and Quantum Bandwidth are
trademarks or registered trademarks of Applied Optoelectronics, Inc. and / or its affiliates in the
U.S. and certain other countries.
All other trademarks mentioned in this document are the property of their respective
owners.
PUBLICATION DISCLAIMER
Applied Optoelectronics, Inc., assumes no responsibility for errors or omissions that may appear in this
publication. We reserve the right to change this publication at any time without notice. This document
is not to be construed as conferring by implication, estoppel, or otherwise any license or right under
any copyright or patent, whether or not the use of any information in this document employs an invention
claimed in any existing or later issued patent.
COPYRIGHT
©2024 Applied Optoelectronics, Inc. All rights reserved. Printed in the United States of America.
Information in this publication is subject to change without notice. No part of this publication may be
reproduced or transmitted in any form, by photocopy, microfilm, xerography, or any other means, or
incorporated into any information retrieval system, electronic or mechanical, for any purpose, without
the express permission of Applied Optoelectronics, Inc

QUANTUM12 1.2GHz SYSTEM AMPLIFIER | Installation and Operation Guide
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Table of Contents
Table of Contents
FOR YOUR SAFETY ................................................................................................... 2
NOTICES .................................................................................................................... 4
IMPORTANT SAFETY INSTRUCTIONS .................................................................... 10
1. INTRODUCTION ............................................................................................ 18
Description ..................................................................................................................................... 20
Components ............................................................................................................................................................ 20
Quantum12 Amplifier Characteristics ....................................................................................................................... 20
Power Supply........................................................................................................................................................... 21
Input and Output Ports............................................................................................................................................. 21
Configuration ........................................................................................................................................................... 22
Test Points ............................................................................................................................................................... 22
AC Shunt Power Directors ....................................................................................................................................... 22
Accessories ............................................................................................................................................................. 22
Ordering Information ................................................................................................................................................ 22
Illustrations ..................................................................................................................................... 23
System Amplifier Test Points .................................................................................................................................... 23
High Gain Dual Accessories..................................................................................................................................... 23
High Gain Balanced Triple Accessories.................................................................................................................... 24
Block Diagrams .............................................................................................................................. 25
High Gain Dual ........................................................................................................................................................ 25
High Gain Balanced Triple ....................................................................................................................................... 25
2. INSTALLATION AND CONFIGURATION ........................................................ 26
Before You Begin ........................................................................................................................... 28
Required Tools......................................................................................................................................................... 28
Torque Specifications............................................................................................................................................... 28
Amplifier Module Cover............................................................................................................................................ 29
Module and Housing Compatibility ........................................................................................................................... 29
Housing Dimensions ................................................................................................................................................ 29
Opening the Amplifier Housing ...................................................................................................... 30
To Open the Amplifier Housing................................................................................................................................. 30
Upgrading Existing Housing Seizures............................................................................................ 31

QUANTUM12 1.2GHz SYSTEM AMPLIFIER | Installation and Operation Guide
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Table of Contents
To Install the New Housing Seizures ........................................................................................................................ 31
Upgrading an Existing Housing Lid................................................................................................ 32
To Install the New Housing Lid ................................................................................................................................. 32
Installing the Power Supply............................................................................................................ 34
To Install the Power Supply Module ......................................................................................................................... 34
To Set the AC Undervoltage Lockout Selector.......................................................................................................... 35
Attaching the Coaxial Connectors.................................................................................................. 37
To Trim the Center Conductor .................................................................................................................................. 37
To Connect the Coaxial Cable Pin Connector to the Amplifier Housing..................................................................... 37
Installing the Housing..................................................................................................................... 39
To Install the Housing on a Strand (Aerial) ............................................................................................................... 39
To Install the Housing in a Pedestal ......................................................................................................................... 40
Installing Accessories..................................................................................................................... 41
To Install Attenuator Pads ........................................................................................................................................ 41
To Install Equalizers ................................................................................................................................................. 42
To Replace the Crowbar Surge Protector ................................................................................................................. 43
To Replace the Diplexer ........................................................................................................................................... 44
To Replace the Low Pass Filter Trim (LPFT) ............................................................................................................ 45
To Install the Plug-in Signal Director (High Gain Dual Only) ..................................................................................... 46
Installing the Amplifier Module ....................................................................................................... 48
To Install the Amplifier Module.................................................................................................................................. 48
Removing the Amplifier Module from the Housing......................................................................... 51
To Remove the Amplifier Module.............................................................................................................................. 51
Removing and Installing AC Shunt Power Directors...................................................................... 53
To Remove and Install AC Shunt Power Directors.................................................................................................... 53
Closing the Amplifier Housing ........................................................................................................ 55
To Close the Amplifier Housing ................................................................................................................................ 55
Torquing Sequence .................................................................................................................................................. 55
3. BALANCING AND SETUP .............................................................................. 56
Preparing for Forward Path Balancing........................................................................................... 58
Understanding Switch S1 Functions......................................................................................................................... 58
To Verify the Input Signal Level ................................................................................................................................ 61
Balancing the Forward Path........................................................................................................... 63

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Table of Contents
To Select the Forward Path Balancing Procedure .................................................................................................... 63
Forward Path Balancing for AGC Stations Using Manual Setup Mode ..................................................................... 63
Forward Path Balancing for AGC Stations Using Thermal Setup Mode .................................................................... 70
Forward Path Balancing for Thermal Stations Using Amplifier Only Compensation Mode ........................................ 76
Forward Path Balancing for Thermal Stations Using Amplifier and Coax Compensation Mode................................. 78
Forward Path Balancing Using Trim Networks ......................................................................................................... 81
Balancing the Reverse Path .......................................................................................................... 83
About Reverse Path Balancing ................................................................................................................................ 83
To Prepare the Amplifier for Reverse Path Balancing ............................................................................................... 84
To Calculate the Proper RF Signal Level.................................................................................................................. 85
To Complete Reverse Path Balancing ...................................................................................................................... 87
4. TROUBLESHOOTING .................................................................................... 89
Equipment ...................................................................................................................................... 91
No AC Power.................................................................................................................................. 92
No AC Power Troubleshooting Table........................................................................................................................ 92
No DC Power ................................................................................................................................. 94
No DC Power Troubleshooting Table........................................................................................................................ 94
No Forward RF Signal.................................................................................................................... 95
No Forward RF Signal Troubleshooting Table .......................................................................................................... 95
Low or Degraded Forward RF Signal ............................................................................................ 96
Low or Degraded Forward RF Signal Troubleshooting Table.................................................................................... 96
No Reverse RF Signal ................................................................................................................... 97
No Reverse RF Signal Troubleshooting Table .......................................................................................................... 97
Low or Degraded Reverse RF Signal ............................................................................................ 98
Low or Degraded Reverse RF Signal Troubleshooting Table.................................................................................... 98
5. CUSTOMER SUPPORT INFORMATION ........................................................ 100
APPENDIX A: TECHNICAL INFORMATION ............................................................ 102
“Linear” Tilt Charts........................................................................................................................ 104
Amplifier Output “Linear” Tilt Chart for 1.2 GHz ...................................................................................................... 104
Amplifier Output “Linear” Tilt Chart for 1 GHz......................................................................................................... 104
Amplifier Output “Linear” Tilt Chart for 870 MHz..................................................................................................... 105
Forward Cable Equalizer Charts.................................................................................................. 106
1.2 GHz Forward Cable Equalizer Loss Chart ........................................................................................................ 106

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Table of Contents
1 GHz Forward Cable Equalizer Loss Chart........................................................................................................... 107
870 MHz Forward Cable Equalizer Loss Chart....................................................................................................... 108
Reverse Cable Equalizer Charts.................................................................................................. 109
42 MHz and 40 MHz Reverse Cable Equalizer Loss Chart..................................................................................... 109
42 MHz and 40 MHz Thermal Reverse Cable Equalizer Loss at 25°C Ambient .......................................................110
Inverse Cable Equalizer Charts ................................................................................................... 111
1.2 GHz Forward Inverse Cable Equalizer Loss Chart ............................................................................................ 111
1 GHz / 870 MHz Forward Inverse Cable Equalizer Loss Chart ..............................................................................112
GLOSSARY............................................................................................................. 113

QUANTUM12 1.2GHz SYSTEM AMPLIFIER | Installation and Operation Guide
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Important Safety Instructions
Important Safety
Instructions