Motorola Solutions 92FT5809 PDR3500 Transportable Repeater User Manual 93C75 O PRINTCover

Motorola Solutions, Inc. PDR3500 Transportable Repeater 93C75 O PRINTCover

Users Manual

1 PDR 3500Transportable Repeater Basic Service Manual
68P81093C75-A 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1A, 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 68P81093C75-A 7 - Setup and Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1 Programming with RSS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1Connecting PC to PDR 3500 RSS Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1Using the RSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2Status Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2Hardware Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2Channel Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-4Alignment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-6Electrical Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-9Power Supply Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-9RF Cabling Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-10Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-10Separate RX and TX Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-10Duplexer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-10 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-9Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-9Verifying Transmitter Circuitry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-10Required Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-10Verifying Transmitter Circuitry Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-10Verifying Receiver Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-14Required Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-14Verifying Receiver Circuitry Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-15Verifying Receiver Circuitry (Digital-Capable Stations) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-20Required Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-21Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-22Module Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-24Module Replacement Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-25General Replacement Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-25Anti-Static Precaution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-25Care of Gold-Plated Connector Contacts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-25Power Down Station Before Removing/Inserting Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-26Validating Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-26Module Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-26Station Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-26Physical Replacement of the Station Control Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-26After Installing the New Station Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-27Wireline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-28Physical Replacement of the Wireline Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-28
68P81093C75-A iii After Installing the New Wireline Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-28ASTRO Modem Card/V.24 Interface Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-29Physical 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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-30Frequency Band Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-30Physical Replacement of the Exciter Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-30After Installing the New Exciter Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-31Intermediate Power Amplifier (800 MHz Stations only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-31Physical Replacement of the IPA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-31After Installing the New IPA Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-32Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-32Frequency Band Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-32Physical Replacement of the Power Amplifier. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-33After Installing the New Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-34Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-34Physical Replacement of the Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-34Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-35Before Installing the New Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-35Physical Replacement of the Backplane. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-35After Installing the New Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-37Preselector Field Tuning Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-37Required Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-37VHF Tuning Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-38Calculating Proper Alignment Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-38Preparing Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-39VHF Tuning Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-40UHF Tuning Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-41Calculating Proper Alignment Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-41Preparing Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-42Tuning Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-43 10 - Functional Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1 Transmitter Circuitry Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1Exciter Module Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1Intermediate Power Amplifier Module Operation (800 MHz stations only) . . . . . . . . . . . . . . . . . . . . . . . . 10-2Power 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-4Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-4Wireline Interface Board Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-4Power Supply Module Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-5 11 - Block Diagram, Schematics, Electrical Parts List, Circuit Board Detail, and Chassis Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
iv 68P81093C75-A List of Tables Table 1. Model Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1Table 2. Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2Table 3. Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2Table 4. Specifications, continued . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3Table 5. RSS Settings for PA Power Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-3Table 6. UHF R3/R4 Output Power Translation Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-5Table 7. Alignment Power by Frequency Band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-7Table 8. Switches, Pushbuttons, and Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1Table 9. Summary of LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1Table 10. Switches, Pushbuttons, and LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-2Table 11. PDR 3500 LED Indicator Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-6Table 12. Motherboard DIP Switch Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-35 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. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-8Figure 6. Test Equipment Setup for Verifying Transmitter Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11Figure 7. Test Equipment Setup for Verifying Receiver Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-16Figure 8. A—Coupled receiver connection (Top). B—Coupled duplexer connection (Bottom) . . . . . . . . . . . . .9-18Figure 9. Disabling the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-19Figure 10. Interconnect Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-23Figure 11. Chassis Ground Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-24Figure 12. Module Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-24Figure 13. Test Equipment Setup for Preselector Field Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-40Figure 14. Location of Tuning Screws and Cavity Probe Holes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-41Figure 15. Test Equipment Setup for Preselector Field Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-43Figure 16. Location of Tuning Screws and Cavity Probe Holes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-44Figure 17. PDR 3500 Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-3Figure 18. PDR 3500 Schematic—Part I (Sheet 1 of 2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-4Figure 18. PDR 3500 Schematic—Part I (Sheet 2 of 2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-5Figure 19. PDR 3500 Schematic—Part II (Sheet 1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-6Figure 19. PDR 3500 Schematic—Part II (Sheet 2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-7Figure 20. PDR 3500 Backplane Circuit Board Detail (Sheet 1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-9Figure 20. PDR 3500 Backplane Circuit Board Detail (Sheet 2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-10 Parts Lists Electrical Parts List: Backplane Circuit Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-8Mechanical Parts List: PLN1681A Main Chassis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-12
68P81093C75-A 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 68P81093C75-A 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.): 1-800-422-4210, 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-A 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 68P81093C75-A 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-A 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 46 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 68P81093C75-A 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-A 4-1 System Applications 4 Local 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 Operation The 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 NOTE: RJ-45 cables for cross band operation are 1 to 1.
4-2 68P81093C75-A Notes
68P81093C75-A 5-1 Models and Specifications 5 Model Chart Table 1. Model Structure Model Description P2066B VHF Range 1 (132-154 MHz)P2067B VHF Range 2 (150-174 MHz)P2068B UHF Range 1 (403-433 MHz)P2069B UHF Range 2 (450-470 MHz)P2070B UHF Range 3 (470-482 MHz)P2071B UHF Range 4 (494-512 MHz)P2072B UHF Range 3.5 (482-494 MHz)P2073A 800 MHz Kit Description X PLD1177_ Receiver VHF R1 X PLD1178_ Exciter VHF R1 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 XX PLE1258_ Receiver UHF R3 X X PLE1259_ Exciter UHF R3 X PLE1260_ Receiver UHF R4 X PLE1261_ Exciter UHF R4 X PLE1262_ Receiver 800 MHz X PLE1263_ Exciter 800 MHz XXXXXXXX PLN1682_ Board, Control XXXXXXXX PLN1681_ Chassis, main XXXXXXXX PLN7776_ Case, portable XXXXXXXX PLN7777_ Board, backplane XXXXXXXX PPN6026_ Power supply X X PLD7981_ PA, VHF X PLE9367_ PA, UHF R1 X X PLE9380_ PA, UHF R3 XX PLE9381_ PA, UHF R4 X PLF7695_ PA, 800 MHz X PLF7696_ Intermediate PA, 800 MHz X X PFD6060_ Duplexer, VHF XXXXX PFE6060A Duplexer, UHF X PFF4011_ Duplexer, 800 MHz XXXXXXXX PAN6003A Antenna, mag mount XXXXXXXX PDR7778A Label XXXXXXXX PBN6048A Packing x = Indicates one of each is required.
5-2 68P81093C75-A 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.H338AC Add: Transit Case Adds a transit case for increased protection during transport. Table 3. Specifications GENERAL VHF UHF 800 MHz Standard model numbers P2066B, P2067B P2068B, P2069B, P2070B, P2071B, P2072BP2073AChannel spacing 12.5, 25, 30 kHz 12.5, 25 kHz 12.5, 25 kHzStability 0.0001% 0.0001% 0.0001%Preselector bandwidth (3 dB) 4 MHz 4 MHz 19 MHz (full-band)Squelch Carrier, PL, DPL Carrier, PL, DPL Carrier, PL, DPLNumber of modes 1 1 1 TRANSMITTER VHF UHF 800 MHz RF power (without duplexer) 30 watts 30 watts, 25 watts for P2071B 22 wattsRF power (with duplexer) 20 watts 20 watts, 17 watts for P2071B 15 wattsMaximum transmit duty cycle 50% 50% 50%TX spurs/harmonics -60 dB -60 dB -60 dBFM noise (EIA) -45 dB nominal -45 dB nominal -45 dB nominalAudio response per EIA per EIA per EIATX distortion (1 kHz, clear audio) <5% <5% <5% RECEIVER VHF UHF 800 MHz Sensitivity (20 dBQ) 0.35 µV 0.5 µV 0.40 µVSensitivity (12 dB SINAD) 0.25 µV 0.35 µV 0.30 µVSelectivity (EIA SINAD) 85 dB (25/30 kHz)75 dB (12.5 kHz)85 dB (25 kHz)75 dB (12.5 kHz)80 dB (25 kHz)70 dB (12.5 kHz)Intermod (EIA SINAD) 80 dB (25/30 kHz)75 dB (12.5 kHz)75 dB 75 dBSpurious and image 80 dB 80 dB 80 dB Note: Specifications are subject to change without notice.
68P81093C75-A 5-3 Table 4. Specifications, continued DUPLEXER Repeat frequency spread, TX/TX: 300 kHzVHF minimum duplexer T-R separation 132-174 MHz: 3 MHzUHF minimum duplexer T-R separation 403-512 MHz: 3 MHz800 MHz duplexer T-R separation: 45 MHz POWER SOURCE AC 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: 2.0 A DIMENSIONS Size (English): 20.00 x 15 x 7.75 inchesSize (metric): 508 x 381 x 197 mm WEIGHT Weight (English): 46 lbs with duplexer43 lbs without duplexerWeight (metric): 20.9 kg with duplexer19.5 kg without duplexer Note: Specifications are subject to change without notice.
5-4 68P81093C75-A Notes
68P81093C75-A 6-1 Approved Accessories 6 General 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
6-2 68P81093C75-A Notes
68P81093C75-A 7-1 Setup and Connections 7 Programming with RSS Introduction 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 68P81093C75-A Connect 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). Status Panel The “Status Panel” screen in the RSS can be used to change the channel of the PDR 3500, view parameters for the current channel, and view the status of several station functions.From the Main Menu, press “F2-Service.” Next, press “F6-Status Panel…” and then F2 again to arrive at the Status Panel display.The Status Panel shows the current channel number and the Transmit and Receive frequencies for the current channel. In the middle of the screen, the states of several station components are shown, mirroring LED indicators on the front of the station modules. For the PDR 3500, the “AC” field indicates whether the station’s internal DC voltage is above the threshold required for full transmit power. Near the bottom of the screen, the most recent status message is displayed. NOTE: The date and time of the status message will be incorrect if the station has lost power since the internal clock was last set.The current channel can be changed by pressing F2 to increment the channel number and Shift+F2 to decrement the channel number. Other available commands are listed in the soft menu at the bottom of the screen and include resetting, access-disabling, and keying/dekeying the station.For a complete description of the Status Panel fields and commands, please 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 and 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.
68P81093C75-A 7-3 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 based on Table 5. All PDR 3500 transmitter ranges except UHF R3 and R4 use the Quantar low-power station profile. However, there is no low-power UHF R3 or R4 Quantar, so the high-power profiles are used for those ranges. NOTE: Since high-power Quantar profiles are used for UHF R3 and UHF R4 PDR 3500’s, which put out 30 and 25 watts respectively, Table 6 must be used to translate from actual power output to the power levels specified in RSS. In particular, the table must be used for Power Out alignment and configuration of Channel Information . The table is located in the Alignment section of this manual.5. Check that the Power Supply field shows “AC HIGH.” This setting remains the same regardless of whether the PDR 3500 is running off of AC or DC power. NOTE: Older units may require the Power Supply field to be set to “AC LOW.” If this is the case, the station will report a mismatch when validating the hardware configuration as described below. If such an error is reported, change the Power Supply field to “AC LOW” and repeat the validation.6. If the unit is equipped with a Wireline Card, verify that the Wireline field is set to “4-WIRE” or “8-WIRE” as appropriate.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). Table 5. RSS Settings for PA Power Rating Transmitter Band RSS PA Power Rating VHF R1 (5-30 W)VHF R2 (5-30 W)UHF R1 (5-30 W)UHF R2 (5-30 W)25 WattsUHF R3 (5-30 W) 110 WattsUHF R4 (5-25 W) 100 Watts800 MHz (5-22 W) 20 Watts
7-4 68P81093C75-A 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 and 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 frequencies 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 support 2 receivers.The station will automatically calculate the Tx Idle Frequency based on the TX-RX spacing for the channel. In most applications, the TX Idle Frequency will be 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 the Tx Frequency -6.25kHz.2. Set the modulation type to either Analog, ASTRO, ASTRO CAI, Analog/ASTRO CAI, or CAI RX WIDE DEV.3. Move to page 2 of the Channel Information Screen by pressing the Page Down key. Set the Normal Tx Power Out to the desired power level, unless the station being programmed is UHF R3 or UHF R4. If the station transmitter is UHF R3 or UHF R4, the power output must be translated using Table 6 due to a difference between the power range in RSS and the actual power range of the station.All bands except UHF R3 and UHF R4 use the low power Quantar station profile, meaning the station is RSS programmed as a low power station, and the actual output power of the station matches what is programmed in RSS. For UHF R3 and UHF R4, however, there is no low power Quantar profile, so the high power profile is used. Thus, all power settings in RSS for those bands are based on a range of 20-120W for R3 and 20-110W for R4. Since the actual output power of the PDR 3500 is 5-30W for R3 and 5-25W for R4, Table 6 must be used to translate actual power into RSS power. The “Actual Power” column corresponds to the power out of the PDR 3500 while the “RSS Power” column corresponds to power levels to be entered in RSS during the alignment process.For example, to set a UHF R3 station to transmit at 15 watts, “60” should be entered in the Normal Tx Power Out field of RSS, as specified in Table 6.
68P81093C75-A 7-5 Table 6. UHF R3/R4 Output Power Translation Table Actual Power (W)RSS Power UHF R3 (W)RSS Power UHF R4 (W) Station lower limit 5 20 206 24 24.5728298 32 33.59363810 40 42.511 44 4712 48 51.513 52 5614 56 60.515 60 6516 64 69.517 68 7418 72 78.519 76 8320 80 87.521 84 9222 88 96.5UHF R4 alignment power 22.8 10023 92 10124 96 105.5UHF R4 upper limit 25 100 11026 10427 108UHF R3 alignment power 27.5 11028 11229 116UHF R3 upper limit 30 120
7-6 68P81093C75-A 4. The Battery Backup field specifies the output power of the station when a low DC supply voltage is detected by the station. This field is intended primarily for use in DC-powered applications such as running off a car battery.The Battery Backup setting should be 10 watts or less and should typically be lower than the Normal setting. The station will switch from the Normal to the Battery Backup power setting when A+ on the backplane drops below approximately 12 volts for UHF R4 or approximately 11 volts for all other ranges. NOTE: Because the PDR 3500 can draw up to 10 amps during high-power transmission, there can be a significant drop in voltage through a DC power cable. If the station reverts to low-power mode while operating off of DC, a shorter DC cable may help.5. In DC-powered applications, the Over Air and Over Wireline Alarm Tone fields specify whether the station will transmit an alert tone when a low-voltage condition is detected. Setting either of these fields to “ENABLED” will cause the station to periodically transmit a beep via that path (air or wireline) while operating at the Battery Backup power setting. See the Interpreting Alarm Tones heading of the Troubleshooting section of this manual for more information.For a more complete description of the Channel Information 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. Before performing any alignments, at least one channel must be programmed as described under the Channel Information heading.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.1. 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
68P81093C75-A 7-7 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: The output power of the PDR 3500 is aligned to a predetermined reference level near the upper limit of the station. This level is the same irrespective of the desired output power of the station, and is specified for each frequency band based on Table 7.The power output alignment process is basically a feedback loop: The station attempts to transmit at the alignment power level from Table 7. The user checks the power on a wattmeter and tells the station what power it is actually putting out. The station then adjusts its output power to get closer to the alignment power. This process is repeated for the desired level of accuracy.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 Table 7. Alignment Power by Frequency Band Frequency Band Rated Power Alignment Power VHF R1, VHF R2 30 W 25 WUHF R1, UHF R2 30 W 25 WUHF R3 30 W 27.5 W (110 W in RSS)UHF R4 25 W 22.8 W (100 W in RSS)800 MHz 22 W 20 W
7-8 68P81093C75-A R-2670 Communications Analyzer, or to the input of an RF power meter. The duplexer is bypassed for this alignment. 3. Press F6 to keyup the station.4. Check the output power level shown on the R2670 or RF power meter.5. Press F9 to dekey the station.6. Enter the power from the meter in the field shown in RSS, or for a UHF R3 or UHF R4 station, enter the translated RSS Power from Table 6. See the Channel Information heading and Table 6 for more information on power translation.7. Press F7 for the PDR 3500 to adjust the PA power output level.8. Once the unit adjusts the power (about 2 seconds), again keyup the station and read the RF power from the meter, then dekey the station.9. Repeat steps 3 through 8 until the power output is as close to the alignment power from Table 7 as possible. If the power output will not adjust properly, press F4 to initialize the PA and restart the alignment procedure.10. Press F8 to save the settings to the station codeplug.11. Exit the Power Alignment screen by pressing F10, then key the station using the top-panel PTT switch. Verify that the power being put out is what is programmed in the station codeplug. NOTE: It is not necessary to dekey the station after each power reading, however if the station is keyed continuously it must periodically be given time to cool to ensure proper alignment. If at any point the station has remained keyed for over 1 minute, it is recommended to dekey it and allow it to cool for approximately 30 seconds before continuing with the alignment procedure.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.
68P81093C75-A 7-9 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. Electrical Connections Power Supply Connections • AC Input Power ConnectionEach 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 between +12 V and +14 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.
7-10 68P81093C75-A RF Cabling Connections Introduction 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. • DuplexerUsing 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 cables (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-A 8-1 Operation 8 Description This section describes the switches, pushbuttons, connectors, and LED indicators on the PDR 3500 used during local operation and servicing of the station. Summary of Switches, Pushbuttons, and Connectors The 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 8. Switches, Pushbuttons, and Connectors Top Panel Wireline connectors Transmit UHF connectorRSS port connector Receive UHF connectorDC connector Antenna relay connectorAC connectorMomentary PTT/Reset switch Table 9. Summary of LED Indicators Top Panel Station Control Module Power/Transmit LED Station OnStation FailIntcm/Acc DControl ChRx 1 ActiveRx2 ActiveRx FailAux LED
8-2 68P81093C75-A Figure 2. Switches, Pushbuttons, Connectors, and LED Indicators for PDR 3500 Table 10. Switches, Pushbuttons, and LED Indicators Item Name Purpose A 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 to +14 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 Troubleshooting 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; Station Fail; Intcm/Acc D; Control Ch; Rx 1 Active; Rx2 Active; Rx Fail; Aux LED.Duplexer WirelineConnections(RJ-45)Antenna RelayConnector(3-pin)Antenna TransmitUHF JackReceiveUHF JackABCDEFMAEPF-27065-O
68P81093C75-A 9-1 Troubleshooting 9 Introduction 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 modules Recommended 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 (50 Ω , 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 68P81093C75-A Many 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 Overview Introduction 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 Checkout Procedure 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 Problem Procedure 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 Procedures Perform 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 9-25.
68P81093C75-A 9-3 Figure 3. PDR 3500 Troubleshooting Overview (Procedure 1: Routine Maintenance)ROUTINE MAINTENANCE 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 68P81093C75-A Figure 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 9-25GO TO MODULE REPLACEMENT PROCEDURES ON page 9-25
68P81093C75-A 9-5 Figure 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 9-25REPLACE FAULTY MODULE AS DESCRIBED IN MODULE RELACEMENT PROCEDURES BEGINNING ON page 9-25
9-6 68P81093C75-A Interpreting 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 3 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 11. Table 11. PDR 3500 LED Indicator Functions LED Location LED Name Status Definition EXCITER 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 expected power level (as set by technician via RSS during station alignment)– OFF when:PA not keyed or PA 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 keyed or PA 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 key NOTE : Any component associated with the PA could cause LED to light. These include the Exciter, PA, and transmitter circuitry on the backplane, as well as the Intermediate PA in an 800 MHz station.– FLASHING when PA is in the Test Mode (activated by technician via RSS;when in Test Mode, power cutback, and open power loop protection aredisabled)– OFF when PA output power is either at expected level, or at specific cutbacklevels (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-A 9-7 STATION 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 codeplugSquelch 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 when SAM 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 duringdiagnostics run at time of power-up, or during normal operationAux LED – GREEN LED available for special application functionAll LEDsFlashing On and Off in Unison– Station is in Software download mode, either initiated by the RSS, or due to software 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 11. PDR 3500 LED Indicator Functions (Continued) LED Location LED Name Status Definition
9-8 68P81093C75-A Figure 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
68P81093C75-A 9-9 Interpreting Alarm Alert Tones Introduction 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 Window Number of BeepsAlarm Condition Name Alarm Condition Description 1Battery Revert Alarm is reported when low DC voltage is detected by the station. (Threshold depends on station Tx frequency band.) Alarm is cleared when DC voltage returns to normal.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 Should not occur in PDR 3500.
9-10 68P81093C75-A Verifying Transmitter Circuitry Introduction While 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 • Intermediate Power Amplifier Module (800 MHz stations only) • Power Supply Module • 2.1 MHz Reference Oscillator Circuitry • Transmitter-related circuitry on the Station Control Module (SCM) and Backplane boardIn 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 (50 Ω , 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
68P81093C75-A 9-11 Figure 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
9-12 68P81093C75-A Step 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-Intermediate Power Amplifier Module failure (800 MHz stations only)-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), align 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
68P81093C75-A 9-13If the station still does not generate rated power, suspect the following:-Power Amplifier Module failure-Intermediate Power Amplifier Module failure (800 MHz stations only)-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 or IPA module (800 MHz stations only).•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.
9-14 68P81093C75-A•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.•Remove test equipment.•Restore the station to normal service.•Return to the trouble shooting flow chart to resume the troubleshooting sequence.Verifying Receiver CircuitryIntroductionWhile 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)
68P81093C75-A 9-15IMPORTANT! 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.Verifying Receiver Circuitry Procedure Step 1. Connect test equipment by performing Step 1 through 3 shown in Figure 5.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 3 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
9-16 68P81093C75-AStep 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
68P81093C75-A 9-17Step 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)•800 MHz: 0.30 µV (-117.5 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 6.)
9-18 68P81093C75-AStep 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 7. 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
68P81093C75-A 9-19Step 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 6B.•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 6B.)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 dB•800 MHz: 1.5 dBIf the difference is greater, suspect the following:•Duplexer receive and transmit ports are reversed•Loose or damaged cables between the duplexer and the stationFigure 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
9-20 68P81093C75-A•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.)Step 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 and duplexer transmit frequencies do not match. 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
68P81093C75-A 9-21•Power Supply Module•2.1 MHz Reference Oscillator Circuitry•Receiver-related circuitry in the Station Control Module (SCM)The 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 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)
9-22 68P81093C75-A•UHF: 0.35 µV (-116 dBm)•800 MHz: 0.30 µV (-117.5 dBm)If you are injecting RF through a duplexer, change the R2670 injection signal level to:•VHF: 0.29 µV (-117.7 dBm)•UHF: 0.43 µV (-114.4 dBm)•800 MHz: 0.35 µV (-116 dBm)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.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 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 9-24 for a detailed diagram of the connections from the AC inlet connector to the power supply and chassis ground.
68P81093C75-A 9-23Figure 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 supplyC Power supply terminals POS, NEGBackplane 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, BLKPA 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 cable (VHF, UHF)L Exciter mini-UHF IPA input SMB RF drive coaxial cable (800 MHz)M IPA output SMB PA Final RF drive coaxial cable (800 MHz)AC JackPowerSupplyMotherboardDCRxTxRSSP5P9JGHIDEFFABCReceiver ExciterPAVHF, UHFK800 MHzLMFan FanSwitchLEDTerminalTabsJ20 P10MAEPF-27080-OIPA
9-24 68P81093C75-AModule Locations Refer to Figure 12 for the locations of modules within the station chassis.Figure 11. Chassis Ground Wiring DiagramOutput InputGndNeg Pos HNPower SupplyAC Inlet(Viewed fromUnderside)ChassisGround StudRing LugsNutsLockWashers GRN/YELGRN/YELBROWNORANGEMAEPF-27099-OFigure 12. Module LocationsMAEPF-27030-OStation Control ModulePower Amplifier(PA) Module AC Power Supply(inside chassis)Wireline ModuleIntermediate PowerAmplifier (IPA) Module(800 MHz stations only)Receiver Module(800 MHz version shown) Exciter ModuleBackplaneDuplexer
68P81093C75-A 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.•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 ContactsThe 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.WARNING: 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 68P81093C75-AIf 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.Station 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.
68P81093C75-A 9-273. Remove the cover plate on the left end of the front of the station by removing the two screws from the front of the plate, then removing 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.If 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 Wireline
9-28 68P81093C75-AFor 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 the two screws from the front of the plate, then removing 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•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 Wireline
68P81093C75-A 9-29ASTRO 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.3. Remove the cover plate on the left end of the front of the station by removing the two screws from the front of the plate, then removing the four Phillips screws from the side and bottom edges of the plate. In VHF and UHF stations only, remove two more Phillips screws from the bottom of the chassis under the preselector.4. A coaxial cable runs from a mini-UHF connector at the front of the receiver, through the center wall of the chassis, and to the top panel UHF connector.Disconnect the cable from the receiver and push the loose end of the cable through the center wall so that it is completely clear of the receiver.5. If the station is 800 MHz, pull the receiver mounting plate from its position on top of the receiver out of the chassis.6. Pull the old receiver out by gripping the tabs protruding past each end of the preselector for VHF and UHF stations, or by gripping the mini-UHF connector for 800 MHz stations.7. Insert the new module. Make sure it sits flat against the bottom of the chassis. Push it firmly into the chassis until it seats into the card-edge connector on the backplane. (Do not slam the board against the backplane or push any harder than necessary to seat the connectors.)
9-30 68P81093C75-A8. Reinsert the receiver mounting plate and reattach the receiver coaxial cable by reversing Steps 4 and 5.9. 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.10. 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.11. 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.ExciterFrequency 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. For 800 MHz stations, also unplug the SMB connector at the left end of the IPA (output to the PA) and the 3-pin connector at the rear of the IPA module. If there is not enough room to disconnect this cable, it may alternatively be disconnected in the next step when the Exciter mounting plate has been partially extracted from the chassis.
68P81093C75-A 9-314. 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 OffsetIntermediate Power Amplifier (800 MHz Stations only)Physical Replacementof the IPA 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 form the edges of the station’s top panel and lift the chassis out of the case.3. 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.4. Disconnect the coaxial cables running to each end of the IPA module. Also disconnect the 3-pin connector at the rear of the IPA module. The Exciter mounting plate may need to be partially extracted from the chassis in order to remove the cables.
9-32 68P81093C75-A5. Slide the Exciter mounting plate out of the chassis with the IPA module still attached.6. Remove four Phillips screws from the corners of the IPA module, and lift the module off of the Exciter mounting plate.7. Set the new IPA module in place on the plate, making sure the 3-pin header is towards the rear of the station.8. Slide the Exciter mounting plate back into the chassis, reattaching the 3 cables removed in Step 4.9. At this point, the station may be powered up while it is still out of the case to make sure the new IPA module is functioning properly. Unplug the station before continuing to the next step.10. Reassemble the station by reversing Steps 2 and 3.After Installing theNew IPA Module Perform the following alignment procedures as described in the Setup and Connections section of this manual:•Power OutputPower AmplifierFrequency 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.”
68P81093C75-A 9-33Physical 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 backplane as described in the Backplane replacement subsection, but disengage only the PA ribbon cable connector (P10) and the red and black power leads (two tab connectors closest to the bottom edge of the backplane). All other cables can remain connected.4. 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.5. 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. For VHF and UHF stations, unscrew the mini-UHF connector on the remaining cable from the front of the Exciter. For 800 MHz stations, unplug the SMB connector on the cable going to the left end of the IPA module. To access the connector, it may be necessary to partially slide out the Exciter mounting plate as described in the Intermediate PA replacement subsection.6. 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.7. Take the sheet of black thermal conductive film that was between the old PA and the chassis and place it on the new PA.8. 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.)9. 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.
9-34 68P81093C75-A10. Reconnect the PA ribbon and power cables to the backplane, making sure the ribbon connector latches securely. Make sure all other cables are attached and reattach the backplane as described in the Backplane replacement subsection.11. If desired, power up the station while it is still out of the case to verify the PA is connected properly. Unplug the station before continuing to the next step.12. 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 Setup and Connections section of this manual:•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 8 of the Backplane subsection of “Module Replacement.”3. Remove the four Phillips screws holding the Power Supply to the top panel of the chassis.4. Disconnect all five wires from the Power Supply, then pull the Power Supply out of the chassis.NOTE: To access the wires, it may be necessary to remove either the PA or Exciter module as described in the respective Module Replacement subsection.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.7. Finish reassembling the station as described in Steps 11 through 18 of the Backplane subsection of “Module Replacement.”
68P81093C75-A 9-35BackplaneBefore 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 12.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. 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.4. Remove the cover plate on the left end of the front of the station by removing two screws from the front of the plate, then removing the four Phillips screws from the side and bottom edges of the plate. For VHF and UHF stations, also remove the two screws under the Receiver’s preselector.5. Pull the Station Control Module and Wireline Module (if applicable) away from the backplane until they disengage from their backplane connectors (approximately 1/2"). The modules need not be completely removed from the chassis.6. For non-800 MHz stations, a coaxial cable runs from the receiver’s preselector through the center wall of the chassis. Disconnect the cable from the preselector and push the loose end of the cable through the center wall so that it is clear of the receiver.Table 12. Motherboard DIP Switch SettingsStation ModelExciter Band PA Model Switch 1 Switch 2 Switch 3 Switch 4P2066 VHF R1 PLD7981 OFF OFF OFF OFFP2067 VHF R2 PLD7981 ON OFF OFF OFFP2068 UHF R1 PLE9367 OFF ON OFF OFFP2069 UHF R2 PLE9380 ON ON OFF OFFP2070/P2072UHF R3 PLE9380/PLE9381OFF OFF ON OFFP2071 UHF R4 PLE9381 ON OFF ON ONP2073 800 MHz PLF7695 OFF ON ON OFF
9-36 68P81093C75-A7. Pull the Receiver and Exciter Modules away from the backplane until they disengage from the backplane card edge connectors (approximately 1/2").NOTE: Be careful to not put any tension on the coaxial cables between the Exciter, PA, and IPA (for 800 MHz). If necessary, disconnect one or more of the cables as described in the Exciter Module replacement subsection.8. On the back of the chassis, remove the six Phillips screws holding the backplane in place. Pull the backplane down and away from the chassis.9. Disconnect all of the wires and cables from the backplane.10. 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 9.11. Attach all the wires to the new backplane as shown in Figure 10. Interconnect Diagram.12. Hold the new backplane in position behind the chassis. Ensure the wires from the backplane do not bind against the Power Supply or Exciter modules. Slide the top of the board toward the chassis top panel, making sure the two RJ-45 connectors fit into their cutouts in the top panel, and push the backplane flat against the back of the chassis.13. Start the six Phillips screws with lock washers to hold the backplane in place, but do not tighten them.14. While applying opposing pressure to the backplane on the back of the chassis, push the Receiver, Exciter, Station Control, and Wireline (if applicable) modules back into the chassis until they snap into the card edge connectors on the backplane. (Do not slam the modules against the backplane or push any harder than necessary to seat the connectors.)15. Reattach any cables which were removed from the Receiver, Exciter, or IPA.16. Tighten the six Phillips screws holding the backplane to the chassis.17. At this point, the station may be powered up while it is still out of the case to make sure the new backplane is correctly attached and functioning properly. If any of the LEDs do not light, are dim, or flash rapidly, one or more of the modules are not seated properly. Unplug the station before continuing to the next step.18. Reassemble the station by reversing Steps 2 through 4.
68P81093C75-A 9-37After Installing the New Backplane Perform the following alignment procedures as described in the Setup and Connections section of this manual:•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.Required Test EquipmentThe 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.
9-38 68P81093C75-AVHF 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.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 MHzStep 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.
68P81093C75-A 9-39Step 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:If 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 13.
9-40 68P81093C75-AVHF 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 9-38. Set the level to +5 dBm.Step 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.Figure 13. Test Equipment Setup for Preselector Field TuningTension NutTuning ScrewTo Dip/PeakMonitor(RF Millivoltmeteror Power Meter)FromSignalGeneratorTuningProbeToReceiverBoardTo RXConnectoron Top PanelPreselectorAssemblyRX TXMAEPF-27038-O
68P81093C75-A 9-41NOTE: 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:If 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 < 452 MHz, then the alignment frequency = 452 MHz.Otherwise, use the actual frequency from Step 1.Figure 14. Location of Tuning Screws and Cavity Probe HolesToReceiverBoardToStation ReceiveAntenna PortPreselectorAssemblyMAEPF-27039-OH1H2H3H4H5TUNING SCREW 1TUNING SCREW 2TUNING SCREW 3TUNING SCREW 4TUNING SCREW 5
9-42 68P81093C75-AStep 4. If the Receiver Module is Range 3, determine the alignment frequency as follows:If the frequency (from Step 1) is > 492 MHz, then the alignment frequency = 492 MHz.If the frequency (from Step 1) is < 472 MHz, then the alignment frequency = 472 MHz.Otherwise, use the actual frequency from Step 1.Step 5. If the Receiver Module is Range 4, determine the alignment frequency as follows:If the frequency (from Step 1) is > 510 MHz, then the alignment frequency = 510 MHz.If the frequency (from Step 1) is < 496 MHz, then the alignment frequency = 496 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 54 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.
68P81093C75-A 9-43Step 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 15.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 9-41. Set the level to +5 dBm.Step 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.Figure 15. Test Equipment Setup for Preselector Field TuningFromSignalGeneratorRX TXTension NutTuning ScrewTo Dip/PeakMonitor(RF Millivoltmeteror Power Meter)TuningProbeToReceiverBoardTo RXConnectoron Top PanelPreselectorAssemblyMAEPF-27040-O
9-44 68P81093C75-AStep 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 least12 in. – lb. and fine tune tuning screw 4 for a DIP.Figure 16. Location of Tuning Screws and Cavity Probe HolesToReceiverBoardToStation ReceiveAntenna PortPreselectorAssemblyMAEPF-27041-OU2TUNING SCREW 2U3TUNING SCREW 3U4TUNING SCREW 4
68P81093C75-A 10-1 Functional Theoryof Operation 10 The 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 17 for the following functional theory of operation. Transmitter Circuitry Operation Introduction The Transmitter Circuitry consists of the following: • Exciter Module • Intermediate Power Amplifier (IPA) Module (800 MHz stations only) • Power Amplifier (PA) ModuleThese 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 or, in 800 MHz stations, to the Intermediate Power Amplifier. 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, or, in 800 MHz stations, to the Intermediate 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.
10-2 68P81093C75-A 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. Intermediate Power Amplifier Module Operation (800 MHz stations only) The 800 MHz PDR 3500 uses a custom, 50 Ω input and output, variable-gain Intermediate Power Amplifier to boost the RF signal from the Exciter Module to the final Power Amplifier Module. The RF input to the IPA from the Exciter can vary from +13 to +16 dBm, and the IPA is factory-tuned to provide an RF output of approximately +21 dBm to the PA.The IPA contains an RF amplifier IC, a voltage regulator and potentiometer used to provide a control voltage to the IC, and impedance-matching circuitry. A 3-wire cable carries +5V, ground, and PTT signals from the backplane to the IPA. The IPA is mounted on top of the Exciter bracket and is RF shielded. Power 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 from the Exciter or IPA (in 800 MHz stations) 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. In VHF and UHF stations, the preselector is tunable and is mounted to the front of the main Receiver module. In 800 MHz stations, the preselector is fixed and is internal to the Receiver.
68P81093C75-A 10-3 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 and 800 MHz) 1st IF (intermediate frequency) signal. VHF and UHF receivers use high-side injection; 800 MHz receivers use low-side injection. (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) conversionThis results in a digitized receive signal. This signal is routed to the Station Control Module as differential data. Station Control Module Introduction 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.
10-4 68P81093C75-A 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 Board Introduction 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 • 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.
68P81093C75-A 10-5 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.
10-6 68P81093C75-A Notes
68P81093C75-A 11-1 Block Diagram, Schematics, Electrical Parts List, Circuit Board Detail, and Chassis Parts List 11
11-2 68P81093C75-A
68P81093C75-A 11-3 Figure 17. 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 and 800 MHz)AddressAddress AddressDataData AudioInterfaceBusSPI BusTo/FromStation ModulesTDM BusHDLC BusVCO & RefMod AudioHDLC BusEXCITER MODULE POWER AMPLIFIER MODULE2.1 MHz RefVCO & RefMod AudioPA KeyTX EnableModulated RFVHF, UHFTX 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-A800 MHz+13 DBM +21 DBMIPABackplaneTranslationCircuitryBackplaneTranslationCircuitry
11-4 68P81093C75-A Figure 18. PDR 3500 Schematic—Part I (Sheet 1 of 2)111111 800 MHZ000 UHF R30128V RIPPLEFAN ALARMFAN ONBAT V0 UHF R4AC FAILBAT TEMPUHF R2POWER SUPPLY +0023ANTENNA RELAYSETTINGS FOR S1POWER SUPPLY -EXTERNAL DC +EXTERNAL DC -FAN 0BAND28V14V0MOD FAILVHF R1VHF R2UHF R11010001000010IPA4HS TEMPPA POWERC41100pF1KR6R59100U5456U5MC74HC86123MC74HC86C109LN+5LN+51%R3322.6K100pFLN+515pFC833.9KR61R629.6VP10410K39pFC58MC33074U206571%10KR2A+LN+51%R1710K10KR18R5210K100pFLN+5MC74HC86U5121311C11061%R511.5K5.62KR821%P10100pFC102R841%10KR851%10KVFWD_XLATED10K1%R3810K1%R39100pFC10132.4KR641%P31470pFC100C99470pFC67100pF100pFC68L13220nHLN+5C95470pFR1615K1%16.2KR401%5.62KR32R5110K9.6V15K6R602MC74HC32AU9123U4MC74HC32A45100pFP1R633.01KU15MC330749108C69P411%1A+P32P2P62P71P72J931P61S181S17239pF220nHL2LN+5P53C5915pF15pFC54A+C52R4320KLN+5123MC74HC32AU4121311P91MC74HC32AU49108U4MC74HC32AQ4DGSLN+5109.6VP1010.5KR311%MC33074U15131214470pFC10610KR9Q3DGSLN+5DOUT 16EOC 19SCLK 18VAG 13VDD 20VREF 14VSS10AN45AN56AN67AN78AN89AN9 11CS* 15DIN 17U8AN01AN12AN10 12AN23AN34LN+5P51LN+5P52LN+51%LN+515pFC532Y24Y3P425.62KR313X12 X014 X115 X211 X3 3Y1Y05Y110A9BENABLE*68GNDVCC 167VEEP22U1MC74HC40522P11A+Y34P92P93X012X114X215X311 Y3Y01Y15Y22U1MC74HC40529A10B96ENABLE*GND816VCCVEE7X13MC33074U15231P102P108R422.1K39pFC56470pF1%470pFC42 C45470pFC390.1uFC38R50100pFC11320K100R14C10.1uFD2U15MC33074657Q1DGS20KR42P95U20MC33074131214P94C5539pFP8120KR741%A+S154R10211.5KLN+53.01KR103DGS1%R10110.5K1%Q6LN+539pFC857320KR88LN+5D3J9C2470pFQ5DGS231MC74HC132ADU169108MC33074U20C103100pF22.1K2.21K1%R411%R13C5739pFR7833.2KS162.49K1%R771%C97LN+5C96470pF4P112LN+50.1uF1%P111P11710.5KR991%11.5KR100U22MC330746527.4KR831%U5MC74HC86910822.6KR811%470pFR7920KC98DGSP83Q2C60100pFR4510KR4420KR1052.43K13.7K78.7R1041%1%11U22MC330742311%R106R805.62KU16MC74HC132AD121320KR981%SW3INVSW2A5PTT_REQ_INVSW3INVSW3SW2SW1SW1LED_REDLED_GREENLED_REDPTT_SWITCHRESET_SWITCHLED_GREENPTT_REQ_INVSW3SPIMOSISPIMISOSPICLKA4A3A0-CS1A1-CS2A2VFWD_FROM_PAVCONTROLVTEMP_FROM_PAVFWD_FROM_PAANTRYKREYEDA+312456971013Control Voltage Translation: Vo = 1.38 • Vi + 3.46.When the Exciter is not present, Q6 grounds the control voltage to prevent the PA from keying. When the Exciter is present, J9-73 is grounded, turning Q6 off and enabling the control voltage.Q4 and Q5 provide keyed 9.6V to the PA when PTT is detected. R61 biases Q5 to turn off at a lower gate voltage.Power Supply feedback A/D converter.Low DC voltage detection circuitry with hysteresis. With switch 4 OFF, U16 pin 8 goes low when VDC drops below 11.0V and goes back high when VDC returns to 11.36V. With switch 4 ON, the thresholds become 12.1V and 12.5V, respectively. R99 through R102 are necessary because U22 operates at 9.6V.Power Supply SPI bus address recognition. Address is 011001.Power/Tx LED driver circuit. The operational amplifier acts as a comparator to detect forward voltage from the PA. If forward voltage is present, the red LED is turned on, otherwise the green LED is turned on.Circuit to OR the PTT signals from the Station Control Module and the top-panel PTT/reset switch. C107, in concert with R55, serves to debounce the switch.Forward Voltage Translation. U12, U19, and peripheral circuitry translate the Forward Voltage (Vfwd) from the PA to the Exciter. The appropriate translation circuit is selected by the positions of switches 1, 2, and 3 of S1. The equations implemented are as follows:Forward Voltage Translation EquationsRange DIP Settings EquationVHF R1 & R2 000x/100x Vo = 1.95 • Vi - 2.5UHF R1 & R2 010x/110x Vo = 0.8 • Vi - 0.6UHF R3 001x Vo = 0.93 • Vi - 0.6UHF R4 101x Vo = 0.8 • Vi - 0.6800 MHz 011x Vo = 0.83 • Vi - 0.6123456789
68P81093C75-A 11-5 Figure 18. PDR 3500 Schematic—Part I (Sheet 2 of 2)DNPDNPDNPDNPDNPDNPLN+51%10KR481%5.62KR1020KR89LN+5MC74HC132ADU16456C37470pF470pFLN+5LN+50.1uFC90X311 Y3Y01Y15Y22Y34C89ENABLE*6GND816VCCVEE7X13X012X114X2150U1MC74HC40528A10B9100pFR58C1920KR65R5320K20KR29R281KX311 Y3Y015Y1Y22Y346ENABLE*GND816VCC7VEEX13X012X114X215U1MC74HC40521A10B9C35C66470pF100pF 100pFC65L3C430.22uF220nH16.2KR371%LN+5LN+5C70100pF100pFC71100pFC721%R3427.4KC91470pF220nHL7220nHL6L5L4220nH100pF220nHLN+5C23C80100pF0.1uFC340R2720KR251%MC33074U3131214C640.22uF10KR471%R3610K18.2KR191%470pFC93C92470pF470pFC94220nHL11020KR30R26C62470pF470pFLN+5C61470pFC44470pFC36R2010K1%R2210.5K1%A+0.1uFC14C17100pF4Y312 X014 X115 X211 X3 3Y1Y05Y12Y210A9BENABLE*68GNDVCC 167VEE13XLN+5U2MC74HC4052X311 Y3Y01Y15Y22Y34ENABLE*6GND816VCCVEE7X13X012X114X215C18U1MC74HC4052A10B91%100pF10.5KR4916.2KR211%C47C46470pF3Y1Y05Y12Y24Y30.1uF8GNDVCC 167VEE13X12 X014 X115 X211 X3U1MC74HC4052310A9B6ENABLE*100pFC16MC33074U3657LN+5LN+5C790.1uF14 X115 X211 X3 3Y1Y0Y152Y24Y310A9BENABLE*68GNDVCC 16VEE713X12 X0100pFC24U1MC74HC40527C63100pF470pFC88MC33074U39108L10220nH1%1%R4610KR9015K33.2KR241uFC107C86470pF470pFC87470pFC22470pFC150.1uFC21R6915K470pFLN+5C84100pFC401%R7510KLN+5LN+5LN+5LN+5R9220KR931KR911.5KLN+5R76L12220nHC7827.4K1%LN+5470pF2.7KR67LN+52.2KR661%R3516.2KR135.62K1%LN+51%R1216.2KLN+5LN+5100pFC811%R1132.4KR54 R5520KU16MC74HC132AD12320KC10822.1KR97231100pFMC33074U3C25470pFR73R711.5KR721.5K15KR7015KLN+5220nHL9LN+5L8220nH18KR681%R9518.2KLN+5R941%20KPTT_SWITCH1%R9633.2KPTT_REQ_INVPATEMPVFINALFORWARDY2MUXX2MUXY3MUXX3MUXBMUXCTRLAMUXCTRLSW3SW2SW1SW3INVVTEMP_FROM_PASW3INVSW1SW2SW3PTT_REQ_SCPTT_REQ_EX12118VFWD_XLATEDThese op-amps are part of the forward voltage translation. They subtract 0.6V from the forward voltage and serve as buffers.PA Identification. U11 and U17 select the PA ID resistors read by the Exciter to determine the frequency band of the PA and the backplane DIP switch settings. Do-not-place resistors are included for possible future use and should not be placed in normal applications.Temperature Voltage Translation: U13, U18, U3, and peripheral circuitry translate the Temperature Voltage (Vtemp) from the PA to the Exciter. The appropriate translation circuit is selected by the positions of switches 1, 2, and 3 of S1. The equations implemented are as follows:R98 prevents the op-amp U15 pin 8 from railing high when not in use and impairing the proper function of U12.Temperature Voltage Translation EquationsRange DIP Settings EquationVHF R1 & R2 000x/100x Vo = -0.55 • Vi + 3.05UHF R1 & R2 010x/110x Vo = -Vi + 5.12UHF R3 & R4 001x/101x Vo = -1.69 • Vi + 8.32800 MHz 011x Vo = -0.67 • Vi + 3.9710111213
11-6 68P81093C75-A Figure 19. PDR 3500 Schematic—Part II (Sheet 1 of 2)5J2 68J2 71J21J8 5872J9 74J9 69J9 71J9J9 5120J9J9 40J9 41J9 50J9 30J9 39M20M929J9J5 2J5 3J5 4J5 1J5 59J2 80J2 79J2 72M19J7 80M17J8 5LN+576J9 79J9 75J9J5 24J2 73J5 22J5 23J2 25J2 2657J5 35J5 36J5J5 19J5 20J5 21J5 18J9 2333J9 68J5 31J5 32J5M18J5 29J5 30J7 79M1649J7 73J9A+J9 6J2 23J2 2413J9 14J9J7 19J7 17J9 24J5 79J5 8028J5 72J5 73J5 27J5278J9 9J9 10J2J9 7J2 1J93J9 56A+J9A+J7 5J7J8 26J8 27J5 25J8 13J8 1464J2 67J8 6A+J2J7 21J7 22SW+5J7 18J7 52J7 20J7 16J7 24J7 14J7 15J7 10J7 11J7 9J5 34J5 68J5 7132SW+5J2 30J2 31J2J2 18J2 28J2 29J2 2J2 3J2 4J8 658J9 48J7 7J7J5 26J2 63J2 22J9 11J9 12SW+5J7 54J7 57J7 5851J7 5323J9 47J7J7 13J7 3J7 4J7J6 80J7 12J6 38SW+5J6 79J2 33J2 34J5 6721J2 35J2 36J2 19J2 20J271J8 72J8 73J8 70J8J8 48J8 55J8 66J8 47J8 31J8 3828J8 30J8DATA2GND1NC3NC14NC25NC36J2 61U1066J7 72J2 5962J7 65J7J7 61J7J9 19J9 44J7 1J7 2J9 45J5 64J8 29J9 1J9 2J5 6377J8 79J8 75J8J8 45J8 46J20 96J22J9 80VR65.6V78J8 76J8 80J8J7 49J22 8J9 664623451J9J6 53W1PTT_REQ_EXPTT_REQ_SCCOAX_GNDVFINALFORWARDX2MUXX3MUXY2MUXY3MUXPATEMPAMUXCTRLBMUXCTRL3L14 and C8 function as a low-pass filter to block interference at the switching frequency of U6 (500kHz) from reaching A+ and getting out of the station on AC or DC power wires. The filter is necessary for the station to meet FCC guidelines for line conducted emissions. R86 and R87 allow the filter to be bypassed if necessary in future designs, but in normal use, R86 should not be placed, and R87 should be a 0Ω jumper.R56 and R57 are included to provide for a unidirectional crosspatch between stations using a single RJ-45 cable. In normal use, the resistors should not be placed.W1 is a connection for Ethernet. The ground on W1 should remain isolated from chassis ground.M1 through M25 are for future addition of a MRTI connector.1234
68P81093C75-A 11-7 Figure 19. PDR 3500 Schematic—Part II (Sheet 2 of 2)MBRS330T3SCHOTTKYDNPVR33VR2447M4J2M15J8 175J2 14VR43J5 14J536J2 38J9 56J2 48J5 48J7M7J7 35J2 11M2VR36M25J2 69J5 69J9 52J8 15J7 63J8 64U3411J2 75J7 7519J8 62J20 6J8 50J20 3J817J8 68M22J2 17J501500pFC1120KR879.6V4.7UHL14R86A+9.6VC105470pFVR23VR20U4147M5VR38VR30VR39SW+5VR31J2 44C9470pFBOOST64GND5IN7SENSE2SHDN*8TAB VC13VSWJ5 45U6LT13740.27uFC10VR10R57MC74HC32AU9456J22 4C33470pFC410uFC320.1uF42J5 42J5 12J2 13J5 13J2J8 69L14.7UHA+470pFC13D132J8 59M1256J5 44J734J2 45J7 33J8J5 46J7J5 38J7 26J9 53VR19J2 77J7 77J8 21M14J7 78IN1OUT4SHDN*6TABM21M11U7LT1129C0 2ADJ3GND5VR10VR11J6 854J6 2U9MC74HC32A121311J5 53J2J7 42U9MC74HC32A9108C655J8 4910uF40J5 40J7 28J9J267J5 4770J8 51J20 5J8J5 66J7 56J9J8 61J6 48J2 16J20 2J2 15J2 4643J7 31J2 41J7 30J5M6J8 52J7 59J8 20M8J8 16J2 78J5 51J6 7J9 61J7 50J9 67J6 1J7 41J5 54J8 23J8 54J8 22M2439J6 35J6 52J5 6J2 7J615J5 16J2 665J7 55J529J2 65J5J8 63M10J5 41J78J2 43M2360J5 60J20J2 62J5 62J7 47J277J9J5 8J2 9J5 962J5 7J2 852J7 40J9J7 39J2 52J560J2 51J2 5J7 38J9J7 37J9 58J20 157J5 49J976J2 10J5 10M125J2 12J2 76J7J5 11J874J7J8 53J20 424J8J9 54J8 60J2 39J5 39J7 27J5 50J2 50J2 49J9 16J9 17J7 60J9 78J9 15M13M3J20 7J2 7456J5 58J7 45J2J7 460.1uFC31470pFU5147C3025C27470pFJ5 37J7J8 57J2 53J7 48R710.5K16.2KR81%9.6V470pFC741%C260.1uF9.6VC8LN+5330UF44J5 56J7J2 58J7 43J9 59J2 37J9 65470pFC290.1uFC28MC78M05ACDTU14123A+ LN+5330UFC51330UFC49C50330UFC48330UFJ21 4C12330UFLN+5LN+5J22 2411U20MC330749108U20VR27VR21VR29VR25VR28VR2618470pFC3VR9J9VR8C1040.1uFVR34VR12VR13J21 2J21 1J21 3J22 1VR159108U22MC33074131214470pFC112MC33074U22VR16VR14C5470pFC7470pFVR17VR18J22 3VR320VR22R56C77100pFVR429.6VVR40VR41LN+5U22POWERPOWERPOWER POWERPOWERPOWERPOWERPOWER411C76470pF147C750.1uFU167J21 8J22 7J21 6J210.1uFC1111470.1uFC73U9VR37 U15411RESET_SWITCHDATARX-GCCAGC1CCI-MONITORDATATX-GCCDATAPTT-GCCLINE1+LINE1-LINE2+MONDET-GCCTSTAT-RXCAIETXDATA+_TXAIOAUXCARRIERRXMUTE-GCCRXPLDETSBI1SEIZERELSEGCSPARE#1SPARE#2SPARE#3SPARE#4SPARE#5SPARE#6SPICLKSPIGRANTSPIMISOSPIMOSITDMCLOCKTDMDATATDMFRAMESYNCTX16.8MHZREFTXD1TXDATA-TXPLINHITGCCTXWIDEBANDAIOVCOAUDIOVCONTROLXMITSPIREQDCD1EXTSPARE#1EXTSPARE#10EXTSPARE#11EXTSPARE#12EXTSPARE#2EXTSPARE#3EXTSPARE#4EXTSPARE#5EXTSPARE#6EXTSPARE#7EXTSPARE#8EXTSPARE#9HDLCBUSYHDLCCLKHDLCDATAHST_REQLINE2-LINEPTTDTGCCMUTE-PLSTRIPODC1PTTREFAUDIORESETRINGINDICATORRSSI-GCCRSTAT-PAHINHRTS1RX16.8MHZREFRXAUDIORXD1ASYNC+A0-CS1A1-CS2A2A3A4A5ASYNC-EXTPTT+EXTPTT-RDSTAT-RDSTAT+CTS1DATA*1DATA1421
11-8 68P81093C75-A Electrical Parts List : Backplane Circuit Board Reference Motorola Part Number Description CAPACITOR, Fixed: pF±5%; 50V Unless otherwise statedC1 2113741B69 0.1 uFC2 thru C3 2113740F67 470C4 2311049A19 10 uF, 25VC5 2113740F67 470C6 2311049A19 10 uF, 25VC7 2113740F67 470C8 2313748R01 330 uF, 16V, 20%C9 2113740F67 470C10 2113743B22 0.27 uF, 16VC11 2113741F29 1500C12 2313748R01 330 uF, 16V, 20%C13 2113740F67 470C14 2113741B69 0.1 uFC15 2113740F67 470C16 thru C19 2113741F01 100C21 2113741B69 0.1 uFC22 2113740F67 470C23 thru c24 2113741F01 100C25 2113740F67 470C26 2113741B69 0.1 uFC27 2113740F67 470C28 2113741B69 0.1 uFC29 2113740F67 470C30 2113741B69 0.1 uFC31 2113740F67 470C32 2113741B69 0.1 uFC33 2113740F67 470C34 2113741B69 0.1 uFC35 thru C37 2113740F67 470C38 2113741B69 0.1 uFC39 2113740F67 470C40 thru C41 2113741F01 100C42 2113740F67 470C43 2113741D28 0.22 uFC44 thru C45 2113740F67 470C46 2113741B69 0.1 uFC47 2113740F67 470C48 thru C51 2313748R01 330 uF, 16V, 20%C52 thru C54 2113740F31 15C55 thru C59 2113740F41 39C60 2113741F01 100C61 thru C62 2113740F67 470C63 2113741F01 100C64 2113741D28 0.22 uFC65 thru C72 2113741F01 100C73 2113741B69 0.1 uFC74 2113740F67 470C75 2113741B69 0.1 uFC76 2113740F67 470C77 2113741F01 100C78 2113740F67 470C79 2113741B69 0.1 uFC80 thru C81 2113741F01 100C83 2113740F31 15C84 2113740F67 470C85 2113740F41 39C86 thru C88 2113740F67 470C89 2113741B69 0.1 uFC90 thru C95 2113740F67 470C96 2113741B69 0.1 uFC97 thru C100 2113740F67 470C101 thru C103 2113741F01 100C104 2113741B69 0.1 uFC105 thru C106 2113740F67 470C107 2113928E01 1 uF, 10VC108 thru C110 2113741F01 100C111 2113741B69 0.1 uFC112 2113740F67 470C113 2113741F01 100 DIODE: See Note.D1 4805129M76 SiliconD2 4813833A12 SiliconD3 4813832C77 Zener, 24V JACK: J2 0982407W01 Connector, 80-pinJ5 thru J9 0982407W01 Connector, 80-pinJ20 2880007R05 Connector, 10-pinJ21 thru J22 0960113B01 Connector, RJ-45 COIL, RF: Unless otherwise statedL1 2485721C01 4.7 uHL2 thru L13 2462587T19 220 nHL14 2485721C01 4.7 uH PLUG: P1 thru P4 2985762C01 Terminal, powerP5 2884324M08 Header, 3-pinP6 thru P7 2985762C01 Terminal, powerP8 2882984N18 Plug, 3-pin rt. angleP9 2884324M10 Header, 5-pinP10 2885761C01 Connector, 12-pinP11 2884324M09 Header, 4-pin TRANSISTOR: See Note.Q1 thru Q4 4813821A47 P MOSFETQ5 thru Q6 4813823A13 N MOSFET RESISTOR, Fixed: W±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 0662057Z25 16.2k, 1%R9 0662057A73 10kR10 0662057P66 5.62k, 1%R11 0662057Y16 32.4k, 1%R12 0662057Z25 16.2k, 1%R13 0662057P66 5.62k, 1% Electrical Parts List : Backplane Circuit Board Reference Motorola Part Number Description R14 0662057A25 100R16 0662057A77 15kR17 0662057A73 10kR18 0662057P10 10k, 1%R19 0662057P18 18,2k, 1%R20 0662057P10 10k, 1%R21 0662057Z25 16.2k, 1%R22 0662057P12 10.5k, 1%R24 0662057T73 33.2k, 1%R25 thru R26 Not PlacedR27 0662057B47 0R28 0662057A49 1kR29 Not PlacedR30 0662057B47 0R31 0662057P12 10.5k, 1%R32 0662057P66 5.62k, 1%R33 0662057Z26 22.6k, 1%R34 0662057P27 27.4k, 1%R35 0662057Z25 16.2k, 1%R36 0662057P10 10k, 1%R37 0662057Z25 16.2k, 1%R38 thru R39 0662057P10 10k, 1%R41 0662057P49 2.21k, 1%R42 thru R44 0662057A80 20kR45 0662057A73 10kR46 thru R48 0662057P10 10k, 1%R49 0662057P12 10.5k, 1%R50 0662057A80 20kR51 0662057A77 15kR52 0662057A73 10kR53 Not PlacedR54 thru R55 0662057A80 20kR56 thru R57 Not PlacedR58 0662057B47 0R59 0662057A25 100R60 0662057A73 10kR61 0662057A63 3.9kR62 0662057A73 10kR63 0662057T79 3.01k, 1%R64 0662057Y16 32.4k, 1%R65 Not PlacedR66 0662057A57 2.2kR67 0662057A59 2.7kR68 0662057A79 18kR69 thru R70 0662057A77 15kR71 0662057A53 1.5kR72 0662057A77 15kR73 0662057A53 1.5kR74 0662057A80 20kR75 0662057P10 10k, 1%R76 0662057P27 27.4k, 1%R77 0662057P53 2.49k, 1%R78 0662057T73 33.2k, 1%R79 0662057A80 20kR80 0662057P66 5.62k, 1%R81 0662057Z26 22.6k, 1%R82 0662057P66 5.62k, 1%R83 0662057P27 27.4k, 1%R84 thru R85 0662057P10 10k, 1%R86 Not Placed Electrical Parts List : Backplane Circuit Board Reference Motorola Part Number Description R87 0662057B47 0R88 thru R89 0662057A80 20kR90 0662057A77 15kR91 0662057A53 1.5kR92 Not PlacedR93 0662057A49 1kR94 0662057P20 20k, 1%R95 0662057P18 18,2k, 1%R96 0662057T73 33.2k, 1%R97 0662057P22 22.1k, 1%R98 0662057A80 20kR99 0662057P12 10.5k, 1%R100 0662057Z35 11.5k, 1%R101 0662057P12 10.5k, 1%R102 0662057Z35 11.5k, 1%R103 0662057T79 3.01k, 1%R104 0662057Y03 78.7, 1%R105 0662057P52 2.43k, 1%R106 0662057P73 13.7k, 1% SWITCH: S1 4080564C02 Dip switch MODULE: See Note.U1 thru U2 5113805A84 Multiplexer, 4:1U3 5113819A05 Op-amp, quadU4 5113805A13 OR gate, quadU5 5113805A22 XOR gate, quadU6 5185130C93 Regulator, 5V switchU7 5105109Z13 Regulator, 9.6VU8 5185368C03 A/D converterU9 5113805A13 OR gate, quadU10 5199249A01 Silicon serial numberU11 thru U13 5113805A84 Multiplexer, 4:1U14 5113816A53 Regulator, 5V linearU15 5113819A05 Op-amp, quadU16 5113805A27 NAND Schmitt triggerU17 thru U19 5113805A84 Multiplexer, 4:1U20 5113819A05 Op-amp, quadU22 5113819A05 Op-amp, quad DIODE: See Note.VR1 4813833B02 SchottkyVR6 4813830A15 Zener, 5.6VVR8 thru VR14 4813830A71 Zener, 15V dualVR15 Not PlacedVR16 thru VR17 4813830A71 Zener, 15V dualVR18 Not PlacedVR19 thru VR24 4813830A71 Zener, 15V dualVR25 thru VR34 Not PlacedVR36 thru VR43 Not Placed RECEPTACLE: W1 0984345R01 Receptacle, SMB coax NOTE:For optimum performance, order replacement diodes, transistors, and circuit modules by Motorola part number only. Electrical Parts List : Backplane Circuit Board Reference Motorola Part Number Description
68P81093C75-A 11-9
11-10 68P81093C75-A Figure 20. PDR 3500 Backplane Circuit Board Detail (Sheet 1 of 2) 142318078797742318078797777787980123480797877432177797880132431J7 J8J5J2J6P85755585657555856575558565755585657555856
68P81093C75-A 11-11 Figure 20. PDR 3500 Backplane Circuit Board Detail (Sheet 2 of 2) 1S1-8S1-7S1-6LOW VDCW14114VININ8721342180797877J211278J2212910 J20211211 13P5 P915P11GND14VPA14VU22U9U4U5U17U18D3U19L14J9U16U8U10U2U1U11U13U3U15S1U12C50C51BLKBLUREDWHTD2 U7U6C12C49C8C48VR1L1C6C4GDSPINSQ1-Q5SC1C2C3C5C7C9C10C11C13C14C15C16C17C18C19C21C22C23C24C25C26C27C28C29C30C31C32C33C34C35C36C37C38C39C40C41C42C43C44C45C46C47C52C53C54C55C56C57C58C59C60C61C62C63C64C65C66C67C68C69C70C71C72C73C74C75C76C77C78C79C80C81C83C84C85C86C87C88C89C90C91C92C93C94C95C96C97C98C99C100C101C102C103C104C105C106C107C108C109C110C111C112C113D124262325L2L3L4L5L6L7L8L9L10L11 L12L13M1M2M3M4M5M6M7M8M9M10M11M12M13M14M15 M16M17M18M19 M20M21M22M23M24M25P1P2P3 P4P6P7P10GDQ1GSDQ2GSDQ3GSDQ4GSDQ5GSDQ6R1R2R3R4R5R6R7R8R9R10R11R12R13R14R16R17R18R19R20R21R22R24R25R26R27 R28R29R30R31R32R33R34R35R36R37R38R39R40R41R42R43R44R45R46R47R48R49R50R51R52R53R54R55R56R57R58R59R60R61R62R63R64R65R66R67R68R69R70R71 R72R73R74R75R76R77R78R79R80R81R82R83R84R85R86R87R88R89R90R91R92R93R94R95R96R97R98R99R100R101R102R103R104R105R106891689167814U378147814U5171510 1120781489168916U128916U1478147814891689168916U197814U207814VR6VR8VR9VR10VR11VR12VR13VR14VR15VR16VR17VR18VR19VR20 VR21VR22VR23VR24VR25VR26VR27VR28VR29VR30VR31 VR32VR33VR34VR36VR37VR38VR39VR40VR41VR42VR43
11-12 68P81093C75-A 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 8 Duplexer and duplexer cover0385865C02 Screw, 8-32 x .312 4 Power supply0400002645 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 10705725D01 Bracket, 800 MHz receiver 1 P2073B only0785688C01 Bracket, receiver 10785689C01 Bracket, exciter 11585693C01 Cover, duplexer 12785687C01 Chassis 12800048250 Adapter, right angle UHF 2 On TX and RX port2885630D01 Plug, chassis 1 Antenna relay connector on top panel2885828C01 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 26500817956 Fuse, 5A 250V 27505658W01 Thermal pad, PA 17582200H01 Pad, gray 67582200H14 Pad, black 87585798C01 Feet, rubber 4
4 Motorola8000 West Sunrise BoulevardFort Lauderdale, Florida 33322 68P81093C75-A

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