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MX Series - 1 Watt  UHF AMPLIFIER

TSM 20-312 rev 0:  June 14, 2000

10

1

W UHF Amplifier

GENERAL DESCRIPTION

ABOUT THIS MANUAL

It will be observed that this manual consists of a collection of separate publications, each one of which
describes its own module or section of the equipment.  Parts lists, applicable alignment instructions, and
illustrations which generally consist of assembly diagrams and schematics are included in each of these
booklets, which are identified by a "PUB" number and revision.

These mini-publications represent our attempt to assure quality of our documentation and at the same
time maintain the material as current as possible.  In the usual large manual or handbook, a change made
to a single module might require a sentence or even several paragraphs be added, with the result that all
text following the change will shift, consequently requiring renumbering of all pages and subsequent
reprinting.  These operations create an undesirable delay between the release of the revision to the
equipment and the re-issue of its manual, despite our extensive use of computers. It is our hope that this
republication delay will be reduced because revisions are nearly always done on one module at a time,
and a few pages pertinent to one module are obviously simpler to revise and reprint than the many pages
of a handbook.

Each section or module of the equipment is described in its own booklet.  For each booklet, the format
generally consists of a block diagram where applicable, then the relevant specifications, then the circuits
are described, then test/alignment procedures are defined, and then the parts list is presented. Finally, the
Figures (illustration drawings in 11" x 17" size) complete the booklet.

The Parts Lists in all booklets have been compiled by, and then extracted from, the LARCAN materials
management computer system, and are current as of the date of issue of the booklet.

We have attempted to present our circuit descriptions in such a way that they would be meaningful to the
competent technician whose main objective is to look after the equipment.  We have therefore minimized
the inclusion of material usually found in engineering textbooks, professional papers, and doctoral theses,
because much of the information from such sources, although meaningful to the EE, can be too heavy and
overdone for the beleaguered technician who is desperately trying to put a transmitter back on the air.

3-ring binders are used for LARCAN manuals as a courtesy to our customers because a 3-ring binder
enables assembly drawings and/or equipment schematics to be temporarily extracted and used in a more
convenient place when necessary.  (Before their joining LARCAN, several of our staff technical people
were previously broadcast station engineering technicians, whose custom was to temporarily tape their
schematics to the transmitter cabinet doors for convenient reference when working inside the equipment).

Drawings whose numbers begin with 30C, 31C, 40D, 41D, 50E, or 51E may have been reduced in size or
even split into several sheets to fit into the booklet's 11" x 17" format. Should any reduced drawings as
presented in our manuals be found difficult to read, full size engineering blueprints are available at no
charge by simply writing, calling or FAXing our Customer Service department and requesting the
referenced drawing and revision wanted.

LARCAN INC.

228 Ambassador Drive,

Mississauga, Ontario, Canada  L5T 2J2

Phone (905)-564-9222;  FAX (905)-564-9244.

Summary of Contents for MX Series

Page 1: ...TSM 20 312 TECHNICAL MANUAL 1 WATT UHF AMPLIFIER FOR MX1U SERIES TV TRANSMITTER TRANSLATOR LARCAN INC 228 AMBASSADOR DRIVE MISSISSAUGA ONTARIO CANADA L5T 2J2 PHONE 905 564 9222 FAX 905 564 9244 Rev 0...

Page 2: ...the 1W Amplifier 6 5 Production Changes 6 GENERAL DESCRIPTION INTRODUCTION 7 SPECIFICATIONS 8 ABOUT THIS MANUAL 9 ON SITE First Time Start up 10 PUBLICATION LIST for MX series 1W UHF Amplifier PUB99...

Page 3: ...icing the vacuum cleaner All material in this manual is copyright LARCAN INC and reproduction in whole or in part in any form for any purpose other than exclusive use of the equipment owner without pr...

Page 4: ...TINE at all times 1 KILL THE AC POWER BEFORE IT KILLS YOU Under no circumstance should any person reach within the cabinets for the purpose of servicing or adjusting the equipment without first discon...

Page 5: ...MX Series 1 Watt UHF AMPLIFIER TSM 20 312 rev 0 June 14 2000 4 1W UHF Amplifier...

Page 6: ...case the amplifier model 40D2180G3 which it designates as level 0 The computer first checks the parent list for major subassemblies then each subassembly list for more subassemblies etc and arranges t...

Page 7: ...tech schools and therefore learned about component values that are specified with the use of decimal notation but schematics drawn this way are common in other parts of the world In a parts list more...

Page 8: ...to time it may become necessary that changes be made in the equipment described in this manual Such changes are usually made either to provide improved performance or to accommodate component substit...

Page 9: ...ected power are displayed on an analog percent power meter located on the front panel of the amplifier unit AMPLIFIER CHAIN The amplifier chain consists of two stages of amplification These are the Pr...

Page 10: ...ual Carrier 0 5 1 0 dB Harmonic Radiation 60 dB Spurious Emission fv 4 5MHz fv 9 0 MHz 40 dB Intermodulation Distortion 50 dB ELECTRICAL AC Line Input 117VAC Power Consumption 40VA typical ENVIRONMENT...

Page 11: ...ted Finally the Figures illustration drawings in 11 x 17 size complete the booklet The Parts Lists in all booklets have been compiled by and then extracted from the LARCAN materials management compute...

Page 12: ...ters only Apply 117VAC to the exciter Connect a 1 V peak to peak video signal to the exciter video input jack Connect an audio signal to the exciter audio input Connect the RF output of the exciter to...

Page 13: ...MX Series 1 Watt UHF AMPLIFIER TSM 20 312 rev 0 June 14 2000 12 1W UHF Amplifier GENERAL DESCRIPTION Notes...

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