Related Manuals for TPL PA8-1AA
Summary of Contents for TPL PA8-1AA
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Page 1: Service Manual
SERVICE MANUAL PA8-1AA RF POWER AMPLIFIER 3370 SAN FERNANDO RD., #206 LOS ANGELES, CA 90065 PHONE: (323)-256-3000 FAX: (323)-254-3210 E Mail: service@tplcom.com L-PA8-1AA-S/B9... -
Page 2: Table Of Contents
TABLE OF CONTENTS Specifications................2 Theory of Operation...............3 Safety Information..............3 Type Acceptance..............4 Installation................5 Operating Precautions............5 Circuit description..............6 Maintenance and Repairs............7 Replaceable Parts..............7 Fault Isolation Procedures............8 Warranty.................9 Appendix................ -
Page 3: Specifications
POWER AMPLIFIER SPECIFICATION PA8-1AA Frequency: 806-870 MHz Voltage: 11-17 VDC Input Power: 1-3 Watts Output Power: 12-25 Watts Mode: r h t , t u r h t e t t i t a r e i i t a... -
Page 4: Theory Of Operation
THEORY OF OPERATION The PA8-1AA RF Power Amplifier is designed to amplify an RF signal with a frequency range of 806 - 870 MHz from 1-3 Watts at the input to 12-25 Watts at the output. The amplifier is a part of a half duplex system. -
Page 5: Type Acceptance
This Amplifier has been tuned to the frequency specified. There is no internal adjustment. CAUTION! Check the amplifier upon receipt for visible damage. If any is noticed, please call TPL at 800 HI POWER to request an RMA number (Return Material Authorization). If purchased through a dealer, ask them to follow this procedure for best results. -
Page 6: Installation
INSTALLATION Mount the amplifier as close to the antenna as practical. Keep coaxial cable runs short, avoiding sharp bends and pinching. The antenna should be matched to an VSWR of better than 1.2:1 for best results. Higher VSWR will degrade the performance. Mount the amplifier away from sources of heat, and where air can freely circulate around it. -
Page 7: Circuit Description
TERMINATIONS: The efficiency of this amplifier will degrade if it is operated into anything but a 50 Ohm load. Lowered output, increased current drain, higher operating temperature, and reduced life may result. C I R C U I T D E S C R I P T I O N The amplifier is compromised of a few main blocks (see Block Dia. -
Page 8: Maintenance And Repairs
The amplifier does not normally require any maintenance or adjustments. In case of a serious failure, it is recommended that the amplifier be returned to the TPL Service Department. If the unit is out of warranty and it is desired to do a field repair, it is suggested that the complete Printed Circuit Board assembly be replaced. -
Page 9: Fault Isolation Procedures
Fault Isolation Procedure For part locations, refer to the silk screen on the printed circuit board. In order to isolate a fault to one of the above field replaceable parts, it is suggested that the technician follow a step-by step procedure as follows: 1) Check that 13.8 VDC is present at the DC connector. -
Page 10: Warranty
WARRANTY TPL Communications has tested and found this unit to function properly and to operate within the parameters of its stated specifications. TPL Communications warrants that this product is free from defects in material and workmanship. If found to be defective within two years from the customer’s date of purchase, the manufacturer, at its discretion, will either repair or replace the unit at no cost, provided the unit is delivered by the owner to the manufacturer intact.
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