Table of Contents
Related Manuals for OM POWER OM4000HF
Summary of Contents for OM POWER OM4000HF
- Page 1 Exhibit 6: User’s Manual External Radio Frequency Power Amplifier OM4000HF Model 4000HF Array Solutions 2611 North Beltline Rd Suite 109 Sunnyvale, Texas 75182 Tel: 214 954 7140 fax: 214 954 7142 E-mail: info@arraysolutions.com...
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Page 2: Table Of Contents
TABLE OF CONTENTS GENERAL INFORMATION Introduction ……………………………………………………………….. 1.1. Specification ……………………………………………………………..1.2. 1.2.1. Parameters …………………………………………………………………. 1.2.2. Protection Circuits ………………………………………………………… 1.2.3. Indicators ………………………………………………………………….. SAFETY INSTRUCTIONS ……………………………………………… GENERAL DESCRIPTION ………………………………………………. HF part ……………………………………………………………………. 3.1. Power Supply …………………………………………………………….. 3.2. Safety Devices ……………………………………………………………. 3.3. INSTALLATION ………………………………………………………… Grounding …………………………………………………………………... - Page 3 APPENDIX ……………………………………………………………... Block Diagram of OM4000 HF Power Amplifier ……………...………... 7.1. Page 3 of 18...
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Page 4: General Information
GENERAL INFORMATION 1.1. Introduction The OM Power model OM4000 HF is a manual tuning power amplifier, designed for use on all short wave amateur bands from 1.8 to 29.7 MHz (including WARC bands) and all modes. It is equipped with a two pieces of ceramic tetrode FU728F. -
Page 5: Indicators
1.2.3. Indicators There are couples of LED and bar graph indicators visible on the front panel to inform you about value of some parameters or operation status: Bar graph indicators Power output - 50 LED Reflected power – 20 LED Current at screen Ig2 –... -
Page 6: General Description
WARNING! Before opening the upper lid of the amplifier make sure that power supply has been disconnected AT LEAST 5 minutes, allowing the electrolytic capacitors to discharge fully. Disconnect power cord from the outlet! WARNING! OM4000 HF amplifier can be operated ONLY if both of supply cables are connected! WARNING! Make sure that all screws holding the case together are properly in place and tightened before carrying the amplifier with the handles! -
Page 7: Power Supply
Top view on the opened OM4000 HF FU728F PWR meter Blower Switch-on board Tetrode Output Pi-L Circuit Tuning capacitor Power supply board Subpanel 3.2. Power Supply Power supply of the amplifier is comprised of two of 3 kVA toroidal transformers. A soft start is provided using relays and resistors. -
Page 8: Safety Devices
3.3. Safety Devices Control and monitoring circuits ensure control and safety during malfunctions of the PA. These are on the Control board, which is located on the chassis subpanel. INSTALLATION NOTE Read this chapter carefully prior you will start installation. Before unpacking inspect shipping woody container first, if it is not damaged. -
Page 9: Control Cable
Rear view of the amplifier OM4000 HF AC SOCKETS FUSES OUTPUT CONTROL INPUT 4.3. Control Cable Control cable maintains TX / RX switching of the PA (TX GND). The cable is shielded. On the side of the power amplifier a CINCH-socket is used. On the side of your transceiver you have to use a socket suitable for this transceiver. -
Page 10: Mains Supply
4.4. Mains Supply CAUTION Be sure you got PA with properly terminated mains cables, corresponding with your power system’s outlet. If not, contact your dealer. In such a case you should make the necessary changes using a licensed electrician. WARNING! Be sure that your power system is correctly wired and properly rated! To use adequately sized and connected grounding system is also very important. -
Page 11: Operation Elements
CAUTION Do not turn PA on for at least 2 hours after unpacking it and locating in its operating location. Especially when amplifier is moved from a cold place to a warm one because not visible condensation may develop, and this could result in damage to the high voltage circuits of the PA. -
Page 12: Tuning Of Power Amplifier
In STBY, if WAIT-LED is on or the amplifier is OFF, the amplifier is in bypass-mode and your transceiver is directly connected to the antenna. Maximum allowed power in bypass mode is 200 Watts! Bar graph – shows output power . RF OUTPUT Bar graph –... - Page 13 1. Set the multimeter switch to the HV position 2. Set the OPR/STBY switch to the STBY position 3. Press the ON button The amplifier is prepared for operation with the following automatic steps: The toroidal transformers are switched on step by step. ...
- Page 14 Band Tune Load 8. Set TUNE knob in such a way, that the TUNE-LED lights up maximum left. 9. Set LOAD in such a way, that the TUNE LED on the TUNE scale lights up under the “V” sign. If it is possible to obtain the LOAD in 2 positions, set the position that is more to the right.
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Page 15: Maintenance
MAINTENANCE 6.1. Indication of fault conditions OM4000 HF has the following indication LED on the front panel: GRID MIN - Indication of first gird current GRID MAX - Max. First grid current exceeded - Measuring of anode voltage by bar graph - Measuring of anode currency by bar graph FAULT - Fault... -
Page 16: Fuse Replacement
Dealer in USA: Array Solutions 2611 North Belt Line Road Suite # 109 Sunnyvale, TX 75182 Tel: (214)954-7140 Email: sales@arraysolutions 6.2. Fuse Replacemeent The user is allowed to change mains fuses (6,3 x 32mm), accesible from the rear panel, only. In the case of interrupted fuse (fuses) inside the power amplifier, contact your dealer, please. - Page 17 APPENDIX 7.1. Block Diagram of OM4000 HF Power Amplifier Page 17 of 18...
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