User's Manual

Digital UHF Transmitter Chapter 1, Introduction
DT835A, Rev. 1 1-1
Chapter 1
Introduction
This manual explains the installation,
setup, alignment, and maintenance
procedures for the DT835A Digital UHF
Transmitter. 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
four chapters and supporting appendices.
Chapter 1, Introduction, contains
information on safety, maintenance,
return procedures, and warranties. The
Chapter 2, System Description and
Customer Remote Interface Connections,
describes the transmitter and includes
discussions of system control and status
indicators and remote control
connections. Chapter 3, Installation and
Set up Procedures, explains how to
unpack, install, setup, and operate the
transmitter. Chapter 4, Circuit
Descriptions, provides information on the
boards and subassemblies that make up
the DT835A. Chapter 5, Detailed
Alignment Procedures, provides
information on adjusting the system
assemblies for optimal operation The
appendices contain sample log sheets,
typical operational readings, assembly
and subassembly drawings and parts list,
and system specifications.
1.2 Safety
The digital UHF transmitters
manufactured by Axcera are designed for
ease of 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 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 power from the equipment
before cleaning. Do not use liquid or
aerosol cleaners. Use a damp cloth for
cleaning.
Ventilation – Openings in the cabinets
and tray front panels are provided for
ventilation. To ensure reliable operation,
and to protect the unit from overheating,
these openings must not be blocked.
Servicing – Do not attempt to service
this product yourself until becoming
familiar with the equipment. If in doubt,
refer all servicing questions to qualified
Axcera service personnel.
Replacement Parts – When
replacement parts are used, be sure that
the parts have the same functional and
performance characteristics as the
original part. Unauthorized substitutions
may result in fire, electric shock, or other