Motorola Solutions 92FT3800 PDR 3500 Portable Repeater User Manual 93C75 O Book

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Mirror Download [FCC.gov]
Document ID	119128
Application ID	OYziJtvQQNOw1o4o/3BpUw==
Document Description	Instruction Manual
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	64.97kB (812115 bits)
Date Submitted	2000-09-28 00:00:00
Date Available	2000-12-14 00:00:00
Creation Date	2000-09-27 15:15:27
Producing Software	Acrobat Distiller 3.01 for Power Macintosh
Document Lastmod	2000-09-27 15:32:26
Document Title	93C75-O_Book.book
Document Creator	FrameMaker 5.5
Document Author:	Motorola

PDR 3500
Portable Repeater
Basic Service Manual
Table of Contents
1 - Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
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
1-2
1-2
1-2
1-2
2 - Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safe and Efficient Operation of Motorola Two-way Radios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RF Operational Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exposure to Radio Frequency Energy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electromagnetic Interference/Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Facilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Aircraft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Medical Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operational Warnings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operational Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mobile Radio Operation and EME Exposure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Antenna Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-1
2-1
2-1
2-1
2-2
2-2
2-2
2-2
2-3
2-3
2-3
2-4
3 - Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
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
3-2
3-2
3-2
3-2
4 - System Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Local Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Two Antenna Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
External Duplexer Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repeater RA or Cross Band Repeater Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4-1
4-1
4-2
4-2
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 Motorola
Commercial, Government, Industrial Solutions Sector
8000 W. Sunrise Blvd., Fort Lauderdale, FL 33322
All Rights Reserved. Printed in U. S. A. 8/2000.
7 - Setup and Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Programming with RSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting PC to
PDR 3500 RSS Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the RSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hardware Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Channel Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supply Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RF Cabling Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Separate RX and TX Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Duplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7-1
7-1
7-1
7-2
7-2
7-2
7-4
7-5
7-5
7-5
7-5
7-6
7-6
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-10
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-10
Verifying Transmitter Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11
Required Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11
Verifying Transmitter Circuitry Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11
Verifying Receiver Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-15
Required Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-15
Verifying Receiver Circuitry Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-16
Verifying Receiver Circuitry (Digital-Capable Stations) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-21
Required Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-22
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-23
Module Replacement Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-25
General Replacement Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-25
Anti-Static Precaution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-25
Care of Gold-Plated Connector Contacts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-26
Power Down Station Before Removing/Inserting Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-26
Validating Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-26
Module Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-26
Station Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-27
Physical Replacement of the Station Control Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-27
After Installing the New Station Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-27
Wireline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-28
Physical Replacement of the Wireline Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-28
After Installing the New Wireline Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-29
ASTRO Modem Card/V.24 Interface Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-29
Physical Replacement of the Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-29
After Installing the New Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-29
Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-29
ii
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9-29
9-30
9-31
9-31
9-31
9-31
9-32
9-32
9-32
9-33
9-33
9-33
9-34
9-34
9-34
9-35
9-35
9-36
9-36
9-36
9-37
9-38
9-39
9-39
9-40
9-41
10 - Functional Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1
Transmitter Circuitry Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exciter Module Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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
10-2
10-2
10-2
10-2
10-3
10-3
10-3
10-3
10-3
10-3
10-4
11 - Block Diagram, Schematics, Electrical Parts List, and Circuit Board Detail11-1
iii
List of Tables
Table 1: Rated Power and Distance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Table 2: Model Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Table 3: Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Table 4: Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Table 5: Specifications, continued . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Table 6: Switches, Pushbuttons, and Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Table 7: Summary of LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
Table 8: Switches, Pushbuttons, and LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
Table 9: PDR 3500 Station LED Indicator Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-6
Table 10: Motherboard DIP Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-34
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. PDR 3500 Station Troubleshooting Overview (Procedure 1: Routine Maintenance). . . . . . . . . . . . . . . . . . . . 9-3
Figure 4. PDR 3500 Station Troubleshooting Overview
(Procedure 2: Reported or Suspected Problem) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4
Figure 5. PDR 3500 LED Indicators and Front Panel Buttons and Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-9
Figure 6. Test Equipment Setup for Verifying Transmitter Circuitry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-12
Figure 7. Test Equipment Setup for Verifying Receiver Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-17
Figure 8A. Coupled receiver connection. (Top) B. Coupled duplexer connection. (Bottom) . . . . . . . . . . . . . . . . . . . . 9-19
Figure 9. Disabling the Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-20
Figure 10. Interconnect Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-24
Figure 11. Chassis Ground Wiring Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-25
Figure 12. Test Equipment Setup for Preselector Field Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-38
Figure 13. Location of Tuning Screws and Cavity Probe Holes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-39
Figure 14. Test Equipment Setup for Preselector Field Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-41
Figure 15. Location of Tuning Screws and Cavity Probe Holes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-42
Figure 16. PDR 3500 Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2
Figure 17. PDR 3500 Schematic Sheet 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3
Figure 18. PDR 3500 Schematic Sheet 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-4
Figure 19. PDR 3500 Backplane Circuit Board Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-6
iv
1
Foreword
General
The information contained in this manual supplement relates to all
PDR 3500 stations, 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 station, 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-O
September 27, 2000
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.): 1-800-422-420, 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
September 27, 2000
68P81093C75-O
Safety Information
General
This section contains important information on safe and efficient
operation. Read this information before using your radio.
Safe and Efficient
Operation of
Motorola Two-way
Radios
The information provided in this document supersedes the general
safety information contained in user guides published prior to July
2000. For information regarding radio use in a hazardous
atmosphere please refer to the Factory Mutual (FM) Approval
Manual Supplement or Instruction Card, which is included with
radio models that offer this capability.
RF Operational
Characteristics
Your radio 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 radio is designed to comply with the following
national and international standards and guidelines regarding
exposure of human beings to radio frequency electromagnetic
energy (EME):
• 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
68P81093C75-O
September 27, 2000
2-1
• Australian Communications Authority Radiocommunications
(Electromagnetic Radiation - Human Exposure) Standard 1999
(applicable to wireless phones only)
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.
Aircraft
When instructed to do so, turn off your radio when on board an
aircraft. Any use of a radio must be in accordance with applicable
regulations per airline crew instructions.
Medical Devices
• Pacemakers
The Health Industry Manufacturers Association recommends that a
minimum separation of 6 inches (15 cm) be maintained between a
handheld wireless radio and a pacemaker. These recommendations
are consistent with the independent research by, and
recommendations of, Wireless Technology Research.
Persons with pacemakers should:
• ALWAYS keep the radio more than 6 inches (15 cm) from their
pacemaker when the radio is turned ON.
• not carry the radio in the breast pocket.
• use the ear opposite the pacemaker to minimize the potential for
interference.
• turn the radio OFF immediately if you have any reason to
suspect that interference is taking place.
• Hearing Aids
Some digital wireless radios may interfere with some hearing aids.
In the event of such interference, you may want to
consult your hearing aid manufacturer to discuss alternatives.
• Other Medical Devices
If you use any other personal medical device, consult the
manufacturer of your device to determine if it is adequately shielded
from RF energy. Your physician may be able to assist you in
obtaining this information.
2-2
September 27, 2000
68P81093C75-O
Operational Warnings
• Vehicles with an air bag
WARNING: Do not place a portable radio in the area over an air bag or in the air bag deployment area. Air bags inflate with great force. If a portable radio is placed in the air bag deployment area and the air bag inflates, the radio may be
propelled with great force and cause serious injury to occupants of the vehicle.
• Potentially explosive atmospheres
WARNING: Turn off your radio prior to entering any area with a potentially explosive atmosphere, unless it is a radio type especially qualified for use in such areas as “Intrinsically
Safe” (for example, Factory Mutual, CSA, or UL Approved). Do not remove, install, or charge
batteries in such areas. Sparks in a potentially explosive atmosphere can cause an explosion or fire resulting in bodily injury or even death.
NOTE: The areas with potentially explosive atmospheres referred to above include fueling
areas such as below decks on boats, fuel or chemical transfer or storage facilities,
areas where the air contains chemicals or particles, such as grain, dust or metal
powders, and any other area where you would normally be advised to turn off your
vehicle engine. Areas with potentially explosive atmospheres are often but not
always posted.
• Blasting caps and areas
WARNING: To avoid possible interference with blasting operations, turn off your radio when
you are near electrical blasting caps, in a blasting area, or in areas posted: “Turn off two-way
radio.” Obey all signs and instructions.
Operational Cautions
• Damaged antennas
CAUTION: Do not use any portable radio that has a damaged antenna. If a damaged antenna
comes into contact with your skin, a minor burn can result.
• Batteries
CAUTION: All batteries can cause property damage and/or bodily injury such as burns if a
conductive material such as jewelry, keys, or beaded chains touch exposed terminals. The
conductive material may complete an electrical circuit (short circuit) and become quite hot.
Exercise care in handling any charged battery, particularly when placing it inside a pocket,
purse, or other container with metal objects.
Mobile Radio Operation
and EME Exposure
68P81093C75-O
To assure optimal radio performance and that human exposure to
radio frequency electromagnetic energy is within the guidelines
referenced earlier in this document, transmit only when people
outside the vehicle are at least the minimum distance away from a
properly installed, externally-mounted antenna.
September 27, 2000
2-3
The table below lists the minimum distance for several different
ranges of rated radio power.
Table 1: Rated Power and Distance
Rated Power of Vehicle-Installed
Mobile Two-Way Radio
Antenna Installation
Minimum Distance from
Transmitting Antenna
7 to 15 Watts
1 Foot (30.5 Centimeters)
16 to 50 Watts
2 Feet (61 Centimeters)
More than 50 Watts
3 Feet (91.5 Centimeters)
Mobile Antennas
Recommended mobile antenna installations are limited to metal
body vehicles at the center of the roof and center of the trunk
deck locations.
The antenna installation must additionally be in accordance with:
a. The requirements of the antenna manufacturer/supplier
b. Instructions in the Radio Installation Manual
Fixed Site Antennas
Mobile radio equipment is sometimes installed at a fixed location
and operated as a control station or as a fixed unit. In such cases 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.
• If the antenna is to be mounted on a building then it must be
mounted on the roof.
• 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.
2-4
September 27, 2000
68P81093C75-O
3
Introduction
General
The Motorola PDR 3500 Station provides conventional analog,
ASTRO™, ASTRO CAI™, and SECURENET™ capabilities in a
compact, software-controlled design. The station architecture and
microprocessor-controlled Station Control Module allow for fast
and reliable upgrading. FLASH memory in the Station Control
Module allows software updates to be performed locally (using
serial port), or remotely via modem.
Compact Mechanical
Design
The entire unit is housed in a lockable rugged, black aluminum
extruded case weighing approximately 4l lbs. Internal components
are mounted in a custom, removable chassis, designed to fit a 19"
rack.
State-of-the-Art
Electrical Design
Transmitter Circuitry
The station transmitter circuitry is designed for 50% duty cycle
operation at full rated power. Output power is continuously
monitored by an internal calibrated wattmeter. The wattmeter output
feeds a power control loop, continually adjusting and maintaining
the desired output power. All adjustments are electronic, including
deviation and output power.
Receiver Circuitry
The station receive circuitry features multiple bandwidth capability
(12.5, 25, or 30 kHz, depending on band), as well as ASTRO digital
operation. Injection signals for the 1st and 2nd local mixers are
generated by frequency synthesizer circuitry and are electronically
controlled by the Station Control Module. All receive signals
(analog, SECURENET, ASTRO, and ASTRO CAI) are detected and
digitized before being sent to the Station Control Module; this
provides improved audio quality, consistent throughout the coverage
area.
Station Control Module
The Station Control Module is microprocessor-based and features
extensive use of ASIC and digital signal processing technology. The
module serves as the main controller for the station, providing signal
processing and operational control for the station modules.
68P81093C75-O
September 27, 2000
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
September 27, 2000
68P81093C75-O
4
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.
Two Antenna
Operation
The PDR 3500 Portable Digital Repeater may be operated with the
internal duplexer, using a single antenna. The duplexer provides the
necessary electrical isolation between the transmitter and the
receiver frequencies for repeater operation. The same isolation can
be obtained by physically separating transmit and receive antennas
either horizontally or vertically. The repeater requires approximately
50 dB isolation between the transmit and receive antennas for proper
operation.
Horizontal Antenna Separation:
VHF Band
UHF Band
800 MHz Band
275 feet
75 feet
40 feet
The Isolation values shown are for dipole antennas. If gain antennas
are used, additional separation is required. For example, if both
receive and transmit antennas have 3dB gain each, an additional
6 dB isolation is required. At UHF frequencies, an additional 75 feet
separation is required.
Vertical Antenna Separation
(tip of one antenna to the base of the other):
VHF Band
UHF Band
800 MHz Band
68P81093C75-O
September 27, 2000
23 feet
9.5 feet
4 feet
4-1
Gain antennas do not effect the transmit-to-receive antenna
separation required. Gain antennas are longer than unity gain
antennas.Therefore additional tower height will be required to
maintain the tip-to-base separation.
The antenna isolation distances shown above are based upon ideal
conditions. The antenna-to-antenna coupling is affected by nearby
objects that may result in increased separation required for proper
operation.The antenna coax cable must be a double-shielded type to
minimize cable-to-cable coupling. If RG58 style cables have to be
used, keep the cables as far apart as possible to minimize cable
coupling.
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.
4-2
Repeater 1
Repeater 2
Wireline A
Wireline A
Wireline B
Wireline B
September 27, 2000
68P81093C75-O
Models and Specifications
Model Chart
Table 2: Model Structure
Model
Description
P2066A
132-154 MHz
P2067A
150-174 MHz
P2068A
403-433 MHz
P2069A
438-470 MHz
P2070A
470-494 MHz
P2071A
494-512 MHz
Kit
Description
PLD1177_
Receiver VHF R1
PLD1178_
Exciter VHF R2
PLD1179_
Receiver VHF R2
PLD1180_
Exciter VHF R2
PLE1254
Receiver UHF R1
PLE1255
Exciter UHF R1
PLE1256
Receiver UHF R2
PLE1257
Exciter UHF R2
PLE1258
Receiver UHF R3
PLE1259
Exciter UHF R3
PLE1260
Receiver UHF R4
PLE1261
Exciter UHF R4
PLN1682_
Board, Control
PLN1681_
Chassis, main
PLN7776_
Case, portable
PLN7777_
Board, backplane
PPN6026_
Power supply
PLD7981_
PA, VHF
PLE9367_
PA, UHF R1
PLE9369_
PA, UHF R3
PLE9372_
PA, UHF R4
PFD6060_
Duplexer, VHF
PFE6060A
Duplexer, UHF
PAN6003A
Antenna, mag mount
PDR7778A
Label
PBN6048A
Packing
x = Indicates one of each is required.
68P81093C75-O
September 27, 2000
5-1
Table 3: Options
OPTION DESIGNATOR
DESCRIPTION
PURPOSE
Q245AL
Add: Duplexer, VHF
Adds VHF duplexer. Requires customer frequency.
Q245AM
Add: Duplexer, UHF
Adds UHF duplexer. Requires customer frequency.
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 4: Specifications
GENERAL
VHF
UHF
Standard model numbers
P2066A, P2067A
P2068A, P2069A, P2070A, P2071A
Channel spacing
12.5, 25, 30 kHz
12.5, 25 kHz
Stability
0.0001%
0.0001%
Preselector bandwidth (3dB)
7 MHz
7 MHz
Squelch
Carrier, PL, DPL
Carrier, PL, DPL
Number of modes
TRANSMITTER
VHF
UHF
RF power (without duplexer)
30 watts
30 watts
RF power (with duplexer)
20 watts
20 watts
Maximum transmit duty cycle
50%
50%
TX spurs/harmonics
-60 dB
-60 dB
FM noise (EIA)
-45 dB nominal
-45 dB nominal
Audio response
per EIA
per EIA
TX distortion (1 kHz, clear audio)
<5%
<5%
RECEIVER
VHF
UHF
Sensitivity (20dBQ)
0.35 uV
0.5 uV
Sensitivity (12dB SINAD)
0.25 uV
0.35 uV
Selectivity (EIA SINAD)
85 dB (25/30 kHz)
85 dB (25 kHz)
75 dB (12.5 kHz)
75 dB (12.5 kHz)
Intermod (EIA SINAD)
80 dB (25/30 kHz)
75 dB (12.5 kHz)
75 dB
Spurious and image
80 dB
80 dB
Note: Specifications are subject to change without notice.
5 -2
September 27, 2000
68P81093C75-O
Table 5: Specifications, continued
DUPLEXER
Repeat frequency spread, TX/TX:
300 kHz
VHF minimum duplexer T-R separation 3 MHz:
132-174 MHz
UHF minimum duplexer T-R separation 3 MHz:
403-520 MHz
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:
1.9 A
DIMENSIONS
Size (English):
20.00 x 15 x 7.75 inches
Size (metric):
508 X 381 X 197 mm
WEIGHT
Weight (English):
41 lbs
Weight (metric):
18.6 kg
Note: Specifications are subject to change without notice.
68P81093C75-O
August 18, 2000
5-3
Notes
5-4
September 27, 2000
68P81093C75-O
Approved Accessories
General
The following accessories are recommended by Motorola for use
with the PDR 3500 Portable Repeater.
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:
68P81093C75-O
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
September 27, 2000
6-1
Notes
Running H/F 6-#
September 27, 2000
68P81093C75-O
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-O
September 27, 2000
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).
Hardware Configuration
From the Main Menu, press “F2-Service.” Press F2 again to arrive at
the Hardware Configuration Screen.
1. The first field to verify is the Hardware Platform field. The
PDR 3500 is designed using the Quantar profile; it will not
operate properly in any other mode.
2. The next field to verify is the System Type field. This field
should be set to “Conventional.” The PDR 3500 does not operate
as an ASTRO-TAC Receiver or DBS Base Station.
3. Next verify that the Rx Freq Band 1 and Tx Freq Band fields
list the correct ranges for receiver and transmitter.
NOTE: Rx Freq Band 2 should be set to “NONE.”
4. The PA Power Rating field should be set to 25W (low power),
and the Power Supply field should show “AC LOW.” The
PDR 3500 was designed using a Quantar low power station
profile. It will not operate properly using any other
configuration.
5. If the unit is equipped with a Wireline Card, verify that the
Wireline field under the options is set to 4-wire.
Once the Hardware Configuration Screen matches the installed
station hardware, press F8 to validate the configuration. A popup
message will notify the user of any errors in the configuration. For
a complete description of the Hardware Configuration fields,
please refer to the Quantar RSS User’s Guide (68P81085E35).
Alignment
From the Main Menu, press “F2-Service.” Now press “F3” to arrive
at the Alignment Menu. From this menu, the user may align the RF
Power Out, RSSI, Station Squelch, and BER.
For instructions on performing Rx or Tx Wireline Alignment, please
refer to the Quantar RSS User’s Guide (68P81085E35).
NOTE: Before performing any alignment procedures, first
dekey the station and “Access Disable” the repeater
as shown in step 1 below.
7-2
September 27, 2000
68P81093C75-O
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 to a received signal. To deactivate the Access
Disable function, press shift+F6.
2. RSSI Calibrate:
1. In the Alignment Menu Screen, tab over to the RSSI
Calibrate field, and press F2 to perform the alignment.
2. Using an R2670 or equivalent Communications System
Analyzer, connect the RF out from the Analyzer to the Rx
UHF-type connector on the station top panel.
3. Set the RF output level from the Analyzer to –90 dBm with
no modulation, and set the frequency to PDR 3500 receive
frequency.
4. With the Analyzer RF turned on, make sure the value shown
in the RSS screen is –90 dBm. If it is not, type in “–90
dBm.”
5. Press F8 to save the calibration.
3. Power Out:
1. In the Alignment Menu Screen, tab over to the Tx Power
field and press F2 to perform the alignment.
2. For this procedure, connect the Tx UHF-type connector on
the station top panel to the RF input of either a Motorola
R-2670 Communications Analyzer, or to the input of an RF
power meter.
3. Press F6 to keyup the station, check the output power level
shown on the R2670 or RF power meter, and press F9 to
dekey the station.
4. Enter the power from the meter in the field shown in the
RSS, then hit F7 for the PDR 3500 to adjust the PA power
output level.
5. Once the unit adjusts the power, again keyup the station,
read the RF power from the meter, dekey the station, enter
the level in the RSS field, and hit F7 again to adjust.
6. Repeat this cycle until the power out is as close to 25 Watts
as possible. If the power output will not adjust properly, hit
F4 to initialize the PA and restart the alignment procedure.
68P81093C75-O
September 27, 2000
7-3
7. Once the power out is aligned, press F8 to save the settings
to the station codeplug.
4. Squelch:
1. From the Alignment Menu, tab over to the Squelch Adjust
field and press F2 to perform the alignment. The Squelch
control bar is shown in the center of the screen.
2. To open the squelch completely, press F2. To close the
squelch completely, press F4. To adjust the squelch
between fully open and fully closed, use the Pg Up/Pg Dn
keys on the PC.
3. Once the squelch is set, press F8 to save the setting to the
station codeplug.
5. ASTRO Bit Error Report:
1. From the Alignment Menu, tab over to the V.52 Rx BER and
RSSI Report, or PROJECT 25 Rx BER and RSSI Report.
2. Connect the R2670 Communications System Analyzer RF
“OUT” port to the Rx UHF-type connector on the station
top panel.
3. Set the generate frequency to the PDR 3500 receive
frequency, and the output level to –113 dBm, with
modulation either V.52 or Project 25 1011 Pattern
generation.
4. Press F2 to perform the alignment. The values for the report
will appear on the RSS screen.
Channel Information
From the Main Menu, press F4. Press F4 again to arrive at the
Channel Information Screen. From this screen, the user may
configure the TX/RX frequencies, RF power out, modulation type,
and the various channel traits for up to 16 channels.
1. In this screen, first set the Rx1 and Tx frequency to the proper
values.
NOTE: The Rx2 frequency is set to 0.00000 MHz and cannot
be edited. This is because the PDR 3500 does not
allow for 2 receivers. The station will automatically
calculate the Tx Idle Frequency to be the same as the
Tx Frequency.
In most applications, the Tx Idle Frequency should remain the same
as the Tx Frequency. However, in case of portable or mobile radios
unsquelching near the PDR 3500, adjust the Tx Idle frequency to Tx
Frequency -6.25 kHz.
2. Set the modulation type to either Analog, ASTRO, ASTRO CAI,
7-4
September 27, 2000
68P81093C75-O
Analog/ASTRO CAI, or CAI RX WIDE DEV.
3. Move to page 2 of the Channel Information Screen by pressing
the Pg Dn key. Set the Tx Power Out to the desired power level.
(The Battery Backup field has no effect on station operation
since there is no battery option for the PDR 3500.)
For a more complete description of the Channel Information fields,
please refer to the Quantar RSS User’s Guide.
Electrical
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 +12 V. Plug
the molded connector end to the external DC connector on the
top panel.
NOTE: The top panel external DC connector will not charge
an external battery.
RF Cabling
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
68P81093C75-O
September 27, 2000
7-5
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-toUHF adapter is provided.
Separate RX and TX
Connectors
In order to use two antennas, first disconnect the duplexer (if
equipped). Connect the Rx antenna to the UHF connector labeled
“RX” on the top panel, and the Tx antenna to the UHF connector
labeled “TX” (Figure 2). Please refer to the Antenna Spacing Chart
on page 4-1 in this manual.
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 Ntype connector labeled “TX” on the duplexer .
3. Connect the antenna UHF-type connector to the connector
labeled “ANT” on the duplexer.
7-6
September 27, 2000
68P81093C75-O
8
Operation
Description
This section describes the switches, pushbuttons, connectors, and
LED indicators on the PDR 3500 station used during local operation
of the station and servicing.
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 6 Switches, Pushbuttons, and Connectors
Top Panel
Wireline connectors
Transmit UHF connector
RSS port connector
Receive UHF connector
DC 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 7 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-O
September 27, 2000
8-1
Wireline
Connections
(RJ-45)
Duplexer
Antenna
Receive
UHF Jack
Transmit
UHF Jack
MAEPF-27065-O
Figure 2 . Switches , Pushbuttons , Connectors, and LED Indicators for PDR 3500
Table 8 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)
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.
September 27, 2000
68P81093C75-O
9
Troubleshooting
Introduction
This section provides troubleshooting recommendations and
procedures for the PDR 3500 station 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:
Recommended Test
Equipment
Test Equipment List
Troubleshooting
Procedures
68P81093C75-O
•
Alarm indicators and their functions
•
Troubleshooting flow charts
•
Module replacement procedures
•
Post-repair procedures: Performing alignment
after replacing defective modules
Follow this list of recommended test equipment when performing
troubleshooting procedures on the PDR 3500 station and ancillary
equipment:
•
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)
The troubleshooting and repair philosophy employs Field
Replaceable Unit (FRU) substitution. The PDR 3500 station is
comprised of self-contained modules (FRUs). Replacing faulty
modules should bring the station back to normal operation.
September 27, 2000
9-1
Many of the troubleshooting procedures require the use of the
Motorola-supplied Radio Service Software (RSS) since the PDR
3500 station 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
station 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 station 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 25.
9-2
September 27, 2000
68P81093C75-O
PROCEDURE 1
ROUTINE
MAINTENCE VISIT
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 Station Troubleshooting Overview (Procedure 1: Routine Maintenance)
68P81093C75-O
September 27, 2000
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 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 25
NO
GO TO
Figure 4 PDR 3500 Station Troubleshooting Overview (Procedure 2: Reported or Suspected Problem)
9-4
September 27, 2000
68P81093C75-O
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 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 25
Figure 4 PDR 3500 Station Troubleshooting Overview (Procedure 2: Reported or Suspected Problem) (Continued)
68P81093C75-O
September 27, 2000
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 5 for the location of all LED indicators on the station’s
equipment. A listing of each LED indicator, along with a description
of the status indicated by each LED, is shown in Table 9.
Table 9: PDR 3500 Station 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.
– 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
September 27, 2000
68P81093C75-O
Table 9: PDR 3500 Station 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-O
September 27, 2000
9-7
9-8
September 27, 2000
68P81093C75-O
STATION CONTROL MODULE
(Front Panel - Cover Plate Removed)
Station On
Station Fail
Intrem/AccD
Control Ch
Rx 1 Active
Rx 2 Active
Rx Fail
Aux LED
Handset
Speaker
RSS Port
Intercom/Shift
CSQ/PL/Off
Vol Down/
Access Disable
Vol Up/Local PTT
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
68P81093C75-O
September 27, 2000
9-9
Interpreting Alarm
Alert Tones
Introduction
Four station alarm conditions are reported with audio alert tones
which are routed to the external speaker connector (RJ-11) on the
front of the control module. (Pin 4 on the RJ-11 is Speaker High; Pin
1 is Speaker Ground.) The alarms are also entered into the alarm log
which can be accessed using the RSS. Refer to the RSS User’s
Guide, part number 68P81085E35.
NOTE: The alarm tones may also be routed to the console
(via the wireline) and transmitted over the air. Refer
to the RSS User’s Guide (part number 68P81085E35)
for details on enabling or disabling these two alarm
routing options.
The four alarm conditions are represented by a series of alarm tones,
from a single beep, to four beeps. Each beep is a 1200 Hz tone,
lasting 125 msec. The alarm tones occur during a repeating 10
second window, with two seconds between successive alarms (when
more than one alarm is active). The following two examples
illustrate the timing of the alarm tones.
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
9-10
Alarm Condition
Name
Alarm Condition Description
Battery Revert
Alarm is reported when station loses AC/DC line power and
reverts to battery backup. Alarm is cleared when station
receives AC/DC power. Should not occur in PDR 3500.
PA Fail
Alarm is reported when PA fails to keyup to full ouput power.
Alarm is cleared upon successful keyup to full power.
Synthesizer
Alarm is reported when either Tx or Rx synthesizers fail to
lock. Alarm is cleared when both sythesizers lock.
Overvoltage
Alarm is reported when battery charging voltage is above
+34.5 V (100 W stations), or +17.25 V (20 W stations). Alarm
is cleared when voltage returns to normal range.
September 27, 2000
68P81093C75-O
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
•
Power Supply Module
•
2.1 MHz Reference Oscillator Circuitry
•
Transmitter-related circuitry on the Station
Control Module (SCM)
In general, the transmitter circuitry is exercised by injecting and
measuring signals using a Motorola R2001 Communications
Analyzer (or equivalent). Measured values outside the acceptable
range indicate a faulty module; values within range verify proper
operation of the above listed modules and circuitry.
Required Test Equipment
Verifying Transmitter
Circuitry Procedure
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)
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
68P81093C75-O
September 27, 2000
9-11
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
9-12
September 27, 2000
68P81093C75-O
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
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.
68P81093C75-O
•
If the PA output is not at the proper power (as set
for the particular station), adjust the output power
as described in the Setup and Connections
section of this manual.
•
If the station will not output the rated power, and
the output is being measured through a duplexer or
antenna relay, the duplexer could be set for the
incorrect frequency, or it could be malfunctioning,
or the antenna relay could be faulty. Connect the
wattmeter directly to the transmit port (UHF
connector) on the station top panel, bypassing the
duplexer or antenna relay. If the station generates
rated power directly from the PA, suspect the
following:
Faulty duplexer or transmit frequency
mismatch
Loose or faulty PA-to-duplexer/antenna relay
cable
Improperly connected or faulty antenna relay
September 27, 2000
9-13
If the station still does not generate rated power, suspect the
following:
Power Amplifier Module failure
Exciter Module failure
Loose or faulty Exciter-to-PA RF cable
Faulty forward voltage or control voltage
translation circuitry on 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.
•
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.
•
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.
9-14
September 27, 2000
68P81093C75-O
Verifying Receiver
Circuitry
•
Remove test equipment.
•
Restore the station to normal service.
•
Return to the trouble shooting flow chart to resume
the troubleshooting sequence.
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
IMPORTANT!
68P81093C75-O
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)
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.
September 27, 2000
9-15
Verifying Receiver
Circuitry Procedure
Step 1. Connect test equipment by performing Step 1 through
3 shown in Figure 7.
NOTE: The cover plate over the SCM side of the chassis
must be removed to perform these tests.
Step 2. Disable PL and carrier squelch by repeatedly pressing
the PL/CSQ/Off button until receiver noise is heard
through the handset (or external speaker). Refer to
Figure 5 for the location of the PL/CSQ/Off button. If
no audio is heard, suspect the following:
•
Faulty Receiver Module
•
Faulty Station Control Module
•
R2001 is outputting a carrier 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:
9-16
•
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
September 27, 2000
68P81093C75-O
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
68P81093C75-O
September 27, 2000
9-17
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).
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 8.)
9-18
September 27, 2000
68P81093C75-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-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 9. When the
transmitter is disabled, the yellow Access disable light
on the SCM will flash. This step is very important.
With the transmitter disabled, the PA Full LED on the
Exciter Module should not light, even when the station
is receiving.
68P81093C75-O
September 27, 2000
9-19
Station Control
Module
Press and hold
Shift Button.
Intcm/Acc D LED
should Flash yellow.
Press Vol Down/
Access Disable
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 8B.
•
Excessive loss in the coaxial cables or coupler.
Step 12. Remove the cable connecting the coupler to the top
panel receive port. Connect the coupler to the
duplexer’s antenna port. Connect the duplexer’s
receive port to the station’s top panel receive port, as
in normal station operation. (See Figure 8B.)
Step 13. Measure the 12 dB SINAD once again, and note the
result. The difference between this 12 dB SINAD level
and the level measured in Step 11 reflects the insertion
loss of the duplexer. The difference should be no
greater than approximately
•
VHF: 1.3 dB
•
UHF: 1.6 dB
If the difference is greater, suspect the following:
9-20
•
Duplexer receive and transmit ports are reversed
•
Loose or damaged cables between the duplexer
and the station
•
Station receive frequency does not match the
duplexer receive frequency. Use a different
frequency or replace the duplexer. (Field tuning of
duplexers is not recommended.)
September 27, 2000
68P81093C75-O
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 transmit frequency does not
match the duplexer receive frequency. Use a different
frequency or replace the duplexer. (Field tuning of
duplexers is not recommended.)
Step 16. If the station is not digital-capable, the Verifying
Receiver Circuitry test procedure is complete. The
receiver circuitry is considered to be operating
properly if all displays and measurements are correct.
1. Remove the test equipment.
2. Restore the station to normal service.
3. Return to the troubleshooting flow chart to resume
the troubleshooting sequence.
If the station is digital-capable, continue with the
Digital Only portion of the Verifying Receiver
Circuitry test procedure.
Verifying Receiver
Circuitry (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:
68P81093C75-O
•
Receiver Module
•
Power Supply Module
•
2.1 MHz Reference Oscillator Circuitry
•
Receiver-related circuitry in the Station Control
Module (SCM)
September 27, 2000
9-21
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
IMPORTANT!
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.
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 antenna-to-receiver preselector RF cable
•
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)
•
UHF: 0.35 µV (-116 dBm)
If you are injecting RF through a duplexer, change the
R2670 injection signal level to:
9-22
September 27, 2000
68P81093C75-O
•
VHF: 0.29 µV (-117.7 dBm)
•
UHF: 0.43 µV (-114.4 dBm)
NOTE: For VHF and UHF stations only, refer to
5. Preselector Field Tuning Procedure in this
section, for procedures to tune the receiver
preselector.
Step 4. Note the receiver BER reading. The BER reading
should be 5% or less. If not, and if a duplexer is being
used, repeat the BER test, bypassing the duplexer. If
the BER is 5% or less after bypassing the duplexer, the
station frequencies do not match the duplexer
frequencies, or the duplexer-to-top panel cables are
faulty.
If the BER, as tested straight into the top panel, is
greater than 5%, tune the preselector and re-check the
BER reading. If a reading of 5%, or less, cannot be
achieved, replace the Receiver Module.
Step 5. This completes the Verifying Receiver Circuitry test
procedure. If all displays and measurements are
correct, the receiver circuitry may be considered to be
operating properly.
1. Remove test equipment.
2. Restore the station to normal service.
3. Return to the trouble shooting flow chart to resume
the troubleshooting sequence.
Wiring Diagram
Please refer to Figure 10 for a conceptual line drawing of the
motherboard, modules, and other components set flat outside of the
chassis and properly interconnected.
Please refer to Figure 11 on page 25 for a detailed diagram of the
connections from the AC inlet connector to the power supply and
chassis ground.
68P81093C75-O
September 27, 2000
9-23
DC
Power
Supply
AC Jack
LED
Switch
Rx
Motherboard
Terminal
Tabs
J20
P10
P9
P5
RSS
Tx
Fan
Receiver
Fan
Exciter
PA
MAEPF-27080-O
Figure 10 Interconnect Diagram
Reference
9-24
From
To
Description
Top panel UHF
Receiver mini-UHF
Top panel AC connector
Power supply terminals H, N, GND 120/240 VAC to power supply
Receive RF coaxial cable
Power supply terminals POS,
NEG
Backplane terminals WHT, BLK
Top panel DC connector
Backplane terminals BLU, BLK
14 VDC input to station
Top panel DB-9 connector
Backplane connector J20
RSS interface ribbon cable assembly
Top panel LED/Switch
Backplane Molex P5/P9
LED/Switch assembly
14 VDC from power supply
Chassis cooling fans
Backplane 3-pin Molex P5
Cooling fan assembly
Backplane terminals RED,
BLK
PA 14 VDC input
14 VDC to PA
Backplane connector P10
PA
Control/feedback ribbon cable
PA mini-UHF
Top panel UHF
Transmit RF coaxial cable
Exciter mini-UHF
PA
RF drive coaxial cable
September 27, 2000
68P81093C75-O
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 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.
68P81093C75-O
September 27, 2000
9-25
Care of Gold-Plated
Connector Contacts
•
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.
The connectors between the modules and the station backplane
board are made with gold-plated card edge connector contacts to
provide maximum reliability. Gold-plated materials do not form a
non-conductive oxide layer and therefore should not require
cleaning under normal conditions.
When the modules have been subjected to many extraction/insertion
cycles, or if the station is operated in a dusty environment, the
contacts may require cleaning. Do not use an eraser or any type of
abrasive substance to clean either the module card edge connectors,
or the backplane connector contacts.
If the cleaning of gold-plated contacts is required, use a soft cloth
dampened with alcohol to lightly wipe the contacts. Be sure not to
touch the contact surfaces with your fingers; finger oils and salts can
contaminate the contact surfaces.
Power Down Station
Before Removing/
Inserting 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.
Module Replacement
9-26
•
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.
This section discusses the replacement of each of the PDR 3500’s
modules and related requirements and considerations.
September 27, 2000
68P81093C75-O
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
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.
3. Remove the cover plate on the left end of the front of the station
by removing two Torx screws from the front of the plate.
Remove the four Phillips screws from the side and bottom
edges of the plate.
4. Pull out the old Control Module by gripping behind its DB-9,
RJ-11, and RJ-45 connectors, distributing pressure equally
among the connectors.
5. Insert the new module. Make sure it is in the cardguides; push it
firmly into the chassis until it seats into the card-edge
connectors on the backplane. (Do not slam the board against the
backplane or push any harder than necessary to seat the
connectors.)
6. If desired, power up the station while it is still out of the case to
make sure the module is securely in place. If the LEDs do not
light, are dim, or flash rapidly, one or more modules are not
seated properly. Unplug the station before continuing to the
next step.
7. Reassemble the station by reversing steps 2 and 3.
After Installing the New
Station Control Module
68P81093C75-O
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.
September 27, 2000
9-27
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
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 two Torx screws from the front of the plate.
Remove the four Phillips screws from the side and bottom
edges of the plate.
4. Pull out the old Wireline Module by gripping its front, right
corner (where there are no parts on the board).
5. Set all jumpers on the replacement board to match those on the
faulty board. These include the following:
•
9-28
Input/ouput impedance matching jumpers
September 27, 2000
68P81093C75-O
•
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
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.
68P81093C75-O
September 27, 2000
9-29
3. Remove the cover plate on the left end of the front of the station
by removing two Torx screws from the front of the plate.
Remove the four Phillips screws from the side and bottom
edges of the plate. Remove two more Phillips screws from the
bottom of the chassis under the preselector.
4. A coaxial cable runs from the receiver’s preselector, through the
center wall of the chassis, and to the top panel UHF connector.
Disconnect the cable from the preselector and push the loose end
of the cable through the center wall so that it is completely clear
of the receiver.
5. Pull the old receiver out by gripping the tabs protruding past
each end of the preselector.
6. Insert the new module. Make sure it fits under the metal rails
inside the chassis. Push it firmly into the chassis until it seats
into the card-edge connectors on the backplane. (Do not slam
the board against the backplane or push any harder than
necessary to seat the connectors.)
7. If desired, power up the station while it is still out of the case to
make sure the module is securely in place.
If any of the LEDs do not light, are dim, or flash rapidly, one or
more of the modules are not seated properly.
8. For VHF and UHF stations, tune the preselector using the
procedure in the Maintenance subsection, Preselector Field
Tuning Procedure. Before continuing to the next step, be sure
to unplug the station.
9. Feed the coaxial cable detached in Step 3 back through the
opening in the center wall of the chassis and reconnect it to the
mini-UHF connector on the preselector.
10. Reassemble the station by reversing Steps 2 and 3.
After Installing the New
Receiver Module
Perform the following alignment procedures as described in the RSS
User’s Guide (part number 68P81085E35), or in the RSS section of
this manual, or in both:
•
Squelch Adjust
•
RSSI 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.
9-30
September 27, 2000
68P81093C75-O
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.
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:
•
68P81093C75-O
ASTRO/Simulcast Launch Time Offset
September 27, 2000
9-31
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.”
Physical Replacement of
the Power Amplifier
1. Turn off the station’s power by unplugging the AC and DC
power cords from the top panel.
2. Remove the eight Phillips screws from the edges of the station’s
top panel and lift the chassis out of the case.
3. Remove the four Phillips screws from the front, right quadrant
of the top panel to release the PA. When removing the fourth
screw, support the PA inside the chassis to prevent it from
falling.
4. Disconnect all four cables between the PA and the station:
a. Unplug the red and black power cable from the PA.
b. Unscrew the mini-UHF connector from the PA.
c. To remove the PA ribbon cable connector, remove the two
Torx screws holding the metal clip over the connector. Pull
the connector loose from the PA.
d. Unscrew the mini-UHF connector on the remaining cable
from the front of the Exciter.
9-32
September 27, 2000
68P81093C75-O
5. Reconnect all four cables removed in Step 4. The ribbon cable
connector is keyed so it cannot be attached incorrectly.
Remember to reattach the metal clip over the ribbon cable
connector.
6. Take the sheet of black thermal conductive film that was
between the old PA and the chassis and place it on the new PA.
7. Place the PA in the chassis and line up the screw holes in the PA
and the thermal film with the holes in the top panel of the
chassis. (It may be useful to insert a pencil, pen, or small
screwdriver through the screw holes in the top panel to aid in
aligning the holes in the conductive film with those in the PA.)
8. While holding the PA with one hand, start two or more Phillips
screws in the top panel to hold the PA in place. Insert the
remaining screws and tighten all four.
9. Place the chassis back in the case and secure it with the eight
Phillips screws around the top panel.
After Installing the New
Power Amplifier
Perform the following alignment procedures as described in the RSS
User’s Guide (part number 68P81085E35), or the Setup and
Connections section of this manual, or both.
•
Power 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 7 of the Backplane subsection of “Module
Replacement.”
3. Remove the four Phillips screws holding the Power Supply to
the top panel of the chassis. Pull the PS out of the chassis.
4. Disconnect all five wires from the Power Supply.
5. Reconnect the wires to the new Power Supply as follows:
•
Green to GND
•
Orange to the “H” INPUT
•
Brown to the “N” INPUT
•
White to the “POS” OUTPUT
•
Black to the “NEG” OUTPUT.
6. While holding the PS with one hand, start two or more Phillips
screws in the top panel to hold the Power Supply in place. Insert
the remaining screws and tighten all four.
68P81093C75-O
September 27, 2000
9-33
7. Finish reassembling the station as described in Steps 8 through
12 of the Backplane subsection of “Module Replacement.”
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 10.
Table 10 Motherboard DIP Switch Settings
Exciter Frequency
Band
Physical Replacement of
the Backplane
PA Model
Switch 1
Switch 2
VHF Range 1
PLD7981
OFF
OFF
VHF Range 2
PLD7981
ON
OFF
UHF Range 1
PLE9367
OFF
ON
UHF Range 2
PLE9369
ON
ON
1. Turn off the station’s power by unplugging the AC and DC
power cords from the top panel.
2. Remove the eight Phillips screws from the edges of the station’s
top panel and lift the chassis out of the case.
3. Remove the cover plate on the left end of the front of the station
by removing two Torx screws from the front of the plate and
four Phillips screws from the side and bottom edges of the plate.
4. Pull the Station Control Module and Wireline Module until they
disengage from their respective backplane connectors. The
modules need not be completely removed from the chassis.
5. On the back of the chassis, remove the six Phillips screws
holding the backplane in place.
6. Slowly, but firmly, pull the bottom edge of the backplane away
from the chassis. Continue pulling until the 80-pin card edge
connectors dislodge from the Receiver and Exciter modules.
Then pull the backplane down and away from the top panel of
the chassis.
7. Lay the backplane flat behind the station, and remove all the
attached wires.
8. If the dip switches on the new backplane have not been set to
match the PA/Exciter combination of the station, set them now
according to Table 10.
9-34
September 27, 2000
68P81093C75-O
9. Lay the new backplane behind the station, and attach all the
wires as shown in Figure 10: Interconnect Diagram.
10. Hold the backplane in position behind the chassis. Ensure the
wires from the backplane do not bind against the Power Supply.
Slide the top of the board toward the chassis top panel, making
sure the two RJ-45 connectors fit into their cutouts.
11. Hold the Receiver Module from the front of the chassis, and
press the bottom center of the backplane into place against the
chassis. Snap the 80-pin connectors onto the Receiver and
Exciter.
12. While holding the top right portion of the backplane against the
chassis, press the Control Module, and then the Wireline
Module, into the chassis from the front, until they snap into the
backplane.
13. Using the six Phillips screws with lock washers, secure the
backplane to the chassis.
14. Finish reassembling the station by reversing Steps 2 and 3.
After Installing the New
Power Amplifier
Perform the following alignment procedures as described in the RSS
User’s Guide (68P81085E35), or the Setup and Connections
section of this manual, or both:
•
Power 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!
68P81093C75-O
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.
September 27, 2000
9-35
Required Test
Equipment
The following test equipment is required to properly tune the
preselector assembly:
•
RF Signal Generator: Motorola R2600
Communications Analyzer, R2001
Communications Analyzer (see note), or
HP8656A signal generator (or equivalent)
•
Dip/Peak Monitor: HP435B Power Meter (or
equivalent) with HP8484A sensitive power head,
Boonton Model 92E with BNC input, or R2001/
R2600, using the spectrum analyzer function.
•
Torque Driver, capable of delivering 12 in. – lb. of
torque, and 10 mm deep well socket.
•
Tuning probe: Motorola Part number
0180763D22, part of TRN7799A tuning kit.
•
Flat-blade 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.
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
9-36
September 27, 2000
68P81093C75-O
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.
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:
68P81093C75-O
September 27, 2000
9-37
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 12.
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 12 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 36. Set the level to +5 dBm.
9-38
September 27, 2000
68P81093C75-O
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.
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 13 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:
68P81093C75-O
September 27, 2000
9-39
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 < 440 MHz, then the
alignment frequency = 440 MHz.
Otherwise, use the actual frequency from Step 1.
Step 4. If the Receiver Module is Range 3 or 4, determine the
alignment frequency as follows:
If the frequency (from Step 1) is > 518 MHz, then the
alignment frequency = 518 MHz.
If the frequency (from Step 1) is < 472 MHz, then the
alignment frequency = 472 MHz.
Otherwise, use the actual frequency from Step 1.
For stations with multiple receive frequencies, calculate the
frequencies of the alignment signal as follows:
Step 1. From the site documentation, or the RSS, note the
receive frequency for each channel supported by the
station.
Step 2. Calculate a midpoint frequency as follows:
Fmid = (Fhighest + Flowest) ÷ 2
Step 3. Using Fmid in place of the station receive frequency,
perform Step 1 through Step 4 above.
Preparing Equipment
9-40
Step 1. Make sure the Receiver Module (with the Preselector
Assembly) is installed in a functional PDR 3500.
September 27, 2000
68P81093C75-O
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. Using the torque driver and deep-well socket, loosen
the three tension nuts on the adjustment screws.
Step 5. De-tune the preselector as follows:
Turn tuning screws 3 and 4 clockwise until they bottom
out. Be careful not to apply more than 3 in. – lb. of
torque to prevent warping the preselector cover and
housing.
Step 6. Connect the test equipment as shown in Figure 14.
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 14 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 39. Set the level to +5 dBm.
68P81093C75-O
September 27, 2000
9-41
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.
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 15 Location of Tuning Screws and Cavity Probe Holes
9-42
September 27, 2000
68P81093C75-O
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 16. for the following functional theory of operation.
Transmitter Circuitry
Operation
Introduction
The Transmitter Circuitry consists of the following:
• Exciter Module
• Power Amplifier (PA) Module
These modules combine to produce the modulated, amplified RF
signal. The RF signal is transmitted via the station transmit antenna.
Exciter Module
Operation
The Exciter Module is a microprocessor-controlled module,
generating a modulated RF signal at the desired transmit frequency.
It sends this signal to the Power Amplifier for amplification. The
circuitry operates as follows:
1. The Synthesizer/Voltage-Control Oscillator (VCO) accepts
frequency programming data from the Station Control Module
(SCM) via the Serial Peripheral Interface (SPI) bus and
generates an RF carrier signal at the specified frequency.
The modulation audio signal from the SCM modulates the carrier,
resulting in a modulated RF signal at approximately +13dBm. The
modulated signal is routed to the Power Amplifier.
2. The TX Power Control Circuitry accepts an output power detect
voltage from the Power Amplifier and compares this signal to a
reference voltage representing the desired output power.
Based on the comparison, a power control voltage is generated to
control the output power from the PA. This feedback and control
loop continually monitors the output power. It adjusts the control
voltage to maintain the proper output power from the PA.
68P81093C75-O
September 27, 2000
10-1
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 is amplified by the RF PA and sent to the
site transmit antenna.
The transmit path inside the RF PA contains a directional coupler
(calibrated at setup), which feeds a DC voltage (proportional to the
output power) to the TX Power Control Circuitry in the Exciter
Module. This signal serves as the feedback signal in the power
control loop.
Receiver Circuitry
Introduction
The Receiver Circuitry performs the following functions:
• Accepts receive RF signals from the site receive antenna
• Filters and dual conversion
• Outputs a digitized receive signal to the Station Control Module.
Receiver Module
Operation
The receive signal is generated from the site receive antenna to a
multi-pole, preselector filter which provides highly selective
bandpass filtering.
The filtered signal is then amplified and fed to the RF input of the 1st
mixer.
The 1st mixer combines the filtered signal with an injection signal
generated by the Synthesizer/VCO. This results in a 21.45 MHz
(VHF), or 73.35 MHz (UHF) 1st IF (intermediate frequency) signal.
(The injection signal is determined by frequency programming data
from the Station Control Module via the SPI bus.)
The 21.45 or 73.35 MHz 1st IF is filtered and routed to a custom
receiver IC. This component contains the following circuitry:
• 2nd injection and mixing
• Amplification
• A/D (analog to digital) conversion
This results in a digitized receive signal. This signal is routed to the
Station Control Module as differential data.
10-2
September 27, 2000
68P81093C75-O
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.
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
68P81093C75-O
September 27, 2000
10-3
• 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.
Power Supply Module
Operation
The Power Supply Module is a switching-type power supply which
accepts an AC input (85-265 VAC, 49-61 Hz) and generates the 13.8
VDC for the station modules and the power regulation circuitry on
the motherboard.
The Power Supply Module is capable of 12 A continuous load and
18 A maximum load.
10-4
September 27, 2000
68P81093C75-O

---

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