DB Elettronica Telecomunicazioni MOZART 1000 Calibration Manual Download

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Mozart series calibrating procedure

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PROCEDURE TO

CALIBRATE

MOZART

Release 1.0

- DB ELETTRONICA TELECOMUNICAZIONI S.p.A. -

- Riviera Maestri del Lavoro, 20/1 - 35127 Z.I. SUD PADOVA ITALY -- Ph. (049) 870-0588 - Fax. (049) 870-0747 -

- http://www.dbbroadcast.com -

Summary of Contents for MOZART 1000

Page 1: ...ating procedure 1 19 PROCEDURE TO CALIBRATE A MOZART Release 1 0 DB ELETTRONICA TELECOMUNICAZIONI S p A Riviera Maestri del Lavoro 20 1 35127 Z I SUD PADOVA ITALY Ph 049 870 0588 Fax 049 870 0747 http...

Page 2: ...pdate Document History Rev Date Name Details 1 0 June 2014 AB Issued June 2014 Version 1 0 2014 Copyright by DB Elettronica Telecomunicazioni SpA Riviera Maestri del Lavoro 20 1 35127 Z I SUD PADOVA I...

Page 3: ...IG 5 MPX BOARD PROGRAMMER CONNECTOR 7 FIG 6 CONTROL BOARD PROGRAMMER CONNECTOR 7 FIG 7 50OHM LOAD CONNECTION 8 FIG 8 ENABLE SHORT CIRCUIT INTERLOCK 9 FIG 9 AMPER METER DIAGRAM 10 FIG 10 AMPER METER IN...

Page 4: ...r please follow the next steps STEP 1 FILTER CHECK Before starting to calibrate the Mozart the output filter must be calibrated using a Network Analyzer Below the best results of a calibrated filter a...

Page 5: ...the switching power supply units inside the box are present see next paragraphs adjusting them to the correct values POWER SUPPLY On the power supply set the output voltage to 44VDC adjusting the trim...

Page 6: ...01 POWER SUPPLY BOARD On the 001 000185 01 power supply board check if a the 44VDC input power is present b 15VDC 15VDC 12VDC 12VDC and 5VDC output power are present Fig 4 001 000185 01 DC DC converte...

Page 7: ...ozart in the local disk C b Install ICD3 and MPLAB in your computer as indicated in the instruction manual of ICD3 c Connect the ICD3 programmer to an USB port of your PC and to the Mozart transmitter...

Page 8: ...Mozart series calibrating procedure 8 19 h After the process is complete switch off the Mozart amplifier and connect to it a 50ohm load to output Fig 7 50ohm load connection...

Page 9: ...RF POWER CHECK a On the 001 000181 01 board PLL VCO board disconnect the RF output coax cable SMB connector from the board b On the rear of the amplifier make a short circuit on the ENABLE connector...

Page 10: ...R MODULE This step is only for Mozart 50 150 300 500 and 1000 c Disconnect the power cables from the RF amplifier module pallet which go to 48V main power supply and connect an amper meter in series F...

Page 11: ...FF button on the front panel to enable the RF The green led near the button will turn on Fig 11 RF ON OFF button f On the LCD from the front panel go to menu 02 Power FWD and set the Set Pout to the m...

Page 12: ...Fig 13 500W RF amplifier module Fig 14 1KW RF amplifier module 30W RF DRIVER MODULE The steps below are only for Mozart 500 and 1000 with the indicated values for the other models please see the table...

Page 13: ...have the maximum voltage on the drain of the Q3 mosfet The approximate voltage is 18 5V Fig 15 30W RF module RT4 adjust b Adjust the RT2 trimmer to have a voltage drop of 20mV on the R22 resistor Fig...

Page 14: ...5V Mozart 50 80mV 18 5V Mozart 150 5mV 2 5mV 18 5V Mozart 300 10mV 5mV 18 5V Mozart 500 20mV 10mV 18 5V Mozart 1000 20mV 10mV 18 5V d Press RF ON OFF button on the front panel to disable the RF and sw...

Page 15: ...b Switch on the amplifier and check if the Set Pout is set to maximum on the 02 Power Fwd menu on the display If not set the output power to maximum c Press RF ON OFF button on the front panel to enab...

Page 16: ...s d Press RF ON OFF button on the front panel to disable the RF Note this procedure must be made for all frequency 87 5MHz 98MHz and 108MHz To change the frequency go to main 01 Frequency on the displ...

Page 17: ...Set REFL warning d Press RF ON OFF button on the front panel to enable the RF e Disconnect the 50ohm load from the rear of the amplifier f On the 001 000166 02 board adjust the RT5 trimmer to set the...

Page 18: ...ust NOTE After 5 attempts to increase the FWD power the amplifier will go in shutdown state The ALARM led near the button will turn ON and the RF ON led will be turned OFF Press RESET ALARM button to...

Page 19: ...10 Fig 25 FOLD BACK REFL and REFL WARNING are set to 10 j Press RF ON OFF button on the front panel to enable the RF k Disconnect the 50ohm load from the output of the amplifier The led WARNING will b...