Glenayre GL-T8200 User Manual

1- to 25-watt, 900-mhz

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

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Print Date: 03/23/99

GL-T8200

1- to 25-Watt, 900-MHz Power Amplifier

USER MANUAL

PN 9110.01306

REV A

Rev. A: 03/23/99

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Page 1 GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Rev. A: 03/23/99 GL-T8200 1- to 25-Watt, 900-MHz Power Amplifier USER MANUAL PN 9110.01306 REV A Specifications subject to change without notice 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,...
Page 2: Rev. A: 03/23/99
GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Glenayre Document Number: 9110.01306 Document Change Record Rev. A: 03/23/99 Document Change Record Revision: Revision A Date: 03/23/99 Changes: none, original Copyright © 1999 Glenayre Print Date: 03/23/99...
Page 3: Table Of Contents
Glenayre Document Number: 9110.01306 GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Rev. A: 03/23/99 Table of Contents Table of Contents GENERAL ........1-1 Manual Scope .
Page 4 GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Glenayre Document Number: 9110.01306 Table of Contents Rev. A: 03/23/99 PA Board ......6-2 6.3.1...
Page 5: Page: -Ii
Glenayre Document Number: 9110.01306 GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Rev. A: 03/23/99 List of Figures List of Figures Figure 3-1 PA Front Isometric View ......3-2 Figure 3-2 Top View of PA RF Compartments, Showing Internal Assemblies .
Page 6: Glenayre Document Number:
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: Specifications
Glenayre Document Number: 9110.01306 GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Rev. A: 03/23/99 List of Tables List of Tables Table 1-1 Applicable Documents ......1-1 Table 1-2 Manual Sections .
Page 9: General
Glenayre Document Number: 9110.01306 GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Rev. A: 03/23/99 GENERAL GENERAL Manual Scope This manual provides information for the 1 to 25-watt, 900-MHz power amplifier, part number 1000.02186. Applicable Documents This manual is incomplete without additional manuals. Refer to Table 1-1 for a listing and function of these manuals.
Page 10: Removal And Reinstallation
GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Glenayre Document Number: 9110.01306 GENERAL Rev. A: 03/23/99 Table 1-2 Manual Sections section contents 1. General introduction and purpose of manual 2. Specifications significant measurements of power amplifier 3. Description introduction and principal characteristics of power amplifier 4.
Page 11: Power Amplifier Specifications
Glenayre Document Number: 9110.01306 GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Rev. A: 03/23/99 SPECIFICATIONS SPECIFICATIONS Table 2-1 lists the significant equipment-level specifications for the power amplifier. Table 2-1 Power Amplifier Specifications measurement condition specification Electrical RF output power (W)
Page 13: Description
Glenayre Document Number: 9110.01306 GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Rev. A: 03/23/99 DESCRIPTION DESCRIPTION This is a 1- to 25-watt PA intended for use on the 900-MHz band. This PA is characterized by integrated monitoring devices that supply critical status information to the DSP exciter.
Page 14: Figure 3-1 Pa Front Isometric View
GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Glenayre Document Number: 9110.01306 DESCRIPTION Rev. A: 03/23/99 v0222.hgl Figure 3-1 PA Front Isometric View Page: 3-2 Copyright © 1999 Glenayre Print Date: 05/10/99...
Page 15: Functional Description
Glenayre Document Number: 9110.01306 GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Rev. A: 03/23/99 DESCRIPTION v0221.hgl Figure 3-2 Top View of PA Board, Showing I/O Functional Description The RF amplifier circuitry of the power amplifier is contained within 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.
Page 16: Isolator
GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Glenayre Document Number: 9110.01306 DESCRIPTION Rev. A: 03/23/99 3.2.3 Isolator intermodulation prevention An isolator receives the RF output of the PA chassis. It prevents intermodulation of the RF signal that may occur from nearby transmissions and reduces radiated harmonics. A sample detector circuit in the isolator reject load input monitors the reflected power (VSWR) present at the cabinet’s RF output connector.
Page 17: Required Tools And Equipment
Glenayre Document Number: 9110.01306 GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Rev. A: 03/23/99 INSTALLATION AND SETUP INSTALLATION AND SETUP Cabinet Installation and External Cabling 4.1.1 Tools and Equipment Required Refer to Table 4-1. Equipment listed by brand name may be substituted with equivalent.
Page 18: Pa I/O Connections
GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Glenayre Document Number: 9110.01306 INSTALLATION AND SETUP Rev. A: 03/23/99 4.1.5 PA I/O Connections Refer to Figure 4-1 and the appropriate rear views in the transmitter system manual. Most connections are made to the rear of the PA chassis. Table 4-2 lists PA connections.
Page 19: Setup
Glenayre Document Number: 9110.01306 GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Rev. A: 03/23/99 INSTALLATION AND SETUP Table 4-3 Exciter/PA Connector Pinout (For DSP Exciter) J6-x description direction J6-x description direction analog 1 to exciter analog 2 to exciter analog 3 to exciter analog 4/aux.
Page 20: Figure 4-1 Pa Rear View
GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Glenayre Document Number: 9110.01306 INSTALLATION AND SETUP Rev. A: 03/23/99 Figure 4-1 PA Rear View Page: 4-4 Copyright © 1999 Glenayre Print Date: 05/11/99...
Page 21: Pa Board Fuses
Glenayre Document Number: 9110.01306 GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Rev. A: 03/23/99 INSTALLATION AND SETUP 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)
Page 23: Operation
Glenayre Document Number: 9110.01306 GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Rev. A: 03/23/99 OPERATION OPERATION Controls and Indicators The PA has no indicators nor controls which are suitable for user adjustment. Operation The transmitter normally operates within the paging system in an unattended manner. Local control is not intended for operation, but for setup, checkout, or maintenance.
Page 25 Glenayre Document Number: 9110.01306 GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Rev. A: 03/23/99 THEORY OF OPERATION THEORY OF OPERATION Power Distribution The PA requires a primary 28-volt dc power input, which is typically provided by the ac power supply.
Page 26: Theory Of Operation
GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Glenayre Document Number: 9110.01306 THEORY OF OPERATION Rev. A: 03/23/99 Figure 6-1 Simplified Power Amplifier Block Diagram PA Board The DSP exciter monitors currents, voltages, powers, and other valuable status information from the power amplifier through the PA board. The two main functions of the PA board are to channel information from the PA chassis to the exciter and to distribute dc power to the exciter, R9000, receiver and C2000.
Page 27: Input Voltage
Glenayre Document Number: 9110.01306 GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Rev. A: 03/23/99 THEORY OF OPERATION 6.3.1 Input Voltage dc power input Refer to Figure 6-2. The +28-volt supply voltage from the main power supply feeds the distribution circuitry on the PA board through an Anderson power pole. The negative side of the supply is grounded to the black (-) connection.
Page 28 GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Glenayre Document Number: 9110.01306 THEORY OF OPERATION Rev. A: 03/23/99 sheet1.plt Figure 6-2 PA Board Functional Diagram Page: 6-4 Copyright © 1999 Glenayre Print Date: 05/10/99...
Page 29 Glenayre Document Number: 9110.01306 GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Rev. A: 03/23/99 THEORY OF OPERATION sheet2.plt Figure 6-2, PA Board Functional Diagram (continued) Print Date: 05/10/99 Copyright © 1999 Glenayre Page: 6-5...
Page 30: Exciter Interface
GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Glenayre Document Number: 9110.01306 THEORY OF OPERATION Rev. A: 03/23/99 Exciter Interface The physical interface is a 15-pin, filtered male connector on the exciter and the PA chassis. 15-pin connector J6 is mounted on the PA board.
Page 31: Pa Board Currents
Glenayre Document Number: 9110.01306 GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Rev. A: 03/23/99 THEORY OF OPERATION 6.5.1 PA Board Currents The currents monitored in the PA board have various upper limits, as shown in Table 6-2. They are read on the VDT screen. When one or more of these thresholds is met, it causes an interrupt to the microcontroller in the exciter, which then reduces output power until the fault condition no longer exists or until shutdown occurs.
Page 32: Volt Internal Supplies
GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Glenayre Document Number: 9110.01306 THEORY OF OPERATION Rev. A: 03/23/99 Table 6-2 Metered Parameter Thresholds upper lower threshold threshold analog reading total forward power (W) total reflected power (W) PA current Q1 none...
Page 33: Maintenance
Rev. A: 03/23/99 MAINTENANCE MAINTENANCE If the PA becomes faulty, get a replacement from Glenayre customer service. Cleaning The PA chassis should be kept clean and free of dust. Dust and dirt can reduce the cooling efficiency of the PA which can lead to module failure. Dirt on the printed circuit boards can also lead to other types of failures.
Page 35: Troubleshooting Procedures
Glenayre Document Number: 9110.01306 GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Rev. A: 03/23/99 CHECKOUT AND TROUBLESHOOTING CHECKOUT AND TROUBLESHOOTING Introduction Checkout procedures can be performed at any time to verify that the power amplifier (and transmitter) is functioning properly. After the checkout procedures are successfully completed, the site can be returned to normal service.
Page 36: Pa Board Current
If the GL-C2000 has a telephone line connected to its modem output, its alarm history can be accessed remotely through the use of the Glenayre GL-N2000 console, or with a computer which is running a communication program with VT-100 emulation and has a 2400-baud modem.
Page 37 Glenayre Document Number: 9110.01306 GL-T8200 1- to 25-Watt 900-MHz Power Amplifier Rev. A: 03/23/99 REMOVAL AND REINSTALLATION REMOVAL AND REINSTALLATION Caution When fastening dc connectors, be certain that the plug is centered directly on its corresponding jack and that the polarity is correct. Do not make dc connections while power is applied to the chassis.
Page 39: Rev A
GL-T8200 1- to 25-Watt 900-MHz Transmitter System Rev. A: 03/24/99 GL-T8200 1- to 25-Watt 900-MHz Transmitter System USER MANUAL PN 9110.01305 REV A Specifications subject to change without notice 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,...
Page 40 GL-T8200 1- to 25-Watt 900-MHz Transmitter System Glenayre Document Number: 9110.01305 Document Change Record Rev. A: 03/24/99 Document Change Record Revision: Date: 03/24/99 Changes: none; original Copyright © 1999 Glenayre Print Date: 03/24/99...
Page 41 Manual Sections ..... . . 1-1 About Glenayre ..... . . 1-2 1.4.1...
Page 42: Power Distribution
GL-T8200 1- to 25-Watt 900-MHz Transmitter System Glenayre Document Number: 9110.01305 Table of Contents Rev. A: 03/24/99 4.1.3 Primary Power Requirement ....4-1 Installation .
Page 43 Glenayre Document Number: 9110.01305 GL-T8200 1- to 25-Watt 900-MHz Transmitter System Rev. A: 03/24/99 Table of Contents REMOVAL AND REINSTALLATION..... 9-1 Power Supply .
Page 45 Glenayre Document Number: 9110.01305 GL-T8200 1- to 25-Watt 900-MHz Transmitter System Rev. A: 03/24/99 List of Figures List of Figures Figure 3-1 Transmitter Front View ......3-3 Figure 3-2 Transmitter Simplified Block Diagram .
Page 47 Glenayre Document Number: 9110.01305 GL-T8200 1- to 25-Watt 900-MHz Transmitter System Rev. A: 03/24/99 List of Tables List of Tables Table 1-1 Applicable Documents ......1-1 Table 1-2 Manual Sections .
Page 49: Applicable Documents
GENERAL Manual Scope This manual provides information for the following transmitter: • 1 to 25-watt, 900-MHz transmitter, model GL-T8200. Applicable Documents This manual is incomplete without additional manuals. Refer to Table 1-1 for a list of applicable documents, their part numbers, and a brief description of each.
Page 50: Manual Sections
GL-T8200 1- to 25-Watt 900-MHz Transmitter System Glenayre Document Number: 9110.01305 GENERAL Rev. A: 03/24/99 Table 1-2 Manual Sections section contents 1. General introduction and purpose of manual 2. Specifications significant system measurements; also see individual equip- ment manuals 3. Description introduction and principle characteristics of the equipment 4.
Page 51: Industry Canada
RA number must be shown on labels attached to the item(s). The cost of shipping to Glenayre is to be paid by the customer. Shipping from Glenayre will be prepaid by the customer, and shipped via surface mail. If express shipping is required, the unit will be shipped collect.
Page 53 Glenayre Document Number: 9110.01305 GL-T8200 1- to 25-Watt 900-MHz Transmitter System Rev. A: 03/24/99 SPECIFICATIONS SPECIFICATIONS Table 2-1 contains transmitter and power supply specifications. The ac power supply is a purchased item. Refer to the power supply manual, PN 9110.00622, for more specifica- tions.
Page 54 GL-T8200 1- to 25-Watt 900-MHz Transmitter System Glenayre Document Number: 9110.01305 SPECIFICATIONS Rev. A: 03/24/99 Table 2-1 Specifications (continued) characteristic (unit of measurement) condition, model specification other Contact Glenayre Sales for country-by-country type-approval infor- mation Electrical (power supply) ac input voltage...
Page 55 Glenayre Document Number: 9110.01305 GL-T8200 1- to 25-Watt 900-MHz Transmitter System Rev. A: 03/24/99 +DESCRIPTION +DESCRIPTION The purpose of the paging transmitter is to provide a modulated, high-level RF signal, which sets off pagers within the coverage area of its associated antenna. The paging trans- mitter receives modulation and control information from the transmitter controller, which receives information from a control site.
Page 56 GL-T8200 1- to 25-Watt 900-MHz Transmitter System Glenayre Document Number: 9110.01305 +DESCRIPTION Rev. A: 03/24/99 3.1.3 Power Amplifier (PA) The transmitter PA is mounted in the rack by screws which are inserted into the angle brackets on either side of the chassis. Access to PA fuses is gained from the front; access to the fan and I/O connections is from the rear.
Page 57 Glenayre Document Number: 9110.01305 GL-T8200 1- to 25-Watt 900-MHz Transmitter System Rev. A: 03/24/99 +DESCRIPTION Figure 3-1 Transmitter Front View Print Date: 05/10/99 Copyright © 1999 Glenayre Page: 3-3...
Page 58: Ac Power Supply
GL-T8200 1- to 25-Watt 900-MHz Transmitter System Glenayre Document Number: 9110.01305 +DESCRIPTION Rev. A: 03/24/99 3.2.3 Paging Transmitter The paging transmitter converts the digital signal from the transmitter controller into modulated and amplified RF power. Operation is in response to commands from the transmitter controller via the DSP exciter.
Page 59 Glenayre Document Number: 9110.01305 GL-T8200 1- to 25-Watt 900-MHz Transmitter System Rev. A: 03/24/99 +DESCRIPTION isolator and then to a cabinet-mounted lightning protector/connector for connection to the antenna system. Note that some installations have a ten-MHz reference signal cabled from the transmitter controller to connector J8 on the back of the DSP exciter.
Page 60 GL-T8200 1- to 25-Watt 900-MHz Transmitter System Glenayre Document Number: 9110.01305 +DESCRIPTION Rev. A: 03/24/99 3.3.3 Simplified Block-Diagram Description Refer to Figure 3-2. The interface between the transmitter and the transmitter controller is the I20 interface. Refer to the exciter manual for details.
Page 61 Glenayre Document Number: 9110.01305 GL-T8200 1- to 25-Watt 900-MHz Transmitter System Rev. A: 03/24/99 +DESCRIPTION 3.3.4 Site Control-Signal Flow Transmitter paging-site control is done two ways: • remotely (normally operation), and • locally. In either case, the paging transmitter is keyed when the transmitter controller commands it, via the DSP exciter, to key.
Page 63: Primary Power Requirement
Glenayre Document Number: 9110.01305 GL-T8200 1- to 25-Watt 900-MHz Transmitter System Rev. A: 03/24/99 INSTALLATION AND SETUP INSTALLATION AND SETUP Site Checks 4.1.1 Transmitter Environment The transmitter environment should be clean and well ventilated. Additionally, the temper- ature inside the transmitter room should be maintained within the equipment specifications.
Page 64: Installation
GL-T8200 1- to 25-Watt 900-MHz Transmitter System Glenayre Document Number: 9110.01305 INSTALLATION AND SETUP Rev. A: 03/24/99 Installation Refer to Figure 4-1, for general information. 4.2.1 Tools and Equipment Required Refer to Table 4-1. Equipment listed by brand name may be substituted with equivalent.
Page 65: Positioning Within The Rack
Glenayre Document Number: 9110.01305 GL-T8200 1- to 25-Watt 900-MHz Transmitter System Rev. A: 03/24/99 INSTALLATION AND SETUP 4.2.4 Positioning within the Rack When it is used in a normal, one-transmitter-per-cabinet rackup, the transmitter should be placed just above the power supply.
Page 66: Setup
GL-T8200 1- to 25-Watt 900-MHz Transmitter System Glenayre Document Number: 9110.01305 INSTALLATION AND SETUP Rev. A: 03/24/99 exciter-PA A multiconductor cable runs from exciter J6 to PA J6. The RF signal is via a coaxial jumper from exciter J3 to PA RF input (left side of PA).
Page 67 Glenayre Document Number: 9110.01305 GL-T8200 1- to 25-Watt 900-MHz Transmitter System Rev. A: 03/24/99 INSTALLATION AND SETUP Figure 4-1 Rear View Showing Dc and Signal Connections Print Date: 05/10/99 Copyright © 1999 Glenayre Page: 4-5...
Page 69: Operation
Glenayre Document Number: 9110.01305 GL-T8200 1- to 25-Watt 900-MHz Transmitter System Rev. A: 03/24/99 OPERATION OPERATION Controls and Indicators These assemblies within the transmitter have controls and indicators: • PA/compartment - see PA manual • exciter - see exciter manual •...
Page 71: Theory Of Operation
Glenayre Document Number: 9110.01305 GL-T8200 1- to 25-Watt 900-MHz Transmitter System Rev. A: 03/24/99 THEORY OF OPERATION THEORY OF OPERATION Cabinet Power Distribution Refer to Figure 4-2. 6.1.1 Ac Power Input Ac power is routed from the ac mains to the power supply, which produces the dc voltage for the cabinet.
Page 73: Maintenance
Glenayre Document Number: 9110.01305 GL-T8200 1- to 25-Watt 900-MHz Transmitter System Rev. A: 03/24/99 MAINTENANCE MAINTENANCE Introduction Maintenance procedures in this section are listed below. • PA-current check • dc ripple check Maintenance Procedures 7.2.1 PA Current Check Occasionally, the power amplifier device currents should be compared to the levels listed on the data sheet that accompanied the transmitter.
Page 75: Checkout And Troubleshooting
Glenayre Document Number: 9110.01305 GL-T8200 1- to 25-Watt 900-MHz Transmitter System Rev. A: 03/24/99 CHECKOUT AND TROUBLESHOOTING CHECKOUT AND TROUBLESHOOTING Checkout procedures can be performed at any time to verify that the transmitter and related paging site equipment is functioning properly. After the checkout procedures are success- fully completed, the site can be returned to normal service.
Page 76: Rf Power And Antenna
GL-T8200 1- to 25-Watt 900-MHz Transmitter System Glenayre Document Number: 9110.01305 CHECKOUT AND TROUBLESHOOTING Rev. A: 03/24/99 8.2.1 RF Power and Antenna Check the transmitter’s RF output and the antenna’s reflected power with the RF-output procedure. RF Output and Antenna Checks Using coax jumper no longer than 1 meter, attach calibrated thruline wattmeter be- tween antenna network and cabinet RF output connector.
Page 77 Glenayre Document Number: 9110.01305 GL-T8200 1- to 25-Watt 900-MHz Transmitter System Rev. A: 03/24/99 REMOVAL AND REINSTALLATION REMOVAL AND REINSTALLATION The following paragraphs discuss removing and reinstalling the various assemblies which make up the transmitter. Refer to the individual equipment manuals for information on subassemblies which may be replaced in the field.
Page 78 GL-T8200 1- to 25-Watt 900-MHz Transmitter System Glenayre Document Number: 9110.01305 REMOVAL AND REINSTALLATION Rev. A: 03/24/99 Reinstallation When replacing the exciter, be certain that all variable subassemblies in the replacement exciter are correct for system requirements. Subassemblies and settings which must be matched include those included in the list below.

Glenayre GL-T8200 User Manual

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Specifications

General

Removal and Reinstallation

Description

Installation and Setup

Power Distribution

Operation

Theory of Operation

Maintenance

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