Tait TM8250 User manual

March 2004 © Tait Electronics Ltd Tait general software licence agreement 1
Tait general software licence agreement
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2Tait general software licence agreement
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About this guide 3
About this guide
This user’s guide provides information about the TM8250
and TM8255 mobile radios and is divided into two parts.
■Part A explains how the TM8255 radio operates. The
TM8250 radio has a control head without user controls, so
no TM8250 operating information is needed.
■Part B outlines the installation procedure for both TM8250
and TM8255 radios and describes the pin allocations of the
two programming connectors on the TM8250 control head.
Important safety information
This user’s guide also contains important safety information
about using and installing TM8250 and TM8255 radios.
Refer to page 11 for user safety and compliance instructions
and page 30 for installation safety instructions.
Alert notices
Within this guide, four types of alerts are given to the reader:
warning, caution, important and note. The following para-
graphs illustrate each type of alert and its associated symbol.
Warning: There is a potential risk of death or serious injury.
Caution: There is the risk of minor or moderate injury
to people.
Important: There is a risk of equipment damage or malfunction.
Note: This highlights information that is required to ensure
that procedures are performed correctly.
Updating this guide
In the interests of improving the performance, reliability or
servicing of the equipment, Tait Electronics Ltd reserves the
right to update both the equipment or this user’s guide,
without prior notice.

4About this guide

Your radio’s settings
Use the following table to list your radio’s programmed settings.
Frequently used channels
Function key settings
quick access menu:
ID Description ID Description

scroll keys
on/off key
volume control
microphone socket
PTT key (press-to-talk)
red
LCD (liquid crystal display) speaker
green
amber
microphone
radio status LEDs
function keys 1 to 4 left selection key right selection key

Navigating your radio’s menus
Main menu: conventional mode
Note: Only menus associated with features programmed on your radio will be available.
.

Radio operation 9
Part 1: Radio operation
Tait general software licence agreement ................................... 1
About this guide .......................................................................... 3
Important safety information ....................................................................... 3
Alert notices ............................................................................................... 3
Updating this guide .................................................................................... 3
Your radio’s settings .................................................................... 5
Navigating your radio’s menus ................................................... 7
Safety and compliance warnings .............................................. 11
Radio frequency exposure information ...................................................... 11
Using this radio .................................................................................. 11
Controlling your exposure to RF energy ..................................................... 11
Compliance with RF energy exposure standards ........................................ 12
Warning: Safe radio operation .................................................................. 13
Caution: EN 60950 requirements .............................................................. 13
Caution: High temperatures ...................................................................... 13
Important: Radio protection ...................................................................... 13
Getting started ........................................................................... 14
Radio controls .......................................................................................... 14
Radio indicators ........................................................................................ 16
Radio display ...................................................................................... 16
Radio display icons ............................................................................. 17
LED indicators .................................................................................... 18
Audible tones ..................................................................................... 18
Basic operation ........................................................................... 19
Turning the radio on and off ..................................................................... 19
Entering your PIN ..................................................................................... 19
Adjusting the speaker volume ................................................................... 19
Using the radio menu ............................................................................... 19
Quick access menu ............................................................................. 20
Selecting a channel or group ..................................................................... 20
Making a call ........................................................................................... 20
Making a call on a conventional network ............................................ 20
Making a call on an MPT trunked network .......................................... 21
Transmit timer .................................................................................... 21
Receiving a call ......................................................................................... 21

10 Radio operation
Changing networks .................................................................................. 22
What you hear on a channel ..................................................................... 22
Signalling mute .................................................................................. 23
Squelch .............................................................................................. 23
Checking that a channel is clear ................................................................ 23
Activating monitor using the monitor function key ............................... 23
Activating monitor using the menu ..................................................... 24
Troubleshooting .........................................................................25
When your radio won’t turn on ................................................................. 25
Removing the radio from the vehicle ......................................................... 25
Audible tones ........................................................................................... 26
Notes ............................................................................................28

Safety and compliance warnings 11
Safety and compliance warnings
Radio frequency exposure information
For your own safety and to ensure you comply with the
Federal Communication Commission’s (FCC) radio
frequency (RF) exposure guidelines, please read the following
information before using this radio.
Using this radio
You should use this radio only for work-related purposes (it is
not authorized for any other use) and if you are fully aware
of, and can exercise control over, your exposure to RF energy.
To prevent exceeding FCC RF exposure limits, you must
control the amount and duration of RF that you and other
people are exposed to.
It is also important that you:
■Do not remove the RF Exposure label from the radio.
■Ensure this RF exposure information accompanies the
radio when it is transferred to other users.
■Do not use the radio if you do not adhere to the guide-
lines on controlling your exposure to RF.
Controlling your exposure to RF energy
This radio emits radio frequency (RF) energy or radio waves
primarily when calls are received and made. RF is a form of
electromagnetic energy (as is sunlight), and there are recom-
mended levels of maximum RF exposure.
To control your exposure to RF and comply with the maxi-
mum exposure limits for occupational/controlled environ-
ments, follow these guidelines:
■Do not talk (transmit) on the radio more than the rated
transmit duty cycle. This is important because the radio
radiates more energy when it is transmitting than when
it is receiving.

12 Safety and compliance warnings
■While you are transmitting (talking or sending data) on
the radio, you must ensure that there is always a distance
of 0.9m (35 inches) between people and the antenna.
This is the minimum safe distance.
■Use the radio only with Tait-approved antennas and
attachments, and make only authorized modifications to
the antenna otherwise you could damage the radio and
violate FCC regulations.
For more information on what RF energy is and how to
control your exposure to it, visit the FCC website at http://
www.fcc.gov/oet/rfsafety/rf-faqs.html.
Compliance with RF energy exposure standards
This two-way radio complies with these RF energy exposure
standards and guidelines:
■United States Federal Communications Commission,
Code of Federal Regulations; 47 CFR part 2 subpart J
■American National Standards Institute (ANSI) / Institute
of Electrical and Electronic Engineers (IEEE) C95. 1-1992
■Institute of Electrical and Electronic Engineers (IEEE)
C95.1-1999 Edition.
This radio complies with the IEEE (FCC) and ICNIRP exposure
limits for occupational/controlled RF exposure environments
at operating duty factors of up to 50% talk to 50% listen.

Safety and compliance warnings 13
Warning: Safe radio operation
■Switch the radio off at petrol filling stations
or near flammable liquids or gases.
■Switch the radio off in the vicinity of explo-
sive devices and blasting zones.
■Using a handheld microphone or a radio while
driving a vehicle may violate the laws and legis-
lation that apply in your country or state. Please
check the vehicle regulations in your area.
Caution: EN 60950 requirements
This radio complies with the European Union standard
EN 60950 when operated up to the rated 33% duty cycle of
two minutes transmit and four minutes receive, and with
ambient temperatures of 30°C or lower.
Operation outside these limits may cause the external temper-
ature of the radio to rise higher than this standard permits.
Caution: High temperatures
The bottom surface of the radio and the heatsink fins can
become hot during prolonged operation. Do not touch these
parts of the radio.
Important: Radio protection
Always remove the fuses from the radio power cable before
charging the vehicle battery, connecting a second battery or
using power from another vehicle (e.g. when “jump-
starting”the vehicle).

14 Getting started
Getting started
This section provides a brief description of your radio’s
basic operation. If you need further information, contact
your radio provider.
Radio controls
The radio controls are the PTT key, volume control, on/off key,
scroll keys, selection keys and function keys. Some keys may
have functions assigned to both short and long key presses:
■a short key press is defined as less than one second, and
■a long key press is more than one second.
The radio controls and their functions are summarized in the
diagram and table on the following page.

Getting started 15
scroll keys
on/off key
volume
control
microphone
socket
PTT key
(press-to-talk)
red
LCD
(liquid crystal
display) speaker
green
amber
microphone
radio status LEDs
function keys
1 to 4 left selection key right selection key
Symbol Name Function
PTT press and hold to transmit and release
to listen
MPT mode: initiates a call from the idle state
volume control rotate to change the speaker volume
power key turn the radio on or off with a long press
left selection key action determined by the text above the left
selection key
right selection key action determined by the text above the right
selection key
scroll keys scroll up and down through a list of menu
options or scroll left and right in messages, or
access the lists of channels or preset calls
function keys
1, 2, 3 and 4
function keys with programmed options

16 Getting started
Radio indicators
The radio display, LED indicators and the radio’s audible
tones all combine to give you information about the state
of your radio.
The most common operation of the radio display and indica-
tors is described in the following sections.
Note: The way these indicators behave may be
affected by the way your radio is programmed.
Radio display
The messages and icons you see in your radio display
depends upon the mode in which your radio is operating.
Also, your radio may be programmed to display programmed
information on start-up, such as your network identity.
The following diagrams show two typical displays, one of a
radio operating in conventional mode and the other in
MPT trunked mode.
conventional
mode display
MPT trunked
mode display
scrolling icon
scrolling icon
left selection
key text
right selection
key text
radio display
icons
radio display
icons

Getting started 17
Radio display icons
Icon Meaning
RSSI (received signal strength indicator): the
more bars on the indicator, the stronger the
signal being received by your radio.
MPT network available: your radio has access to
an MPT network
flashing: your radio is attempting to access
an MPT network
transmit: your radio is transmitting
low-power transmit: your radio is transmitting
on low-power
scanning: your radio is monitoring a group of
channels for activity
monitor or squelch override: monitor or squelch
override is active
quiet mode: you are in quiet mode and your
radio keypress tones and confidence tones have
been turned off
scrolling: you can use the scroll keys or
to move through a list

18 Getting started
LED indicators
Audible tones
Note: If quiet or silent mode has been turned on, you
will not hear any audible tones.
Refer to page 26 for a description of other tones you may hear.
LED Meaning
red
(transmit)
glowing: your radio is transmitting
flashing: your transmit timer is about to expire
green
(receive)
glowing: you are receiving
flashing: you have received a call
amber
(scanning or
network)
glowing: your radio is scanning a group of chan-
nels for activity (conventional mode) or network
service is available (MPT trunked mode)
flashing: your radio has detected activity on
a channel, and has halted on this channel
(conventional mode)
flashing fast: in trunked mode, there is no
network service available
Tone type
Meaning
two short beeps radio turned on: the radio is powered on
and ready to use
one short beep radio turned off: the radio is powered off
one short beep valid keypress: the action you have
attempted is permitted
one long, low-
pitched beep
invalid keypress: the action you have
attempted is not permitted
one long, low-
pitched beep
transmission inhibited: you have attempted
to transmit but for some reason transmis-
sion is not permitted at this time

Basic operation 19
Basic operation
This section describes the basic operation of your radio, includ-
ing turning the radio on and off and adjusting the volume.
Turning the radio on and off
A long press of the on/off key turns the radio either on or
off. When the radio is first turned on, the red, green and
amber LEDs flash briefly and the radio gives two short beeps.
Entering your PIN
You may need to enter a PIN (personal identification number)
before you can use your radio. If the message radio locked
enter pin is displayed, enter your assigned PIN.
Once you have entered you PIN correctly, the pin accepted
message appears and normal operation is now possible.
If you do not know your PIN or you receive the incorrect pin
message after entering your PIN, consult your radio provider.
Adjusting the speaker volume
Rotate the volume control clockwise to increase the
speaker volume and counterclockwise to decrease the
volume. The volume control also changes the volume level
of the radio’s audible indicators.
Using the radio menu
Whenever Menu appears above
the right selection key, press the
right selection key to enter the
main menu.
Use the scroll keys or to
move through the list of menus.
When the menu you want is highlighted, press Select
using the right selection key and the menu you have
chosen is displayed.