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Summary of Contents for RF Technology Pa50 Eclipse Series
- Page 1 Eclipse Series RF Technology rfinfo@rftechnology.com.au October 2003 Revision 2 PA50 Amplifier Operation and Maintenance Manual This manual is produced by RF Technology Pty Ltd 10/8 Leighton Place, Hornsby NSW 2077 Australia Copyright © 2001 RF Technology...
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Page 2: Table Of Contents
Internal Adjustments Test Points I/O Connections Circuit Description Driver Stage Output Stage Low Pass Filter Bias Supply Reflectometer Metering Circuits Specifications Physical Configuration Indicators and Test Points Electrical Specifications 6.3.1 Power Requirements Engineers Drawings Parts List Page 2 RF Technology PA50... -
Page 3: Operating Instructions
Specifications may vary from those given in this document in accordance with requirements of local authorities. RF Technology equipment is subject to continual improvement and RF Technology reserves the right to change performance and specification without further notice. Operating Instructions The PA50 is part of the Eclipse range of modular base station equipment. -
Page 4: Test Points
Pin 19 Pin 20 Pin 18 VREFB Pin 6 Forward Volts Pin 8 Reverse Volts Pin 21 Temperature BNC Connector: RF Input from exciter approximately1 Watt N Connector: RF Output to antenna, up to 150 Watts Page 4 RF Technology PA50... -
Page 5: Circuit Description
Q100 Q101 and Q102 for adjustment to their quiescent currents. U205 and R213, R214 and R215 provide the bias voltages. U200D provides a decreasing output voltage with increasing temperature. The resistive dividers R214, R229 and RF Technology PA50 Page 5... -
Page 6: Reflectometer
J205 on, J203 and J204 off U202 and associated components provide a 3 wire serial interface to allow the exciter to interrogate the A to D converter. U200C is a comparator that switches the fan on Page 6 RF Technology PA50... -
Page 7: Specifications
26 to 30VDC ( available O/P power reduced below 26V Current Drain Approx 10A at 28V and 100W O/P Polarity Negative Ground Frequency Range PA50A25 to 32MHz PA50B 30 to 40MHz PA50C 38 to 50MHz RF Technology PA50 Page 7... - Page 8 Antenna connector - N type female on rear panel Power and exciter interface - DB25 Female on rear panel RF Input - BNC female on rear panel Test connector - DB9 female on front panel Page 8 RF Technology PA50...
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Page 9: A Engineers Drawings
A ENGINEERING DRAWINGS A Engineering Drawings 1. Block Diagram 2. Main PCB Schematics ( 3 sheets ) RF Technology PA50 Page 9... -
Page 10: B Parts List
Capacitor 10nF 10% 50V NPO 1812 46/82N1/010N C129 Capacitor 10nF 10% 50V NPO 1812 46/82N1/010N C200 Capacitor 100nF 10% 63V X7R 1206 46/3310/100N C201 Capacitor 100nF 10% 63V X7R 1206 46/3310/100N C202 Capacitor 100nF 10% 63V X7R 1206 46/3310/100N Page 10 RF Technology PA50... - Page 11 Inductor 315nH 11 turns CW 6.35mm ID 37/0635/1511 L105 Inductor 315nH 11 turns CW 6.35mm ID 37/0635/1511 L107 Inductor 247nH 9 turns CW 6.35mm ID 37/0635/1509 L200 Inductor 33uH 10% >100mA 1812 37/3320/P102 Q100 Transistor MRF174 RF Power mosfet 27/3020/MRF174 RF Technology PA50 Page 11...
- Page 12 Resistor 15K precision 0.5% 50ppm 0805 51/85P1/015K R137 Resistor 15K precision 0.5% 50ppm 0805 51/85P1/015K R138 Resistor 2R7 10% 3W axial wirewound 51/1053/02R7 R200 Resistor 15K 1% 200ppm 0805 51/8511/015K R201 Resistor 6K8 1% 200ppm 0805 51/8511/06K8 Page 12 RF Technology PA50...
- Page 13 Capacitor 27pF 1% 500V Silver Mica 1210 48/3003/027P Capacitor 33pF 1% 500V Silver Mica 1210 48/3003/033P Capacitor 18pF 1% 500V Silver Mica 1210 48/3003/018P Capacitor 3p3F +/- 0.1pF 500V Silver Mica 1210 48/3003/03P3 Capacitor 56pF 1% 500V Silver Mica 1210 48/3003/056P RF Technology PA50 Page 13...
- Page 14 Capacitor 100pF 1% 500V Silver Mica 1210 48/3003/100P Capacitor 47pF 1% 500V Silver Mica 1210 48/3003/047P Not Fitted Capacitor 82pF 1% 500V Silver Mica 1210 48/3003/082P Capacitor 10pF +/- 0.1pF 500V Silver Mica 1210 48/3003/010P Page 14 RF Technology PA50...
- Page 15 C1001 Not Fitted Inductor 121nH 5 turns CW 6.35mm ID 37/0635/1505 Inductor 150nH 6 turns CW 6.35mm ID 37/0635/1506 Inductor 184nH 7 turns CW 6.35mm ID 37/0635/1507 Inductor 184nH 7 turns CW 6.35mm ID 37/0635/1507 RF Technology PA50 Page 15...
- Page 16 Front Panel PCB Resistor 100R 5% 0.25W axial 51/1040/0100 Diode LED Yellow RA 21/1010/LEDY Diode LED Red RA 21/1010/LEDR Diode LED Green RA 21/1010/LEDG Connector 10 way header 35/2501/0010 Connector DB9/F RA PCB mount 35/5012/009F Page 16 RF Technology PA50...
- Page 18 Driver Stage O/P Stage Low Pass Filter Reflectometer RF Input RF Input Q100 Drive Q100 Drive Unfiltered RF Unfiltered RF Filtered RF Filtered RF RF Output RF Ouput Q101 Drive Q101 Drive Driver Drain Current Q100 Bias Fwd Volts Driver Bias Q101 Bias O/P Drain current Rev Volts Bias Supply...
- Page 19 D207 180K C203 BIAS-DRV Title PA50 100W Power Amplifier BZX84C10 100nF Size: Number: Revision: RF Technology Pty Ltd Print Date: 21-Feb-2002 00:02:56 Sheet Unit 10, 8 Leighton Place Bias Voltage Adjustments Hornsby, NSW 2077 Rev. Release Date: Originator: Australia RF Output Indicator File: C:\Program Files\Design Explorer 99 SE\rft\PA50.ddb - HFPA_Support.Sch...
- Page 20 ECO No. Description of Change BIAS-DRV Title PA50 100W Power Amplifier C116 C106 Size: Number: Revision: 100nF RF Technology Pty Ltd Print Date: 21-Feb-2002 00:01:56 Sheet Unit 10, 8 Leighton Place Hornsby, NSW 2077 Rev. Release Date: Originator: Australia File:...
- Page 21 +28V Power LED CON10 RF Output LED Over Temperature LED +28V RevPwr FwdPwr O/P_DCurr Drv_DCurr Title Size Number Revision Date: 21-Feb-2002 Sheet File: C:\Program Files\Design Explorer 99 SE\rft\PA50.ddb Drawn By:...
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Page 22: Low Pass Filter
PA50 100W Power Amplifier C121 120pF 82pF 82pF C130 470pF 330pF 180pF C131 100pF 100pF 68pF Size: Number: Revision: RF Technology Pty Ltd C132 120pF 100pF 68pF C133 220pF 180pF 180pF Print Date: 21-Feb-2002 00:00:37 Sheet Unit 10, 8 Leighton Place C1000 180pF...
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