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
2-8 UT-4R400 UHF Project 25
Digital
Transmitter
Instruction
Manual
These
selected
Timeouts
can then be used in the
Timeout
Value
field in each
Transmitter
Channel
Setting. These fields are used to program the
parameters
for a single
Transmitter
channel
only.
There are 32
different
available
channels
labeled
A1 - A16 and B1 - B16. The
parameters
for each
channel
are
independent
of
parameters
in other channels.
2.13.2
Channel
Wide
Settings
The
Receiver
may be
programmed
with up to 32 channels, each with a
different
frequency,
channel
spacing and
modulation
type. The channels are arranged in two banks of 16 channels
each, referred to as Bank A and Bank B. In this manual, a sp
ecific
channel
is referred to by its
bank and
channel
i.e.
B12 would refer to
channel
12 in bank B. The following are all the settings,
which may be
programmed
on a
per-channel
basis:
2.13.2.1
Channel
Name
Each
channel
may be assigned a text name of up to 11 characters. The name is stored in the radio,
but is never broadcast. It is provided as a means of
identifying
the
channel
during configuration.
The
channel
name will
default
to the bank and
channel
number
(i.e.
“A1”
for bank A,
channel
1).
2.13.2.2 Frequency
The
transmitter’s
frequency may be set here. The Radio Programming Software will only allow
frequencies
within the
operation
band (set in the
Transmitter
Wide options above) to be entered.
2.13.2.3 Analog Bandwidth
This
setting
should be changed to
match
the channel spacing and bandwidth of the analog channel.
This
setting
is
visible
only when the Channel Type field is set to Analog.
2.13.2.4
Deviation
This is a read-only field that shows the
maximum
amount that the
transmitter
frequency will
deviate. This field changes
automatically
in response to the Channel Bandwidth setting. A
bandwidth of 25 kHz selects a
maximum
deviation
of 5
kHz,
while a bandwidth of 12.5 kHz
selects a
maximum
deviation
of 2.5
kHz.
2.13.2.5
Channel
Type
Allowed
values here are Project 25 and Analog. Project 25
signaling
is a purely
digital
mode
compatible
with other
APCO
Project 25 radios.
Analog
mode is for
transmitting
analog FM
modulated
signals. In
either
case, the audio at the
Unbalanced
Audio input is used to
modulate
the
transmitter. The audio signal may also be
injected
at the CNTL BUS jack on the front panel for
interfacing
to MT-4
Interim
Receivers.