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Eclipse Series

RF Technology

November, 2001

PA220 Amplifier

Operation and Maintenance Manual

This manual is produced by RF Technology Pty Ltd

10/8 Leighton Place, Hornsby 2077 Australia

Содержание Eclipse PA220

Страница 1: ...chnology rfinfo rftechnology com au November 2001 PA220 Amplifier Operation and Maintenance Manual This manual is produced by RF Technology Pty Ltd 10 8 Leighton Place Hornsby 2077 Australia Copyright...

Страница 2: ...icator 8 2 7 Over Temperature Protection 8 3 Field Alignment Procedures 8 3 1 Output Power Level 8 3 2 Tuning Procedure 9 4 Specifications 9 4 1 Description 9 4 2 Physical Configuration 10 4 3 Front P...

Страница 3: ...RF Technology PA220 Page 3 CONTENTS CONTENTS A Engineering Diagrams 12 A 1 Block Diagram 12 A 2 Circuit Diagrams 12 A 3 Component Overlay Diagrams 12 B Parts List 17 B 1 PA220 05 9105 0220 17...

Страница 4: ...rack typically 20 Amperes for a 100W transmitter amplifier Owing to the current drain power supply lines should be cabled to the power amplifier separately and using heavy gauge wire to minimise volt...

Страница 5: ...ensing authority Failure to do so may result in penalties being imposed by the licensing authority Output Power The output power is set by RV2 This is nominally set to 100 Watts 50dBm but may be set t...

Страница 6: ...line low will reduce output power Voltages below 0 5V will reduce the output by more than 20dB A pull down current of approximately 1mA is required 2 Circuit Description The following descriptions sho...

Страница 7: ...ors is proportional to the forward and reflected voltage components 2 4 Low Pass Filter A low pass filter consisting of L12 14 and C39 42 reduces the harmonic components to less than 80dBc The filter...

Страница 8: ...90 Celcius the resistance of RT1 increases and Q5 is turned ON This causes the TEMP LED to come on and also reduces the dc reference voltage to the output power error amplifier U1d The input power wi...

Страница 9: ...e RF output power adjust C10 C24 C102 C112 C58 C59 C104 and C114 to obtain maximum output 4 Measuring the collector currents of Q1 and Q2 at the test socket adjust C58 and C59 to reduce and balance th...

Страница 10: ...4 3 Front Panel Indicators and Test Points 4 3 1 Indicators Power Green LED RF Power Yellow LED Over Temperature Red LED 4 3 2 Test Points Forward Power Voltage to ground 0 4V uncalibrated pin 4 gnd...

Страница 11: ...output for air temperature below 40C Derate linearly above 40C to 5 at 70C 4 7 Spurious and Harmonics Less than 1uW at any harmonic of the transmit frequency 4 8 Heatsink Temperature The heatsink temp...

Страница 12: ...iven in table 1 4 10 4 9 Pin Connector A front panel 9 pin D shell connector provides analogue voltages for testing purposes A Engineering Diagrams A 1 Block Diagram Figure 1 shows the block signal fl...

Страница 13: ...RF Technology PA220 Page 13 A ENGINEERING DIAGRAMS A 1 wiring and block diagrams Figure 1 The block circuit diagram of the PA220 Amplifier...

Страница 14: ...Page 14 RF Technology PA220 A 1 Wiring and block Diagrams A ENGINEERING DIAGRAMS Figure 2 The chassis wiring diagram of the PA220 Amplifier...

Страница 15: ...RF Technology PA220 Page 15 A ENGINEERING DIAGRAMS A 2 Circuit Diagrams Figure 4 The component circuit diagram of the power amplifier...

Страница 16: ...Page 16 RF Technology PA220 A ENGINEERING DIAGRAMS A 3 Component Overlay Diagrams Figure 5 The component overlay diagram of the PA220 amplifier...

Страница 17: ...20 25V 41 2225 06U8 C29 Cap 10pF 5 63V NPO SM1206 46 3300 010P C22 Cap 10pF 5 250V Mica 48 3002 010P C30 Cap 10pF 5 63V NPO SM1206 46 3300 010P C31 Cap 100pF 5 63V NPO SM1206 46 3300 100P C32 Cap 100p...

Страница 18: ...uctor 1uH 10 SM1008 37 3320 01U0 L12 2 5T 37 2635 0002 L13 2 5T 37 2635 0002 L14 2 5T 37 2635 0002 L2 COILCRAFT 132 7 37 2021 0007 L3 COILCRAFT 132 7 37 2021 0007 L4 FERRITE BEAD 37 1022 0001 L5 6 HOL...

Страница 19: ...33K R41 Resistor 100R 5 25W Axial 51 1040 0100 R7 Resistor 10R 5 25W Axial 51 1040 0010 R8 Resistor 10R 5 25W Axial 51 1040 0010 R9 Resistor 100 Ohm non inductive 51 RF40 0100 RT1 THERMISTOR 54 0400 0...

Страница 20: ...C 6 35 F Crimp 35 1635 0001 End of assembly Bottom Power amp 80 9127 0001 Top Power amp 80 9126 0001 Rear panel Power amp 80 9125 0001 Front sub panel Power amp 80 9128 0001 Front panel Power amp 80 9...