Air-Bus TDM880i User manual

PS11129BENAC01
06/2017
TDM880i
Instruction Manual

PS11129BENAC01 TDM880i - Instruction Manual
2/36
This document is the property of Airbus DS SLC and should not be copied or circulated without permission.
DECLARATION OF CONFORMITY We, Airbus Defence and Space Oy, Hiomotie 32, 00380
Helsinki, Finland, declare under our sole responsibility that the product TDM880i is in
conformity with the provisions of the following Council Directives:
• 2011/65/EC (ROHS).
•
2014/53/EU (Radio Equipment Directive).
Copies of the Declaration of Conformity can be found at https://cinfodin-airbusds.com
When installed or integrated as a part of another electrical device or interfaced with an external device, the
integrator or manufacturer of the aforesaid device or assembly (’the End Product Manufacturer/System Integrator’)
is responsible for compliance with all applicable local and other regulations, including but not limited to EMC, SAR
and safety regulations, and must obtain all necessary approvals and permits concerning the final device or
assembly.
The above mentioned Declaration of Conformity by Airbus Defence and Space Oy concerns the TDM880i as a
standalone product. The End Product Manufacturer/System Integrator has the responsibility of providing separate
Declaration of Conformity concerning the whole system/application to which TDM880i is installed.
Airbus Defence and Space Oy disclaims any and all liabilities in respect of the aforesaid.
Copyright © 2015-2017 Airbus DS SLC. All rights reserved.
Airbus Defence and Space® is a registered trademark of Airbus Defence and Space. Other product names,
trademarks or other identifiers mentioned in the document may be trademarks of their respective companies and
are mentioned for information purposes only.
The document is confidential and contains legally privileged information. The document may only be used for the
purpose for which it is submitted. Reproduction, transfer, distribution or storage of part or all of the contents in this
document in any form without the prior written permission of Airbus Defence and Space is prohibited.
Airbus Defence and Space operates a policy of continuous development. Airbus Defence and Space reserves the
right to make changes and improvements to any of the products described in this document, and the right to revise
this document or withdraw it at any time without prior notice.
Airbus Defence and Space will reasonably ensure that the information provided in this document is free from
material errors and omissions. However, the suggestions, directions, comments and statements made in the
document (e.g. regarding the compatibility, performance and functionality of mentioned hardware and software)
are not intended to be and cannot be considered as binding. The contents of this document are provided "AS IS".
The customer assumes full responsibility for using the document or any part of it. All comments and feedback are
welcomed by Airbus Defence and Space and are used as part of the continuous development and improvement of
Airbus Defence and Space’s products, services and the document. Except as required by applicable law, no
warranties of any kind, either express or implied, including, but not limited to, the implied warranties of
merchantability and fitness for a particular purpose, are made in relation to the accuracy, reliability or contents of
this document.
To the maximum extent permitted by the applicable law, under no circumstances shall Airbus Defence and Space
be responsible for any loss of data or income or any special, incidental, consequential or indirect damages
howsoever caused.
The availability of particular products may vary by region. Please check with the Airbus Defence and Space
reseller nearest to you.
The use and operation of this device is subject to permission: for details contact your local frequency authority.
Includes RSA BSAFE cryptographic or security protocol software from RSA Security.
The crossed-out wheeled bin means that within the European Union the product must be taken to separate
collection at the product end-of-life. This applies to your device but also to any enhancements marked with
this symbol. Do not dispose of these products as unsorted municipal waste. Please deliver this product after
operational life to your distributor or sales representative for recycling.

TDM880i - Instruction Manual PS11129BENAC01
3/36
This document is the property of Airbus DS SLC and should not be copied or circulated without permission.
Contents
1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Company policy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Typographic conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2. IMPORTANT SAFETY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Operating environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Medical devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Active implanted medical devices (AIMD). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Hearing aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Vehicles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Aircrafts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Potentially explosive environments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Care and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3. DEVICE OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
External AC Power Supply ACR-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
DC Power Cable CA-124 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Data Cable Adapter CA-125 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Flashing and Parametering Adapter CA-123 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
TETRA Antenna Cable CA-126 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
GPS Cable CA-127 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
PC Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4. INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Safety warnings and cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Environmental conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Tools and installation materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Cable types, making of cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Installation procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Installing the TDM880i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Powering up considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Connecting the power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Connecting the power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Special considerations for vehicles, vessels etc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Lightning protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Starting up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Starting up after flash / parametrization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Verifying the AT functionality. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Verifying the parametrization functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5. FEATURE GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Feature overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Tracking and positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Sleep mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Sleep mode activation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Sleep mode termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Periodic reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
NMEA output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Time recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Recovery from power failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Temperature protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Load management (group management + FACCH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Alert condition and notification feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
AT commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
I/O lines functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Ignition sense (IGS ) functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6. PARAMETER REFERENCE (TDM880I SPECIFIC PARAMETERS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Sleep mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
TETRA Terminal Programming Tool (TPT). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
AT interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
SDS interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Periodic reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Location tracking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

PS11129BENAC01 TDM880i - Instruction Manual
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This document is the property of Airbus DS SLC and should not be copied or circulated without permission.
TETRA Terminal Programming Tool (TPT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
AT interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
SDS interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Alerting feature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
TETRA Terminal Programming Tool (TPT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
AT interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
SDS interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
IGS feature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7. CONNECTOR INTERFACES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Connector placement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
AT interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
I/O lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
GPS antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
TETRA antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
8. TECHNICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
9. GLOSSARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

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INTRODUCTION
1. INTRODUCTION
 General
This document describes the TDM880i TETRA Data Module, including the key technical data, hardware,
installation, and features of the device.
The radio described in this manual is approved for use in the TETRA network. Contact your service provider for
more information about networks.
When using the features in this radio, obey all laws and respect the privacy and legitimate rights of others.
Company policy
Our policy is one of continuous development; details of all technical modifications will be included with service
bulletins. While every endeavour has been made to ensure the accuracy of this document, some errors may exist. If
any errors are found by the reader, Airbus Defence and Space Oy should be notified in writing.
Please state:
Title of the Document + Issue Number/Date of publication
Latest Amendment Number (if applicable)
Page(s) and/or Figure(s) in error
Please send to:
Airbus Defence and Space Oy
PO Box 592
FIN-40101 Jyväskylä
FINLAND
or e-mail to:
[email protected]
 Typographic conventions
Notes (including cautions, tips, warnings and general notes) call your attention to information.
The following symbols are used in the notes:
1.
Task sequence symbol. Indicates the start of a procedure.
WARNING:
Warnings alert to dangers which may cause loss of life, physical injury or ill health in any form.
CAUTION:
Cautions indicate possible damage to equipment or a possibility of loss of data.
Note:
Notes indicate additional information such as recommendations or tips.

IMPORTANT SAFETY INFORMATION
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2. IMPORTANT SAFETY INFORMATION
 Operating environment
Remember to follow any special regulations in force in any area, and always switch off your radio when its use is
prohibited or when it may cause interference or danger. Use the radio only in its normal operating positions.
To maintain compliance with radio frequency exposure guidelines, only use enhancements approved by Airbus
Defence and Space for use with this radio.
Using two TETRA devices in close proximity (in the same vehicle, for example) may cause them to interfere with
each other. If you experience such interference, separate the two devices until the interference stops.
 Medical devices
Operation of any radio transmitting equipment may interfere with the functionality of inadequately protected medical
devices. Consult a physician or the manufacturer of the medical device to determine if they are adequately shielded
from external RF energy or if you have any questions.
Switch off your radio in health care facilities or near medical devices when any regulations posted in these areas
instruct you to do so. Hospitals or health care facilities may be using equipment that could be sensitive to external
RF energy.
Active implanted medical devices (AIMD)
To avoid potential interference with persons carrying active implanted medical devices (AIMD), it is important to
follow and respect the AIMD manufacturers’ safety recommendations.
In general, persons with AIMD should keep the radio at least 20 cm (7.9 in) away from the AIMD device. If you have
any reason to suspect that interference is taking place, switch off your radio immediately and contact the nearest
medical service supporting the interference AIMD.
Hearing aids
Some digital wireless terminals may interfere with some hearing aids. If interference occurs, consult your service
provider.
 Vehicles
RF signals may affect improperly installed or inadequately shielded electronic systems in motor vehicles. These
systems include, for example, electronic fuel injection systems, electronic antiskid (antilock) braking systems,
electronic speed control systems, and air bag systems. For more information, check with the vehicle or additional-
equipment manufacturer or its representative.
Only qualified personnel should service the radio or install the radio in a vehicle. Faulty installation or service may be
dangerous and may invalidate any warranty that may apply to the radio.
Check regularly that all radio equipment in your vehicle is mounted and operating properly.
Do not store or carry flammable liquids, gases, or explosive materials in the same compartment as the radio or its
parts and enhancements.
For vehicles equipped with an air bag, remember that air bags inflate with great force. Do not place objects,
including installed or portable wireless equipment, in the area over the air bag or in the air bag deployment area. If
in-vehicle wireless equipment is improperly installed and the air bag inflates, serious injury could result.
 Aircrafts
Using or installing this radio in an aircraft is prohibited. Switch off your radio before boarding an aircraft. The use of
wireless teledevices in an aircraft may be dangerous to the operation of the aircraft or disrupt the wireless telephone
network, and may also be illegal.

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IMPORTANT SAFETY INFORMATION
Potentially explosive environments
Using or installing this radio in an area with a potentially explosive atmosphere is prohibited.
Switch off the radio when in any area with a potentially explosive atmosphere and obey all signs and instructions.
Potentially explosive atmospheres include areas where you would normally be advised to turn off your vehicle
engine. Sparks in such areas could cause an explosion or fire resulting in bodily injury or even death.
Switch off the radio near refuelling points such as gas pumps at service stations.
Observe restrictions on the use of radio equipment in fuel depots, storage and distribution areas, chemical plants, or
where blasting operations are in progress.
Areas with a potentially explosive atmosphere are often, but not always, clearly marked. They include below-deck
on boats, chemical transfer or storage facilities, vehicles using liquefied petroleum gas (such as propane or butane),
and areas where the air contains chemicals or particles such as grain, dust, or metal powders.
 Care and maintenance
The TDM880i TETRA Data Module is a product of superior design and craftsmanship and should be treated with
care. The suggestions below will help you fulfil any warranty obligations and enjoy this product for many years.
• Keep the radio and all its parts and accessories out of reach of small children.
• Keep the radio dry. Precipitation, humidity and all types of liquids or moisture can contain minerals that will
corrode electronic circuits.
• Do not use or store the radio in dusty, dirty areas. Its moving parts can be damaged.
• Do not store the radio in hot areas. High temperatures can shorten the life of electronic devices, damage batteries
and warp or melt certain plastics.
• Do not store the radio in cold areas. When it warms up (to its normal temperature), moisture can form inside,
which may damage electronic circuit boards.
• Do not drop, knock or shake the radio. Rough handling can break internal circuit boards.
• Do not use harsh chemicals, cleaning solvents, or strong detergents to clean the radio.Use only detergents
meant for electronic devices and printed circuit boards.
• Do not paint the radio. Paint can clog the moving parts and prevent proper operation.
• Use only the accessory antennas or other approved antennas. Unauthorised antennas, modifications or
attachments could damage the phone and may violate regulations governing radio devices.
All of the above suggestions apply equally to the product, charger or any accessory.
Note:
The Global Positioning System
The Global Positioning System (GPS) is operated by the United States government, which is solely
responsible for the accuracy and maintenance of the system. The accuracy of location data can be affected
by adjustments to GPS satellites made by the United States government and is subject to change with the
United States Department of Defense civil GPS policy and the Federal Radionavigation Plan. Accuracy can
also be affected by poor satellite geometry.
Availability and quality of GPS signals may be affected by buildings and natural obstacles as well as weather
conditions. The GPS receiver should only be used outdoors to allow reception of GPS signals. The GPS
should not therefore be used for precise location measurement and you should never rely solely on location
data from the GPS receiver.

DEVICE OVERVIEW
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3. DEVICE OVERVIEW
The TDM880i is used as a data-only radio allowing applications to send/receive SDS messages as well as use IP
data services via a PEI-based serial interface.
The PCB connector has a 3-wire serial port with 2.78 V voltage levels for data communications. The RS232 voltage
levels and HW flow control are provided with accessories.
The TDM880i also provides a set of digital I/O lines that can be configured as inputs or outputs. The outputs can be
controlled by SDS messages; the inputs can be used to trigger a status message or location sending to predefined
destinations. For the I/O lines, a 15-pin board-to-wire connector is provided.
The radio module features a GPS receiver for positioning applications. An external active GPS antenna is required
for the receiver. A passive GPS antenna must not be used.
The radio module does not have an integrated TETRA antenna. Thus, a connector for an external antenna is
provided. A combined TETRA/GPS antenna can also be used.
Note: Simultaneous use of AT commands and IP data is not supported.
Figure 1 TDM880i radio module
Figure 2 LEDS in TDM880i radio module

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DEVICE OVERVIEW
The module provides various LED indications for the user (see Figure 2):
•
Power On : The LED is lit when the power is switched on. Note that this indicates the actual operational status of
the module, not the existence of a power supply. Even if the supply power is present, the LED is not lit unless the
radio module itself is switched on.
If the red Power On LED is blinking, the module is in sleep mode. For more information, see Sleep mode on
page 17.
•
In Service : The LED is lit when the radio has successfully registered into the network and the field strength is
good enough for communications.
If the green In Service LED is blinking, the module is searching for the network.
•
GPS Fix : When the GPS has a fix and is aware of its position, the LED is lit.
If the green GPS Fix LED is blinking, the module is searching for the GPS fix.
SW upgrades or parametering is done via the I/O connector using cables made for this purpose. For more
information, see Section I/O cable on page 13.
 Accessories
The accessories are not included in the standard sales package. They are available as separate items and priced
separately.
External AC Power Supply ACR-1
The external power supply ACR-1 is used to supply +13.6 VDC for the device from AC mains.
The AC power supply has various mains plug options available (UK, US, IEC).
The external AC power supply is intended for indoor use in weather protected dry conditions only. The power supply
is CE approved and conforms to EU EMC requirements.
DC Power Cable CA-124
The DC power cable CA-124 has a matching connector for connection to the TDM880i. The other end of the cables
are stripped bare wire ends (= no connector). The thickness of wire ends is AWG12 (equals to 4.0 mm²). The cable
includes two fuse holders for the ATO fuses. The fuse must be 5 A for 12 V line and 1 A for the IGS line.
Data Cable Adapter CA-125
The data cable adapter must be used together with a DLR-3T for connecting data between the PC and TDM880i.
The adapter has a 12-pin matching board-to-wire connector for the TDM880i and a keyed RJ-45 connector for the
DLR-3T.
Flashing and Parametering Adapter CA-123
The flashing and parametering adapter must be used together with a DAU-9S. The adapter has a 15-pin matching
board-to-wire connector for the TDM880i and a RJ-45 connector for the DAU-9S.
TETRA Antenna Cable CA-126
This antenna cable is an adapter to connect an external TETRA antenna to the TDM880i. The cable has a MMBX
matching connector for the TDM880i and for the external antenna a SMA(F).
Select the best suitable good quality antenna for the use case. Airbus offers a selection of antennas, for which you
can find more information in the accessory catalogue. Alternatively, consult your local AIRBUS distributor for the
antenna selection.
The TDM880i frequency band is 380-400MHz and 410-430MHz. Select an antenna which serves best in the used
RF band.
GPS Cable CA-127
This antenna cable is an adapter to connect an external GPS antenna to the TDM880i. The cable has an IPX
matching connector for the TDM880i and for the external GPS antenna a SMA(F).

DEVICE OVERVIEW
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Select the best suitable good quality antenna for the use case. Airbus offers a selection of antennas, for which you
can find more information in the accessory catalogue. Alternatively, consult your local AIRBUS distributor for the
antenna selection.
 PC Software
Parametering is based on the TETRA Terminal management tool TAQTO 2.6 or newer version.

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INSTALLATION
4. INSTALLATION
 Safety warnings and cautions
ESD protection
Airbus Defence and Space requires that the TDM880i data radio's service points have sufficient ESD protection
(against static electricity) when servicing the product. Any product which has its covers removed must be handled
with ESD protection. To replace the covers, ESD protection must be applied. All electronic parts of the product are
susceptible to ESD.
All ESD-sensitive parts must be packed in metallized protective bags during shipping and handling outside any ESD
Protected Area (EPA).
Every repair action involving opening the product or handling the product components must be done under ESD
protection.
ESD-protected spare part packages MUST NOT be opened/closed outside of an ESD Protected Area.
For more information and local requirements about ESD protection and ESD Protected Area, contact your local
Airbus Defence and Space After Market Services representative.
WARNINGS:
1. If the device is installed in a vehicle, care must be taken on installation in vehicles fitted with electronic
engine management systems and anti-lock braking systems. Under certain fault conditions, emitted RF
energy may affect to operation of these systems. If necessary, consult the vehicle dealer/manufacturer to
determine the immunity of vehicle electronic systems to RF energy.
2. The radio must not be operated in areas likely to contain potentially explosive atmospheres, for example
petrol stations (service stations), blasting areas etc.
3. Operation of any transmitting radio equipment may interfere with the functionality of inadequately
protected medical devices. Consult a physician or the manufacturer of the medical device if you have any
questions. Other electronic equipment may also be subject to interference.
CAUTIONS:
1. Servicing and alignment must be undertaken by qualified personnel only.
2. Ensure that all work is carried out at an anti-static workstation and that an anti-static wrist strap is worn.
3. Ensure that solder, wire or foreign matter do not enter in to mechanics of the radio, as damage may result.
4. Use only approved components as specified in the parts list.
5. Ensure all components, modules screws and insulators are correctly re-fitted after servicing and
alignment. Ensure all cables and wires are repositioned correctly.
6. It is recommended that the radio is powered down before disconnecting or switching off the radio's battery
or other input power supply. This method ensures the integrity of the file system. Make sure that the
power is really switched off (the powering down takes about 3 seconds after which the Power On LED
goes off).

INSTALLATION
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Environmental conditions
The TDM880i can be installed in an environment meeting the specifications shown in Table 1.
 Tools and installation materials
The TDM880i is to be mounted on mechanics using ø 3 mm screws (5 pcs) suitable for a printed circuit board. The
screw type depends on the material (metal/wood/plastic). For the detailed dimensions of the TDM880i, see Figure
10 and Figure 11.
Cable types, making of cables
Depending on your application and its environmental conditions, you should consider the requirements relevant to
your cables, for example:
• Direct exposure to sunlight
• Common chemicals such as
• alcohol
• isopropanol
• petrol
• sun lotion and hand creams
• insecticides.
All the cables and other materials must be selected so that they tolerate the conditions in your application and its
environment.
Power cable
The Airbus Defence and Space power cable CA-124 consists of a matching board-to-wire connector and of three
separate stripped wire ends. The wire ends should be connected to a power supply (to a battery or another DC
supply) so that the black wire is GND (0V), the green wire is the IGS signal, and the red wire is the VCC signal (10.6
- 16.0 V). The maximum recommended length of the power cable is 1.5 meters. If a longer cable is needed, the
voltage drop and inductance of the cable should be taken into consideration; fast load transients may cause the
input voltage to drop below the operational limits of the device.
• Cable diameter minimum AWG 14
• The pinout is given in Section Power supply on page 31.
• Recommended cable suppliers: Carol Cable, Dearborn, Belden, Alpha Wire, West Penn Wire.
• Connector suppliers: Tyco Electronics, Conec, Amphenol, Molex, JST.
PARAMETER RANGE
Operating temperature -20…+55°C
Humidity Up to 95%, non-condensing
Vibrations and shocks According to ETSI EN 300 019-2-5 V3.0.0 (5M3), installations only inside
vehicles.
According to ETSI EN 300 019-2-6 V2.1.2 (6M3)
IP Classification Not applicable
EMC & SAR EMC approved according to EU regulations.
SAR is not evaluated as the device is not a handheld device.
Table 1 TDM880i environmental conditions
WARNING: Do not install the TDM880i in a dusty environment. If the module and the heat sink are dusty,
they can overheat.
WARNING: When cutting and joining cables, take care not to drop pieces of cables and thin copper wires on
the TDM880i module, because they can cause short-circuits in the module.

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INSTALLATION
I/O cable
Airbus Defence and Space does not provide any kind of I/O cables. The system integrator must make the cables
according to the needs of the applications.
All customer-specific I/O pins are 5 V logic level compatible. The pinout is given in Section I/O lines on page 32. The
maximum load for a single I/O line is 20 mA. Note that the total I/O load should be limited to 160 mA (all I/O pins
combined).
• Recommended cable suppliers: Carol Cable, Dearborn, Belden, Alpha, West Penn Wire. A multi-wire cable is
recommended, the cable size depends on the chosen connector (may vary from AWG20 to AWG28).
• Connector suppliers: Tyco Electronics, Conec, Amphenol, Molex.
Data cable
The Airbus Defence and Space data cable CA-123 consists of a matching board-to-wire connector and a keyed RJ-
45 connector for the DLR-3T cable. For custom-made cables, Airbus Defence and Space recommends to use the
following suppliers:
• Cable suppliers: Carol Cable, Dearborn, Belden, Alpha, West Penn Wire.
A multi-wire cable is recommended. The cable size depends on the chosen connector (may vary from
AWG20 to AWG28).
• Connector suppliers: Tyco Electronics, Conec, Amphenol, Molex.
TETRA RF cable
The connector of the TDM880i board is a 50  impedance-matching MMBX (Huber+Suhner 82_MMBX-S50-0-1/
111_N). For custom-made cables, use a 50
 low-loss cable with a matching connector. Use a proper cable size for
the connector selected.
An optional accessory (CA-126) is available in Airbus Defence and Space to convert from a MMBX to a TNC
(female).
GPS RF cable
The connector of the TDM880i board is a 50  impedance-matching IPX connector (female) (Hirose U.FL-R-SMT-
1(10).
For custom-made cables, use a 50
 low-loss cable with a matching connector. Use a proper cable size for the
connector selected, for example RG58C/U, RCG316U or RG142B/U.
An optional accessory (CA-127) is available in Airbus Defence and Space to convert from a IPX to a SMA (female).
 Installation procedure
It is recommended that the parameter and network configuration of the radio is done before its installation.
Installing the TDM880i
1. Check and clean the surface the radio module is to be installed on. Also make sure that the mechanics is suitable
for the radio module. If you are uncertain what the installation procedure is or if the mechanics selected can be
used with the radio module, consult the retail dealer.
The components on the TDM880i board are not mechnically protected. Therefore, ensure that the board does
not come into contact with any external equipment, cables or surfaces when mounted to avoid damaging the
TDM880i or causing short circuits
.
Always ensure that there is sufficiently space around the heatsink for ventilation, and that the enclosure, if any, is
sufficiently cooled and/or ventilated. In certain conditions and usage forced air-cooling may be necessary.
2. Check that you have the tools and mounting screws that are suitable for the material the radio is to be installed
on, and the accessories needed for the installation and operation of the TDM880i.
3. Remove the radio from the package and dispose the packing materials according to the local instructions.
WARNING: Remember that the radio module is ESD sensitive.

INSTALLATION
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4. Place the radio on the mechanics as recommended. Also ensure that all the mounting holes of the printed circuit
board are on the same level. This reduces mechanical stress of components and connectors on the board, and
guarantees a longer product lifetime. Never mount the board in a manner that the mounting arragement causes
twisting or bending to it.
5. Fasten the radio using mounting screws and procedures suitable for the surface material. Do not overtighten the
screws.
6. Connect the GPS antenna.
Optional
Accurate torque must be used for the RF connectors
1
:
• for the GPS SMA connector in CA-127, the torque needed is 0.34…0.57 Nm (material: brass).
For lightning protection, see Section Lightning protection on page 15.
The GPS antenna is not needed if the GPS functionality of the radio is not used.
7. Connect the TETRA antenna.
Accurate torque must be used for the RF connectors
1
:
• for the TETRA TNC connector in CA-126, the torque needed is 0.46…0.69 Nm (material: brass).
For lightning protection, see Section Lightning protection on page 15.
The TETRA antenna is not needed if the TETRA functionality of the radio is not used.
8. Connect the IO cable. Optional
IO cabling is not needed if the IO functionality of the radio is not used.
9. Connect the serial/AT cable.
Optional
The serial/AT cable is not needed if the AT functionality of the radio is not used.
10.Ensure that all the cables which are connected to the radio module are fastened in a manner that does not cause
bending, twisting, pushing, pulling, or vibrating in the connectors of the radio.
11.Connect the power cable. Set the IGS signal (the green wire in the power cable) to supply voltage. The red
Power On LED lights up.
12.If the GPS is ON, the green GPS LED (the outer LED) starts blinking. If the GPS antenna is attached, the LED
lights up (continuously) when the radio has a GPS fix.
For information on using the GPS functionality, see Section Tracking and positioning on page 17 .
13.If the radio is configured with the network parameters, the green LED in the middle starts blinking. If the TETRA
antenna is attached and the radio is in network coverage, the LED lights up when the radio has network service.
 Powering up considerations
Connecting the power supply
The prerequisites to power up the TDM880i are the following:
• a main DC supply (10.6…16.0 V) in the connector X104, pins 1,2,3. (6,7,8 = GND)
• at least one of the three IGS signals must be held high.
 Cabling
Connecting the power supply
DC input from 5A and 1A (IGS) fused 12 V power source line. Make sure that the matching board is properly
attached to the wire connector.
1. When the TDM880i's own accessory antenna is used, the above-mentioned torque values are valid for both ends of the antenna ca-
ble. If you use other antennas/cables/connectors than the ones listed as TDM880i accessories, the valid torque values for those must
be checked from their manufacturer. The above-mentioned values are valid for the TDM880i connectors in this case, too. For more
information on how to fix the TDM880i accessory antenna (including the valid torque value), see the leaflet provided with the antenna
package.
Note: Every IGS signal has its own logic ’high’ level, see Table 2.

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INSTALLATION
Special considerations for vehicles, vessels etc.
Mount the device and all the cables securely to the installation base in order to avoid product damage due to shocks
and vibrations. Sharp bending of cables, especially RF cables, must be avoided.
The positive voltage must be taken directly from the battery, unless the mains voltage of the vehicle differs from 12
V. This minimizes the risk of disturbances from or to the radio module, as well as guarantees a loss-free power
distribution. The grounding cable is connected to the car chassis with a lead as short as possible (NOT directly from
the negative pole of the battery).
If the vehicle has a +24 V electrical system (trucks, all-terrain vehicles, etc), an external voltage converter must be
used. The converter must be well protected against transients produced by the vehicle's electrical system. It must
also be capable of maintaining a stable output during the rapid changes in the load current. Some vehicles have a
main switch (for instance the gas trucks) that separates the chassis of the vehicle from the negative lead of the
battery. Never pass this switch, that is, the grounding of the reducer must be taken from the body of the vehicle,
NOT directly from the battery.
Lightning protection
Protect the antennas in particular from lightning using lightning rods, surge arrestors, gas discharge tubes and/or
other methods. As the installation and climatic conditions vary, the customer is always responsible for the lightning
protection of the final installation.
 Grounding
The TDM880i has been designed for negative ground systems. If you install the TDM880i in a system with positive
ground, take a special care to ensure that the grounding and supply voltages are correctly connected. All the input
and output signal voltages in this document are always referred to the GND pins of the connector X104 (pins 6,7 and
8).
 Starting up
Starting up after flash / parametrization
1. Remove the parametrization/flash cable.
2. Power down the device.
3. If you have to check the GPS and/or network functionality, connect the antennas.
Optional
4. Power up the device.
5. Make sure that the red Power On LED is lit. This tells you that the device is powered on and the root software is
running.
Verifying the AT functionality
1. Power down the device.
2. Connect the DLR-3T cable to a COM port of a PC, and connect the DLR-3T with the CA-125 and radio module.
3. Power up the device.
4. Open a serial connection to the device using an appropriate terminal program, for example the HyperTerminal.
Communication settings:
• 9600 baud
• 8 data bits
• N (no parity)
•1stop
• none (handshake)
5. Execute the AT info command. Check that the device replies with OK as in the following sequence:
> AT
OK.

INSTALLATION
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Verifying the parametrization functionality
1. Power down the device.
2. Connect the DAU-9S cable to a COM port of a PC, and then connect the DAU-9S with the CA-125 and radio
module.
3. Start the TETRA Terminal Programming Tool (the version 2009.20.53.4 or later of TPT should be used).
4. Power up the device.
5. From the
Connections: drop down menu, select the connection type as FBUS . In case of TPT errors, see TPT
manual.
6. Select
File  Scan Product . The TPT should recognize the TDM880i as RC-18, and allow the parametrization
of the device.

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FEATURE GUIDE
5. FEATURE GUIDE
 Feature overview
Based on the Airbus Defence and Space TETRA i-range platform, the TDM880i contains a lot of functionality
common to this product family. This document focuses on the new features and major feature changes introduced
in the TDM880i product. Thus the common TETRA features are not described in depth here.
The main new features of the TDM880i are:
• Tracking capability of the location history (see Section Tracking and positioning on page 17)
• Configurable low power consumption mode with time and periodical capabilities - the sleep mode (see Section
Sleep mode on page 17)
• Controlled periodic reset powers the device off and re-starts it within a configurable period (see Section Periodic
reset on page 18)
• Possibility to route GPS output as NMEA through the AT port (see Section NMEA output on page 18)
• Enhanced clock recovery after power failure (see Sections Time recovery on page 19 and Recovery from power
failure on page 19)
• Enhanced temperature protection by controlling the RF and extension chip powering in heating conditions (see
Section Temperature protection on page 19)
• Configurable group management with background scanning and the ability to use FACCH for messaging when
available (see Section Load management (group management + FACCH) on page 20)
• I/O line bound Alert condition management feature with configurable OTA notification and configuration options
(see Section Alert condition and notification feature on page 20)
• Ignition signal recognition and powering the radio ON/OFF accordingly (see Section Ignition sense (IGS )
functionality on page 21).
 Tracking and positioning
The TDM880i can be configured to send its location information periodically to the controller that needs to keep
track of the location history. When the TDM880i is in service, the location information is sent as SDS messages.
When the TDM880i is out of service and the GPS tracking functionality is enabled, the TDM880i stores the location
information in permanent memory until it is back in service again. The tracking information is then sent to the
controller as SDS messages.
The SW component that provides the tracking functionality in the TDM880i is called the GPS Tracking Server
(GTS).
 Sleep mode
The sleep mode functionality adds a special timed hibernation possibility for the product. In general this means that
the product can be set to low-power consumption mode - for example sleep - for a specified amount of time. In this
mode, the device is aware of its internal clock and powering events, but has turned down all other external PEI / RF
interfaces.
When using this feature, the device can be configured to hibernate for a certain time or the time periods can be
defined when the device is operational and when it hibernates
It should be noted that the sleep mode itself does not include calendar functionality, and the given time parameters
are treated as absolute values of specified time units like minutes.
Note: Due to the background nature of this feature, it should be noted that when this feature is configured
and activated, it takes partial control over the GPS circuit powering and in certain situations prevents the
powering down the GPS circuit. In cases where the power consumption should be turned to an absolute
minimum, or complete control of the GPS circuit is required, this feature should be turned off.

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Sleep mode activation
Sleep mode can be activated by passing a configuration message to the device which defines sleep and optional
wake time. See PARAMETER REFERENCE (TDM880I SPECIFIC PARAMETERS) on page 22 for Sleep mode
parameter information.
Sleep mode termination
Sleep mode is terminated - either temporarily or permanently - if at least one of the following conditions occur:
Termination time reached
The Sleep mode service periodically checks the current time and date to resolve the possible wake-up condition.
When the specified time is reached, the device is started up into operative mode.
Power switched ON by the end user
Powering the TDM880i can be controlled by bringing high any of the IGS input signals. If the device is powered on
when the Sleep mode is configured, the device will boot up into operative mode and remain in that state for a fixed
time of 10 minutes. If the Sleep Mode configuration is not updated during this period, the Sleep Mode continues
execution as previously configured.
Power failure
When the main power is returned after a power loss, the device will boot up and check the time settings of the
device. If the power loss caused a reset to the Real Time Clock (RTC), the device is powered to a fully operative
mode, and the RTC recovery routine is started. During this mode, the all Sleep mode settings are temporarily
cancelled until the correct time/date are recovered. After the successful retrieval of the correct time, the Sleep mode
functionality continues execution as configured.
 Periodic reset
Data terminals can be installed in remote locations or in locations that are hard to access by maintenance
personnel. TDM880i has a built-in mechanism to recover from possible erroneous conditions within a reasonable
period of time. Controlled periodic reset powers the device off and re-starts it within a configurable period in a
managed way.
Countdown timer for the next periodic reset can be read with the following AT-command.
AT+CXWDCT
 NMEA output
The TDM880i provides two ways of routing the NMEA output from the GPS module directly to the AT interface. Both
require an AT command for initiation. To enable the GPS, use the following AT command (if the GPS is not enabled
by default using the parameter settings of the TDM880i):
AT+CXGPSC=value
value 1 activates and 0 disables the GPS.
Periodic Output:
The end user may request the device to enter a state where NMEA is queried periodically from the GPS facilities
and routed to the AT channel at a speed of 9600 b/sec. To enable this mode, the end user must use the following
command.
AT+CXGPSPLR=value
values 1-30 equals time in seconds, the value 0 disables periodic output
Direct Timed Output:
In this mode the device routes the 4800 b/sec. NMEA output directly to the AT output for a specified period of time.
In order to turn this mode on, the following AT command must be used.
AT+CXNMEARD=password, value
Note: Sleep mode cannot be terminated through the AT/OTA interface when the device is in the hibernate
mode. Such termination always requires interfacing the power switching functionality or the main power
itself.

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FEATURE GUIDE
password parametrized, the time value can be anything between 1-160, the value 0 sends NMEA to TE until power
off.
 Time recovery
If the radio has been out of main power and has consumed all the power stored in the backup batteries, the in-
device main clock resets. At the next startup the condition is recognised and the TDM880i starts to recover the clock
state. During the recovery process, the following steps are taken:
1. The device tries to connect into the network and receives the current network time.
2. If the network does not provide the main time within 10 minutes, the network recovery is continued and the device
tries to recover the time from the GPS signal.
 Recovery from power failure
The TDM880i is powered by an external DC supply (10.6 - 16 V).
Starting up the TDM880i after an external power supply failure requires that at least one of the three IGS signals is
held in the logic high state. If all the IGS signals are kept in the logic low state after a power supply failure, the device
does not start up.
When an external DC supply is applied, or if you want to start up the TDM880i automatically after a power failure,
you should permanently connect the IGS signal in the connector X104 (pin #5) to the power supply pins #1, #2 and
#3 of the same connector (that is to the main DC supply pins/wires). In that case, you must shut down the device by
disconnecting the external power supply.
If the device has lost main power and runs out of backup power, the main clock of the device resets. In this case the
Time Recovery sequence is started during the next startup. See Section
Time recovery on page 19 .
When the device has no power, the I/O lines are in an undefined state. Use external pull-up and pull-down resistors
in the I/O lines if the I/O should have a defined state in power off. Note also that the Power On indicator, In Service,
and Over-temperature indication signals are driven high but are in high-Z when not driven. These signals should not
have an external pull-up resistor in order to get a valid result (there is a weak pull-down in each signal line). An
external pull-down resistor is recommended to be used in these signals. After recovering from a power failure, the I/
O lines are driven to the state they were in before the power failure. The only pins that do not behave this way are
the GPS fix and In Service indication pins. These I/O pins indicate the real status of the GPS or TETRA service
availability.
 Temperature protection
The device monitors its internal temperature and shuts down the transmitter in the event of overheating. An
overheating indication will be sent over an AT command interface (and indicated by I/O line).
After a sufficient drop in internal temperature, the device returns the transmitter to normal operation, and indicates
this event to an external application by the I/O line and by AT indication.
Note: During the period of direct routing, the AT channel is not available.
Note: After the NMEA redirect period ends, the GPS is disabled.
Note: At any time during the recovery, the end user is able to set the time using the AT interface, but if the
network recovery is activated, it supersedes other recovery functions.
Note: The TDM880i utilizes UTC time (Coordinated Universal Time).

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 Load management (group management + FACCH)
While the TDM880i cannot establish outbound individual calls or accept them, it is able to register and scan group
traffic. Group management in the TDM880i is done exactly the same way as in the THR880i (TETRA handportable
radio) product. During the group connectivity, the TDM880i can utilize FAC channel (FACCH) in SDS sending when
there is no other traffic.
 Alert condition and notification feature
The TDM880i can be configured to monitor I/O line changes and to react to them by setting an alert condition into
the system. Depending on the configuration, the action taken may be a single shot SDS message to a defined
address, continuous sending until the alert condition is removed, or an SDS notification requiring acknowledgement
before turning off the alert condition.
In addition to immediate and Alert dedicated SDS sending, the TDM880i can be configured to include alert status
information into LIP messaging.
 AT commands
AT commands can be used to manage and control the functionality of the TDM880i.
For a complete list of the AT commands, refer to the latest version of Airbus Defence and Space TETRA AT
command list.
 I/O lines functionality
The TDM880i includes one 12-pin connector (AT or CPU) and two 15-pin board-to-wire connectors in which certain
pins can be used as indications of the device state or as directly configurable I/O between the device and a remote
unit. In X103 and X102 connectors, the levels of input and output signals are 5 V TTL excluding the FBUS and
MBUS signal. See Section CONNECTOR INTERFACES on page 31. In the CPU-connector the inputs and outputs
are 2.8 V.
Power On output , X103, X901:
The Power On signal indicates the power status of the device. It will be held inactive until the device has booted up
properly and is ready to operate (for example, ready to receive a command via the AT interface).
1
In Service output , X103, X901:
The line indicates the status of the radio signal reception. When the terminal has successfully registered in the
system, and the signal it is receiving is good enough for communications, this line is active.
1
GPS Fix output , X103, X901
This line is active when the GPS receiver is enabled and the satellite fix for positioning is good enough.
1
Over Temp output , X103, X901:
The output is active when the device is unable to communicate due to overheating. The output will go inactive when
the temperature is back within specified limits.
1
IGS input , X103, X901:
The TDM880i can be toggled on/off by an external application. To toggle the power on, set the IGS to logic high level
(see Table 2), and to power off, set it to 0 V.
DC output , X102, X103:
5 V output voltage is provided through the connectors X102 and X103, the maximum load current is 100 mA.
Note: AT passwords cannot contain quotation marks ("... ").
Note: The data connection must be disconnected before removing the data cable.
If the data cable is removed before the data connection is disconnected, the connection will stay reserved
and new connection attempts will fail.
1. Note that this signal is not driven actively to the low state when the device is powered on. The device has a weak pull-down on board. Use an external
pull-down resistor in a harsh environment. This applies to X103.