TB8100 base station
Calibration Kit
User’s Manual
MBA-00011-07
Issue 7
April 2006
© Tait Electronics Limited April 2006
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
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of Tait Electronics Limited. All rights reserved.
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to any electronic medium or machine-readable form,
without prior written permission from Tait Electronics
Limited.
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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.
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comments, suggestions and notifications of errors,
please contact Technical Support.
Updates of Manual and Equipment
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or servicing of the equipment, Tait Electronics Limited
reserves the right to update the equipment or this
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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.
TB8100 Calibration Kit User’s Manual Contents i
Contents
Preface ..............................................................................................................iii
Typographical Conventions ..............................................................iii
Associated Documentation ...............................................................iii
Publication Record ..........................................................................iii
Basic Tasks .........................................................................................................1
Using the TB8100 Calibration Kit ..........................................................1
About the Toolbar ............................................................................2
About the Status Bar ..........................................................................2
Equipment Required ..............................................................................3
Calibration Overview .............................................................................3
Field Calibration ................................................................................4
Service Center Calibration .................................................................4
Selecting the Communications Port ........................................................5
Connecting to a Reciter Outside the Subrack .........................................5
Connecting to a Reciter via the Control Panel .......................................7
Disconnecting from the Base Station/Reciter .........................................7
Troubleshooting .....................................................................................8
Adjusting the Frequency Setup ........................................................................9
Adjusting the Receiver Lock Band .........................................................9
Tuning a UHF Receiver Front End ......................................................10
Tuning a VHF Receiver Front End ......................................................12
Adjusting the Exciter Lock Band ..........................................................14
Selecting the Exciter Sub-band .............................................................15
Calibrating the Reciter ....................................................................................16
Calibrating the Exciter ..........................................................................16
Automatically Tune the Frequency Control Loop (FCL) .................16
Calibrating the FCL .........................................................................16
Calibrating the VCO .......................................................................18
Calibrating the RSSI .............................................................................19
Audio Calibration .................................................................................20
Calibrating the Balanced Lines .........................................................20
Calibrating the Unbalanced Lines ....................................................21
Carrier Frequency Offset Adjustment
(Older Reciters) ....................................................................................23
Carrier Frequency Offset Adjustment
(Newer Reciters) ..................................................................................24
Calibrating the Power Amplifier ....................................................................27
Calibrating the PA Bias .........................................................................27
Calibrating the Forward and Reverse Detector Bias Voltages ................27
Calibrating the PA Power .....................................................................28
Troubleshooting Tips ......................................................................29
ii Contents © Tait Electronics Limited April 2006
Calibrating the Power Management Unit .................................................... 30
Calibrating the PMU Output Voltage .................................................. 30
Index .................................................................................. 34
TB8100 Calibration Kit User’s Manual Preface iii
Preface
Welcome to the TB8100 Calibration Kit User’s Manual. This manual provides
you with information about the Tait TB8100 Calibration Kit in PDF format.
You can view it online or print it if you want a paper copy. It describes how to
use Version 03.00 of the Calibration Kit.
Typographical Conventions
‘File > Exit’ means ‘click File on the menu bar, then select Exit’.
Associated Documentation
■ Online Help. The Calibration Kit also has online Help. It contains more or
less the same information as this manual. To view it, start the Calibration
Kit, then press F1 or click the Help icon on the toolbar. If you are in a dialog
box, click the Help button.
■ TBA0STU/TBA0STP CTU Operation Manual. This manual (MBA-00013-
xx) provides detailed information about the Calibration and Test Unit.
■ TB8100 Installation and Operation Manual (MBA-00005-xx).
■ TB8100 Service Manual (service centers only). A glossary of terms is available
in this manual (MBA-00016-xx).
For additional items, see the TB8100 Installation and Operation Manual and
the TB8100 Service Kit User’s Manual or online Help.
Publication Record
Version Date Description
1.0 June 2003 First release of the manual for Version 1.0.0
of the Tait TB8100 Calibration Kit software.
02.00 March 2004 Minor quality issues resolved and software
changes documented for Version 02.00.
02.01
(MBA-00011-03)
September
2004
Carrier Frequency Offset Adjustment
procedure for reciter version 00.03+ added.
PA store supply voltage and PMU output
voltage calibration added.
02.02
(MBA-00011-04)
December
2004
Changes for K-band reciters.
02.05
(MBA-00011-05)
March
2005
Minor changes for Calibration Kit software
version 02.05. L-band reciters.
02.07
(MBA-00011-06)
June 2005 Separate sections for UHF and VHF receiver
front end tuning. Selecting Exciter sub-band
for exciters with two VCOs
03.00
(MBA-00011-07)
April 2006 Murata tuning tool now not used for UHF
(H-band and K-band) receiver front end, as a
different helical filter is fitted.
1 Using the TB8100 Calibration Kit © Tait Electronics Limited April 2006
Basic Tasks
The TB8100 Calibration Kit is a Windows-based software program that allows
you to adjust the switching ranges of Tait TB8100 base stations (both receiver
and transmitter), and to flatten the receiver response across that switching range.
The TB8100 Calibration Kit is also used to calibrate the reciter, the PA, and
the PMU after servicing.
Using the TB8100 Calibration Kit
When you start the TB8100 Calibration Kit, the main program window
appears.
The main program window has four tabs. The Calibration Wizards displayed
on each tab are only visible once you are connected to the reciter or the base
station.
When the TB8100 Calibration Kit is connected to the reciter or base station,
you can view further details (such as module number, type, serial number, band,
and hardware version) about the currently selected module by clicking Show
Details.
Frequency Setup
tab
Shows the three Calibration Wizards that take you step-by-step through the
frequency setup.
Reciter Calibration
tab
Shows the seven calibration procedures that you can perform on the reciter.
The Calibration Wizard takes you step-by-step through the procedure you
have selected.
PA Calibration tab Shows the four calibration procedures that you can perform on the power
amplifier. The Calibration Wizard takes you step-by-step through the
procedure you have selected.
PMU Calibration
tab
Shows the procedure that you can perform on the PMU.
Menu bar
Toolbar
Calibration
Wizards
Status bar
TB8100 Calibration Kit User’s Manual Using the TB8100 Calibration Kit 2
About the Toolbar
The toolbar gives you quick access to commonly used menu commands. For
example, instead of selecting Base Station > Calibrate, you can click the
Calibrate icon on the toolbar.
Connect Connects the TB8100 Calibration Kit to the base station and opens the
communication channels.
Switch Base
Station
Lets you select another base station to calibrate if there are multiple base stations
in the rack (not currently supported).
Calibrate Runs the Calibration Wizard for the currently selected task.
Options Allows you to set the COM port and default calibration mode.
Help Opens the online help for the window you are currently in.
About the Status Bar
The status bar provides you with useful information that supplements the
display in the main window.
Miscellaneous messages
COM port in use
3 Equipment Required © Tait Electronics Limited April 2006
Equipment Required
You need the following equipment for field calibration:
■ Calibration and Test Unit (CTU, order code TBA0STU), which comes
complete with the cables you will need for connection to the reciter/PA and
the PC. For more information about the CTU, please refer to TN-778 The
Calibration and Test Unit.
■ Tool kit (order code TBA0ST2) which comprises tuning tools and the
required screwdrivers in a tool pouch. The ceramic-tipped Murata tuning
tool is used for most procedures, but the metal-tipped Johanson 8777 tuning
tool with its narrower blade is needed for tuning the front end of H-band
and K-band receivers.
■ 10-30 V DC power supply (if the PMU does not have a 12 V or 24 V
auxiliary power supply module)
■ RS-232 cable
■ RF attenuator (optional – depends on the setup)
You may need the following additional equipment for a service center
calibration:
■ Frequency counter
■ Modulation meter
■ RF signal source
■ AC millivoltmeter (one with a differential input may be required for
“Calibrating the Balanced Lines” on page 20)
Refer to the individual procedures for equipment setup diagrams.
Calibration Overview
Any calibration process creates digital values and a calibration date, which are
stored in the base station. The Service Kit can display the date of the last
calibration. Many calibration procedures initially clear the stored digital values.
If you do not complete the procedure or the stored digital values are outside
acceptable limits, the module is left uncalibrated. An uncalibrated reciter will go
into Download mode on startup and cannot be put into Run mode. An
uncalibrated PA generates a calibration invalid alarm.
If the procedure you are performing requires access to tuning holes, you need
to remove the reciter from the subrack and connect to it via the CTU.
The following tables summarise, for each procedure, whether or not you need
to remove the reciter from the subrack, and what equipment (in addition to a
PC with the TB8100 Calibration Kit software) you will need.
TB8100 Calibration Kit User’s Manual Calibration Overview 4
Field Calibration
The following procedures can be carried out in the field.
Service Center Calibration
The following additional procedures may need to be carried out after a module
has been serviced.
Note: Replacing or repairing a board module may mean that the
module’s product code, product type (frequency band), serial
number, and/or hardware version need to be re-entered or altered.
To do this, your Calibration Kit needs a dongle. The Service Manual indicates
when a module detail needs re-entering or altering.
Reciter
Procedure Connection Equipment Required
Adjusting receiver lock band Outside subrack Murata tuning tool, CTU
Tuning the receiver Outside subrack Murata tuning tool,
Johanson tuning tool (for Hband and K-band reciters),
CTU
Adjusting exciter lock band Outside subrack Murata tuning tool, CTU
Adjusting the carrier frequency
offset
Depends on
reciter
Murata tuning tool,
Frequency counter, RF
attenuator (only if using PA)
Procedure Connection Equipment Required
Automatically tuning FCL Inside subrack None
Calibrating the FCL modulation Outside subrack Murata tuning tool, CTU,
modulation meter, RF
attenuator (only if using PA)
Calibrating the VCO modulation Outside subrack Murata tuning tool, CTU,
modulation meter, RF
attenuator (only if using PA)
Calibrating the RSSI Inside subrack RF signal source
Calibrating the balanced lines Inside subrack CTU, AC millivoltmeter
(perhaps with differential
input)
Calibrating the unbalanced lines Inside subrack CTU, AC millivoltmeter
5 Selecting the Communications Port © Tait Electronics Limited April 2006
Power Amplifier
Power
Management Unit
Selecting the Communications Port
Before you connect to a base station, you should first define the
communications (COM) port that you want to use.
To select the COM port
1. Select Tools > Options.
2. Select the port that you want to use from the COM Port list.
Note: The available COM ports are detected by the program and
appear in the list.
3. Click OK.
The COM port you selected is now shown on the status bar.
Connecting to a Reciter Outside the Subrack
Field calibration procedures require access to the tuning holes, so you need to
remove the reciter from the subrack and connect to it using a CTU.
Equipment ■ Calibration and test unit (CTU)
■ An IBM compatible PC
■ 10-30 V DC power supply
■ 16-way cable
■ RS-232 cable
Procedure Connection Equipment Required
Calibrating the PA bias Inside subrack None required
Calibrating the forward &
reverse detector bias voltages
Inside subrack None required
Calibrating the PA power Inside subrack None required
Procedure Connection Equipment Required
Output voltage calibration Inside subrack Digital multimeter
TB8100 Calibration Kit User’s Manual Connecting to a Reciter Outside the Subrack 6
Setup
To connect to the reciter
1. Remove the reciter from the subrack (for instructions, see the Installation
and Operation Manual).
2. Set up the equipment as follows.
■ Connect the reciter to the calibration and test unit (CTU) using the 16-
way cable.
■ Connect your computer to the CTU by plugging the RS-232 cable into
the programming port.
■ Using the power cable supplied in the calibration test kit, connect the
reciter to the 10-30 V DC power supply, but do not power it up yet. If
the base station’s PMU has a 12 V or 24 V auxiliary power output, you
can use this as the power supply. A connector is supplied with the CTU.
3. Start the TB8100 Calibration Kit program, and check that the correct COM
port is selected.
4. Click Connect to start the connection process.
5. When you see the “Waiting for logon prompt from Reciter” screen, power
up the reciter. If it is already on, turn it off, and then on.
6. When the TB8100 Calibration Kit program has successfully connected to
the reciter, the Calibration Wizards are displayed in the main window.
You are now ready to tune and calibrate the reciter.
3
6
4
5
2
1
7
8
1 PC 5 16-way cable
2 RS-232 cable 6 Reciter
3 CTU 7 Power cable
4 Programming port 8 10-30 V DC power supply
7 Connecting to a Reciter via the Control Panel © Tait Electronics Limited April 2006
Connecting to a Reciter via the Control Panel
For calibration procedures that do not require access to tuning holes, you can
leave the reciter in the subrack and connect your PC to the control panel as
follows.
Equipment ■ An IBM compatible PC
■ RS-232 cable
Setup
To connect to a reciter in the subrack
1. Connect your computer to the base station by plugging the RS-232 cable
into the serial port of the base station’s control panel.
Note: If the base station is fitted with a TaitNet RS232 system
interface, the control panel serial port is disabled; connect to the
serial port at the reciter rear instead.
2. Start the TB8100 Calibration Kit program, and check that the correct COM
port is selected.
3. Click Connect to start the connection process.
4. As soon as you see the “Waiting for logon prompt from Reciter” screen,
power up the base station. If it is already on, turn it off, and then on.
5. When the TB8100 Calibration Kit program has successfully connected to
the base station, the Calibration Wizards are displayed in the main window.
You are now ready to carry out calibration procedures.
Disconnecting from the Base Station/Reciter
Once calibration is completed, click Disconnect before exiting the Calibration
Kit.
Important: Disconnecting when a calibration process is not
completed may leave the base station in an uncalibrated state.
4
1
3
2
1 Base station 3 RS-232 cable
2 Serial port 4 PC
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