Page 1
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
Page 2
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
IM23-001
Page 3
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
IM23-001
Page 4
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.
P25 Digital UHF Transmitter Instruction Manual
IM23-001
Page 5
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
IM23-001
Page 6
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
P25 Digital UHF Transmitter Instruction Manual
IM23-001
Page 7
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
IM23-001
Page 8
THEORY
OF OPERATION
5
P25 Digital UHF Transmitter Instruction Manual
IM23-001
Page 9
TRANSMITTER ASSEMBLY
AND ADJUSTMENT
Repair Note
13
The transmitter is mainly made up of surface
mount devices, which should not be removed
or replaced using an ordinary soldering iron.
Removal and replacement of surface mount
components should be performed only with
specifi cally designed surface mount rework
and repair stations complete with ElectroStatic
Discharge (ESD) protection.
When removing Surface Mount Solder Jumpers,
it is recommended to use solder braid in place
of manual vacuum type desoldering tools
when removing jumpers. This will help prevent
damage to the circuit boards.
P25 Digital UHF Transmitter Instruction Manual
IM23-001
Page 10
REPEATER SYSTEM
CONFIGURATION
19
P25 Digital UHF Transmitter Instruction Manual
IM23-001
Page 11
ILLUSTRATIONS AND
SCHEMATICS
Printed Circuit Board Numbering
23
Convention
Daniels Electronics Ltd. has adopted a printed
circuit board (PCB) numbering convention in
which the last two digits of the circuit board
number represent the circuit board version. All
PCB’s manufactured by Daniels Electronics Ltd.
are identifi ed by one of the following numbering
conventions:
PCB number 43-912010
Indicates circuit board version 1.0
PCB number 50002-02
Indicates circuit board version 2
(no decimal version)
P25 Digital UHF Transmitter Instruction Manual
IM23-001
Page 12
Illustrations and Schematics
24
P25 Digital Transmitter Front Panel
P25 TRANSMITTER
ANALOG TRANSMIT
LED
AD
ON / OFF / KEY SWITCH
MIC MODE
MICROPHONE MODE
SELECTION SWITCH
CNTL
BUS
RJ45 CONNECTORS
FREQUENCY (MHz)
422.500
NORM
OFF
KEY TX
ANALOG
DIGITAL
A
B
FACTORY SET
OPERATING
FREQUENCY
DIGITAL TRANSMIT
LED
TRANSMITTER
MODEL IDENTIFIER
TITLE: Digital Transmitter Front Panel
MIC
DANIELS
ELECTRONICS LTD.
MADE IN CANADA
MADE IN CANADA
UT-4D150
DANIELS
ELECTRONICS LTD.
TM
RF OUT
TM
TYPE N
RF OUTPUT JACK
(Antenna)
1
2
3
4
A
11
12
13
14
21
22
23
24
5
6
7
8
9
15
16
25
26
10
17
18
19
20
27
28
29
30
DATE: 23 JUL 2003
DWG No: B0297
P25 Digital UHF Transmitter Instruction Manual
IM23-001
DRAWN BY: Bryan Harper
REV DATE: -
Page 13
P25 Digital Transmitter Electrical Parts List
31
PARTS LISTS
Ref
Desig Description Part Number
P25 Digital UHF Transmitter Instruction Manual
IM23-001
Page 14
Revision Date ECO Description
37
REVISION HISTORY
P25 Digital UHF Transmitter Instruction Manual
IM23-001
Page 15
UHF AMPLIFIER
INSTRUCTION MANUAL
UT-3 / UT-4 406-512 MHZ
Covers Models:
A23-UPA420-02 A23-UPA420-08
A23-UPA460-02 A23-UPA460-08
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.
IM23-UT400AMP
1-1-0
Aug 2003
Daniels Electronics Ltd.
Victoria, BC
PRINTED IN CANADA
Page 16
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
UHF Amplifi er Instruction Manual
IM23-UT400AMP
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.
Page 17
RF Exposure Warning
Exposure to radio frequency (RF) energy has been identifi ed as a potential environmental factor that must be
considered before a radio transmitter can be authorized or licensed. The FCC has therefore developed maximum
permissible exposure (MPE) limits for fi eld strength and power density, listed in FCC 47 CFR § 1.1310. The
FCC has furthermore determined that determination of compliance with these exposure limits, and preparation
of an Environmental Assessment (EA) if the limits are exceeded, is necessary only for facilities, operations and
transmitters that fall into certain risk categories, listed in FCC 47 CFR § 1.1307 (b), Table 1. All other facilities,
operations and transmitters are categorically excluded from making such studies or preparing an EA, except as
indicated in FCC 47 CFR §§ 1.1307 (c) and (d).
Revised FCC OET Bulletin 65 (Edition 97-01) provides assistance in determining whether a proposed or existing
transmitting facility, operation or device complies with RF exposure limits. In accordance with OET Bulletin 65
and FCC 47 CFR § 1.1307 (b), this Daniels Electronics Ltd. transmitter is categorically excluded from routine
evaluation or preparing an EA for RF emissions and this exclusion is suffi cient basis for assuming compliance
with FCC MPE limits. This exclusion is subject to the limits specifi ed in FCC 47 CFR §§ 1.1307 (b) and 1.1310.
Daniels Electronics Ltd. has no reason to believe that this excluded transmitter encompasses exceptional
characteristics that could cause non-compliance.
Notes: • The FCC’s exposure guidelines constitute exposure limits, not emission limits. They are relevant to
locations that are accessible to workers or members of the public. Such access can be restricted or
controlled by appropriate means (i.e. fences, warning signs, etc.).
• The FCC’s limits apply cumulatively to all sources of RF emissions affecting a given site. Sites
exceeding these limits are subject to an EA and must provide test reports indicating compliance.
iii
RF Safety Guidelines and Information
Base and Repeater radio transmitters are designed to generate and radiate RF energy by means of an external
antenna, typically mounted at a signifi cant height above ground to provide adequate signal coverage. The
following antenna installation guidelines are extracted from Appendix A to OET Bulletin 65 and must be adhered
to in order to ensure RF exposure compliance:
Non-building-mounted Antennas:
Height above ground level to lowest point of antenna ≥ 10 m or
Power ≤ 1000W ERP (1640 W EIRP)
Building-mounted Antennas:
Power ≤ 1000 W ERP (1640 W EIRP)
The following RF Safety Guidelines should be observed when working in or around transmitter sites:
• Do not work on or around any transmitting antenna while RF power is applied.
• Before working on an antenna, disable the appropriate transmitter and ensure a
“DO NOT USE” or similar sign is placed on or near the PTT or key-up control.
• Assume all antennas are active unless specifi cally indicated otherwise.
• Never operate a transmitter with the cover removed.
• Ensure all personnel entering a transmitter site have electromagnetic energy awareness
training.
For more information on RF energy exposure and compliance, please refer to the following:
[1] FCC Code of Regulations; 47 CFR §§ 1.1307 and 1.1310.
[2] FCC OET Bulletin 65, Edition 97-01, “Evaluating Compliance with FCC Guidelines for
Human Exposure to Radiofrequency Electromagnetic Fields”.
[3] http://www.fcc.gov/oet/rfsafety/
UHF Amplifi er Instruction Manual
IM23-UT400AMP
Page 18
Contents
General Information ...............................................................1
Introduction ................................................................................................ 1
Theory of Operation ...............................................................3
Amplifi er Operation ....................................................................................3
Power Requirements .................................................................................4
RF Circuitry ................................................................................................4
UT-3/400 Lowpass Filter................................................................................. 4
Power Control Circuitry................................................................................... 4
Power Sensing Circuitry ................................................................................. 4
Output Power Sense ...................................................................................... 5
VSWR Sense.................................................................................................. 5
VSWR Overload ............................................................................................. 5
UT-3/400 Amplifi er Alignment.................................................7
General ...................................................................................................... 7
Repair Note................................................................................................ 7
Recommended Test Equipment List ..........................................................8
Standard Factory Settings and Jumper Confi guration ............................... 8
UT-3/400 Amplifi er Alignment..................................................................... 8
UT-3/400 Amplifi er Adjustment ....................................................................... 9
General Set-Up............................................................................................... 9
Output Power Alarm (Forward Power).......................................................... 10
Output Power................................................................................................ 10
Antenna VSWR Alarm (Reverse Power) ....................................................... 11
Procedure Verifi cation ...................................................................................11
v
Illustrations and Schematics ................................................ 13
UT-3/400 UHF Amplifi er Component Layout............................................ 14
UT-3/400 UHF Amplifi er Schematic Diagram........................................... 15
UT-3/400 Amplifi er Low Pass Filter Component Layout .......................... 16
UT-3/400 Amplifi er Low Pass Filter Schematic Diagram ......................... 16
Parts Lists ............................................................................ 17
Electrical Parts List .................................................................................. 17
Mechanical Parts List............................................................................... 20
Revsion History.................................................................... 21
UHF Amplifi er Instruction Manual
IM23-UT400AMP
Page 19
Introduction
1
GENERAL
INFORMATION
The UT-3/400 Amplifi er provides the fi nal stage
of RF amplifi cation and fi ltering for the entire
UHF Transmitter UT-3 and UT-4 406 -512 MHz
family. The amplifi er has four distinct frequency
ranges: 406 to 430 MHz, 450 to 470 MHz, 470
to 490 MHz and 490 to 512 MHz as well as two
distinct output power ranges: 0.5 to 2.0 Watts
and 2.0 to 8.0 Watts. The UT-3/400 Amplifi er
is housed in a machined aluminum case that
ensures optimum RF shielding, provides a good
ground, and also acts as a heatsink.
Additionally, the UT-3/400 Amplifi er is equipped
with output power and VSWR sensing lines that
can be individually confi gured as open collector
or linear outputs. The internal VSWR sensor
protects the amplifi er from high antenna VSWR
by approximately halving the amplifi er’s RF gain
when a VSWR overload condition is present.
The UT-3/400 Lowpass Filter Board provides
output fi ltering for the UT-3/400 Amplifi er. The
lowpass fi lter assembly is mounted in a separate
compartment of the amplifi er case in order to
provided maximum attenuation of harmonic and
other spurious signals.
UHF Amplifi er Instruction Manual
IM23-UT400AMP
Page 20
General Information
2
Performance Specifi cations
Type: MT-3 series UHF Amplifi er module
Compatibility: MT-3 series Transmitter Main Board
MT-4 series Digital Transmitter Main Board
Frequency Range: 406 to 430 MHz, 450 to 470 MHz,
470 to 490 MHz, 490 to 512 MHz
RF Power Output: adjustable 0.5 to 2.0 Watts or 2.0 to 8.0 Watts
RF power Input: nominal level adjustable from 0 dBm to +5 dBm,
held within +/- 2 dB of nominal.
Ouput Impedance and VSWR: 50 Ω, Type N connector; 3:1 max. VSWR.
Input /Output Isolation: > 60 dB
Duty Cycle: 100%: Continuous operation from -40˚ C to +60˚C.
Harmonic Emissions: Less than -90 dBc .
Transmitter Mismatch Protection: 20:1 VSWR at all phase angles.
Transmitter Alarm: Forward power sense and reverse VSWR;
- open collector output (separate or ‘OR’ed confi guration);
- linear output (separate lines only).
Operating Temperature Range: -30˚ C to +60˚ C, optional -40˚ C temperature test.
Operating Humidity: 95% RH (non-condensing) at +25˚ C.
Operating Voltage: +13.8 Vdc Nominal (range +11 to +16 Vdc),
+9.5 Vdc Regulated.
Amplifi er Standby Current: less than 1.0 mA.
Amplifi er Enable: Active to ground.
Amplifi er Enable Response: typically overdamped, rising to within 90% of full power within 5 msec;
maximum (underdamped) overshoot of 30%.
UHF Amplifi er Instruction Manual
IM23-UT400AMP
Page 21
THEORY
OF OPERATION
3
UHF Amplifi er Instruction Manual
IM23-UT400AMP
Page 22
UT-3/400 AMPLIFIER
Repair Note
7
ALIGNMENT
The UT-3/400 Transmitter is mainly made up
of surface mount devices which should not be
removed or replaced using an ordinary soldering
iron. Removal and replacement of surface
mount components should be performed only
with specifi cally designed surface mount rework
and repair stations complete with Electrostatic
Dissipative (ESD) protection.
When removing Surface Mount Solder Jumpers,
it is recommended to use solder braid in place
of manual vacuum type desoldering tools
when removing jumpers. This will help prevent
damage to the circuit boards.
UHF Amplifi er Instruction Manual
IM23-UT400AMP
Page 23
ILLUSTRATIONS
AND SCHEMATICS
Printed Circuit Board Numbering
13
Convention
Daniels Electronics Ltd. has adopted a printed
circuit board (PCB) numbering convention in
which the last two digits of the circuit board
number represent the circuit board version. All
PCB’s manufactured by Daniels Electronics Ltd.
are identifi ed by one of the following numbering
conventions:
PCB number 43-912010
Indicates circuit board version 1.0
PCB number 50002-02
Indicates circuit board version 2
(no decimal version)
UHF Amplifi er Instruction Manual
IM23-UT400AMP
Page 24
UT-3/400 Amplifi er Electrical Parts List
17
PARTS LISTS
Ref
Desig Description Part Number
UHF Amplifi er Instruction Manual
IM23-UT400AMP
Page 25
Revision Date ECO Description
21
REVSION HISTORY
UHF Amplifi er Instruction Manual
IM23-UT400AMP
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