Acom 700S User manual

ACOM 700S
1.8-54 MHz
Linear Amplifier
User's Manual
Installation, Operation
and Maintenance
May 2021
OUTSTANDING HF POWER PRODUCTS

User's Manual | ACOM 700S | 1.8-54 MHz Linear Amplifier
Page 2 of 52 | S e c t i o n ABOUT DOCUMENTATION
May 2021
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 700S | 1.8-54 MHz Linear Amplifier
May 2021
S e c t i o n ABOUT DOCUMENTATION | Page 3 of 52
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
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User's Manual | ACOM 700S | 1.8-54 MHz Linear Amplifier
Page 4 of 52 | S e c t i o n ABOUT DOCUMENTATION
May 2021
Title of Documentation
ACOM 700S 1.8-54 MHz Linear Amplifier
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 700S 1.8-54 MHz Linear Amplifier.
Record of Revisions
Description
Release Date
Notes
ACOM 700S User's Manual
-
First edition
ACOM 700S User's Manual
-
Second edition
ACOM 700S User's Manual
17.12.2019
Third edition
ACOM 700S User's Manual
31.05.2021
Fourth 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
© 2021 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.
Published by
ACOM Ltd.
Bulgaria | Bozhurishte 2227
Sofia-Bozhurishte Economic Zone | 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 700S | 1.8-54 MHz Linear Amplifier
May 2021
S e c t i o n ABOUT DOCUMENTATION | Page 5 of 52
Contents
ABOUT DOCUMENTATION ................................................................................................................................ 3
1. GENERAL INFORMATION........................................................................................................................... 8
1.1. Introduction and Description.......................................................................................................... 8
1.2. Owner Assistance............................................................................................................................ 8
1.3. Equipment Supplied........................................................................................................................ 8
1.4. Features........................................................................................................................................... 9
1.5. Safety Considerations, Explicit Definitions.................................................................................... 10
2. INSTALLATION.......................................................................................................................................... 13
2.1. Unpacking and Initial Inspection................................................................................................... 13
2.2. Amplifier Location Selection ......................................................................................................... 13
2.3. Connections................................................................................................................................... 14
2.4. Connecting to External Devices (transceiver, computer, etc.) and User Settings ........................ 18
3. FIRST POWER-ON, CONTROL SYSTEM, AND INITIAL CHECK.................................................................... 20
3.1. Low Energy Standby Mode of the Power Supply.......................................................................... 20
3.2. Front Panel.................................................................................................................................... 20
3.3. Initial Turning On........................................................................................................................... 21
3.4. Basic Screen................................................................................................................................... 21
3.5. Control System - Buttons and Menus ........................................................................................... 23
3.6. Test transmission .......................................................................................................................... 23
4. OPERATION.............................................................................................................................................. 27
4.1. Change of Modes RX/TX and Operate/Stand-by; AUTO OPERATE user setting ........................... 27
4.2. Band Change, Standard and Expanded Frequency Coverage ....................................................... 28
4.3. Operation with an External Antenna Tuner.................................................................................. 29
4.4. Automatic Protection System ....................................................................................................... 30
5. MENUS - SETTINGS AND OPTIONS .......................................................................................................... 32
5.1. Menu AMP MEASURE (Amplifier measurements)........................................................................ 33
5.2. Menu AMP SERVICE (Amplifier Service Functions)....................................................................... 34
5.3. Menu CAT/AUX SETTINGS (Selection of CAT/AUX interface) ....................................................... 35
5.4. Menu USER PREFERENCES ............................................................................................................ 37
5.5. Menu FAULTS LOG ........................................................................................................................ 38
5.6. Menu RESTORE DEFAULT SETTINGS.............................................................................................. 39

User's Manual | ACOM 700S | 1.8-54 MHz Linear Amplifier
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May 2021
6. REMOTE CONTROL .................................................................................................................................. 40
6.1. Remote Control via ACOM eBox ................................................................................................... 40
6.2. Remote Control via RS-232 interface............................................................................................ 40
7. MAINTENANCE ........................................................................................................................................ 41
7.1. Periodic Maintenance ................................................................................................................... 41
7.2. Cleaning......................................................................................................................................... 42
7.3. Fuse Replacement......................................................................................................................... 42
7.4. Using the Fault Codes (signatures) for Diagnostics....................................................................... 44
7.5. Firmware Updates......................................................................................................................... 45
8. SPECIFICATIONS....................................................................................................................................... 46
8.1. Parameters.................................................................................................................................... 46
8.2. Functions....................................................................................................................................... 47
8.3. Storage and Shipment................................................................................................................... 48
8.3.1. Storage Environment....................................................................................................... 48
8.3.2. Shipping Size and Weight ................................................................................................ 48
8.3.3. Transportation................................................................................................................. 48
8.3.4. Returning to the Service Provider ................................................................................... 48
8.4. Information on Disposing and Recycling of Old Electrical and Electronic Equipment.................. 49
NOTES.............................................................................................................................................................. 50
Figures
Figure 2-1 Rear panel - Connections ............................................................................................................... 15
Figure 3-1 Front panel - Controls and Readouts ............................................................................................. 21
Figure 3-2 Basic screen.................................................................................................................................... 22
Figure 4-1 ACOM 04AT Remote Automatic Antenna Tuner and Switch......................................................... 29
Figure 4-2 Appearance of an alarm message .................................................................................................. 30
Figure 5-1 MENU SELECTION........................................................................................................................... 32
Figure 5-2 Menu AMP MEASURE..................................................................................................................... 33
Figure 5-3 Menu AMP SERVICE ....................................................................................................................... 34
Figure 5-4 Menu CAT/AUX SETTINGS.............................................................................................................. 35
Figure 5-5 Menu USER PREFERENCES ............................................................................................................. 37
Figure 5-6 Menu FAULTS LOG ......................................................................................................................... 38

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May 2021
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Figure 5-7 Menu RESTORE DEFAULT SETTINGS............................................................................................... 39
Figure 6-1 ACOM eBox Ethernet Remote Control device ............................................................................... 40
Figure 8-1 Packaging cardboard box ............................................................................................................... 48
Tables
Table 2-1 Signals and pin out of the CAT/AUX connector............................................................................... 18
Table 2-2 Signals and pin out of the RS-232 connector .................................................................................. 19
Table 5-1 Transceiver interface....................................................................................................................... 36

User's Manual | ACOM 700S | 1.8-54 MHz Linear Amplifier
Page 8 of 52 | S e c t i o n GENERAL INFORMATION
May 2021
1. GENERAL INFORMATION
Congratulations on purchasing one of the finest HF 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 700S HF + 6 m solid-state linear power amplifier.
The ACOM 04AT Remote Automatic Antenna Tuner and Switch is designed to work with
our transistor (solid state) amplifier series, including the ACOM 700S (see Section 4.3
Operation with an External Antenna Tuner).
Remote control of ACOM 700S is provided by ACOM eBox Ethernet Remote control device
or RS-232 port (see Section 6 REMOTE CONTROL).
1.2. 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 Economic Zone | 6 Valeri Petrov Str.
GPS coordinates: 42.748616о| 23.209801о
1.3. Equipment Supplied
The ACOM 700S amplifier and this User's Manual are shipped in a cardboard carton.

User's Manual | ACOM 700S | 1.8-54 MHz Linear Amplifier
May 2021
S e c t i o n GENERAL INFORMATION | Page 9 of 52
1.4. Features
•5" high resolution color display (108x65 mm), 800x480 pixels, and 24-bit color.
•The ACOM 700S amplifier uses a rugged LDMOS transistor.
•Compatible with all transceiver models available on the market - does not need any special signals:
"ground on transmit" and less than 40 W of RF drive power is sufficient.
•Broadband input circuit, providing a perfect transceiver load with SWR below 1.2:1 (typically 1.1:1),
without retuning throughout the whole frequency range from 1.8 to 54 MHz.
•The overall operation of ACOM 700S is extremely simplified: the screen menus are intuitive and easy
to follow, no special skill is required from the operator when changing frequency bands.
•Automatic control - when connected to a transceiver with CAT capability, the amplifier will track the
operating frequency, and will change bands accordingly.
•Even if not CAT connected, the amplifier monitors the input signal frequency through the built-in
frequency counter and automatically switches bands.
•Remotely controlled by RS-232 port and via Internet by the ACOM eBox Ethernet Remote Control
device.
•Takes care of itself via continuously working protection circuits in all modes.
•The operator can monitor numerically more than 10 parameters of the amplifier in operation.
•Easy maintenance - detailed data (55 parameters) about each of the last 28 hard-fault protection trips
is stored in the amplifier's non-volatile memory.
•Convenient for expeditions and field operation due to the extremely compact and lightweight
construction and the built-in switching-mode power supply (SMPS).
•SMPS operates with extended mains voltage range of 100-240 VAC, with no internal switch over. The
consumed current is purely sinusoidal, Power Factor Corrected (PFC) and inrush limited. This makes
the operation from unstable mains and generators easy and trouble-free.
•Perfect electromagnetic compatibility (EMC) with both highly sensitive devices and the powerful
devices in the radio station (receivers, computers, other amplifiers) exceeding the standard EMC
requirements due to the used PFC and built-in radio-frequency filters.

User's Manual | ACOM 700S | 1.8-54 MHz Linear Amplifier
Page 10 of 52 | S e c t i o n GENERAL INFORMATION
May 2021
1.5. Safety Considerations, Explicit Definitions
The ACOM 700S linear amplifier is a Safety Class I unit regarding protection against electric shock. The third
grounding lead of its mains cord (which is colored yellow with two green stripes) and the ground stud on
the rear panel of the amplifier (marked GND, see Figure 2-1 Rear panel - Connections) must be connected to
the station's grounding system for safe operation.
The amplifier is designed to meet international safety standards and complies with CE safety and
electromagnetic compatibility requirements, as well as FCC regulations.
This User's Manual contains information, warnings (signal words Danger, Warning, Caution and Notice) and
instructions, related to hazards, that should be followed by the user in order to ensure safe operation and
to keep the amplifier in a safe working condition at all times.
The EXPLICIT DEFINITIONS described below apply to this User's Manual:
DANGER
These notes call attention to a procedure or instructions which, if not correctly
performed, will result in serious personal injuries and even death.
WARNING
These notes call attention to a procedure or instructions which, if not correctly
performed, could result in serious personal injuries and even death.
CAUTION
These notes call attention to a procedure or instructions which, if not correctly
performed, could result in minor or moderate personal injuries.
NOTICE
These notes call attention to a procedure or instructions which, if not correctly
performed, could result in property damage or equipment damage not exclusively to
the amplifier but also to connected equipment.