TM8260 Installation And Programming Guide TM8000/TM8260/MMA 00041 02 MMA

User Manual: Pdf TM8000/TM8260/MMA-00041-02 TM8260 Installation and Programming Guide

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Page Count: 49

Contents
Preface
Safety Warnings
1 Preparing the Installation
2 Installing a Dual-Radio System
3 Programming the Radio System
4 Quick reference
Appendix A Cross-band Linking, GPS and External Interface Cable
Glossary
Tait General Software Licence Agreement

TM 82 60 mobile

Installation and

Programming Guide

MMA-00041-02

Issue 02

June 2006

2TM8260 Installation and Programming Guide

Contact Information

Tait Radio Communications

Corporate Head Office

Tait Electronics Limited

P.O. Box 1645

Christchurch

New Zealand

For the address and telephone number of regional

offices, refer to the TaitWorld website:

Website: http://www.taitworld.com

Technical Support

For assistance with specific technical issues, contact

Technical Support:

E-mail: support@taitworld.com

Website: http://support.taitworld.com

All information contained in this manual is the property

This manual may not, in whole or in part, be copied,

photocopied, reproduced, translated, stored, or reduced

to any electronic medium or machine-readable form,

without prior written permission from Tait Electronics

Limited.

The word TAIT and the TAIT logo are trademarks of

Tait Electronics Limited.

All trade names referenced are the service mark,

trademark or registered trademark of the respective

manufacturers.

Disclaimer

There are no warranties extended or granted by this

manual. Tait Electronics Limited accepts no

responsibility for damage arising from use of the

information contained in the manual or of the

equipment and software it describes. It is the

responsibility of the user to ensure that use of such

information, equipment and software complies with the

laws, rules and regulations of the applicable

jurisdictions.

Enquiries and Comments

If you have any enquiries regarding this manual, or any

comments, suggestions and notifications of errors,

please contact Technical Support.

Updates of Manual and Equipment

In the interests of improving the performance, reliability

or servicing of the equipment, Tait Electronics Limited

reserves the right to update the equipment or this

manual or both without prior notice.

Intellectual Property Rights

This product may be protected by one or more patents

of Tait Electronics Limited together with their

international equivalents, pending patent applications

and registered trade marks: NZ338097, NZ508054,

NZ508340, NZ508806, NZ508807, NZ509242,

NZ509640, NZ509959, NZ510496, NZ511155,

NZ511421, NZ516280/519742, NZ519118,

NZ519344, NZ520650/537902, NZ521450,

NZ524509, NZ524537, NZ524630, NZ530819,

NZ534475, NZ534692, NZ535471, NZ536945,

NZ537434, NZ534369, NZ522236, NZ524378,

AU2003281447, AU2002235062, AU2004216984,

CA2439018, EU03784706.8, EU02701829.0,

EU04714053.8, GB23865476, GB2386010,

GB0516094.0, GB0516092.4, US09/847322, US60/

613748, US60/539617, US10/520827, US10/468740,

US5,745,840, US10/520827.

To Our European Customers

Tait Electronics Limited is an

environmentally responsible company

which supports waste minimization and

material recovery. The European Union’s

Waste Electrical and Electronic Equipment

Directive requires that this product be disposed of

separately from the general waste stream when its

service life is over. Please be environmentally

responsible and dispose through the original supplier,

your local municipal waste “separate collection” service,

or contact Tait Electronics Limited.

TM8260 Installation and Programming Guide Contents 3

Contents

Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Scope of Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Associated Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Document Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Safety Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

RF Exposure Hazard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Safe Radio Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Interference with Vehicular Electronics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Preparation when Drilling Holes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Vehicles Powered by Liquefied Petroleum Gas. . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Radio Installation in Gas or Fuel tankers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Non-standard Radio Installations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Negative Earth Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1 Preparing the Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1.1 Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1.2 Installation Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1.3 Unpacking and Checking the Equipment for Completeness . . . . . . . . . . . 11

1.4 Installation Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

1.5 Installation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2 Installing a Dual-Radio System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.1 Installing a Basic Dual-Radio System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.2 Advanced Dual-Radio Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

2.3 Checking the Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

3 Programming the Radio System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

3.1 Programming a Dual-Radio System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

3.2 Recommended Dual-Radio Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

3.3 Upgrading Radio Firmware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

3.4 Calibrating the Radio System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

3.5 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

4 Quick reference. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

4 Contents TM8260 Installation and Programming Guide

Appendix A Cross-band Linking, GPS and External Interface Cable . . . . . 39

A.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

A.2 Cross-band Repeater Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

A.3 Connecting to a GPS Device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

A.4 Connecting to the Ignition Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

A.5 Connecting to an External Alert Device. . . . . . . . . . . . . . . . . . . . . . . . . . 43

A.6 Connecting to other External Devices or Signals . . . . . . . . . . . . . . . . . . . 44

A.7 Interface Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Tait General Software Licence Agreement . . . . . . . . . . . . . . . . . . . . . . . . 49

TM8260 Installation and Programming Guide Preface 5

Preface

Scope of Manual

This manual describes the installation and programming of TM8260 dual

mobile radio systems. A dual radio system is where one control head is

connected to two radio bodies.

The installation of accessories is described in the installation instructions

provided with the equipment, and the relevant section in the service

manual.

Associated Documentation

TM8260 User’s Guide (MMA-00040-xx)

TM8200 Programming Application Online Help

TM8100/TM8200 Service Manual (MMA-00005-xx)

Technical notes are published from time to time to describe applications for

Tait products, to provide technical details not included in manuals, and to

offer solutions for any problems that arise.

All available TM8200 product documentation is provided on the CD

supplied with the service kit1. Updates may also be published on the Tait

support website.

Document Conventions

Within this manual, four types of alerts are given to the reader: Warning,

Caution, Important and Note. The following paragraphs illustrate each type

of alert and its associated symbol.

Warning!! This alert is used when there is a potential risk of death

or serious injury.

Caution This alert is used when there is the risk of minor or moderate

injury to people.

Important This alert is used to warn about the risk of equipment

damage or malfunction.

Note This alert is used to highlight information that is required to ensure

procedures are performed correctly.

1. Technical notes are only available in PDF format from the Tait support website.

Consult your nearest Tait Dealer or regional office for more information.

6Preface TM8260 Installation and Programming Guide

Within this manual, the following symbols are used to highlight differences

between the 40W/50W and the 25W radios:

This symbol highlights information that is relevant to 40W/50W radios.

This symbol highlights information that is relevant to 25W radios.

TM8260 Installation and Programming Guide Safety Warnings 7

Safety Warnings

This section contains important information on the safe installation of the

radio system. You must read this information before starting the installation.

You must also read and observe the safety information on radio operation

provided in the user’s guide.

RF Exposure Hazard

To comply with FCC RF exposure limits:

For 40W/50W radio bodies:

■VHF radios must be installed using an antenna mounted centrally on the

vehicle roof, with a gain of 2.15dBi or 5.15dBi.

■UHF radios must be installed using an antenna mounted either centrally

on the roof with a gain of 2.15dBi or 5.65dBi, or centrally mounted on

the trunk with a gain of 5.65dBi.

For 25W radios:

■The radio must be installed using an externally mounted antenna with a

gain of either 2.15dBi or 5.15dBi.

In all cases, an antenna must not be mounted at a location such that any

person or persons can come closer than 35 inches (0.9m) to the antenna.

Safe Radio Mounting

Warning!! Mount the radio securely so that it will not break loose

in the event of a collision. An unsecured radio is

dangerous to the vehicle occupants.

■Mount the radios and the microphone where they will not interfere

with:

■the deployment of passenger airbags

■the vehicle operator controls

■the vehicle operator’s view.

■Do not mount the radio bodies vertically, with the remote interface

facing down. This will violate compliance with the standards UL/CSA/

EN 60950, Safety of Information Technology Equipment.

8 Safety Warnings TM8260 Installation and Programming Guide

Interference with Vehicular Electronics

Warning!! Some vehicular electronic devices may be prone to

malfunction due to the lack of protection from RF

energy when your radio is transmitting.

Examples of vehicular electronic devices that may be affected by RF

energy are:

■electronic fuel injection systems

■electronic anti-skid braking systems

■electronic cruise control systems

■indicators.

If the vehicle contains such equipment, consult the vehicle manufacturer or

dealer to determine whether these electronic circuits will perform normally

when the radio is transmitting.

Preparation when Drilling Holes

Warning!! When drilling holes in the vehicle, check that drilling

at the selected points will not damage existing wiring,

petrol tanks, fuel lines, brake pipes, or battery cables.

Vehicles Powered by Liquefied Petroleum Gas

Warning!! Radio installation in vehicles powered by LPG

(liquefied petroleum gas) with the LPG container in a

sealed-off space within the interior of the vehicle must

conform to the National Fire Protection Association

Standard NFPA 58. This standard states that the radio

equipment installation must meet the following

requirements:

■The space containing the radio equipment shall be isolated by a

seal from the space containing the LPG container and its fitting.

■Outside filling connections shall be used for the LPG container

and its fittings.

■The LPG container space shall be vented to the outside of

the vehicle.

Radio Installation in Gas or Fuel tankers

Special conditions must be observed when installing a radio on gas and fuel

tankers. Consult your radio provider or Tait-accredited service center for

more details.

TM8260 Installation and Programming Guide Safety Warnings 9

Non-standard Radio Installations

The installation U-bracket has been designed so that there is enough airflow

around the radio body to provide cooling.

If a non-standard installation method is used, care must be taken that

sufficient heat can be dissipated from the heatsink fins and the ridged bottom

surface of the radio.

For this to be achieved, there must be a gap of more than 10 mm (3/8 inch)

between the bottom surface of the radio chassis and the mounting surface.

This is illustrated in Figure A.

Figure A Gap between radio chassis and mounting surface

Negative Earth Supply

The radios are designed to operate only in a negative earth system.

10 mm (3/8 in.)

mounting surface

10 Safety Warnings TM8260 Installation and Programming Guide

TM8260 Installation and Programming Guide Preparing the Installation 11

1 Preparing the Installation

This section contains the following information:

■Regulations

■Installation Tools

■Unpacking and Checking the Equipment for Completeness

■Installation Considerations

■Installation Overview.

1.1 Regulations

MPT 1362 Code of

Practice TM8260 mobile radio systems should be installed in accordance with the

MPT 1362 Code of Practice.

Vehicle

Manufacturer’s

Installation

Instructions

Follow your vehicle manufacturer’s instructions for installing mobile radios.

For more information, refer to the vehicle manufacturer’s website or contact

the vehicle manufacturer’s dealer.

1.2 Installation Tools

The following tools are required to install the radio system:

■drill and drill bits

■5mm (3/16 inch) flat-bladed screwdriver

■Torx T-10 screwdriver

■Torx T-20 screwdriver

■Pozidriv screwdriver

■8 mm (5/16 inch) socket

■wire cutters/strippers

■RF connector crimp tool

■fuse crimp tool

■in-line RF power meter capable of measuring forward and reflected

power at the operating frequency of each radio.

1.3 Unpacking and Checking the Equipment for Completeness

To install a dual-radio system (two radio bodies connected to one control

head), you require the following equipment.

■2 x TM8260 radio bodies (for example, TMAB22-B100B and

TMAB22-H600B). The firmware of the radio bodies must be the same

(see “Required Programming Application and Firmware Versions” on

page 31). Each body must also have the SFE (software feature enabling)

key for Multi-Body Support (TMAS016).

12 Preparing the Installation TM8260 Installation and Programming Guide

■2 x body remote interfaces (TMAC31-0T), with hardware subassembly

XMAC31 revision 0021 (or later), and PCB 220-01720-05 (or later).

■2 x installation kits suitable for the radio bodies, for example, the

TMAA03-17 installation kit (40W/50W radios), or TMAA03-01

installation kit (25W radios).

Note Installation kits are also available without the U-bracket included

and with other antenna connector options. Other cradle mounting

arrangements are also available. Consult your nearest Tait Dealer or

regional office for more information.

Warning!! Danger of fire. The radio’s protection mechanisms rely

on the correct fuses on both the negative and positive

power supply leads being present. Failure to fit the

correct fuses may result in fire or damage to the radio.

The correct fuse types are:

■40W/50W radios: 20A fuses (Tait IPN 365-00010-81)

■25W radios: 10A fuses (Tait IPN 365-00010-80).

■TM8200 graphical-display control head (TMAC40-0T), with the same

firmware version as the radio bodies (see Figure 3.2 on page 31), and

hardware subassembly XMAC40 revision 0091 (or later).

■control head remote kit (TMAA03-03), with hardware subassembly

XMAA03-03 revision 0031 (or later), and PCB 220-01721-04 (or later).

■any supported TM8000 microphone, for example, rugged (TMAA02-

01) or keypad (TMAA02-08).

■control head remote cable (TMAA04-01).

■radio connecting cable (TMAA04-03).

■2 x antennas and antenna coaxial cable.

The following equipment is optional, and may need to be ordered separately.

■2 x remote speakers (TMAA10-03).

■cross-band linking, GPS, and external interface cable (TMAA04-06).

■components to connect the radio system to an external alert device.

■components to connect the radio system to an ignition signal.

■GPS antenna/receiver (TMAA05-01) with plate mount (TMAA05-03)

or magnetic mount (TMAA05-04).

1.4 Installation Considerations

Inspect the vehicle and determine the safest and most convenient position

for mounting the radio bodies and control head, and routing the various

cables. The radio bodies must be less than 1.5m (4.9ft.) apart. The control

head must be no further than 6m (19.6ft.) from the connecting radio body.

1. For more information on how the hardware subassembly revision number relates to

your serial number, contact your regional office or Tait Technical Support (see

“Contact Information” on page 2).

TM8260 Installation and Programming Guide Preparing the Installation 13

1.5 Installation Overview

Figure 1.1 summarizes how the components in a TM8260 dual-radio

system are installed. For more detailed instructions, see “Installing a Dual-

Radio System” on page 15.

Figure 1.1 TM8260 installation overview

bexternal speaker jcontrol head

cflying lead connector 1) any supported microphone

dcross-band linking, GPS, and

external interface cable

1! external auxiliary interface

(e.g. external alert device)

eradio body 1@ GPS antenna/receiver

fbody remote interface 1# radio body

gconnector seal 1$ body remote interface with

link J4 removed

hradio connecting cable 1% control head remote cable

icontrol head remote

interface

e1#

To antenna To second antenna

To power supply To power supply

To external I/O 1!

To speaker bTo speaker b

To GPS 1@

To microphone 1)

Optional

Required

14 Preparing the Installation TM8260 Installation and Programming Guide

TM8260 Installation and Programming Guide Installing a Dual-Radio System 15

2 Installing a Dual-Radio System

This section contains the following information:

■Installing a Basic Dual-Radio System

■Advanced Dual-Radio Installation

■Checking the Installation.

2.1 Installing a Basic Dual-Radio System

Before you start, make sure you have all the necessary tools and components.

See page 11 for more information.

To install a basic dual-radio system:

1. Download MAC addresses to all devices in the system. See

“Downloading MAC Addresses” on page 16.

2. Remove link J4 from the radio body interface that will be connected

to the control head. See “Removing Link J4” on page 17.

3. Assemble the body interfaces. See “Assembling the Body Interfaces”

on page 19.

4. Assemble the control-head interface. See “Assembling the Control

Head Interface” on page 20.

5. Mount the control head and radio bodies. See “Mounting the

Control Head and Radio Bodies” on page 21.

6. Install the antennas. See “Installing the Antennas” on page 21.

7. Connect the control head and radio bodies. See “Installing the

Control Head Remote and Radio Connecting Cables” on page 23.

8. Connect the radios to a power source. See “Connecting the Power

Cables to a Power Source” on page 25.

9. Program the radio system. See “Programming a Dual-Radio System”

on page 31.

16 Installing a Dual-Radio System TM8260 Installation and Programming Guide

2.1.1 Downloading MAC Addresses

Every device in a dual-

radio system must have a

system configuration

table (SCT) downloaded,

with unique MAC

(media access control)

addresses (Figure 2.1).

This enables you to read,

program, and upgrade all

devices in the radio

system via the control

head microphone port.

Complete the following steps before installing the remote interfaces and

assembling and mounting the system.

1. From the Programming Application, click Tools > Multiple Device

Configuration.

2. Make sure a table similar to Figure 2.2 is displayed in the dialog.

Note The radio body with the lowest MAC address determines the

foreground radio the first time the system is turned on, and each

subsequent time if the Power-up on Last Active Body check

box is cleared in the programming application.

Either:

■click File > Open, and open the device configuration file for the

system, or

■click Edit > Add Device and define the table.

Important The system configuration table must be downloaded to

devices in the order stated within these steps. If not, then

the control head may receive the same address as a radio

body and you will no longer be able to communicate with

all or part of the system.

Important The entire table must be downloaded to each device, not

just information about the device that the table is intended

for. See Figure 2.1.

Figure 2.2 Example of a system configuration table

Typ e Name MAC Priority

Head (TMAC40) Head 2 2

Body (TMAB22) VHF Radio 1 1

Body (TMAB22) UHF Radio 3 3

Figure 2.1 Devices with SCTs downloaded

Type MAC Priority

TMAC40 2 2

TMAB22 1 1

TMAB22 3 3 Type MAC Priority

TMAC40 2 2

TMAB22 1 1

TMAB22 3 3

Type MAC Priority

TMAC40 2 2

TMAB22 1 1

TMAB22 3 3

TM8260 Installation and Programming Guide Installing a Dual-Radio System 17

3. Connect the control head directly to the radio body that you want to

assign with the highest numerical MAC address value (in the example

table in Figure 2.2, this is the UHF radio), and apply power. See

Figure 2.3.

Important Connect one radio body at a time. Do not attempt to

download MAC addresses if both radio bodies are

connected together and have power applied.

4. Connect the control head microphone port to your PC.

5. Click Radio > Download MAC Address, and download the table

to device TMAB22 with the higher address.

6. Connect the control head directly to the radio body that will have the

lowest numerical MAC address value (in the example table in

Figure 2.2, this is the VHF radio), and apply power. See Figure 2.4.

7. Click Radio > Download MAC Address again, and download the

same table to device TMAB22 with the lower address.

8. Click Radio > Download MAC Address a third time, and

download the same table to the control head (device TMAC40).

9. Check that all red indicators in the table are now green.

2.1.2 Removing Link J4

Every body remote interface (TMAC31-0T) is manufactured, by default,

with a 120Ω termination resistor across the RS485 signal lines. The control

head remote (TMAA03-03) also has this termination.

Figure 2.3 UHF radio body connected

directly to the control head

Figure 2.4 VHF radio body connected

directly to the control head

power

supply

To PC

Control head loom

VHF radio UHF radio

Control head

To power supply

To PC

Control head loom

VHF radio UHF radio

Control head

18 Installing a Dual-Radio System TM8260 Installation and Programming Guide

This termination is required at the ends of an RS485 network. In the case

of a TM8260 dual-radio system, the radio body with the two connections

(to the control head and to the other radio body) is a node on the network

and must not have this termination.

To remove this termination, use your fingernail (or similar) to remove the

jumper (shorting link) J4. Link J4 is located between the two RJ45

connectors (see Figure 2.5), and can be removed without removing the

PCB.

This must only be removed on the body remote interface connected to the

control head (see “Installation Overview” on page 13), and can only be

removed when the interface is separate from the radio body. If the interface

has already been installed, see “Removing the Body Interface” below.

Removing the Body

Interface 1. On the underside of the

radio, insert a 5mm (3/

16in.) flat-bladed

screwdriver between the

body interface and the seal,

in the positions shown

(Figure 2.6).

Insertion points and are

lever points and are indi-

cated on the radio chassis by a dot-dash-dot pattern (•–•).

Caution Take care that the seal is not damaged. Damage to this seal

reduces environmental protection.

2. Use the screwdriver to lift the remote interface off the chassis clip,

then repeat in the other position.

You should now be able to inspect, and if necessary remove, shorting

link J4. It is not necessary to remove the body interface loom or the

earthing tag to remove the link.

Figure 2.5 Location of Link J4

Link J4

RJ45 Connectors

Figure 2.6 Removing the Body Interface

lever point

seal

indication of

lever point

TM8260 Installation and Programming Guide Installing a Dual-Radio System 19

2.1.3 Assembling the Body Interfaces

The following steps show how to connect a body remote interface to a radio

body. Complete these steps for both radio bodies.

Important One remote interface must have link J4 removed. See

“Removing Link J4” on page 17 for more information.

After you install the interface with link J4 removed, make

sure you can identify that radio body when connecting the

cables afterwards.

1. Screw the

earthing tag

onto the left

screw boss on

the radio

chassis, using

the Torx T-10

screw provided.

2. Plug the body-

interface loom

onto the

control-head

connector.

3. Insert the

bottom edge of

the control

head onto the

two clips in the

front of the

radio chassis,

then snap into

place.

20 Installing a Dual-Radio System TM8260 Installation and Programming Guide

2.1.4 Assembling the Control Head Interface

The following steps show how to connect the control head remote interface

to the control head.

1. Undo the two Torx

T-20 screws and

remove the adaptor

flange.

2. Unplug the control-

head loom and discard.

3. Plug the control-head

interface loom into the

connector on the

control head.

4. Use the two Torx T-20

screws from the first

step to fit the control-

head remote interface

to the control head. Be

careful not to damage

the space-frame seal.

TM8260 Installation and Programming Guide Installing a Dual-Radio System 21

2.1.5 Mounting the Control Head and Radio Bodies

Use the bracket and screws provided to mount the control head. The control

head must be no further than 6m (19.6ft.) from the radio body with link J4

removed.

Mount the two radio bodies less than 1.5 metres (4.9ft.) apart using the

preferred mounting method (such as U-brackets, slide-in cradles, or security

brackets).

For more information, refer to the instructions included with the cradle or

bracket installation kit.

2.1.6 Installing the Antennas

A separate antenna for each radio is recommended, rather than a single

antenna configuration (such as a multi-band antenna with a duplexer or

splitter). See “Installation Overview” on page 13. Use ground-independent

antennas if no suitable ground plane is available.

It is important that the antennas are separated as far as possible from each

other to reduce interference. MPT 1362 recommends a separation of at least

¼ wavelength for transmit frequencies below 600 MHz and one wavelength

for transmit frequencies above 600MHz. See Table 2.1 below, and

“Regulations” on page 11.

If dual-transmit will be used for extended periods of time, the antennas must

be separated even further (such as on opposite widths of the vehicle).

Install the antennas according to the antenna manufacturer’s instructions.

Good quality 50Ω coaxial cable must be used, such as RG58 or UR76.

Table 2.1 Approximate frequency to wavelength conversion

Band Name Frequency (MHz) Wavelength (cm) 1/4 Wavelength

(cm)

A4 (lower range) 66 454 114

A4 (upper range) 88 341 85

B1 (lower range) 136 220 55

B1 (upper range) 174 172 43

H6 (lower range) 450 67 17

H6 (upper range) 530 57 14

22 Installing a Dual-Radio System TM8260 Installation and Programming Guide

Important Route the cables in a manner that minimizes:

■coupling into the electronic control systems of

the vehicle

■coupling of electric vehicle systems, such as alternators,

into the radio

Avoid sharp bends in the cables. These distort the cable and

alter its electrical characteristics.

Warning!! RF exposure hazard

To comply with FCC RF exposure limits:

1. Mount the antennas at a location such that no person or persons can

come closer than 35 inches (0.9m) to the antenna.

2. For 40W/50W radios:

■VHF radios must be installed using an antenna mounted centrally

on the vehicle roof, with a gain of 2.15dBi or 5.15dBi.

■UHF radios must be installed using an antenna mounted either

centrally on the roof with a gain of 2.15dBi or 5.65dBi, or

centrally mounted on the trunk with a gain of 5.65dBi.

3. For 25W radios, the radio must be installed using an externally

mounted antenna with a gain of either 2.15dBi or 5.15dBi.

Terminating the

Antenna Cable 1. Run one antenna cable (not supplied) from an antenna to the

mounting location of the matching radio body. Cut the cable to

length, allowing approximately 20 cm (8in.) excess at the radio end.

2. Terminate the free end of the antenna cable with the mini-UHF plug

or BNC plug (supplied) as shown in Figure 2.7.

3. Repeat steps 1 and 2 for the other antenna and matching radio body.

Figure 2.7 Terminating the antenna cable

5/16"

9/16"

5/32"

(4 mm)

(8 mm)

(14 mm)

TM8260 Installation and Programming Guide Installing a Dual-Radio System 23

2.1.7 Installing the Control Head Remote and Radio Connecting Cables

Figure 2.8 contains an overview of the connections between the radio

bodies and the control head. For information on the pins and signals of all

ports, see “Pins and Signals” on page 24.

Detailed Steps

Figure 2.8 Overview of connections between radio bodies and control head

Port A Port B

Body 1 (link J4 fitted) Body 2 (link J4 removed)

CH Port

Port A Port B

Control Head

Radio connecting cable

TMAA04-03 (1.5 m / 4.9 ft.)

Control head remote cable

TMAA04-01 (6 m / 19.6 ft.)

1. Remove all connector

seals.

2. Attach one end of the

control head remote

cable to port B of the

radio body with link J4

removed.

3. Attach the other end of

the cable to the rear

port of the control

head.

Important If a radio body does not have link J4 removed, or you

cannot identify the correct radio body to use, you will need

to disassemble one or both interfaces. See “Removing the

Body Interface” on page 18 for more information.

24 Installing a Dual-Radio System TM8260 Installation and Programming Guide

Pins and Signals The pinouts in Table 2.2 are for the two RJ45 ports on the radio body

interface, and single RJ45 port on the control head interface.

4. Attach one end of the

radio connecting cable

to port A of the body

connected to the

control head, and the

other end to port B of

the second body with

link J4 fitted.

5. Insert a connector seal

in the port with no

cable (port A of the

body with link J4

fitted).

Table 2.2 Remote Interface Ports—Pins and Signals

Pin Name Description

1RX_AUDIO Analogue receive

audio – after volume

control.

213V8 Default setting is a

switched +13V8

line.

3RS485+ RS485 data.

4AGND/PTT Default setting is

analogue ground.

5MIC AUDIO Analogue electret

mic input.

6RS485 RS485 data.

7DGND Digital ground.

8ON/OFF Radio on/off control.

front view

TM8260 Installation and Programming Guide Installing a Dual-Radio System 25

2.1.8 Connecting the Power Cables to a Power Source

To provide power to TM8260 radio systems, you must connect each radio

body separately to a power source or sources. TM8260 radio systems do not

currently support a single lead-to-battery connection.

It is important to ensure that both radio bodies have a solid and secure power

supply. Unexpected behaviour can arise if the power supply to one body

operates at a lower voltage than the other, or is momentarily interrupted, as

might occur with a poorly formed or intermittent wiring termination.

Important Each radio is designed to operate from a nominal 12V

negative ground supply. Each radio may draw up to 15A of

current. Each radio will tolerate a supply voltage range of

10.8V to 16.0V at the radio.

Selecting the Power

Source In passenger vehicles, the radio system is always connected directly to the

battery.

In trucks, where direct connection to the battery is often not possible, each

radio can be connected to a suitable terminal inside the fuse box that is

connected directly to the battery.

24V-to-12V

Converter In vehicles with a supply voltage larger than 16.0V, such as many trucks, it

is essential to provide a suitably rated 24V-to-12V converter. This will

isolate the radios from excessive battery voltage and provide the correct DC

operating conditions. Note that most 24V-to-12V converters already fitted

are not rated sufficiently.

Standby Current When using the ignition signal to turn off the radio system, the standby

current is reduced to <6mA. Otherwise, the standby current is

approximately 60mA.

Connecting the

Power Cable Important Although it is possible to connect the radio system in line

with the vehicle ignition, this is not recommended, as it

may draw too much current and damage the vehicle wiring

and steering column or ignition switch. This may also cause

Table 2.3 Radio body power connector—pins and signals

Pinout Pin Signal name Description Signal type

1 AGND Earth return for radio body power source Ground

2 SPK– External speaker output. Balanced load

configuration

Analog

3 SPK+ External speaker output. Balanced load

configuration

Analog

4 13V8 BATT DC power input for radio body and

control head

Power

rear view

40W/50W radio

1 2 3 4

rear view

25W radio

26 Installing a Dual-Radio System TM8260 Installation and Programming Guide

the supply voltage of the radio to drop below the specified

level.

Important Disconnecting the vehicle’s battery may cause problems

with some electronic equipment, such as vehicle alarms,

engine management systems, and in-car entertainment

systems. Check that the vehicle owner has the necessary

information to make all electronic equipment function

correctly after battery reconnection.

Important If the battery is not disconnected, exercise extreme caution

during the installation and install the fuses only when the

installation is ready to be checked. For more information,

refer to “Checking the Installation” on page 28.

1. Disconnect the vehicle’s battery unless specifically prohibited from

doing so by the customer, vehicle manufacturer, agent, or supplier.

Important Route the cables in a manner that minimizes coupling of

electric vehicle systems such as alternators into the radio.

Important Protect the power cables from engine heat, sharp edges and

from being pinched or crushed.

2. Run the power cable between one radio’s mounting position and the

power source and cut it to length, allowing approximately 20 cm

(8 in.) excess at the radio end.

3. Plug the power cable into the power connector of the radio.

4. Cut the negative (black) and the positive (red) wires where the in-line

fuse holders will be placed (as close to the power source as possible).

Important Do not install the fuses until the installation is ready to be

checked. For more information, refer to “Checking the

Installation” on page 28.

5. Insert each end of the negative wire into each of the fuse crimp-

terminals and crimp them to force the metal contacts onto the wires.

6. Push the two crimp-terminals into the clear plastic fuse cover. Close

the cover while the next steps are completed.

7. Repeat steps 5 and 6 for the positive wire.

8. Connect the negative wire to the battery ground terminal.

9. Connect the positive wire to the battery positive terminal.

10. Repeat steps 2 to 9 for the other radio body.

Important Do not install the fuses until the installation is ready to be

checked. For more information, refer to “Checking the

Installation” on page 28.

TM8260 Installation and Programming Guide Installing a Dual-Radio System 27

Power During Radio

Operation It is important that both radio bodies power on at the same time. If that does

not happen (for example, the Power On Mode is set to Power On in the

programming application and power is applied to each body in sequence)

you must turn the system off then on again via the on/off key. It is not

recommended that you remove or apply power to a single radio body while

operating the radio system.

If power to one radio body is disrupted, you must turn the system off then

on again via the on/off key. If there is no power supply to one radio body

after the radio system is switched on, the other body and control head will

continue to operate as a single radio unit.

Important The ignition signal may fail to turn the remaining radio

body on and off if there is no power to one radio body. In

this situation, the on/off key must be used to continue

operating the radio.

2.2 Advanced Dual-Radio Installation

This section contains the following information about additional features:

■Connecting Remote Speakers

■Connecting the Cross-band Linking, GPS, and External Interface Cable

2.2.1 Connecting Remote Speakers

Remote speakers can be installed with one or both radio bodies, to operate

in parallel with the control head’s existing internal speaker. The remote

speakers can be installed at some distance from the control head, or can be

used to increase the volume of the audio from the internal speaker.

The remote speaker will only sound audio from the radio that it is connected

to. Audio is never fed to a remote speaker from the other radio body. If a

radio is at the background and dual receive is activated, the attached remote

speaker will sound received audio from that radio at a reduced volume. If a

radio is at the foreground, the attached remote speaker will sound received

audio from that radio at full volume, and audible indicators.

The following high-power remote speakers are recommended:

■TMAA10-06 high-power remote speaker for 40W/50W radios

■TMAA10-03 high-power remote speaker for 25W radios.

If a different speaker is used, receptacles for the speaker pins of the power

connector are provided with the installation kit. The installation kit also

contains a flying lead connector that, when installed, enables the speaker to

be easily removed and re-installed as required.

28 Installing a Dual-Radio System TM8260 Installation and Programming Guide

The speaker is connected to pins 2 (SPK–) and 3 (SPK+) of the power

connector. See Table 2.3 on page 25. For more information, refer to the

installation instructions provided with the speaker, or to the relevant section

of the service manual.

2.2.2 Connecting the Cross-band Linking, GPS, and External Interface

Cable

To enable cross-band repeater operation, a linking cable TMAA04-06 must

be attached between the auxiliary connectors of the radio bodies.

Programmable I/O and external PTT 1 settings must also be programmed

using the programming application.

To enable dual-body GPS operation, the linking cable also provides a single-

point connection to a GPS antenna. The GPS connector is the correct type

for the antenna, therefore the adaptor that is supplied with the GPS antenna

is not required. For GPS information to be displayed on the radio, you must

purchase and program the software feature enabling (SFE) key for GPS

Support (TMAS015).

The cable also provides access to certain programmable I/O lines. These

lines can be used to power a TM8260 system on using ignition sense, and

provides an output for a dual-body external alert.

For more information, refer to Appendix A on page 39.

2.3 Checking the Installation

Warning!! Danger of fire. The radio’s protection mechanisms rely

on the correct fuses on both the negative and positive

power supply leads being present. Failure to fit the

correct fuses may result in fire or damage to the radio.

40W/50W radios use 20A fuses; 25W radios use 10A

fuses. For part numbers of the fuses, refer to

“Unpacking and Checking the Equipment for

Completeness” on page 11.

1. Insert the fuses into the power leads. The radio will turn on

automatically at this point.

2. Switch the radio off then on again using the front panel control, but

do not transmit.

3. Connect an in-line power meter between one radio and its antenna.

4. Transmit and measure the forward and reflected power levels.

Less than 4% of the forward power should be reflected. If this is not

achieved, check the installation, including the antenna length.

5. Start reducing the length of the antenna in steps of 0.1 inches to

0.2 inches (2 to 5 mm). Measure the power levels at each step.

TM8260 Installation and Programming Guide Installing a Dual-Radio System 29

Important Some antennas are pre-tuned and must not be cut. Check

with the manufacturers’ instructions.

6. Once the reflected power levels are within tolerance, repeat steps 3, 4

and 5 for the second radio.

7. Test the dual-radio functions.

■Compare the receive functions (such as sensitivity) of one radio,

while the other radio is and is not transmitting. Ensure there is no

significant difference.

■Compare the transmit functions (such as coverage) of one radio,

while the other radio is and is not transmitting.

■Test all other functions, such as dual-receive and cross-band

repeater operation. Check that those functions operate as

expected.

If issues are found, move the radio bodies and/or antennas further

apart and re-test.

30 Installing a Dual-Radio System TM8260 Installation and Programming Guide

TM8260 Installation and Programming Guide Programming the Radio System 31

3 Programming the Radio System

After you have downloaded

MAC addresses and assembled

the system, you can select

individual devices to read or

program. Each time you attempt

to communicate with the radio

system, the Select Device(s)

dialog appears (Figure 3.1).

This section contains the

following information:

■Programming a Dual-Radio

System

■Recommended Dual-Radio Settings

■Upgrading Radio Firmware

■Calibrating the Radio System

■Troubleshooting.

3.1 Programming a Dual-Radio System

The following steps for programming a dual-radio system assume:

■all the devices in the system have supported versions of firmware, and you

have installed supported versions of programming and calibration

software. See Figure 3.2.

■all the devices in the system have unique MAC addresses assigned. See

“Downloading MAC Addresses” on page 16.

■all radio bodies in the system have the optional feature for dual-radio

operation enabled. See “Checking the Optional Feature for Multi-Body

Support” on page 36.

Figure 3.2 Required Programming Application and Firmware Versions

Software or Firmware Type Version Required

TM8200 Programming Application v3.00 or higher

TM8000 Calibration Application v2.91 or higher

Boot Code (radio bodies and control head) v1.04 or higher

Radio Application (radio bodies and control head) v3.01 or higher

FPGA Image (radio bodies and control head) v1.05 or higher

DSP (radio bodies) v3.01 or higher

Figure 3.1 Select Device(s) dialog

32 Programming the Radio System TM8260 Installation and Programming Guide

Step 1—Create a

template file 1. Using the Programming Application, enter the information into the

fields that are common between the radios. See “Recommended

Dual-Radio Settings” on page 33.

2. Click File > Save.

3. Enter a descriptive name for the template, for example,

"TM8260_Master_File".

Step 2—Program

each device in the

system

1. Using the Programming Application, open the template file created

for the radio system.

2. Set the radio’s Band (Global > Specification form).

3. Enter a Radio Name (recommended).

Note The length of the radio name restricts the length of all channel and

group labels. Therefore a three-character radio name such as

"UHF" or "VHF" is recommended, as it will allow group and

channel labels up to 10 characters (such as "Channel 99").

4. Add all information relating to the band selected in step 2, including

channels (Conventional > Channel Setup > Channels form) and

groups (Scan Groups form).

5. Click File > Save As to save the device’s file to disk as a new file.

6. Click Radio > Program.

7. In the Select Device(s) dialog, select the radio body that matches the

Band selected in step 2, and optionally, the control head. See

Figure 3.1.

Note You cannot select more than one of the same device type (for

example, two radio bodies). The Select Device(s) dialog will

automatically select the radio body with the matching operating

band (step 2).

Note The recommended sequence for programming a dual-radio system

is a radio body (TMAB22-) in the first session, then the other body

(TMAB22-) and the head (TMAC40-) together in the second

session.

8. Repeat steps 1 to 7 and program the other radio body and the control

head.

TM8260 Installation and Programming Guide Programming the Radio System 33

3.2 Recommended Dual-Radio Settings

The programming configuration of all devices must be as similar as possible,

with the exception of the operating band, radio name, channels and groups.

If features relating to the user interface (such as function keys, radio menus,

and backlighting), and other features like the security lock are different,

there may be unexpected behaviour when powering on or switching

between the radios.

The following settings are recommended for a dual-radio system. Use this

table when setting up a template file, before programming the system (see

“Programming a Dual-Radio System” on page 31).

Field/Feature Location Comments

Radio Name Global > Specifications

form

The radio name, if used, should be different for

both radio bodies in the system.

Power On Mode Global > Start-up form The power on mode must be the same for all

devices in the system.

Power-up on Last

Active Body

Global > Start-up form This check box must be the same for all devices

in the system.

Reset on Error Global > Start-up form The Reset on Error check box must be the same

for all devices in the system.

Security Lock on Power Up

and Security PIN

Global > Start-up form If the security PIN is enabled, it must be enabled

(and have the same PIN) for all devices in the

system.

PTT fields Global > PTT form PTT settings for both radio bodies are used when

in dual-transmit mode and the radio user presses

the PTT. Care should be taken if programming

PTT behaviour differently between the radio

bodies. PTT settings are typically set the same for

all devices in the system.

Startup (Channel or Group) Conventional >

Conventional UI form

You can program this option for the foreground

radio (the radio body with the lowest MAC

address) to start on a specific channel or group

each time the radio system is turned on. You can

also program this option for the background

radio to default to a specific channel or group

after the radio system is turned on, and the radio

user subsequently switches the active radio or

enables dual receive.

Selcall Stun and Revive Conventional > Selcall >

Control Status form

Selcall stun and revive functionality is currently

not supported for TM8260 radio systems. If the

stun and revive control status types are used, set

the equivalent Rx Processing fields to No for all

devices.

34 Programming the Radio System TM8260 Installation and Programming Guide

Conv Key Settings Conventional > Conv Key

Settings form

Dual body functionality such as dual transmit

and receive, and changing the foreground radio,

can only be accessed via function keys.

Add the Dual Body Mode and Single Body Mode

actions to separate keys, or Dual/Single Body

Mode to a single key.

Add the Switch Active Radio action to a different

function key.

Other Function Key Settings

and the Radio Menu

Conventional >

Conventional Menu form

The radio’s function key settings (Conv Key

Settings form) and menu (Conventional Menu

form) must be the same for all devices in the

system.

Left Selection Key and

Scroll Keys

Conventional > Conv Key

Settings form

If options are programmed for the left selection

key and/or scroll keys, they must be the same for

all devices in the system.

UI Preferences and

Conventional UI

Global > UI Preferences

form, and

Conventional >

Conventional UI form

UI preferences must be configured identically for

all devices in the system. For example,

backlighting, keypress tones, the RSSI icon, and

the default dialling type.

Programmable I/O Programmable I/O form All radio body I/O pins are supported, and all

actions are supported except the output F1 to F4

Key Status. The control head I/O pin (CH_GPIO1)

is limited to outputs only, and those outputs will

always reflect the foreground radio.

The following actions are dependant on the

current mode, and state of the active radio body.

External PTT 1 and 2: The radio body that the

PTT is connected to will transmit, unless

transmission is invalid (for example, that radio is

the background radio in single-body mode).

Toggle F1 and F4 Key LED: The function key

LED will reflect the state of the relevant I/O pin

on the foreground radio.

Radio Ready: The radio at the background in

single-body mode is not considered ready, so will

not activate the output pin.

Note: the cross-band linking, GPS, and external

interface cable requires specific programmable

I/O settings for both radio bodies. For more

information, see Appendix A on page 39.

Trunked MPT Trunked MPT settings are currently not

supported with TM8260 radio systems. Do not

attempt to program these fields or enable the

optional feature for MPT 1327 Trunking.

Field/Feature Location Comments

TM8260 Installation and Programming Guide Programming the Radio System 35

3.3 Upgrading Radio Firmware

The download dialog (from the programming application, click

To o l s > Download) contains a column called NTID. This shows the MAC

(media access control) address for each device. When reporting a radio

system’s configuration, the table will list the various types of firmware for all

devices in the system.

Important Reporting the configuration will also show SCT (System

Configuration Table) files for each device, which must exist

for a radio system. These files are the result of downloading

MAC addresses (see “Downloading MAC Addresses” on

page 16). Do not attempt to delete these files.

When you download firmware to hardware of a particular type (for example,

the target hardware shows as a radio body), it will be sent to all devices in

the system of the same hardware type. The firmware will be downloaded to

each device in sequence.

3.4 Calibrating the Radio System

TM8260 dual radio systems do not support calibration of the radio system

as a whole. The system must first be disassembled to a single head / single

body configuration. If calibration is required after repair, the radio body

must be calibrated outside of the system before re-installation.

3.5 Troubleshooting

If reporting the configuration shows only two devices when three are

expected, or the Select Device(s) dialog does not appear when reading or

programming the radio system:

■Make sure all cables are connected correctly, and securely.

■Make sure power is applied to both radio bodies.

■One or more devices may not have the correct system configuration table

of MAC addresses. Re-download the table to all devices in the system.

See “Downloading MAC Addresses” on page 16.

If an “incorrect band” message appears when attempting to program a radio

body, the band of the selected device to program is different to the band

selected in the programming application. Either change the Band field on

the Specifications form, or select the matching radio body in the Select

Device(s) dialog.

If an “unlicensed feature” message appears in the programming application,

or the LEDs on one or both radio bodies flash on and off when powering

up the system, the optional feature for Multi-Body Support may not be

enabled. To check this, refer to the steps below.

36 Programming the Radio System TM8260 Installation and Programming Guide

Checking the

Optional Feature for

Multi-Body Support

1. Click Tools > Optional Features from the programming

application.

2. Connect the control head directly to one radio body, and to your PC.

See Figure 2.3 or Figure 2.4 on page 17.

3. Click the Read Radio button.

4. Check that the Status is showing Enabled next to Multi-Body

Support.

5. Repeat steps 2 to 4 for the other radio body.

If this feature is showing as Disabled for one or both radios, you will need

obtain and program SFE (software feature enabling) keys. Contact Tait

Electronics Limited for more information.

TM8260 Installation and Programming Guide Quick reference 37

4Quick reference

❏

All components are present and are the correct

versions of hardware and firmware.

See page 11.

❏

The system configuration table is downloaded to

the control head and radio bodies.

See “Downloading MAC

Addresses” on page 16.

❏

Link J4 is removed from the radio body connected

to the control head.

See “Removing Link J4” on

page 17.

❏

The remote interfaces are installed on the radio

bodies and control head.

See page 19 and page 20.

❏

For each body remote interface, the earthing tag

is attached onto the radio chassis.

See page 19.

❏

Antennas are connected to both radio bodies. See page 21.

❏

The cables are attached into the correct ports. See page 23.

❏

There is a solid and secure power supply to both

radio bodies.

See page 25.

❏

The correct fuses are fitted to the power supply

leads.

See page 28.

❏

The radio system is programmed so the user can

access dual-radio features.

See “Programming a Dual-

Radio System” on page 31.

38 Quick reference TM8260 Installation and Programming Guide

TM8260 Installation and Programming Guide 39

Appendix A Cross-band Linking, GPS and External

Interface Cable

This section contains the following information:

■Introduction

■Cross-band Repeater Operation

■Connecting to a GPS Device

■Connecting to the Ignition Signal

■Connecting to an External Alert Device

■Connecting to other External Devices or Signals

■Interface Specification.

A.1 Introduction

The TMAA04-06 cross-band linking,

GPS, and external interface cable is used

to extend the features available with

TM8260 dual radio systems. The cable

connects to both radio’s auxiliary ports

so the radio system can be used as a cross-

band repeater, provides an RJ45 socket

to connect to a GPS antenna, and also

provides an external interface connector.

The external interface can be used to

power a TM8260 dual radio system on

using ignition sense, and also connect to

an external alert device.

Important The radio does not meet the IP54 protection standard once

the auxiliary connector rubber bungs have been removed

and this cable has been installed. Care must be taken when

the radio is being operated in an environment where there

is water, dust or other environmental hazards.

A.2 Cross-band Repeater Operation

Cross-band repeater mode allows a TM8260 dual radio system be used as a

temporary repeater. Any activity received on one radio will be automatically

transmitted on the other radio, and vice versa.

External

Interface

Connector

RJ45 GPS

Socket

Auxiliary

Connectors

40 TM8260 Installation and Programming Guide

A.2.1 Installation

1. Remove the rubber bung that cover the auxiliary connector on each

radio body.

2. Plug an auxiliary connector into the auxiliary port of a radio body.

3. Plug the second auxiliary connector into the auxiliary port of the

other radio body.

Note The cable can be plugged in either way—its orientation has no

impact on radio performance. However, to reduce the cabling

required, orient the cable so the external interface connector and

GPS socket are closest to the device or devices to connect to.

4. Tightly fasten the jackscrew-type locks.

A.2.2 Radio Programming

Programmable I/O

and Audio Settings At a minimum, settings in Table A.1, Table A.2, and Table A.3 must be

programmed for both radios.

Notes: 1. Select Busy Status and Busy Detect to re-transmit any signal.

2. Select Signalling Audio Mute Status and Busy Detect + Subaud to

transmit valid signalling only. This is recommended if the repeater is to

operate on a scan group where member channels require valid

subaudible signalling. Otherwise the radio may re-transmit short bursts

of activity when a channel is busy but not captured due to invalid activity.

Table A.1 Cross-band settings in the Programmable I/O form, Digital tab

Pin Mode Direction Label Action Active Debounce

AUX_GPI1 Conventional Input XBAND_TX Crossband Tx Input Low 10

AUX_GPIO5 Conventional Output BUSY Busy Status1

Low None

Signalling Audio Mute Status2

Table A.2 Cross-band settings in the Programmable I/O form, Audio tab

Pin Tap In Tap In Type Tap I n

Unmute Tap Ou t Tap Out

Typ e Tap Out Unmute

Rx None A-Bypass In On PTT R7 D-Split Busy Detect1

Busy Detect + Subaud2

EPTT1 T5 A-Bypass In On PTT None C-Bypass 0 On PTT

Table A.3 Cross-band settings in the PTT form, External PTT (1) tab

Field Setting

Advanced EPTT1 PTT Transmission Type Voice

Audio Source Audio Tap In

TM8260 Installation and Programming Guide 41

Receive and Transmit

Settings

The cross-band repeater receives signals based on the radio’s squelch (carrier)

mute, and re-transmits signals based on external PTT 1. If programmed to only

re-transmit valid signals, the radio’s signalling mutes are also taken into account,

which are affected by the radio’s monitor function (such as the hookswitch

monitor when the microphone is off the hook). If monitor settings are

programmed, the radio user must not enable monitor (such as having the

microphone off the hook) while entering, or during, cross-band repeater mode.

The transmit timer, if enabled, limits the maximum duration of cross-band

repeater transmissions. If a transmit lockout period is programmed then

further repeater transmissions will also be inhibited until the lockout timer

expires. However, if a valid received signal is present when the lockout timer

expires then the radio does not automatically resume transmission.The

received signal must first drop and return before re-transmission resumes.

Priority scanning also affects the transmit timer during cross-band repeater

transmissions. If a non-priority channel in the group is captured, the radio

will re-transmit that activity and the transmit timer will begin counting

down. However, each time the radio samples the priority channel or

channels there is a brief break in reception, which will cause the transmit

timer to restart.

Squelch override is not compatible with cross-band repeater operation.

Avoid programming this feature to a function key, and consider removing

the menu option.

Transmit Inhibit If both radios are receiving activity when cross-band repeater mode is

activated, the radio system can rapidly cycle between transmit and receive.

Set Tx Inhibit to Busy to prevent this from happening by not allowing the

radio system to transmit when there is another busy signal. An alternative is

to set different debounce times for each radio (such as 10 and 100 ms),

which will separate each radio’s entry into cross-band repeater mode.

If the cross-band repeater is programmed to only re-transmit valid signals,

and one radio is receiving an invalid signal (such as invalid CTCSS), the

mute will stay closed and no re-transmission will occur. However, if the

other radio then receives a valid signal, the radio will attempt to re-broadcast

this over the other signal. Set Tx Inhibit to Busy or Mute to prevent this

re-transmission occurring.

System Timing For the cross-band repeater to operate correctly with other base stations or

repeaters, system timing must be taken into account. If using subaudible

signalling and the transmitter requires a “tail”, then this can be configured

according to Table A.4. During the lead-out delay period, no signalling,

such as CTCSS or DCS, is present.

Table A.4 Transmit tail in the Basic Settings form, Subaudible Signalling tab

Field Setting

CTCSS Settings Lead-Out Delay any duration, up to 1000ms

DCS Settings Lead-Out Delay any duration, up to 1000ms

42 TM8260 Installation and Programming Guide

A.2.3 Operational Testing

1. Enable cross-band repeater mode.

2. On the receiving radio, inject an on-channel RF signal at a level of

-70dBm, modulated to ±3kHz deviation (wide bandwidth channel)

or ±1.5kHz (narrow bandwidth channel), at 1kHz AF.

3. On the transmitting radio, the resulting deviation should be:

■±3kHz (with a tolerance of ±200Hz) on a 25kHz wide

bandwidth channel.

■±1.5kHz (with a tolerance of ±200Hz) on a 12.5kHz narrow

bandwidth channel.

A.3 Connecting to a GPS Device

The cable provides an RJ-45 socket, which is used to connect a TM8260

dual radio system to a GPS device such as a Garmin-16HVS antenna/

receiver (product code TMAA05-01). GPS data is sent from the antenna to

both radios.

A.3.1 Installation

Plug the GPS receiver/antenna directly into the RJ-45 socket. The socket

is the correct type for the antenna, therefore the adaptor that is supplied with

the GPS antenna is not required. For information on antenna mounting,

refer to the instructions provided with your GPS device.

A.3.2 Radio Programming

Program one or both radios with GPS settings as required. For detailed

configuration and programming information contact your local Tait dealer.

A.4 Connecting to the Ignition Signal

The cable’s external interface connector can be used to connect a TM8260

dual radio system to the vehicle’s ignition signal. This will turn the radio

system off when the ignition key is off to avoid draining the battery, and will

turn the radio system on when the ignition key is on.

Note A TMAA04-05 ignition sense kit is available. The kit comprises a

mating plug for the radio’s auxiliary connector and a 13 foot (four

metre) length of cable to connect to the vehicle’s ignition signal.

TM8260 Installation and Programming Guide 43

A.4.1 Installation

Connect pin 4 of the external interface connector (AUX-GPI3) to the

13.8V signal controlled by the vehicle’s ignition key.

Important Make sure the ignition switch and the radio links LK1 and

LK2 are properly configured to reduce the radio's power

consumption. Refer to the TM8200 Service Manual for

more information.

A.4.2 Radio Programming

Program both radios as shown in Table A.5.

A.5 Connecting to an External Alert Device

The cable’s external interface connector can be used to connect a TM8260

dual radio system to an external alert device in the vehicle. This enables both

radios to drive the same external alert device.

A.5.1 Installation

The external alert lines used to connect to an external device are open

collector outputs. Connect pin 9 (radio closest to connector) and pin 10

(radio furthest from connector) of the external interface connector to an

input on the interface to the external alert device. Connect the pins together

to drive the same external alert device. Connect the pins separately to drive

separate external alert devices.

Important The high current sink capability of the radio’s auxiliary lines

cannot be accessed with this cable. That means you cannot

connect directly to an external alert device—an interface to

the external alert (such as a controller box) must be used.

Important The internal pullups normally available from the auxiliary

lines are not available via this cable. If the external alert

requires a logic-type signal on the output lines, the lines

must be pulled up to a suitable voltage level by an external

resistor.

Table A.5 Ignition sense settings in the Programmable I/O form, Digital tab

Pin Mode Direction Label Action Active Debounce

AUX_GPI3 All Input IGN_SENS Power Sense

(Ignition)

High 10

44 TM8260 Installation and Programming Guide

A.5.2 Radio Programming

Program both radios as shown in Table A.6.

A.6 Connecting to other External Devices or Signals

The cable does not currently support any other programmable I/O actions,

or connection to other external devices or signals.

A.7 Interface Specification

The following tables summarize the signals used for all connectors on the

cable, and shows the interfaces between the cable and the radios.

Table A.6 External alert settings in the Programmable I/O form, Digital tab

Pin Mode Direction Label Action Active Debounce

AUX_GPIO6 Conventional Output EXT_ALRT External Alert 1 Low None

Figure A.1 Auxiliary connectors—pins and signals

Pin Signal name Description

2 AUX_GPIO5 busy (output)

3RXD receive data

4 AUX_GPI3 ignition sense

7 AUD_TAP_IN audio tap input

8 +13V8 power supply to GPS device

9 AUX_GPIO6 external alert

12 AUX_GPI1 PTT (input)

13 AUD_TAP_OUT audio tap output

15 AGND ground

rear view

Figure A.2 GPS socket—pins and signals

Pin Signal name Description

1 +13V8 power supply from radio

2 GND ground

3 GND ground

5 GPS_TXD transmit data

front view

TM8260 Installation and Programming Guide 45

Figure A.3 External interface connector—pins and signals

Pin Signal name Description

4 AUX_GPI3 ignition sense

9 AUX_GPIO6 external alert (radio closest to

connector)

10 AUX_GPIO6 external alert (radio furthest from

connector)

15 GND ground

rear view

46 TM8260 Installation and Programming Guide

TM8260 Installation and Programming Guide Glossary 47

Glossary

background radio The radio in a dual-radio system that is not currently showing on the radio

display, or is showing in a smaller font.

control head The device in a radio system that provides the user-interface.

cross-band linking,

GPS, and external

interface cable

A cable used to connect the auxiliary ports of the two radio bodies in a dual-

radio system. The cable enables the radio system to be used as a cross-band

repeater, provides an RJ45 socket to connect to a GPS antenna, and also

provides an external interface connector.

cross-band repeater A mode in a dual-radio system where the system receives on one radio, and

immediately re-transmits that reception on the other radio.

device A component (control head or radio body) in a radio system. A device is

known as target hardware when upgrading radio firmware.

dual body mode The function on a dual-radio system that enables you to turn on dual receive

and dual transmit

dual-radio system A control head connected to two radio bodies.

dual receive A state in a dual-radio system where the system receives on both the

foreground radio and background radio simultaneously.

dual transmit A state in a dual-radio system where the system transmits on both the

foreground radio and background radio simultaneously. Dual transmit

includes dual receive.

foreground radio The radio in a dual-radio system that is currently showing on the radio

display, or showing in a larger font.

MAC address The unique identifier that is assigned to each device in a radio system.

primary radio The radio body in a dual-radio system with the lowest MAC address. The

primary radio is at the foreground each time the system is turned on.

radio A radio body, when connected directly or indirectly with a control head.

radio body The device in a radio system that provides standalone transmit and receive

on a single operating band, and also other functionality such as digital

processing. Also known as a torso.

radio system See dual-radio system.

48 Glossary TM8260 Installation and Programming Guide

single body mode The function on a dual-radio system that enables you to return to single

receive and single transmit.

single receive and

single transmit A state in a dual-radio system where the system transmits and receives on the

foreground radio only.

system configuration

table The table that is downloaded to every device in a radio system. The table

contains information about the system, including all devices, device names,

MAC addresses, and priorities.

TM8260 Installation and Programming Guide Tait General Software Licence Agreement 49

Tait General Software Licence Agreement

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TM8260 Installation And Programming Guide TM8000/TM8260/MMA 00041 02 MMA

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