Tait TM8200 mobiles User manual

Tuneup
Issue 1
August 2004
TM8200 base station
Tuneup info for
compliance

Tuneup 2
© Tait Electronics Ltd August 2004
Tait Contact Information
Tait Radio Communications http:// www.taitworld.com
Corporate Head Office
New Zealand
Tait Electronics Ltd
P.O. Box 1645
Christchurch
New Zealand
E-mail: [email protected]
Website: http://www.taitworld.com
Technical Support:
E-mail: su[email protected]
Website: http://support.taitworld.com
Tait North America
Regional Head Office - United States of
America
Tait North America Inc.
E-mail: [e-mail]
Canada
Tait North America Inc.
E-mail: [email protected]
Latin America
Tait Latin America
E-mail: [e-mail]
Ta i t E u ro p e
Regional Head Office - United Kingdom
Tait Mobile Radio Ltd
E-mail: [email protected]
Tait North Asia
Regional Head Office - Hong Kong
Tait Mobile Radio (Hong Kong) Ltd
E-mail: [e-mail]
Beijing
Tait Mobile Radio (Hong Kong) Ltd
E-mail: [e-mail]
Tait South Asia
Regional Head Office - Singapore
Tait Electronics (Far East) Pte Ltd
E-mail: sin[email protected]
Thailand
Tait Mobile Radio Ltd
E-mail: [e-mail]
Oceania
New Zealand
Tait Communications Ltd
E-mail: [email protected]
Australia
Tait Electronics (Aust) Pty Ltd
E-mail: [email protected]
Note: For the addresses and phone numbers
of the above regional offices refer to the Tait-
World website.

3Tuneup
© Tait Electronics Ltd August 2004

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© Tait Electronics Ltd August 2004
Preface
Scope of Manual
Welcome to the Tuneup information for compliance. This manual provides
information on Tuneup for the TM8200 hardware.
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 “Tait 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.

5Tuneup
© Tait Electronics Ltd August 2004
Typographical Conventions
“File > Open” means “click File on the menu bar, then click Open on the
list of commands that pops up”.
Associated Documentation
TM8200 Installation Guide.
TM8200 Service Manual.
TM8200 Specifications Manual.
TM8200 Service Kit and Alarm Center User’s
Manuals and online Help.
TM8200 Calibration Kit User’s Manual and online
Help.
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.
Updates may also be published on the Tait support website.
Publication Record
Issue Publication Date Description
1 August 2004

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© Tait Electronics Ltd August 2004
Contents
1 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.1 Equipment Set-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2 TOPA-SV-024 Test Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2.1 Test Equipment Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2.2 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
TOP / TM8000 switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
TOP Mod Audio / Off / Mic Audio switch . . . . . . . . . . . . . . . . . . . . 26
Hook On / Hook Off switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Rx / Tx/PTT switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Speaker / Radio / Load switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
2.3 PCB Information (PCB IPN 220-01418-02A) . . . . . . . . . . . . . . . . . . . . . 28
Parts List (Rev. 4). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
PCB Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Calibration basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Calibrating the radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
NoteUsing the calibration application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Sliders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Option buttons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Instruction boxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Radio Model toolbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
n Specifications form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
2. Viewing calibration test results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
2. Viewing calibration files. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
NoteCalibration tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
NoteAD6521 Volt Ref . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
NoteTCXO/VCO Mod Dev . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
NoteReceiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
NoteMute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
NoteFinal Gate Bias and Tx Driver Bias Limit . . . . . . . . . . . . . . . . . . . . . . . . . 35
ImportantTx Power Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
ImportantDeviation and squelch thresholds . . . . . . . . . . . . . . . . . . . . . . . 36
ImportantDeviation Settings tab. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
n Squelch and Signalling Thresholds tab . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
n Advanced tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

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© Tait Electronics Ltd August 2004
n Raw data reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
n Volt Ref/TCXO/VCO/VCXO tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
n VCO Auto Cal Check tab. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
n Receiver tab. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
n Mute tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
n Tx Gate Biasing tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
n Power tab. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
n Test Freqs tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Tuneup General Information 8
August 2004© Tait Electronics Ltd
1 General Information
Transmitter Issues The following issues relate to the operation of the transmitter:
■RF and thermal burns
■antenna loading
■test transmissions
■accidental transmissions
■distress beacons
The precautions required in each case are given below.
Caution Avoid thermal burns. Do not touch the cooling
fins or underside of the radio body when the
transmitter is or has been operating. Avoid RF
burns. Do not touch the antenna while the trans-
mitter is operating.
Important The radio has been designed to operate with a 50 Ω
termination impedance, but will tolerate a wide range of
antenna loading conditions. Nevertheless, do not
operate the transmitter without a suitable load. Failure
to do so might result in damage to the power output
stage of the transmitter.
Important While servicing the main board, avoid overheating the
radio during test transmissions. The following is good
practice: Secure the main-board assembly in the chassis
with the two external screws and one of the internal
screws. The heat-transfer block must be secured to the
main board. The lid of the radio body may be left off.
After completing any measurement or test requiring
activation of the transmitter, immediately return the
radio to the receive mode.
Important Under certain circumstances the microprocessor can key
on the transmitter. Ensure that all instruments are
protected at all times from such accidental transmissions.
Note The frequency ranges 156.8 MHz ± 375 kHz,
243 MHz ± 5 kHz, and 406.0 to 406.1 MHz are reserved
worldwide for use by distress beacons. Do not program
transmitters to operate in any of these frequency bands..

9 General Information Tuneup
August 2004© Tait Electronics Ltd
Figure 1.1 Test equipment for servicing radios
RADIO BODY
BLANK
CONTROL HEAD
POWER CONNECTOR
TEST PC
SERIAL PORT
DB9 SOCKET
RJ12 PLUG
COMPUTER
CONNECTOR
RADIO CONNECTOR
DB15 SOCKET
RJ45 PLUG
MICROPHONE
CONNECTOR
IN-LINE
CONNECTOR
AUXILIARY CONNECTOR
BANANA
PLUGS
BNC PLUGTEST UNIT
OSCILLOSCOPE
RX AUDIO/SINAD
CONNECTOR
AUDIO IN HI
RF COMMUNI-
CATIONS
TEST SET
AUDIO OUT
TX AUDIO
CONNECTOR
RADIO BODY
CONTROL HEAD
RF CONNECTOR
BNC PLUG
BNC PLUG
BNC PLUG
AUDIO MONITOR
OUTPUT
RF IN/OUT
N-TYPE
CONNECTOR
DC POWER SUPPLY
PROGRAMMING
CONNECTOR
RJ45
PLUG
DB9
SOCKET
ADAPTOR
(SEE INSET FOR CONNECTION
TO BLANK CONTROL HEAD)
AC INPUT

Tuneup General Information 10
August 2004© Tait Electronics Ltd
1.1 Equipment Set-up
Introduction This subsection covers the setting up of the test equipment for servicing
the radios, as well as related aspects:
■setting up of test equipment, including test unit
■use of test unit
■installing programming and calibration applications
■basic programming and calibration tasks
■invoking CCTM (computer-controlled test mode)
■summary tables of CCTM commands and error codes
■visual and aural indications provided by radio
The last-named aspect applies to control heads with UI, and concerns
the
STATUS LEDs and LCD screen, and the various alerts and confidence
tones emitted from the speaker.
Connect Equipment Connect the test equipment to the radio as shown in Figure 1.1. Use the
test unit, cables and adaptor of the service kit. The face of the test unit is
fitted with a speaker, five switches, and the following connectors:
■ “RADIO” connector (DB15 plug)
■ “COMPUTER” connector (RJ12 socket)
■ “TXAUDIO” connector (BNC socket)
■ “RXAUDIO/SINAD” connector (BNC socket)
These connectors are all required for connecting the test equipment and
radio. Figure 1.2 illustrates the face of the test unit.
Use of Test Unit The test unit facilitates the testing of the receive and transmit functions
of radios. When the switches are set for the required mode, the test unit
automatically routes all signals to the appropriate destinations. The unit
may be used with both mobile and portable radios. A full description is
given in the accessories manual. As shown in Figure 1.2, the switches
are:
■ SELECTOR switch
■ HOOK switch
■ MODE switch
■ AUDIO IN switch
■ AUDIO OUT switch
For servicing TM8200 radios set the
SELECTOR switch to “TM8200” . For
testing receive and transmit functions respectively, the remaining switches
must be set as described below. (When programming or calibrating
radios the switches have no effect, although it is good practice to set the
MODE switch to “RX” .)

11 General Information Tuneup
August 2004© Tait Electronics Ltd
Figure 1.2 Illustration of the face of the test unit
Radio
Rx
Tx / PTT
Speaker
Radio
Load
TOP Mod Audio
Mic Audio Rx Audio /
SINAD
Tx Audio
Computer
TOP
Off
Hook On
Hook Off
TM8000 only
TM8000
AUDIO OUT
SWITCH
AUDIO IN
SWITCH
SPEAKER
SELECTOR
SWITCH
HOOK
SWITCH
MODE
SWITCH

Tuneup General Information 12
August 2004© Tait Electronics Ltd
Settings for
Receive Tests For receive tests set the switches on the test unit as follows:
■ HOOK switch : “HOOK OFF”
■ MODE switch : “RX”
■ AUDIO IN switch : “OFF”
■ AUDIO OUT switch: “SPEAKER” or “LOAD”
In the last-named case, with the switch in the “SPEAKER” position, the
received audio is output from the test unit’s speaker. In the
“LOAD”
position a 16 Ωload is switched into the circuit in place of the test unit’s
speaker. Note, however, that the AUDIO OUT switch has no effect on the
radio’s speaker.
Settings for
Transmit Tests For transmit tests set the switches on the test unit as follows:
■ HOOK switch : “HOOK OFF”
■ MODE switch : “RX” initially
■ AUDIO IN switch : “MIC AUDIO”
■ AUDIO OUT switch: (immaterial)
When ready to transmit, set the
MODE switch to the “TX/PTT” position.
This switch functions in the same way as the PTT switch on the
microphone.
Product Support CD After setting up the test equipment for the first time, install the
programming and calibration applications on the test PC. These
applications are included on the product support CD supplied with the
service kit. Access the contents of the CD as follows:
1. Insert the product support CD in the CD-ROM drive of the test
PC.
2. The
Contents window of the CD should appear; the window is
illustrated in Figure 1.3. If the Contents window fails to appear,
proceed as follows:
3. Click
“Start” > “Run” . The “Run” dialogue box appears.
4. Type
d:\menu.exe , where d is the letter designating the CD-ROM
drive.
5. Click the
“OK” button. The “Run” dialogue box is closed and the
Contents window appears.

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August 2004© Tait Electronics Ltd
Install Applications The upper two buttons in the
Contents window of the product support
CD allow for the installation of the programming and calibration
applications:
1. Click the
“Programming” button. Installation of the programming
application begins automatically. Follow the instructions on the
screen to complete the installation.
2. Click the
“Calibration” button. Installation of the calibration
application begins automatically. Follow the instructions on the
screen to complete the installation.
3. The
Contents window remains open following installation of the
above applications. Investigate the remaining features of the
product support CD as described below, or click the
Close button
to remove the window.
4. Remove and store the product support CD.
View Documents The middle six buttons in the Contents window of the product support
CD give access to the documents stored on the CD:
To view any document click the corresponding button. The Adobe
Acrobat Reader application needs to be installed on the test PC.
Figure 1.3 The Contents window of the product support CD

Tuneup General Information 14
August 2004© Tait Electronics Ltd
Access TaitWorld
Website Of the two lower and remaining buttons in the
Contents window of the
product support CD, the
“Miscellaneous” button is currently unused.
Clicking the
“TaitWorld” button opens the default browser installed on the
test PC and accesses the TaitWorld website.
Programming
Application The programming application is typically used to read the programming
file of a radio, change settings in the various forms constituting the file,
and reprogram the radio. Alternatively, the application can be used to
open a new file, select the required settings, and program one or more
radios. To run the application and become familiar with its features,
proceed as follows:
1. Click
“Start” > “Programs” > “Tait Programming Applications” >
“TM8200 Programming Application” . The programming application
is opened.
2. On the menu bar, click
“Help” > “Contents and Index” . The on-line
help facility is opened.
3. Read the information provided by the on-line help facility.
4. Close the on-line help facility and close the programming
application.

15 General Information Tuneup
August 2004© Tait Electronics Ltd
Calibration Application The calibration application is used to read radio calibration files, perform
diagnostic functions, change certain settings, perform calibration tests,
view and check calculated calibration data, and program radios with
calibration files. To run the application and become familiar with its
features, proceed as follows:
1. Click
“Start” > “Programs” > “Tait Programming Applications” >
“TM8200 Calibration Application” . The calibration application is
opened.
2. On the menu bar, click
“Help” > “Contents and Index” . The on-line
help facility is opened.
3. Read the information provided by the on-line help facility.
4. Close the on-line help facility and close the calibration
application.
Computer-controlled
Test Mode The servicing procedures require a radio to be placed in the computer-
controlled test mode. In this mode CCTM commands can be entered at
the test PC. These commands are then relayed via the test unit to the
radio. Certain CCTM commands cause the radio to carry out particular
functions; others read particular settings and parameter values in the
radio. The CCTM commands of use in servicing radios are listed in
Table 1.1 to Table 1.5, grouped according to category.
Terminal Program
for CCTM To place a radio in CCTM requires the use of a terminal program on the
test PC. An example is HyperTerminal, which is supplied with
Microsoft Windows. As a preliminary, first select the settings for the
communications port as follows:
1. Open the ter minal program. (In the case of HyperTerminal, click
“Start” > “Programs” > “Accessories” > “Communications” >
“HyperTerminal” .)
2. In the terminal program first select the COM port to which the
radio is connected. Then select the following settings for the port:
■bits per second : 19 200
■data bits : 8
■parity : none
■stop bits : 1
■flow control : none
3. Click the
“OK” button (or equivalent).
4. Save the file with the port settings under a suitable name. For
subsequent sessions requiring the terminal program, open this file.

Tuneup General Information 16
August 2004© Tait Electronics Ltd
Table 1.1 CCTM commands in the audio category
Command
Usage
Entry at keyboard Response on screen
Audio category
20 – Mute received audio
Forces muting of the received
audio signal
20 None
21 – Unmute received audio
Forces unmuting of the received
audio signal
21 None
22 – Mute microphone
Mutes transmit modulation
(effectively mutes microphone
audio)
22 None
23 – Unmute microphone
Unmutes transmit modulation
(effectively unmutes microphone
audio)
23 None
74 – Audio PA
Controls the state of the audio PA
(and hence enables or disables the
speaker)
74 x
where x is the required state
(0=stand-by, 1=on, 2=mute)
None
110 – Audio volume
Sets the level of the audio volume
110 x
where x defines the required level
(any integer from 0 to 255)
None
138 – Select microphone
Selects the microphone required
138 x
where x is the required microphone
(0=control-head microphone;
1=auxiliary microphone)
None
323 – Audio tap in
Generates the audio tone
AUD TAP IN
at the specified tap point
323 x y
where x specifies the tap point
(
r2 , r5, t1 or t5 ) and y the tap type
(A=bypass in, B=combine, E=splice)
(the default is A when
y is omitted)
None
324 – Audio tap out
Outputs the audio signal at the
specified tap point to
AUD TAP OUT
324 x y
where x specifies the tap point
(
r1 , r2 , r3 , r4 , r5 , t1 , t2 , t3 or t7 )
and
y the tap type
(C=bypass out, D=split, E=splice)
(the default is D when
y is omitted)
None

17 General Information Tuneup
August 2004© Tait Electronics Ltd
Table 1.2 CCTM commands in the radio-information, radio-control and system categories
Command
Usage
Entry at keyboard Response on screen
Radio-information category
94 – Radio serial number
Reads the serial number of the
radio
94 x
where x is the serial number
(an eight-digit number)
96 – Firmware version
Reads the version number of the
radio firmware
96 QMA1F_x_y
where x is a three-character
identifier and
y is an eight-digit
version number
97 – Boot-code version
Reads the version number of the
boot code
97 QMA1B_x_y
where x is a three-character
identifier and
y is an eight-digit
version number
98 – FPGA version
Reads the version number of the
FPGA
98 QMA1G_x_y
where x is a three-character
identifier and
y is an eight-digit
version number
133 – Hardware version
Reads the product code of the
radio body and the hardware
version number
133 x
y
where x is the product code
and
y is the version number
(a four-digit number)
134 – FLASH serial number
Reads the serial number of the
FLASH memory
134 x
where x is the serial number
(a 16-digit hexadecimal number)
Radio-control category
400 – Select channel
Changes the current channel to
that specified
400 x (alternatively *x )
where
x is a valid channel number
None
System category
46 – Supply voltage
Reads the supply voltage
46 x
where x is the supply voltage in
millivolts
203 – Clear system error
Clears the last recorded system
error
203 None
204 – Read system error
Reads the last recorded system
error and the associated data
204 SysErr: x
y
where x is the error number and
y represents the associated data

Tuneup General Information 18
August 2004© Tait Electronics Ltd
Table 1.3 CCTM commands in the frequency-synthesizer and receiver categories
Command
Usage
Entry at keyboard Response on screen
Frequency-synthesizer category
72 – Lock status
Reads the lock status of the RF PLL,
FCL and LO2 respectively
72 x y z
where x is the RF PLL, y the FCL,
and
z the LO2 lock status
(0=not in lock, 1=in lock)
101 – Radio frequencies
Sets the transmit and receive
frequencies to specified values
101 xy0
where x is the transmit and y the
receive frequency in hertz
(any integer from 50 000 000 to
1000 000 000)
None
334 – Synthesizer power
Switches the frequency synthesizer
on or off via the
DIG SYN EN line
334 x
where x is the required state
(0=off, 1=on)
None
335 – Synthesizer switch
Switches the transmit-receive
switch of the frequency synthesizer
on or off via the
DIG SYN TR SW line
335 x
where x is the required state
(0=off, 1=on)
None
Receiver category
32 – Receive mode
Sets the radio in the receive mode
32 None
63 – RSSI level
Reads the averaged RSSI level
63 x
where x is the averaged level in
multiples of 0.1 dBm
376 – Front-end tuning
Sets or reads the tuning voltage for
the front-end circuitry of the
receiver
376 (to read voltage) x
where x is the front-end tuning
voltage in millivolts
376 x (to set voltage)
where
x is the front-end tuning
voltage in millivolts
(any integer from 0 to 3000)
None
378 – Receiver output level
Reads the signal power at the
output of the channel filter
(the square of the amplitude)
378 x
where x is the signal power

19 General Information Tuneup
August 2004© Tait Electronics Ltd
Table 1.4 CCTM commands in the transmitter category (part 1)
Command
Usage
Entry at keyboard Response on screen
Transmitter category
33 – Transmit mode
Sets the radio in the transmit mode
33 None
47 – Temperature
Reads the temperature in the
vicinity of the PAs
47 x
y
where x is the ADC value of the
tem-perature (an integer from 0 to
1023) and
y is the corresponding
voltage in millivolts (a value from 0
to 1200 mV)
114 – Transmitter power
Sets or reads the transmitter power
setting (compare command 326)
114 (to read value) x
where x is the current power
setting (an integer from 0 to 1023)
114 x (to set value)
where
x is the required power
setting (an integer from 0 to 1023)
None
304 – Driver bias
Sets or reads the clamp current at
the gate of the PA driver
304 (to read value) x
where x is the DAC value of the
clamp current (an integer from 0 to
255)
304 x (to set value)
where
x is the required DAC value
of the clamp current
(an integer from 0 to 255)
None
318 – Forward power
Reads the forward-power level
318 x
where x is the voltage in millivolts
corresponding to the power level
(a value from 0 to 1100 mV)
319 – Reverse power
Reads the reverse-power level
319 x
where x is the voltage in millivolts
corresponding to the power level
(a value from 0 to 1100 mV)
326 – Transmitter power
Sets the power level of the
transmitter
326 x
where x specifies the level
(0=off, 1=very low, 2=low,
3=medium, 4=high, 5=maximum)
None

Tuneup General Information 20
August 2004© Tait Electronics Ltd
Invoking CCTM Using the terminal program, place the radio in CCTM as follows:
1. Enter the character
^ to reset the radio.
2. As soon as the radio is reset, the letter
v is displayed. (If an
uppercase letter V appears, this implies a fault.)
3. Immediately the letter
v is displayed, enter the character % . (The
character % must be entered within half a second of the letter v
appearing.)
4. If the character
% is accepted, the character – is displayed in
response, and the message CL (two-digit display) or C (one-digit
display) appears on the radio’s LCD screen. This implies that the
radio has entered CCTM. If the attempt fails, repeat Steps 1 to 3.
CCTM Error Codes Once the radio is in CCTM, the CCTM commands may be entered as
shown in Table 1.1 to Table 1.5. Depending on the command, a
response might or might not be displayed. If an error occurs, an error
code will be displayed. Possible error codes are listed in Table 1.6.
Table 1.5 CCTM commands in the transmitter category (part 2)
Command
Usage
Entry at keyboard Response on screen
Transmitter category
331 – Final bias 1
Sets or reads the bias voltage for
the first PA
331 (to read value) x
where x is the DAC value of the
bias voltage (an integer from 0 to
255)
331 x (to set value)
where
x is the DAC value of the
required bias voltage
(any integer from 0 to 255)
None
332 – Final bias 2
Sets or reads the bias voltage for
the second PA
332 (to read value) x
where x is the DAC value of the
bias voltage (an integer from 0 to
255)
332 x (to set value)
where
x is the DAC value of the
required bias voltage
(any integer from 0 to 255)
None