Motorola Solutions 92FT5809 PDR3500 Transportable Repeater User Manual 93C75 O PRINTCover
Motorola Solutions, Inc. PDR3500 Transportable Repeater 93C75 O PRINTCover
Users Manual
| Download: |  |
| Mirror Download [FCC.gov] | |
| Document ID | 224451 |
| Application ID | eTOgfLtye9msJuZg2FANxg== |
| Document Description | Users Manual |
| Short Term Confidential | No |
| Permanent Confidential | No |
| Supercede | No |
| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 292.66kB (3658210 bits) |
| Date Submitted | 2002-02-04 00:00:00 |
| Date Available | 2002-03-25 00:00:00 |
| Creation Date | 2001-10-08 14:57:10 |
| Producing Software | Acrobat Distiller 4.0 for Macintosh |
| Document Lastmod | 2002-02-04 15:42:39 |
| Document Title | 93C75-O_PRINTCover |
| Document Creator | FrameMaker 5.5 PowerPC: AdobePS 8.5.1 |
| Document Author: | 8500 |
PDR 3500 Transportable Repeater Basic Service Manual Table of Contents 1 - Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Manual Revisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Computer Software Copyrights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replacement Parts Ordering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Parts Ordering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Motorola Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Parts Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related Documents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1-1 1-1 1-1 1-1 1-1 1-2 1-2 1-2 1-2 2 - Safety and General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Important Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . RF Operational Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Exposure to Radio Frequency Energy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electromagnetic Interference/Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 2-1 2-1 2-1 2-2 3 - Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Compact Mechanical Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . State-of-the-Art Electrical Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Transmitter Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Receiver Circuitry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Station Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Wireline Circuitry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Switching Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Optional Hardware Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3-1 3-1 3-1 3-1 3-1 3-1 3-2 3-2 3-2 3-2 4 - System Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Local Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . External Duplexer Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Repeater RA or Cross Band Repeater Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 4-1 4-1 4-1 5 - Models and Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 Model Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 Maintenance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 6 - Approved Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 A, Motorola, ASTRO, ASTRO CAI, and SECURENET are trademarks of Motorola, Inc. © 2000, 2001 Motorola Commercial, Government, Industrial Solutions Sector 8000 W. Sunrise Blvd., Fort Lauderdale, FL 33322 All Rights Reserved. Printed in U. S. A. 2/2001. 68P81093C75-A 7 - Setup and Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1 Programming with RSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1 Connecting PC to PDR 3500 RSS Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1 Using the RSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2 Status Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2 Hardware Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2 Channel Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4 Alignment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6 Electrical Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9 Power Supply Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9 RF Cabling Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10 Separate RX and TX Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10 Duplexer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10 8 - Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1 Summary of Switches, Pushbuttons, and Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1 Summary of LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1 9 - Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1 Troubleshooting Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1 Recommended Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1 Test Equipment List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1 Troubleshooting Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1 Troubleshooting Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2 Procedure 1: Routine Maintenance Functional Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2 Procedure 2: Troubleshooting A Reported/Suspected Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2 How to Use These Troubleshooting Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2 Interpreting LED Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-6 Interpreting Alarm Alert Tones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-9 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-9 Verifying Transmitter Circuitry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-10 Required Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-10 Verifying Transmitter Circuitry Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-10 Verifying Receiver Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-14 Required Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-14 Verifying Receiver Circuitry Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-15 Verifying Receiver Circuitry (Digital-Capable Stations) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-20 Required Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-21 Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-22 Module Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-24 Module Replacement Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-25 General Replacement Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-25 Anti-Static Precaution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-25 Care of Gold-Plated Connector Contacts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-25 Power Down Station Before Removing/Inserting Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-26 Validating Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-26 Module Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-26 Station Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-26 Physical Replacement of the Station Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-26 After Installing the New Station Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-27 Wireline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-28 Physical Replacement of the Wireline Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-28 ii 68P81093C75-A After Installing the New Wireline Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ASTRO Modem Card/V.24 Interface Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Physical Replacement of the Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . After Installing the New Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Physical Replacement of the Receiver Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . After Installing the New Receiver Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Exciter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Frequency Band Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Physical Replacement of the Exciter Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . After Installing the New Exciter Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Intermediate Power Amplifier (800 MHz Stations only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Physical Replacement of the IPA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . After Installing the New IPA Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Frequency Band Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Physical Replacement of the Power Amplifier. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . After Installing the New Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Physical Replacement of the Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Before Installing the New Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Physical Replacement of the Backplane. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . After Installing the New Backplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preselector Field Tuning Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Required Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VHF Tuning Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Calculating Proper Alignment Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preparing Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VHF Tuning Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . UHF Tuning Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Calculating Proper Alignment Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preparing Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tuning Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-28 9-29 9-29 9-29 9-29 9-29 9-30 9-30 9-30 9-30 9-31 9-31 9-31 9-32 9-32 9-32 9-33 9-34 9-34 9-34 9-35 9-35 9-35 9-37 9-37 9-37 9-38 9-38 9-39 9-40 9-41 9-41 9-42 9-43 10 - Functional Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Transmitter Circuitry Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Exciter Module Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Intermediate Power Amplifier Module Operation (800 MHz stations only) . . . . . . . . . . . . . . . . . . . . . . . . Power Amplifier Module Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Receiver Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Receiver Module Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Station Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Station Control Module Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Wireline Interface Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Wireline Interface Board Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power Supply Module Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1 10-1 10-1 10-1 10-2 10-2 10-2 10-2 10-2 10-3 10-3 10-3 10-4 10-4 10-4 10-5 11 - Block Diagram, Schematics, Electrical Parts List, Circuit Board Detail, and Chassis Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1 68P81093C75-A iii List of Tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Table 11. Table 12. Model Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 Specifications, continued . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3 RSS Settings for PA Power Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3 UHF R3/R4 Output Power Translation Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5 Alignment Power by Frequency Band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7 Switches, Pushbuttons, and Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1 Summary of LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1 Switches, Pushbuttons, and LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2 PDR 3500 LED Indicator Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-6 Motherboard DIP Switch Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-35 List of Figures Figure 1. EIA-232 Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1 Figure 2. Switches, Pushbuttons, Connectors, and LED Indicators for PDR 3500 . . . . . . . . . . . . . . . . . . . . . . . . . 8-2 Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 18. Figure 19. Figure 19. Figure 20. Figure 20. PDR 3500 Troubleshooting Overview (Procedure 1: Routine Maintenance). . . . . . . . . . . . . . . . . . . . . . 9-3 PDR 3500 Troubleshooting Overview (Procedure 2: Reported or Suspected Problem) . . . . . . . . . . . . . 9-4 PDR 3500 LED Indicators and Front Panel Buttons and Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-8 Test Equipment Setup for Verifying Transmitter Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11 Test Equipment Setup for Verifying Receiver Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-16 A—Coupled receiver connection (Top). B—Coupled duplexer connection (Bottom) . . . . . . . . . . . . . 9-18 Disabling the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-19 Interconnect Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-23 Chassis Ground Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-24 Module Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-24 Test Equipment Setup for Preselector Field Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-40 Location of Tuning Screws and Cavity Probe Holes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-41 Test Equipment Setup for Preselector Field Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-43 Location of Tuning Screws and Cavity Probe Holes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-44 PDR 3500 Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3 PDR 3500 Schematic—Part I (Sheet 1 of 2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-4 PDR 3500 Schematic—Part I (Sheet 2 of 2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-5 PDR 3500 Schematic—Part II (Sheet 1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-6 PDR 3500 Schematic—Part II (Sheet 2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-7 PDR 3500 Backplane Circuit Board Detail (Sheet 1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-9 PDR 3500 Backplane Circuit Board Detail (Sheet 2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-10 Parts Lists Electrical Parts List: Backplane Circuit Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-8 Mechanical Parts List: PLN1681A Main Chassis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-12 iv 68P81093C75-A Foreword 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. 68P81093C75-A 1-1 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 847-538-8023 1-800-826-1913, or 410-712-6200 (Federal Government) TELEX: 280127 FAX: 1-847-538-8198 FAX: 1-410-712-4991 (Federal Government) Domestic (U. S. A.) after hours or weekends: 1-800-925-4357 International: 1-847-538-8023 Motorola Parts Accessories and Aftermarket Division (United States and Canada) Attention: Order Processing 1313 E. Algonquin Road Schaumburg, IL 60196 Accessories and Aftermarket Division Attention: International Order Processing 1313 E. Algonquin Road Schaumburg, 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) 1-2 68P81093C75-A Safety and General Information 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) C95.11999 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) 68P81093C75-A 2-1 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. 2-2 68P81093C75-A Introduction 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. 68P81093C75-A 3-1 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. 3-2 68P81093C75-A System Applications 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. Doubleshielded 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 2 Wireline A Wireline A Wireline B Wireline B NOTE: RJ-45 cables for cross band operation are 1 to 1. 68P81093C75-A 4-1 Notes 4-2 68P81093C75-A 5 Models and Specifications Model Chart Table 1. Model Structure Model Description P2066B P2067B P2068B P2069B P2070B P2071B P2072B P2073A Kit PLD1177_ PLD1178_ PLD1179_ PLD1180_ PLE1254_ PLE1255_ PLE1256_ PLE1257_ PLE1258_ PLE1259_ PLE1260_ PLE1261_ PLE1262_ PLE1263_ PLN1682_ PLN1681_ PLN7776_ PLN7777_ PPN6026_ PLD7981_ PLE9367_ PLE9380_ PLE9381_ PLF7695_ PLF7696_ PFD6060_ PFE6060A PFF4011_ PAN6003A PDR7778A PBN6048A VHF Range 1 (132-154 MHz) VHF Range 2 (150-174 MHz) UHF Range 1 (403-433 MHz) UHF Range 2 (450-470 MHz) UHF Range 3 (470-482 MHz) UHF Range 4 (494-512 MHz) UHF Range 3.5 (482-494 MHz) 800 MHz Description Receiver VHF R1 Exciter VHF R1 Receiver VHF R2 Exciter VHF R2 Receiver UHF R1 Exciter UHF R1 Receiver UHF R2 Exciter UHF R2 Receiver UHF R3 Exciter UHF R3 Receiver UHF R4 Exciter UHF R4 Receiver 800 MHz Exciter 800 MHz Board, Control Chassis, main Case, portable Board, backplane Power supply PA, VHF PA, UHF R1 PA, UHF R3 PA, UHF R4 PA, 800 MHz Intermediate PA, 800 MHz Duplexer, VHF Duplexer, UHF Duplexer, 800 MHz Antenna, mag mount Label Packing x = Indicates one of each is required. 68P81093C75-A 5-1 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. 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 3. Specifications GENERAL VHF UHF 800 MHz Standard model numbers P2066B, P2067B P2068B, P2069B, P2070B, P2071B, P2072B P2073A Channel spacing 12.5, 25, 30 kHz 12.5, 25 kHz 12.5, 25 kHz Stability 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, DPL Number of modes TRANSMITTER VHF UHF 800 MHz RF power (without duplexer) 30 watts 30 watts, 25 watts for P2071B 22 watts RF power (with duplexer) 20 watts 20 watts, 17 watts for P2071B 15 watts Maximum transmit duty cycle 50% 50% 50% TX spurs/harmonics -60 dB -60 dB -60 dB FM noise (EIA) -45 dB nominal -45 dB nominal -45 dB nominal Audio response per EIA per EIA per EIA TX distortion (1 kHz, clear audio) <5% <5% <5% RECEIVER VHF UHF 800 MHz Sensitivity (20 dBQ) 0.35 µV 0.5 µV 0.40 µV Sensitivity (12 dB SINAD) 0.25 µV 0.35 µV 0.30 µV Selectivity (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 dB Spurious and image 80 dB 80 dB 80 dB Note: Specifications are subject to change without notice. 5 -2 68P81093C75-A Table 4. Specifications, continued DUPLEXER Repeat frequency spread, TX/TX: 300 kHz VHF minimum duplexer T-R separation 132-174 MHz: 3 MHz UHF minimum duplexer T-R separation 403-512 MHz: 3 MHz 800 MHz duplexer T-R separation: 45 MHz POWER SOURCE AC power voltage range: 80-265 Vac AC power frequency input: 49-61 Hz External DC power: 11-16 Vdc CURRENT DRAIN High power repeat: 10.0 A Standby: 2.0 A DIMENSIONS Size (English): 20.00 x 15 x 7.75 inches Size (metric): 508 x 381 x 197 mm WEIGHT Weight (English): 46 lbs with duplexer 43 lbs without duplexer Weight (metric): 20.9 kg with duplexer 19.5 kg without duplexer Note: Specifications are subject to change without notice. 68P81093C75-A 5-3 Notes 5-4 68P81093C75-A Approved Accessories 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 68P81093C75-A 6-1 Notes 6-2 68P81093C75-A 7 Setup and Connections 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 EIA232 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. Connects to COM Port on PC 9-Pin D-Type EIA-232 Female 9-Pin D-Type EIA-232 Male TXD TXD RXD RXD RTS RTS CTS CTS GND GND Connects to RSS Port on Top Panel MAEPF-27075-O Figure 1. EIA-232 Wiring Diagram 68P81093C75-A 7-1 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. 7-2 68P81093C75-A 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 lowpower UHF R3 or R4 Quantar, so the high-power profiles are used for those ranges. 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 Watts UHF R3 (5-30 W) 110 Watts UHF R4 (5-25 W) 100 Watts 800 MHz (5-22 W) 20 Watts 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). 68P81093C75-A 7-3 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. 7-4 68P81093C75-A Table 6. UHF R3/R4 Output Power Translation Table Station lower limit UHF R4 alignment power UHF R4 upper limit UHF R3 alignment power UHF R3 upper limit 68P81093C75-A Actual Power (W) RSS Power UHF R3 (W) RSS Power UHF R4 (W) 20 20 24 24.5 28 29 32 33.5 36 38 10 40 42.5 11 44 47 12 48 51.5 13 52 56 14 56 60.5 15 60 65 16 64 69.5 17 68 74 18 72 78.5 19 76 83 20 80 87.5 21 84 92 22 88 96.5 22.8 100 23 92 101 24 96 105.5 25 100 110 26 104 27 108 27.5 110 28 112 29 116 30 120 7-5 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 7-6 68P81093C75-A 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. Table 7. Alignment Power by Frequency Band Frequency Band Rated Power Alignment Power VHF R1, VHF R2 30 W 25 W UHF R1, UHF R2 30 W 25 W UHF 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 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 68P81093C75-A 7-7 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. 7-8 68P81093C75-A 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 Connection Each PDR 3500 is shipped with an eight foot, 3-conductor line cord. Attach the receptacle end of the cord to the AC input plug located on the station top panel. Plug the 3-prong plug into a 110 V or 220 V AC grounded outlet. NOTE: The Power Supply module automatically selects between 110 V and 220 V. • DC Input Power Connection An 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. 68P81093C75-A 7-9 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. • Duplexer Using 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. 7-10 68P81093C75-A 8 Operation 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. Table 8. Switches, Pushbuttons, and Connectors Top Panel Wireline connectors Transmit UHF connector RSS port connector Receive UHF connector DC connector Antenna relay connector AC connector Momentary PTT/Reset switch 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 9. Summary of LED Indicators Top Panel Power/Transmit LED Station Control Module Station On Station Fail Intcm/Acc D Control Ch Rx 1 Active Rx2 Active Rx Fail Aux LED 68P81093C75-A 8-1 Duplexer Antenna Relay Connector (3-pin) Wireline Connections (RJ-45) Antenna Receive UHF Jack Transmit UHF Jack MAEPF-27065-O Figure 2. Switches, Pushbuttons, Connectors, and LED Indicators for PDR 3500 Table 10. Switches, Pushbuttons, and LED Indicators Item 8-2 Name Purpose 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). DC Connector External DC source (+12 Vdc to +14 Vdc) AC Connector and Fuses AC Inlet (110/220 Vac, 3 A) Power/Transmit LED The function of this LED indicator is described in the Troubleshooting section of this manual. 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. 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. 68P81093C75-A Troubleshooting 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 (50Ω, station wattage or higher) • Handset/Microphone with PTT switch (TMN6164, or equivalent) Troubleshooting Procedures 68P81093C75-A 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. 9-1 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 chart Step 3. Once the faulty module has been identified, proceed to Module Replacement Procedures, beginning on page 9-25. 9-2 68P81093C75-A ROUTINE MAINTENANCE VISIT PROCEDURE 1 OBSERVE LED INDICATORS and MONITOR ALARM TONES (PAGES 6 AND 9) • OBSERVE LED INDICATORS ON STATION MODULE FRONT PANELS • MONITOR ALARM ALERT TONES FROM EXTERNAL SPEAKER MODULE SUSPECTED OF BEING FAULTY? YES GO TO TROUBLESHOOTING PROCEDURE 2 FLOW CHART NO INTERPRET STATUS REPORT (RSS USER’S GUIDE–68P81085E35) • USING RSS, ACCESS THE STATUS REPORT SCREEN AND LOOK AT HISTORY OF ALARMS AND TIME STAMPS MODULE SUSPECTED OF BEING FAULTY? YES GO TO TROUBLESHOOTING PROCEDURE 2 FLOW CHART NO RUN STATION DIAGNOSTICS (RSS USER’S GUIDE–68P81085E35) • USING RSS, RUN DIAGNOSTICS ON STATION MODULES MODULE SUSPECTED OF BEING FAULTY? YES GO TO TROUBLESHOOTING PROCEDURE 2 FLOW CHART NO DONE Figure 3. PDR 3500 Troubleshooting Overview (Procedure 1: Routine Maintenance) 68P81093C75-A 9-3 PROBLEM REPORTED OR SUSPECTED PROCEDURE 2 OBSERVE LED INDICATORS and MONITOR ALARM TONES (PAGES 6 AND 9) • OBSERVE LED INDICATORS ON STATION MODULE FRONT PANELS • MONITOR ALARM ALERT TONES FROM EXTERNAL SPEAKER LED PATTERN INDICATES STATION IN SOFTWARE DOWNLOAD MODE? YES USING RSS, ACCESS THE STATUS REPORT SCREEN. ANALYZE MESSAGES TO DETERMINE IF MODULE FAILURE HAS OCCURRED. NO MODULE SUSPECTED OF BEING FAULTY? NO USING RSS, DOWNLOAD STATION SOFTWARE TO FLASH MEMORY ON STATION CONTROL BOARD YES MODULE SUSPECTED OF BEING FAULTY? YES GO TO MODULE REPLACEMENT PROCEDURES ON page 9-25 NO RUN STATION DIAGNOSTICS (RSS USER’S GUIDE–68P81085E35) • USING RSS, ACCESS DIAGNOSTICS SCREEN, RUN DIAGNOSTICS, AND INTERPRET RESULTS MODULE SUSPECTED OF BEING FAULTY? YES GO TO MODULE REPLACEMENT PROCEDURES ON page 9-25 NO GO TO Figure 4. PDR 3500 Troubleshooting Overview (Procedure 2: Reported or Suspected Problem) 9-4 68P81093C75-A A PROCEDURE 2 (CONTINUED) CHECK CODE PLUG PROGRAMMING (RSS USER’S GUIDE – 68P81085E35) • USING RSS, READ THE STATION CODE PLUG AND VERIFY THAT PROGRAMMING IS CORRECT (COMPARE TO CODE PLUG FILE ON PC FOR PARTICULAR STATION) • RE-PROGRAM STATION CODE PLUG BY DOWNLOADING CODE CUSTOMER DATA FROM CODE PLUG FILE FOR PLUG NO PARTICULAR STATION (RSS GUIDE – 68P81085E35) PROGRAMMING CORRECT? • IF PROBLEM STILL EXISTS, PROCEED TO INTERPRET STATUS REPORT YES INTERPRET STATUS REPORT (RSS USER’S GUIDE–68P81085E35) • USING RSS, ACCESS THE STATUS REPORT SCREEN AND LOOK AT HISTORY OF ALARMS AND TIME STAMPS MODULE SUSPECTED OF BEING FAULTY? YES GO TO MODULE REPLACEMENT PROCEDURES ON page 9-25 NO RUN TRANSMITTER AND RECEIVER TESTS: • PERFORM VERIFYING TRANSMITTER CIRCUITRY TESTS (Page 10) TO ISOLATE PROBLEM TO TRANSMITER CIRCUITRY • PERFORM VERIFYING RECEIVER CIRCUITRY TESTS (Page 14) TO ISOLATE PROBLEM TO RECEIVER CIRCUITRY REPLACE FAULTY MODULE AS DESCRIBED IN MODULE RELACEMENT PROCEDURES BEGINNING ON page 9-25 Figure 4. PDR 3500 Troubleshooting Overview (Procedure 2: Reported or Suspected Problem) (Continued) 68P81093C75-A 9-5 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 Tx Lock – GREEN when Exciter synthesizer is locked; module fully functional. – OFF when: synthesizer is out of lock or +5V, +14.2V, or both are absent PA 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 or for previous key EXCITER MODULE 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 are disabled) – OFF when PA output power is either at expected level, or at specific cutback levels (any level other than shutdown); LED status is latched, thereby indicating status during current key, or for previous key. TOP PANEL 9-6 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 Table 11. PDR 3500 LED Indicator Functions (Continued) LED Location STATION CONTROL MODULE (SCM) LED Name Status Definition STATION ON – GREEN when SCM fully functional – FLASHING when front panel switch press detected – OFF for SCM failure Station 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 mode Control 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 received Carrier signal level is above threshold set in codeplug Squelch criteria met (carrier, PL, DPL,ASTRO, secure, etc.) (Note that squelch criteria can be manually altered via RSS for testing purposes) – OFF when above conditions are not met for Receiver #1 Rx 2 Active – Unused in PDR 3500 Rx 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 during diagnostics run at time of power-up, or during normal operation WIRELINE INTERFACE BOARD (WIB) Aux LED – GREEN LED available for special application function All LEDs Flashing 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 Module WL On – GREEN when WIB fully functional – OFF for WIB failure Both 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. 68P81093C75-A 9-7 STATION CONTROL MODULE (Front Panel - Cover Plate Removed) Handset Speaker RSS Port Intercom/Shift CSQ/PL/Off Vol Down/ Access Disable Vol Up/Local PTT Station On Station Fail Intrem/AccD Control Ch Rx 1 Active Rx 2 Active Rx Fail Aux LED TOP PANEL OF STATION PWR/Tx PTT/Reset Switch WL On WL Fail WIRELINE INTERFACE MODULE (Front Panel) Tx Lock PA Full PA Low PA Fail EXCITER MODULE (Front Panel) MAEPF-27030-O Figure 5. PDR 3500 LED Indicators and Front Panel Buttons and Connectors 9-8 68P81093C75-A 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. Example 1: Single Alarm (#3) beep...beep....beep .................................................................................................[repeats] Alarm #3 10 Second Window Example 2: Multiple Alarms (#1 and #4) beep... ........................beep....beep ... beep ....beep................................................[repeats] 2 seconds Alarm #1 Alarm #4 10 Second Window The alarm tone definitions are as follows: Number of Beeps 68P81093C75-A Alarm Condition Name Battery Revert PA Fail Synthesizer Overvoltage Alarm Condition Description 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. Alarm is reported when PA fails to keyup to full ouput power. Alarm is cleared upon successful keyup to full power. Alarm is reported when either Tx or Rx synthesizers fail to lock. Alarm is cleared when both sythesizers lock. Should not occur in PDR 3500. 9-9 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 board In general, the transmitter circuitry is exercised by injecting and measuring signals using a Motorola R2001 Communications Analyzer (or equivalent). Measured values outside the acceptable range indicate a faulty module; values within range verify proper operation of the above listed modules and circuitry. Required Test Equipment The following test equipment is required to perform the procedure: • Motorola R2001 Communications Analyzer (or equivalent) • Telephone-style handset with PTT switch (TMN6164, or equivalent) • In-line Wattmeter (Motorola Model S-1350, or equivalent) • Dummy Load (50Ω, station wattage or higher) Verifying Transmitter Circuitry Procedure Step 1. Connect test equipment by performing Step 1 through 3 shown in Figure 6. Step 2. Connect handset to RJ-11 connector on SCM front panel, as shown. The cover plate over the SCM side of the chassis must be removed to access this connector. Handset PTT Button MEPF-27031-O 9-10 68P81093C75-A 2 To Antenna In-line Wattmeter Duplexer or Antenna Relay Antenna Port If duplexer or antenna relay is used, connect N-to-N cable from antenna port to in-line wattmeter, otherwise connect UHF-to-N cable from top panel transmit jack to in-line wattmeter. Connect wattmeter to dummy load. Disconnect cable from antenna port of duplexer or antenna relaly. If duplexer or relay not used, disconnect cable from top panel transmit output port. Dummy Load Antenna Motorola R2001 Communications Analyzer COMMUNICATIONS SYSTEM ANALYZER OSCILLOSCOPE Connect antenna to R2001 antenna input. Be sure to pull RF Port Select Knob out to select antenna rf input. MONITOR RF SECTION RF Port Select Knob (Pull Out) MAEPF-27032-O Figure 6. Test Equipment Setup for Verifying Transmitter Circuitry 68P81093C75-A 9-11 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 backplane Step 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 9-12 68P81093C75-A If 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 backplane Step 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 Module Step 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 Module Step 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. 68P81093C75-A 9-13 • If the proper display is not obtained, suspect faulty SCM or Exciter Module Step 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 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 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) 9-14 68P81093C75-A IMPORTANT! Verifying Receiver Circuitry Procedure 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. 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 signal Step 3. Set R2001 to generate a 0.5 µV (-13 dBm) FM signal at the PDR 3500 receiver frequency, modulated by a 1 kHz tone at 3 kHz deviation. The 1 kHz tone should be audible through the handset (or external speaker). If no audio is heard, suspect the following: • Faulty Station Control Module (2.1 MHz reference) • Faulty Receiver Module • Faulty antenna-to-Receiver preselector RF cable • Faulty R2001-to-station RF cable • Duplexer/station receive frequency mismatch, or faulty duplexer 68P81093C75-A 9-15 1 Disconnect cables from top panel transmit and receive ports. PDR 3500 Top Panel Dummy Load To Antenna Connect UHF-to-N cable from station top panel receive port to R2001 RF in/out. Connect UHF-to-N cable from top panel transmit port to dummy load. Motorola R2001 Communications Analyzer COMMUNICATIONS SYSTEM ANALYZER OSCILLOSCOPE MONITOR RF SECTION RF In/Out Connect handset to RJ-11 jack on front panel of Station Control Module (or External Speaker to RJ-11 jack). Handset PTT Button MAEPF-27033-O Figure 7. Test Equipment Setup for Verifying Receiver Circuitry Step 4. If audio is heard, connect the HANDSET RJ-11 jack to the Oscilloscope input BNC connector, as shown below. COMMUNICATIONS SYSTEM ANALYZER OSCILLOSCOPE MONITOR RF SECTION To Station Receive Connector Oscilloscope Input Station Control Module Front Panel RJ-11 to BNC Test Cable Motorola Part No. 01-82069W01 (Available from Motorola WASPD) Volume Up Button MAEPF-27034-O 9-16 68P81093C75-A Step 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 cable NOTE: 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.) 68P81093C75-A 9-17 COMMUNICATIONS SYSTEM ANALYZER PDR 3500 Top Panel MONITOR OSCILLOSCOPE RF SECTION Duplexer RF Output RX Motorola R2001 Communications Analyzer TX Capacitive Coupler (Isolated T) Dummy Load MAEPF-27035-O COMMUNICATIONS SYSTEM ANALYZER PDR 3500 Top Panel MONITOR OSCILLOSCOPE RF SECTION Duplexer RF Output RX Motorola R2001 Communications Analyzer TX Capacitive Coupler (Isolated T) Dummy Load MAEPF-27036-O Figure 8. A —Coupled receiver connection (Top). B—Coupled duplexer connection (Bottom) Step 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. 9-18 68P81093C75-A Station Control Module Press and hold Shift Button. Press Vol Down/ Access Disable Intcm/Acc D LED should Flash yellow. Exciter Module PA Full LED should NOT illuminate. MAEPF-27037-O Figure 9. Disabling the Transmitter Step 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 dB If the difference is greater, suspect the following: • Duplexer receive and transmit ports are reversed • Loose or damaged cables between the duplexer and the station 68P81093C75-A 9-19 • 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 (DigitalCapable Stations) 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 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 9-20 68P81093C75-A • 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 overthe-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 cable Step 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) 68P81093C75-A 9-21 • 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. 9-22 68P81093C75-A DC Power Supply AC Jack LED Switch Rx Motherboard J20 Terminal Tabs P10 P9 P5 RSS Tx Fan Fan Receiver Exciter VHF, UHF 800 MHz IPA PA MAEPF-27080-O Figure 10. Interconnect Diagram Reference From Top panel UHF Top panel AC connector Power supply terminals POS, NEG Top panel DC connector Top panel DB-9 connector Top panel LED/Switch Chassis cooling fans Backplane terminals RED, BLK Backplane connector P10 PA mini-UHF Exciter mini-UHF Exciter mini-UHF IPA output SMB 68P81093C75-A To Description Receiver mini-UHF Power supply terminals H, N, GND Backplane terminals WHT, BLK Receive RF coaxial cable 120/240 VAC to power supply 14 VDC from power supply Backplane terminals BLU, BLK Backplane connector J20 Backplane Molex P5/P9 Backplane 3-pin Molex P5 PA 14 VDC input 14 VDC input to station RSS interface ribbon cable assembly LED/Switch assembly Cooling fan assembly 14 VDC to PA PA Top panel UHF PA IPA input SMB PA Control/feedback ribbon cable Transmit RF coaxial cable RF drive coaxial cable (VHF, UHF) RF drive coaxial cable (800 MHz) Final RF drive coaxial cable (800 MHz) 9-23 AC Inlet (Viewed from Underside) Power Supply Output Input Neg Pos H N Gnd BROWN ORANGE Nuts Lock Washers GRN/YEL Ring Lugs GRN/YEL Chassis Ground Stud MAEPF-27099-O Figure 11. Chassis Ground Wiring Diagram Module Locations Refer to Figure 12 for the locations of modules within the station chassis. Duplexer Station Control Module Power Amplifier (PA) Module AC Power Supply (inside chassis) Backplane Wireline Module Receiver Module (800 MHz version shown) Exciter Module Intermediate Power Amplifier (IPA) Module (800 MHz stations only) MAEPF-27030-O Figure 12. Module Locations 9-24 68P81093C75-A Module 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 Information 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. Anti-Static Precaution The station circuitry contains many C-MOS and other staticsensitive 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. CAUTION: DO NOT insert or remove station modules with power applied. This may result in damage to the modules. • Do not insert or remove modules with power applied. Always turn off the station by unplugging the AC and DC cords from the top panel before inserting or removing modules. • All spare modules should be kept in a conductive bag for storage and transporting. When shipping modules to the repair depot, always pack them in conductive material. Care of Gold-Plated Connector Contacts The connectors between the modules and the station backplane board are made with gold-plated card edge connector contacts to provide maximum reliability. Gold-plated materials do not form a non-conductive oxide layer and therefore should not require cleaning under normal conditions. When the modules have been subjected to many extraction/insertion cycles, or if the station is operated in a dusty environment, the contacts may require cleaning. Do not use an eraser or any type of abrasive substance to clean either the module card edge connectors or the backplane connector contacts. 68P81093C75-A 9-25 If the cleaning of gold-plated contacts is required, use a soft cloth dampened with alcohol to lightly wipe the contacts. Be sure not to touch the contact surfaces with your fingers; finger oils and salts can contaminate the contact surfaces. Power Down Station Before Removing/ Inserting Modules Before 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 Module A 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 Module 9-26 1. 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 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 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 Calibrate For Wireline-equipped stations only: • Tx Wireline • Rx Wireline 68P81093C75-A 9-27 For ASTRO stations only: • Simulcast/ASTRO Launch Time Offset For 6809 Trunking stations only: • TDATA Wireline Physical 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 jumpers 6. 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 9-28 68P81093C75-A ASTRO Modem Card/ V.24 Interface Card Physical 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. Receiver Physical 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.) 68P81093C75-A 9-29 8. 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 Calibrate Preselector 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. Exciter Frequency 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. 9-30 68P81093C75-A 4. Tilt the chassis up on its back edge; then, from the bottom of the chassis, remove the six Phillips screws holding the Exciter’s mounting plate. Slide the mounting plate out of the front of the chassis. 5. Pull out the old Exciter Module by gripping behind the miniUHF 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 cardedge 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 Modulation For ASTRO Simulcast systems only: • ASTRO/Simulcast Launch Time Offset Intermediate Power Amplifier (800 MHz Stations only) Physical Replacement of 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. 68P81093C75-A 9-31 5. 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 the New IPA Module Perform the following alignment procedures as described in the Setup and Connections section of this manual: • Power Output Power Amplifier Frequency Band Considerations When replacing the Power Amplifier, it is important to remember the frequency-sensitive nature of the Exciter/Power Amplifier combination. The Exciter and the PA must match according to the model breakdown table in this manual. If a PA with a new frequency band is being installed, the corresponding Exciter must be installed, as described in the Exciter subsection of “Module Replacement.” Of equal importance, the PDR 3500 motherboard contains circuitry which translates between the Exciter from the original Quantar and the PA from the Spectra™ mobile radio. Since the translations depend upon the frequency band of the Exciter and the PA, this circuitry is also frequency-sensitive. The DIP switches on the motherboard must be set according to the frequency of the station in order for the proper translation path to be selected. The DIP switch settings can remain intact if • The band of the new PA matches the one being replaced, and • The Exciter is not being changed. If the PA band or the Exciter band is being changed, the DIP switches must be configured to match the new frequency of the PA and Exciter. Detach the motherboard from the chassis and set the switches as described in the Backplane subsection of “Module Replacement.” 9-32 68P81093C75-A Physical Replacement of the Power Amplifier 1. Turn off the station’s power by unplugging the AC and DC power cords from the top panel. 2. Remove the eight Phillips screws from the edges of the station’s top panel and lift the chassis out of the case. 3. Remove the 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. 68P81093C75-A 9-33 10. 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 Output Power Supply Physical 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.” 9-34 68P81093C75-A Backplane Before 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. Table 12. Motherboard DIP Switch Settings Physical Replacement of the Backplane Station Model Exciter Band PA Model Switch 1 Switch 2 Switch 3 Switch 4 P2066 VHF R1 PLD7981 OFF OFF OFF OFF P2067 VHF R2 PLD7981 ON OFF OFF OFF P2068 UHF R1 PLE9367 OFF ON OFF OFF P2069 UHF R2 PLE9380 ON ON OFF OFF P2070/ P2072 UHF R3 PLE9380/ PLE9381 OFF OFF ON OFF P2071 UHF R4 PLE9381 ON OFF ON ON P2073 800 MHz PLF7695 OFF ON ON OFF 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. 68P81093C75-A 9-35 7. 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. 9-36 68P81093C75-A After Installing the New Backplane Perform the following alignment procedures as described in the Setup and Connections section of this manual: • Power Output Using 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! Required Test Equipment Tuning for best SINAD response DOES NOT result in optimum tuning of the preselector assembly. You must use this fieldtuning procedure to obtain optimum preselector performance. The following test equipment is required to properly tune the preselector assembly: • RF Signal Generator: Motorola R2600 Communications Analyzer, R2001 Communications Analyzer (see note), or HP8656A signal generator (or equivalent) • Dip/Peak Monitor: HP435B Power Meter (or equivalent) with HP8484A sensitive power head, Boonton Model 92E with BNC input, or R2001/R2600, using the spectrum analyzer function. • Torque Driver, capable of delivering 12 in. – lb. of torque, and 10 mm deep well socket. • Tuning probe: Motorola Part number 0180763D22, part of TRN7799A tuning kit. • Flat-blade screwdriver NOTE: 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. 68P81093C75-A 9-37 VHF Tuning Procedure Calculating Proper Alignment Frequency Use one of the following two methods to calculate the alignment frequency to be generated by the signal generator. For stations with a single receive frequency, calculate the frequency of the alignment signal as follows: Step 1. From the site documentation or the RSS, determine the station receive frequency. Step 2. If the frequency is ≤ 148 MHz (Range 1) or ≤ 156 MHz (Range 2), subtract 250 kHz. Otherwise, note the actual frequency. Example: If the station receive frequency is 134.575 MHz (Range 2), subtract 250 kHz, since the frequency is less than 143 MHz. 134.575 MHz - 250 MHz = 134.325 MHz Step 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. 9-38 68P81093C75-A Step 2. Calculate a midpoint frequency as follows: Fmid = (Fhighest + Flowest) ÷ 2 Step 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. 68P81093C75-A 9-39 From Signal Generator RX TX Preselector Assembly Tension Nut To RX Connector on Top Panel Tuning Screw To Receiver Board To Dip/Peak Monitor (RF Millivoltmeter or Power Meter) Tuning Probe MAEPF-27038-O Figure 13. Test Equipment Setup for Preselector Field Tuning VHF Tuning Procedure Step 1. Provide power to the PDR 3500 through either DC or AC (to provide the active 50 Ω termination). Step 2. Adjust the signal generator to the frequency calculated on page 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. 9-40 68P81093C75-A NOTE: The DIP will not be as sharp for screw 5 as it was for screws 2 through 4. Preselector Assembly TUNING SCREW 1 TUNING SCREW 2 TUNING SCREW 3 TUNING SCREW 4 H1 H2 To Station Receive Antenna Port To Receiver Board H3 H4 H5 TUNING SCREW 5 MAEPF-27039-O Figure 14. Location of Tuning Screws and Cavity Probe Holes UHF Tuning Procedure Calculating Proper Alignment Frequency Use one of the following two methods to calculate the alignment frequency to be generated by the signal generator. For stations with a single receive frequency, calculate the frequency of the alignment signal as follows: Step 1. From the site documentation, or the RSS, determine the station receive frequency. 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. 68P81093C75-A 9-41 Step 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) ÷ 2 Step 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. 9-42 68P81093C75-A Step 4. Using the torque driver and deep-well socket, loosen the three tension nuts on the adjustment screws. Step 5. De-tune the preselector as follows: Turn tuning screws 3 and 4 clockwise until they bottom out. Be careful not to apply more than 3 in. – lb. of torque to prevent warping the preselector cover and housing. Step 6. Connect the test equipment as shown in Figure 15. From Signal Generator RX TX Preselector Assembly To RX Connector on Top Panel Tension Nut To Receiver Board Tuning Screw To Dip/Peak Monitor (RF Millivoltmeter or Power Meter) Tuning Probe MAEPF-27040-O Figure 15. Test Equipment Setup for Preselector Field Tuning 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. 68P81093C75-A 9-43 Step 5. Keep the tuning probe in cavity “U2” and adjust tuning screw 3 for a DIP. Step 6. Tighten tension nut on tuning screw 3 to at least 12 in. – lb. and fine tune tuning screw 3 for a DIP. Step 7. Insert the tuning probe into cavity “U3” and decrease the output from the signal generator to -5 dBm. Step 8. Adjust tuning screw 4 for a DIP. Step 9. Tighten tension nut on tuning screw 4 to at least 12 in. – lb. and fine tune tuning screw 4 for a DIP. Preselector Assembly U2 TUNING SCREW 2 U3 To Station Receive Antenna Port To Receiver Board TUNING SCREW 3 U4 TUNING SCREW 4 MAEPF-27041-O Figure 16. Location of Tuning Screws and Cavity Probe Holes 9-44 68P81093C75-A Functional Theory of 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) Module These modules combine to produce the modulated, amplified RF signal. The RF signal is transmitted via the station transmit antenna. Exciter Module Operation The Exciter Module is a microprocessor-controlled module, generating a modulated RF signal at the desired transmit frequency. It sends this signal to the Power Amplifier for amplification 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. 68P81093C75-A 10-1 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, 50Ω 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 10-2 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 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) conversion This 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. 68P81093C75-A 10-3 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 signals Analog, 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. 10-4 68P81093C75-A Power Supply Module Operation The Power Supply Module is a switching-type power supply which accepts an AC input (85-265 VAC, 49-61 Hz) and generates the 13.8 Vdc for the station modules and the power regulation circuitry on the motherboard. The Power Supply Module is capable of 12 A continuous load and 18 A maximum load. 68P81093C75-A 10-5 Notes 10-6 68P81093C75-A Block Diagram, Schematics, Electrical Parts List, Circuit Board Detail, and Chassis Parts List 68P81093C75-A 11 11-1 11-2 68P81093C75-A Receive Antenna WIRELINE INTERFACE BOARD Wireline Audio From Landline To Station RF Input/Output (Top Panel) Wireline Audio From Station To Landline 4 - Wire Audio Circuit RECEIVER MODULE Address 1st Mixer Preselector Filter 3-Pole (UHF) 5-Pole (VHF) 7-Pole (800/900) SPI Bus To/From Station Control Module 21.45 MHz (VHF) 73.35 MHz (UHF and 800 MHz) Bandpass Filtering Synthesizer/ VCO ASTRO Modem Custom Receiver IC Differential Data (2nd Injection, Amplification, A/D Conversion) Peripheral ASIC DSP ASIC Interface 2.1 MHz Ref Data Address Address Data Data HDLC Bus HDLC Bus Host Microprocessor Data Memory STATION CONTROL MODULE RSS Terminal (Laptop Typical) Microprocessor Host ASIC Digital Signal Processor (DSP) Data Address SPI Bus To/From Station Modules DSP ASIC TDM Bus Audio Interface Bus External Speaker Handset Audio Interface Circuitry Memory RSS Host Interface POWER SUPPLY MODULE AC Input (Top Panel) Switching Circuitry +13.8 V VCO & Ref Mod Audio Memory 2.1 MHz Ref 2.1 MHz Ref 2.1 MHz Ref 2.1 MHz Ref 2.1 MHz Reference Oscillator VCO & Ref Mod Audio DC Input (Top Panel) Backplane Translation Circuitry +9.6 V Regulator Circuitry EXCITER MODULE SW +5 V POWER AMPLIFIER MODULE LN +5 V PA Key SPI Bus To/From Station Control Module Transmit Antenna TX Forward Power Detect Power Control Circuitry Backplane Translation Circuitry Microprocessor TX Enable Amplifier VCO & Ref Mod Audio 2.1 MHz Ref Coupler VHF, UHF Synthesizer/ VCO Modulated RF RF Switch Circuitry +13 DBM 800 MHz MAEPF-27042-A IPA +13 DBM +21 DBM Figure 17. PDR 3500 Functional Block Diagram 68P81093C75-A 11-3 A+ LN+5 SPICLK LN+5 LN+5 S1 S1 SPIMOSI C85 SW1 R1 R63 22.1K 1% 3.01K SPIMISO LN+5 R42 R43 R74 R3 20K 20K 20K 5.62K 1% 13 R64 10K 1% 32.4K 14V MOD FAIL UHF R3 UHF R4 800 MHZ FAN ALARM 22.1K 1% HS TEMP BAT TEMP AC FAIL AN0 AN1 SCLK AN2 DIN U8 AN3 DOUT AN4 CS* AN5 VREF AN6 VAG AN7 AN10 AN8 9.6V R62 UHF R2 EOC AN9 18 U9 15 13 11 10K LN+5 P10 VTEMP_FROM_PA P10 VFWD_FROM_PA 10K U16 3.9K C109 A2 1% 10.5K 1% J9 10K R104 R51 C67 15K 100pF 39pF R77 R80 2.49K 1% 1% 5.62K R82 1% 5.62K C110 U22 R102 R101 220nH 11.5K X0 14 LN+5 R105 MC33074 C60 33.2K R81 1% 22.6K R83 1% 27.4K 1% 100pF 11 Y0 R44 10K 12 10.5K 1% A+ P3 P4 P4 C69 100pF MC33074 U19 P6 EXTERNAL DC - R16 15K 100pF 100pF Y3 10K 1% SW1 SW2 C99 470pF C38 C39 0.1uF 470pF SW3INV C100 470pF C98 C41 X0 100pF A+ 14 470pF VCC 12 R18 X1 L13 13 VFWD_FROM_PA 220nH P8 100pF ANTRYKREYEDA+ 11 P9 LED_RED P9 PTT_SWITCH P9 5.62K 20K 1% Y2 Y3 13 IPA R98 P11 4 RESET_SWITCH 10 Y1 R32 P11 2 P9 LN+5 LED_GREEN Y0 10 MC33074 P9 MC74HC4052 ANTENNA RELAY U12 X3 U15 ENABLE* VEE P5 31 P8 X2 10K 1% GND P5 J9 FAN 15 C68 P5 R33 PTT_REQ_INV 22.6K SW3 1% C95 P11 1 VFWD_XLATED 10K 1% R39 10 20K 16 P7 R38 MC33074 10K P7 U20 Y1 R79 LN+5 R17 PA POWER MC33074 C102 P6 13 EXTERNAL DC + D3 U20 10 MC74HC4052 10K 1% 2.21K 1% Y2 13 14 R45 R85 10K 1% LN+5 R31 470pF X3 R84 R41 X1 A+ POWER SUPPLY - MC33074 C97 X2 1% U15 100pF 16.2K 1% C101 2.43K 20K C103 15 R78 10.5K 1% 12 1% 100pF D2 14 12 R40 0.1uF 1% L2 U20 13 C96 POWER SUPPLY + P3 LN+5 1% 11.5K 1% MC33074 39pF 13.7K 73 VCONTROL 10 39pF R106 R52 C59 78.7 20K C58 LN+5 20K R50 U15 C57 MC33074 R99 10 S1 LN+5 P2 LED_RED 10K A1-CS2 3.01K 100pF R100 470pF 13 MC74HC132AD MC74HC132AD C106 P2 U16 U22 R88 Q6 R61 R9 MC74HC86 R103 12 11 R60 100 A0-CS1 13 R14 10 MC74HC32A Q4 P10 LED_GREEN 12 11 A+ PTT_REQ_INV U4 P10 100 MC74HC32A 100pF Q2 U5 1K C113 MC33074 R59 A3 MC74HC86 10 C83 P1 LN+5 Q5 P1 U4 Q1 39pF R6 MC74HC32A BAT V A4 FAN ON MC74HC32A 15pF 9.6V P10 LN+5 1% U15 Q3 C56 U5 14 12 39pF MC74HC86 17 16 11.5K 10 MC74HC32A U4 19 R5 C55 U5 16 UHF R1 R4 9.6V VCC LN+5 U4 VEE 15pF ENABLE* VHF R2 15pF VHF R1 15pF GND 470pF 0.1uF 28V RIPPLE BAND C54 28V LN+5 C53 1% SETTINGS FOR S1 C52 MC74HC86 C2 20 12 R2 VDD U5 C1 A5 LN+5 LN+5 11 SW3INV S1 VSS SW3 LN+5 39pF 1% SW2 470pF C42 C45 470pF 470pF Control 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 Equations Range VHF R1 & R2 UHF R1 & R2 UHF R3 UHF R4 800 MHz DIP Settings 000x/100x 010x/110x 001x 101x 011x Equation Vo = 1.95 • Vi - 2.5 Vo = 0.8 • Vi - 0.6 Vo = 0.93 • Vi - 0.6 Vo = 0.8 • Vi - 0.6 Vo = 0.83 • Vi - 0.6 Figure 18. PDR 3500 Schematic—Part I (Sheet 1 of 2) 11-4 68P81093C75-A These op-amps are part of the forward voltage translation. They subtract 0.6V from the forward voltage and serve as buffers. 11 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. 12 Temperature Voltage Translation: U13, U18, U3, and peripheral circuitry translate the Temperature Voltage (V temp) 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: 10 LN+5 LN+5 20K DNP 470pF X1 R27 13 R25 R11 20K 32.4K 1% DNP 12 15 U17 MC74HC4052 X3 LN+5 LN+5 Y1 R12 10 C15 470pF 1% SW1 R65 20K DNP R53 LN+5 20K DNP Y2 Y3 C36 C37 470pF 470pF 12 R13 SW2 X0 5.62K 14 1% R73 R58 1.5K 1.5K 11 SW3 U2 X3 Y0 C25 R28 470pF 470pF 1K L7 Y3MUX 13 220nH 100pF L8 10 AMUXCTRL 220nH ENABLE* VEE 15K L9 BMUXCTRL 220nH Y3 GND Y2 C17 100pF Y1 R90 C16 MC74HC4052 C87 470pF C88 X1 X2 20K DNP R30 X3MUX 220nH 15 R29 470pF R71 L6 16 C86 R98 prevents the op-amp U15 pin 8 from railing high when not in use and impairing the proper function of U12. C14 0.1uF 16.2K VCC ENABLE* Y3 VEE GND Equation Vo = -0.55 • Vi + 3.05 Vo = -Vi + 5.12 Vo = -1.69 • Vi + 8.32 Vo = -0.67 • Vi + 3.97 U11 MC74HC4052 Y0 Y1 Y2 15K LN+5 11 10 R72 11 X2 X3 Y0 LN+5 15K 470pF A+ X2 11 R70 C35 0.1uF 13 X1 15 LN+5 X0 14 ENABLE* 14 C34 VCC 2.7K 1% VEE R67 15K 5.62K 1% 16 16 X0 R69 1K R10 33.2K C84 VCC 12 R93 R24 R26 0.1uF DNP 2.2K GND R66 18K R68 20K LN+5 C43 C18 C19 100pF 100pF 0.22uF SW3INV R91 1.5K L10 VFINALFORWARD 220nH VFWD_XLATED LN+5 C40 100pF LN+5 LN+5 C89 C90 0.1uF 470pF LN+5 R20 C46 C47 0.1uF 470pF C21 C22 0.1uF 470pF L3 PATEMP C91 SW1 R89 20K C93 470pF VCC 220nH SW2 10K 1% MC33074 C61 C62 470pF 470pF Y2 R75 Y3 C72 ENABLE* Y3 VEE L11 10 Y1 Y2 U3 10K 1% LN+5 C92 470pF 16 100pF LN+5 C64 0.22uF C24 100pF MC74HC4052 Y0 10 Y1 C23 U1 X3 100pF 10K 1% ENABLE* Y3 VEE MC33074 R46 C70 11 GND R36 10K 1% Y2 12 Y0 R47 10 14 16.2K 1% U13 MC74HC4052 X3 470pF Y1 LN+5 U3 X2 11 10.5K 1% MC74HC4052 Y0 13 470pF Y2MUX 220nH 15 X2 L5 13 X1 VTEMP_FROM_PA 15 GND 27.4K 1% R35 U18 X3 C44 MC33074 R22 11 X2MUX 14 13 X1 100pF X2 14 10 C71 15 R34 U3 X0 ENABLE* 12 L12 220nH 18.2K 1% 13 X1 X0 220nH VEE 14 12 GND 16.2K 1% L4 C63 100pF X0 10K 1% R19 VCC VCC 12 R21 16 16 220nH 13 LN+5 C79 R92 DIP Settings 000x/100x 010x/110x 001x/101x 011x LN+5 LN+5 LN+5 Temperature Voltage Translation Equations Range VHF R1 & R2 UHF R1 & R2 UHF R3 & R4 800 MHz LN+5 LN+5 C65 C66 100pF 100pF 100pF LN+5 LN+5 R48 R76 R37 10K 1% SW3INV R97 16.2K 1% C94 R96 1% R94 20K 1% 1% U3 C108 100pF 20K PTT_REQ_INV R55 20K C78 470pF 470pF 33.2K R54 10.5K 22.1K LN+5 27.4K 1% SW3 R49 12 PTT_REQ_EX MC33074 U16 MC74HC132AD R95 U16 PTT_REQ_SC PTT_SWITCH MC74HC132AD C80 C81 C107 100pF 100pF 1uF 18.2K 1% Figure 18. PDR 3500 Schematic—Part I (Sheet 2 of 2) 68P81093C75-A 11-5 A+ L14 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. A+ SW+5 A+ SW+5 A+ SW+5 J6 38 J5 22 J7 J8 J9 J2 23 J5 23 J7 J8 J9 J6 53 J2 24 J5 24 J7 J8 13 J9 J6 79 J2 25 J5 25 J7 J8 14 J9 J6 80 J2 26 J5 26 J7 J8 26 J9 J2 27 J5 27 J7 10 J8 27 J9 J2 28 J5 28 J7 11 J8 28 J9 10 J2 29 J5 29 J7 12 J8 29 J9 11 J2 30 J5 30 J7 13 J8 30 J9 12 J2 31 J5 31 J7 14 J8 31 J9 48 AMUXCTRL J2 32 J5 32 J7 15 J8 38 J9 49 BMUXCTRL J2 33 J5 33 J7 16 J8 45 J9 20 PATEMP J2 34 J5 34 J7 17 J8 46 J9 19 VFINALFORWARD J2 J5 J7 18 J8 47 J9 44 X2MUX J2 J5 J7 19 J8 48 J9 46 X3MUX J2 J5 J7 20 J8 55 J9 45 Y2MUX J2 J5 J7 21 J8 65 J9 47 Y3MUX J2 18 J5 18 J7 22 J8 66 J9 66 PTT_REQ_EX J2 19 J5 19 J7 49 J8 70 J9 J2 20 J5 20 J7 J8 71 J9 J2 21 J5 21 J7 J8 72 J9 13 J2 35 J5 35 J7 J8 73 J9 14 J2 36 J5 36 J7 J8 75 J9 23 J2 59 J5 57 J7 23 J8 77 J9 24 J2 61 J5 59 J7 24 J8 79 J9 29 J2 63 J5 63 J7 51 J2 64 J5 64 J7 52 J2 67 J5 67 J7 53 J2 22 SW+5 PTT_REQ_SC M9 M16 M17 M18 M19 M20 J20 9 J21 LN+5 J22 J22 VR6 5.6V J2 68 J5 68 J7 54 J2 71 J5 71 J7 57 J2 72 J5 72 J7 58 J9 30 J8 76 J2 73 J5 73 J7 61 J2 79 J5 79 J7 62 J2 80 J5 80 J7 65 J9 40 W1 J8 78 COAX_GND J9 39 J9 41 J9 50 J9 51 J9 68 J8 80 J9 69 J8 58 J7 66 DATA U10 NC1 GND NC2 NC NC3 J9 71 J9 72 J7 72 J9 74 J7 73 J9 75 J7 79 J9 76 J7 80 J9 79 J9 80 Figure 19. PDR 3500 Schematic—Part II (Sheet 1 of 2) 11-6 68P81093C75-A LN+5 9.6V J2 43 HDLCCLK J8 53 J5 43 A0-CS1 J2 53 J8 52 J20 CTS1 J20 J7 31 VR10 J2 41 J8 69 VR12 J2 65 M21 RTS1 U9 SPARE#6 14 POWER U3 11 RX16.8MHZREF J2 52 HDLCDATA TXDATA- VR42 J5 65 C26 C27 0.1uF 470pF POWER U4 C28 C29 0.1uF 470pF MC74HC32A J5 52 J5 53 J7 41 J2 78 DATA*1 J2 54 J2 77 VR27 J5 54 J7 50 DATA1 J8 21 M22 DATAPTT-GCC J6 J21 M7 J22 J2 62 J8 22 DATARX-GCC J6 J21 J22 J6 RXAUDIO M5 M1 VR28 J7 47 J8 23 J8 50 RXD1 VR22 LINE1- J20 A3 VR29 J2 60 J8 54 DCD1 J22 LINE2+ VR13 J20 VR11 J7 46 J2 A4 J5 J21 EXTSPARE#1 J5 39 J2 69 J7 27 J5 69 J9 54 J7 63 SPIGRANT J8 19 RXMUTE-GCC J22 J5 58 J5 14 J7 45 J2 15 J2 56 J2 16 J5 56 J5 16 J7 44 J2 J2 74 AGC1 J5 J2 J7 74 J8 57 ASYNC+ VR8 J20 7 J8 56 ASYNC- J20 2 J8 61 AUXCARRIER VR9 J6 48 EXTPTT+ M4 M8 J8 20 J21 VR26 J21 J8 64 M23 J2 75 POWER U9 J5 J2 EXTSPARE#3 M11 MC74HC32A 9.6V J9 15 J5 37 J9 16 J7 25 J9 17 J9 52 J9 18 SPIMOSI J7 48 J2 38 J9 65 14 POWER U15 11 C73 C74 0.1uF 470pF POWER U16 C75 C76 0.1uF 470pF POWER U20 11 C104 C105 0.1uF 470pF XMITSPIREQ 9.6V J5 38 SEIZERELSEGC LN+5 POWER U22 11 J7 26 SPARE#1 VR39 J7 35 J7 34 C111 C112 0.1uF 470pF U20 C50 U14 TDMCLOCK J2 46 J5 46 VR33 J7 59 J2 J9 77 VR32 J2 48 PTT 10 MC33074 C51 330UF 330UF J5 J2 40 REFAUDIO VR30 SPARE#2 M12 59 MC33074 C10 0.27uF L14 IN VSW C9 330UF SHDN* 470pF C8 330UF TSTAT-RXCAIE J5 40 GND R87 J7 28 MC33074 VC C12 330UF J9 55 J8 49 M6 RSSI-GCC J8 63 TX16.8MHZREF C11 J7 38 J8 51 J5 51 SCHOTTKY MBRS330T3 J20 A+ TXD1 VR16 C3 SPARE#5 470pF J8 67 TXDATA+_TXAIO C4 10uF IN J7 39 OUT U7 LT1129C0 SHDN* GND VR34 M25 100p J7 56 J9 70 J2 51 RSTAT-PAHINH VR15 330UF 1500pF C77 RESET_SWITCH J5 50 J9 60 HDLCBUSY J5 66 C49 9.6V VR14 EXTSPARE#9 J5 42 J7 30 J2 50 RINGINDICATOR J20 8 J8 24 J5 13 J2 42 VR40 SPARE#4 C13 470pF VR1 J9 58 EXTSPARE#7 12 4.7UH SENSE TAB 13 14 U6 LT1374 4.7UH C48 U22 L1 BOOST J7 32 J8 J5 49 EXTSPARE#6 DNP 20K TDMFRAMESYNC J5 44 SPARE#3 10 R86 J7 33 J2 44 U22 D1 A+ J5 45 J9 57 J2 49 RESET SW+5 TDMDATA J2 45 J7 36 VR31 EXTSPARE#5 J2 10 ODC1 J5 48 J5 J2 13 VR20 470pF VCONTROL J2 37 J5 47 J7 75 J8 60 J5 12 VR19 C33 0.1uF LN+5 A+ 17 J2 47 MUTE-PLSTRIP EXTSPARE#4 J2 12 RDSTAT+ C32 VR38 J9 56 J5 11 RDSTAT- CCI-MONITOR SBI1 EXTSPARE#12 VR18 J6 52 470pF MC78M05ACDT EXTSPARE#2 J2 11 J6 35 RXPLDET J7 76 J8 MONDET-GCC EXTSPARE#8 J21 C31 9.6V J9 78 J9 53 J8 62 C30 0.1uF VR17 EXTPTT- J2 76 VR24 EXTSPARE#11 J5 10 J6 39 LINEPTTDTGCC POWER U5 J7 37 VR25 J22 J21 J8 16 J5 15 A5 M14 M10 12 13 VCOAUDIO J7 60 SPIMISO M15 LINE2- EXTSPARE#10 J2 14 14 VR23 J8 25 J2 58 14 MC74HC32A 11 TXWIDEBANDAIO J6 LN+5 U9 VR43 J9 59 M3 VR37 J5 60 LN+5 SPICLK LINE1+ R57 DATATX-GCC TXPLINHITGCC J2 39 J7 43 J5 62 10 J8 15 J9 62 VR36 J5 17 J7 40 J8 68 R56 A2 J2 17 HST_REQ J9 67 J7 77 M2 J7 42 VR21 J7 29 J7 78 A1-CS2 U9 J7 55 J5 41 ADJ 16.2K 1% TAB C5 470pF VR41 J9 61 R8 R7 10.5K 1% C6 10uF C7 470pF M13 M24 Figure 19. PDR 3500 Schematic—Part II (Sheet 2 of 2) 68P81093C75-A 11-7 Electrical Parts List: Backplane Circuit Board Reference C1 C2 thru C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 C16 thru C19 C21 C22 C23 thru c24 C25 C26 C27 C28 C29 C30 C31 C32 C33 C34 C35 thru C37 C38 C39 C40 thru C41 C42 C43 C44 thru C45 C46 C47 C48 thru C51 C52 thru C54 C55 thru C59 C60 C61 thru C62 C63 C64 C65 thru C72 C73 C74 C75 C76 C77 C78 C79 C80 thru C81 C83 C84 C85 C86 thru C88 11-8 Motorola Part Number 2113741B69 2113740F67 2311049A19 2113740F67 2311049A19 2113740F67 2313748R01 2113740F67 2113743B22 2113741F29 2313748R01 2113740F67 2113741B69 2113740F67 2113741F01 2113741B69 2113740F67 2113741F01 2113740F67 2113741B69 2113740F67 2113741B69 2113740F67 2113741B69 2113740F67 2113741B69 2113740F67 2113741B69 2113740F67 2113741B69 2113740F67 2113741F01 2113740F67 2113741D28 2113740F67 2113741B69 2113740F67 2313748R01 2113740F31 2113740F41 2113741F01 2113740F67 2113741F01 2113741D28 2113741F01 2113741B69 2113740F67 2113741B69 2113740F67 2113741F01 2113740F67 2113741B69 2113741F01 2113740F31 2113740F67 2113740F41 2113740F67 Description CAPACITOR, Fixed: pF±5%; 50V Unless otherwise stated 0.1 uF 470 10 uF, 25V 470 10 uF, 25V 470 330 uF, 16V, 20% 470 0.27 uF, 16V 1500 330 uF, 16V, 20% 470 0.1 uF 470 100 0.1 uF 470 100 470 0.1 uF 470 0.1 uF 470 0.1 uF 470 0.1 uF 470 0.1 uF 470 0.1 uF 470 100 470 0.22 uF 470 0.1 uF 470 330 uF, 16V, 20% 15 39 100 470 100 0.22 uF 100 0.1 uF 470 0.1 uF 470 100 470 0.1 uF 100 15 470 39 470 Electrical Parts List: Backplane Circuit Board Reference Motorola Part Number Description C89 C90 thru C95 C96 C97 thru C100 C101 thru C103 C104 C105 thru C106 C107 C108 thru C110 C111 C112 C113 2113741B69 2113740F67 2113741B69 2113740F67 2113741F01 2113741B69 2113740F67 2113928E01 2113741F01 2113741B69 2113740F67 2113741F01 0.1 uF 470 0.1 uF 470 100 0.1 uF 470 1 uF, 10V 100 0.1 uF 470 100 D1 D2 D3 4805129M76 4813833A12 4813832C77 DIODE: See Note. Silicon Silicon Zener, 24V J2 J5 thru J9 J20 J21 thru J22 0982407W01 0982407W01 2880007R05 0960113B01 JACK: Connector, 80-pin Connector, 80-pin Connector, 10-pin Connector, RJ-45 L1 L2 thru L13 L14 2485721C01 2462587T19 2485721C01 COIL, RF: Unless otherwise stated 4.7 uH 220 nH 4.7 uH P1 thru P4 P5 P6 thru P7 P8 P9 P10 P11 2985762C01 2884324M08 2985762C01 2882984N18 2884324M10 2885761C01 2884324M09 PLUG: Terminal, power Header, 3-pin Terminal, power Plug, 3-pin rt. angle Header, 5-pin Connector, 12-pin Header, 4-pin 4813821A47 4813823A13 TRANSISTOR: See Note. P MOSFET N MOSFET 0662057P22 0662057P10 0662057P66 0662057P22 0662057Z35 0662057A49 0662057P12 0662057Z25 0662057A73 0662057P66 0662057Y16 0662057Z25 0662057P66 RESISTOR, Fixed: W±5%; 1/8W unless otherwise stated 22.1k, 1% 10k, 1% 5.62k, 1% 22.1k, 1% 11.5k, 1% 1k 10.5k, 1% 16.2k, 1% 10k 5.62k, 1% 32.4k, 1% 16.2k, 1% 5.62k, 1% Q1 thru Q4 Q5 thru Q6 R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 68P81093C75-A Electrical Parts List: Backplane Circuit Board Reference R14 R16 R17 R18 R19 R20 R21 R22 R24 R25 thru R26 R27 R28 R29 R30 R31 R32 R33 R34 R35 R36 R37 R38 thru R39 R41 R42 thru R44 R45 R46 thru R48 R49 R50 R51 R52 R53 R54 thru R55 R56 thru R57 R58 R59 R60 R61 R62 R63 R64 R65 R66 R67 R68 R69 thru R70 R71 R72 R73 R74 R75 R76 R77 R78 R79 R80 R81 R82 R83 R84 thru R85 R86 Motorola Part Number 0662057A25 0662057A77 0662057A73 0662057P10 0662057P18 0662057P10 0662057Z25 0662057P12 0662057T73 0662057B47 0662057A49 0662057B47 0662057P12 0662057P66 0662057Z26 0662057P27 0662057Z25 0662057P10 0662057Z25 0662057P10 0662057P49 0662057A80 0662057A73 0662057P10 0662057P12 0662057A80 0662057A77 0662057A73 0662057A80 0662057B47 0662057A25 0662057A73 0662057A63 0662057A73 0662057T79 0662057Y16 0662057A57 0662057A59 0662057A79 0662057A77 0662057A53 0662057A77 0662057A53 0662057A80 0662057P10 0662057P27 0662057P53 0662057T73 0662057A80 0662057P66 0662057Z26 0662057P66 0662057P27 0662057P10 Description 100 15k 10k 10k, 1% 18,2k, 1% 10k, 1% 16.2k, 1% 10.5k, 1% 33.2k, 1% Not Placed 1k Not Placed 10.5k, 1% 5.62k, 1% 22.6k, 1% 27.4k, 1% 16.2k, 1% 10k, 1% 16.2k, 1% 10k, 1% 2.21k, 1% 20k 10k 10k, 1% 10.5k, 1% 20k 15k 10k Not Placed 20k Not Placed 100 10k 3.9k 10k 3.01k, 1% 32.4k, 1% Not Placed 2.2k 2.7k 18k 15k 1.5k 15k 1.5k 20k 10k, 1% 27.4k, 1% 2.49k, 1% 33.2k, 1% 20k 5.62k, 1% 22.6k, 1% 5.62k, 1% 27.4k, 1% 10k, 1% Not Placed Electrical Parts List: Backplane Circuit Board Reference Motorola Part Number Description R87 R88 thru R89 R90 R91 R92 R93 R94 R95 R96 R97 R98 R99 R100 R101 R102 R103 R104 R105 R106 0662057B47 0662057A80 0662057A77 0662057A53 0662057A49 0662057P20 0662057P18 0662057T73 0662057P22 0662057A80 0662057P12 0662057Z35 0662057P12 0662057Z35 0662057T79 0662057Y03 0662057P52 0662057P73 20k 15k 1.5k Not Placed 1k 20k, 1% 18,2k, 1% 33.2k, 1% 22.1k, 1% 20k 10.5k, 1% 11.5k, 1% 10.5k, 1% 11.5k, 1% 3.01k, 1% 78.7, 1% 2.43k, 1% 13.7k, 1% S1 4080564C02 SWITCH: Dip switch U1 thru U2 U3 U4 U5 U6 U7 U8 U9 U10 U11 thru U13 U14 U15 U16 U17 thru U19 U20 U22 5113805A84 5113819A05 5113805A13 5113805A22 5185130C93 5105109Z13 5185368C03 5113805A13 5199249A01 5113805A84 5113816A53 5113819A05 5113805A27 5113805A84 5113819A05 5113819A05 MODULE: See Note. Multiplexer, 4:1 Op-amp, quad OR gate, quad XOR gate, quad Regulator, 5V switch Regulator, 9.6V A/D converter OR gate, quad Silicon serial number Multiplexer, 4:1 Regulator, 5V linear Op-amp, quad NAND Schmitt trigger Multiplexer, 4:1 Op-amp, quad Op-amp, quad VR1 VR6 VR8 thru VR14 VR15 VR16 thru VR17 VR18 VR19 thru VR24 VR25 thru VR34 VR36 thru VR43 4813833B02 4813830A15 4813830A71 W1 0984345R01 4813830A71 4813830A71 DIODE: See Note. Schottky Zener, 5.6V Zener, 15V dual Not Placed Zener, 15V dual Not Placed Zener, 15V dual Not Placed Not Placed RECEPTACLE: Receptacle, SMB coax NOTE: For optimum performance, order replacement diodes, transistors, and circuit modules by Motorola part number only. 68P81093C75-A 11-9 80 78 79 77 56 58 55 57 J7 80 78 79 77 56 58 55 57 J8 P8 77 79 78 80 J5 57 55 58 56 77 79 78 80 57 55 58 56 77 79 78 80 J6 57 55 58 56 J2 Figure 20. PDR 3500 Backplane Circuit Board Detail (Sheet 1 of 2) 11-10 68P81093C75-A R66 VR36 24 26 23 25 R17 R16 U5 P10 D1 L13 R33 R87 C5 R8 R7 C96 C97 U19 C48 U7 C3 R79 C98 U19 R40 R41 U20 C103 14 C102 C104 C101 C105 U3 R85 D2 C4 C100 C99 BLU P3 BLK 14V IN GND P2 P4 U14 C50 P1 14V IN P7 R84 WHT D3 C51 P6 R14 LOW VDC C77 R86 C38 R32 R78 R83 R35 R77 R34 C70 C71 R80 R81 R19 R39 VR13 C7 16 R38 VR9 VR10 VR14 10 R48 C10 C9 C69 R98 C68 C74 C73 C40 C44 VR12 VR16 J20 R22 R20 C72 VR8 R37 R36 C108 U3 C8 C6 S1-8 R82 14 R49 R47 R46 R95 C49 VR1 C41 C45 C42 U12 R21 C11 R31 R45 C39 C46 L10 R26 R27 R11 R10 R96 C26 C27 S1 VR11 C28 C57 RED 12 11 PINS Q1-Q5 J9 S1-7 L1 PA 14V 3 P5 1 P9 Q2 Q1 R9 R61 U12 R97 R94 R42 C12 16 C95 C61 C30 U5 C56 C59 C31 14 C92 C94 R43 C32 C33 R60 Q5 G S C113 S1-6 R62 R6 C106 C107 U6 L14 R18 R68 R69 C87 C90 C89 C35 C34 R28 R30 R29 R53 R65 R93 R58 R92 R67 R73 R91 R71 R70 L8 C63 R89 R74 C65 L3 L12 C29 C76 C75 VR33 C55 U16 R55 C81 M22 79 77 C47 U13 C93 14 P11 80 78 U18 C58 Q4 G S R5 16 U4 R54 U15 C37 16 C66 VR28 C111 R101 14 VR31 VR27 C83 14 C36 C13 R44 C67 R51 C78 U9 R50 R52 R25 U11 C25 R106 U22 M4 VR39 C64 R76 C24 L11 L4 C85 R104 14 C112 VR15 VR32 VR26 VR43 M2 C14 R72 L5 14 C80 M8 VR34 C15 R13 R12 L7 C43 VR23 VR24 C2 C1 R63 R64 R2 R1 R75 R99 M10 M6 C86 S G Q6 C62 W1 M12 VR30 C21 U1 11 R100 R102 M11 L2 R24 16 C91 C54 U8 R103 VR40 U17 C19 16 C53 10 R105 M7 16 C60 C52 M25 M5 C22 M18 M16 M23 C84 L9 20 C110 C109 M24 R88 C79 C88 C18 M21 M17 VR38 M15 L6 C23 R4 R3 VR41 VR42 M19 M20 VR6 VR17 VR37 VR18 VR29 VR25 M13 M9 C17 U2 R57 M3 M14 16 R56 U10 M1 VR20 VR22 C16 VR21 J22 VR19 J21 R90 Q3 R59 Figure 20. PDR 3500 Backplane Circuit Board Detail (Sheet 2 of 2) 68P81093C75-A 11-11 Mechanical Parts List: PLN1681A Main Chassis Part Number 0200001355 0200835638 0200844628 0300139392 0300139800 0307644M09 0307644M12 0307644M28 0310907C83 0311995A17 0385865C01 0385865C02 0400002645 0400002646 0400007652 0400119331 0400490775 0407643M01 0485061D01 0705723V01 0705725D01 0785688C01 0785689C01 1585693C01 2785687C01 2800048250 2885630D01 2885828C01 3082933N02 3085697C01 3085698C01 3085699C01 3085700C01 3085701C01 3085702C01 3085702C02 3085703C01 3085703C02 3085703C03 3085703C04 3085703C05 3085703C06 3085786C01 3085786C02 4085732C01 4385800C01 4685799C01 5507519M04 5882273C01 5985731C01 6500817956 7505658W01 7582200H01 7582200H14 7585798C01 11-12 68P81093C75-A Description Nut, 8-32 hex Nut, elastic 4-40 Nut, elastic 6-32 Screw, 1/4-20 Screw, 6-32 x .5 Screw 10-32 x .75 Screw 10-32 x .375 Screw 4-40 x .437 Screw., M3 x .05 x 8 Screw, 6-32 x 1 Screw, 8-32 x .250 Screw, 8-32 x .312 Washer, lock #6 ext. Washer, lock #8 int Washer, lock #10 ext Washer, split lock Washer, flat #6 Washer, flat #10 Spacer Clip, PA Bracket, 800 MHz receiver Bracket, receiver Bracket, exciter Cover, duplexer Chassis Adapter, right angle UHF Plug, chassis AC Receptacle w/ fuse holder Line cord Coax cable, Exciter to PA Cable, ribbon RSS Cable, ribbon PA Cable, PA power Cable, DC power Coax cable, PA to top panel Coax cable, receiver to top panel Wire, brown Wire, orange Wire, green/yellow Wire, black Wire, white Wire, green/yellow Coax cable, Duplexer to RX port Coax cable, Duplexer to TX port Assembly, PTT/LED Standoff, hex Card guides Handles Adapter, N antenna Fan assembly Fuse, 5A 250V Thermal pad, PA Pad, gray Pad, black Feet, rubber Qty 20 Where Used Chassis ground stud AC receptacle and DC connector Fans Handle Preselector Chassis to case PA, backplane board, receiver and exciter brackets RSS connector, DC connector, AC receptacle Receiver bracket. Fans Duplexer and duplexer cover Power supply Preselector Ground stud Backplane board Handle Preselector Chassis to case Spacer for panel RF connectors P2073B only On TX and RX port Antenna relay connector on top panel PA to backplane board Power supply to AC receptacle Power supply to AC receptacle Chassis to AC inlet Power supply to backplane board Power supply to backplane board Chassis to power supply Preselector On duplexer Motorola 8000 West Sunrise Boulevard Fort Lauderdale, Florida 33322 68P81093C75-A
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File Type : PDF File Type Extension : pdf MIME Type : application/pdf PDF Version : 1.3 Linearized : No Create Date : 2001:10:08 14:57:10 Producer : Acrobat Distiller 4.0 for Macintosh Author : 8500 Creator : FrameMaker 5.5 PowerPC: AdobePS 8.5.1 Title : 93C75-O_PRINTCover Modify Date : 2002:02:04 15:42:39-05:00 Page Count : 94 Has XFA : NoEXIF Metadata provided by EXIF.tools