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TMAA13 Power Supply
User’s Guide
MMZ-00002-04 · Issue 4 · May 2012
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Contact information
Tait Communications
Corporate Head Office
Tait Limited
P.O. Box 1645
Christchurch
New Zealand
For the address and telephone number of regional offices, refer to our
website: www.taitradio.com
Technical Support
For assistance with specific technical issues, contact Technical Support:
http://support.taitradio.com/home
Copyright and trademarks
All information contained in this document is the property of Tait Limited.
All rights reserved. This document 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
Limited.
The word TAIT and the TAIT logo are trademarks of Tait 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 document. Tait Limited
accepts no responsibility for damage arising from use of the information
contained in the document or of the equipment and software it describes. It is
the responsibility of the user to ensure that use of such information,
equipment and software complies with the laws, rules and regulations of the
applicable jurisdictions.
Enquiries and Comments
If you have any enquiries regarding this document, or any comments,
suggestions and notifications of errors, please contact your regional Tait
office.
Environmental responsibilities
Tait Limited is an environmentally responsible company which supports
waste minimization, material recovery and restrictions in the use of hazardous
materials.
The European Union’s Waste Electrical and Electronic Equipment (WEEE)
Directive requires that this product be disposed of separately from the
general waste stream when its service life is over. For more information about
how to dispose of your unwanted Tait product, visit the Tait WEEE website at
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www.taitradio.com/weee. Please be environmentally responsible and dispose
through the original supplier, or contact Tait Limited.
Tait Limited also complies with the Restriction of the Use of Certain
Hazardous Substances in Electrical and Electronic Equipment (RoHS)
Directive in the European Union.
In China, we comply with the Measures for Administration of the Pollution
Control of Electronic Information Products. We will comply with
environmental requirements in other markets as they are introduced.
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Important safety information
Please read these warnings before using the TMAA13 power supply.
Warning: Safe operation
To reduce the risk of fire or electric shock, please adhere to these
warnings:
■ Moisture: Do not expose this appliance to rain or moisture.
■ Cleaning: Unplug the power supply from the mains power outlet
before cleaning. Switching off the power supply will not reduce
this risk.
■ Ventilation: Place the power supply in an area that will allow air
to flow freely around the unit to prevent overheating. Do not
block or obstruct any of the ventilation openings on the unit.
Warning: Electrical connections
To reduce the risk of fire or electric shock, please adhere to these
warnings:
■ Do not connect two or more power supplies together.
■ The power supply should be properly connected and grounded.
Use the provided AC power cable to connect the power supply
to a mains power outlet that is properly installed and grounded,
in accordance with all local codes and ordinances. If the power
supply cord is damaged, it must be replaced with the same type
to comply with safety requirements.
■ Never alter the provided AC cable or plug. If the plug does not fit
into the outlet, have an appropriate outlet installed by a certified
electrician.
■ Use an extension cord only when absolutely necessary. The
extension cord must have the same voltage and power rating as
the original power supply plug. Make sure that the pins on the
plug are of the same number, size and shape as those of the
original power supply plug.
■ Do not connect a backup battery directly to the power supply.
■ Do not use the power supply to directly charge a battery.
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Warning: Servicing
This power supply should be serviced by a qualified service
technician. Incorrect assembly may result in electric shock or fire.
We recommend that you return the power supply to a qualified Tait
Limited dealer for all services and repairs.
Warning: High voltage levels
Some of the components inside the power supply can operate at
voltage levels that may be lethal.
User information
The TMAA13 is a switched mode power supply. It converts mains
input voltage to regulated 13.8V
using pulse-width modulation
DC
(PWM) control.
To avoid any issues that may be caused by simultaneous
transmissions, there should be one TMAA13 per radio.
The TMAA13 power supply is protected against short circuits, as
well as over-current and over-voltage conditions. It also offers overtemperature shutdown.
power supply
mains cable
Check the mains supply voltage
Before you plug in and turn on the power supply for the first time,
please check the mains supply voltage.
The voltage rating of the power supply is printed on a label on the
bottom of the unit. Verify that it corresponds with your local mains
supply voltage (that is, 120V
or 230VAC).
AC
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The variations in mains supply voltage under which the TMAA13
power supply can operate, are listed in the ‘Electrical specifications’
on page 8.
Turning the power supply on
The power supply has an illuminated on/off switch, marked “I” for on
and “O” for off. Turn the power supply on by pressing the “I” side of
the switch. The indicator inside the switch will illuminate.
Turning the power supply off
Before you turn the power supply off, turn the radio off as described
in the user documentation for the radio.
To turn the power supply off, press the “O” side of the power switch.
Cooling
The TMAA13 power supply is cooled by convection and forced air
cooling (that is, normal airflow around the power supply in
combination with a temperature controlled fan to improve cooling at
higher levels of use). The fan is activated by a sensor when the
temperature rises above 70°C.
Caution: Place the power supply in a well ventilated and cool area.
Do not block the ventilation openings on the sides, back or top of the
unit.
Servicing
By following the procedures in this user’s guide, and by exercising
normal care, the power supply will give you trouble-free service for
many years. However, when required, servicing should be carried out
by a qualified service technician. While within the warranty period,
servicing must be carried out by your Tait dealer.
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Troubleshooting
Power switch does not illuminate when turned on
Probable cause:
inside the power supply is blown.
No power in the AC outlet, or the main input fuse
Suggested solution: Check the mains power outlet, or replace the
mains input fuse inside the unit (refer to the input fuse ratings on
page 8).
Notice: Replacing the fuse must only be done by a qualified service
person.
Fuse blows when power is turned on
Probable cause: Unit is defective.
Suggested solution: Contact Technical Support.
Output voltage is 0V or very low
Verify this fault condition with a multimeter.
Probable cause: The unit is in current limit condition.
Suggested solution: Check that the output terminals have not
short-circuited.
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Electrical specifications
TMAA13 power supply
Input voltage
TMAA13-22 100 to 130V
TMAA13-21
TMAA13-23
TMAA13-24
Output voltage 13.8V
200 to 250V
200 to 250V
200 to 250V
DC
Output ripple
10A load
full load
3mV
5mV
rms
rms
Output noise
10A load
full load
95mV
115mV
Output current, continuous 23A
pp
pp
60Hz (UL approved)
AC
50Hz (CE approved)
AC
50Hz (CE approved)
AC
50Hz (CE approved)
AC
Current limit 25A
Protection Over-current
Short-circuit
Over-voltage
Over-temperature shutdown
Input fuse rating
TMAA13-22 6.3A
TMAA13-21
TMAA13-23
TMAA13-24
4A
4A
4A
Fuse type 5mm x 20mm glass, 250 V, fast blow
Notice: Specifications may change without prior notice.
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