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GL-T8200 1- to 25-Watt 900-MHz Power Amplifier

Glenayre Document Number: 9110.01306

List of Tables

Rev. A: 03/23/99

Page: -vi

Copyright © 1999 Glenayre

Print Date: 04/14/99

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Summary of Contents for GL-T8200

Page 1: ...tice Copyright 1999 Glenayre All rights reserved No part of this work may be reproduced or copied in any form or by any means graphic electronic or mechanical including photocopying recording taping o...

Page 2: ...900 MHz Power Amplifier Glenayre Document Number 9110 01306 Document Change Record Rev A 03 23 99 Copyright 1999 Glenayre Print Date 03 23 99 Document Change Record Revision Revision A Date 03 23 99...

Page 3: ...Signal and Power Connections 3 3 3 2 3 Isolator 3 4 4 INSTALLATION AND SETUP 4 1 4 1 Cabinet Installation and External Cabling 4 1 4 1 1 Tools and Equipment Required 4 1 4 1 2 Inspection 4 1 4 1 3 Ra...

Page 4: ...RF Input Power 6 6 6 5 5 28 Volt External Supply 6 6 6 5 6 36 Volt Internal Supply 6 6 6 5 7 5 Volt Internal Supplies 6 7 6 5 8 Temperature 6 7 7 MAINTENANCE 7 1 7 1 Cleaning 7 1 7 2 Power Calibratio...

Page 5: ...2001 lof Print Date 04 14 99 Copyright 1999 Glenayre Page iii List of Figures Figure 3 1 PA Front Isometric View 3 2 Figure 3 2 Top View of PA RF Compartments Showing Internal Assemblies 3 3 Figure 4...

Page 6: ...GL T8200 1 to 25 Watt 900 MHz Power Amplifier Glenayre Document Number 9110 01306 List of Figures Rev A 03 23 99 Page iv Copyright 1999 Glenayre Print Date 04 14 99...

Page 7: ...ables Table 1 1 Applicable Documents 1 1 Table 1 2 Manual Sections 1 2 Table 2 1 Power Amplifier Specifications 2 1 Table 4 1 Required Tools and Equipment 4 1 Table 4 2 PA I O Connections 4 2 Table 4...

Page 8: ...GL T8200 1 to 25 Watt 900 MHz Power Amplifier Glenayre Document Number 9110 01306 List of Tables Rev A 03 23 99 Page vi Copyright 1999 Glenayre Print Date 04 14 99...

Page 9: ...le 1 1 for a listing and function of these manuals 1 3 Manual Sections Table 1 2 lists the sections of this manual with a summary of their contents Table 1 1 Applicable Documents document part number...

Page 10: ...aracteristics of power amplifier 4 Installation and Setup initial installation and activation of power amplifier 5 Operation operation of power amplifier 6 Theory of Operation detailed functional desc...

Page 11: ...xciter bandwidth RF input power mW factory set attenuation 200 400 RF input connector type N female RF output connector output of PA type N female input and output RF impedance ohms 50 VSWR max 1 5 dc...

Page 12: ...GL T8200 1 to 25 Watt 900 MHz Power Amplifier Glenayre Document Number 9110 01306 SPECIFICATIONS Rev A 03 23 99 Page 2 2 Copyright 1999 Glenayre Print Date 03 29 99...

Page 13: ...chassis including convection fins and one fan The chassis contains a PA board which contains metering circuitry power distribution circuitry and RF amplification circuitry 3 1 1 Mounting Provisions T...

Page 14: ...T8200 1 to 25 Watt 900 MHz Power Amplifier Glenayre Document Number 9110 01306 DESCRIPTION Rev A 03 23 99 Page 3 2 Copyright 1999 Glenayre Print Date 05 10 99 v0222 hgl Figure 3 1 PA Front Isometric V...

Page 15: ...the PA chassis The monitoring of the RF amplifier system is accomplished by the digital exciter through the PA board located in the PA chassis 3 2 1 RF Path The PA chassis receives the exciter output...

Page 16: ...er control and monitoring The VSWR detection circuit of the third isolator is the only means of detecting whether there is an antenna fault which can then be detected and reported reject load The trip...

Page 17: ...ystem manual also Rackup variations are generally not possible Cooling and cabling restraints require that equipment pieces remain racked according to standard configurations 4 1 4 External Cabinet Eq...

Page 18: ...5 2 The RF Output Forward and Reflected Dc Samples The RF output forward and reflected dc sample from the isolator are digitized and routed to the DSP exciter High reflected power from either the ante...

Page 19: ...ich include instructions for these applicable setup procedures adjust forward power set low power alarm Figure 3 2 shows controls test points and fuses on the PA board Table 4 3 Exciter PA Connector P...

Page 20: ...GL T8200 1 to 25 Watt 900 MHz Power Amplifier Glenayre Document Number 9110 01306 INSTALLATION AND SETUP Rev A 03 23 99 Page 4 4 Copyright 1999 Glenayre Print Date 05 11 99 Figure 4 1 PA Rear View...

Page 21: ...nt Date 05 11 99 Copyright 1999 Glenayre Page 4 5 Table 4 4 PA Board Fuses PA board fuse label connection F1 3A powers remaining circuitry of PA board F2 5A R9000 J2 2 F3 3A RX J2 6 F4 5A C2000 J2 8 F...

Page 22: ...GL T8200 1 to 25 Watt 900 MHz Power Amplifier Glenayre Document Number 9110 01306 INSTALLATION AND SETUP Rev A 03 23 99 Page 4 6 Copyright 1999 Glenayre Print Date 05 11 99...

Page 23: ...to VDT manual 5 2 1 Turn PA On and Off Power is supplied to the transmitter and PA whenever the power supply is energized 5 2 2 Turn Fan On and Off The fan does not contain an on off switch but turns...

Page 24: ...GL T8200 1 to 25 Watt 900 MHz Power Amplifier Glenayre Document Number 9110 01306 OPERATION Rev A 03 23 99 Page 5 2 Copyright 1999 Glenayre Print Date 05 10 99...

Page 25: ...Circuit Regulators The PA board has three on board regulators which supply power to several circuits on the PA board Refer to Table 6 1 for the PA board voltages test points and functions 6 2 RF Flow...

Page 26: ...assis to the exciter and to distribute dc power to the exciter R9000 receiver and C2000 Most of the information passed to the exciter is in the form of voltages that represent powers currents supply v...

Page 27: ...gulators voltages and test points 6 3 2 Internally Generated Voltages 6 3 2 1 36 Volt Internal Supply The 36 volt supply is derived with a voltage doubling circuit This supply has a very low current s...

Page 28: ...to 25 Watt 900 MHz Power Amplifier Glenayre Document Number 9110 01306 THEORY OF OPERATION Rev A 03 23 99 Page 6 4 Copyright 1999 Glenayre Print Date 05 10 99 sheet1 plt Figure 6 2 PA Board Functiona...

Page 29: ...umber 9110 01306 GL T8200 1 to 25 Watt 900 MHz Power Amplifier Rev A 03 23 99 THEORY OF OPERATION 25w82006 Print Date 05 10 99 Copyright 1999 Glenayre Page 6 5 sheet2 plt Figure 6 2 PA Board Functiona...

Page 30: ...fferent channels and is selected by the microcontroller through the multiplexor select lines 0 2 6 4 1 2 Analog 3 Output Pins 2 of the D sub 15 pin interface connector is the analog 3 output which goe...

Page 31: ...losses in the PA The lower limit is 1 watt The upper limit for the forward power reading is 25 watts This does not cause an interrupt to the exciter but if a reading exceeds this level the exciter sh...

Page 32: ...5 volts Exceeding either parameter results in an alarm condition only 6 5 8 Temperature The ambient temperature in the PA has an upper limit of 85 C If this limit is exceeded the transmitter shuts do...

Page 33: ...to module failure Dirt on the printed circuit boards can also lead to other types of failures Most dust and dirt can be removed with a vacuum cleaner Do not use air pressure to blow dust and dirt from...

Page 34: ...GL T8200 1 to 25 Watt 900 MHz Power Amplifier Glenayre Document Number 9110 01306 MAINTENANCE Rev A 03 23 99 Page 7 2 Copyright 1999 Glenayre Print Date 03 26 99...

Page 35: ...Voltage Verification Once powered verify that the fan is operating The fan is located on the rear of the PA Also insure that air flow is not obstructed inside or outside of the transmitter cabinet ar...

Page 36: ...r which is running a communication program with VT 100 emulation and has a 2400 baud modem The GL N2000 console equipped with version 3 5 or later software can also perform an over the air connection...

Page 37: ...9 1 PA 9 1 1 Removal Note Before removing the PA as a result of fault isolation be certain that the fault is with it The exciter and interconnecting wiring are essential to proper operation of the pow...

Page 38: ...GL T8200 1 to 25 Watt 900 MHz Power Amplifier Glenayre Document Number 9110 01306 REMOVAL AND REINSTALLATION Rev A 03 23 99 Page 9 2 Copyright 1999 Glenayre Print Date 03 26 99...

Page 39: ...tice Copyright 1999 Glenayre All rights reserved No part of this work may be reproduced or copied in any form or by any means graphic electronic or mechanical including photocopying recording taping o...

Page 40: ...att 900 MHz Transmitter System Glenayre Document Number 9110 01305 Document Change Record Rev A 03 24 99 Copyright 1999 Glenayre Print Date 03 24 99 Document Change Record Revision A Date 03 24 99 Cha...

Page 41: ...SCRIPTION 3 1 3 1 Physical Description 3 1 3 1 1 Mounting Provisions 3 1 3 1 2 Exciter 3 1 3 1 3 Power Amplifier PA 3 2 3 1 4 Power Supply 3 2 3 1 5 Video Display Terminal VDT 3 2 3 2 Simplified Pagin...

Page 42: ...n and Off 5 1 5 2 2 Turn Fans On and Off 5 1 5 2 3 Key and Unkey PA 5 1 6 THEORY OF OPERATION 6 1 6 1 Cabinet Power Distribution 6 1 6 1 1 Ac Power Input 6 1 6 1 2 Dc Power Distribution 6 1 6 2 Cabine...

Page 43: ...00 MHz Transmitter System Rev A 03 24 99 Table of Contents 8200sys1 toc Print Date 04 14 99 Copyright 1999 Glenayre Page iii 9 REMOVAL AND REINSTALLATION 9 1 9 1 Power Supply 9 1 9 2 Exciter Removal a...

Page 44: ...GL T8200 1 to 25 Watt 900 MHz Transmitter System Glenayre Document Number 9110 01305 Table of Contents Rev A 03 24 99 Page iv Copyright 1999 Glenayre Print Date 04 14 99...

Page 45: ...itter System Rev A 03 24 99 List of Figures 8200sys1 lof Print Date 04 14 99 Copyright 1999 Glenayre Page v List of Figures Figure 3 1 Transmitter Front View 3 3 Figure 3 2 Transmitter Simplified Bloc...

Page 46: ...GL T8200 1 to 25 Watt 900 MHz Transmitter System Glenayre Document Number 9110 01305 List of Figures Rev A 03 24 99 Page vi Copyright 1999 Glenayre Print Date 04 14 99...

Page 47: ...m Rev A 03 24 99 List of Tables 8200sys1 lot Print Date 04 14 99 Copyright 1999 Glenayre Page vii List of Tables Table 1 1 Applicable Documents 1 1 Table 1 2 Manual Sections 1 2 Table 2 1 Specificatio...

Page 48: ...GL T8200 1 to 25 Watt 900 MHz Transmitter System Glenayre Document Number 9110 01305 List of Tables Rev A 03 24 99 Page viii Copyright 1999 Glenayre Print Date 04 14 99...

Page 49: ...s the sections in this manual and provides a brief descrip tion of the content of each section Table 1 1 Applicable Documents document part number description 9100 XXXXX 9100 XXXXX assembled GL T8200...

Page 50: ...0 Phone 65 483 8787 Fax 44 1908 484801 Fax 65 483 9663 For additional Glenayre contacts refer to www glenayre com corporate contacts default asp Table 1 2 Manual Sections section contents 1 General in...

Page 51: ...lied and covers only those items manufactured by Glenayre Equipment supplied by but not manufactured by Glenayre is subject only to any warranty offered by the manufacturer of said equipment 1 4 2 Ser...

Page 52: ...GL T8200 1 to 25 Watt 900 MHz Transmitter System Glenayre Document Number 9110 01305 GENERAL Rev A 03 24 99 Page 1 4 Copyright 1999 Glenayre Print Date 05 10 99...

Page 53: ...nal Institute of Standards and Technology NIST Table 2 1 Specifications characteristic unit of measurement condition model specification Electrical RF output power W continuous duty at PA RF output co...

Page 54: ...enayre Print Date 05 10 99 other Contact Glenayre Sales for country by country type approval infor mation Electrical power supply ac input voltage Vac 195 to 265 ac input frequency Hz 47 to 440 ac inp...

Page 55: ...he exciter and may be packaged with blank panels 3 1 2 Exciter The exciter is one rack unit high It is racked where shown and is held in place with four machine screws The top cover is removable for a...

Page 56: ...A video display terminal VDT is not part of the racked up equipment instead it is a piece of test equipment which the user brings to the site when setup maintenance or trouble shooting is necessary o...

Page 57: ...ayre Document Number 9110 01305 GL T8200 1 to 25 Watt 900 MHz Transmitter System Rev A 03 24 99 DESCRIPTION 8200sys3 Print Date 05 10 99 Copyright 1999 Glenayre Page 3 3 Figure 3 1 Transmitter Front V...

Page 58: ...control logic from the transmitter controller or the locally operated VDT Both the exciter and transmitter controller receive continuous status reports from the microprocessor The exciter is the cont...

Page 59: ...Site Audio Modulation Signal Flow Modulation information arrives at the site either through a link receiver or by wireline The digital signal is first routed through the transmitter controller which...

Page 60: ...03 24 99 Page 3 6 Copyright 1999 Glenayre Print Date 05 10 99 3 3 3 Simplified Block Diagram Description Refer to Figure 3 2 The interface between the transmitter and the transmitter controller is the...

Page 61: ...hough it is racked with paging site equipment The transmitter controller has control functions which include these transmitter alarm gathering transmitter alarm dispatching simulcast parameter impleme...

Page 62: ...GL T8200 1 to 25 Watt 900 MHz Transmitter System Glenayre Document Number 9110 01305 DESCRIPTION Rev A 03 24 99 Page 3 8 Copyright 1999 Glenayre Print Date 05 10 99...

Page 63: ...o portions of the equipment and options specified on the sales order the portion presently being shipped and the portion still on back order It does not report the portion of the sales order that has...

Page 64: ...d be placed as close as possible to the transmitting antenna and to the primary power source as a secondary consideration To gain reasonable access to the back 30 inches 75 cm of free space should be...

Page 65: ...ly DC OUTPUT and the large jacks in the middle of the PA as viewed from the rear The PA board has fusing which connects to the transmitter controller DSP exciter receiver or any other equipment 4 2 5...

Page 66: ...al is via a coaxial jumper from exciter J3 to PA RF input left side of PA PA transmitting antenna PA RF output connector point at which rated power is measured goes to a type N connector on the cabine...

Page 67: ...mber 9110 01305 GL T8200 1 to 25 Watt 900 MHz Transmitter System Rev A 03 24 99 INSTALLATION AND SETUP 8200sys4 Print Date 05 10 99 Copyright 1999 Glenayre Page 4 5 Figure 4 1 Rear View Showing Dc and...

Page 68: ...GL T8200 1 to 25 Watt 900 MHz Transmitter System Glenayre Document Number 9110 01305 INSTALLATION AND SETUP Rev A 03 24 99 Page 4 6 Copyright 1999 Glenayre Print Date 05 10 99...

Page 69: ...ECKOUT AND TROUBLESHOOTING Section 9 REMOVAL AND REINSTALLATION Also refer to the VDT manual 5 2 1 Turn Transmitter On and Off The transmitter turns off and on whenever the power supply is energized W...

Page 70: ...GL T8200 1 to 25 Watt 900 MHz Transmitter System Glenayre Document Number 9110 01305 OPERATION Rev A 03 24 99 Page 5 2 Copyright 1999 Glenayre Print Date 04 14 99...

Page 71: ...rs which route power from the power supply to PA circuits and other equipment within the rack cabinet 6 2 Cabinet Signal Distribution Refer to Figure 4 2 6 2 1 Control Data and Modulation Paths The tr...

Page 72: ...GL T8200 1 to 25 Watt 900 MHz Transmitter System Glenayre Document Number 9110 01305 THEORY OF OPERATION Rev A 03 24 99 Page 6 2 Copyright 1999 Glenayre Print Date 03 26 99...

Page 73: ...l mode 2 Key transmitter 3 Monitor power amplifier currents on VDT 4 Make comparison between data sheet and monitor Monitored currents should not vary more than ten percent from data sheet levels An e...

Page 74: ...GL T8200 1 to 25 Watt 900 MHz Transmitter System Glenayre Document Number 9110 01305 MAINTENANCE Rev A 03 24 99 Page 7 2 Copyright 1999 Glenayre Print Date 03 24 99...

Page 75: ...supply PWR ON indicator is on 2 On G L exciter front panel DC POWER indicator is on 3 On the transmitter controller the POWER indicator is on 4 On receiver if used the POWER indicator is on 8 1 2 VDT...

Page 76: ...at 1 2 5 Using VDT read and record PA currents 6 Unkey transmitter 7 Remove dummy load 8 Key transmitter Transmitter shuts down immediately indicating that transmitter has detected excessive VSWR and...

Page 77: ...upply Refer to the power supply manual for removal and reinstallation of the power supply 9 2 Exciter Removal and Reinstallation Also refer to the exciter manual The local reference oscillator if used...

Page 78: ...t be for the correct frequency band firmware chips must be of the correct revision and type controller interface must be of the proper type and revision for interfacing with the trans mitter controlle...

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