Acom 2020S User manual

ACOM 2020S
1.8-54 MHz
Linear Power Amplifier
with Touch-Screen Remote Control
User's Manual
Installation, Operation
and Maintenance
June 2022
OUTSTANDING HF POWER PRODUCTS

User's Manual | ACOM 2020S | 1.8-54 MHz Linear Power Amplifier
Page 2 of 76 | S e c t i o n ABOUT DOCUMENTATION
June 2022
This manual is for electronic distribution mainly.
If you have it on paper and you no longer need it, please, recycle it!
The latest versions of our User's Manuals are available at
www.acom-bg.com

User's Manual | ACOM 2020S | 1.8-54 MHz Linear Power Amplifier
June 2022
Sec t i o n ABOUT DOCUMENTATION | Page 3 of 76
ABOUT DOCUMENTATION
All ACOM documentation (including manuals, brochures, specifications, descriptions, presentations, video
materials, etc.) are based on the latest available information at the time of creation of our documents.
As we always strive to constantly improve and update our products, ALL PRODUCTS, PRODUCT
SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE. ACOM reserves the right to make changes and
improvements at any time without further notice or obligation to notify any person or organization of such
revisions or changes, made in order to improve the reliability, function, quality and design, and/or
performance of the ACOM products and services.
Further, this User's Manual is provided AS IS and ACOM shall not be liable for possible errors contained
herein.
This manual supersedes all previous editions, which thereby become invalid.
The cover images used in the manual are illustrative only.
We are continuously striving to improve our documentation, but nobody is perfect.
And our documentation is not an exception of this rule.
Have you found any errors or would you like to suggest changes in our documentation?
Please help us by sending your suggestions to the following e-mail address:
[e-mail]
The latest versions of our User's Manuals are available at
www.acom-bg.com
We highly recommend you to use this manual in electronic form as PDF-file instead of printed version. The
PDF-file is easy to read on any computer, tablet, smart phone or other similar device. In the PDF file you will
find the necessary information very fast due to context-oriented links (marked in orange) inside the file,
including context-linked Table of Content.
To open PDF-files you can use any free PDF viewer, for example:
•Adobe Acrobat Reader DC (https://get.adobe.com/reader);
•Foxit Reader (https://www.foxitsoftware.com/pdf-reader);
•Your web browser. Web browsers like Google Chrome, Firefox and Safari all have integrated
PDF readers.

User's Manual | ACOM 2020S | 1.8-54 MHz Linear Power Amplifier
Page 4 of 76 | S e c t i o n ABOUT DOCUMENTATION
June 2022
Title of Documentation
ACOM 2020S 1.8-54 MHz Linear Power Amplifier
with Touch-Screen Remote Control
User's Manual
Installation, Operation and Maintenance
Type of Documentation
User's Manual
Purpose of Documentation
This manual explains Installation, Operation and Maintenance of the
ACOM 2020S 1.8-54 MHz linear power amplifier.
Record of Revisions
Description
Release Date
Notes
ACOM 2020S User's Manual
30.06.2022
First edition, R01
Validity
The specified data is for product description purposes only and may not be
deemed to be guaranteed unless expressly confirmed in the contract. All
rights are reserved with respect to the content of this manual and the
availability of the product.
Copyrights
© 2022 ACOM Ltd.
Copying this document, giving it to others and the use or communication
of the contents thereof without express authority, are forbidden.
Offenders will be held liable for infringement of any intellectual property
of ACOM Ltd. and all damages which may rise as a result.
Trademarks
ICOM, KENWOOD, YAESU, ELECRAFT, and other product names or brands
mentioned in this documentation are either registered trademarks or
trademarks of their respective holders.
Published by
ACOM Ltd.
Bulgaria | Bozhurishte 2227
Sofia-Bozhurishte Industrial Park | 6 Valeri Petrov Str.
GPS coordinates: 42.748616о| 23.209801о
Web: www.acom-bg.com
E-mail: [e-mail]
Note
This manual has been printed on chlorine-free bleached paper.

User's Manual | ACOM 2020S | 1.8-54 MHz Linear Power Amplifier
June 2022
Sec t i o n ABOUT DOCUMENTATION | Page 5 of 76
Contents
ABOUT DOCUMENTATION ................................................................................................................................ 3
1. GENERAL INFORMATION........................................................................................................................... 9
1.1. Introduction and Description.......................................................................................................... 9
1.2. Product History and Documentation Validity ............................................................................... 10
1.3. Owner Assistance.......................................................................................................................... 10
1.4. Equipment Supplied...................................................................................................................... 11
1.5. Features......................................................................................................................................... 12
1.6. Safety Considerations, Explicit Definitions.................................................................................... 13
2. INSTALLATION.......................................................................................................................................... 16
2.1. Unpacking and Initial Inspection................................................................................................... 16
2.2. Line Voltage Selection................................................................................................................... 16
2.3. Amplifier Location Selection ......................................................................................................... 16
2.4. Connections................................................................................................................................... 18
2.4.1. Connections on Amplifier rear panel............................................................................... 18
2.4.2. Connections on RCU rear panel....................................................................................... 22
2.5. Connecting to External Devices (transceiver, computer, etc.)...................................................... 24
3. FIRST POWER-ON, CONTROL SYSTEM, AND INITIAL CHECK.................................................................... 28
3.1. Low Energy STANDBY Mode of the Power Supply........................................................................ 28
3.2. RCU Remote Control Unit ............................................................................................................. 29
3.3. Initial Turning On........................................................................................................................... 30
3.4. Basic Screen................................................................................................................................... 30
3.5. Control System - Buttons and Menus ........................................................................................... 33
3.6. Test Transmission.......................................................................................................................... 34
4. OPERATION.............................................................................................................................................. 38
4.1. Change of Modes RX/TX and OPERATE/STANDBY; AUTO OPERATE User Settings ...................... 38
4.2. Band Change, Standard and Expanded Frequency Coverage....................................................... 39
4.3. Automatic Protection System ....................................................................................................... 40
5. MENUS - SETTINGS AND SERVICE FUNCTIONS........................................................................................ 42
5.1. Menu USER PREFERENCES ............................................................................................................ 43
5.2. Menu AMP SERVICE ...................................................................................................................... 46
5.3. Menu CAT SETTINGS ..................................................................................................................... 47
5.4. Menu FAULTS LOG ........................................................................................................................ 49
5.5. Menu RESTORE DEFAULT SETTINGS.............................................................................................. 50

User's Manual | ACOM 2020S | 1.8-54 MHz Linear Power Amplifier
Page 6 of 76 | S e c t i o n ABOUT DOCUMENTATION
June 2022
5.6. Menu NETWORK SETTINGS........................................................................................................... 51
5.7. Menu AMP UPDATE ...................................................................................................................... 53
5.8. HELP information .......................................................................................................................... 53
6. REMOTE CONTROL .................................................................................................................................. 54
6.1. Remote Control via Ethernet Interfaces ....................................................................................... 54
6.2. Remote Control via RS-232 interface............................................................................................ 55
7. MAINTENANCE ........................................................................................................................................ 56
7.1. Periodic Maintenance ................................................................................................................... 56
7.2. Cleaning......................................................................................................................................... 56
7.3. Fuse Replacement......................................................................................................................... 57
7.4. Using the Fault Codes (signatures) for Diagnostics....................................................................... 58
7.5. Firmware ....................................................................................................................................... 59
7.5.1. Firmware Versions........................................................................................................... 59
7.5.2. Prequistments.................................................................................................................. 59
7.5.3. Firmware update of amplifier ACOM 2020S (unit only).................................................. 60
7.5.4. Firmware update of Remote Control Unit model R05 .................................................... 61
8. SPECIFICATIONS....................................................................................................................................... 62
8.1. Parameters.................................................................................................................................... 62
8.2. Functions....................................................................................................................................... 64
8.3. Regulatory Requirements ............................................................................................................. 64
8.4. Storage and Shipment................................................................................................................... 68
8.4.1. Storage Environment....................................................................................................... 68
8.4.2. Shipping Size and Weight ................................................................................................ 68
8.4.3. Transportation................................................................................................................. 68
8.4.4. Returning to the Service Provider ................................................................................... 69
8.5. Information on Disposing and Recycling of Old Electrical and Electronic Equipment.................. 71
NOTES.............................................................................................................................................................. 72

User's Manual | ACOM 2020S | 1.8-54 MHz Linear Power Amplifier
June 2022
Sec t i o n ABOUT DOCUMENTATION | Page 7 of 76
Figures
Figure 2-1 | RCU model R05 - Front panel with Touch screen........................................................................ 17
Figure 2-2 | Amplifier - Front view.................................................................................................................. 17
Figure 2-3 | Amplifier rear panel - Connections.............................................................................................. 18
Figure 2-4 | ACOM 2020S - RCU R05 connection cable .................................................................................. 21
Figure 2-5 | Power supply cable...................................................................................................................... 22
Figure 2-6 | RCU model R05 rear panel........................................................................................................... 22
Figure 3-1 | Amplifier and RCU Front panels - Controls and Readouts........................................................... 28
Figure 3-2 | Basic screen ................................................................................................................................. 30
Figure 3-3 | Basic screen - Operating values................................................................................................... 31
Figure 4-1 | Appearance of an alarm message ............................................................................................... 40
Figure 5-1 | MENU SELECTION........................................................................................................................ 42
Figure 5-2 | Menu USER PREFERENCES........................................................................................................... 43
Figure 5-3 | Virtual keyboard .......................................................................................................................... 44
Figure 5-4 | Classic skin interface - time proven and ergonomic.................................................................... 45
Figure 5-5 | Dark skin interface - sleek and elegant........................................................................................ 45
Figure 5-6 | Menu AMP SERVICE..................................................................................................................... 46
Figure 5-7 | Menu CAT SETTINGS.................................................................................................................... 47
Figure 5-8 | Menu FAULTS LOG....................................................................................................................... 49
Figure 5-9 | Menu RESTORE DEFAULT SETTINGS............................................................................................ 50
Figure 5-10 | Menu NETWORK SETTINGS ....................................................................................................... 51
Figure 5-11 | Virtual keypad............................................................................................................................ 52
Figure 5-12 | HELP information....................................................................................................................... 53
Figure 6-1 | Web-interface running in web browser on a PC ......................................................................... 54
Figure 6-2 | Web-interface running in web browser on a smart phone......................................................... 55
Figure 7-1 | ACOM Terminal S screenshot...................................................................................................... 60
Figure 8-1 | Packaging cardboard box............................................................................................................. 68

User's Manual | ACOM 2020S | 1.8-54 MHz Linear Power Amplifier
Page 8 of 76 | S e c t i o n ABOUT DOCUMENTATION
June 2022
Tables
Table 1-1 | Production versions history.......................................................................................................... 10
Table 1-2 | Package contents.......................................................................................................................... 11
Table 2-1 | ACOM 2020S - RCU R05 connection cable wiring......................................................................... 21
Table 2-2 | Signals and pin out of the CAT/AUX connector ............................................................................ 25
Table 2-3 | Signals and pin out of the RCU's SERIAL connector...................................................................... 25
Table 2-4 | Signals and pin out of the amplifier's RS-232 connector.............................................................. 26
Table 2-5 | Signals and pin out of the RCU's LAN socket ................................................................................ 26
Table 2-6 | Signals and pin out of the RCU's USB type A connector............................................................... 27
Table 5-1 | Transceiver interface type and command set selection............................................................... 48
Table 7-1 | Firmware versions history ............................................................................................................ 59
Table 8-1 | RF exposure distance chart........................................................................................................... 66
Table 8-2 | Different antenna gain chart ........................................................................................................ 67

User's Manual | ACOM 2020S | 1.8-54 MHz Linear Power Amplifier
June 2022
Sec t i o n GENERAL INFORMATION | Page 9 of 76
1. GENERAL INFORMATION
Congratulations on purchasing one of the finest solid-state 1.8-54 MHz linear amplifiers in the world today.
ACOM is pleased that you have chosen one of our products, and we will endeavor to provide you with the
information and support you need to enjoy your purchase for many years.
We urge you to read all of the following materials before you embark on operating your new amplifier.
1.1. Introduction and Description
This manual explains:
•Installation
•Operation and
•Maintenance
of the ACOM 2020S solid-state linear power amplifier.
The ACOM 2020S is a state-of-the art 1500 W heavy-duty, solid-state linear amplifier, covering all amateur
bands from 1.8 to 54 MHz.
The amplifier employs two powerful modules in power splitting/combining technique which is well time-
proven in high-power commercial applications to provide sufficient output headroom. Thanks to input and
output ports isolation from each other, the intermodulation is reduced, and SWR toughness, self-excitation
resistance, and reliability are improved.
It features a Remote Control Unit model R05 (abbr. RCU hereinafter) with the operating information shown
on a multi-functional, high resolution color touch screen. All indicators and controls (except the primary
mains switch and power indicator) are accessible via the touch screen RCU, as well as, all command input to
the RCU is menu-driven.
As standard, the ACOM 2020S is equipped with Ethernet interface facilitating its usage in Remotely
Operated Stations.

User's Manual | ACOM 2020S | 1.8-54 MHz Linear Power Amplifier
Page 10 of 76 | S e c t i o n GENERAL INFORMATION
June 2022
1.2. Product History and Documentation Validity
The ACOM 2020S amplifier serial production started in April 2022.
This manual refers to the ACOM 2020S amplifiers and describes the operating possibilities of all amplifiers
produced till the publishing date of this manual.
This manual is valid till a new manual is issued.
Table 1-1 | Production versions history
Production Version
Release Date
Notes
04.2022
Basic design;
Table 1-1 | Production versions history
1.3. Owner Assistance
If assistance is needed, you should contact your local dealerfirst. If necessary, your dealer will contact ACOM
for additional guidance.
If you still have an issue you need to discuss with one of ACOM's specialists, the contact information is as
follows:
ACOM Ltd.
E-mail: [e-mail]
Bulgaria | Bozhurishte 2227
Sofia-Bozhurishte Industrial Park | 6 Valeri Petrov Str.
GPS coordinates: 42.748616о| 23.209801о