Operating and Safety Instructions Chapter 1

10-kW UHF Transmitter with Chapter 1, Introduction
Feedforward Drive
840A, Rev. 0 1-1
Chapter 1
Introduction
This manual explains the installation,
setup, alignment, and maintenance
procedures for the 840A 10-kW UHF
transmitter with feedforward drive. It is
important that you read all of the
instructions, especially the safety
information in this chapter, before you
begin to install or operate the unit.
1.1 Manual Overview
This instruction manual is divided into
five chapters and supporting appendices.
Chapter 1, Introduction, contains
information on the assembly numbering
system used in the manual, safety,
maintenance, return procedures, and
warranties. The second chapter describes
the transmitter and includes discussions
on system control and status indicators
as well as remote control connections.
Chapter 3 explains how to unpack,
install, setup, and operate the
transmitter. Chapter 4 contains a
detailed discussion of the circuits and
boards that make up the 840A
transmitter. Chapter 5, Detailed
Alignment Procedures, provides
information on adjusting the system to
achieve peak operation of the
assemblies. The appendices contain
assembly and subassembly drawings and
parts lists as well as system
specifications.
1.2 Assembly Designation Procedure
ADC has assigned assembly numbers,
such as Ax (x=1,2,3…), to all assemblies,
trays, and boards that are referenced in
the text of this manual and shown on the
block diagrams and interconnect
drawings provided in the appendices.
These supporting documents are
arranged in increasing numerical order in
the appendices. Section titles in the text
for assembly and tray descriptions or
alignment procedures also indicate the
associated drawing(s) and the relevant
appendix that contains that drawing.
Sections describing vendor-supplied
items, such as meters and power
supplies, do not contain this information.
1.3 Safety
The UHF transmitters manufactured by
the Broadcast Systems Division of ADC
are designed to be easy to use and repair
while providing protection from electrical
and mechanical hazards. Listed
throughout the manual are notes,
cautions, and warnings concerning
possible safety hazards that may be
encountered while operating or servicing
the transmitter. Please review these
warnings and familiarize yourself with the
operation and servicing procedures
before working on the transmitter.
Read All Instructions
– All of the
operating and safety instructions should
be read and understood before operating
this equipment.
Retain Manuals
– The manuals for the
transmitter should be retained at the
transmitter site for future reference. We
provide two sets of manuals for this
purpose; one set can be left at the office
while one set can be kept at the site.
Heed all Notes, Warnings, and
Cautions
– All of the notes, warnings,
and cautions listed in this safety section
and throughout the manual must be
followed.
Follow Instructions
– All of the
operating and use instructions for the
transmitter should be followed.
Cleaning
– Unplug or otherwise
disconnect all power from the equipment
before cleaning. Do not use liquid or
aerosol cleaners. Use a damp cloth for
cleaning.