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Summary of Contents for Acom 1200S
- Page 1 ACOM 1200S 1.8-54 MHz Linear Power Amplifier User's Manual Installation, Operation and Maintenance OUTSTANDING HF POWER PRODUCTS August 2021...
- Page 2 User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier 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...
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Page 3: About Documentation
ACOM products and services. Further, this User's Manual is provided AS IS and ACOM shall not be liable for possible errors contained herein. - Page 4 User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier Title of Documentation ACOM 1200S 1.8-54 MHz Linear Power 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 1200S 1.8-54 MHz Linear Power Amplifier.
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Page 5: Table Of Contents
User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier Contents ABOUT DOCUMENTATION ..........................3 GENERAL INFORMATION ........................... 8 1.1. Introduction and Description ......................8 1.2. Owner Assistance ..........................9 1.3. Equipment Supplied ........................9 1.4. Features ............................10 1.5. - Page 6 User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier 5.5. Menu FAULTS LOG ........................42 5.6. Menu RESTORE DEFAULT SETTINGS....................43 REMOTE CONTROL ..........................44 6.1. Remote Control via ACOM eBox ....................44 6.2. Remote Control via RS-232 interface .................... 44 MAINTENANCE ............................
- Page 7 User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier Figure 4-2 Amplifier screen with ACOM 04AT antenna tuner installed ............33 Figure 4-3 Appearance of an alarm message ....................34 Figure 5-1 MENU SELECTION ........................... 36 Figure 5-2 Menu AMP MEASURE ........................37 Figure 5-3 Menu AMP SERVICE ........................
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Page 8: 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. -
Page 9: Owner Assistance
If assistance is needed, you should contact your local dealer first. 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. -
Page 10: Features
Features 1.4. Easy to operate • The overall operation of ACOM 1200S is extremely simplified: the screen menus are intuitive and easy to follow, no special skill is required from the operator when changing frequency bands. User-friendly automatic control •... -
Page 11: Safety Considerations, Explicit Definitions
Safety Considerations, Explicit Definitions 1.5. The ACOM 1200S linear power 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... - Page 12 User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier Information notes described below apply to this User's Manual: These notes highlight operating procedures or practices that may improve equipment reliability and/or personnel performance, or to emphasize a concept.
- Page 13 User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier PRECAUTIONS: DANGER Both the mains voltage and the high DC voltage up to 500 V inside the ACOM 1200S amplifier are LETHAL! For your safety, pull the amplifier power plug out of the mains wall outlet and WAIT AT LEAST 3 minutes EACH TIME BEFORE you remove the cover of the amplifier.
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Page 14: Installation
Power Factor Corrected (PFC) and inrush limited. This makes the operation from unstable mains and generators easy and trouble free. Thanks to the built-in SMPS, the ACOM 1200S has no mains line voltage selector to take care of! Page 14 of 60 | S e c t i o n INSTALLATION... -
Page 15: Amplifier Location Selection
NOTICE The ACOM 1200S is forced air cooled. Keep a minimum clearance distance of 10 cm (4 inches) to any other devices or objects. The exhaust air can reach 65... -
Page 16: Connections
User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier Connections 2.4. Please, see Figure 2-2 Rear panel - Connections Connection to your station must be accomplished in the order described below, before you apply mains voltage to the amplifier. - Page 17 User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier GND stud First, connect the wing-nut grounding stud of the amplifier (on the rear panel, marked GND) to the station's grounding system (see , Pos. (a)). Figure 2-2 Rear panel - Connections...
- Page 18 , Pos. (c)) of the amplifier. Figure 2-2 Rear panel - Connections ACOM 1200S will operate normally with KEY-OUT unconnected if your transceiver has no such input. Transceiver producers give different names to this input and they are for instance TX-INHIBIT, MUTE, LINEAR, etc.
- Page 19 User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier Main fuses Please, see , Pos. (f). Figure 2-2 Rear panel - Connections NOTICE If occasion should require replacement of the mains fuses, replace them as described in Section 7.3 Fuse Replacement...
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Page 20: Connecting To External Devices (Transceiver, Computer, Etc.) And User Settings
Table 5-1 Transceiver interface type and command set selection Figure 5-4 Menu CAT/AUX SETTINGS Most of the modern transceivers can be connected by CAT to the ACOM 1200S. This will allow the amplifier to track the transceiver frequency without any transmission and change the bands automatically when in OPERATE mode. -
Page 21: Table 2-2 Signals And Pin Out Of The Rs-232 Connector
User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier RS-232 interface connector Please, see , Pos. (2). Figure 2-2 Rear panel - Connections This connector may remain unused until you decide to control the amplifier remotely. Please, see Section 6.1 Remote Control via ACOM eBox... -
Page 22: First Power-On, Control System, And Initial Check
User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier 3. FIRST POWER-ON, CONTROL SYSTEM, AND INITIAL CHECK NOTICE Do not turn the amplifier on for at least 2 hours after unpacking it in the room where it will be used. Pay particular attention when you move it from a very cold into a warm place - condensation is likely and this could result in damage to the high voltage circuits. -
Page 23: Front Panel
User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier Front Panel 3.2. POWER button Please, see , Pos. (a). Figure 3-1 Front panel - Controls and Readouts When the rear panel mains rocker switch is turned on, push and hold the POWER button for 1-2 seconds to start the amplifier up. -
Page 24: Basic Screen
User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier Basic Screen 3.4. The following information areas are to be distinguished on the basic screen: Information area for the frequency band Please, see , Pos. (a). Figure 3-2 Basic screen without ACOM 04AT antenna tuner assigned The edges of the currently selected BAND are displayed. -
Page 25: Control System - Buttons And Menus
User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier RX/TX indicator Please, see , Pos. (d). Figure 3-2 Basic screen without ACOM 04AT antenna tuner assigned RX/TX indicator reads the request for transmit (KEY-IN input). The RX indication is green and the TX is red. -
Page 26: Test Transmission
• ascending or descending order. When ACOM 04AT tuner is assigned, BAND buttons are called SEGMENT and change the tuner frequency segments (see Section 4.3 Operation with an External Antenna Tuner The right-most button MENU provides access to the amplifier's settings and service functions. - Page 27 User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier Check again whether the power control is set at minimum; • Check whether the frequency is within the operating range of the selected antenna; • Check the good working order of the coaxial cables, connectors, and feed lines from the •...
- Page 28 User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier RX mode must change to TX; • The reflected power must read below 20 W; • The forward power must read between 20 and 150 W with minimum drive power from the •...
- Page 29 User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier Add current chokes on the coaxial feeders; • Place as far away as possible (also by height) the radiating elements of antennas from the • premises, where the affected devices are located. In this sense, asymmetrical antennas...
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Page 30: Operation
User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier 4. OPERATION Change of Modes RX/TX and OPERATE/STANDBY; AUTO OPERATE User Setting 4.1. STANDBY mode In STANDBY mode, as well as when the amplifier is not powered, receiving and transmitting (no more than 200 W) with the transceiver is done via RF bypass between RF INPUT and RF OUTPUT of the amplifier. -
Page 31: Band Change, Standard And Expanded Frequency Coverage
User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier AUTO OPERATE user settings AUTO OPERATE user setting can be turned on/off by the operator in the USER PREFERENCES menu (see Section ) or by a remote control 5.4 Menu USER PREFERENCES Figure 5-5 Menu USER PREFERENCES command. -
Page 32: Operation With An External Antenna Tuner
The ACOM 04AT can be installed both in the shack and in a remote location (even out in the open, close to the antennas). It can be distanced up to 100 m (330 ft) from the amplifier, using a single coaxial cable. -
Page 33: Automatic Protection System
Figure 4-2 Amplifier screen with ACOM 04AT antenna tuner installed Figure 4-2 Amplifier screen with ACOM 04AT antenna tuner installed The operation of ACOM 1200S with ACOM 04AT is described in detail in the ACOM 04AT User's Manual (available for download at www.acom-bg.com... -
Page 34: Figure 4-3 Appearance Of An Alarm Message
User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier In the event a parameter limit is violated, the amplifier will assess the risk and will trigger one of the three levels of protection, as described in items (a) to (c) below. Every event is accompanied by a warning text on the screen (see ). - Page 35 User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier At the second level (SOFT FAULT) the amplifier reverts to STANDBY mode for four seconds or permanently depending on whether the AUTO OPERATE user setting had been activated. A respective message is shown on the screen, for example "Excessive Reflected Power", "Excessive Drain Current", and others,...
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Page 36: Menus - Settings And Options
User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier 5. MENUS - SETTINGS AND OPTIONS By pushing the MENU button (the rightmost on Figure 3-2 Basic screen without ACOM 04AT antenna tuner ) the user invokes the MENU SELECTION screen (see ). -
Page 37: Menu Amp Measure (Amplifier Measurements)
User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier Menu AMP MEASURE (Amplifier Measurements) 5.1. The menu AMP MEASURE (see ) is accessible from the MENU SELECTION Figure 5-2 Menu AMP MEASURE screen (see ) in all modes. Here you can constantly observe the values of eleven Figure 5-1 MENU SELECTION parameters. -
Page 38: Menu Amp Service (Amplifier Service Functions)
User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier Menu AMP SERVICE (Amplifier Service Functions) 5.2. The amplifier service menu (see ) is accessible from the MENU SELECTION Figure 5-3 Menu AMP SERVICE screen (see ) at RX mode only. -
Page 39: Menu Cat/Aux Settings (Selection Of Cat/Aux Interface)
User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier Menu CAT/AUX SETTINGS (Selection of CAT/AUX Interface) 5.3. After a CAT cable is connected between the transceiver and amplifier, the correct settings for the transceiver have to be set via this menu. If there is no CAT connection, OFF has to be selected as Interface type. -
Page 40: Table 5-1 Transceiver Interface Type And Command Set Selection
User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier Table 5-1 Transceiver interface type and command set selection Transceiver Interface Command set ELECRAFT RS-232 ICOM (Connection to the REMOTE jack) ICOM (Connection to the RS-232 port or CT17) -
Page 41: Menu User Preferences
5.4. Figure 5-5 Menu USER PREFERENCES Figure 5-5 Menu USER PREFERENCES ANTENNA TUNER/SWITCH INSTALLED If ACOM 04AT remote automatic antenna tuner is installed, select YES. Refer to ACOM 04AT User's Manual (available for download at www.acom-bg.com AUTOMATIC MENU EXIT When AUTOMATIC MENU EXIT is turned ON, the amplifier exits the currently selected menu if no button has been pressed for more than 5 minutes. -
Page 42: Menu Faults Log
User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier Finish by moving the pointer out of the editable fields by means of the SELECT (left arrow) button. OPERATE ACCESS When locked, the amplifier remains in STANDBY and cannot be switched to OPERATE unless unlocked in the same menu. -
Page 43: Menu Restore Default Settings
User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier Menu RESTORE DEFAULT SETTINGS 5.6. Four different factory-reset levels are available (see Figure 5-7 Menu RESTORE DEFAULT SETTINGS In order to confirm the selected action, the operator must push the ACTION (down arrow) button once more (as YES confirmation). -
Page 44: Remote Control
Remote Control via ACOM eBox 6.1. Remote control of ACOM 1200S via Internet is provided by the ACOM eBox Ethernet Remote Control device. The operation of ACOM 1200S with ACOM eBox is described in the ACOM eBox User's Manual (available for download at www.acom-bg.com... -
Page 45: Maintenance
7. MAINTENANCE DANGER Both the mains voltage and the high DC voltage up to 500 V inside the ACOM 1200S amplifier are LETHAL! For your safety, pull the amplifier power plug out of the mains wall outlet and WAIT AT LEAST 3 minutes EACH TIME BEFORE you remove the cover of the amplifier. -
Page 46: Figure 7-1 Bottom View - Air Filters
User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier • PS air filter Please, see , Pos. (2). Figure 7-1 Bottom view - Air Filters To remove the filter unscrew the 2 mounting screws ( Figure 7-1 Bottom view - Air , Pos. -
Page 47: Cleaning
User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier Cleaning 7.2. CAUTION Do not use any solvents for cleaning. They may be dangerous to you and damage amplifier surfaces, paint and plastic components. Do not open the amplifier. Cleaning of the amplifier outer surfaces can be done with a piece of soft cotton cloth lightly moistened with clean water. - Page 48 User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier If, after Primary Mains Fuses replacement, the device does not operate normally, we recommend repair, performed only by a trained service technician. Contact your ACOM dealer for assistance (see Section 1.2 Owner Assistance...
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Page 49: Using The Fault Codes (Signatures) For Diagnostics
FAULTS LOG The data can be downloaded from ACOM 1200S memory through the RS-232 port and stored in a computer file even if the amplifier cannot be turned on after a serious fault - only external power has to be fed to the Control unit in either of the following ways: 8 to 15 V DC voltage applied to the "DEBUG mode"... -
Page 50: Firmware
FAULTS LOG before you undertake any action. When ACOM issues a new firmware version, the user can upload it in the amplifier after he checks the compatibility. When compatibility is confirmed a return to an earlier version is also possible. -
Page 51: Figure 7-2 Acom Terminal S Screenshot
User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier Figure 7-2 ACOM Terminal S screenshot Connection Settings (bitrate, port selection, etc.) Disconnect Firmware Update Connect Figure 7-2 ACOM Terminal S screenshot For detailed instructions how to upload a firmware, please, read... -
Page 52: Specifications
User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier 8. SPECIFICATIONS Parameters 8.1. Standard Frequency Coverage* 1.800 - 2.000 MHz (160 m band) 3.500 - 4.000 MHz (80 m band) 5.020 - 5.455 MHz (60 m band)** 7.000 - 7.300 MHz (40 m band) 10.100 - 10.150 MHz... - Page 53 User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier Acceptable SWR at the output load (the antenna): up to 3 with proportional power • reduction and up to 1.5 for full output power; RF power gain 14 dB 1 dB (typically 40 W for 1000 W output power);...
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Page 54: Functions
Frequency control directly by CAT from the transceiver Remote control through ACOM eBox Ethernet Remote Control device or via RS-232 interface Remote POWER ON by DSR/DTR and CTS/RTS lines on the RS-232 port or by ACOM eBox Ethernet Remote Control device Remote POWER ON / TURN OFF by DC voltage impulse or continuous DC voltage on CAT/AUX port ON_RMT input. -
Page 55: Storage And Shipment
User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier Storage and Shipment 8.3. 8.3.1. Storage Environment The amplifier may be kept packed in a dry, ventilated and unheated location (with no chemically active substances such as acids or alkalis) within the following environment ranges:... -
Page 56: Information On Disposing And Recycling Of Old Electrical And Electronic Equipment
User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier Information on Disposing and Recycling of Old Electrical and Electronic Equipment 8.4. The information in this section is applicable for countries that have adopted separate waste collection systems. ACOM products cannot be disposed as household waste. -
Page 57: Notes
User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier NOTES ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. August 2021 S e c t i o n NOTES | Page 57 of 60... - Page 58 User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. Page 58 of 60 | S e c t i o n NOTES...
- Page 59 User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier 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...
- Page 60 о о support@acom-bg.com ACOM and the ACOM logo are registered trademarks of ACOM Ltd. in many countries, www.acom-bg.com including the EU and United States. I The used images are illustrative only. Subject to change without notice. I Printed in Bulgaria.
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