Specifications

Section I
Introduction/Specifications
1.1 Scope and Purpose
This technical manual contains the information necessary to
install and maintain the DX100-3F. The various sections of this
technical manual provide the following types of information.
• Section I, Introduction/Specifications, provides general
manual layout, frontispiece, equipment description, block
diagram, and available options.
• Section II, Installation/Initial Turn-On, provides initial turn
on instructions.
• Section III,Operators Guide, provides normal turn-on/turn-
off procedures, taking meter readings, and transmitter op-
erations.
• Section III-A, Controls/Indicators, provides identification
and functions of all external panel controls and indicators,
plus multimeter reading log sheets.
• Section IV, Overall System Theory provides block diagram
and detailed theory of operation of the transmitter and
various sections that apply to the overall transmitter. It
includes the following:
RF Section
PredriverSplitter(A46)andDriverDriveCables
RF Splitter (A6) and RF Drive Cables
Output Network
Power Supply Section
Low Voltage Power Supply
RF Amplifier Power Supply
Driver Multimeter (A9)
Control Multimeter (A41)
• Section V, Maintenance/Alignments, provides a transmitter
frequency change procedure.
• Section V-A, Cabinet Views, provides drawings that show
the location of major components and modules in the
cabinets.
• Section VI, Troubleshooting, providessimplified flow style
troubleshooting procedures down to the board level.
• Section VI-A, Emergency Operating Procedures, provides
methods to maintain on-air operation of the transmitter in
the event of a failure.
• Section VII, Parts List, provides a parts list for the overall
transmitter as well as individual modules.
The following subsections provide principles of operations for
boards and modules in the DX100-3F:
• Section A, Synthesizer Interface (A1) [A2 optional]
• Section B, RF Interface (A3)
• Section C, Driver Combiner Motherboard (A5)
Buffer Amplifier (A4)
Predriver (PD1)
Drivers (D1-D14)
• Section D, Predriver Tuning Board (A54)
• Section E, Driver Encoder (A7)
• Section F, RF Combiner Motherboards
Main Combiner Motherboards (A11-A19)
Binary Combiner Motherboard (A10)
Figure 1-1. Front View of Transmitter
888-2339-002 1-1
WARNING: Disconnect primary power prior to servicing.