This legal document is an Agreement between
you (the “Licensee”) and Tait Electronics
Limited (“Tait”). By using any of the Software
or Firmware items prior-installed in the
related Tait product, included on this CD or
downloaded from the Tait website,
(hereinafter referred to as “the Software or
Firmware”) you agree to be bound by the
terms of this Agreement. If you do not agree
to the terms of this Agreement, do not install
and use any of the Software or Firmware.
If you install and use any of the Software or
Firmware that will be deemed to be
acceptance of the terms of this licence
agreement.
The terms of this agreement shall apply
subject only to any express written terms of
agreement to the contrary between Tait and
the Licensee.
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USEOFTHEPROGRAMONTHESINGLEMACHINE
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AND / OR
This manual contains information on installing, operating and servicing
accessory products for TM8100 radios.
Enquiries and Comments
If you have any enquiries regarding this manual, or any comments,
suggestions and notifications of errors, please contact Technical Support
(refer to “Contact Information” on page 2).
Updates of Manual and Equipment
In the interests of improving the performance, reliability or servicing of the
equipment, Tait Electronics Ltd reserves the right to update the equipment
or this manual or both without prior notice.
Copyright
All information contained in this manual is the property of
Tait Electronics Ltd. All rights are reserved. 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 Ltd.
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 Ltd 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.
MM8100-02-00-812 TM8100 Mobile Radio Service Manual
All available TM8100 product documentation is provided on the
TM8100 Product Support CD, product code TMAA20-01. Updates may
also be published on the Tait support website.
Publication Record
VersionPublication DateDescription
1.00September 2003first release
2.00December 2003added information about TMAA01-01 lineinterface board, TMAA02-06 support kit for
concealed and dynamic microphones,
TMAA10-02 handset and TMAA10-03 highpower remote speaker
Alert Notices
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.
CautionThis alert is used when there is the risk of minor or
moderate injury to people.
ImportantThis alert is used to warn about the risk of equipment dam-
age or malfunction.
NoteThis alert is used to highlight information that is required to
This chapter contains general information about safety and servicing
procedures when working with TM8000 radios. While many TM8100
accessories plug into external radio interfaces, some accessories are fitted
inside the radio. Refer to the TM8100 Service Manual for detailed
disassembly and reassembly information
1.1Personal Safety
Explosive Environments
Warning!!Do not operate equipment near electrical blast-
ing caps or in an explosive atmosphere. Operating the equipment in these environments is a
definite safety hazard.
Proximity to RF Transmissions
Do not operate the transmitter when someone is standing within 0.9m (35
inches) of the antenna. Do not operate the transmitter unless you have
checked that all RF connectors are secure.
High Temperatures
The bottom surface of the radio and heatsink fins can become hot during
prolonged operation. Do not touch these parts of the radio.
1.2Equipment Safety
ESD Precautions
ImportantThis equipment contains devices which are susceptible to
damage from static discharges. You must handle these
devices carefully and according to the procedures described
in the manufacturers’ data books.
Purchase an antistatic bench kit from a reputable manufacturer and install
and test it according to the manufacturer’s instructions. Figure 1.1 shows a
typical antistatic bench set-up.
You can obtain further information on antistatic precautions and the dangers
of electrostatic discharge (ESD) from standards such as ESD S4.1-1997
(revised) or BS EN 100015-4 1994. The Electrostatic Discharge Association
website is http://www.esda.org/.
Figure 1.1Typical antistatic bench set-up
to building ground or
mains ground via
1MΩ series resistor
Antenna Load
The TM8100 radio has been designed to operate safely under a wide range
of antenna loading conditions. However, the radio should always be
operated with a suitable load to prevent damage to the transmitter output
power stage.
1.3Identifying Screw Types
conductive wrist strap
dissipative rubber
bench mat
Torx Recess Head Screws
Torx recess head screws are the standard type of screw used in TM8100
equipment, although Pozidriv head screws are also used in a few special
applications.
The Torx recess head has the advantage of improved screwdriver tip
location, reducing the chances of screw head damage caused by the driver
tip rotating within the recess. In addition, using a ball-tip Torx screwdriver
allows you to drive a Torx head screw with the driver on a slight angle,
which can be useful in situations where access is restricted.
It is important that you use the correct Torx screwdriver tip:
■ M2.5 screws - T8
■ M3 screws - T10
■ M4 screws - T20.
14Safety and Servicing InformationTM8100 Mobile Radio Accessories Manual
Figure 1.2 below shows a typical Torx recess head screw (the actual hardware
may differ slightly from this illustration due to variations in manufacturing
techniques).
Figure 1.2Identifying Torx screws
“star” shaped recess with
six internal notches
Allen 4-40 UNC thread screws are used in some locations in the TM8100
radio and cannot be interchanged with M3 screws.
Pozidriv and Philips Screws
Both Pozidriv and Philips head screws are used on certain TM8100
accessories. It is important that you use the correct type and size screwdriver
to avoid damaging screw heads.
It is particularly important that you do not use Philips screwdrivers on
Pozidriv screw heads as the tapered driving flutes of the Philips screwdriver
do not engage correctly with the parallel-sided slots in the Pozidriv screw
head. This can result in considerable damage to the screw head if the
screwdriver tip turns inside the recess.
NoteIf you find you need excessive downwards pressure to keep the
screwdriver tip in the Pozidriv screw head, you are probably using
the wrong type or size screwdriver.
Figure 1.3 on the following page shows the main differences between typical
Pozidriv and Philips screw heads and screwdriver tips (actual hardware may
differ slightly from these illustrations due to variations in manufacturing
techniques).
Figure 1.3Identifying Pozidriv and Philips screws and screwdrivers
Pozidriv
internal notches
“star” markings
between slots
slots with
parallel sides
driving flutes with
parallel sides
ridges between
driving flutes
Philips
no special
markings
slots with
tapered sides
driving flutes with
tapered sides
1.4Regulatory Information
Any modifications you make to this equipment which are not authorised by
Tait Electronics Ltd may invalidate your compliance authority’s approval to
operate the equipment.
1.5PCB Information
All PCBs are identified by a unique 10 digit IPN (internal part number)
which is printed onto the PCB (usually on the top side), as shown in the
example below:
The last two digits of this number define the issue status, which starts at 01
and increments through 02,03, 04, etc. as the PCB is updated. If the PCB
information contained in a section of this manual does not match the PCB
number printed on your board, contact Technical Support (refer to
“Contact Information” on page 2).
16Safety and Servicing InformationTM8100 Mobile Radio Accessories Manual
The TMAA01-01 line-interface board provides both audio and digital
interfaces for a variety of systems. The interfaces available are:
■ an isolated 600Ω audio interface which is capable of both
simplex operation on a two-wire system, or duplex operation on
a four-wire system
■ a keying interface which allows for two-wire keying or single
line bi-directional keying
■ a variable delay timer
■ a logic sense control.
The line-interface board fits inside the radio in the options cavity
and is connected to the main PCB by the internal options loom.
The high-density 15-way D-range connector mounted on the lineinterface board fits through the external options connector hole
provided in the radio chassis.
ImportantThe radio does not meet the IP54 protec-
tion standard once a line-interface board
has been installed unless the external
options cover seal is installed.
2.1Operation
One of the control head function keys may be programmed to toggle the
line-interface board on and off. When the function key LED is glowing,
the line-interface board is on and when the LED is off, the line-interface
board is off.
Refer to “Programming Information” on page 23 for information on the
radio programming procedure.
2.2Configuring the Line-Interface Board
ImportantThis equipment contains devices which are susceptible to
damage from static charges. Refer to “ESD Precautions”
2.2.1Adjustment Points on the Line-Interface Board
The following table describes the line-interface adjustment points.
Adjustments are made by setting the DIP switches on S1 to either “on” or
“off” and by three variable resistors (RV1, RV2 and RV3).
Table 2.1Line-interface board adjustment points
FunctionSelection 1 Selection 2
line-interface board
top side
2.2.2Test Equipment Setup
The following diagram shows the setup of the test equipment used when
a d j u s t i n g RV 1 , RV 2 a n d RV 3 .
Figure 2.1Line-interface test equipment setup
:
two-wire audio interface DIP1 onDIP2 off
four-wire audio interface DIP1 offDIP2 on
busy/gate = busyDIP3 onDIP4 off
busy/gate = rx-gateDIP3 offDIP4 on
busy/gate logic invertedDIP5 offDIP6 on
busy/gate logic normalDIP5 onDIP6 off
bi-directional keying lineDIP7 on
two-wire keyingDIP 7 off
enable keying delayDIP8 off
keying delayadjust RV1
audio line out leveladjust RV2
audio line in leveladjust RV3
18TMAA01-01 Line-Interface BoardTM8000 Mobile Radio Accessories Manual
The line-interface board configuration must be completed before the board
is installed in the radio, as the top side of the line-interface board is not
accessible once the board is screwed to the radio lid. To configure the lineinterface board, carry out the following steps.
1.Program the radio in which the line-interface board is being
installed with default line-interface test settings. The default test
settings are explained in the following tables.
NoteA general description of IOP_GPIO lines used with the line-
interface board is given in Table 2.6 on page 23.
Table 2.2Line-interface default test settings in the Programmable I/O form, Digital tab
PinDirection LabelActionActiveDebounce Signal State Mirrored
IOP_GPIO1 InputNoneExternal PTT 1Low60NoneNone
IOP_GPIO2 Output0No ActionLowNoneNoneNone
IOP_GPIO3 OutputBUSYBusy StatusHighNoneNoneNone
IOP_GPIO4 OutputFKEYF1 Key Status
a. One of the four control head function keys may be selected to control the line-interface AUX line,
which turns the line-interface board on and off. For the associated LED to reflect the status of the
line-interface board, the Function Key Action field on the Key Settings form must be set to Action
Digital Output Line.
a
LowNoneLatchingNone
Table 2.3Line-interface settings in the Programmable I/O form, Audio tab
Rx / PTT Ty peTap I nTap I n Typ eTap In Un m uteTa p O u tTap Ou t TypeTap O ut U nmu t e
RxNoneA-Bypass InOn PTTR7D - SplitBusy Detect
EPTT1T5A-Bypass InOn PTTNoneC-Bypass 0On PTT
Table 2.4Line-interface settings in the PTT form, External PTT (1) tab
FieldSetting
Advanced PTTPTT Transmission TypeVoice
Audio SourceAudio Tap In
2.Set the DIP switches on the line-interface board (S1) to the following
default test settings:
3.Disassemble the radio in order to gain access to the options cavity. For
detailed disassembly instructions, refer to the disassembly procedure
in the TM8100 Service Manual.
Connect the internal options loom between SK2 on the line-interface board and SK102 on the radio’s main PCB.
4.Set up the test equipment shown in
procedure for RV1, RV2 and RV3 described in the following section.
2.2.4Adjusting RV1, RV2 and RV3
Setting the Keying
Time Delay (RV1)
Setting the Line
Output Level (RV2)
Setting the Line
Input Level (RV3)
The keying time delay circuit is used to prevent the burst of noise occurring
before a mobile is able to mute the audio when the carrier signal disappears.
The keying time delay is used in conjuction with the keying signal
(SK1 pin 1).
Set DIP8 off, and adjust RV1 for the required time delay. Rotate RV1
clockwise to increase the delay, and counterclockwise to reduce the delay.
Monitor the line output (SK1 pins 14 and 15) and apply an on-channel
signal from the RF signal generator at an output level of -47dBm,
modulated to 60% of system deviation, at 1kHz AF.
Adjust the RV2 for a line output level of -10dBm.
Apply a line input signal of -10 dBm and key the transmitter.
■ For a two-wire configuration, apply the line input signal to pins 14 and
15 on SK1.
■ For a four-wire configuration, apply the line input signal to pins 4 and
10 on SK1.
Figure 2.1
, and follow the adjustment
Adjust RV3 until 60% of system deviation at 1kHz is achieved.
20TMAA01-01 Line-Interface BoardTM8000 Mobile Radio Accessories Manual
The lines from the radio’s internal options connector that are used by the
line-interface board are IOP_GPIO1 to IOP_GPIO4. The behaviour of
these lines is configured in the Programmable I/O and PTT forms of the
TM8000 Programming Application. Refer to the online help of the
programming application for more information.
The Table 2.6 explains the required input and output line-interface
connections.
Table 2.6Line-interface input and output connections
Radio SignalFunctionComments
GPIO1PTT FROM OPTThis signal causes the radio to transmit. This normally
GPIO2Busy/GateThis active high signal allows connection to the Busy/Gate
GPIO3Busy/Gate (Keying Line) This active high signal allows connection to the Busy/
GPIO4AUXThis allows the line-interface board to be disabled. One of
s
requires External PTT1 to be set up in the Digital tab of
the Programmable I/O form and the External PTT (1) tab
of the PTT form.
output signal. If this is not used, the Action field is set to
No Action and the Active field is set to Low.
Gate output signal. This signal also allows the single line
keying functionality.
the four control head function keys is selected to control
this AUX line.
For the associated LED to reflect the status of the lineinterface board, the Function Key Action field on the Key
Settings form must be set to Action Digital Output Line.
The following tables summarize the signals used for the line-interface board
on the internal options connector (SK2 on the line-interface board) and the
external options connector (SK1 on the line-interface board).
Table 2.7Internal options connector (SK2) - pins and signals
1*
1&
1^
1%
1$
1#
1@
1!
1)
J
I
H
G
F
E
D
C
B
top view
PinRadio Signal
113V8_SW
2AUD_TAP_OUTAUDIO TAP OUT
3AGNDAGND
4AUX_MIC_AUD—
5RX_BEEP_IN—
6AUD_TAP_INAUD_TAP_IN
7RX_AUD—
8RSSI—
9IOP_GPIO1PTT FROM OPT
10IOP_GPIO2SECONDARY BUSY
11IOP_GPIO3BUSY
12IOP_GPIO4AUX
13IOP_GPIO5GPIO5
14IOP_GPIO6—
15IOP_GPIO7—
DGND
16
IOP_RXD
17
IOP_TXD
18
Line-Interface
Signal
13V8 FROM RADIO
AGND
RXD
TXD
Description
switched 13V8 supply from the radio
Programmable tap point out of the receive or
transmit audio chain.
analogue ground
not connected
not connected
Programmable tap point into the receive or
transmit audio chain.
not connected
not connected
IOP_GPIO1 from the radio
3V3 logic level, 5 V tolerant
IOP_GPIO2 from the radio
3V3 logic level, 5 V tolerant
IOP_GPIO3 from the radio
3V3 logic level, 5 V tolerant
IOP_GPIO4 from the radio
3V3 logic level, 5 V tolerant
IOP_GPIO5 from the radio
3V3 logic level, 5 V tolerant
not connected
not connected
analogue ground
asynchronous serial port - receive data
asynchronous serial port - transmit data
24TMAA01-01 Line-Interface BoardTM8000 Mobile Radio Accessories Manual
2.7.2Radio With Line-Interface Board: Receiver + Line Input
Transmitter Frequency Response*
*relative to 1kHz, 20 % deviation, below
limiting
Test Signal0dBm line input*, audio tap T1
Signal-to-Noise Ratio*
Narrow Band
Wide Band
*demodulated, filtered 300Hz to 3 kHz and
de-emphasised 750µs rms
Mute Ratio>60dB
Distortion*
*demodulated, filtered 15kHz low pass
2.8Circuit Description
Bandwidth
Response
300Hz to 3kHz
+1, -3dB relative to -6dB / octave
*60% deviation at 1kHz
>40dB
>43dB
<3%
2.8.1Audio Interface
When the line-interface board is used for repeater applications, the audio
passed between the two radios must be of such a level that the message is able
to be repeated intelligibly. The audio interface is therefore capable of
handling a wide range of input and output levels (-20 to +6dBm). The
audio interface is also capable of using either a two- or four-wire isolated
interface formats, which are selectable using S1.
The input to the line driver IC (U5) is the AUDIO TAP OUT line from
the radio. This line is a software-programmabable tap point which can be
chosen from various audio signals available within the radio and is coupled
through a capacitor into the audio line out level control (RV2). This variable
resister is AC coupled into the line driver (U5) which is used in a bridgedoutput format, with gain set to provide the necessary 21dB gain.
The resistors on the output of the line driver provides the necessary 600Ω
terminating impedance, but also cause a 50% loss of signal. This is
compensated for by the higher-than-necessary gain of the line driver. Line
out protection is provided by two zener diodes, and the transformer (T1)
provides isolation.
The audio interface is capable of using a two- or four-wire interface, so a
tap is taken from one side of the balanced line out and is feed directly into
the line input level control (RV3). When using a four-wire interface, the
signal comes in through a second isolation transformer, T2. T2 is terminated
with 600Ω and also acts as a voltage divider. This means that the signal level
at RV3 will be identical to the level at RV3 when using a two-wire interface.
To achieve the required output level the non-inverting AC amplifier (U7)
has a gain of 10, which provides the necessary 13 d B of gain. The output of
the amplifier is AC coupled into the AUDIO_TAP_IN line (pin 6 of SK2).
2.8.2Logic Interface
The line-interface board is able to provide simple interface solutions with
other radios. Logic is used to control keying of both radios as well as
providing time delays to prevent squelch or cycling problems. The logic uses
gates rather than discrete components.
The choice of which input controls BUSY/GATE can be selected using
switches 3 and 4 of S1, while the sense of BUSY/GATE (pin 12 of SK1) can
be selected using switches 5 and 6. Switch 7 accommodates either a twoline keying system or a single bi-directional keying line.
The comparators (in U1) operate off a single sided regulated 5V supply.
2.8.3Power Supply
The power supply for the line-interface board comes from the radio via
the internal options connector and is a 13.8 V switched supply. Digital
logic components are used in the line-interface board so there is a 5V
regulator provided.
Initially the 13.8V from the radio is filtered and used for the audio line
driver (U5) with reference to analogue ground. This 13.8V is also used to
supply the 5V regulator, which is filtered separately for either 5V digital or
analogue devices. A simple voltage divider is used to provide a 2.5V half-rail
for the digital and a 2.2V rail for the analogue sections.
28TMAA01-01 Line-Interface BoardTM8000 Mobile Radio Accessories Manual
The TMAA01-05 options-extender board provides external
access to most of the signal lines provided by the radio’s internal
options connector.
The options-extender board fits inside the radio in the options
cavity and is connected to the main PCB by the internal options
connector and loom.
The internal options connector signals are then made available on
the high-density 15-way D-range connector mounted on the
options-extender board. This connector fits through the external
options connector hole provided in the radio chassis.
ImportantThe radio does not meet the IP54 protec-
tion standard once an options-extender
board has been installed unless the external options cover seal is installed.
ImportantTo comply with EN 301 489-5, all
cables connected to the external options
connector must be less than three metres
(10 feet) in length.
3.1Changing the Options-Extender Links
The options-extender board configuration must be completed before the
board is installed in the radio, as the top side of the options-extender board
is not accessible once the board is screwed to the radio lid.
ImportantThis equipment contains devices which are susceptible to
damage from static discharges. Refer to “ESD Precautions”
on page 13 for more information.
The options-extender board has various link options which allow the user
to re-configure the outputs available on the external options connector. The
outputs that can be made available by changing linking resistors are:
■ the 5V supply line, and
■ the RX_BEEP_IN line.
In both cases, these lines replace other lines that are available when the
linking resistors are in the factory-set configuration. Note that there is no
external connection available for the RX_AUD line.
The power supply output available on pin 2 of the external options
connector is factory-set to 13.8 V. The output on this pin can be changed to
5V if R11 (a 0Ω surface mount resistor) is moved to position R10.
Figure 3.1 at the top of the page shows the component locations.
RX_BEEP_IN line
ImportantThe maximum current for the 5V supply line is 400 mA.
3.1.2RX_BEEP_IN Line
If the RX_BEEP_IN line is required on the external options connector,
it must replace one of the following lines:
■ IOP_RSSI
■ AUD _TAP_IN
■ AUX _ MIC_AUD
■ AUD _TAP_OUT.
The following table explains the resistor link changes required and
Figure 3.1 at the top of the page shows the component locations.
Table 3.1RX_BEEP_IN resistor changes
RX_BEEP_IN Line ReplacesRemove ResistorAdd Resistor
IOP_RSSIR2R3
AUD_TAP_INR4R5
AUX_MIC_AUDR6R7
AUD_TAP_OUTR8R9
36TMAA01-05 Options-Extender BoardTM8000 Mobile Radio Accessories Manual
The following table describes the parts required to install an options-extender
board in a radio. The parts marked with an asterisk (*) are not shown in
Figure 3.2 and are used to connect to the radio’s external options connector.
Table 3.2Options-extender installation parts required
The following tables summarize the signals used for the options-extender
board on the internal options connector (SK1 on the options-extender board)
and the external options connector (SK2 on the options-extender board).
Manual (product code MMAA30-01-00-807) contains a detailed
electrical specification for the signals available on the radio’s inter-
nal options connector. This manual is part of the 3DK Resource
CD, which can be purchased using product code TMAA30-01.
Table 3.3Internal options connector - pins and signals
Connector
Pin
Signal
Description
1*
1&
1^
1%
1$
1#
1@
1!
1)
J
I
H
G
F
E
D
C
B
top view
113V8_SW
2AUD_TAP_OUT
3AGND
4AUX_MIC_AUD
5RX_BEEP_IN
6AUD_TAP_IN
7RX_AUD
8RSSI
9-15 IOP_GPIO1 to
IOP_GPIO7
DGNDdigital ground
16
IOP_RXDan RS-232 compliant asynchronous serial port - receive data
17
IOP_TXDan RS-232 compliant asynchronous serial port - transmit data
18
switched 13V8 supply from the radio
Programmable tap point out of the receive or transmit audio chain.
DC-coupled
analogue ground
Auxiliary microphone input, with electret microphone biasing
provided.
Dynamic microphones are not supported.
receive sidetone input, AC-coupled
Programmable tap point into the receive or transmit audio chain.
DC-coupled
D1001-10014-03Diode SMD MBRS140T3 Sch
D2001-10099-01Diode BAV99w Dual Ss
D3001-10099-01Diode BAV99w Dual Ss
D4001-10099-01Diode BAV99w Dual Ss
D5001-10099-01Diode BAV99w Dual Ss
D6001-10099-01Diode BAV99w Dual Ss
D7001-10099-01Diode BAV99w Dual Ss
D8001-10099-01Diode BAV99w Dual Ss
IC1002-10020-20IC SMD ADM202 Rs-232 Con S0-16
IC2002-10267-40IC LM2674 S08 Swtch Volt Regul
microphone
button not shown
(to rear of
microphone)
The TMAA02-02 DTMF microphone plugs into the
microphone socket on the radio control head, and enables users
to make calls to a PABX or PSTN.
To make a call, enter the required number using the DTMF keypad
and the DTMF microphone generates audible DTMF tones as the
microphone keys are pressed. Press the PTT key and speak clearly
into the microphone then release the PTT key when you have
finished speaking.
grommet
The microphone button operates a hookswitch, which is closed
when the microphone is connected to the microphone clip and open
when the microphone is removed from the microphone clip. The
function of the hookswitch is determined by the radio programming.
4.1Installation
4.1.1Installing the Microphone
ImportantThe DTMF microphone grommet must be installed when-
ever the microphone is plugged into the microphone
socket. When installed, the grommet has two functions:
■ to prevent damage to the microphone socket when
there is movement of the microphone cord, and
■ to ensure that the control head is sealed against water,
dust and other environmental hazards.
1.Plug the DTMF microphone cord into the microphone socket on the
radio control head.
2.Slide the microphone grommet along the microphone cord and push
two adjacent corners of the grommet into the microphone socket cavity.
3.Squeeze the grommet and push the remaining corners into position.
4.Check that the grommet is seated correctly in the cavity.
Install the microphone clip in the most convenient location for the radio
user. It must be within easy reach of the user, but in such a position that the
microphone PTT key cannot be inadvertently activated or jammed on.
Connect the microphone clip to the negative supply if hookswitch
operation is required.
4.2Adjustment
Remove the DTMF microphone back cover and set the DTMF tone level
to approximately 80% deviation (±4 kHz for wide bandwidth radios and
±2kHz for narrow bandwidth radios).
4.3Radio Programming
The following table shows the settings required for CH_GPIO1 in the
Programmable I/O form of the TM8000 Programming Application. This
setting means that when a key is pressed on the microphone, the DTMF
tones are fed into the radio’s speaker at a reduced volume, giving the radio
user confidence that the tones are being transmitted. Refer to the online
help of the programming application for more information.
Table 4.1DTMF microphone settings in the Programmable I/O form, Digital tab
PinDirection LabelActionActiveDebounce Signal State Mirrored To
CH_GPIO1 InputNoneSend Mic Audio
To Spkr
HighNoneNoneNone
4.4Interface Specification
The following table and diagram summarizes the signals used for the DTMF
microphone on the radio’s microphone connector and shows the interface
between the DTMF microphone and the radio.
Table 4.2DTMF microphone connector - pins and signals
PinSignalColourDescription
1——not connected
213V8_SWredpower supply (switched)
3—yellownot connected
4MIC_PTTblackPTT and hookswitch
5MIC_AUDwhiteaudio from the microphone
6AGNDblueanalogue ground
7——not connected
8MIC_GPIO1greenmute out
48TMAA02-02 DTMF MicrophoneTM8000 Mobile Radio Accessories Manual
The microphone has a standard 12-key telephone keypad. When one of the
keypad keys is pressed, a DTMF tone specific to that key is generated on the
MIC_AUD line (pin 5). For the duration of the tone, the tone generator
activates the PTT, so that the user is not required to press the PTT key to
transmit each tone.
The support kit for concealed and dynamic microphones can be
used in two main applications:
■ to monitor activity around the radio if the radio is placed in
emergency mode, and
■ to support the use of a dynamic microphone, such as that used in
the TMAA10-02 handset.
The concealed and dynamic microphone support board plugs onto
the radio’s control head PCB and contains circuitry for a pre-
concealed microphone
(capsule, rubber seal & wires)
amplifier and a microphone switch circuit. The concealed electret
microphone is installed inside the speaker grille of the control head.
5.1Installation
ImportantThis equipment contains devices which are susceptible to
damage from static discharges. Refer to “ESD Precautions”
on page 13 for more information.
5.1.1Disassembling the Radio Control Head
To install the concealed-microphone capsule and concealed and dynamic
microphone support board, the control head must be removed from the
radio and disassembled. For detailed disassembly instructions, refer to the
disassembly procedure in the TM8100 Service Manual.
5.1.2Installing the Microphone Capsule and Dynamic Microphone Board
1.Disassemble the control head in order to gain access to the speaker
grille. This will mean removing the control head PCB, the space
frame, and the speaker.
ImportantTo maintain the IP54 protection class, great care must be
taken when installing the microphone capsule and seal
into the concealed-microphone cavity.
3.Push the microphone capsule and seal
into the concealed-microphone
cavity, with the capsule wires
towards the speaker grillef.
4.Reassemble the control head. This
includes reinstalling the speaker
the space frame
head PCB
Plug the speaker lead into the speaker
connector
5.On the control head PCB, solder the positive concealed-microphone
wire to the MIC+ pad
i
j
and the control
h
.
.
1)
e
,
g
efd
and the negative wire to AGND 1!.
d
Note
The positive wire on the microphone capsule is identified by a red stripe.
hgij
1)
6.On the control head PCB, remove R11 1@ and
solder P2
7.Plug S2
dynamic microphone support board onto P2
and P3 on the control head PCB.
8.Re-install the control head on the radio body.
1#
and S3
1%
and P3
1!
in the positions shown.
1$
on the concealed and
1^
1%
1^
1@
1#
1$
5.2Radio Programming
When the support kit for concealed and dynamic microphones is installed
in a radio, two fields in the UI Preferences form of the TM8000
Programming Application may need to be selected.
■ Dynamic Mic Support: select this field if a dynamic microphone is
installed. An example of an accessory that uses a dynamic microphone is
the TMAA10-02 handset.
■ Covert Mic Fitted: select this field if a concealed microphone is installed.
Refer to the online help of the programming application for more information.
52TMAA02-06 Support Kit for Concealed & Dynamic MicrophonesTM8000 Mobile Radio Accessories Manual
The following table and diagram summarizes the signals used for the
concealed and dynamic microphone support kit and shows the interface
between the support kit and the radio control head.
Table 5.1Concealed and dynamic microphone support board - pins and signals
PinSignalColour
1CH_LESPI latch signal to latch microphone select data into
the concealed and dynamic microphone board
CEGI
BDFH
S2 top view
CEG
BDF
S3 top view
2D2-D3data from the control head shift register
3OEenables the output of the shift register of the audio
switch
4CH_SPI_CLKSPI clock signal to clock microphone select data into
concealed and dynamic microphone board
5+13V8_SWpower for analogue parts
6+3V3power for digital parts
7RSTinitialise the concealed and dynamic microphone
board shift register
8DGNDdigital ground
1MIC_AUD_IN-P1microphone audio from microphone interface
2MIC_AUD_OUTprocessed microphone signal output to radio
3—not connected
4MIC_AUD_OUTprocessed microphone signal output to radio
5MIC+audio from the concealed microphone
6AGNDanalogue ground
Figure 5.1Concealed and dynamic microphone support kit to radio interface
The TMAA10-01 desktop microphone is an omnidirectional
dynamic microphone which can be used in dispatch
situations, where the microphone is positioned on a flat
surface. The desktop microphone plugs into the microphone
socket on the radio control head.
The desktop microphone has an internal pre-amplifier and an
adjustable sensitivity control on the underside of the desktop
microphone base.
PTT key
grille
grommet
microphone
base
R
O
T
I
N
O
M
T
I
M
S
N
A
R
T
monitor key
6.1Operation
Hold down the monitor key and check whether the channel is clear.
If the channel is clear, press the PTT key to transmit. Speak clearly into the
microphone and release the PTT key when you have finished talking.
NoteThe monitor key can be locked in the ‘on’ position. To do this,
6.2Installation
ImportantThe desktop microphone grommet must be installed
hold the monitor key down and slide the monitor key towards
you. The monitor key should now be locked on.
whenever the desktop microphone is plugged into the
microphone socket. When installed, the grommet has two
functions:
■ to prevent damage to the microphone socket when
there is movement of the microphone cord, and
■ to ensure that the control head is sealed against water,
dust and other environmental hazards.
1.Plug the microphone cord into the microphone socket on the radio
control head.
2.Slide the grommet along the cord and push two adjacent corners of the
Adjust the output sensitivity of the desktop
microphone using R5. R5 is accessible from the
underside of the desktop microphone, as shown.
The microphone sensitivity is set to maximum by
rotating R5 counterclockwise.
microphone
grommet
control head
6.4Interface Specification
The following table and diagram summarizes the signals used for the desktop
microphone on the radio’s microphone connector and shows the interface
between the desktop microphone and the radio.
Table 6.1Desktop microphone connector - pins and signals
PinSignalColourDescription
1——not connected
2——not connected
3——not connected
4MIC_PTTyellowPTT
5MIC_AUDredaudio from the microphone
6AGNDbareanalogue ground
7——not connected
8——not connected
adjust R5 here
60TMAA10-01 Desktop MicrophoneTM8000 Mobile Radio Accessories Manual
The desktop microphone uses a dynamic microphone capsule and contains
a pre-amplifier (Q1) to boost the microphone level to that required by the
radio. Power for the pre-amplifier is provided by the electret microphone
bias circuit within the radio. R5 is used to adjust the gain.
PTT and hookswitch signals are combined onto one line and fed to the
control head PTT input of the radio.
The TMAA10-02 handset provides the user with privacy and also
push-
button
locking
cradle
mounting
handset
radio to
handset cord
plate
improves the audio quality in noisy environments. The handset
uses a dynamic microphone capsule, so the TMAA02-06 support
kit for dynamic microphones must also be installed and configured
for dynamic microphone operation.
When your radio receives a call and the handset is mounted in
its locking cradle, the radio unmutes and you can hear the call
from your radio’s internal speaker and from any connected
remote speaker.
If you remove the handset from its cradle when you receive a call,
the radio unmutes and you can hear the call from your radio’s
internal speaker, from any connected remote speaker and from the
handset earpiece.
Using private handset mode, the radios internal and external speakers
grommet
are muted and the call can only be heard from the handset earpiece.
7.1Installation
7.1.1Installing the TMAA02-06 Dynamic Microphone Support Kit
Refer to Section 5“TMAA02-06 Support Kit for Concealed & Dynamic
Microphones” for installation details.
7.1.2Handset Wiring
1.Drill a hole in the chosen mounting surface for the radio to handset
cord and pass the cord through the hole.
2.Prepare the radio to handset cord, as follows.
■ Cut the radio to handset cord to the required length.
■ Strip away about 60mm (2 inches) of the cable outer sheath on the
end without a connector.
■ Cut off the exposed orange, red and grey wires.
■ Strip about 6 mm (0.2 inches) of the coating off each of the five
remaining wires.
3.Secure the radio to handset cord in the handset PCB P-clip
The Dynamic Mic Support setting in the UI Preferences form of the
TM8000 Programming Application must be selected. Refer to the online
help of the programming application for more information.
Table 7.2Handset settings in the UI Preferences form
FieldSettingSelected/Cleared
Audio SetupDynamic Mic Supportselected
If private handset mode is required, the radio needs to be programmed to
mute the audio power amplifier when the handset is out of the cradle. The
audio path is then only through the RX AUDIO line to the handset earpiece.
The following table shows the settings required in the Programmable I/O
form of the TM8000 Programming Application. Refer to the online help
of the programming application for more information.
NoteIf private handset mode is programmed, then no audio will be
heard from the speakers if the handset is unplugged.
Table 7.3Handset settings in the Programmable I/O form
PinDirectionLabelActionActiveDebounceSignal State Mirrored To
The following table and diagram summarizes the signals used for the handset
on the radio’s microphone connector and shows the interface between the
handset and the radio.
Table 7.4Handset microphone connector - pins and signals
PinSignal
1RX_AUD8brownreceive audio to handset
2———not connected
3———not connected
4PTT2whitePTT and hookswitch
5MIC9yellowaudio from the handset to dynamic-mic
6GND10greenanalogue ground
7———not connected
8CH_GPIO1 3blueprogrammable line controlling private mode
Figure 7.2Handset to radio interface
.
Handset PCB
Connector
Colour Description
support board
66TMAA10-02 HandsetTM8000 Mobile Radio Accessories Manual
The TMAA10-03 high-power remote speaker is installed in
parallel with the radio’s existing internal speaker. The remote
speaker can then be installed at some distance from the radio,
or it can be used to increase the volume of the audio from the
radio’s existing internal speaker.
The remote speaker cable is terminated with two receptacles
mounting
bracket
receptacles
and two spare receptacles are included with the remote
speaker, along with four mounting screws and washers.
8.1Installation
8.1.1Remote Speaker Mounting
1.Choose a mounting position for the remote speaker where it will not
interfere with the operation of any of the vehicle controls.
2.Remove the remote speaker from the mounting bracket and use the
screws and washers provided to fix the mounting bracket securely in
the chosen location.
ImportantCheck before drilling that the drill will not damage any
components or wiring behind the mounting location.
■ If mounting the bracket onto a metal surface, drill two 3.5mm
(0.14 inch) holes in the appropriate locations and secure the
bracket with the supplied self tapping screws.
■ If mounting the bracket to any other material, such as plastic, drill
two 4.5mm (0.18 inch) holes and attach the bracket with screws
and captive nuts, or similar.
3.Attach the speaker to the mounting bracket using the thumbscrews.
4.Run the free end of the speaker cable to the radio power cable and
install the two receptacles in the power connector, as described in the
“Power Connector Wiring” procedure.
ImportantCheck that the speaker cable is protected from engine heat,
ImportantThe radio does not meet the IP54 protection standard once
9.1Installation
The TMAA10-04 hands-free kit plugs into the radio’s
auxiliary connector and can be used in conjunction with
the radio’s rugged microphone. When hands-free
operation is required, the user activates the PTT using the
conveniently located remote PTT key, and the remote
electret microphone replaces communication through the
usual rugged microphone.
An extension lead is provided for the remote PTT and
there are three mounting options for the remote
microphone.
Note that the hands-free kit does not provide
hookswitch operation. If this is required, the rugged
microphone can provide this.
a hands-free kit has been installed.
ImportantCare should be taken to avoid routing any cables near vehicle
pedal controls, steering column and other moving parts.
9.1.1Installing the Microphone
1.Choose one of the three mounting options provided for the remote
microphone and determine the most appropriate location for the
microphone.
The mounting position of the microphone should be no more than
50cm (20 inches) from the user’s mouth.
2.Route the remote microphone cable so as not to distract the driver.
3.Mount the remote microphone in the chosen location and check
that the microphone and cable are clear of all the usual movements
performed by the user.
ImportantThe remote PTT must be operable from a normal driv-
ing position.
1.Secure the remote PTT in position using the velcro strap and plug the
remote PTT cord into the remote PTT extension lead.
A common position for the remote PTT is on the gear lever of
the vehicle.
2.Check that the cord and lead do not interfere with the safe operation
of the vehicle.
9.2Radio Programming
The following tables show the settings required in the PTT form and
Programmable I/O form of the TM8000 Programming Application. Some
of these settings are default settings and may not need to be changed. Refer
to the online help of the programming application for more information.
9.2.1Hands-Free PTT Form Settings
NoteIf hookswitch operation is programmed for the rugged micro-
phone and the Inhibit PTT Transmission When Mic On Hook
field is selected in the PTT tab of the PTT form, then the handsfree remote PTT cannot transmit when the rugged microphone
hookswitch is closed (the microphone is on the microphone clip).
Table 9.1Hands-free settings in the PTT form, External PTT (1) tab
FieldSetting
Advanced EPTT1
PTT Transmission TypeVoice
Audio SourceAUX MIC
9.2.2Hands-Free Programmable I/O Form Settings
NoteThe Programmable I/O form setting for AUX_GPIO4 must have
the default programming settings and the AUX_GPIO4 pullup
resistor on the radio main PCB must be set for the factory default
of 3.3V (R769 fitted).
Table 9.2Hands-free settings in the Programmable I/O form, Digital tab
PinDirectionLabelActionActiveDebounceSignal State Mirrored To
AUX_GPI1InputNoneExternal PTT 1 Low25NoneNone
AUX_GPIO4 NoneNoneNo ActionNoneNoneNoneNone
70TMAA10-04 Hands-Free KitTM8000 Mobile Radio Accessories Manual
The following table and diagram summarizes the signals used for the handsfree kit on the radio’s auxiliary connector and shows the interface between
the hands-free kit and the radio.
Table 9.3Auxiliary connector - pins and signals
Pin Signal nameDescription
B
J
C
1)
D
1!
E
1@
F
1#
G
1$
H
1%
I
rear view
Figure 9.1Hands-free to radio interface
.
8+13V8_SW
10AUX_GPIO4
12AUX_GPI1
14AUX_MIC_AUD
15AGND
power to hands-free microphone preamplifier
reference voltage to pre-amplifier
regulator
PTT signal from hands-free kit
microphone audio to the radio
analogue ground
9.4Circuit Description
The hands-free microphone signal is amplified by a pre-amplifier in the
auxiliary connector plug. The power supply to this amplifier is provided by
the +13.8V supply on the auxiliary connector. This supply is filtered and
regulated down to approximately 3.3V. The reference voltage for the
regulator is provided by AUX_GPIO4 line.
The hands-free microphone signal is fed via AUX_MIC_AUD and an input
selector to the radio’s internal microphone amplifier. The microphone input
selected depends on the PTT source used to make the call. If the remote PTT
is used, then AUX_MIC_AUD is selected. If the control head microphone
PTT is used, then CH_MIC_AUD is selected. Test points for all other
auxiliary connections are provided on the auxiliary connector plug PCB to
facilitate the connection of other devices or signals e.g ignition switch signal.
The TOPA-SV-024 test unit is used to test and maintain Tait Orca
portables (TOP) and TM8100 radios by providing an interface between
the radio, a test PC, and an RF communications test set.
The diagram below shows the front panel of the test unit.
Figure 10.1TOPA-SV-024 test unit
10.1Test Equipment Setup
The diagram on the following page shows how the test unit is connected to
the radio, the test PC, and the RF communications test set.
NoteThe test unit can also be connected to a T2000 radio using the
T2000-11 cable. Use with T2000 radios is not described in
this document.
This section explains the function of the TOPA-SV-024 test unit controls.
The procedure for using the test unit is described in the section of the
TM8100 Service Manual covering test equipment.
10.2.1TOP / TM8000 switch
This 2-way toggle switch is used to switch attenuation resistors (R4, R5, R6)
in and out of the line from the radio’s positive speaker output to the positive
receive audio/SINAD output of the test unit (before the isolating transformer).
■ When set to TOP, the attenuation resistors are switched out.
■ When set to TM8000, the attenuation resistors are switched in
(attenuation 10:1).
ImportantSelecting the wrong switch position can result in incorrect
SINAD readings.
10.2.2TOP Mod Audio / Off / Mic Audio switch
This 3-way toggle switch is used to switch between Mod Audio (Tait Orca
portables only), Mic Audio, and Off (no audio signal).
■ With the Tait Orca portables, this switch can be used for setting up dual
point modulation by applying modulation to different parts of the radio.
■ For normal transmit deviation tests (Tait Orca portables and TM8100),
this switch is set to Mic Audio.
10.2.3Hook On / Hook Off switch
ImportantWhen using the test unit with Tait Orca portables, the
Hook On / Hook Off toggle switch must be set to
Hook Off. Tait Orca portables do not have a hookswitch,
and if the switch is set to Hook On, the Tait Orca portable
F1 function is activated.
This 2-way toggle switch is used to simulate the microphone hookswitch
opening (“hook off ”) and closing (“hook on”). This is done by switching a
12kΩ resistor (R3) in or out of the MIC_PTT line.
■ When set to Hook Off, the 12kΩ resistor (R3) is switched out of the
MIC_PTT line. This simulates the microphone being removed from the
microphone clip.
■ When set to Hook On, a 12kΩ resistor (R3) is switched into the
MIC_PTT line. This simulates the microphone being placed on the
microphone clip.
This 2-way toggle switch is used to switch between receive and transmit mode.
■ When set to Rx, the PTT line is switched to high impedance.
■ When set to Tx/PTT, the PTT line is pulled to ground.
10.2.5Speaker / Radio / Load switch
This 3-way toggle switch is used during receive audio tests to switch the audio
to the test unit speaker (Speaker), to the radio’s internal speaker (Radio) or to
a dummy load consisting of R1 and R2 (Load).
NoteThis switch does not disconnect the radio’s internal speaker on
M8100 radios with a user interface. If the switch is set to Speaker
or Load, this simulates an external speaker being connected in par-
allel to the radio’s internal speaker. TM8100 radios without a user
interface do not have an internal speaker.
With all settings, a low level audio signal is available for testing through
the SINAD port.
Tait Orca portables■ When set to Speaker, only the speaker of the test unit is active.
■ When set to Radio, only the speaker of the Tait Orca portable is active.
■ When set to Load, no speaker is active. The audio signal is terminated in
the test unit dummy load.
TM8100 radios with
user interface
■ When set to Speaker, the speakers of the test unit and the TM8100 are
both active. The speaker of the TM8100 cannot be disconnected.
■ When set to Radio, only the speaker of the TM8100 is active.
■ When set to Load, the TM8100 speaker remains active.
80TOPA-SV-024 Test UnitTM8000 Mobile Radio Accessories Manual