Lars Thrane iridium LT-3100S Guide

User & Installation Manual
LT-3100S GMDSS Satellite Communications System
Document Number: 95-101817 Rev. 1.02
Release date: January 8, 2020
Copyright © Lars Thrane A/S
Denmark
ALL RIGHTS RESERVED

LT-3100S GMDSS User & Installation Manual Rev. 1.02
Lars Thrane A/S www.thrane.eu i
This Document is of © copyright to Lars Thrane A/S. It contains proprietary information, which is
disclosed for information purposes only. The contents of this document shall not in whole or in part be
used for any other purpose without prior permission from Lars Thrane A/S.
Disclaimer
Any responsibility or liability for loss or damage in connection with the use of this product and the
accompanying documentation is disclaimed by Lars Thrane A/S. The information in this manual is provided
for information purposes only, is subject to change without notice, and may contain errors or inaccuracies.
Manuals issued by Lars Thrane A/S are periodically revised and updated. Anyone relying on this information
should acquire the most current version e.g. from Lars Thrane A/S. Lars Thrane A/S is not responsible for
the content or accuracy of any translations or reproductions, in whole or in part, of this manual from any
other source.
Copyright
© 2019 Lars Thrane A/S. All rights reserved.
Disposal
Old electrical and electronic equipment marked with this symbol can contain substances hazardous to
human beings and the environment. Never dispose these items together with unsorted municipal waste
(household waste). In order to protect the environment and ensure the correct recycling of old equipment
as well as the re-utilization of individual components, use either public collection or private collection by
the local distributor of old electrical and electronic equipment marked with this symbol. Contact the local
distributor or dealer for information about what type of return system to use.
IMO and SOLAS
The equipment described in this manual is intended for use on commercial marine and leisure vessels. The
equipment is covered by the International Maritime Organization (IMO) and Safety of Life at Sea (SOLAS)
regulations.

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WARNING - Product installation
To ensure correct performance of this equipment,
it is strongly recommended that professionals with
expertise, properly trained, and likewise authorized
within the industry is completing the installation.
WARNING –DC circuit breaker
DC circuit breaker must be used as ON/OFF switch
on the Control Unit and Interface Unit.
WARNING –Overcurrent protective
Overcurrent protective devices used as safeguard
(specific to IEC 62368-1) - Lars Thrane A/S has the
responsibility of use of non-IEC approved fuses in
the equipment.
Safety Instructions for the Installer
The following safety instructions must be observed during all phases of operation, installation, service and
repair of this equipment. Failure to comply with these precautions or with specific warnings elsewhere in
this manual violates safety standards of design, manufacture and intended use of the equipment.
Lars Thrane A/S assumes no liability for the customer's failure to comply with these requirements.
Instructions for the Installer
WARNING –Turn off power switch
Turn off the main power switch before installing
the equipment described in this manual. Do not
connect or disconnect equipment when the main
power switch is on.
WARNING –Input Power
The input voltage range is: 12-24 VDC.
WARNING –Power supply protection
Make sure that the power supply is adequately
protected by a fuse or an automatic circuit breaker
when installing the equipment:
LT-3110S Control Unit (max. 15.0 A)
LT-3140S Interface Unit (max. 5.0 A)
WARNING - Explosive atmosphere
Do not operate the equipment in the presence of
flammable gases or fumes. Operation of any
electrical equipment in such an environment
constitutes a definite hazard.
WARNING - Compass safe distance
The compass safe distance for standard and
steering compasses is 0.85 m (2.8 ft) and 0.65 m
(2.1 ft) respectively. Observe these distances to
prevent interference to a magnetic compass.
If the safety precautions and warnings on this site are not followed, warranty will be void.

LT-3100S GMDSS User & Installation Manual Rev. 1.02
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Safety Instructions for the Operator
The following safety instructions must be observed during all phases of operation, installation, service and
repair of this equipment. Failure to comply with these precautions or with specific warnings elsewhere in
this manual violates safety standards of design, manufacture and intended use of the equipment.
Lars Thrane A/S assumes no liability for the customer's failure to comply with these requirements.
Instructions for the Operator
WARNING –Do not disassemble
Do not disassemble or modify this equipment. Fire,
electrical shock, or serious injury can result.
WARNING –Keep away from live circuits
Operational personnel must not remove product
enclosure. Do not service the equipment with the
communication cable connected. Always
disconnect and discharge unit, cable and circuits
before touching them.
WARNING - Permanent watch
In case of smoke or water leaks into the
equipment, immediately turn off the power.
Continued use of the equipment can cause fire or
electrical shock. Keep access and permanent watch
of the equipment in order to prevent any
unwanted escalation.
WARNING –DC mains connector
The DC mains connector is to be used as the
disconnection device to isolate the equipment
from the mains supply.
IMPORTANT - Safety distance
The safety distance from the LT-3130 Antenna
Unit, when the LT-3130 Antenna Unit is powered
and transmitting, is 0.1 m (0.3 ft), in order to
comply with the regional regulations.
Always keep this safety distance to the LT-3130
Antenna Unit to avoid any serious injury.
If the safety precautions and warnings on this site are not followed, warranty will be void.

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Required information for the reader
Throughout this document, essential information will be presented to the reader. The following text
(emphasized) has the following meaning and/or implication:
WARNING: A ‘Warning’ is an Operation or Service procedure that, if not avoided, may cause a hazard
situation, which could result in personnel death or serious injury.
IMPORTANT: Text marked ‘Important’ provides essential information to the reader, and is key information
to the user in order for the equipment to work properly. Damage to the equipment can
occur if instructions are not followed.
NOTE: A ‘Note’ provides essential information to the reader.
IMPORTANT –FCC Compliance Note:
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the interference
by one of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and the receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
This product does not contain any user-serviceable parts.
Repairs should only be made by an authorized Lars Thrane A/S service center. Unauthorized repairs or
modifications could result in permanent damage to the equipment and void your warranty and your
authority to operate this device under Part 15 regulations.
IMPORTANT –Innovation, Science and Economic Development Canada Compliance Note:
This device complies with Innovation, Science and Economic Development Canada license-exempt RSS
standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference,
and (2) this device must accept any interference, including interference that may cause undesired operation
of the device.
IMPORTANT –FCC Compliance Note:
This device complies with the GMDSS provisions of part 80 of the FCC rules.

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About this manual
Intended readers
This is a User & Installation Manual for LT-3100S GMDSS Satellite Communications System, or LT-3100S
GMDSS System. The manual is primarily intended for installers and service personnel.
Personnel installing or servicing the system should be professionals with technical expertise, properly
trained, and likewise authorized.
All safety instructions and guidelines in this manual must be observed. The safety instructions are listed in
the beginning of the manual. The guidelines are to be found in the separate chapters, where it is needed.

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Software versions
This manual is applicable to the following software:
Software Versions
Description
Version
LT-3100S GMDSS System
1.01
Table 1: Software Versions

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Record of Revisions
Rev.
Description
Release Date
Initials
1.00
Original document.
November 4, 2019
PT
1.01
GMDSS user functions
November 19, 2019
KK, PT
1.02
Added FCC compliance notes, Part 80 (page iv)
January 8, 2020
PT

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Table of Contents
Introduction ...................................................................................................................................................... 1
Unpacking (in-the-box)..................................................................................................................................... 2
Inspection...................................................................................................................................................... 2
Accessories........................................................................................................................................................ 3
GMDSS parts ................................................................................................................................................. 3
SSAS parts...................................................................................................................................................... 3
Mounts .......................................................................................................................................................... 3
Cable and connectors ................................................................................................................................... 3
System Overview .............................................................................................................................................. 4
Installation and Mounting................................................................................................................................ 6
LT-3110S Control Unit................................................................................................................................... 6
LT-3120 Handset ........................................................................................................................................... 9
LT-3121 Cradle............................................................................................................................................. 10
LT-3130 Antenna Unit................................................................................................................................. 11
LT-3140S Interface Unit .............................................................................................................................. 15
LT-3150S Alarm Panel................................................................................................................................. 16
LT-3160S Printer Adapter ........................................................................................................................... 18
Bracket Mount, Antenna Unit.................................................................................................................... 19
Pole Mount, Antenna Unit ......................................................................................................................... 21
Interfaces......................................................................................................................................................... 23
LT-3110S Control Unit................................................................................................................................. 23
LT-3130 Antenna Unit................................................................................................................................. 26
LT-3140S Interface Unit .............................................................................................................................. 28
User Interface (UI)........................................................................................................................................... 30
Display......................................................................................................................................................... 31
Menu system............................................................................................................................................... 34
System status.............................................................................................................................................. 36
Using the system............................................................................................................................................. 38
Distress Alert............................................................................................................................................... 38
Maritime Safety Information (MSI)............................................................................................................ 39
Priority voice call......................................................................................................................................... 39
Priority messaging ...................................................................................................................................... 39
Non-priority voice call ................................................................................................................................ 40