Comar Systems T200B-S User manual

USER MANUAL T200B-S
CLASS B AIS TRANSPONDER WITH ANTENNA SPLITTER
SKU 001-1019
T200B-S-MA-v06r01
2018-10-18
ENGLISH

T200B-S
3
CONTENTS
1 T200B-S CLASS ‘B’ AIS TRANSPONDER WITH ANTENNA SPLITTER ....5
2 DOCUMENT ...............................................................................................6
2.1 About This Manual ..............................................................................................6
3 NOTICE ......................................................................................................7
3.1 Copyright ............................................................................................................7
4 GENERAL NOTICES...................................................................................8
5 INTRODUCTION.........................................................................................9
5.1 Parts List .............................................................................................................9
6 BACKGROUND TO AIS............................................................................10
6.1 AIS Classes.......................................................................................................10
6.2 Information Transmitted and Received.............................................................10
7 INSTALLATION .........................................................................................11
7.1 Installation Warnings.........................................................................................11
7.2 Mounting ...........................................................................................................11
7.3 Power Connection ............................................................................................11
8 DIMENSIONS ...........................................................................................12
8.1 GPS Antenna ....................................................................................................13
8.2 VHF Antenna.....................................................................................................13
9 PROGRAMMING THE TRANSPONDER...................................................14
9.1 Installing the ProAIS-2 application....................................................................14
9.2 Connecting to your T200B-S ............................................................................14
9.3 The ProAIS-2 Application - Functions...............................................................14
9.4 Configuring your T200B-S ................................................................................15
9.4.1 Important information for US Customers:............................................15
9.5 Optional User Configuration .............................................................................15
9.5.1 NMEA Baud Rate Configuration ..........................................................16
9.5.2 GPS Data Output .................................................................................16
9.5.3 GPS Status Page .................................................................................16
9.5.4 Other Vessels Page..............................................................................16
9.6 Optional Engineer Configuration ......................................................................16
9.6.1 Diagnostics Page.................................................................................16
9.6.2 Serial Data Page ..................................................................................17
9.6.3 Menu Bar..............................................................................................17
9.7 Disconnect the USB cable and Restart ............................................................17

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10 FRONT PANEL DISPLAY .........................................................................18
11 OPERATION............................................................................................. 18
11.1 Switching On.....................................................................................................18
11.2 Warning and Fault States .................................................................................18
11.3 Data Port Messages .........................................................................................19
11.4 AIS Transmit OFF..............................................................................................19
11.5 Data Rates ........................................................................................................19
11.6 Built in Test .......................................................................................................19
11.7 LED Indicators ..................................................................................................20
12 REAR CONNECTIONS.............................................................................21
13 DATA CONNECTION ...............................................................................22
13.1 Connection to a computer................................................................................22
13.2 NMEA 0183 Connection ...................................................................................22
13.2.1 Pin Identifications (by function)............................................................22
13.2.2 Connection to a NMEA 0183 Plotter or Radar .....................................23
13.3 NMEA 2000 Connection ...................................................................................23
13.4 Connection Summary .......................................................................................24
14 MAINTENANCE........................................................................................ 24
15 SPECIFICATION....................................................................................... 25
15.1 Physical.............................................................................................................25
15.2 Electrical ...........................................................................................................25
15.3 Operational .......................................................................................................25
15.4 Environmental ...................................................................................................26
15.5 Approvals..........................................................................................................26
16 VHF SHIP LICENCE ................................................................................. 27
17 DECLARATION OF CONFORMITY..........................................................27
18 FCC NOTICE............................................................................................ 27
19 GENERAL WARNINGS ............................................................................28
19.1 VHF Antenna Connection .................................................................................28
19.2 Radio Frequency Exposure ..............................................................................28
20 LIMITED WARRANTY ............................................................................... 29
21 DISCLAIMER ............................................................................................30

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1 T200B-S CLASS ‘B’ AIS TRANSPONDER
WITH ANTENNA SPLITTER

T200B-S
6
2 DOCUMENT
2.1 About This Manual
This manual provides installation, operating instructions and fault-finding procedures for the
equipment to which it relates.
After installation, this manual should remain with the vessel to which it relates.
This manual may also be made available in electronic Portable Document Format (PDF). In PDF
format, the following categories are all enabled as active hyperlink references: (1) The titles of each
section; (2) document cross-references; (3) the table of contents.
This document may therefore be navigated quickly and effectively by using a mouse or other pointing
device to activate each of these hyperlinks. This is a printer friendly document, designed to be
printed 2-sided as a booklet with A5 pages on A4 stock paper.
Document name:
Date:
Details:
Author:
CSB200-S-MA-v01r01
2017-07-31
First draft
MD, PC, AA
CSB200-S-MA-v02r01
2017-08-17
First revision - draft
JLS, MW, AA
CSB200-S-MA-v02r02
2017-08-22
First Release (antenna port specifications added)
JLS
CSB200-S-MA-v02r03
2017-08-31
Sections 9.7 & 13.4 Disconnect the USB cable
JLS
CSB200-S-MA-v02r04
2017-09-06
Section 5.1
MW
CSB200-S-MA-v05r01
2018-01-31
Updated format
JS
T200B-S-MA-v06r01
2018-10-18
Product Name Change & Formatting
TSI

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3 NOTICE
3.1 Copyright
The copyright and all rights of a like nature in respect of this publication in any part of the world are
the property of COMAR SYSTEMS LTD. (COMAR).
No part of this document may be reproduced or transmitted in any form or by any means, whether
electronic, mechanical, photocopying, recording or otherwise, nor stored in any information retrieval
system of any kind, nor used for tendering or manufacturing, nor communicated to any other person
without the written permission of COMAR.
The recipient of this document, as its registered holder, must exercise due diligence in ensuring that
the above conditions are observed (Errors and Omissions Excepted).
Any enquires relating to this document or its contents should be addressed, in writing, in the first
instance to COMAR SYSTEMS LTD.
COMAR SYSTEMS
Vittlefields Technology Centre
Forest Road
NEWPORT
Isle of Wight
PO30 4LY
UNITED KINGDOM
tel: [phone]
email: [e-mail]
web: www.comarsystems.com
COMAR SYSTEMS reserves the right to make changes to its products and specifications without notice

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4 GENERAL NOTICES
Please read the General Notices:
SAFETY: Make sure the power supply is switched off before you make any electrical
connections to the unit.
INSTALLATION: This equipment must be installed in accordance with the instructions
provided in this manual. Failure to do so could result in poor performance, personal injury
and/or damage to your vessel and/or connected equipment.
CABLES: The supplied cables should only be cut, shortened or lengthened by an
appropriate supplier.
COMPASS: The compass safe distance of this unit is 0.5 m or greater for 0.3° deviation.
In accordance with a policy of continual development and product improvement, hardware and
software may be upgraded from time to time, and future versions of equipment may therefore not
correspond exactly with this manual.
When necessary, upgrades to the product will be accompanied by updates or addenda to this
manual. Information contained in this manual is liable to change without notice.
COMAR SYSTEMS LTD. disclaims any liability for consequences arising from omissions or
inaccuracies in this manual and any other documentation provided with this product.
~
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5 INTRODUCTION
The T200B-S is a compact and rugged AIS Transponder with built-in Antenna Splitter, designed for
the demands of the small commercial boat, fishing boat and leisure markets. It meets the Class ‘B’
standard that allows vessels that are not required to fit Class ‘A’ units to voluntarily fit an AIS
Transponder. When connected to an external VHF antenna and a GPS antenna (not supplied), the
T200B-S will transmit its own vessel position and data and also receive information from other AIS
vessels, shore stations and navigational aids within VHF range.
The T200B-S has a built-in Antenna Splitter which allows the unit to share a single VHF antenna with
a VHF radiotelephone. This eliminates the need to install a second VHF antenna on the vessel and
reduces installation time and cost. Additionally, the unit has an FM radio output on the rear which
allows monitoring of public service FM radio broadcasts.
The unit is initially programmed by the user with the supplied software. The vessel’s MMSI number,
name, call sign, dimensions and type of vessel are entered at this stage. Once programmed, the
unit will automatically receive and transmit AIS data. The T200B-S is compatible with a range of
computer-based navigation programs and chart plotters that are capable of accepting AIS data
sentences over a NMEA 0183 or NMEA 2000 connection.
This manual describes the installation and operation of the T200B-S.
● It is recommended that your Transponder is installed by a professional installer
● Before operating the unit you should familiarise yourself with this user manual
5.1 Parts List
On delivery, carefully inspect the contents of the packing case. Note any damage or any missing
items. Ensure that the correct parts are included for your application.
*Note: RF Connectors:
Connector PL259 (male plug) will mate with connector SO239 (female socket)
Item:
Description:
No.
included:
COMAR
SKU Number:
1
T200B-S AIS Transponder/Splitter, with mounting bracket
1
001-1019
2
T200B-S Installation CD
1
004-7043
3
T200B-S Manual
1
003-1019
4
Data cable: 9-pin D-sub male connector to bare tails, 2 m
1
002-1003
5
USB cable: USB 2.0 Type A to Type B connectors
1
002-1006
6
VHF RF Patch lead: PL259-PL259 male connectors, 1 m*
1
004-7564
7
Phono Plug
1
004-7112

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6 BACKGROUND TO AIS
The marine Automatic Identification System (AIS) is a location and vessel information reporting
system. It allows vessels equipped with AIS to automatically and dynamically share and regularly
update their position, speed, course and other information such as vessel identity with similarly
equipped craft. Position is derived from a Global Navigation Satellite System (GNSS
1
) network and
communication between vessels is by Very High Frequency (VHF) digital transmissions.
A sophisticated and automatic method of time sharing the radio channel is used to ensure that even
where a large number of vessels are in one location, blocking of individual transmissions is
minimised, any degradation of the expected position reporting interval is indicated to the user, and
even if the unit suffers extreme channel overload conditions it will always recover to normal operation.
6.1 AIS Classes
There are two classes of AIS unit fitted to vessels, Class ‘A’ and Class ‘B’. In addition AIS base
stations may be employed by the coastguard, port authorities and other authorised bodies. AIS units
acting as aids to navigation (AtoNs) can also be fitted to fixed and floating navigation markers such
as channel markers and buoys.
Class ‘A’ units are a mandatory fit under the safety of life at sea (SOLAS) convention to vessels
above 300 gross registered tons or which carry more than 11 passengers in International waters.
Many other commercial vessels and some leisure craft also fit Class ‘A’ units.
Class ‘B’ units are currently not a mandatory fit, but authorities in several parts of the world are
considering this. Class ‘B’ units are designed for fitting in vessels which do not fall into the mandatory
Class ‘A’ fit category.
● The T200B-S is a Class ‘B’ unit.
6.2 Information Transmitted and Received
An AIS Class ‘B’ unit will transmit:
● MMSI
● Call Sign and Name
● Length and Beam
● Ship Type
● Time
● Course Over Ground (COG)
● Speed Over Ground (SOG)
● Heading
1
GPS is the American GNSS network. There are others, notably GLONASS (Globalnaya
Navigazionnaya Sputnikovaya Sistema) which is the Russian system and BDS (BeiDoü) which is the
Chinese system

T200B-S
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In operation, an AIS unit uses one of two VHF channels within the international marine band
allocation (channel 87B, 161.975 MHz, or channel 88B, 162.025 MHz) to regularly transmit
information such as the vessel position, Maritime Mobile Service Identity (MMSI), Name, Speed,
Course, etc.
In operation, an AIS unit also receives similar information from other AIS equipped vessels within
VHF range and outputs that information for use by an external display medium (AIS enabled chart
plotter, computer using AIS enabled chart plotter software etc.)
7 INSTALLATION
7.1 Installation Warnings
WARNING: Do not connect the T200B-S unit to a mains (line) AC electrical supply. An electric
shock or fire hazard could result.
CAUTION: Do not connect the T200B-S unit to a dc supply exceeding 15.6V or reverse the
supply polarity. This may damage the unit.
CAUTION: The T200B-S unit is designed for operation in the temperature range -25°C to
+55°C. Do not install (or use) the T200B-S unit in environments which exceed this range.
CAUTION: The T200B-S unit should be installed in a location where it is protected from water
and spray.
7.2 Mounting
The T200B-S can be mounted to a suitable bulkhead or shelf.
● Select a location away from excessive heat sources
● Avoid high levels of vibration and shock
7.3 Power Connection
Connect a 12 V dc supply (9.6 - 15.6 V) capable of supplying 2 A peak to the dc power cable.
● Positive (+) = RED
● Negative (-) = BLUE
NOTE: The case of the unit is not isolated from the negative terminal of the supply; therefore it is not
recommended that the unit is attached to metal parts of the vessel.

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8 DIMENSIONS

T200B-S
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8.1 GPS Antenna
The GPS antenna used for a Class ‘B’ AIS device must be a dedicated antenna, i.e. not shared with
any other GPS receiver.
Any NMEA GPS positional sentences transmitted as data from other equipment and connected to
the NMEA ports of the T200B-S will not be used for AIS transmission.
The GPS antenna to be used must be of the active type, i.e. it should incorporate a low noise
amplifier (LNA) and be suitable for marine shipboard applications (index of protection, ruggedness,
means of mounting etc.) A GPS antenna should be selected so that there is a minimum total gain of
25 dB available at the antenna connector on the rear of the T200B-S.
Installation of the GPS antenna is critical for the performance of the built in GPS receiver which is
used for timing of the transmitted time slots and for the supply of navigational information should
the main navigational GPS fail.
We strongly recommend that:
● The GPS antenna is mounted in an elevated position and free of shadow effect from the
ship’s superstructure.
● The GPS antenna has a free view through 360 degrees with a vertical angle of 5 to 90 degrees
above the horizon.
● As the received GPS signal is very sensitive to noise and interference generated by other
onboard transmitters, ensure that the GPS antenna is placed as far away as possible from
RADAR, Inmarsat® and Iridium® transmitters and ensure the GPS antenna is free from direct
view of the RADAR and the Inmarsat beam.
● It is important that the MF/HF and other VHF transmitter antennas are kept as far away as
possible from the GNSS antenna. It is good practice never to install a GPS antenna within a
radius of 5 metres from these antennas.
8.2 VHF Antenna
The T200B-S with built-in Antenna Splitter can share a single VHF antenna with a VHF
radiotelephone. The VHF antenna should meet the following requirements:
● It must be suitable for marine shipboard applications (index of protection, ruggedness,
means of mounting, etc.)
● It should be omni-directional and vertically polarised with unity gain (0 dB) with a bandwidth
sufficient to maintain VSWR <1.5 over the frequency range 156 -163 MHz. As a minimum
the 3 dB bandwidth must cover the two AIS channels and the DSC Channel.
● It should be mounted with at least a two metre vertical separation distance from any other
VHF antenna used for speech or DCS communication.

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9 PROGRAMMING THE TRANSPONDER
The ProAIS-2 application (supplied) allows you to configure and monitor the performance of your
T200B-S. ProAIS-2 is compatible with both Microsoft® Windows® and Intel based Apple®
Macintosh® OS X operating systems. The system requirements are as follows:
● Microsoft® Windows® XP, Windows Vista, Windows 7, Windows 10 (32 and 64 bit)
● Apple® Macintosh® OS X 10.5 / 10.6 (Intel™ based systems only)
9.1 Installing the ProAIS-2 application
The application is installed from the CD provided with your T200B-S transponder. Insert the CD into
your computer and navigate to the Windows or OS X folder.
● Windows: Double click the setup.exe item to start the installation and follow the on-screen
instructions.
● OS X: Double click the ProAIS-2.dmg item to start the installation and follow the on-screen
instructions.
9.2 Connecting to your T200B-S
● Before launching the ProAIS-2 application, first connect your T200B-S to your computer
using the USB cable. After it is connected, you can launch ProAIS-2 from the Windows Start
menu or the OS X Applications folder.
● Select the serial port corresponding to your T200B-S from the drop down menu at the top
left of the ProAIS-2 window, and click the Connect button.
● ProAIS-2 is now communicating with your T200B-S and will display any pre-configured
vessel data in the Configuration page.
9.3 The ProAIS-2 Application - Functions
The ProAIS-2 application has a number of pages with specific functions. These functions control the
setup of your T200B-S.
● The Configuration page shows the current vessel information and T200B-S configuration.
Vessel information and configuration can also be edited and saved to the T200B-S.
● The GPS Status page shows the status and signal strength information for the AIS internal
GPS receiver.
● The Other Vessels page shows a list of AIS targets currently being received by the T200B-S.
● The Diagnostics page shows a range of information relating to operation of the T200B-S
which may be useful during installation.
● The Serial Data page shows real time data from the T200B-S in NMEA 0183 format and
provides functions to record this data.

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9.4 Configuring your T200B-S
Please follow these steps to configure your T200B-S AIS Transponder correctly:
1. Select the Configuration page to configure the AIS vessel data that will be transmitted by your
T200B-S.
2. Enter your vessel’s name (20 characters maximum), call sign (optional, 7 characters maximum)
and MMSI number. An MMSI number is required for the T200B-S to operate. The MMSI number
configured in your T200B-S should be the same as that configured in any other radio equipment
on board. If you do not have an MMSI number contact the relevant authority in your country for
more information.
CAUTION: Once programmed, the MMSI number cannot be changed by the end user. If
the MMSI number needs to be changed in any way, the unit must be returned to COMAR
SYSTEMS or one of our authorised dealers
3. Select the vessel type most appropriate to your vessel from the drop down list.
4. Enter the dimensions of your vessel and the location of the GPS antenna in the Ship’s
Dimensions and GPS Antenna Location box. The dimensions should be entered in metres and
rounded up to the nearest whole metre (1 foot is approximately 0.3 metres
2
).
5. Save the configuration to your T200B-S by clicking the Write Configuration button at the top right
of the configuration page. Please read the warning message and check the MMSI number is
correct before clicking the programme button.
6. Your T200B-S is now fully configured and ready for use.
9.4.1 Important information for US Customers:
CAUTION: There are specific laws in the United States of America (US) regarding the
configuration of AIS Class ‘B’ transponders. If you are a US resident and intend to use your
T200B-S in US waters, you should make sure that your retailer has configured your product
prior to supplying it to you. If your T200B-S has not been pre-configured please contact your
dealer for details of how to have it configured.
WARNING: It is a violation of the rules of the Federal Communications Commission (FCC) to
input an MMSI number that has not been properly assigned to the end user, or to otherwise
input any inaccurate data in this device.
9.5 Optional User Configuration
The Configuration page includes additional options for NMEA port Baud rates and GPS data output.
2
1 imperial foot = 0.3048 metres

T200B-S
16
9.5.1 NMEA Baud Rate Configuration
Typically the NMEA Output Port 1 is used for connecting to a chart plotter or other display and is
configured to operate at 38,400 Baud. This rate is required for AIS data transfer.
Your T200B-S provides a multiplex function between the NMEA Input Ports and the NMEA Output
Ports. Any data provided to the NMEA Input Ports will be multiplexed to the NMEA Output Ports
along with the AIS data. Typically the NMEA Input Port 2 is configured to operate at 4800 Baud for
connection to a Heading Sensor or other NMEA 0183 device.
The Configure Baud Rates box allows the Baud rates for the NMEA 0183 Ports to be adjusted
independently if required. After making changes to the Baud rate settings click the Write configuration
button to save these settings to your AIS transponder.
9.5.2 GPS Data Output
Your T200B-S incorporates an internal GPS receiver and can be configured to output GPS position
fix information via the NMEA 0183 port. Check the GPS data sentences required in the Output GPS
Sentences box. After making changes to the GPS output settings click the Write configuration button
to save these settings to your T200B-S.
9.5.3 GPS Status Page
The GPS status page shows the current GPS signal strength along with current GPS position fix
information. Satellite signals shown in green are actively being used to calculate a position. If a
position fix is not available then no position information will be displayed and the signal strength bars
will be shown in blue.
9.5.4 Other Vessels Page
The other vessels page provides a list of all AIS vessels from which AIS position reports are being
received. For each vessel the MMSI, Name, Call sign, AIS Class, Speed, Course, Latitude,
Longitude, Range and Bearing are shown along with the age (in seconds) of the position report. It
is possible to sort the displayed information by clicking on the column headings.
9.6 Optional Engineer Configuration
This information is provided for installation and diagnostic purposes only and should not be
relied upon for navigation.
9.6.1 Diagnostics Page
The diagnostics page provides a range of information about your T200B-S operation and status.
This information may be useful during installation or when attempting to diagnose a potential issue
with the operation of your T200B-S. If your T200B-S is operating normally all items in the checklist at
the top left of the page will show a green tick / check mark.

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17
9.6.2 Serial Data Page
The serial data page shows all data output from your T200B-S in NMEA 0183 format. It is also
possible to send NMEA 0183 commands to the T200B-S if required for technical support or custom
configuration. A facility to record the data to a file is provided by clicking the Log to File button.
9.6.3 Menu Bar
The application menu bar includes the following functions and features:
File Menu:
● Open log file - opens a previously recorded log file for review in ProAIS-2.
● Save log file - start recording data received from the connected T200B-S to file.
● Exit - exits the ProAIS-2 application.
Options Menu:
● Alert on AIS transmission - a brief sound is output from your computer on each successive
AIS transmission.
Help Menu:
● About - shows ProAIS-2 application version and copyright information.
9.7 Disconnect the USB cable and Restart
After configuring the transponder using the ProAIS2 software, it is important to remember to:
● Exit the ProAIS2 software
● Disconnect the USB cable from the unit
● Disconnect the main 12 V dc power supply
The unit is now ready for switching ON by reconnecting the main 12 V dc power supply and
commencing active service.

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10 FRONT PANEL DISPLAY
11 OPERATION
11.1 Switching On
When the 12 V dc supply is switched ON then the green ON LED will light and the other six LEDs
visible on the front panel of the unit will illuminate twice for a period of one second on each
illumination. The Status, Error, TX Offand TX LEDs will then go out.
The green RX LED will flash when it is receiving data from other AIS units.
When the internal GPS is locked the yellow LED will go out and the green Status Led will light; note
that this process may take up to 30 minutes depending on the switch-on state of the GPS receiver.
The red TX LED will flash momentarily every time the unit transmits.
11.2 Warning and Fault States
If the unit has not been able to transmit a position report during the last expected two reporting
intervals (i.e. the nominal reporting interval cannot be maintained for operational reasons such as a
Message 23 quiet period, high channel load conditions, etc.) the yellow LED will illuminate. This is a
warning condition only and indicates that your vessels position is not currently being reported to
other vessels. Reception of other vessels AIS information by the T200B-S is not affected. When the
unit is able to commence reporting the yellow LED will go out.
If a fault occurs then the red Error LED will illuminate. This may illuminate briefly if the power supply
is interrupted or if the VHF antenna characteristics are briefly affected.
If the red Error LED illuminates continuously then the unit should be assumed to be faulty and should
either be switched off (power removed) or if this is not practical, any other vessel position information
derived from the unit should not be used and it should also be assumed that the unit is not

T200B-S
19
transmitting valid position information for your vessel. The unit should be examined by an authorised
service agent at the earliest opportunity.
11.3 Data Port Messages
The data ports will output the following:
● (At power-up) boot-loader and main application splash text screens including version
numbers, and memory status
● Details of relevant AIS transmissions received
● Details of AIS transmissions sent
● Details of channel management messages received
● Alarm messages generated by the Built-In Integrity Testing (BIIT) function
The data ports will accept the following inputs:
● Programming information (USB)
● Alarm acknowledgements (NMEA)
11.4 AIS Transmit OFF
The Transmit OFF facility is provided in the event that you do not wish to disclose your position to
other users or to conserve power when it is not necessary to transmit your position.
The transmitter can be turned OFF by connecting a simple switch between the Blue core on pin 6
and the Green core on pin 5. Closing this switch will cause the Blue-TX off LED and the Yellow
Timeout LED to light, the Green Status LED will extinguish. Opening the switch will resume
transmissions. Reception of AIS data during this operation will not be affected.
11.5 Data Rates
The default Baud rate of the data link is 38.4 kBaud with 8 data bits, one stop bit and no parity. No
handshaking is used. The data interface conforms to IEC 61162-1.
11.6 Built in Test
The CSB200/S is equipped with Built-In Integrity Testing (BIIT). BIIT tests run continuously or at
appropriate intervals simultaneously with the standard functions of the equipment. The BIIT detects
any failure or malfunction that will significantly reduce integrity or stop operation of the T200B-S unit.
The tests include:
● AIS TX malfunction (synthesiser not locked and TX time-out not exceeded)
● Antenna VSWR exceeds limit
● Rx channel 1 malfunction (synthesiser not locked)
● Rx channel 2 malfunction (synthesiser not locked)

T200B-S
20
● Internal GNSS (GPS) not in use
● No valid SOG information
● No valid COG information
● Background noise > -77dBm
● GPS failure
● VSWR exceeding the maximum allowed level
● The input voltage is out of the specified range
11.7 LED Indicators
ON This is a green LED which indicates, when lit, that power has been connected correctly to the
transponder.
Status This is a green LED which indicates, when lit, that the transponder hardware has been
configured, the operating software is present, the CPU has booted up, the application software is
running and everything is correct.
RX This is a green LED which indicates when flashing that the T200B-S is receiving data from other
AIS transponders and is outputting this data as a VDM NMEA sentence on the output data ports. If
the Green LED is on continuously the unit has not been programmed with its personalised data, it
will still send received data to the output port but will not transmit.
TX This is a red LED which flashes momentarily when the T200B-S transmits its own AIS data.
Timeout This is a yellow LED which indicates when lit that the transmitter is prevented from
transmitting. Reasons for this include the following:
● The transponder’s internal GPS receiver is not operating or is not yet ready
● The transponder was unable to transmit an AIS message due to the channel being already
occupied, e.g. by transmissions from other AIS transponders, or the TX Off function is in
operation
Error This is a red LED which indicates when lit, one of the following status conditions is possible:
● Transmitter lockout timer (1 second maximum) has operated
● GPS is unable to gain lock after 30 minutes
● VHF antenna VSWR is out of range
● Power Supply is out of range
● Background noise level is above the threshold level (-77dBm)
TX Off This is a blue LED which indicates that the remote TX Off switch has been operated to manually
stop the T200B-S transmitting data.