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OM POWER OM4000A, Instruction Manual

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OM POWER OM4000A Instruction Manual Download Page 19

 
 

19 

 

5.2.3.

 

Communication loss 

 

If TCVR is not connected or communication settings are incorrect, the message “COMMUNICATION 
LOST” will be displayed. You can still use PA by entering MANUAL mode  (MAN Button)  or by 
correcting the transceiver connection problem. 

 

 

 

 

 

5.2.4.

 

Antenna Switching Menu 

If you have 3

rd

 party external antenna switch connected to your amplifier ( i.e. MicroHAM TEN 

SWITCH),  you need to configure the assignment of each port to a specific band /or antenna. 

 

 

 

 

 

 

 

 

 

 

mmm  

  

    

Example of Communication loss message. 

mmm  

  

    

By pressing SET and scrolling to ANTENNA 
SETTINGS   and confirming by SET you get 
current band and its antenna selection.  

mmm  

  

By scrolling UP / DWN you can select BAND 
which  you  want  to  assign  to  current 
ANTENNA selected. 

Summary of Contents for OM4000A

Page 1: ...1 Instruction Manual OM4000A SHORTWAVE POWER AMPLIFIER WWW OM POWER COM OM POWER s r o 93030 B 126 SLOVAKIA Contact 421 905 321 410 e mail om power om power com...

Page 2: ...ing 13 4 6 Remote Control 13 5 OPERATION 13 5 1 Operation Elements 14 5 2 Configuration of Power Amplifier 16 5 2 1 TCVR Support Settings 17 5 2 2 Connection with not supported TCVRs 18 5 2 3 Communic...

Page 3: ...tion with Antenna Switch and BPF 31 7 5 of connection USB Micro KEYER II with IC7800 or IC7700 32 7 6 Example of connection USB Micro KEYER II with another ICOM 33 7 7 Example of connection USB Micro...

Page 4: ...tches The possibility to use 2 different antennas within one band or segment 1 2 Specification 1 2 1 Parameters Frequency Coverage Amateur Bands 1 8 29 7 MHz including WARC Power Output 4000W in SSB a...

Page 5: ...re 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 LEDs Reflected power 20...

Page 6: ...under upper lid WARNING The OM4000A amplifier can be operated ONLY if both of supply cables are connected The amplifier reaches optimal parameters in 2 phase s system if you do not have 2 phases conn...

Page 7: ...e this disturbance CAUTION Make sure that all screws holding the case together are properly in place and tightened before carrying the amplifier with the handles CAUTION Read this manual carefully Fal...

Page 8: ...y Board 3 2 Power Supply ower supply of the amplifier is comprised of two of 3 kVA toroidal transformers A soft start is provided using relays and resistors The high anode voltage is made by combining...

Page 9: ...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 mm2 at least Connect your transceiver to the sa...

Page 10: ...ransmitting the middle pin is connected to the ground The relays of the OM4000A have to be switched earlier than HF is applied cold switching Modern transceivers they have a time delay between PTT swi...

Page 11: ...ce is done via TCVR type PC DB 9 RS232 port is used for communication with your PC Please use setting you would normally use if using direct TCVR PC connection ALC RCA Phono Automatic Level Control is...

Page 12: ...HIBIT for Yaesu and Elecraft this supersedes ALC output 5 NC 6 KEY OUT 7 NC 8 KEY IN 9 15 GND ANT BPF SW DB 25 is used for switching of external HP BPF or external Antenna Switch Maximum switching of...

Page 13: ...ant 4 5 Cooling CAUTION The amplifier must be installed in such a way that free flow of hot air from the tube is allowed Do not obstruct air intake and exhaust areas of the PA The centrifugal blowers...

Page 14: ...a warm one because not visible condensation may develop and this could result in damage to the high voltage circuits of the PA CAUTION Never try to change antenna output during a transmission to avoid...

Page 15: ...on OPR STBY OPERATE sets the amplifier ready for transmit operation 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...

Page 16: ...d antenna on a given frequency SET button for MAIN MENU Confirmation of selection Saving of selected value Saving of tuning parameters TUNE Push button for selection of TUNE mode AUTO Push button for...

Page 17: ...s ICOM ELECRAFT KENWOOD TEN TEC ORION YAESU Press SET button and scroll UP DWN to CHOOSE TCVR mmm Confirm CHOOSE TCVR by pressing SET again and scroll UP DWN to your transceiver type Confirm the selec...

Page 18: ...y 5 2 2 Connection with not supported TCVRs For communication with TCVRs that are not supported by OM4000A for example JST 245 and older types of Kenwood an external IF 232 converter is to be used You...

Page 19: ...enna Switching Menu If you have 3rd party external antenna switch connected to your amplifier i e MicroHAM TEN SWITCH you need to configure the assignment of each port to a specific band or antenna mm...

Page 20: ...T and scroll using UP DWN to LOAD DEF VALUES and confirm by SET mmm Then select how many antennas you want per current band 1 or 2 and always confirm your selection by pressing SET mmm By scrolling UP...

Page 21: ...portant to notice that this is not a true ALC only the transmitter will be blocked in this way during the process of PA tuning Then select if you want to erase all settings pressing TUNE or just one s...

Page 22: ...r this purpose the amplifier has to be tuned carefully T Using SET and scrolling UP DWN select SET LCD CONTRAST and confirm it by SET By pressing Up or DWN you can vary contrast of the LCD display Fin...

Page 23: ...be shifted and IM products will be rapidly increased If a value of 100mA is exceeded the safety devices will switch the amplifier to STBY mode 5 3 1 AUTO or MANUAL There are two possibilities of opera...

Page 24: ...not very good and input power is higher than 15watts safety devices will switch PA automatically to STBY In such a case start with step 4 go thru all next steps 4 Reduce the power output of your trans...

Page 25: ...input power is LOW After excluding possible human mistakes you will be able to work for long time with this amplifier 5 3 3 Tuning Adjustment Entering the TUNE mode is done by pressing the TUNE butto...

Page 26: ...ier will be turned to STBY mode After approx 2 sec the control circuits will switch the amplifier back to OPR CAUTION If the fault will repeat 3 times after each other the control circuits will turn t...

Page 27: ...urer or your dealer for ordering new one You will get instructuions how to change tube and how to preset proper parameters too Be very careful you will do it only on your own risk If you are not comfo...

Page 28: ...28 7 1...

Page 29: ...29 7 2 Example of connection for ELECRAFT...

Page 30: ...30 7 3 Example of connection with Yeasu...

Page 31: ...31 7 4 Example of connection with antenna switch and BPF...

Page 32: ...32 7 5 Example of connection USB micro KEYER II with IC7800 or IC7700...

Page 33: ...33 7 6 Example of connection USB micro KEYER II with another Icom...

Page 34: ...34 7 7 Example for connection USB micro KEYER II with Yeasu or ELECRAFT...

Page 35: ...35 7 8 Example of connection PA with MicroHAM MKII MK2R etc with CI V output...

Page 36: ...36 7 9 Block Diagram of the OM4000A Power Amplifier...

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