Codan Radio Communications UT 4D400 Users Guide

P25 DIGITAL UHF
TRANSMITTER
INSTRUCTION MANUAL

UT-4D 406-470 MHZ

Covers Models:
UT-4D420-R0-X00 UT-4D460-R0-X00

Copyright © 2003 Daniels Electronics Ltd. All rights reserved. No
part of this publication may be reproduced, stored in a retrieval system
or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording or otherwise, without the prior written consent
of Daniels Electronics Ltd.

Document Number:

Revision:

Revision Date:

DE™ is a registered trademark of Daniels Electronic Ltd. registered in
the U.S. Patent and Trademark Offi ce.

Module Manuals Included:
IM23-UT400AMP

IM23-001
1-0-0
Aug 2003

Daniels Electronics Ltd.

Victoria, BC

PRINTED IN CANADA

ii

DOCUMENT CONTROL

This document has been produced, verifi ed and
controlled in accordance with Daniels Electronics’
Quality Management System requirements.

Please report any errors or problems to Daniels
Electronics’ Customer Service Department.

NOTE

The user’s authority to operate this equipment could
be revoked through any changes or modifi cations not
expressly approved by Daniels Electronics Ltd.

The design of this equipment is subject to change
due to continuous development. This equipment may
incorporate minor changes in detail from the information
contained in this manual.

P25 Digital UHF Transmitter Instruction Manual
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Contents

General Information ...............................................................1

Introduction ................................................................................................1

Performance Specifi cations .......................................................................2

Theory of Operation ...............................................................5

General ...................................................................................................... 5

Jumper Functions and Standard Confi guration ........................................ 7

Test Points .................................................................................................8

Transmitter Programming ........................................................................ 10

Transmitter Assembly and Adjustment................................. 13

Repair Note.............................................................................................. 13

Transmitter Assembly and Adjustment..................................................... 14

Recommended Test Equipment List ........................................................14

Frequency Change .................................................................................. 14

Digital Signal Processor Board Alignment ............................................... 15

iii

Repeater System Confi guration........................................... 19

Digital Repeater ....................................................................................... 19

Repeater System Troubleshooting........................................................... 20

Illustrations and Schematics ................................................ 23

P25 Digital Transmitter Front Panel......................................................... 24

P25 Digital Transmitter Block Diagram .................................................... 25

P25 Digital Transmitter Component Layout - Bottom............................... 26

P25 Digital Transmitter Component Layout - Top .................................... 27

P25 Digital Transmitter Schematic Diagram ............................................ 28

P25 Adapter Board Component Layout ................................................... 29

P25 Adapter Board Schematic Diagram .................................................. 29

Parts Lists ............................................................................ 31

P25 Digital Transmitter Electrical Parts List............................................. 31

P25 Transmitter Mechanical Parts List .................................................... 34

P25 Adapter Board Parts List................................................................... 36

Revision History ................................................................... 37

P25 Digital UHF Transmitter Instruction Manual

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Manual Organization

1

GENERAL

INFORMATION

The organization of this document refl ects the
modular construction of the UT-4D 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 contain:

1. A functional description and specifi cation
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 Amplifi er Instruction Manual: This
manual provides information on alignment
and operation of the 2 and 8 Watt RF amplifi er
modules.

The following manual is also required for
alignment of the UT-4D family transmitter.

Radio Service Software Manual: This manual
provides instructions on using the PC-based
Radio Service Software package to perform
Transmitter alignment and frequency and mode
selection. This manual is available as a PDF
fi le on CD that is supplied in the Radio Service
Software and Interface Kit.

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General Information

2

UT-4D400 Transmitter Family Models

There are four distinct models in the UT-4D400 Transmitter family each with different bands of
operation and power outputs. The four models are as follows:

• UT-4D420-2 406-430 MHz band, 0.5-2.0 Watt

• UT-4D420-8 406-430 MHz band, 2.0-8.0 Watt

• UT-4D460-2 450-470 MHz band, 0.5-2.0 Watt

• UT-4D460-8 450-470 MHz band, 2.0-8.0 Watt

The transmitters’ band of operation is determined by select components in the amplifi er.

Performance Specifi cations

General

The following is a general set of specifi cations for the generic UT-4D400 transmitter. Additional
specifi cations, specifi c to individual modules may be found in their respective sub manuals.

Type: MT-4D Series Transmitter.

Family: UT-4 406 - 470 MHz.

Compatibility: MT-2, MT-3 and MT-4 Series Radio Systems, Project 25

interoperable.

Frequency Range: 406 to 430 MHz., 450 to 470 MHz

RF Power Output: 0.5 to 2.0 or 2.0 to 8.0 W Continuous.

Modulation: Analog: 11K0F3E or 16K0F3E (Frequency Modulation).

Project 25: 8K10F1E

System Impedance: 50 Ω; Type N connector.

Duty Cycle: 100%; Continuous operation from -30°C to +60°C.

Emissions: -70 dBc

Transmitter Mismatch Protection: 20:1 VSWR at all phase angles.

Operating Temperature Range: -30˚C to +60˚C.

Operating Humidity: 95% RH (non-condensing) at +25°C.

Operating Voltage: +13.8 Vdc Nominal (range +10 to +17 Vdc),

+9.5 Vdc Regulated.

Transmit Current: 1.7 Amps at 2 Watts RF Power Output,

2.8 Amps at 8 Watts RF Power Output

Front Panel Controls: NORM (repeat mode), OFF, and KEY TX (Tx on).

MIC MODE: ANALOG and DIGITAL.

PTT Activation: Active to ground; Microphone activated;

Front Panel switch: KEY TX

P25 Digital UHF Transmitter Instruction Manual
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General Information

PTT Time-Out-Timer: Programmable from 1 sec. to 8 hrs or infi nity. (Default 5 min.), using

Radio Service Software package.

Channel Spacing: 12.5 kHz or 25 kHz.

Frequency Stability: Standard: ±1.0 ppm, -30°C to +60°C.

Channel Selection: In 5.0 or 6.25 kHz increments selected with Radio Service Software

package.

Standby Current: Transmitter with no encryption modules installed:

Standby ≤ 75 mA
Transmitter with encryption modules installed:
Standby ≤ 105 mA

DOC Type Approval: TBA

FCC Type Acceptance: TBA

3

Audio Specifi cations

Audio Input: Balanced, 600Ω or optional unbalanced input (600 Ω or 15000Ω

selectable input impedance)

Audio Response: Pre-emphasis (6 dB per octave); +1 to -3 dB from 300 Hz to 3 kHz

Audio Deviation Limiting: +/- 2.5 kHz, +/- 5.0 kHz

Audio Distortion: < 3% THD; 1 kHz tone at 1.5 kHz or 3 kHz deviation

Hum and Noise: -34 dB typical

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This Page Intentionally Left Blank

4

Physical Specifi cations

Physical Dimensions: Width: Height: Depth:

7.1 cm (2.8 in) 12.8 cm (5.05 in) 19 cm (7.5 in)

Module Weight: 1.4 kg (3.0 lbs.)

Corrosion Prevention: Anodized aluminum construction. Stainless steel hardware. Gold

plated module connectors.

Module Design: Compact Eurostandard modular design. Plug-in modules mate

with Daniels standard M3 repeater subrack. Subracks / modules
comply with IEEE 1101, DIN 41494 and IEC 297-3 (mechanical size /
modular arrangement).

External Connections: RF Connection: type N connector located on the transmitter module

front panel. Motherboard Connections (Audio, Power, and Control)
are made through a 48 pin, gold plated, type F connector on the rear
of the transmitter module. User connection made through mated
“mother board” assembly of the repeater subrack. Type F standard
connector complies with DIN 41612 Level 2 (200 mating cycles,
4 day 10 ppm SO2 gas test with no functional impairment and no
change in contact resistance). Digital I/O: 8-pin RJ-45

Handle Text Colour: Black

P25 Digital UHF Transmitter Instruction Manual
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THEORY

OF OPERATION

5

P25 Digital UHF Transmitter Instruction Manual

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