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  • ii

    Revision ControlRevision Print Date

    Initial Release (K807139) June 1996

    Revision 1 (1010331) November 1996

    Revision 2 (1010332) August 1997

    Revision 3 (9002391) February 1998

    Revision 4 (9002391) October 1998

    Revision 5 (901047-1) October 1999

    Revision 6 (901047-2) May 2000

    Revision 7 March 2002

    Revision 8 February 2006

    Important Notices2006, Crown Broadcast, a division of International Radio and Electronics, Inc.

    Portions of this document were originally copyrighted by Michael P. Axman in 1991.

    All rights reserved. No part of this publication may be reproduced, transmitted,transcribed, stored in a retrieval system, or translated into any language in anyform by any means without the written permission of Crown International, Inc.

    Printed in U.S.A.

    Sony and RCA are trademarks of their respective companies.

    Crown attempts to provide information that is accurate, complete, and useful.Should you find inadequacies in the text, please send your comments to the follow-ing address:

    International Radio and Electronics25166 Leer Drive, P.O. Box 2000

    Elkhart, Indiana, 46515-2000 U.S.A.

  • iii

    ContentsContentsContentsContentsContentsSection 1Getting Acquainted ..................................... 111.1 Your Transmitter ............................................................................................... 121.2 Applications and Options ................................................................................... 131.2.1 Stand-Alone .................................................................................................. 141.2.2 Backup .......................................................................................................... 141.2.3 Booster ......................................................................................................... 141.2.4 Exciter ........................................................................................................... 141.2.5 Translator ...................................................................................................... 151.2.6 Satellator ...................................................................................................... 161.3 Transmitter/Exciter Specifications ..................................................................... 171.4 Receiver Specifications ..................................................................................... 191.5 Safety Considerations ...................................................................................... 1101.5.1 Dangers ...................................................................................................... 1101.5.2 Warnings .................................................................................................... 1101.5.3 Cautions...................................................................................................... 110

    Section 2Installation ............................................... 212.1 Operating Environment ...................................................................................... 222.2 Remove PA Tray Spacers .................................................................................. 222.3 Power Connections ........................................................................................... 232.4 Frequency (Channel) Selection .......................................................................... 252.4.1 Modulation Compensator .............................................................................. 262.4.2 RF Tuning Adjustments ................................................................................. 272.5 Receiver Frequency Selection ............................................................................ 272.6 RF Connections ................................................................................................. 292.7 Audio Input Connections ................................................................................. 2102.8 SCA Input Connections ................................................................................... 2112.9 Composite Input Connection ........................................................................... 2112.10 Audio Monitor Connections ............................................................................. 2122.11 Pre-emphasis Selection ................................................................................... 2122.12 Processor Bypass Option ................................................................................ 2122.13 Program Input Fault Time-out ......................................................................... 2132.14 Remote I/O Connector ..................................................................................... 213

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    Section 3Operation ................................................. 313.1 Initial Power-up Procedures .............................................................................. 323.2 Power Switches................................................................................................. 343.2.1 DC Breaker .................................................................................................... 343.2.2 Power Switch ................................................................................................ 343.2.3 Carrier Switch ............................................................................................... 343.3 Front Panel Bar-Dot Displays ............................................................................. 353.3.1 Audio Processor Input .................................................................................. 353.3.2 Highband and Wideband Display .................................................................. 353.3.3 Modulation Display ....................................................................................... 353.5 Processing Control ............................................................................................ 363.6 Stereo-Mono Switch .......................................................................................... 363.4 Input Gain Switches .......................................................................................... 363.7 RF Output Control ............................................................................................. 373.8 Digital Multimeter .............................................................................................. 373.9 Fault Indicators ................................................................................................. 38

    Section 4Principles of Operation................................. 414.1 Part Numbering ................................................................................................. 424.2 Audio Processor Circuit Board .......................................................................... 434.3 Stereo Generator Circuit Board .......................................................................... 444.4 RF Exciter Circuit Board .................................................................................... 464.5 Metering Circuit Board ...................................................................................... 484.6 Motherboard ..................................................................................................... 494.7 Display Circuit Board ....................................................................................... 4104.8 Voltage Regulator Circuit Board ...................................................................... 4114.9 Power Regulator Circuit Boards ...................................................................... 4124.10 RF Driver ......................................................................................................... 4124.11 RF Amplifier .................................................................................................... 4134.12 Chassis ........................................................................................................... 4134.13 RF Output Filter & Reflectometer ..................................................................... 4144.15 Receiver Circuit Board Option ......................................................................... 414

  • vSection 5Adjustments and Tests ................................. 515.1 Audio Processor Adjustments ........................................................................... 525.1.1 Pre-Emphasis Selection ................................................................................ 525.1.2 Pre-Emphasis Fine Adjustment ..................................................................... 525.2 Stereo Generator Adjustments .......................................................................... 535.2.1 Separation .................................................................................................... 535.2.2 Composite Output ......................................................................................... 535.2.3 19 kHz Level ................................................................................................. 535.2.4 19 kHz Phase ................................................................................................ 535.3 Frequency Synthesizer Adjustments .................................................................. 545.3.1 Frequency (Channel) Selection ...................................................................... 545.3.2 Modulation Compensator .............................................................................. 545.3.3 Frequency Measurement and Adjustment ..................................................... 545.3.4 FSK Balance Contro