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OM POWER OM2000A+ Instruction Manual

Shortwave plus 50 mhz power amplifier
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MADE IN SLOVAKIA
Instruction Manual
OM2000A+
SHORTWAVE PLUS 50 MHz
POWER AMPLIFIER
FCC ID: X8NOM2000A
+
OM Power, s.r.o. 93030 Báč 126,
SLOVAKIA
Contact : +421 905 321 410
e-mail: om-power@om-power.com
WWW.OM-POWER.COM
1

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Summary of Contents for OM POWER OM2000A+

  • Page 1 MADE IN SLOVAKIA Instruction Manual OM2000A+ SHORTWAVE PLUS 50 MHz POWER AMPLIFIER FCC ID: X8NOM2000A OM Power, s.r.o. 93030 Báč 126, SLOVAKIA Contact : +421 905 321 410 e-mail: om-power@om-power.com WWW.OM-POWER.COM...
  • Page 2 Thank you for purchasing this new model of the OM Power’s RF power amplifiers line for HF and 50 MHz amateur radio bands. You now own, the OM2000A+, an automatic unit with no knobs, no rotary switches on the front panel, just two small switches and one large touch display.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS 1. GENERAL INFORMATION ..................1.1. Introduction ………………………………………………………………. 1.2. Specification ………………………………………………………………. 1.2.1. Parameters …………………….…………………………………. 1.2.2. Protection Circuits ………………………………………………………. 1.2.3. Features ………………………………………………………………. 1.2.4. The Advantages of OM2000A+ …………………………………………… 2. SAFETY INSTRUCTIONS ………………………………………………………. 3. GENERAL DESCRIPTION ………………………………………………………. 3.1. HF part ………………………………………………………………….
  • Page 4 6.4. Cleaning …………………………………………………... 7. APPENDIX ……………………………………………………………. 7.1. Primary AC selection …………………………………………………… 7.2. Removing the HV Transformer ……………………………………………. 7.3. Controlling OM200A+ with FLEX Radio Series 6xxx ……………………… 7.4. OM2000A+ Remote Control ………………………………………………. 7.5. Remote Control using own public IP Address ........7.5.1.

  • Page 5: General Information

    1. GENERAL INFORMATION 1.1. Introduction he OM Power model OM2000A+ is designed for all short wave amateur bands from 1.8 to 29.7 MHz (including WARC bands) plus 50 MHZ and all modes. It is equipped with a ceramic tetrode FU-728F.

  • Page 6: Protection Circuits

    1.2.2. Protection Circuits There are several protection circuits used in the amplifier. They are activated when one or more of next parameters exceed defined values or some unwanted occasion occurs. VSWR too high • Anode current too high • Anode voltage error •...

  • Page 7: Safety Instructions

    SAFETY INSTRUCTIONS DANGEROUS HIGH VOLTAGE INSIDE! The power amplifier is using high voltage up to 3200V DC, which is very dangerous for human life! Read next safety instructions carefully first, before you will start to install and operate power amplifier! NEVER VIOLATE NEXT RULES! NEVER ALLOW CHILDREN to play around PA or to touch power amplifier or connected cables in working condition, or to push anything into the case holes! Never turn the amplifier on without the upper lid in place.

  • Page 8: General Description

    CAUTION The amplifier must be installed in such a way that free flow of hot air from the tube is allowed. The amplifier must not be installed in a constrained surrounding (i.e. tight shelves etc.). During long time operation ventilation grid can reach high temperature. Do not touch it! The amplifier must be properly grounded during operation During operation the amplifier must be installed in such a way that the rear side remains accessible.
  • Page 9 The output of the amplifier is a Pi-L circuit. The ceramic capacitor for TUNE and LOAD are divided. This enables the amplifier to be tuned exactly and makes it possible to easily return to the previously set positions after band changes. Top view on the opened OM2000A+ Tetrode FU728F Blower...

  • Page 10: Power Supply

    3.2. Power Supply Power amplifier is using one 3 KVA toroidal transformer. A soft start is provided using relays and resistors (placed on the switch-ON board). The high voltage is made by combining 4 x 575V AC (total abt. 3200V DC) @ 1.2A. Each has its own rectifier and filter. In the high voltage circuit, safety resistors are employed to protect the amplifier against overload (placed on the power supply board).

  • Page 11: Grounding

    During installation go step by step according to the next parts. 4.1. Grounding The amplifier has to be grounded properly! Connect the screw on the rear panel of the amplifier to your local grounding system with a copper cable; use a cross-section of 4 mm (AWG 12 ) at least.

  • Page 12: Control Cable

    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 13: Operation

    OPERATION Before switching PA on, make sure that amplifier is grounded, antenna or dummy load is connected, and line cord is putted to the outlet. Be sure you selected AC input by 7.1. Do not turn PA on for at least 2 hours after unpacking it and locating in its operating location.

  • Page 14: Om2000A+ Control

    5.2. OM2000A+ control Turn ON the Main switch and the home screen will lights up. In the bottom line touch buttons are visible Remember that the home screen is active for some information and settings , while PA is still OFF! BAND Touch the left side of BAND button to go down, touch the right site to go up with band displayed above the button.
  • Page 15 Also it provides an overview of the last 20 Type of supported TCVR and warnings and faults: working frequency are visible on the display. Touch FAULTS. AUTO LED is ON. Type of supported TCVR and working frequency are visible on the Press EXIT to go back to the home display.
  • Page 16 Type of supported TCVR and working Scroll to CAT SETTINGS (up or down) and touch SET. frequency are visible on the display. AUTO LED is ON. Scroll to your TCVR family (up or down) Type of supported TCVR and and select baud rate (left or right), then working press SET.
  • Page 17 You selected IC7800 addr.6AH and 19200 Bd. Press SET to write to the memory, Type of supported TCVR and then press EXIT to go back to the working SETTINGS possibilities. frequency are visible on the “SET OTHER ADDRESS” means that you display.
  • Page 18 NETWORK SETTINGS is present in software version 4.01 and above (all Type of supported TCVR and software software releases after May working 2017 already includes this feature) frequency are visible on the Press SET to enter to this settings. display. AUTO LED is ON.
  • Page 19 Press SET for your callsign edit. The Type of supported TCVR and keyboard displays. working frequency are visible on the display. AUTO LED is ON. Type of supported TCVR and working Type your callsign and press ENT. frequency are visible on the display.
  • Page 20 Next lines are for EBS (Electronic Bias Settting) ON/OFF and for EBS level Type of supported TCVR and selection. working We recommend EBS ON. See next frequency are visible on the comment for more details. display. AUTO LED is ON. Electronic Bias Settings (EBS) is one of significant feature of the power amplifier.

  • Page 21: Preparing For Operation

    Last settings allows to see INFO. All of Type of supported TCVR and previous information screen will be visible working plus one more for upgrade. frequency are visible on the display. AUTO LED is ON. UPGRADE touch button can be used ONLY in the case if EEPROM or firmware Type of supported TCVR and files (or both) will be upgraded.
  • Page 22 Time to go is visible on the display. Wait Type of supported TCVR and until heating finish. working frequency are visible on the display. AUTO LED is ON. After heating finished PA will stay in STBY mode and Main display will appear. Type of supported TCVR and working frequency are visible on the...
  • Page 23 Type of supported TCVR and working Use ANTENNA (left/right) to select one of preprogramed antenna for that band. frequency are visible on the display. AUTO LED is ON. Menu display allows to go deeper to the Type of supported TCVR and SETTINGS mode, MEASuring mode or to working SERVICE mode.
  • Page 24 New button is visible – SET Umain. Press Type of supported TCVR and working frequency are visible on the display. AUTO LED is ON. Type proper value of the primary voltage Type of supported TCVR and and press ENT. working Press EXIT twice to go back to the Menu frequency are visible on the display.
  • Page 25 Three different bar graphs can be defined Type of supported TCVR and using BARG1, BARG2 or BARG3 button. working frequency are visible on the display. Press BARG1. AUTO LED is ON. Green graph may show one of the 8 Type of supported TCVR and parameters.
  • Page 26 Type of supported TCVR and working Press EXIT to go back to the Menu display, then press SERVICE. frequency are visible on the display. AUTO LED is ON. Now we are in the SERVICE settings Type of supported TCVR and mode.
  • Page 27 PA will automatically set 20mA of EBS. Type of supported TCVR and working You can try to do this manually, too. frequency are visible on the Scroll to SET EBS1 MANUAL and press display. SET. AUTO LED is ON. Use left/right button to set 20mA or as Type of supported TCVR and close as possible value and press SAVE.

  • Page 28: Operation Mode

    This feature allows user to switch OFF the SWR protection. Type of supported TCVR and We recommend to set it ON (SWR working protection circuit will stay active, max. frequency are visible on the allowed SWR is 3:1). If OFF is selected, higher SWR is allowed, but reflected display.
  • Page 29 Now try to press PTT (foot switch for Type of supported TCVR and example). working We are in the transmit mode (without RF). frequency are visible on the display. We have new button here. M-TUNE. AUTO LED is ON. M-TUNE means entry to the manual tuning mode. It allows fine tuning of PA, or in the case if automatic tuning cannot set optimal adjustment of the PA.
  • Page 30 Measured driving power is 53 Watts. Type of supported TCVR and working frequency are visible on the Now switch to OPER, press PTT and apply display. RF from TCVR. See the following picture. AUTO LED is ON. Output power is 1507W, reflected power reached abt.
  • Page 31 When the antenna impedance has greater tolerance, it may be the case that the PA can not deliver the full power 1500W, or some of protection circuits will be automatically activated. In such a case we recommend to do manual tuning. The best indication of proper PA tuning is the Screen Current.

  • Page 32: Maintenance

    If the amplifier demonstrate any malfunctions during tuning or it does not behave in accordance witch the description, interrupt the tuning procedure immediately and check the amplifier! Be sure not to do any mistakes in choosing antennas, bands or segments! Be sure that VSWR is not higher than 3:1 and input power is LOW! After excluding possible human mistakes you will be able to work for long time with this amplifier! MAINTENANCE...
  • Page 33 ll the warning and fault messages are stored in the memory. You can display particularly warning messages and particularly error messages. They are stored one by one to the memory. You can see them on the display. If memory is full, every new message will delete oldest one and move rest of them one position back.

  • Page 34: Fuse Replacement

    6.2. Fuse Replacement The user is allowed to change mains 20A fuses (6.3 x 32mm), accessible from the rear panel, only. In the case of fuse (fuses) interruption inside the power amplifier, exchange can be carried out only by professionally qualified person! Internal fuses are located mainly on the SWITCH-on board (next to the HV transformer).
  • Page 35 Side view on the opened OM2000A+ HV Transformer AC Selector Remove the upper lid first. On the right side of the PA, next to the HV transformer there are two PCBs mounted. On the left upper side of the front (Switch-ON) board connector J6 is located. Use flat screwdriver or finger and press carefully the white stick to release contact and move upper end of the white jumper to the proper position, if...

  • Page 36: Removing The Hv Transformer

    7.2. Removing HV Transformer For simpler and easier transport of the PA, HV transformer can be removed and taken separately. This distributes the weight of the PA (24 kg) about half and half. Follow next steps to do it. 1. Remove upper lid from the PA (use Phillips screwdriver bit PH1 !) . 2.

  • Page 37: Controlling Om200A+ With Flex Radio Series 6Xxx

    – a hardware COM port in your PC or an USB to serial port adapter. Connect the chosen COM port and the transceiver port ( TCVR DB9 )to the OM Power amplifier with a null modem serial cable (both ends of the cable with a female DB-9 connector and pins 2 and 3 are crossed).
  • Page 38 Flex Radio 6xxx series connection using USB output Connect USB from Flexradio directly to TCVR port on OM2000A+ using USB – serial port adapter and a null modem serial cable (both ends of the cable with a female DB-9 connectors (pins 2 and 3 are crossed).

  • Page 39: Om2000A+ Remote Control

    AUTO LED is ON. 7.4. OM2000A+ Remote Control The OM Power team developed special software which allows control the PA OM2000A+ remotely. Download it from the official OM Power website http://www.om-power.com/downloads. First unzip the downloaded file, then open software.
  • Page 40 To check almost all operation parameters of the PA • To select different screens • Antenna retuning if parameters changed • Have a look on the next pictures and follow instructions to setup remote control properly. Connection setting. Set up TCP/IP address and port...
  • Page 41 Connect / disconnect to OM2000A+ View last 20 PA faults...
  • Page 42 There are three possible screen selectable Minimal view To go back from Minimal view click with right mouse button and close it. Normal view will appear back. Normal view...
  • Page 43 Advanced view Fine tune screen. It is possible to retune the PA remotely (if antenna parameters changed, for example), too. Proceed the same way than with local control (page 28).

  • Page 44: Remote Control Using Own Public Ip Address

    7.5. Remote Control using own public IP address 7.5.1 Changing OM2000A+ connection settings Connect LAN connector on OM2000A+ to PC with ethernet cable. Open up a WEB browser and enter the OM2000A+ current IP address (default is 192.168.1.211). An authentication window will show up. Leave the fields empty and click OK.

  • Page 45: Setting Up In The Remote Software

    You can change the OM2000A+ Port number too, if you need / want in the Connection menu. When done, click OK. When done, click Apply Settings in menu. 7.5.2 Setting up in the Remote software In the Remote Control software open Settings and enter the IP Address and Port number that you set in point 7.5.1.

  • Page 46: Remote Control Without Own Ip Address, Behind A Router

    7.5.3 Remote Control without own IP Address, behind a router If you need to change the OM2000A+ connection setings for some reason, use point 7.5.1 writen above. Change router´s settings Open up a WEB browser and enter the routers´s internal IP Address ( usually 192.168.1.1) Type of supported TCVR and working frequency are visible on the display.

  • Page 47: Om2000A+ Firmware Upgrade

    Open Basic Setup (or WAN Settings or similar, depending on router) and note the WAN IP Address value. In Remote Control software, open Settings. Enter the IP Address and Port number you set up in previous point in your router. IP Address is the WAN IP Address in basic setup page and Port number is the Port Type of supported TCVR and...
  • Page 48 Open folder OM2000A , find MX460L.exe file and run it. Type of supported TCVR and working frequency are visible on the display. AUTO LED is ON. Select SETTINGS and choose COM port you want to use. Baud rate should be 115200. Close the window.
  • Page 49 Select the Firmware tab and click on LOAD BIN Choose OM2000A+ Vxxx.bin file in the OM2000A folder. Type of supported TCVR and working frequency are visible on the display. AUTO LED is ON. Switch ON power amplifier using mains switch. Press SETTINGS.
  • Page 50 Press UPGRADE. Type of supported TCVR and working frequency are visible on the display. AUTO LED is ON. When you see this screen, go to PC software and press button SEND TO LINE. Type of supported TCVR and working frequency are visible on the display.
  • Page 51 Press LOAD on OM2000A+ to start loading. Type of supported TCVR and working frequency are visible on the display. AUTO LED is ON. You can see loading progress on the bar graph Type of supported TCVR and working frequency are visible on the display.
  • Page 52 At the end you will see main screen of OM2000A+. Switch PA OFF, disconnect serial cable and you are ready to use OM2000A+ with the new firmware.

  • Page 53: Icom Connection With Om2000A

    7.7. ICOM connection with OM2000A+...

  • Page 54: Yaesu Plus Bpf Plus Ant Switch Connection With Om2000A

    7.8. Yaesu plus BPF plus ANT Switch connection with OM2000A+...

  • Page 55: Control Panel Connectors Pin-Out

    7.9. Control panel (rear side) connectors pin-out TCVR connector DB 9 male RS232 connection with TCVR. For CAT communication you need connect pin 2 RX-D, pin 3 TX-D and pin 5 GROUND CI-V connector Use CI-V connection for communication with ICOM type transceiver.
  • Page 56 LAN connector Use for connection to the LAN or WAN network. CONTROL connector D-sub 15 female - GROUND - KEY OUT - ouput signal PTT ( maximum switching of 30V / 50mA - KEY IN input signal PTT – switching voltage / current 5V / 2mA - CI-V CI-V input for Icom CAT.
  • Page 57 1 - ANT data D - output BCD code - bit 3 for antenna switching 2 - ANT data C - output BCD code - bit 2 for antenna switching 3 - ANT data B -- output BCD code - bit 1 for antenna switching 4 - ANT data A - output BCD code - bit 0 for antenna switching 5 - Not connected 6 - GND...

  • Page 58: Block Diagram Of The Om2000A+ Power Amplifier

    7.10. Block Diagram of the OM2000A+ Power Amplifier...

  • Page 59: Troubleshooting

    7.11 Troubleshooting The OM2000A+ power amplifier contains several protection circuits, which checked operation. In the case when some of parameters exceeds normal level, WARNING appears in the LAST EVENS window with yelllow back colour. If some of parameters exceeds critical level, FAULT is activated and the PA automatically switch to STBY mode.
  • Page 60 Plate voltage error Check plate power supply High voltage supply fault. Check fuses on HV board. Low voltage on the grid. Check fuse F4 on SW ON Grid voltage is low Check grid power supply board. Check fuse F5 on HV supply board and fuse F1 on the Screen voltage error Check screen power supply screen board.
  • Page 61 After finish the PA is ready for operation. Type of supported TCVR and working frequency are visible on the display. AUTO LED is ON. Important notice: Perform Factory reset unless it is really necessary, because subsequently you must recover all of personalized settings, mainly CAT communication with TCVR, antenna switch settings etc.

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