Glenayre GL-T8500 User Manual Download

Page: 43 / 46

Glenayre Document Number: 9110.00160

250-Watt Gold Line Power Amplifier

Issue 1, Rev. C: 10/21/96

REMOVAL AND REINSTALLATION

Print Date: 12/17/96

Page: 9-5

Figure 9-2 PA RF Module Removal and Reinstallation (continued)

Summary of Contents for GL-T8500

Page 1: ...nayre 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 or information retrieval...

Page 2: ...60 Document Change Record Issue 1 Rev C 10 21 96 Copyright 1996 Glenayre Print Date 12 17 96 Document Change Record Revision 0 Preliminary Date 05 04 95 Changes none original Issue Rev B Date 02 02 96...

Page 3: ...1 3 2 2 1 Driver Board 3 1 3 2 2 2 PA Boards 3 4 3 2 2 3 Combiner Board 3 4 3 2 2 4 Metering Board 3 4 3 2 3 PA Rear 3 4 3 2 3 1 Isolator 3 4 3 2 3 2 Fan 3 4 3 2 3 3 Equipment Connectors 3 4 3 3 Funct...

Page 4: ...an Power 6 2 6 2 RF Distribution 6 3 6 2 1 Driver Board RF Flow 6 3 6 2 2 PA Board RF Flow 6 4 6 2 3 Combiner Board RF Flow 6 4 6 2 4 Isolator RF Flow 6 5 6 3 Control Distribution 6 5 6 3 1 AGC Signal...

Page 5: ...lifier Rear View 3 3 Figure 3 3 PA Simplified Block Diagram 3 5 Figure 5 1 Front Panel View with Cover Removed 5 2 Figure 6 1 250 Watt PA Interconnection Diagram 6 8 Figure 6 2 250 Watt PA Functional...

Page 7: ...C 10 21 96 List of Tables Print Date 12 17 96 Copyright 1996 Glenayre Page v List of Tables Table 1 1 Applicable Documents 1 1 Table 1 2 Manual Sections 1 2 Table 2 1 Power Amplifier Specifications 2...

Page 9: ...te without additional Gold Line manuals Refer to Table 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...

Page 10: ...s 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 description of c...

Page 11: ...amplifier Table 2 1 Power Amplifier Specifications measurement specification height 8 75 in 22 23 cm width 19 in 48 3 cm depth 8 in 20 3 cm weight 26 lb 12 kg RF output power 100 250 watts RF bandwidt...

Page 13: ...y by removed while the PA is mounted in the rack Two quarter turn fasteners secure the front panel to the PA Most PA circuit boards may be replaced while the PA is mounted in the rack 3 2 2 PA Front F...

Page 14: ...d Line Power Amplifier Glenayre Document Number 9110 00160 DESCRIPTION Issue 1 Rev C 10 21 96 Page 3 2 Copyright 1996 Glenayre Print Date 12 17 96 v0222 hgl Figure 3 1 250 Watt 900 MHz Power Amplifier...

Page 15: ...cument Number 9110 00160 250 Watt Gold Line Power Amplifier Issue 1 Rev C 10 21 96 DESCRIPTION Print Date 12 17 96 Copyright 1996 Glenayre Page 3 3 v0221 hgl Figure 3 2 250 Watt 900 MHz Power Amplifie...

Page 16: ...ring board contains connectors J1 J2 J4 J5 and P1 on the front and J3 on the back The board contains one LED DC POWER 3 2 3 PA Rear Figure 3 2 shows the back view of the PA The PA back panel conceals...

Page 17: ...F amplifier provide sample voltages to the metering circuit The amplified output of the RF amplifier is applied to the input type N connector on the isolator 3 3 2 Isolator The isolator prevents inter...

Page 18: ...6 Page 3 6 Copyright 1996 Glenayre Print Date 12 17 96 3 3 3 Metering The metering board performs control and status reporting for the PA The metering board accepts a 25 Vdc power input through the 1...

Page 19: ...stall the PA refer to Section 9 4 2 Setup Setup of the PA is performed at the system level using an exciter PA control unit Refer to the GL T8500 system manual The system manual includes instructions...

Page 21: ...until keyed Refer to the power supply manual for turn on and turn off procedures 5 2 2 Turn Fan On and Off The fan does not contain an on off switch but turns on and off whenever the power supply equi...

Page 22: ...t Gold Line Power Amplifier Glenayre Document Number 9110 00160 OPERATION Issue 1 Rev C 10 21 96 Page 5 2 Copyright 1996 Glenayre Print Date 12 17 96 v0224 hgl Figure 5 1 Front Panel View with Cover R...

Page 23: ...y 5V regulator and divider circuitry and 1 2V regulator circuitry LED1 activates to illuminate the DC POWER indicator on the front of the PA 25V components receive operating power These components inc...

Page 24: ...Divider circuit reduces the input to a sample voltage which determines the system PA 13 5V metering Heat sink temperature transducer U17 generates a voltage proportional to the tempera ture of the PA...

Page 25: ...ut and the OK signal results in an exciter output fault The preamplifier module is a three stage RF power amplifier on a single IC The first and third stages are powered by an AGC signal These are the...

Page 26: ...at this location determine the PA board s forward and reflected power metering The combined and monitored RF signal is the PA board s 150 watt RF output 6 2 3 Combiner Board RF Flow The combiner boar...

Page 27: ...nal or a decrease in the total forward power sample causes an increase in the AGC signal This AGC signal provides operating power for the first and third amplifier stages of the preamplifier Divider c...

Page 28: ...age and the control address that directs the multiplexer to route that voltage 6 4 2 PA Fault Signal Flow A PA fault signal is activated when a reflected power threshold is exceeded by the PA1 or PA2...

Page 29: ...ument Number 9110 00160 250 Watt Gold Line Power Amplifier Issue 1 Rev C 10 21 96 THEORY OF OPERATION Print Date 12 17 96 Copyright 1996 Glenayre Page 6 7 v0229 hgl Figure 6 1 250 Watt PA Interconnect...

Page 30: ...Gold Line Power Amplifier Glenayre Document Number 9110 00160 THEORY OF OPERATION Issue 1 Rev C 10 21 96 Page 6 8 Copyright 1996 Glenayre Print Date 12 17 96 v0203 hgl Figure 6 2 250 Watt PA Functiona...

Page 31: ...ent Number 9110 00160 250 Watt Gold Line Power Amplifier Issue 1 Rev C 10 21 96 THEORY OF OPERATION Print Date 12 17 96 Copyright 1996 Glenayre Page 6 9 v0202l hgl Figure 6 3 250 Watt PA Detailed Func...

Page 32: ...Gold Line Power Amplifier Glenayre Document Number 9110 00160 THEORY OF OPERATION Issue 1 Rev C 10 21 96 Page 6 10 Copyright 1996 Glenayre Print Date 12 17 96 v0202r hgl 250 Watt PA Detailed Functiona...

Page 33: ...ument Number 9110 00160 250 Watt Gold Line Power Amplifier Issue 1 Rev C 10 21 96 THEORY OF OPERATION Print Date 12 17 96 Copyright 1996 Glenayre Page 6 11 v0204l hgl Figure 6 4 Metering Board Functio...

Page 34: ...tt Gold Line Power Amplifier Glenayre Document Number 9110 00160 THEORY OF OPERATION Issue 1 Rev C 10 21 96 Page 6 12 Copyright 1996 Glenayre Print Date 12 17 96 0204r hgl Metering Board Functional Di...

Page 35: ...ayre Document Number 9110 00160 250 Watt Gold Line Power Amplifier Issue 1 Rev C 10 21 96 MAINTENANCE Print Date 12 17 96 Copyright 1996 Glenayre Page 7 1 7 MAINTENANCE Refer to the system and VDT man...

Page 37: ...ber 9110 00160 250 Watt Gold Line Power Amplifier Issue 1 Rev C 10 21 96 CHECKOUT AND TROUBLESHOOTING Print Date 12 17 96 Copyright 1996 Glenayre Page 8 1 8 CHECKOUT AND TROUBLESHOOTING Refer to the s...

Page 39: ...Chassis Removal and Reinstallation Figure 9 1 shows details of removing and reinstalling the chassis Calibration of forward and reflected power is required after reinstallation 9 2 PA RF Module Remov...

Page 40: ...Line Power Amplifier Glenayre Document Number 9110 00160 REMOVAL AND REINSTALLATION Issue 1 Rev C 10 21 96 Page 9 2 Copyright 1996 Glenayre Print Date 12 17 96 v0223 hgl Figure 9 1 PA Removal and Rei...

Page 42: ...e Power Amplifier Glenayre Document Number 9110 00160 REMOVAL AND REINSTALLATION Issue 1 Rev C 10 21 96 Page 9 4 Copyright 1996 Glenayre Print Date 12 17 96 v0225 hgl Figure 9 2 PA RF Module Removal a...

Page 43: ...Number 9110 00160 250 Watt Gold Line Power Amplifier Issue 1 Rev C 10 21 96 REMOVAL AND REINSTALLATION Print Date 12 17 96 Copyright 1996 Glenayre Page 9 5 Figure 9 2 PA RF Module Removal and Reinsta...

Page 44: ...Power Amplifier Glenayre Document Number 9110 00160 REMOVAL AND REINSTALLATION Issue 1 Rev C 10 21 96 Page 9 6 Copyright 1996 Glenayre Print Date 12 17 96 v0228 hgl Figure 9 3 Metering Board Removal...

Page 45: ...r 9110 00160 250 Watt Gold Line Power Amplifier Issue 1 Rev C 10 21 96 REMOVAL AND REINSTALLATION Print Date 12 17 96 Copyright 1996 Glenayre Page 9 7 v0227 hgl Figure 9 3 Metering Board Removal and R...

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