User Manual
Table Of Contents
- 1GENERAL
- 1.1Introduction
- 1.2Interim Operation
- 1.3Manual Organization
- 1.4UT-4R400 Transmitter Family Models
- 1.5Performance Specifications
- 1.5.1General
- 1.5.2Audio Specifications
- 1.5.3Physical Specifications
- 2THEORY OF OPERATION
- 2.1General
- 2.2Power Supply
- 2.3High Speed Serial Interconnect
- 2.4Audio Circuits
- 2.5PTT Circuitry
- 2.6Microprocessor Board
- 2.7Channel and Bank Selection
- 2.7.1Channel Select Line Mapping
- 2.8Jumper Functions and standard configuration
- 2.9Hang Timer Selection
- 2.10Kerchunk noise selection
- 2.11Test Points
- 2.12Connector Pinouts
- 2.12.1Connector J9
- 2.12.2Connector P1
- 2.13Transmitter Programming
- 2.13.1Transmitter Wide Options
- 2.13.1.1Frequency Band
- 2.13.1.2Source ID
- 2.13.1.3Secure Hardware Equipped
- 2.13.1.4Timeout Options
- 2.13.2Channel Wide Settings
- 2.13.2.1Channel Name
- 2.13.2.2Frequency
- 2.13.2.3Analog Bandwidth
- 2.13.2.4Deviation
- 2.13.2.5Channel Type
- 2.13.2.6Audio Pre-emphasis
- 2.13.2.7Timeout Value
- 2.13.2.8Project 25 Squelch Settings: Network Access Code (NAC)
- 2.13.2.9Project 25 Squelch Settings: Talk Group ID (TGID)
- 2.13.2.10Analog Signaling Settings: Signaling
- 2.13.2.11Analog Signaling Settings: CTCSS Tone
- 2.13.2.12Analog Signaling Settings: Reverse Burst
- 2.13.2.13Analog Signaling Settings: DCS Code
- 2.13.2.14Analog Signaling Settings: Turnoff Code
- 2.13.2.15Analog Squelch Settings: Invert DCS
- 3Transmitter Assembly and Adjustment
- 3.1Frequency Change
- 3.2Minor Frequency Change
- 3.3Major Frequency Change
- 3.4Digital Signal Processor Board Alignment
- 3.4.1Radio Service Software
- 3.4.2Radio Programming Interface Module Interconnection
- 3.4.3Reference Oscillator Adjustment
- 3.4.4Transmitter Deviation Balance Adjustment
- 3.4.5Transmitter Deviation Limit Adjustment
- 3.4.6Audio Level Alignment
- 3.4.7Amplifier Alignment
- 3.5Recommended Test Equipment List
- 3.6Repair Note
- 3.7Printed Circuit board Numbering Convention
- 4Repeater System Configuration
- 4.1Interim Repeater
- 4.1.1Repeater Interconnect Cable Pinout
- 4.2Project 25 Compliant Repeater
- 4.3Repeater System Troubleshooting
- 5ILLUSTRATIONS
- 5.1Digital Repeater Transmitter Front Panel
- 5.2Digital Repeater Transmitter Exploded View
- 5.3Digital Repeater Transmitter Block Diagram (Interim Mode)
- 5.4Digital Repeater Transmitter Schematic Diagram
- 5.5Digital Repeater Transmitter Main Board Component Layout (Bottom)
- 5.6Digital Repeater Transmitter Main Board Component Layout (Top)
- 5.7Digital Repeater Microprocessor Board Component Layout (Bottom)
- 5.8Digital Repeater Microprocessor Board Component Layout (Top)
- 6PARTS LIST
- 6.1Digital Repeater Transmitter Main Board Parts List
- 6.1.1Digital Repeater Transmitter Main Board Electrical Parts List
- 6.1.2Digital Repeater Transmitter Main Board Mechanical Parts List
- 6.2Digital Repeater Microprocessor Board Parts List
- 6.2.1Digital Repeater Microprocessor Board Electrical Parts List
- 6.2.2Digital Transmitter Additional PCBs
- 7REVISION HISTORY
DE
DANIELS
ELECTRONICS
UT-4R400 UHF Project 25
Digital
Transmitter
Instruction
Manua
l 1-1
1
GENERAL
1.1 Introduction
The UR-4R400 Project 25
Digital
Transmitters
are low current, synthesized FM
Transmitters
capable
of analog or Project 25
digital
operation
in 12.5 kHz (narrow band) or 25 (wide band)
channels. They op
erate
over the bands from 406-430 and 450-470 MHz.
Modular
design allows
each of the
Transmitter’s
internal
modules to be
individually
assembled and tested, which
facilitates
construction, tuning, and
general
Transmitter
maintenance.
The UT-4R400
Transmit
ter combines state of the art
performance
in a
compact
modular enclosure
for
applications
ranging from
remote
mountain
top
repeaters
to congested urban radio
environments. Each
Transmitter
module is
characterized
by dependable, low
maintenance
performance
under the most severe
environmental
conditions.
The UT-4R400
Transmitter
is
compatible
with all
Daniel’s
subrack and base
station
enclosures. It
supports a basic analog interface, and may be used in a mixed system with MT-2 and MT-3 series
Receivers
and Transmitters.
1.2 Interim
Operation
Although
the UT-4R400
family
of
transmitters
can
generate
Project 25 voice transmissions, it
cannot
currently
be used to
create
a fully
compliant
Project 25 repeater.
All
hardware necessary to
enable
a fully
complian
t Project 25
transmitter
is present, however a firmware upgrade will be
required to
achieve
this
capability.
In its
Interim
Operation
mode, the
transmitter
can
accept
baseband audio and
remodulate
it as a FM analog or Project 25
digital
signal. In a repeater made
up of and
interim
Receiver
and Transmitter, a voice signal will be
repeated
in
either
mode, but
other Project 25
digital
information
such as Network Addressing Code, Talk Group ID, and low
speed data will be lost.
1.3 Manual
Organization
The org
anization
of this
document
reflects
the modular
construction
of the UR-4
family
of
products. Each product is fully described within its
respective
"sub-manual";
all of which are
contained
within this document. In general, each of these sub-manuals
contai
n:
1. A
functional
description
and
specification
summary.
2. A
detailed
technical
description
(Theory of Operation).
3. Assembly, setup and
alignment
procedures
relevant
to the
particular
module.
The following sub-manual is
contained
within this document
cluster:
UHF
Amplifier
Instruction
Manual:
This
manual
provides
information
on
alignment
and
operation
of the 2 and 8
Watt
RF
amplifier
modules.
The following
manual
is also required for
alignment
of the UT-4
family
transmitter.
Radio
Service
Soft
ware
Manual:
This
manual
provides
instructions
on using the PC-based Radio
Programming Software
package
to perform
Transmitter
alignment
and frequency and mode
selection. This
manual
is
available
as a PDF file on CD that is supplied in the Radio Service
Software and
Interface
Kit.