Motorola Solutions 92FT4847 PDR3500 Portable Repeater User Manual 00 93C75 O BOOK

Motorola Solutions, Inc. PDR3500 Portable Repeater 00 93C75 O BOOK

Contents

Users Manual

1 PDR 3500Transportable Repeater Basic Service Manual
68P81093C75-O January 31, 2001 i Table of Contents 1 - Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1Manual Revisions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1Computer Software Copyrights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1Replacement Parts Ordering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1Parts Ordering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2Motorola Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2Parts Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2Related Documents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 2 - Safety and General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Important Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1RF Operational Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1Exposure to Radio Frequency Energy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1Electromagnetic Interference/Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 3 - Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Compact Mechanical Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1State-of-the-Art Electrical Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Transmitter Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Receiver Circuitry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Station Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Wireline Circuitry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2Switching Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2Optional Hardware Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 4 - System Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 Local Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1External Duplexer Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1Repeater RA or Cross Band Repeater Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 5 - Models and Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 Model Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1Maintenance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 6 - Approved Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 A , Motorola, ASTRO, ASTRO CAI, and SECURENET are trademarks of Motorola, Inc.© 2000, 2001 MotorolaCommercial, Government, Industrial Solutions Sector8000 W. Sunrise Blvd., Fort Lauderdale, FL 33322All Rights Reserved. Printed in U. S. A. 2/2001.
ii January 31, 2001 68P81093C75-O 7 - Setup and Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1 Programming with RSS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1Connecting PC to PDR 3500 RSS Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1Using the RSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2Hardware Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2Alignment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2Channel Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-4Electrical Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-5Power Supply Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-5RF Cabling Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-5Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-5Separate RX and TX Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-6Duplexer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-6 8 - Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1Summary of Switches, Pushbuttons, and Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1Summary of LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1 9 - Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1Troubleshooting Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1Recommended Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1Test Equipment List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1Troubleshooting Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1Troubleshooting Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-2Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-2Procedure 1: Routine Maintenance Functional Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-2Procedure 2: Troubleshooting A Reported/Suspected Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-2How to Use These Troubleshooting Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-2Interpreting LED Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-6Interpreting Alarm Alert Tones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-10Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-10Verifying Transmitter Circuitry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-11Required Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-11Verifying Transmitter Circuitry Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-11Verifying Receiver Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-15Required Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-15Verifying Receiver Circuitry Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-16Verifying Receiver Circuitry (Digital-Capable Stations) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-21Required Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-22Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-23Module Replacement Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-25General Replacement Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-25Anti-Static Precaution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-25Care of Gold-Plated Connector Contacts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-26Power Down Station Before Removing/Inserting Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-26Validating Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-26Module Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-26Station Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-27Physical Replacement of the Station Control Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-27After Installing the New Station Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-27Wireline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-28Physical Replacement of the Wireline Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-28After Installing the New Wireline Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-29ASTRO Modem Card/V.24 Interface Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-29
68P81093C75-O January 31, 2001 iii Physical Replacement of the Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-29After Installing the New Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-29Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-29Physical Replacement of the Receiver Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-29After Installing the New Receiver Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-30Exciter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-31Frequency Band Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-31Physical Replacement of the Exciter Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-31After Installing the New Exciter Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-31Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-32Frequency Band Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-32Physical Replacement of the Power Amplifier. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-32After Installing the New Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-33Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-33Physical Replacement of the Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-33Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-34Before Installing the New Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-34Physical Replacement of the Backplane. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-34After Installing the New Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-35Preselector Field Tuning Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-35Required Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-36VHF Tuning Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-36Calculating Proper Alignment Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-36Preparing Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-37VHF Tuning Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-38UHF Tuning Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-39Calculating Proper Alignment Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-39Preparing Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-40Tuning Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-41 10 - Functional Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1 Transmitter Circuitry Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1Exciter Module Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1Power Amplifier Module Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2Receiver Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2Receiver Module Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2Station Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3Station Control Module Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3Wireline Interface Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3Wireline Interface Board Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3Power Supply Module Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-4 11 - Block Diagram, Schematics, Electrical Parts List, and Circuit Board Detail. . . . . . . . . . . . . . . . . . . . . . 11-1
iv January 31, 2001 68P81093C75-O List of Tables Table 1: Model Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1Table 2: Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2Table 3: Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2Table 4: Specifications, continued . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3Table 5: Switches, Pushbuttons, and Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1Table 6: Summary of LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1Table 7: Switches, Pushbuttons, and LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2Table 8: PDR 3500 LED Indicator Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-6Table 9: Motherboard DIP Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-34 List of Figures Figure 1. EIA-232 Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1Figure 2. Switches , Pushbuttons , Connectors, and LED Indicators for PDR 3500 . . . . . . . . . . . . . . . . . . . . . . . 8-2Figure 3. PDR 3500 Troubleshooting Overview (Procedure 1: Routine Maintenance). . . . . . . . . . . . . . . . . . . . . 9-3Figure 4. PDR 3500 Troubleshooting Overview (Procedure 2: Reported or Suspected Problem) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4Figure 5. PDR 3500 LED Indicators and Front Panel Buttons and Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . 9-9Figure 6. Test Equipment Setup for Verifying Transmitter Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-12Figure 7. Test Equipment Setup for Verifying Receiver Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-17Figure 8A. Coupled receiver connection. (Top) B. Coupled duplexer connection. (Bottom) . . . . . . . . . . . . . . . . 9-19Figure 9. Disabling the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-20Figure 10. Interconnect Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-24Figure 11. Chassis Ground Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-25Figure 12. Test Equipment Setup for Preselector Field Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-38Figure 13. Location of Tuning Screws and Cavity Probe Holes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-39Figure 14. Test Equipment Setup for Preselector Field Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-41Figure 15. Location of Tuning Screws and Cavity Probe Holes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-42Figure 16. PDR 3500 Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2Figure 17. PDR 3500 Schematic Sheet 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3Figure 18. PDR 3500 Schematic Sheet 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-4Figure 19. PDR 3500 Backplane Circuit Board Detail. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-6 Parts Lists Electrical Parts List: Backplane Circuit Board......................................................................... 11-5Mechanical Parts List: PLN1681A Main Chassis .................................................................... 11-7
68P81093C75-O December 1, 2000 1-1 Foreword 1 General The information contained in this manual supplement relates to all PDR 3500s, unless otherwise specified. This manual provides sufficient information to enable service shop personnel to troubleshoot and repair a PDR 3500 to the module level. Safety Information Before operating a PDR 3500, please read the “Safety Information” section in the front of this manual. Manual Revisions Changes which occur after this manual is printed are described in “FMRs.” These FMRs provide complete information on changes, including pertinent parts list data. Computer Software Copyrights The Motorola products described in this manual may include copyrighted Motorola computer programs stored in semiconductor memories or other media. Laws in the United States and other countries preserve for Motorola certain exclusive rights for copyrighted computer programs, including the exclusive right to copy or reproduce in any form the copyrighted computer program. Accordingly, any copyrighted Motorola computer programs contained in the Motorola products described in this manual may not be copied or reproduced in any manner without the express written permission of Motorola. Furthermore, the purchase of Motorola products shall not be deemed to grant either directly or by implication, estoppel, or otherwise, any license under the copyrights, patents or patent applications of Motorola, except for the normal non-exclusive royalty free license to use that arises by operation of law in the sale of a product. Replacement Parts Ordering When ordering replacement parts or equipment information, the complete identification number should be included. This applies to all components, kits, and chassis. If the component part number is not known, the order should include the number of the chassis or kit of which it is a part, and sufficient description of the desired component to identify it.
1-2 December 1, 2000 68P81093C75-O Crystal and channel element orders should specify the crystal or channel element type number, crystal and carrier frequency, and the model number in which the part is used. Parts Ordering 7:00 A. M. to 7:00 P. M. (Central Standard Time)Monday through Friday (Chicago, U. S. A.)Domestic (U. S. A.): 1-800-422-420, or 847-538-80231-800-826-1913, or 410-712-6200 (Federal Government)TELEX: 280127FAX: 1-847-538-8198FAX: 1-410-712-4991 (Federal Government)Domestic (U. S. A.) after hours or weekends:1-800-925-4357International: 1-847-538-8023 Motorola Parts Accessories and Aftermarket Division(United States and Canada)Attention: Order Processing1313 E. Algonquin RoadSchaumburg, IL 60196Accessories and Aftermarket DivisionAttention: International Order Processing1313 E. Algonquin RoadSchaumburg, IL 60196 Parts Identification 1-847-538-0021 (Voice)1-847-538-8194 (FAX) Related Documents Quantar User’s Guide (Motorola part number 68P81095E05) RSS User’s Guide (Motorola part number 68P81085E35)
68P81093C75-O December 1, 2000 2-1 Safety and General Information 2 Important Information IMPORTANT INFORMATION ON SAFE AND EFFICIENT OPERATION. READ THIS INFORMATION BEFORE USING YOUR TRANSPORTABLE REPEATER. RF Operational Characteristics Your transportable Repeater contains a transmitter and a receiver. When it is ON, it receives and transmits radio frequency (RF) energy. Exposure to Radio Frequency Energy Your Motorola transportable Repeater is designed to comply with the following national and international standards and guidelines regarding exposure of human beings to radio frequency electromagnetic energy: • United States Federal Communications Commission, Code of Federal Regulations; 47 CFR part 2 sub-part J • American National Standards Institute (ANSI) / Institute of Electrical and Electronic Engineers (IEEE) C95. 1-1992 • Institute of Electrical and Electronic Engineers (IEEE) C95.1-1999 Edition • National Council on Radiation Protection and Measurements (NCRP) of the United States, Report 86, 1986 • International Commission on Non-Ionizing Radiation Protection (ICNIRP) 1998 • National Radiological Protection Board of the United Kingdom 1995 • Ministry of Health (Canada) Safety Code 6. Limits of Human Exposure to Radiofrequency Electromagnetic Fields in the Frequency Range from 3 kHz to 300 GHz, 1999 • Australian Communications Authority Radiocommunications (Electromagnetic Radiation - Human Exposure) Standard 1999 (applicable to wireless phones only)
2-2 December 1, 2000 68P81093C75-O Electromagnetic Interference/Compatibility NOTE: Nearly every electronic device is susceptible to electromagnetic interference (EMI) if inadequately shielded, designed or otherwise configured for electromagnetic compatibility. • FACILITIES To avoid electromagnetic interference and/or compatibility conflicts, turn off your radio in any facility where posted notices instruct you to do so. Hospitals or health care facilities may be using equipment that is sensitive to external RF energy. • FIXED SITE ANTENNAS Transportable Repeater equipment is transported to and then set up at a fixed location and operated as a fixed control station or repeater. The antenna installation must comply with the following requirements in order to assure optimal performance and make sure human exposure to radio frequency electromagnetic energy is within the guidelines set forth in the above standards: • The antenna must be mounted outside the building. • Mount the antenna on a tower if at all possible. The lowest point of the antenna must be elevated a minimum of 10 meters above the ground. This may require the use of a coaxial cable extension for the antenna. • If the antenna is to be mounted on a building, then it must be mounted on the roof. If the antenna supplied with the repeater is used and the repeater cannot be located within the 12 ft. cable length, then a coaxial cable extension should be used. • As with all fixed site antenna installations, it is the responsibility of the licensee to manage the site in accordance with applicable regulatory requirements and may require additional compliance actions such as site survey measurements, signage, and site access restrictions in order to insure that exposure limits are not exceeded.
68P81093C75-O December 1, 2000 3-1 Introduction 3 General The Motorola PDR 3500 provides conventional analog, ASTRO™ , ASTRO CAI™ , and SECURENET™ capabilities in a compact, software-controlled design. The station architecture and microprocessor-controlled Station Control Module allow for fast and reliable upgrading. FLASH memory in the Station Control Module allows software updates to be performed locally (using serial port), or remotely via modem. Compact Mechanical Design The entire unit is housed in a lockable rugged, black aluminum extruded case weighing approximately 4l lbs. Internal components are mounted in a custom, removable chassis, designed to fit a 19" rack. State-of-the-Art Electrical Design Transmitter Circuitry The station transmitter circuitry is designed for 50% duty cycle operation at full rated power. Output power is continuously monitored by an internal calibrated wattmeter. The wattmeter output feeds a power control loop, continually adjusting and maintaining the desired output power. All adjustments are electronic, including deviation and output power. Receiver Circuitry The station receive circuitry features multiple bandwidth capability (12.5, 25, or 30 kHz, depending on band), as well as ASTRO digital operation. Injection signals for the 1st and 2nd local mixers are generated by frequency synthesizer circuitry and are electronically controlled by the Station Control Module. All receive signals (analog, SECURENET , ASTRO , and ASTRO CAI ) are detected and digitized before being sent to the Station Control Module; this provides improved audio quality, consistent throughout the coverage area. Station Control Module The Station Control Module is microprocessor-based and features extensive use of ASIC and digital signal processing technology. The module serves as the main controller for the station, providing signal processing and operational control for the station modules.
3-2 December 1, 2000 68P81093C75-O Wireline Circuitry The station wireline circuitry provides a wide variety of telephone interfaces, including analog, ASTRO , ASTRO CAI , SECURENET , Tone Remote Control, and DC Remote Control. Telephone line connections are easily made to the wireline circuitry via connectors on the top panel. Switching Power Supply The station features a switching-type power supply, accepting a wide range of AC inputs (85-265 VAC, 49-61 Hz). The power supply generates 13.8 VDC for the station modules. Standard Features • Compact single case design • Extensive Self-Test Diagnostics and Alarm Reporting • FRU maintenance philosophy • Easily programmed via Radio Service Software • Local or Remote Software downloading to FLASH memory • Upgrades performed by module replacement and/or software upgrade • Compatible (with appropriate options) with analog, SECURENET , ASTRO , and ASTRO CAI digital signaling • Versatile and reliable switching-type power supply • Wide operating temperature range: -30˚ C to + 60˚C (-22˚ F to +140˚ F) Optional Hardware Features • Duplexer Option – allows a single antenna to serve for both transmitter and receiver circuitry for repeater applications. • Antenna Relay Option – allows a single antenna to be switched between transmitter and receiver.•ASTRO Modem – allows connection (for ASTRO digital signaling) to a console through a Digital Interface Unit (DIU) in an ASTRO system, also allows connection to another ASTRO Modem for digital Cross-Patch.
68P81093C75-O December 1, 2000 4-1System Applications 4Local Control The PDR 3500 is an APCO 25 digital repeater. The station is identical in operation to the Quantar station, hence there is no local control capability. There is no digital-to-audio translation within the station. Local control style operation can be accomplished in several ways:a. A portable radio may be used as an RF control station talking to the repeater.b. The station may be equipped with the wireline and the modem options and routed through a DIU to a tone remote console. The Tone remote console controls the station via wireline through the DIU. The wireline in this case is a local 4-wire cable.External Duplexer Operation The PDR 3500 must be used with an external duplexer when frequency spacing is less than 3 MHz. The duplexer isolation required for proper operation is approximately 60 dB. Double-shielded coaxial cables must be used from the repeater to the duplexer.Repeater RA or Cross Band Repeater OperationThe PDR 3500 can be configured for Repeater RA or cross band repeater operation by adding the wireline card and the Astro modem to the each repeater. The repeaters are connected together using the wireline port on each repeater. The cables are terminated in RJ-45 connectors.Repeater 1 Repeater 2Wireline A Wireline AWireline B Wireline B
4-2 December 1, 2000 68P81093C75-ONotes
68P81093C75-O January 31, 2001 5-1 Models and Specifications 5 Model Chart Table 1: Model Structure Model Description P2066B 132-154 MHzP2067B 150-174 MHzP2068B 403-433 MHzP2069B 438-470 MHzP2070B 470-494 MHzP2071B 494-512 MHz Kit Description X PLD1177_ Receiver VHF R1 X PLD1178_ Exciter VHF R2 X PLD1179_ Receiver VHF R2 X PLD1180_ Exciter VHF R2 X PLE1254 Receiver UHF R1 X PLE1255 Exciter UHF R1 X PLE1256 Receiver UHF R2 X PLE1257 Exciter UHF R2 X PLE1258 Receiver UHF R3 X PLE1259 Exciter UHF R3 X PLE1260 Receiver UHF R4 X PLE1261 Exciter UHF R4 XXXXXX PLN1682_ Board, Control XXXXXX PLN1681_ Chassis, main XXXXXX PLN7776_ Case, portable XXXXXX PLN7777_ Board, backplane XXXXXX PPN6026_ Power supply X X PLD7981_ PA, VHF X PLE9367_ PA, UHF R1 X X PLE9369_ PA, UHF R3 X PLE9372_ PA, UHF R4 X X PFD6060_ Duplexer, VHF XXXX PFE6060A Duplexer, UHF XXXXXX PAN6003A Antenna, mag mount XXXXXX PDR7778A Label XXXXXX PBN6048A Packing x = Indicates one of each is required.
5 -2 January 31, 2001 68P81093C75-O Maintenance Specifications The following are the PDR 3500 specifications for analog as measured per the revised EIA/TIA 603 Standards and for digital as measured per TIA TSB-102.CAAB: Table 2: Options OPTION DESIGNATOR DESCRIPTION PURPOSE Q245 Add: Duplexer Adds VHF or UHF duplexer. Requires customer frequency.Q463 Add: Antenna Relay Adds VHF/UHF antenna relay for base station operation.Q502 Add: Wireline Adds wireline remote control option.Q504 Add: ASTRO 9.6 Kbps Modem Adds 9.6 Kbps modem card.Q661 Add: DC Barry Cable Adds cable with alligator clip for external battery operation.H338AC Add: Transit Case Adds a transit case for increased protection during transport. Table 3: Specifications GENERAL VHF UHF Standard model numbers P2066A, P2067A P2068A, P2069A, P2070A, P2071AChannel spacing 12.5, 25, 30 kHz 12.5, 25 kHzStability 0.0001% 0.0001%Preselector bandwidth (3dB) 7 MHz 7 MHzSquelch Carrier, PL, DPL Carrier, PL, DPLNumber of modes 1 1 TRANSMITTER VHF UHF RF power (without duplexer) 30 watts 30 wattsRF power (with duplexer) 20 watts 20 wattsMaximum transmit duty cycle 50% 50%TX spurs/harmonics -60 dB -60 dBFM noise (EIA) -45 dB nominal -45 dB nominalAudio response per EIA per EIATX distortion (1 kHz, clear audio) <5% <5% RECEIVER VHF UHF Sensitivity (20dBQ) 0.35 uV 0.5 uVSensitivity (12dB SINAD) 0.25 uV 0.35 uVSelectivity (EIA SINAD) 85 dB (25/30 kHz) 85 dB (25 kHz)75 dB (12.5 kHz) 75 dB (12.5 kHz)Intermod (EIA SINAD) 80 dB (25/30 kHz)75 dB (12.5 kHz) 75 dBSpurious and image 80 dB 80 dB Note: Specifications are subject to change without notice.
68P81093C75-O January 31, 2001 5-3 Table 4: Specifications, continued DUPLEXER Repeat frequency spread, TX/TX: 300 kHzVHF minimum duplexer T-R separation 3 MHz: 132-174 MHzUHF minimum duplexer T-R separation 3 MHz: 403-520 MHzAC power voltage range: 80-265 Vac AC power frequency input: 49-61 HzExternal DC power: 11-16 Vdc CURRENT DRAIN High power repeat: 10.0 AStandby: 1.9 A DIMENSIONS Size (English): 20.00 x 15 x 7.75 inchesSize (metric): 508 X 381 X 197 mm WEIGHT Weight (English): 41 lbsWeight (metric): 18.6 kg Note: Specifications are subject to change without notice.
5-4 January 31, 2001 68P81093C75-O Notes
68P81093C75-O September 27, 2000 6-1Approved Accessories 6General The following accessories are recommended by Motorola for use with the PDR 3500.Antenna One of the following antennas should be used:•The magnetic-mount whip antenna (Motorola part number PAN6003A) shipped with the PDR 3500.NOTE: This antenna should be cut to frequency before use per the manufacturer’s instructions enclosed with the antenna.•An aftermarket antenna which meets these requirements:-Monopole-Unity gain-Tuned to the frequency at which the antenna is to be used-Minimum input power rating of 60W continuous-VSWR of 1.5:1 or less
Running H/F 6-# September 27, 2000 68P81093C75-ONotes
68P81093C75-O December 1, 2000 7-1Setup and Connections 7Programming with RSSIntroduction The PDR 3500 uses the same RSS (Radio Service Software) as the Quantar/Quantro family. Some values shown in RSS screens may not be valid due to hardware differences between the Quantar Station and the PDR 3500. A thorough explanation of the differences will be given in the following sections.Connecting PC to PDR 3500 RSS Port Once the RSS Program has been loaded onto the PC (refer to Quantar RSS User’s Guide, 68P81085E35), the PC must be electrically connected to the PDR 3500 via the RSS port located on the top panel. For this connection, a 9-pin female to 9-pin male EIA-232 cable is available (Motorola part number 30-80369E31) from the Accessories and Aftermarket Product Division (AAD, formerly known as Motorola National Parts). A cable can also be made using the wiring diagram in Figure 1.Figure 1. EIA-232 Wiring Diagram1234567899-PinD-TypeEIA-232 FemaleTXDRXDGNDRTSCTS1234567899-PinD-TypeEIA-232 MaleTXDRXDGNDRTSCTSConnectsto COM Porton PCConnectsto RSS Porton Top PanelMAEPF-27075-O
7-2 December 1, 2000 68P81093C75-OConnect one end of the cable to COM1 on the PC and the other end to the 9-pin connector labeled “RSS” on the top panel of the PDR 3500.Using the RSS For information on starting the RSS, configuring screen colors, setting up the PC serial port, and general RSS use, refer to the Quantar RSS User’s Guide (68P81085E35).Hardware Configuration From the Main Menu, press “F2-Service.” Press F2 again to arrive at the Hardware Configuration Screen. 1. The first field to verify is the Hardware Platform field. The PDR 3500 is designed using the Quantar profile; it will not operate properly in any other mode.2. The next field to verify is the System Type field. This field should be set to “Conventional.” The PDR 3500 does not operate as an ASTRO-TAC Receiver or DBS Base Station.3. Next verify that the Rx Freq Band 1 and Tx Freq Band fields list the correct ranges for receiver and transmitter.NOTE: Rx Freq Band 2 should be set to “NONE.”4. The PA Power Rating field should be set to 25W (low power), and the Power Supply field should show “AC LOW.” The PDR 3500 was designed using a Quantar low power station profile. It will not operate properly using any other configuration.5. If the unit is equipped with a Wireline Card, verify that the Wireline field under the options is set to 4-wire.Once the Hardware Configuration Screen matches the installed station hardware, press F8 to validate the configuration. A popup message will notify the user of any errors in the configuration. For a complete description of the Hardware Configuration fields, please refer to the Quantar RSS User’s Guide (68P81085E35).Alignment From the Main Menu, press “F2-Service.” Now press “F3” to arrive at the Alignment Menu. From this menu, the user may align the RF Power Out, RSSI, Station Squelch, and BER. For instructions on performing Rx or Tx Wireline Alignment, please refer to the Quantar RSS User’s Guide (68P81085E35).NOTE: Before performing any alignment procedures, first dekey the station and “Access Disable” the repeater as shown in step 1 below.
68P81093C75-O December 1, 2000 7-31. Access Disable: 1. From the main menu, press “F2-Service.” 2. Press “F6-Status Panel/Software Ver/Set Date and Time.”3. Press F2 to arrive at the Status Panel Display Screen. 4. From this screen, press F6 to activate the Access Disable function. In this mode, the station will not keyup in response to a received signal. To deactivate the Access Disable function, press shift+F6.2. RSSI Calibrate: 1. In the Alignment Menu Screen, tab over to the RSSI Calibrate field, and press F2 to perform the alignment.2. Using an R2670 or equivalent Communications System Analyzer, connect the RF out from the Analyzer to the Rx UHF-type connector on the station top panel. 3. Set the RF output level from the Analyzer to –90 dBm with no modulation, and set the frequency to PDR 3500 receive frequency. 4. With the Analyzer RF turned on, make sure the value shown in the RSS screen is –90 dBm. If it is not, type in “–90 dBm.”5. Press F8 to save the calibration.3. Power Out:1. In the Alignment Menu Screen, tab over to the Tx Power field and press F2 to perform the alignment. 2. For this procedure, connect the Tx UHF-type connector on the station top panel to the RF input of either a Motorola R-2670 Communications Analyzer, or to the input of an RF power meter. 3. Press F6 to keyup the station, check the output power level shown on the R2670 or RF power meter, and press F9 to dekey the station.4. Enter the power from the meter in the field shown in the RSS, then hit F7 for the PDR 3500 to adjust the PA power output level. 5. Once the unit adjusts the power, again keyup the station, read the RF power from the meter, dekey the station, enter the level in the RSS field, and hit F7 again to adjust. 6. Repeat this cycle until the power out is as close to 25 Watts as possible. If the power output will not adjust properly, hit F4 to initialize the PA and restart the alignment procedure.
7-4 December 1, 2000 68P81093C75-O7. Once the power out is aligned, press F8 to save the settings to the station codeplug.4. Squelch: 1. From the Alignment Menu, tab over to the Squelch Adjust field and press F2 to perform the alignment. The Squelch control bar is shown in the center of the screen. 2. To open the squelch completely, press F2. To close the squelch completely, press F4. To adjust the squelch between fully open and fully closed, use the Pg Up/Pg Dn keys on the PC. 3. Once the squelch is set, press F8 to save the setting to the station codeplug.5. ASTRO Bit Error Report:1. From the Alignment Menu, tab over to the V.52 Rx BER and RSSI Report, or PROJECT 25 Rx BER and RSSI Report.2. Connect the R2670 Communications System Analyzer RF “OUT” port to the Rx UHF-type connector on the station top panel.3. Set the generate frequency to the PDR 3500 receive frequency, and the output level to –113 dBm, with modulation either V.52 or Project 25 1011 Pattern generation.4. Press F2 to perform the alignment. The values for the report will appear on the RSS screen.Channel Information From the Main Menu, press F4. Press F4 again to arrive at the Channel Information Screen. From this screen, the user may configure the TX/RX frequencies, RF power out, modulation type, and the various channel traits for up to 16 channels.1. In this screen, first set the Rx1 and Tx frequency to the proper values. NOTE: The Rx2 frequency is set to 0.00000 MHz and cannot be edited. This is because the PDR 3500 does not allow for 2 receivers. The station will automatically calculate the Tx Idle Frequency to be the same as the Tx Frequency. In most applications, the Tx Idle Frequency should remain the same as the Tx Frequency. However, in case of portable or mobile radios unsquelching near the PDR 3500, adjust the Tx Idle frequency to Tx Frequency -6.25 kHz.2. Set the modulation type to either Analog, ASTRO, ASTRO CAI,
68P81093C75-O December 1, 2000 7-5Analog/ASTRO CAI, or CAI RX WIDE DEV.3. Move to page 2 of the Channel Information Screen by pressing the Pg Dn key. Set the Tx Power Out to the desired power level. (The Battery Backup field has no effect on station operation since there is no battery option for the PDR 3500.)For a more complete description of the Channel Information fields, please refer to the Quantar RSS User’s Guide.Electrical ConnectionsPower Supply Connections •AC Input Power Connection Each PDR 3500 is shipped with an eight foot, 3-conductor line cord. Attach the receptacle end of the cord to the AC input plug located on the station top panel. Plug the 3-prong plug into a 110 V or 220 V AC grounded outlet.NOTE: The Power Supply module automatically selects between 110 V and 220 V. •DC Input Power ConnectionAn optional six foot, fused 2-conductor DC power cord is available. Attach the alligator clip leads (Red “+”, Black “-”) to an external battery or some other DC source set to +12 V. Plug the molded connector end to the external DC connector on the top panel. NOTE: The top panel external DC connector will not charge an external battery.RF Cabling ConnectionsIntroduction The transmit and receive antenna RF connections may be made in one of two fashions depending on the system application.•Separate TX and RX antennas.The PDR 3500 top panel has two UHF-type connectors: one for RX, and one for TX. In this configuration there is a separate antenna for each connector.•Duplexer
7-6 December 1, 2000 68P81093C75-OUsing this configuration, only one antenna is required for both transmit and receive. The duplexer is mounted to the station top panel and has a single N-type connector for the antenna. An N-to-UHF adapter is provided.Separate RX and TX Connectors In order to use two antennas, first disconnect the duplexer (if equipped). Connect the Rx antenna to the UHF connector labeled “RX” on the top panel, and the Tx antenna to the UHF connector labeled “TX” (Figure 2).Duplexer The duplexer allows the PDR 3500 to use a single antenna for both transmit and receive. 1. Connect the UHF connector labeled “RX” on the station top panel, to the N-type connector labeled “RX” on the duplexer.2. Connect the top panel UHF connector, labeled “TX,” to the N-type connector labeled “TX” on the duplexer . 3. Connect the antenna UHF-type connector to the connector labeled “ANT” on the duplexer.NOTE: To assure optimal performance and that human exposure to radio frequency electromagnetic energy is within guidelines, the antenna should be mounted as described in Section 2, Safety and General Information, under Fixed Site Antennas.
68P81093C75-O December 1, 2000 8-1Operation 8Description This section describes the switches, pushbuttons, connectors, and LED indicators on the PDR 3500 used during local operation of the station and servicing.Summary of Switches, Pushbuttons, and ConnectorsThe following switches, pushbuttons, and connectors allow the station to be operated or serviced locally. See Figure 2 for the location and function of these controls and connectors.Summary of LED Indicators NOTE: Refer to the Troubleshooting section of this manual for the detailed descriptions and interpretation of the LED indicators.The following LED indicators are provided to show the operating status of the station. See Figure 2 for the location of these indicators.Table 5 Switches, Pushbuttons, and ConnectorsTop PanelWireline connectors Transmit UHF connectorRSS port connector Receive UHF connectorDC connectorAC connectorMomentary PTT/Reset switchTable 6 Summary of LED IndicatorsTop Panel Station Control ModulePower/Transmit LED Station OnStation FailIntcm/Acc DControl ChRx 1 ActiveRx2 ActiveRx FailAux LED
8-2 December 1, 2000 68P81093C75-OFigure 2 . Switches , Pushbuttons , Connectors, and LED Indicators for PDR 3500Table 7 Switches, Pushbuttons, and LED IndicatorsItem Name PurposeA EIA-232 RSS Port Connector Used to connect an IBM® PC (or compatible PC), running RSS software. Performs station alignment, optimization, and diagnostics. Requires Null Modem Cable (Motorola part number 30-80369E31).B DC Connector External DC source (+12 Vdc)C AC Connector and Fuses AC Inlet (110/220 Vac, 3 A)D Power/Transmit LED The function of this LED indicator is described in the Trou-bleshooting section of this manual.E Momentary PTT/Reset Switch When set to “PTT,” its purpose is to test the station. When set to “RESET,” its purpose is to reset the station.F Control Module Status LEDs The function of these LED indicators is described in the Troubleshooting section of this manual.The LED indicators are (from right to left): Station On; Sta-tion Fail; Intcm/Acc D; Control Ch; Rx 1 Active; Rx2 Active; Rx Fail; Aux LED.Duplexer WirelineConnections(RJ-45)Antenna TransmitUHF JackReceiveUHF JackABCDEFMAEPF-27065-O
68P81093C75-O December 1, 2000 9-1Troubleshooting 9Introduction This section provides troubleshooting recommendations and procedures for the PDR 3500 and associated ancillary equipment.Troubleshooting Overview The troubleshooting procedures and supporting diagrams allow the service technician to isolate station faults to the module/assembly level, or to a limited portion of the motherboard circuitry. The following information is included:•Alarm indicators and their functions•Troubleshooting flow charts•Module replacement procedures•Post-repair procedures: Performing alignment after replacing defective modulesRecommended Test Equipment Follow this list of recommended test equipment when performing troubleshooting procedures on the PDR 3500 and ancillary equipment:Test Equipment List •Motorola R2001 or R2600 Series Communications Analyzer (or equivalent)•PC with RSS program•In-Line Wattmeter (Motorola S-1350, or equivalent)•Dummy Load (50Ω, station wattage or higher)•Handset/Microphone with PTT switch (TMN6164, or equivalent)Troubleshooting Procedures The troubleshooting and repair philosophy employs Field Replaceable Unit (FRU) substitution. The PDR 3500 is comprised of self-contained modules (FRUs). Replacing faulty modules should bring the station back to normal operation.
9-2 December 1, 2000 68P81093C75-OMany of the troubleshooting procedures require the use of the Motorola-supplied Radio Service Software (RSS) since the PDR 3500 is computer-controlled, employing state-of-the-art signal processing. The RSS operates on a PC (or compatible), with RS-232 communication port capability. The RSS allows the technician to access alarm logs, run diagnostics, and set up the equipment for various audio and RF tests. Complete details on the operation of the RSS are provided in the RSS User’s Guide (manual number 68P81085E35).Troubleshooting OverviewIntroduction Two procedures are provided for troubleshooting the PDR 3500 and ancillary equipment. Each procedure is designed to quickly identify faulty modules, and replace them with known working modules.Procedure 1: Routine Maintenance Functional CheckoutProcedure 1 is a series of non-intrusive tests, performed during a routine maintenance. The technician verifies proper station operation. An overview of the procedure is shown in the flowchart (Figure 3).Procedure 2: Troubleshooting A Reported/Suspected ProblemProcedure 2 should be used when an equipment problem has been either reported or is suspected. The procedure includes tests that allow the technician to troubleshoot reported or suspected equipment malfunctions. An overview of the procedure is shown in the flow chart (Figure 4).How to Use These Troubleshooting ProceduresPerform the following basic steps in order to efficiently troubleshoot the PDR 3500 equipment.Step 1. Select the appropriate troubleshooting procedure flow chart (Procedure 1 or Procedure 2).Step 2. Perform the selected flow chart tasks. Tasks requiring additional explanation are marked with page references.•Locate the additional information•Perform the tasks (if any)•Return to the flow chartStep 3. Once the faulty module has been identified, proceed to Module Replacement Procedures, beginning on page 25.
68P81093C75-O November 30, 2000 9-3Figure 3 PDR 3500 Troubleshooting Overview (Procedure 1: Routine Maintenance)ROUTINE MAINTENCE VISITOBSERVE LED INDICATORS andMONITOR ALARM TONES (PAGES 6 AND 9) • OBSERVE LED INDICATORS ON STATION MODULE FRONT PANELS• MONITOR ALARM ALERT TONES FROM EXTERNAL SPEAKEROF BEINGFAULTY?MODULE SUSPECTED GO TO TROUBLESHOOTINGPROCEDURE 2 FLOW CHARTYESINTERPRET STATUS REPORT(RSS USER’S GUIDE–68P81085E35)• USING RSS, ACCESS THE STATUS REPORTSCREEN AND LOOK AT HISTORY OF ALARMSAND TIME STAMPSNOGO TO TROUBLESHOOTINGPROCEDURE 2 FLOW CHARTYESNORUN STATION DIAGNOSTICS(RSS USER’S GUIDE–68P81085E35)• USING RSS, RUN DIAGNOSTICS ONSTATION MODULESGO TO TROUBLESHOOTINGPROCEDURE 2 FLOW CHARTYESNODONEPROCEDURE 1OF BEINGFAULTY?MODULE SUSPECTEDOF BEINGFAULTY?MODULE SUSPECTED
9-4 December 1, 2000 68P81093C75-OFigure 4 PDR 3500 Troubleshooting Overview (Procedure 2: Reported or Suspected Problem) PROBLEM REPORTED OR SUSPECTEDOBSERVE LED INDICATORS andMONITOR ALARM TONES (PAGES 6 AND 9) • OBSERVE LED INDICATORS ON STATION MODULE FRONT PANELS• MONITOR ALARM ALERT TONES FROM EXTERNAL SPEAKERIN SOFTWARE DOWNLOAD MODE?LED PATTERNINDICATES STATION YESNOYESNORUN STATION DIAGNOSTICS(RSS USER’S GUIDE–68P81085E35)• USING RSS, ACCESS DIAGNOSTICS SCREEN,RUN DIAGNOSTICS, AND INTERPRET RESULTSYESNOPROCEDURE 2USING RSS, ACCESS THE STATUS REPORT SCREEN. ANALYZE MESSAGES TO DETERMINE IF MODULE FAILURE HAS OCCURRED.USING RSS, DOWNLOAD STATIONSOFTWARE TO FLASH MEMORYON STATION CONTROL BOARDNOYESOF BEINGFAULTY?MODULE SUSPECTEDOF BEINGFAULTY?MODULE SUSPECTEDOF BEINGFAULTY?MODULE SUSPECTEDAGO TOGO TO MODULE REPLACEMENT PROCEDURES ON page 25GO TO MODULE REPLACEMENT PROCEDURES ON page 25
68P81093C75-O November 30, 2000 9-5Figure 4 PDR 3500 Troubleshooting Overview (Procedure 2: Reported or Suspected Problem) (Continued)CHECK CODE PLUG PROGRAMMING (RSS USER’S GUIDE – 68P81085E35)• USING RSS, READ THE STATION CODE PLUGAND VERIFY THAT PROGRAMMING ISYESNORUN TRANSMITTER AND RECEIVER TESTS:• PERFORM VERIFYING TRANSMITTER CIRCUITRY TESTS (Page 10) TO ISOLATE PROBLEM TO PROCEDURE 2NOYESOF BEINGFAULTY?MODULE SUSPECTED(CONTINUED)ACORRECT (COMPARE TO CODE PLUG FILE ON PC FOR PARTICULAR STATION)CODEPLUGPROGRAMMINGCORRECT?• RE-PROGRAM STATION CODE PLUG BY DOWNLOADINGCUSTOMER DATA FROM CODE PLUG FILE FOR PARTICULAR STATION (RSS GUIDE – 68P81085E35)• IF PROBLEM STILL EXISTS, PROCEED TO INTERPRETSTATUS REPORTINTERPRET STATUS REPORT(RSS USER’S GUIDE–68P81085E35)• USING RSS, ACCESS THE STATUS REPORTSCREEN AND LOOK AT HISTORY OF ALARMSAND TIME STAMPSTRANSMITER CIRCUITRY• PERFORM VERIFYING RECEIVER CIRCUITRY TESTS(Page 14) TO ISOLATE PROBLEM TO RECEIVERCIRCUITRYGO TO MODULE REPLACEMENT PROCEDURES ON page 25REPLACE FAULTY MODULE AS DESCRIBED IN MODULE RELACEMENT PROCEDURES BEGINNING ON page 25
9-6 December 1, 2000 68P81093C75-OInterpreting LED Indicators Several LED indicators are provided on the front panels and on the top panel of the chassis. These LEDs give a quick status indication of the station equipment. The Station Control Module LEDs are visible from the station’s top panel. Observing the other LEDs requires the removal of the station’s chassis from the case. See Figure 5 for the location of all LED indicators on the station’s equipment. A listing of each LED indicator, along with a description of the status indicated by each LED, is shown in Table 8.Table 8: PDR 3500 LED Indicator Functions LED Location LED Name Status DefinitionEXCITER MODULETx Lock – GREEN when Exciter synthesizer is locked; module fully functional.– OFF when:synthesizer is out of lock or+5V, +14.2V, or both are absentPA Full – GREEN when transmitter is keyed and PA output power is at expectedpower level (as set by technician via RSS during station alignment)– OFF when:PA not keyedorPA keyed, but PA output power is not at expected power level(as set by technician via RSS during station alignment)PA Low – YELLOW when transmitter is keyed and PA output power is less than expected power level (as set by technician via RSS during station alignment) but not shut down (for example, during power cutback mode)– OFF when:PA not keyedorPA keyed, and PA output power is at expected power level(as set by technician via RSS during station alignment)PA Fail – RED when:No PA output power (for example, during PA shutdown mode);LED status is latched, thereby indicating status during current key orfor previous keyNOTE: Any component associated with the PA could cause LED to light. These include the Exciter, PA, and transmitter circuitry on the backplane.– FLASHING when PA is in the Test Mode (activated by technician viaRSS; when in Test Mode, power cutback, and openpower loop protection are disabled)– OFF when PA output power is either at expected level, or at specificcutback levels (any level other than shutdown); LED status is latched,thereby indicating status during current key, or for previous key.TOP PANEL Pwr/Tx – GREEN when AC or DC input power is present– RED when station is transmitting– OFF when AC or DC input power is absent
68P81093C75-O November 30, 2000 9-7STATION CONTROL MODULE (SCM)STATION ON – GREEN when SCM fully functional– FLASHING when front panel switch press detected– OFF for SCM failureStation Fail – RED for SCM failure– OFF when SCM fully functional (no failure)Intcm/Acc D –YELLOW when station is in Intercom mode– FLASHING when station is in Access Disable mode– OFF when station is not in Intercom modeControl Ch – GREEN when station is control channel (trunking systems only)– FLASHES each time station decodes IWS (IntelliRepeater systems only)Rx 1 Active – GREEN when Station Control Board is passing audio/data (receive path unmuted)from Receiver #1; The following conditions must be met:Carrier at proper frequency being receivedCarrier signal level is above threshold set in codeplug Squelch criteria met (carrier, PL, DPL,ASTRO, secure, etc.)(Note that squelch criteria can be manually altered via RSS for testing purposes)– OFF when above conditions are not met for Receiver #1Rx 2 Active – Unused in PDR 3500Rx Fail – RED when receiver is non-functional*– BLINKING ONCE PER SECOND when Receiver #1 is non-functional*– BLINKING TWICE PER SECOND when Receiver #2 is non-functional* or whenSAM module, or UHSO Module, is non-functional (unused in PDR 3500)– OFF when RECEIVER is functional* (or no receiver module installed)*A receive module is considered non-functional if a failure is detected during diagnostics run at time of power-up, or during normal operationAux LED – GREEN LED available for special application functionAll LEDs Flashing On and Off in Unison– Station is in Software download mode, either initiated by the RSS, or due tosoftware failure.LEDs Flashing Up and Down in Sequential Pattern– Station received software files from RSS and is in process of downloading the software to FLASH memory in the Station Control ModuleWIRELINE INTERFACE BOARD(WIB)WL On – GREEN when WIB fully functional– OFF for WIB failureBoth LEDs Blinking Rapidly– WIB is in Software Download mode (operating software is being downloaded into the FLASH memory on WIB from Station Control Module)Notes:1. All LEDs momentarily light following station reset (Volume Up, Volume Down, and Intercom buttons on SCM front panel pressed simultaneously), or on station power-up.2. If no LED indicators are on, make sure that AC or DC power to the station power supply is present. If using AC power, check top panel fuses. Check the circuit breaker at the source. Check the AC or DC line cord. If no problem is found and AC power is used, suspect the power supply.Table 8: PDR 3500 LED Indicator Functions (Continued)LED Location LED Name Status Definition
9-8 December 1, 2000 68P81093C75-O
68P81093C75-O November 30, 2000 9-9Figure 5 PDR 3500 LED Indicators and Front Panel Buttons and ConnectorsTx LockPA FullPA LowPA FailWL OnWL FailStation OnStation FailIntrem/AccDControl ChRx 1 ActiveRx 2 ActiveRx FailAux LEDSpeakerRSS PortIntercom/ShiftCSQ/PL/OffVol Up/Local PTTVol Down/Access DisableEXCITER MODULE(Front Panel)WIRELINE INTERFACEMODULE(Front Panel)STATION CONTROL MODULE(Front Panel - Cover Plate Removed)PWR/TxPTT/ResetSwitchTOP PANELOF STATIONMAEPF-27030-OHandset
9-10 December 1, 2000 68P81093C75-OInterpreting Alarm Alert TonesIntroduction Four station alarm conditions are reported with audio alert tones which are routed to the external speaker connector (RJ-11) on the front of the control module. (Pin 4 on the RJ-11 is Speaker High; Pin 1 is Speaker Ground.) The alarms are also entered into the alarm log which can be accessed using the RSS. Refer to the RSS User’s Guide, part number 68P81085E35.NOTE: The alarm tones may also be routed to the console (via the wireline) and transmitted over the air. Refer to the RSS User’s Guide (part number 68P81085E35) for details on enabling or disabling these two alarm routing options.The four alarm conditions are represented by a series of alarm tones, from a single beep, to four beeps. Each beep is a 1200 Hz tone, lasting 125 msec. The alarm tones occur during a repeating 10 second window, with two seconds between successive alarms (when more than one alarm is active). The following two examples illustrate the timing of the alarm tones.The alarm tone definitions are as follows:Example 1: Single Alarm (#3)beep...beep....beep.................................................................................................[repeats]Alarm #310 Second WindowExample 2: Multiple Alarms (#1 and #4)beep...........................beep....beep ... beep....beep................................................[repeats]2 secondsAlarm #1 Alarm #410 Second WindowNumber of Beeps Alarm Condition Name Alarm Condition Description1 Battery Revert Alarm is reported when station loses AC/DC line power and reverts to battery backup. Alarm is cleared when station receives AC/DC power. Should not occur in PDR 3500.2 PA Fail Alarm is reported when PA fails to keyup to full ouput power. Alarm is cleared upon successful keyup to full power.3 Synthesizer Alarm is reported when either Tx or Rx synthesizers fail to lock. Alarm is cleared when both sythesizers lock.4 Overvoltage Alarm is reported when battery charging voltage is above +34.5 V (100 W stations), or +17.25 V (20 W stations). Alarm is cleared when voltage returns to normal range.
68P81093C75-O November 30, 2000 9-11Verifying Transmitter Circuitry IntroductionWhile most module faults can be detected by running the station diagnostics provided by the RSS, the following procedure provides a more traditional method of troubleshooting the transmitter circuitry. This procedure is useful in the event that the RSS is not at hand or for some reason cannot be utilized (PC malfunction, etc.)This procedure allows the service technician to make minor adjustments and verify the proper operation of the station transmit circuitry, including:•Exciter Module•Power Amplifier Module•Power Supply Module•2.1 MHz Reference Oscillator Circuitry•Transmitter-related circuitry on the Station Control Module (SCM)In general, the transmitter circuitry is exercised by injecting and measuring signals using a Motorola R2001 Communications Analyzer (or equivalent). Measured values outside the acceptable range indicate a faulty module; values within range verify proper operation of the above listed modules and circuitry.Required Test Equipment The following test equipment is required to perform the procedure:•Motorola R2001 Communications Analyzer (or equivalent)•Telephone-style handset with PTT switch (TMN6164, or equivalent)•In-line Wattmeter (Motorola Model S-1350, or equivalent)•Dummy Load (50Ω, station wattage or higher)Verifying Transmitter Circuitry Procedure Step 1. Connect test equipment by performing Step 1 through 3 shown in Figure 6.Step 2. Connect handset to RJ-11 connector on SCM front panel, as shown. The cover plate over the SCM side of the chassis must be removed to access this connector.MEPF-27031-OHandsetPTTButton
9-12 December 1, 2000 68P81093C75-OFigure 6 Test Equipment Setup for Verifying Transmitter CircuitryRF SECTIONMONITOROSCILLOSCOPECOMMUNICATIONSSYSTEM ANALYZER1023456789Disconnect cable from antenna port ofduplexer or antenna relaly. If duplexeror relay not used, disconnect cablefrom top panel transmit output port.Duplexer orAntenna RelayAntenna PortToAntennaIn-lineWattmeterAntennaRF Port Select Knob(Pull Out)MotorolaR2001 CommunicationsAnalyzerDummyLoadIf duplexer or antenna relay is used,connect N-to-N cable from antennaport to in-line wattmeter, otherwiseconnect UHF-to-N cable from toppanel transmit jack to in-line wattmeter.Connect wattmeter to dummy load.Connect antenna to R2001 antenna input.Be sure to pull RF Port Select Knobout to select antenna rf input.321MAEPF-27032-O
68P81093C75-O November 30, 2000 9-13Step 3. Press the PTT button and observe the LED indicators on the Exciter Module front panel.•If PA Low or PA Fail LED is lit, suspect the following:-Power Amplifier Module failure-Exciter Module failure-Loose or bad Exciter-to-PA RF cable-DIP switches on backplane are set for incorrect station frequency band. DIP switches should be set as described in the backplane portion of the Module Replacement section.-Faulty forward voltage, control voltage, or temperature voltage translation circuitry on backplane.•If TX Lock LED is off, suspect the following:-Faulty Station Control Module-Faulty Exciter Module-Faulty backplaneStep 4. Measure output power by pressing the PTT button and observing the reading on the in-line wattmeter.•If the PA output is not at the proper power (as set for the particular station), adjust the output power as described in the Setup and Connections section of this manual.•If the station will not output the rated power, and the output is being measured through a duplexer or antenna relay, the duplexer could be set for the incorrect frequency, or it could be malfunctioning, or the antenna relay could be faulty. Connect the wattmeter directly to the transmit port (UHF connector) on the station top panel, bypassing the duplexer or antenna relay. If the station generates rated power directly from the PA, suspect the following:-Faulty duplexer or transmit frequency mismatch-Loose or faulty PA-to-duplexer/antenna relay cable-Improperly connected or faulty antenna relay
9-14 December 1, 2000 68P81093C75-OIf the station still does not generate rated power, suspect the following:-Power Amplifier Module failure-Exciter Module failure-Loose or faulty Exciter-to-PA RF cable-Faulty forward voltage or control voltage translation circuitry on backplaneStep 5. If the PA power out is okay, setup R2001 for spectrum analyzer display. Press the PTT button and observe the display. The display should look similar to:•If the display shows multiple carriers, evenly spaced about the station transmit frequency, suspect a faulty PA module.•If the display shows a solid carrier, but off frequency, suspect the following:-Faulty Exciter or Station Control Module•If the display shows a single carrier moving erratically, suspect the following:-Faulty Station Control Module-Faulty Exciter Module-Faulty PA ModuleStep 6. If the display is okay, setup R2001 to display modulation. Using the handset, push the PTT button and speak into the mouthpiece. Verify that the display shows:•If the proper display is not obtained, suspect faulty SCM or Exciter ModuleStep 7. Set the R2001 for GEN/MON MTR. Press the PTT button and speak loudly into the mouthpiece to cause maximum deviation. Display should read ±5 kHz maximum.•If the proper display is not obtained, suspect faulty SCM or Exciter ModuleStep 8. This completes the Verifying Transmitter Circuitry test procedure. If all displays and measurements are correct, the transmitter circuitry may be considered to be operating properly.
68P81093C75-O November 30, 2000 9-15•Remove test equipment. •Restore the station to normal service. •Return to the trouble shooting flow chart to resume the troubleshooting sequence.Verifying Receiver Circuitry IntroductionWhile most module faults can be detected by running the station diagnostics provided by the RSS, the following procedure provides a more traditional method of troubleshooting the receiver circuitry. This procedure is useful in the event that the RSS is not at hand, or, for some reason, cannot be utilized (PC malfunction, etc.)This procedure allows the service technician to make minor adjustments and verify the proper operation of the station receive circuitry, including:•Receiver Module•Power Supply Module•2.1 MHz Reference Oscillator Circuitry•Receiver-related circuitry in the Station Control Module (SCM)In general, the receiver circuitry is exercised by injecting and measuring signals using a Motorola R2001 Communications Analyzer (or equivalent). Measured values outside the acceptable range indicate a faulty module; values within range verify proper operation of the above listed modules and circuitry.Required Test Equipment The following test equipment is required to perform the procedure:•Motorola R2001 Communications Analyzer (or equivalent)•Telephone-style handset with PTT switch (TMN6164, or equivalent)•RJ-11 to BNC cable•Dummy Load (50Ω, station wattage, or higher)IMPORTANT! If the station operates as a repeater, the transmit output from the station must be connected to a dummy load to prevent over-the-air broadcast during receiver testing.
9-16 December 1, 2000 68P81093C75-OVerifying Receiver Circuitry Procedure Step 1. Connect test equipment by performing Step 1 through 3 shown in Figure 7.NOTE: The cover plate over the SCM side of the chassis must be removed to perform these tests.Step 2. Disable PL and carrier squelch by repeatedly pressing the PL/CSQ/Off button until receiver noise is heard through the handset (or external speaker). Refer to Figure 5 for the location of the PL/CSQ/Off button. If no audio is heard, suspect the following:•Faulty Receiver Module •Faulty Station Control Module•R2001 is outputting a carrier signalStep 3. Set R2001 to generate a 0.5 µV (-13 dBm) FM signal at the PDR 3500 receiver frequency, modulated by a 1 kHz tone at 3 kHz deviation. The 1 kHz tone should be audible through the handset (or external speaker). If no audio is heard, suspect the following:•Faulty Station Control Module (2.1 MHz reference)•Faulty Receiver Module•Faulty antenna-to-Receiver preselector RF cable•Faulty R2001-to-station RF cable•Duplexer/station receive frequency mismatch, or faulty duplexer
68P81093C75-O November 30, 2000 9-17Step 4. If audio is heard, connect the HANDSET RJ-11 jack to the Oscilloscope input BNC connector, as shown below.Figure 7 Test Equipment Setup for Verifying Receiver CircuitryRF SECTIONMONITOROSCILLOSCOPECOMMUNICATIONSSYSTEM ANALYZER1023456789Disconnect cables from toppanel transmit andreceive ports.ToAntennaRF In/OutMotorolaR2001 CommunicationsAnalyzerDummyLoadPDR 3500Top PanelConnect UHF-to-N cable from station top panelreceive port to R2001 RF in/out. Connect UHF-to-Ncable from top panel transmit port to dummy load.Connect handset to RJ-11 jack onfront panel of Station Control Module(or External Speaker to RJ-11 jack).321MAEPF-27033-OHandsetPTTButtonRF SECTIONMONITOROSCILLOSCOPECOMMUNICATIONSSYSTEM ANALYZER1023456789OscilloscopeInputMAEPF-27034-OToStationReceiveConnectorStation ControlModuleFront PanelRJ-11 to BNC Test CableMotorola Part No. 01-82069W01(Available from Motorola WASPD)VolumeUp Button
9-18 December 1, 2000 68P81093C75-OStep 5. Use the Volume Up button to increase the volume to maximum. Measure the audio level using the R2001.•Audio level should measure approximately 0.75 to 1.5 V p-p. If not, suspect faulty SCM.Step 6. Change R2001 injection signal to•VHF: 0.25 µV (-119 dBm)•UHF: 0.35 µV (-116 dBm).Step 7. Measure the receiver 12 dB SINAD sensitivity. The value should read 12 dB, or greater. If not, tune the preselector (VHF and UHF only) and re-check 12 dB SINAD. If 12 dB SINAD cannot be achieved, suspect the following:•Damaged cable from top panel receive port to preselector•Faulty receiver•Excessive loss in the R2001-to-station RF cableNOTE: To measure 12 dB SINAD, the station must be programmed for mixed mode Analog/Digital operation. Incorrect reading will result if programmed for Digital Only operation.NOTE: For VHF and UHF stations only, refer to 5. Preselector Field Tuning Procedure in this section. Procedures for tuning the receiver preselector are described.Step 8. If the station is configured with a duplexer, continue with Step 9 to test the duplexer’s performance. If the station is not configured with a duplexer, go to Step 16.Step 9. Steps 9 through 13 describe a method of measuring the effect of insertion loss from the duplexer on receiver sensitivity. Connect the dummy load to the station’s top panel receive port through a capacitive coupler (isolated T). Connect the R2001 to the isolated side of the coupler. (See Figure 8.)
68P81093C75-O November 30, 2000 9-19Step 10. Disable the transmitter by holding the Shift button and then pressing the Access Disable button on the Station Control Module, as shown in Figure 9. When the transmitter is disabled, the yellow Access disable light on the SCM will flash. This step is very important. With the transmitter disabled, the PA Full LED on the Exciter Module should not light, even when the station is receiving.Figure 8 A. Coupled receiver connection. (Top) B. Coupled duplexer connection. (Bottom)RXTXRF SECTIONMONITOROSCILLOSCOPECOMMUNICATIONSSYSTEM ANALYZER1023456789DuplexerPDR 3500Top PanelCapacitiveCoupler(Isolated T)RF OutputMotorolaR2001 CommunicationsAnalyzerDummyLoadMAEPF-27035-ORXTXRF SECTIONMONITOROSCILLOSCOPECOMMUNICATIONSSYSTEM ANALYZER1023456789DuplexerPDR 3500Top PanelCapacitiveCoupler(Isolated T)RF OutputMotorolaR2001 CommunicationsAnalyzerDummyLoadMAEPF-27036-O
9-20 December 1, 2000 68P81093C75-OStep 11. Measure the 12dB SINAD sensitivity and make a note of the level. This level will serve as a baseline for the receiver sensitivity. If 12 dB SINAD cannot be achieved, suspect the following:•Test configuration used does not match that shown in Figure 8B.•Excessive loss in the coaxial cables or coupler.Step 12. Remove the cable connecting the coupler to the top panel receive port. Connect the coupler to the duplexer’s antenna port. Connect the duplexer’s receive port to the station’s top panel receive port, as in normal station operation. (See Figure 8B.)Step 13. Measure the 12 dB SINAD once again, and note the result. The difference between this 12 dB SINAD level and the level measured in Step 11 reflects the insertion loss of the duplexer. The difference should be no greater than approximately•VHF: 1.3 dB•UHF: 1.6 dBIf the difference is greater, suspect the following:•Duplexer receive and transmit ports are reversed•Loose or damaged cables between the duplexer and the station•Station receive frequency does not match the duplexer receive frequency. Use a different frequency or replace the duplexer. (Field tuning of duplexers is not recommended.)Figure 9 Disabling the TransmitterPress and holdShift Button.Station ControlModuleExciterModuleMAEPF-27037-O1Press Vol Down/Access Disable2Intcm/Acc D LEDshould Flash yellow.3PA Full LED shouldNOT illuminate.4
68P81093C75-O November 30, 2000 9-21Step 14. Steps 14 and 15 will test the effect of duplexer quieting on receive sensitivity. Re-enable the transmitter by holding down the Shift button again and pressing the Access Disable button on the SCM. The following lights should indicate that the station is now operating as a repeater:•Yellow Access Disable light stops flashing•PA Full LED on the Exciter Module lights when the station is receiving.Step 15. Test the 12 dB SINAD sensitivity. Depending on the duplexer frequency spacing, this level should be no more than 1 to 2 dB greater than the Step 13 reading (with the transmitter disabled). If the reading is greater than 1 to 2 dB, the station transmit frequency does not match the duplexer receive frequency. Use a different frequency or replace the duplexer. (Field tuning of duplexers is not recommended.)Step 16. If the station is not digital-capable, the Verifying Receiver Circuitry test procedure is complete. The receiver circuitry is considered to be operating properly if all displays and measurements are correct.1. Remove the test equipment.2. Restore the station to normal service.3. Return to the troubleshooting flow chart to resume the troubleshooting sequence.If the station is digital-capable, continue with the Digital Only portion of the Verifying Receiver Circuitry test procedure.Verifying Receiver Circuitry (Digital-Capable Stations)IntroductionWhile most module faults can be detected by running the station diagnostics provided by the RSS, the following procedure provides a more traditional method of troubleshooting the receiver circuitry. This procedure allows the service technician to make minor adjustments and verify the proper operation of the station receive circuitry, including:•Receiver Module•Power Supply Module•2.1 MHz Reference Oscillator Circuitry•Receiver-related circuitry in the Station Control Module (SCM)
9-22 December 1, 2000 68P81093C75-OThe transmitter circuitry is exercised by injecting and measuring signals using a Motorola R2670 Communications Analyzer (or equivalent), and analyzing the Bit Error Rate using the RSS. Measured values outside the acceptable range indicate a faulty module; values within range verify proper operation of the above modules and circuitry.Required Test Equipment The following test equipment is required to perform the procedure:•Motorola R2670 Communications Analyzer with ASTRO CAI Option (or equivalent)•PC running Radio Service Software (RSS) program•Female N-type to Female N-type coaxial cable•Dummy Load (50Ω, station wattage, or higher). Required for repeater stations only.IMPORTANT! If the station operates as a repeater, the transmit output from the station must be connected to a dummy load to prevent over-the-air broadcast during receiver testing.Step 1. Proceed to ASTRO Bit Error Rate Report (located in Chapter 4 of the RSS User’s Guide, part number 68P81085E35). Follow the instructions for setting up the test equipment and initiating a BER report using the RSS. Step 2. If the BER reading is above 5%, suspect the following:•Faulty Station Control Module (2.1 MHz reference)•Faulty Receiver Module•Faulty antenna-to-receiver preselector RF cable•Faulty top panel-to-preselector RF cable•Faulty R2670-to-station RF cableStep 3. If you are injecting RF directly into the top panel receiver port, change the R2670 injection signal level to:•VHF: 0.25 µV (-119 dBm)•UHF: 0.35 µV (-116 dBm)If you are injecting RF through a duplexer, change the R2670 injection signal level to:
68P81093C75-O November 30, 2000 9-23•VHF: 0.29 µV (-117.7 dBm)•UHF: 0.43 µV (-114.4 dBm)NOTE: For VHF and UHF stations only, refer to 5. Preselector Field Tuning Procedure in this section, for procedures to tune the receiver preselector.Step 4. Note the receiver BER reading. The BER reading should be 5% or less. If not, and if a duplexer is being used, repeat the BER test, bypassing the duplexer. If the BER is 5% or less after bypassing the duplexer, the station frequencies do not match the duplexer frequencies, or the duplexer-to-top panel cables are faulty. If the BER, as tested straight into the top panel, is greater than 5%, tune the preselector and re-check the BER reading. If a reading of 5%, or less, cannot be achieved, replace the Receiver Module.Step 5. This completes the Verifying Receiver Circuitry test procedure. If all displays and measurements are correct, the receiver circuitry may be considered to be operating properly. 1. Remove test equipment. 2. Restore the station to normal service. 3. Return to the trouble shooting flow chart to resume the troubleshooting sequence.Wiring Diagram Please refer to Figure 10 for a conceptual line drawing of the motherboard, modules, and other components set flat outside of the chassis and properly interconnected.Please refer to Figure 11 on page 25 for a detailed diagram of the connections from the AC inlet connector to the power supply and chassis ground.
9-24 December 1, 2000 68P81093C75-O Figure 10 Interconnect DiagramReference From To DescriptionA Top panel UHF Receiver mini-UHF Receive RF coaxial cableB Top panel AC connector Power supply terminals H, N, GND 120/240 VAC to power supplyCPower supply terminals POS, NEG Backplane terminals WHT, BLK 14 VDC from power supplyD Top panel DC connector Backplane terminals BLU, BLK 14 VDC input to stationE Top panel DB-9 connector Backplane connector J20 RSS interface ribbon cable assemblyF Top panel LED/Switch Backplane Molex P5/P9 LED/Switch assemblyG Chassis cooling fans Backplane 3-pin Molex P5 Cooling fan assemblyH Backplane terminals RED, BLK PA 14 VDC input 14 VDC to PAI Backplane connector P10 PA Control/feedback ribbon cableJ PA mini-UHF Top panel UHF Transmit RF coaxial cableK Exciter mini-UHF PA RF drive coaxial cableAC JackPowerSupplyMotherboardDCRxTxRSSP5P9JKGHIDEFFABCReceiver ExciterPAFan FanSwitchLEDTerminalTabsJ20 P10MAEPF-27080-O
68P81093C75-O November 30, 2000 9-25Module Replacement Procedures Station modules suspected of being faulty must be replaced with modules known to be in good condition in order to restore the station to proper operation. The following procedures provide instructions for replacing each of the station modules and performing any required post-replacement adjustments or programming.General Replacement InformationAnti-Static Precaution The station circuitry contains many C-MOS and other static-sensitive devices. When servicing the equipment, you must take precautionary steps to prevent damage to the modules from static discharge. Complete information on prevention of static protection is provided in Motorola publication number 68P81106E84, available through the Accessories and Aftermarket Division. Some additional precautions are as follows:•A wrist strap (Motorola part number RSX4015A, or equivalent) should be worn while servicing the equipment to minimize static buildup.Figure 11 Chassis Ground Wiring DiagramOutput InputGndNeg Pos HNPower SupplyAC Inlet(Viewed fromUnderside)ChassisGround StudRing LugsNutsLockWashers GRN/YELGRN/YELBROWNORANGEMAEPF-27099-OWARNING: When wearing a Conductive Wrist Strap, be careful near sources of high voltage. The good ground provided by the wrist strap will also increase the danger of lethal shock from accidentally touching high voltage sources.!CAUTION: DO NOT insert or remove station modules with power applied. This may result in damage to the modules.!
9-26 December 1, 2000 68P81093C75-O•Do not insert or remove modules with power applied. Always turn off the station by unplugging the AC and DC cords from the top panel before inserting or removing modules.•All spare modules should be kept in a conductive bag for storage and transporting. When shipping modules to the repair depot, always pack them in conductive material.Care of Gold-Plated Connector Contacts The connectors between the modules and the station backplane board are made with gold-plated card edge connector contacts to provide maximum reliability. Gold-plated materials do not form a non-conductive oxide layer and therefore should not require cleaning under normal conditions.When the modules have been subjected to many extraction/insertion cycles, or if the station is operated in a dusty environment, the contacts may require cleaning. Do not use an eraser or any type of abrasive substance to clean either the module card edge connectors, or the backplane connector contacts.If the cleaning of gold-plated contacts is required, use a soft cloth dampened with alcohol to lightly wipe the contacts. Be sure not to touch the contact surfaces with your fingers; finger oils and salts can contaminate the contact surfaces.Power Down Station Before Removing/Inserting ModulesBefore removing or inserting a module into the station chassis and engaging the backplane connector, be sure to turn off the station power by unplugging the AC or DC power cord, or both.Validating Repairs After replacing a faulty module with a module that is known to be in good condition, perform the following tests to validate the repair.•If the faulty module was detected as the result of running station diagnostics via the RSS, run the diagnostics again after the repair is made to ensure that the replacement module passes all diagnostic tests.•If the faulty module was detected by an operational failure, perform the operation to ensure that the repair corrected the reported or detected failure.Module Replacement This section discusses the replacement of each of the PDR 3500’s modules and related requirements and considerations.
68P81093C75-O November 30, 2000 9-27Station Control Before Removing the Old Station Control ModuleA new SCM contains settings in a codeplug (EEPROM). Those settings can be configured, using the RSS, after the module has been installed. If the old SCM is capable of communicating with the RSS, the old codeplug can be read from the SCM and saved to disk to be programmed into the new SCM. This is described in the Setup and Connections section of this manual, and in the RSS User’s Guide (68P81085E35).If the old SCM is incapable of communicating with the RSS, an archival codeplug (one saved on disk) can be used to program the new SCM. If an archival codeplug is unavailable, the new codeplug will have to be manually configured after installation.Physical Replacement of the Station Control Module1. Turn off the station’s power by unplugging the AC and DC power cords from the top panel.2. Remove the 8 Phillips screws from the edges of the station’s top panel and lift the chassis out of the case.3. Remove the cover plate on the left end of the front of the station by removing two Torx screws from the front of the plate. Remove the four Phillips screws from the side and bottom edges of the plate.4. Pull out the old Control Module by gripping behind its DB-9, RJ-11, and RJ-45 connectors, distributing pressure equally among the connectors.5. Insert the new module. Make sure it is in the cardguides; push it firmly into the chassis until it seats into the card-edge connectors on the backplane. (Do not slam the board against the backplane or push any harder than necessary to seat the connectors.)6. If desired, power up the station while it is still out of the case to make sure the module is securely in place. If the LEDs do not light, are dim, or flash rapidly, one or more modules are not seated properly. Unplug the station before continuing to the next step.7. Reassemble the station by reversing steps 2 and 3.After Installing the New Station Control Module 1. If the codeplug from the old SCM was saved to disk, or if an archival codeplug exists on disk, it should be programmed into the new SCM.
9-28 December 1, 2000 68P81093C75-OIf no preexisting codeplug is available, the new codeplug must be configured manually using the RSS. See the Setup and Connections section of this manual or the RSS User’s Guide (68P81085E35) for details.2. Perform the following alignment procedures as described in the RSS User’s Guide (68P81085E35) or the Setup and Connections section of this manual, or both.•Reference Oscillator Calibration•Squelch Adjust •Power Output •Tx Deviation Gain Adjust•Reference Modulation•RSSI CalibrateFor Wireline-equipped stations only:•Tx Wireline•Rx WirelineFor ASTRO stations only:•Simulcast/ASTRO Launch Time OffsetFor 6809 Trunking stations only:•TDATAWirelinePhysical Replacement of the Wireline Module 1. Turn off the station’s power by unplugging the AC and DC power cords from the top panel.2. Remove the eight Phillips screws from the edges of the station’s top panel and lift the chassis out of the case.3. Remove the cover plate on the left end of the front of the station by removing two Torx screws from the front of the plate. Remove the four Phillips screws from the side and bottom edges of the plate.4. Pull out the old Wireline Module by gripping its front, right corner (where there are no parts on the board).5. Set all jumpers on the replacement board to match those on the faulty board. These include the following:•Input/ouput impedance matching jumpers
68P81093C75-O November 30, 2000 9-29•Two-wire/four-wire select jumper•DC remote control selection jumpers6. Insert the new module. Make sure it is in the cardguides; push it firmly into the chassis until it seats into the card-edge connectors on the backplane. (Do not slam the board against the backplane or push any harder than necessary to seat the connectors.)7. If desired, power up the station while it is still out of the case to make sure the module is securely in place. The LEDs on the Wireline should blink rapidly, indicating that firmware is transferring from the SCM to the Wireline Module. When the blinking stops, the transfer is complete.If any of the LEDs do not light or are dim, one or more of the modules are not seated properly. Unplug the station before continuing to the next step.8. Reassemble the station by reversing Steps 2 and 3.After Installing the New Wireline Module Perform the following alignment procedures as described in the RSS User’s Guide (part number 68P81085E35):•Rx Wireline•Tx WirelineASTRO Modem Card/V.24 Interface CardPhysical Replacement of the Card 1. Remove the Wireline Module as described above.2. Unplug the faulty ASTRO Modem Card or the V.24 Interface Card from the Wireline board by pressing the mounting posts through the back of the board.Install the replacement card by pressing it onto the Wireline board and locking all mounting posts and connectors.3. Re-install the Wireline Module as described above.After Installing the New Card No alignments or adjustments are required. The card is configured by the Station Control Module on power-up.ReceiverPhysical Replacement of the Receiver Module 1. Turn off the station’s power by unplugging the AC and DC power cords from the top panel.2. Remove the eight Phillips screws from the edges of the station’s top panel and lift the chassis out of the case.
9-30 December 1, 2000 68P81093C75-O3. Remove the cover plate on the left end of the front of the station by removing two Torx screws from the front of the plate. Remove the four Phillips screws from the side and bottom edges of the plate. Remove two more Phillips screws from the bottom of the chassis under the preselector.4. A coaxial cable runs from the receiver’s preselector, through the center wall of the chassis, and to the top panel UHF connector.Disconnect the cable from the preselector and push the loose end of the cable through the center wall so that it is completely clear of the receiver.5. Pull the old receiver out by gripping the tabs protruding past each end of the preselector.6. Insert the new module. Make sure it fits under the metal rails inside the chassis. Push it firmly into the chassis until it seats into the card-edge connectors on the backplane. (Do not slam the board against the backplane or push any harder than necessary to seat the connectors.)7. If desired, power up the station while it is still out of the case to make sure the module is securely in place.If any of the LEDs do not light, are dim, or flash rapidly, one or more of the modules are not seated properly.8. For VHF and UHF stations, tune the preselector using the procedure in the Maintenance subsection, Preselector Field Tuning Procedure. Before continuing to the next step, be sure to unplug the station. 9. Feed the coaxial cable detached in Step 3 back through the opening in the center wall of the chassis and reconnect it to the mini-UHF connector on the preselector.10. Reassemble the station by reversing Steps 2 and 3.After Installing the New Receiver Module Perform the following alignment procedures as described in the RSS User’s Guide (part number 68P81085E35), or in the RSS section of this manual, or in both:•Squelch Adjust•RSSI CalibratePreselector tuning is required for proper performance of the Receiver Module and it should have been performed when installing the module, as described under “Physical Replacement of the Receiver Module.” If the tuning was not performed when the module was installed, perform it now.
68P81093C75-O November 30, 2000 9-31ExciterFrequency Band Considerations When replacing the Exciter Module, it is important to remember the frequency-sensitive nature of the Exciter/Power Amplifier combination. The Exciter and the PA must match according to the model breakdown table in this manual. If an Exciter with a new frequency band is being installed, the corresponding PA must be installed, as described in the Power Amplifier subsection of “Module Replacement.”Physical Replacement of the Exciter Module 1. Turn off the station’s power by unplugging the AC and DC power cords from the top panel.2. Remove the eight Phillips screws from the edges of the station’s top panel and lift the chassis out of the case.3. Disconnect the coaxial cable running to a mini-UHF connector at the front of the Exciter.4. Tilt the chassis up on its back edge; then, from the bottom of the chassis, remove the six Phillips screws holding the Exciter’s mounting plate. Slide the mounting plate out of the front of the chassis. 5. Pull out the old Exciter Module by gripping behind the mini-UHF connector and pulling gently.6. Insert the new module. Make sure it is flat on the bottom of the chassis. Push it firmly into the chassis until it seats into the card-edge connectors on the backplane. (Do not slam the board against the backplane or push any harder than necessary to seat the connectors.)7. If desired, power up the station while it is still out of the case to make sure the module is securely in place. If the LEDs do not light, are dim, or flash rapidly, one or more modules are not seated properly. Unplug the station before continuing to the next step.8. Reassemble the station by reversing Steps 2 through 4.After Installing the New Exciter Module Perform the following alignment procedures as described in the RSS User’s Guide (part number 68P81085E35):•Tx Deviation Gain Adjust•Reference ModulationFor ASTRO Simulcast systems only:•ASTRO/Simulcast Launch Time Offset
9-32 December 1, 2000 68P81093C75-OPower Amplifier Frequency Band Considerations When replacing the Power Amplifier, it is important to remember the frequency-sensitive nature of the Exciter/Power Amplifier combination. The Exciter and the PA must match according to the model breakdown table in this manual. If a PA with a new frequency band is being installed, the corresponding Exciter must be installed, as described in the Exciter subsection of “Module Replacement.”Of equal importance, the PDR 3500 motherboard contains circuitry which translates between the Exciter from the original Quantar and the PA from the Spectra™ mobile radio. Since the translations depend upon the frequency band of the Exciter and the PA, this circuitry is also frequency-sensitive. The DIP switches on the motherboard must be set according to the frequency of the station in order for the proper translation path to be selected. The DIP switch settings can remain intact if •The band of the new PA matches the one being replaced, and•The Exciter is not being changed.If the PA band or the Exciter band is being changed, the DIP switches must be configured to match the new frequency of the PA and Exciter. Detach the motherboard from the chassis and set the switches as described in the Backplane subsection of “Module Replacement.”Physical Replacement of the Power Amplifier 1. Turn off the station’s power by unplugging the AC and DC power cords from the top panel.2. Remove the eight Phillips screws from the edges of the station’s top panel and lift the chassis out of the case.3. Remove the four Phillips screws from the front, right quadrant of the top panel to release the PA. When removing the fourth screw, support the PA inside the chassis to prevent it from falling.4. Disconnect all four cables between the PA and the station:a. Unplug the red and black power cable from the PA.b. Unscrew the mini-UHF connector from the PA.c. To remove the PA ribbon cable connector, remove the two Torx screws holding the metal clip over the connector. Pull the connector loose from the PA.d. Unscrew the mini-UHF connector on the remaining cable from the front of the Exciter.
68P81093C75-O November 30, 2000 9-335. Reconnect all four cables removed in Step 4. The ribbon cable connector is keyed so it cannot be attached incorrectly. Remember to reattach the metal clip over the ribbon cable connector.6. Take the sheet of black thermal conductive film that was between the old PA and the chassis and place it on the new PA.7. Place the PA in the chassis and line up the screw holes in the PA and the thermal film with the holes in the top panel of the chassis. (It may be useful to insert a pencil, pen, or small screwdriver through the screw holes in the top panel to aid in aligning the holes in the conductive film with those in the PA.)8. While holding the PA with one hand, start two or more Phillips screws in the top panel to hold the PA in place. Insert the remaining screws and tighten all four.9. Place the chassis back in the case and secure it with the eight Phillips screws around the top panel.After Installing the New Power Amplifier Perform the following alignment procedures as described in the RSS User’s Guide (part number 68P81085E35), or the Setup and Connections section of this manual, or both.•Power OutputPower SupplyPhysical Replacement of the Power Supply 1. Turn off the station’s power by unplugging the AC and DC power cords from the top panel.2. Detach the backplane from the chassis as described in Steps 1 through 7 of the Backplane subsection of “Module Replacement.”3. Remove the four Phillips screws holding the Power Supply to the top panel of the chassis. Pull the PS out of the chassis.4. Disconnect all five wires from the Power Supply.5. Reconnect the wires to the new Power Supply as follows:•Green to GND •Orange to the “H” INPUT •Brown to the “N” INPUT •White to the “POS” OUTPUT •Black to the “NEG” OUTPUT.6. While holding the PS with one hand, start two or more Phillips screws in the top panel to hold the Power Supply in place. Insert the remaining screws and tighten all four.
9-34 December 1, 2000 68P81093C75-O7. Finish reassembling the station as described in Steps 8 through 12 of the Backplane subsection of “Module Replacement.”BackplaneBefore Installing the New Backplane The PDR 3500 motherboard contains circuitry which translates between the Exciter from the original Quantar and the PA from the Spectra™ mobile radio. Since the translations depend upon the frequency band of the Exciter and the PA, this circuitry is also frequency-sensitive. For the proper translation path to be selected, the DIP switches located on the motherboard must be set based on the frequency band of the station.Before installing the new Backplane, set its DIP switches according to Table 9.Physical Replacement of the Backplane 1. Turn off the station’s power by unplugging the AC and DC power cords from the top panel.2. Remove the eight Phillips screws from the edges of the station’s top panel and lift the chassis out of the case.3. Remove the cover plate on the left end of the front of the station by removing two Torx screws from the front of the plate and four Phillips screws from the side and bottom edges of the plate.4. Pull the Station Control Module and Wireline Module until they disengage from their respective backplane connectors. The modules need not be completely removed from the chassis.5. On the back of the chassis, remove the six Phillips screws holding the backplane in place.6. Slowly, but firmly, pull the bottom edge of the backplane away from the chassis. Continue pulling until the 80-pin card edge connectors dislodge from the Receiver and Exciter modules. Then pull the backplane down and away from the top panel of the chassis.7. Lay the backplane flat behind the station, and remove all the attached wires.8. If the dip switches on the new backplane have not been set to match the PA/Exciter combination of the station, set them now according to Table 9.Table 9 Motherboard DIP Switch SettingsExciter Frequency Band PA Model Switch 1 Switch 2VHF Range 1 PLD7981 OFF OFFVHF Range 2 PLD7981 ON OFFUHF Range 1 PLE9367 OFF ONUHF Range 2 PLE9369 ON ON
68P81093C75-O November 30, 2000 9-359. Lay the new backplane behind the station, and attach all the wires as shown in Figure 10: Interconnect Diagram.10. Hold the backplane in position behind the chassis. Ensure the wires from the backplane do not bind against the Power Supply. Slide the top of the board toward the chassis top panel, making sure the two RJ-45 connectors fit into their cutouts.11. Hold the Receiver Module from the front of the chassis, and press the bottom center of the backplane into place against the chassis. Snap the 80-pin connectors onto the Receiver and Exciter.12. While holding the top right portion of the backplane against the chassis, press the Control Module, and then the Wireline Module, into the chassis from the front, until they snap into the backplane.13. Using the six Phillips screws with lock washers, secure the backplane to the chassis.14. Finish reassembling the station by reversing Steps 2 and 3.After Installing the New Power Amplifier Perform the following alignment procedures as described in the RSS User’s Guide (68P81085E35), or the Setup and Connections section of this manual, or both:•Power OutputUsing the RSS, run a complete battery of diagnostics to exercise all boards and modules.Preselector Field Tuning Procedure The VHF and UHF Receiver Modules comprise a circuit board and a preselector assembly. Both are secured in a slide-in module housing. The preselector assembly is a 3-pole (UHF) or a 5-pole (VHF) bandpass filter, equipped with tuning slugs to adjust the passband corresponding to the operating frequencies of the station. The preselector assembly must be field-tuned if replaced in the field, or if the station operating frequency (or frequencies) is (are) modified. The tuning procedure follows.IMPORTANT! Tuning for best SINAD response DOES NOT result in optimum tuning of the preselector assembly. You must use this field-tuning procedure to obtain optimum preselector performance.
9-36 December 1, 2000 68P81093C75-ORequired Test Equipment The following test equipment is required to properly tune the preselector assembly:•RF Signal Generator: Motorola R2600 Communications Analyzer, R2001 Communications Analyzer (see note), or HP8656A signal generator (or equivalent)•Dip/Peak Monitor: HP435B Power Meter (or equivalent) with HP8484A sensitive power head, Boonton Model 92E with BNC input, or R2001/R2600, using the spectrum analyzer function.•Torque Driver, capable of delivering 12 in. – lb. of torque, and 10 mm deep well socket.•Tuning probe: Motorola Part number 0180763D22, part of TRN7799A tuning kit.•Flat-blade screwdriverNOTE: The R2600 Communications Analyzer can both generate and measure simultaneously. The R2001 may be used for either the generator or monitor function, but not both simultaneously. When using the R2001 as a signal generator, RF signal must be taken from the antenna port.VHF Tuning Procedure Calculating Proper Alignment Frequency Use one of the following two methods to calculate the alignment frequency to be generated by the signal generator.For stations with a single receive frequency, calculate the frequency of the alignment signal as follows:Step 1. From the site documentation or the RSS, determine the station receive frequency.Step 2. If the frequency is ≤ 148 MHz (Range 1) or ≤ 156 MHz (Range 2), subtract 250 kHz. Otherwise, note the actual frequency.Example: If the station receive frequency is 134.575 MHz (Range 2), subtract 250 kHz, since the frequency is less than 143 MHz.134.575 MHz - 250 MHz = 134.325 MHz
68P81093C75-O November 30, 2000 9-37Step 3. If Receiver Module is Range 1, determine the alignment frequency as follows:If the frequency (from Step 2) is < 134 MHz, then the alignment frequency = 133.75 MHz.If the frequency (from Step 2) is > 152 MHz, then the alignment frequency = 152 MHz.Otherwise, use the actual frequency from Step 2.Step 4. If the Receiver Module is Range 2, determine the alignment frequency as follows:If the frequency (from Step 2) is < 152 MHz, then the alignment frequency = 151.75 MHz.If the frequency (from Step 2) is > 172 MHz, then the alignment frequency = 172 MHz.Otherwise, use the actual frequency from Step 2.For stations with multiple receive frequencies, calculate the frequencies of the alignment signal as follows:Step 1. From the site documentation, or the RSS, note the receive frequency for each channel supported by the station.Step 2. Calculate a midpoint frequency as follows:Fmid = (Fhighest + Flowest) ÷ 2Step 3. Using Fmid in place of the station receive frequency, perform Step 2 through Step 4 above.Preparing Equipment Step 1. Make sure the Receiver Module (with the Preselector Assembly) is installed in a functional PDR 3500.Step 2. Remove the chassis from its case by removing the eight Phillips screws from the edges of the station’s top panel.Step 3. Remove the two Torx screws from the Receiver Module front panel and remove the four Phillips screws. Remove the panel.Step 4. De-tune the preselector as follows:
9-38 December 1, 2000 68P81093C75-OIf the alignment frequency (calculated in the previous section) is greater than 148 MHz (Range 1), or greater than 156 MHz (Range 2), turn the five tuning screws in (clockwise) until 1/8" protrudes past each of the tension nuts.If the alignment frequency is less than, or equal to 148 MHz (Range 1), or 156 MHz (Range 2), back out (counterclockwise) the five tuning screws until 3/4" protrudes past each of the tension nuts.Step 5. Using the torque driver and deep-well socket, tighten the five tension nuts on the adjustment screws to 6 in. – lb.Step 6. Connect the test equipment as shown in Figure 12.VHF Tuning Procedure Step 1. Provide power to the PDR 3500 through either DC or AC (to provide the active 50 Ω termination).Step 2. Adjust the signal generator to the frequency calculated on page 36. Set the level to +5 dBm.Figure 12 Test Equipment Setup for Preselector Field TuningTension NutTuning ScrewTo Dip/PeakMonitor(RF Millivoltmeteror Power Meter)FromSignalGeneratorTuningProbeToReceiverBoardTo RXConnectoron Top PanelPreselectorAssemblyRX TXMAEPF-27038-O
68P81093C75-O November 30, 2000 9-39Step 3. Insert the tuning probe into the cavity “H1” and adjust tuning screw 1 for a PEAK.Step 4. Leave the tuning probe in cavity “H1” and adjust tuning screw 2 for a DIP.Step 5. Insert the tuning probe into cavity “H2” and adjust tuning screw 3 for a DIP.Step 6. Insert the tuning probe into cavity “H3” and adjust tuning screw 4 for a DIP.Step 7. Insert the tuning probe into cavity “H4” and decrease the output from the signal generator to -5 dBm.Step 8. Adjust tuning screw 5 for a DIP. Then turn tuning screw 5 one-quarter turn counterclockwise. NOTE: The DIP will not be as sharp for screw 5 as it was for screws 2 through 4.UHF Tuning ProcedureCalculating Proper Alignment Frequency Use one of the following two methods to calculate the alignment frequency to be generated by the signal generator.For stations with a single receive frequency, calculate the frequency of the alignment signal as follows:Step 1. From the site documentation, or the RSS, determine the station receive frequency. Add 200 kHz.Step 2. If the Receiver Module is Range 1, determine the alignment frequency as follows:Figure 13 Location of Tuning Screws and Cavity Probe HolesToReceiverBoardToStation ReceiveAntenna PortPreselectorAssemblyMAEPF-27039-OH1H2H3H4H5TUNING SCREW 1TUNING SCREW 2TUNING SCREW 3TUNING SCREW 4TUNING SCREW 5
9-40 December 1, 2000 68P81093C75-OIf the frequency (from Step 1) is > 431 MHz, then the alignment frequency = 431 MHz.If the frequency (from Step 1) is < 405 MHz, then the alignment frequency = 405 MHz.Otherwise, use the actual frequency from Step 1.Step 3. If Receiver Module is Range 2, determine the alignment frequency as follows:If the frequency (from Step 1) is > 468 MHz, then the alignment frequency = 468 MHz.If the frequency (from Step 1) is < 440 MHz, then the alignment frequency = 440 MHz.Otherwise, use the actual frequency from Step 1.Step 4. If the Receiver Module is Range 3 or 4, determine the alignment frequency as follows:If the frequency (from Step 1) is > 518 MHz, then the alignment frequency = 518 MHz.If the frequency (from Step 1) is < 472 MHz, then the alignment frequency = 472 MHz.Otherwise, use the actual frequency from Step 1.For stations with multiple receive frequencies, calculate the frequencies of the alignment signal as follows:Step 1. From the site documentation, or the RSS, note the receive frequency for each channel supported by the station.Step 2. Calculate a midpoint frequency as follows:Fmid = (Fhighest + Flowest) ÷ 2Step 3. Using Fmid in place of the station receive frequency, perform Step 1 through Step 4 above.Preparing Equipment Step 1. Make sure the Receiver Module (with the Preselector Assembly) is installed in a functional PDR 3500.
68P81093C75-O November 30, 2000 9-41Step 2. Remove the chassis from its case by removing the eight Phillips screws from the edges of the station’s top panel.Step 3. Remove the two Torx screws from the Receiver Module front panel and remove the four Phillips screws. Remove the panel.Step 4. Using the torque driver and deep-well socket, loosen the three tension nuts on the adjustment screws.Step 5. De-tune the preselector as follows:Turn tuning screws 3 and 4 clockwise until they bottom out. Be careful not to apply more than 3 in. – lb. of torque to prevent warping the preselector cover and housing.Step 6. Connect the test equipment as shown in Figure 14.Tuning Procedure Step 1. Turn the station power supply ON (to provide the active 50 Ω termination).Step 2. Adjust the signal generator to the frequency calculated on page 39. Set the level to +5 dBm.Figure 14 Test Equipment Setup for Preselector Field TuningFromSignalGeneratorRX TXTension NutTuning ScrewTo Dip/PeakMonitor(RF Millivoltmeteror Power Meter)TuningProbeToReceiverBoardTo RXConnectoron Top PanelPreselectorAssemblyMAEPF-27040-O
9-42 December 1, 2000 68P81093C75-OStep 3. Insert the tuning probe into the cavity “U2” and adjust tuning screw 2 for a PEAK.Step 4. Tighten tension nut on tuning screw 2 to at least 12 in. – lb. and fine tune tuning screw 2 for a PEAK.Step 5. Keep the tuning probe in cavity “U2” and adjust tuning screw 3 for a DIP.Step 6. Tighten tension nut on tuning screw 3 to at least 12 in. – lb. and fine tune tuning screw 3 for a DIP.Step 7. Insert the tuning probe into cavity “U3” and decrease the output from the signal generator to -5 dBm.Step 8. Adjust tuning screw 4 for a DIP. Step 9. Tighten tension nut on tuning screw 4 to at least 12 in. – lb. and fine tune tuning screw 4 for a DIP.Figure 15 Location of Tuning Screws and Cavity Probe HolesToReceiverBoardToStation ReceiveAntenna PortPreselectorAssemblyMAEPF-27041-OU2TUNING SCREW 2U3TUNING SCREW 3U4TUNING SCREW 4
68P81093C75-O December 1, 2000 10-1Functional Theoryof Operation 10The following functional theory of operation provides an overview of the station circuitry. For a more thorough functional description of a particular module, refer to the appropriate section of the Quantar User’s Guide (68P81095E05). Refer to the block diagram in Figure 16. for the following functional theory of operation.Transmitter Circuitry OperationIntroduction The Transmitter Circuitry consists of the following: • Exciter Module • Power Amplifier (PA) Module These modules combine to produce the modulated, amplified RF signal. The RF signal is transmitted via the station transmit antenna.Exciter Module Operation The Exciter Module is a microprocessor-controlled module, generating a modulated RF signal at the desired transmit frequency. It sends this signal to the Power Amplifier for amplification. The circuitry operates as follows:1. The Synthesizer/Voltage-Control Oscillator (VCO) accepts frequency programming data from the Station Control Module (SCM) via the Serial Peripheral Interface (SPI) bus and generates an RF carrier signal at the specified frequency. The modulation audio signal from the SCM modulates the carrier, resulting in a modulated RF signal at approximately +13dBm. The modulated signal is routed to the Power Amplifier.2. The TX Power Control Circuitry accepts an output power detect voltage from the Power Amplifier and compares this signal to a reference voltage representing the desired output power. Based on the comparison, a power control voltage is generated to control the output power from the PA. This feedback and control loop continually monitors the output power. It adjusts the control voltage to maintain the proper output power from the PA.
10-2 December 1, 2000 68P81093C75-OPower Amplifier Module Operation The PDR 3500 uses the mid-power Spectra RF power amplifier (RF PA) board, housed in a heavy-duty, shielded, aluminum heat sink. The gain of the RF PA board is controlled by the power control voltage from the Exciter Module.The modulated RF signal is amplified by the RF PA and sent to the site transmit antenna. The transmit path inside the RF PA contains a directional coupler (calibrated at setup), which feeds a DC voltage (proportional to the output power) to the TX Power Control Circuitry in the Exciter Module. This signal serves as the feedback signal in the power control loop.Receiver Circuitry Introduction The Receiver Circuitry performs the following functions:•Accepts receive RF signals from the site receive antenna •Filters and dual conversion •Outputs a digitized receive signal to the Station Control Module.Receiver Module Operation The receive signal is generated from the site receive antenna to a multi-pole, preselector filter which provides highly selective bandpass filtering. The filtered signal is then amplified and fed to the RF input of the 1st mixer. The 1st mixer combines the filtered signal with an injection signal generated by the Synthesizer/VCO. This results in a 21.45 MHz (VHF), or 73.35 MHz (UHF) 1st IF (intermediate frequency) signal. (The injection signal is determined by frequency programming data from the Station Control Module via the SPI bus.)The 21.45 or 73.35 MHz 1st IF is filtered and routed to a custom receiver IC. This component contains the following circuitry:•2nd injection and mixing •Amplification •A/D (analog to digital) conversion This results in a digitized receive signal. This signal is routed to the Station Control Module as differential data.
68P81093C75-O December 1, 2000 10-3Station Control ModuleIntroduction The Station Control Module (SCM) is the microprocessor-based controller for the station. Major components include the following: •MC68360 microprocessor, •56002 Digital Signal Processor (DSP) •Two Application Specific Integrated Circuit (ASIC) devices (host and DSP). Station Control Module Operation The Host Microprocessor (µP) serves as the controller for the SCM, operating from the station software stored in FLASH memory. This software determines the system capabilities of the station (analog, ASTRO, SECURENET, etc.). The Host µP communicates with the station modules and the SCM circuitry via address and data buses, a High-Level Data Link Control (HDLC) bus, and a Serial Peripheral Interface (SPI) bus. External communications is accomplished using a serial port on the top panel.The DSP and DSP ASIC perform the necessary digital signal processing for the station audio and data signals. The DSP circuitry interfaces with the Receiver Module (receive audio), the Exciter Module (modulation signal), and the Wireline Interface Board (wireline audio).The 2.1 MHz Reference Oscillator generates the reference signal used by the Receiver and Exciter Modules.Wireline Interface BoardIntroduction The Wireline Interface Board (WIB) serves as the interface between the customer telephone lines and the station. In general, the WIB processes and routes all wireline audio signals between the station and the landline equipment (such as consoles, modems, etc.). Landline-to-station and station-to-landline audio signals are connected to the WIB via RJ-45 connectors on the top panel of the station.Wireline Interface Board Operation The WIB contains the following: •A microprocessor
10-4 December 1, 2000 68P81093C75-O•Two FLASH memory ICs (which contain the WIB operating software downloaded by the SCM) •An ASIC device to process and route the various audio signalsAnalog, SECURENET, and ASTRO signals are processed as follows:•Analog signals are converted to digital signals and routed to the Station Control Module via the Time Division Multiplex (TDM) bus.•ASTRO and ASTRO CAI data signals are processed by an ASTRO modem card (the daughter board is plugged into the WIB) and sent to/from the SCM via the HDLC bus. (The station operates in transparent mode only, and does not perform encryption or decryption of the ASTRO or ASTRO CAI signal.)• SECURENET encoded signals are processed by the ASIC, sent to/from the microprocessor via the data bus, and sent to/from the Station Control Module microprocessor via the HDLC bus. (The station operates in transparent mode only, and does not perform encryption or decryption of the SECURENET signal.)NOTE: The WIB is offered in the 4-wire configuration only.Power Supply Module Operation The Power Supply Module is a switching-type power supply which accepts an AC input (85-265 VAC, 49-61 Hz) and generates the 13.8 VDC for the station modules and the power regulation circuitry on the motherboard. The Power Supply Module is capable of 12 A continuous load and 18 A maximum load.
68P81093C75-O January 31, 2001 11-1 Block Diagram, Schematics, Electrical Parts List, Circuit Board Detail, and Chassis Parts List 11
11-2 January 31, 2001 68P81093C75-O Figure 16. PDR 3500 Functional Block DiagramSPI BusTo/From StationControl ModuleSPI BusTo/From StationControl ModuleReceiveAntennaRF Input/Output(Top Panel)RSS Terminal(Laptop Typical)2.1 MHz Ref2.1 MHz Ref2.1 MHz RefVCO & Ref Mod AudioAC Input(Top Panel)DC Input(Top Panel)SwitchingCircuitry +13.8 V+9.6 VSW +5 VLN +5 VRegulatorCircuitryRECEIVER MODULESTATION CONTROL MODULEPOWER SUPPLY MODULEWIRELINE INTERFACE BOARD1stMixer21.45 MHz (VHF)73.35 MHz (UHF)AddressAddress AddressDataData AudioInterfaceBusSPI BusTo/FromStation ModulesTDM BusHDLC BusVCO & RefMod AudioHDLC BusEXCITER MODULE POWER AMPLIFIER MODULE2.1 MHz RefVCO & RefMod AudioPA KeyTX EnableModulated RFTX Forward Power Detect+13 DBMMicroprocessorPowerControlCircuitrySynthesizer/VCO RF SwitchCircuitryDifferential DataDataDataDataAddress2.1 MHz Ref2.1 MHz RefExternalSpeakerHandsetTransmitAntennaPreselectorFilter3-Pole (UHF)5-Pole (VHF)7-Pole (800/900)Synthesizer/VCOBandpassFilteringCustomReceiver IC(2nd Injection,Amplification,A/D Conversion)HostMicroprocessorRSS HostInterfaceMemoryMemoryDSPASICDigitalSignalProcessor(DSP)DSPASICInterfaceWireline AudioFrom StationTo LandlineWireline AudioFrom LandlineTo StationAudioInterfaceCircuitry2.1 MHzReferenceOscillatorAmplifier CouplerPeripheralASICASTROModem MicroprocessorMemory4 - Wire Audio CircuitHostASICMAEPF-27042-O
68P81093C75-O January 31, 2001 11-3 Figure 17. PDR 3500 Schematic Sheet 101111VHF R1VHF R2UHF R1UHF R2POWER SUPPLY +POWER SUPPLY -EXTERNAL DC +EXTERNAL DC -FAN ANTENNA RELAYPA POWERSETTINGS FOR S11 2 BAND0002P3 2P3 1P4 1P1P1 1A+P2 1108U4MC74HC32A123MC74HC32AU4 121311123U4MC74HC32A456MC74HC32AU4 9C22470pFMC74HC32AU93902.8VVR2U15MC33074910 8R16100pF 100pFC19C18100pFC17100pF81A+C16C14S10.1uFC36470pFC35470pFLN+5C340.1uFR281KR2700R261%R250Y1Y05Y12Y24Y3LN+533.2KR24GNDVCC 167 VEE13X12 X014 X115 X211 X3 3231U210A9BENABLE*68MC33074U3131214U3MC33074456U5MC74HC869108LN+5U5MC74HC86123MC74HC86U518VAG 13VDD 20VREF 14VSS10A+7AN78AN89AN9 11CS* 15DIN 17DOUT 16EOC 19SCLKAN01AN12AN10 12AN23AN34AN45AN56AN62U8P2 218.2KR391%P4470pFC474Y30.1uFC4612 X014 X115 X211 X3 3Y1Y05Y12Y210A9B6ENABLE*8GNDVCC 167 VEE13XU13VR52.8VC15R3110K470pF0.1uFC2470pF910 8C1MC33074U3 Y01Y15Y22Y34C210.1uF16VCCVEE7X13X012X114X215X311 Y3U1A10B9ENABLE*6GND839pFC58470pFC37LN+515pF15pFC53 C54C5215pFP5 1A+LN+5LN+5LN+5 LN+5LN+5Y15Y22Y3416.2KR211%VEE7X13X012X114X215X311 Y3Y01U11A10B96ENABLE*GND816VCC6571%10KR48LN+5LN+5LN+5LN+5MC33074U3P10 4P10109.6V2P10 8P10 6470pFP10470pFC42 C45470pFC390.1uFC3811 X3 3Y1Y05Y12Y24Y3ENABLE*68GNDVCC 167 VEE13X12 X014 X115 X2U1210A9BR4220KS172LN+5R4320KP5 3C5939pFL2220nHL8220nHL6220nHL4220nHC23100pF 100pFC24C640.22uF100pF220nHL3C631%R3610K5.62KR321%16.2KR401%R191%1%R3410KR135.62K1%R1216.2K18.2K1%5.62KR101%1%P5 25.62KR310.5KR491%D2657LN+5U16MC74HC00123LN+5Q2DGSU15MC330742A+Q1DGS1P6 2P7 1P7P8 4J9 31P6P8 3C60100pFR4510K231R4420KMC33074U15C56C5539pF39pFC40C5739pFL9220nH100pF1%R3810KR3510KL7220nH220nHL51%1%R122.1K10KR21%R2010K1%R2210.5KR1820K20KR171%1%R422.1K1%R1132.4K1%R55LN+5 LN+51%R5410K 10K1P8 2100pFC68P8C67100pFC69100pFC70100pFC71100pF220nHC72100pFL11220nHL13220nHL12C66100pF100pFC653.9KR6110KR629.6V9.6VQ5DGSR6010K10.5KR371%P9 3P9 4P9 51%R4110.5KP9 2Q4DGSP9 1470pFC62LN+5C61470pFC44470pFC430.22uFC41100pFLN+5LN+5C80 C81100pF220nH100pFR6L10MC74HC00U164561KR59100R3322.6K1%R511.5K6.2KLN+51%R51R5215KR5010K100pFC79100R14LN+510KR91%Q3DGSLED_GREENPTT_REQ_SCPTT_REQ_INV1%R4610K10KR47VFWD_FROM_PA VFINALFORWARDVTEMP_FROM_PAVCONTROLVTEMP_FROM_PAVFWD_FROM_PAPATEMPANTRYKREYEDA+LED_REDLED_GREENLED_REDPTT_SWITCHRESET_SWITCHPTT_REQ_INVPTT_REQ_EXPTT_SWITCHSPIMOSISPIMISOSPICLKA4A3A0-CS1A5A1-CS2A2AMUXCTRLBMUXCTRLX3MUXY3MUXX2MUXY2MUXMAEPF-27076-O
11-4 January 31, 2001 68P81093C75-O Figure 18. PDR 3500 Schematic Sheet 2MBRS330T3SCHOTTKYVR17470pFC76VR32U161470.1uFC75C77100pFVR42VR43VR40VR41VR36VR39VR38VR37VR31 VR30470pFSW+5SENSE2SHDN*8TAB V C13VSWC9U6BOOST64GND5IN71500pFC110.27uFC10VR10R57VR22J22 43R56 0VR21J22VR29VR27VR18VR28VR26VR9J9 18VR25VR6VR8U5 1213115.6VVR33VR34MC74HC865VR24J2 69J5 69J9 52J21J8 15J7 63U4147U3411L14.7UHA+470pFC13D132J8 59M12J2 44J5 44J745J5 45J7 33J5 46J7 34J2VR23A+ 9.6VVR16VR20C7VR14470pFC5 470pF470pFC3 2ADJ3GND5IN 1OUT4SHDN*6TABVR11U73J5 4VR109J5 1J5 2J554J5 59J20MC74HC32A121311J5 53J2MC74HC32AU9 456U9MC74HC32A9108U9C33470pFC320.1uF68J2 71C410uFJ8 58J2 47J2M15J8 17M467J5 47J8 69J9 70J8 51J20 5J8J5 66J7 56J8 61J8 5J6 48LN+5J8 56J20 2J9 75J9 76J9 79J9 53J2 46VR19J5 38J7 2641J9 5030J9 39J9 40J9M5M20J9J5 36J5 57M2120J5 21J5 35J5 18J5 19J578J8 20M87J6 8J8 16J2J6 1J6 2J6J5 54J7 50J9 67J2 80J7 42J7 41J2 7942J5 42J2 7210uFC6J2 13J5 13J280M9J5 12J7 73J7 79J7J6 35J6 52J9 496J2 7J6 39J5 16J2 6J5J2 15J5 15J2 165J2 14J5 14J9 73J9 74J5J9 69J9 71J9 7229J9 51J2 38J7 77J8 21J9J7 78J2 77J8 52M11M14J9 20J8 64M25J20 6J2 75J7 753J8 19J8 62M22J8 50J20J2 17J5 17J8 6865J5 65J7 55J5 41J7 29J243J7 31J2 4149J7 30J2 73J528J9 55J8M19J2 40J5 40J714M24M179J9 13J98J5 8J2 9J540J9 62J5 7J2J2 52J5 52J7J5 51J7 39J9 6138J9 60J2 51J20 1J2 5J7J8 23J9 23J8 5436J8 22J9 68J2 48J5 48J7M7J7 35J9 5610J2 11M276J2 10J5J8 25J2 12J2 76J710J2 27J5 118J9 9J9J9 5J9 6J9 7A+J9J20 4A+J9 3J8 63M10J8 53J2 43M23J5 23J5 24J20 8J2 25J2 26J5 22J7 59M654J8 60J9 77J5 39J7 27J9J7 21J7 22SW+5J2 3919J7 20J7 16J7 17J7 18J7J5 50J7 14J7 15J9 58J2 50J9 24J5 49J7 37J5 32J5 33J9 57J5 30J5 31M18J5 29M3M1M16J2 31J2 32M13J2 28J2 29J2 30J2 3J2 4J2 181J2 2J2 74J7 74J20 7J2J7 8J9 48J7 5J7 6J7 7J5 25J8 24A+J7 47J2 60J5 6024J2 62J5 62J2 22A+J2 23J2J8 57J2 5358J9 11J9 12SW+553J7 54J7 57J751J7 52J74J7 23J7 24J712J7 13J7 3J7J7 10J7 11J7J5 34J2 49J7 9J5 79J5 8028J5 72J5 73J2 34SW+5J5 27J5J2 35J2 36J2 33J2 19J2 20J2 21 J8 72J8 7366J8 70J8 71J8 55J8 65J844J8 47J8 48J7 45J2 56J5 56J7J5 26J5 58J8 26J8 27J7 466J8 13J8 14J2 64J2 67J8J2 59J2 61J2 63J7 65J7 66J7 72J7 61J7 62J7 48J9 65J9 45J9 4780J7 1J7 238SW+5J6 79J615J9 16J9 17J6J7 60J9 78J9J5 67J5 68J5 712J5 63J5 64J8 79J9 1J9J8 75J8 77C50330UF 330UFC51C12330UF 330UFC49LN+5LN+5C48330UF 330UFC838J8 45J8 46LN+530J8 31J8J8 28J2 58J8C31470pF14POWERPOWER POWERPOWERPOWERPOWER7C300.1uFC27470pFU5J2 37J5 37J7 25J7 43J9 59U10DATA2GND1NC3NC1 4NC2 5NC3 6J21 8J22 7J21 6J21 7J22 8J9 66J7 49J9 44J9 46LN+5J6 53J9 191%9.6VU91471%R710.5K16.2KR8470pFC749.6VC260.1uF C28 470pFC29C730.1uFU154110.1uFMC33074U151312 14U16MC74HC00121311MC74HC00U169108J8 29MC78M05ACDTU14123A+ LN+5J9 80VR13VR151J22 6VR123J22 1J21 2J212J21 4J21RESET_SWITCHPTT_REQ_EXPTT_REQ_SCDATARX-GCCAGC1AUXCARRIERCCI-MONITORDATATX-GCCDATAPTT-GCCLINE1+LINE1-LINE2+MONDET-GCCTSTAT-RXCAIETXDATA+_TXAIOJ22RXMUTE-GCCRXPLDETSBI1SEIZERELSEGCSPARE#1SPARE#2SPARE#3SPARE#4SPARE#5SPARE#6SPICLKSPIGRANTSPIMISOSPIMOSITDMCLOCKTDMDATATDMFRAMESYNCTX16.8MHZREFTXD1TXDATA-TXPLINHITGCCTXWIDEBANDAIOVCOAUDIOVCONTROLVFINALFORWARDX2MUXX3MUXY2MUXY3MUXXMITSPIREQDCD1EXTSPARE#1EXTSPARE#10EXTSPARE#11EXTSPARE#12EXTSPARE#2EXTSPARE#3EXTSPARE#4EXTSPARE#5EXTSPARE#6EXTSPARE#7EXTSPARE#8EXTSPARE#9HDLCBUSYHDLCCLKHDLCDATAHST_REQLINE2-LINEPTTDTGCCMUTE-PLSTRIPODC1PATEMPPTTREFAUDIORESETRINGINDICATORRSSI-GCCRSTAT-PAHINHRTS1RX16.8MHZREFRXAUDIORXD1ASYNC+A0-CS1A1-CS2A2A3A4A5AMUXCTRLASYNC-EXTPTT+EXTPTT-RDSTAT-RDSTAT+BMUXCTRLCTS1DATA*1DATA1MAEPF-27077-O
68P81093C75-O January 31, 2001 11-5 Electrical Parts List : Backplane Circuit Board Reference Motorola Part Number Description CAPACITOR, Fixed: pF±5%; 50V Unless otherwise statedC1 2113741B69 0.1uFC2, C3 2113740F67 470C4 2311049A19 10 uFC5 2113740F67 470C6 2311049A19 10uFC7 2113740F67 470C8 2313748R01 330uFC9 2113740F67 470C10 2113743B22 0.27uFC11 2113741F29 1500C12 2313748R01 330uFC13 2113740F67 470C14 2113741B69 0.1uFC15 2113740F67 470C16 thru C19 2113741F01 100C21 2113741B69 0.1uFC22 2113740F67 470C23, C24 2113741F01 100C26 2113741B69 0.1uFC27 2113740F67 470C28 2113741B69 0.1uFC29 2113740F67 470C30 2113741B69 0.1uFC31 2113740F67 470C32 2113741B69 0.1uFC33 2113740F67 470C34 2113741B69 0.1uFC35 thru C37 2113740F67 470C38 2113741B69 0.1uFC39 2113740F67 470C40, C41 2113741F01 100C42 2113740F67 470C43 2113741D28 0.22uFC44, C45 2113740F67 470C46 2113741B69 0.1uFC47 2113740F67 470C48 thru C51 2313748R01 330uFC52 thru C54 2113740F31 15C55 thru C59 2113740F41 39C60 2113741F01 100C61, C62 2113740F67 470C63 2113741F01 100C64 2113741D28 0.22uFC65 thru C72 2113741F01 100C73 2113741B69 0.1uFC74 2113740F67 470C75 2113741B69 0.1uFC76 2113740F67 470C77 2113741F01 100C80 2113741F01 100C81 2113928E01 1uFC82 2113741F01 100 DIODE: See Note. D1 4805129M76 SiliconD2 4813833A12 Silicon JACK: J2 0982407W01 connector, 80-pinJ5 thru J9 0982407W01 connector, 80-pinJ20 2880007R05 connector, 10-pinJ21, J22 0960113B01 connector, RJ-45 COIL, RF: unlessotherwise statedL1 2485721C01 4.7uHL2 thru L13 2462587T19 220nH PLUG: P1 thru P4 2985762C01 terminal, powerP5 2884324M08 header, 3-pinP6, P7 2985762C01 terminal, powerP8 2884324M09 header, 4-pinP9 2884324M10 header, 5-pinP10 2885761C01 connector, 12-pin TRANSISTOR: See Note. Q1 thru Q4 4813821A47 mosfetQ5 4813823A13 mosfet_gsd Electrical Parts List : Backplane Circuit Board Reference Motorola Part Number Description RESISTOR, Fixed: Ω ±5%; 1/8W unless otherwise statedR1 0662057P22 22.1k; 1%R2 0662057P10 10k; 1%R3 0662057P66 5.62k; 1%R4 0662057P22 22.1k; 1%R5 0662057Z35 11.5k; 1%R6 0662057A49 1kR7 0662057P12 10.5k; 1%R8 0662057P16 16.2k; 1%R9 0662057A73 10KR10 0662057P66 5.62k; 1%R11 0662057Y16 32.4k; 1%R12 0662057P16 16.2k; 1%R13 0662057P66 5.62k; 1%R14 0662057A25 100R16 0662057A39 390R17, R18 0662057P20 20k; 1%R19 0662057P18 18.2k; 1%R20 0662057P10 10k; 1%R21 0662057P16 16.2k; 1%R22 0662057P12 10.5k; 1%R24 0662057T73 33.2k; 1%R25 thru R27 0662057B47 0R28 0662057A49 1kR31 0662057A73 10kR32 0662057P66 5.62k; 1%R33 0662057Z26 22.6k; 1%R34 thru R36 0662057P10 10k; 1%R37 0662057P12 10.5k; 1%R38 0662057P10 10k; 1%R39 0662057P18 18.2k; 1%R40 0662057P16 16.2k; 1%R41 0662057P12 10.5k; 1%R42 thru R44 0662057A80 20kR45 0662057A73 10KR46 thru R48 0662057P10 10k; 1%R49 0662057P12 10.5k; 1%R50 0662057A77 15kR51 0662057A73 10kR52 0662057A68 6.2k Electrical Parts List : Backplane Circuit Board Reference Motorola Part Number Description R54 0662057A73 10kR55 0662057A80 20kR56, R57 0662057B47 0R59 0662057A25 100R60 0662057A73 10kR61 0662057A63 3.9kR62 0662057A73 10k SWITCH: S1 4080564C02 dip MODULE: U1, U2 5113805A84 multiplexerU3 5113819A05 Op-amp, quadU4 5113805A13 OR gate, quadU5 5113805A22 XOR gate, quadU6 5185130C93 Regulator, switchingU7 5105109Z13 Regulator, linearU8 5185368C03 A/D converterU9 5113805A13 OR gate, quadU10 5185130C99 Silicon serial numberU11 thru U13 5113805A84 multiplexerU14 5113816A53 Regulator, 5VU15 5113819A05 Op-amp, quadU16 5113805A27 NAND Schmitt trigger DIODE: See Note. VR1 4813833B02 ZenerVR2 4813830A73 Zener, 2.8VVR5 4813830A73 Zener, 2.8VVR6 4813830A15 Zener, 5.6VVR8 thru VR43 4813830A71 Zener, 15V NOTE:For optimum performance, order replacement diodes, transistors, and circuit modules by Motorola part num-ber only. Electrical Parts List : Backplane Circuit Board Reference Motorola Part Number Description
11-6 January 31, 2001 68P81093C75-O Figure 19. PDR 3500 Backplane Circuit Board Detail1U1U11U13 U12BLKBLUREDWHTU6C1C2C3C4C5C6C7C8C9C10C11C12C13C14C15C16C17C18C19C21C22C23C24C26C27C28C29C30C31C32C33C34C35C36C37C38C39C40C41C42C43C44C45C46C47C48C49C50C51C52C53C54C55C56C57C58C59C60C61C62C63C64C65C66C67C68C69C70C71C72C73C74C75C76C77C80C81C82D1D212345755585677787980J212345755585677787980J512345755585677787980J612345755585677787980J712345755585677787980J812342426232577787980J912910J20J21 J22VIEWED FROM SIDE 1L1L2L3L4L5L6L7L8L9L10L11L12L13M1M2M3M4M5M6M7M8M9M10M11M12M13M14M15 M16M17M18M19 M20M21M22M23M24M25P1P2P3P4P5P6P7P8P9121112P10GSDQ1 GSDQ2GSDQ3GSDQ4GSDQ5R1R2R3R4R5 R6R7R8R9R10R11R12R13R14R16R17R18R19R21R22R24R25R26R27R28R31R32R33R34R35R36R37R38R39R40R41R42R43R44R45R46R47R48R49R50R51R52R54R55R56R57R59R60R61R62S18916189161U271814U3711814U47814U51715U71011120U871814U9U10819168916189161U1478141U1571814U16VR1VR2VR5VR6VR8VR9VR10VR11VR12VR13VR14VR15VR16VR17VR18VR19VR20VR21VR22VR23VR24VR25VR26VR27VR28VR29VR30VR31VR32VR33VR34VR36VR37VR38VR39VR40VR41VR42VR43MAEPF-27078-O
68P81093C75-O January 31, 2001 11-7 Mechanical Parts List: PLN1681A Main Chassis Part Number Description Qty Where Used 0200001355 Nut, 8-32 hex 2 Chassis ground stud0200835638 Nut, elastic 4-40 4 AC receptacle and DC connector0200844628 Nut, elastic 6-32 8 Fans0300139392 Screw, 1/4-20 4 Handle0300139800 Screw, 6-32 x .5 4 Preselector0307644M09 Screw 10-32 x .75 8 Chassis to case0307644M12 Screw 10-32 x .375 20 PA, backplane board, receiver and exciter brackets0307644M28 Screw 4-40 x .437 6 RSS connector, DC connector, AC receptacle0310907C83 Screw., M3 x .05 x 8 2 Receiver bracket. 0311995A17 Screw, 6-32 x 1 8 Fans0385865C01 Screw, 8-32 x .250 4 Power supply0385865C02 Screw, 8-32 x .312 8 Duplexer and duplexer cover0400002645 Washer, lock #6 ext. 4 Preselector0400002646 Washer, lock #8 int 2 Ground stud0400007652 Washer, lock #10 ext 6 Backplane board0400119331 Washer, split lock 4 Handle0400490775 Washer, flat #6 2 Preselector0407643M01 Washer, flat #10 8 Chassis to case0485061D01 Spacer 2 Spacer for panel RF connectors0705723V01 Clip, PA 10785688C01 Bracket, receiver 10785689C01 Bracket, exciter 11505432W01 Cover, PA 11585693C01 Cover, duplexer 12785687C01 Chassis 12800048250 Adapter, right angle UHF 2 On TX and RX port2885828C01 AC Receptacle w/ fuse holder 13082933N02 Line cord 13085697C01 Coax cable, Exciter to PA 13085698C01 Cable, ribbon RSS 13085699C01 Cable, ribbon PA 13085700C01 Cable, PA power 1 PA to backplane board3085701C01 Cable, DC power 13085702C01 Coax cable, PA to top panel 13085702C02 Coax cable, receiver to top panel 13085703C01 Wire, brown 1 Power supply to AC receptacle3085703C02 Wire, orange 1 Power supply to AC receptacle3085703C03 Wire, green/yellow 1 Chassis to AC inlet3085703C04 Wire, black 1 Power supply to backplane board3085703C05 Wire, white 1 Power supply to backplane board3085703C06 Wire, green/yellow 1 Chassis to power supply3085786C01 Coax cable, Duplexer to RX port 13085786C02 Coax cable, Duplexer to TX port 14085732C01 Assembly, PTT/LED 14385800C01 Standoff, hex 2 Preselector4685799C01 Card guides 25507519M04 Handles 25882273C01 Adapter, N antenna 1 On duplexer5985731C01 Fan assembly 26500139837 Fuse, 3A 250V 27505658W01 Thermal pad, PA 17582200H01 Pad, gray 67582200H14 Pad, black 87585798C01 Feet, rubber 4
4 Motorola8000 West Sunrise BoulevardFort Lauderdale, Florida 33322 68P81093C75-O

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