Glenayre Electronics GL T8500 CN Users manual

250-Watt Gold Line Power Amplifier Issue 1, Rev. C: 10/21/96

Gold Line GL-T8500 250-Watt, 900-MHz Power Amplifier

USER MANUAL PN 9110.0 0160 (old part number = 916-8500-000) REV C RELEASED

any means—graphic, electronic, or mechanical, including photocopying, recording, taping, or information-ret rieva l system— without writte n perm issio n of Glenayre.

250-Watt Gold Line Power Amplifier Glenayre Do cument Number : 9110.00160 Document Change Record Issue 1, Rev. C: 10/21/96

Document Change Record

Revision: 0, Preliminary Date: 05/04/95 Changes: none, original

Issue: Rev B Date: 02/02/96 Changes: new format

Issue: Rev C Date: 10/21/96 Changes: made released

Glenayre Document Number: 9110.00160 250-Watt Gold Line Power Amplifier Issue 1, Rev. C: 10/21/96 Table of Contents

1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.1 Manual Scope . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.2 Applicable Doc u ment s . . . . . . . . . . . . . . . . . . . . . 1-1

1.3 Manual Sections . . . . . . . . . . . . . . . . . . . . . . . 1-1

2 SPECIFICAT ION S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

3 DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3- 1

3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.2 Physical Description. . . . . . . . . . . . . . . . . . . . . . 3 -1

3.2.1 Mounting Provisions . . . . . . . . . . . . . . . . . . . . . . . .3-1

3.2.2 PA Front. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

3.2.2.1 Driv e r Board . . . . . . . . . . . . . . . . . . . . . .3-1

3.2.2.2 PA Boards. . . . . . . . . . . . . . . . . . . . . . . .3-4

3.2.2.3 Combiner B oard . . . . . . . . . . . . . . . . . . . . . 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

3.3 Functional Description . . . . . . . . . . . . . . . . . . . . . 3-5

3.3.1 RF Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5

3.3.2 Isolator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 -5

3.3.3 Metering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3- 6

4 INSTALL ATI ON AND SET UP . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.1 Installation . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.2 Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.3 Ultimate Disposition . . . . . . . . . . . . . . . . . . . . . 4-1

5 OPERATIO N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.1 Controls and Indicators . . . . . . . . . . . . . . . . . . . . 5-1

5.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.2.1 Turn PA On and Off . . . . . . . . . . . . . . . . . . . . . . . .5 -1

3.2.3.3 Equipm ent Connectors . . . . . . . . . . . . . . . . . 3- 4

5.2.2 Turn Fan On and Off . . . . . . . . . . . . . . . . . . . . . . . .5-1

5.2.3 Key and Unkey PA . . . . . . . . . . . . . . . . . . . . . . . . .5-1

6 THEORY OF OPERATI ON . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 -1

6.1 Power Distribu tio n . . . . . . . . . . . . . . . . . . . . . . 6 -1

6.1.1 Primary Power . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1

250-Watt Gold Line Power Amplifier Glenayre Do cument Number : 9110.00160 Table of Contents Issue 1, Rev. C: 10/21/96

6.1.1.1 Metering Board +25V Signal Flow. . . . . . . . . . . 6-1

6.1.1.2 Power Amplifiers +25V Signal Flow . . . . . . . . . . 6-1

6.1.2 Secondary Power . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

6.1.2.1 Metering Board +13.5V Signal Flow . . . . . . . . . . 6-2

6.1.2.2 Preamplifier Module +13.5V Signal Flow . . . . . . .6-2

6.1.3 Fan 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 Di stri but i on . . . . . . . . . . . . . . . . . . . . . 6-5

6.3.1 AGC Signal Flow. . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

6.3.2 Multiplexer Control Signal Flow . . . . . . . . . . . . . . . . . . 6-6

6.4 Status Distribut ion . . . . . . . . . . . . . . . . . . . . . . 6-6

6.4.1 Mux Analog Status Signal Flow . . . . . . . . . . . . . . . . . . 6-6

6.4.2 PA Fault Signal Flow. . . . . . . . . . . . . . . . . . . . . . . . 6-6

7 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

8 CHEC KOUT AND TROUBL ES HOOTI NG . . . . . . . . . . . . . . . . . . 8-1

9 REMOVAL AND REINST AL LAT ION . . . . . . . . . . . . . . . . . . . . 9-1

9.1 PA Chassis Removal and Reinstallation . . . . . . . . . . . . . 9-1

9.2 PA RF Module Removal and Reinstallation . . . . . . . . . . . . 9-1

9.3 Metering Board Removal and Reinstallation. . . . . . . . . . . . 9-1

Glenayre Document Number: 9110.00160 250-Watt Gold Line Power Amplifier Issue 1, Rev. C: 10/21/96 List of Figures

List of Figures

Figure 3-1 250-Watt, 900-MHz Power Amplif ier

Front View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Figure 3-2 250-Watt, 900-MHz Power Amplif ier

Rear View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3- 3

Figure 3-3 PA Simplified-Block Diagram . . . . . . . . . . . . . . . . . . . . . . 3-5

Figure 5-1 Front-Panel Vie w wit h Cove r Rem o ved . . . . . . . . . . . . . . . . . 5-2

Figure 6-1 250-Watt PA Interconnection Diagram. . . . . . . . . . . . . . . . . . 6-8

Figure 6-2 250-Watt PA Functional Diagram . . . . . . . . . . . . . . . . . . . . 6-9

Figure 6-3 250-Watt PA Detailed Functional Diagram . . . . . . . . . . . . . . .6-10

Figure 6-4 Metering Board Functional Diagram . . . . . . . . . . . . . . . . . . . 6-12

Figure 9-1 PA Removal and Reinstalllation . . . . . . . . . . . . . . . . . . . . . 9-2

Figure 9-2 PA RF Module Removal and Reinstallation . . . . . . . . . . . . . . . 9-3

Figure 9-3 Metering Board Removal and Reinstallation . . . . . . . . . . . . . . . 9-5

250-Watt Gold Line Power Amplifier Glenayre Do cument Number : 9110.00160 List of Figures Issue 1, Rev. C: 10/21/96

Glenayre Document Number: 9110.00160 250-Watt Gold Line Power Amplifier Issue 1, Rev. C: 10/21/96 List of Tables

List of Tables

Table 1-1 Applicable Documents . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Table 1-2 Manual Sections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Table 2-1 Power Amplifier Specifications. . . . . . . . . . . . . . . . . . . . . . 2-1

Table 3-1 PA Circuit Boards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Table 6-1 Multiplexer Analog Status Inputs. . . . . . . . . . . . . . . . . . . . . 6-7

250-Watt Gold Line Power Amplifier Glenayre Do cument Number : 9110.00160 List of Tables Issue 1, Rev. C: 10/21/96

Glenayre Document Number: 9110.00160 250-Watt Gold Line Power Amplifier Issue 1, Rev. C: 10/21/96 GENERAL

1 GENERAL

1.1 Manual Scope

This manual provid es informa tion for the 250-watt, 9 00-MHz Gold Line powe r ampl ifier, part number 265-0082-013. Also included is information for the optional triple isolator, part number 7914.00010.

1.2 Applicable Documents

This manual is incomplete wi thout a dd iti on al Gol d Line ma nu als. R efer to Table 1-1 fo r a listing and function of these manuals.

Table 1-1 Applicable Documents

document part number function

1.3 Manual Sections

GL-T8500/8600 system manual

VDT manual 9110.00164 describes PA contro l so ftwa re

exciter manual 9110.00172 describes exci ter/ PA cont ro l

250-watt PA 9110.00160 this manual power supply manual 9110.00159 describes 50A/ 90A pow er suppl y

Table 1-2 lists the section s of thi s man u a l wit h a summary of thei r cont en t s.

9110.00163 describes fully racke d-up G old Line tr an smitt er

installed in exciter

equipment in transmitter

250-Watt Gold Line Power Amplifier Glenayre Do cument Number : 9110.00160 GENERAL Issue 1, Rev. C: 10/21/96

Table 1-2 Manual Sections

section contents

1. General introduct ion and purpose of manu al

2. Specificatio ns significa nt measu rem ent s of power am plifie r

3. Descripti on introdu ction and princi pal charac teristics of power amplifier

4. Installation and Setup initial installation and activation of power amplifier

5. Operation operation of power amplifier

6. Theory of Operati on detailed func tiona l d esc ript ion of circ u itry wi thi n power amplifier

7. Mainten ance proced ure s to be performe d on specifi c int erv al s to maintain optimum performance of power amplifier

8. Checkout and Troubleshooting verification of proper operation, correction to proper operation of power amplifier

9. Removal and Reinst alla tio n replacemen t proce dure s for power am pli fie r and selected subassemblies

Glenayre Document Number: 9110.00160 250-Watt Gold Line Power Amplifier Issue 1, Rev. C: 10/21/96 SPECIFICATIONS

2 SPECIFICATIONS

Table 2-1 lists the significant equipment-level specifications for the Gold Line power

amplifier.

Table 2-1 Power Amplifie r Specificatio n s

measurem ent 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 bandwidth 900 - 960 MHz RF input power 200 - 400 mW RF impedance 50 ohms operating voltages 25 vdc, 25 Vdc, 13.5 Vdc PA 25 Vdc current 72 mA - 33 A fan 25 Vdc current 750 m A

13.5 Vdc current 3.3 A ambient temperature -30° - +70° C humidity 0 - 95% noncondensing altitude to 10,000 ft (3050 m)

250-Watt Gold Line Power Amplifier Glenayre Do cument Number : 9110.00160 SPECIFICATIONS Issue 1, Rev. C: 10/21/96

Glenayre Document Number: 9110.00160 250-Watt Gold Line Power Amplifier Issue 1, Rev. C: 10/21/96 DESCRIPTION

3 DESCRIPTION

3.1 Introduction

Figure 3-1, 250-Watt, 900-MHz Power Amplifier Front View, and Figure 3-2, 250-Watt, 900-MHz Power Amplifier Rear View,show th e Gold Line power amplifi er (PA). This is a 250-watt PA intended for use in a GL-T8500 paging transmitter with an RF of 900 MHz nominal. Th is PA is characteri zed by int egrated mon itoring dev ices that suppl y critical status informat ion to a Gold Li ne exciter/ PA control (exciter). This exci ter contains d iagnostic softw a re that can dete ct and report a fault y PA circuit board.

3.2 Physical Description

3.2.1 Mounting Provisions

The P A is mounted to the front of most standar d 19-inch equipment racks by means of eight screws. The fron t panel of the PA may by removed wh ile the PA is mounted in the rack. T wo 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

Figure 5-1 shows the front view of the PA with the front pa nel removed. This expos es the

RF and shielded compartments, which contain the PA circuit boards. Table 3-1 lists the PA circuit boards.

Table 3-1 PA Circuit Boards

nomencla ture part number location

driver board A1 263-0082-022 RF compartment PA1 board A2 263-0082-007 RF compartment PA2 board A3 263-0082-007 RF compartment combiner board A4 263-0082-021 RF compartment metering board A5 263-0082-018 shielded compartment

3.2.2.1 Driver Board

The driver board (A1) contain s the preamp module, the intermediate PA (IPA), and the PA drivers (driver-1 and driver-2). These device s, in addition to on e resistor, are mounted directly o n th e PA heat sink. T he dr i v er board co nta i ns three co n n ec to rs: t w o o n t h e f ron t (J1 and J2) and one on the back (J3). Two RG316-type cables (not shown) are attached to the front of the board.

250-Watt Gold Line Power Amplifier Glenayre Do cument Number : 9110.00160 DESCRIPTION Issue 1, Rev. C: 10/21/96

v0222.hgl

Figure 3-1 250-Watt, 900-MHz Power Amplifier

Front View

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