USERS MANUAL
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Tron SART20
84145_UM_SART20_G
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EC Declaration of Conformity, available at www.jotron.com
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Abbreviations and definitions
EMC
Electromagnetic Compatibility
LED
Light Emitting Diode
PWB
Printed Wire Board
RF
Radio Frequency
SART
Search and Rescue Transponder
VHF
Very High Frequency
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AMEND- INCORP. DATE PAGE(S) VERSION REASON
MENT NO. BY FOR CHANGE
1 ES 14.09.07 Total: 24 A New product
2 ES 02.04.08 10, 15 B Added text
3 ES 29.07.08 1 C Background
4 ES 04.08.08 15,16 D
5 ES 14.08.08 9,13,21 E Battery label
6 TH 12.02.09 10, 13-19, new tot. 28 F Brackets and layout
7 ES 16.12.09 24 G Added text
Amendment Records
Lifeboat bracket
updated
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The information in this book has been carefully checked and is believed to
be accurate. However, no responsibility is assumed for inaccuracies.
CAUTION!
This equipment contains CMOS integrated circuits. Observe handling precautions to avoid static discharges which may damage these devices. Jotron AS reserves the right to make changes without further notice to any
products or modules described herein to improve reliability, function or design. Jotron AS does not assume any liability arising out of the application
or use of the described product.
Jotron AS is a prime manufacturer of safety equipment designed for rescue
of human lives and their property. For safety equipment to be effective in
line with the design parameters it is important that they are handled, stowed
and maintained in compliance with the manufacturers instructions. Jotron
AS cannot be held responsible for any damage caused due to incorrect use
of the equipment or breach of laid down procedures or for failure of any
specific component or other parts of the equipment.
The chapter covering battery replacement (6.2.1) is added for information
only. Jotron AS does not take any responsibility for improper disassembling/
assembling of the beacon. We strongly recommend all service to be done
by authorized Jotron agents. In addition to normal service, Jotron agents
have the necessary equipment and knowledge to test the operational functions of the beacon. Non-original maintenance and/or service parts may
destroy the equipment function and performance.
WARNING / IMPORTANT
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Table of contents
1 General description 8
1.1 Tron SART20 features 9
2 Technical specifications 11
2.1 Electrical specifications 11
2.2 Mechanical specification 11
3 Functional description 12
3.1 General 12
3.1.1 Tron SART20 electronic assembly 12
3.1.2 Battery module 13
3.1.3 Bottom lid 13
4 Installation 14
4.1 Brackets 14
4.1.1 Wall bracket 14
4.1.2 Lifeboat bracket 15
4.2 Installation tips 17
4.2.1 How to use the brackets in life rafts 17
4.2.2 Installation diagram 18
4.2.3 Mounting a pipe 18
4.3 Using the telescopic pole 20
4.4 Using the 10m rope 21
5 Operating instructions 21
5.1 Activating Tron SART20 21
5.2 Deactivating Tron SART20 21
5.3 Test of Tron SART20 22
6 Maintenance and troubleshooting 24
6.1 Maintenance 24
6.2 Service 24
6.2.1 Replacing the battery module 25
6.2.2 Battery disposal 25
6.2.3 Incineration 25
6.2.4 Land filling 25
6.2.5 Recycling 25
7 Service agents 26
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Battery safety data sheet
(Form: EEC directive 91/155)
(2) SAFETY ADVICE
S2 Keep out of reach of children.
S8 Keep container dry.
S26 In case of contact with eyes, rinse immediately with plenty of water
and seek medical advice.
S43 In case of fire, use D type extinguishers. Never use water.
S45 In case of accident or if you feel unwell, seek medical advice immedi
ately (show the label where possible).
(3) FIRST AID MEASURES
In case of contact of cell contents with eyes, flush immediately with water for
15 min. With skin, wash with plenty of water and take off contaminated clothes.
If inhaled, remove from exposure, give oxygen, and seek medical advice.
(4) FIRE-FIGHTING MEASURES
Extinguishing media
Suitable: Type D fire extinguishers
Not to be used: Water - CO2 - Halon, dry chemical or foam extinguishers
Special exposure hazards
Generation of chlorine, sulphur dioxide, disulphur dichloride during
thermal decomposition.
Special protective equipment
Use protective working boots, rubber apron and safety glasses with side shields.
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1 GENERAL DESCRIPTION
Tron SART20 is emergency equipment consisting of:
1. Tron SART20 radar transponder.
2. Mounting rope for life rafts / life boats.
The 9 GHz radar transponder type Tron SART20 is developed by Jotron AS to
meet the rules and regulations for use on vessels and life rafts in the maritime
service. Tron SART20 meets the specifications for 9 GHz radar transponders
for use in search and rescue operations at sea.
The operating range of the Tron SART20 is up to 30 nautical miles, depending
on the height of the electronic unit and the radar height of the search and rescue unit (sea or airborne). With a radar height of 20m and the Tron SART20
placed at 1m above sea level, the range will be up to 10 nautical miles.
Tron SART20 is buoyant, however to obtain maximum performance the transponder should be placed in a vertical position and as high up as possible in
order to achieve maximum coverage.
Several mounting brackets and mounting aids are available to ensure correct
mounting and use of the radar transponder.
The purpose of the Tron SART20 is to perform a secondary alarm when search and rescue units are searching for a life raft / lifeboat in distress. The Tron
SART20 will help the units to pinpoint exactly where the distressed boat is located in a larger area. This is done with the help of the radar on the searching
ship or helicopter.
When the Tron SART20 is interrogated (hit) by a radar signal, it will immediately
start to transmit a number of sweeps covering the complete maritime 3 cm
radar band.
These sweeps are detected on the radar screen and are used to navigate directly towards the distressed life raft, for details on radar display see chapter
5.3.
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Maximum distance to a ship will normally be about 10 nm and approximately
30nm to a helicopter, dependent on the helicopters altitude. The transponder
will not give any alarms further away than this.
The primary alarm will usually be an Emergency Position Indicating Radio
Beacon (EPIRB) or distress call on VHF / HF - manual or via digital selcall.
The Tron SART20 should be activated immediately after activation of the EPIRB
or by instruction from the rescue control centre.
The batteries of the Tron SART20 will last at least 96 hours in standby after
activation and then minimum 8 hours of continuous operation.
Although the transponder does not send any alarm via satellite, VHF or other
radio communication, the use should be limited to short tests and emergency
situations.
This is to save battery capacity in case of a situation where the transponder is
needed.
1.1 Tron SART20 features
Watertight:
Tron SART20 is watertight to a depth of minimum 1 meter.
Buoyant:
Tron SART20 is buoyant in case the transponder is accidentally dropped into
the water. To increase coverage the SART20 should always be held or mounted
as high as possible.
Rugged design:
The Tron SART20 will withstand a drop from 20 meters into the water. It is resistant to seawater, oil and sunlight.
Handling:
Tron SART20 is designed for easy operation, with a brief operating instruction
printed on the unit. It comes standard with a 10 meter rope and a shackle hook
to be used for hanging the SART20 on the inside of a life raft.
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Indicators:
Tron SART20 is equipped with an LED and a built in buzzer to indicate operation.
The LED will normally give a flash each 4 seconds to show that the Tron SART20
is activated.
When a search and rescue unit is approaching the buzzer will sound each time
the SART20 is hit by the radar. A continuous sound from the buzzer means that
the ship or helicopter is close to the Tron SART20 and the radar is hitting the
Tron SART20 continuously.
Battery unit.
The battery module is to be replaced every 5.year. A battery expiry label on the
Tron SART20 housing displays the expiry date.
A new battery comes complete with cable and connector.
Figure 1.1, Battery expiry label
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2 TECHNICAL SPECIFICATIONS
2.1 ELECTRICAL SPECIFICATIONS
Frequency: X-band (3 cm) (9.2 - 9.5 GHz)
Temperature range: Operating: -20 to +55°C
Storage: -30 to +65°C
Radiated power: > 400 mW e.i.r.p (+26 dBm)
Sweep type: 12 sweep sawtooth type
Forward 7.5 us ±1 ms
Return 0.4 us ±0.1 ms
Starts with return sweep.
Receive sensitivity: Better than -50 dBm e.r.s.
Response delay: Max 0.5 ms
Antenna pattern: Horizontal polarization.
Omni directional radiation in the horizontal plane.
Greater than ±12.5 degrees elevation angle in the
vertical plane.
Battery: Two C-size SAFT LSH 14 light Lithium batteries,
5 years service life.
Battery capacity: 96 hours standby +8 hours continuous operation
when activated by a radar with 1 kHz prf at -20°C.
5 years storage.
2.2 MECHANICAL SPECIFICATION
Materials used:
Transponder housing: Polycarbonate with 10% fiberglass.
Bracket: Anodized aluminum.
Transponder dimensions:
Max diameter: 89 mm
Length: 250 mm
Weight: 482 g
Transponder with standard storage bracket:
Max diameter: 90 mm
Length: 250 mm
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3 FUNCTIONAL DESCRIPTION
3.1 GENERAL
Tron SART20 consists of a housing sealed at the lower end with a bottom lid
and may be split into the following main parts:
1. Bottom lid.
2. Housing with Tron SART20 electronic assembly and battery module.
The housing is made of polycarbonate.
Figure 3.1, Tron SART20 disassembled
3.1.1 Tron SART20 electronic assembly
Tron SART20 electronic assembly is inserted into the Tron SART20 housing.
It consists of the transceiver module and antenna.
1. Transceiver Board in metal box
2. Antenna (9GHz).
Figure 3.1.1 Tron SART20 electronic assembly
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1 2
1 2
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3.1.2 BATTERY MODULE
The battery module is inserted into the Tron SART20 housing.
A battery expiry label on the Tron SART20 housing displays the battery expiry
date.
A new battery module comes complete with cable and connector and can be
changed by opening the bottom lid at of the Tron SART20.
Figure 3.1.2 TRON SART20 BATTERY
- module without cable and connector
3.1.3 BOTTOM LID
The Bottom lid includes four items:
1. The winder hook
2. The screw ring
3. The light tower
4. The O-ring
Figure 3.1.3 Bottom lid
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1
2
3
4
Battery expiry
label
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4 INSTALLATION
Tron SART20 can be mounted several ways, depending on the options available. As a general rule, the transponder should be mounted as high as possible
to increase line of sight to the search and rescue units.
Metal objects close to the transponder should be avoided, these will limit the
performance in the directions they are located.
4.1 BRACKETS
There are two different mounting brackets available.
1. Wall bracket
2. Lifeboat bracket (optional)
4.1.1 WALL BRACKET
A wall bracket is delivered with the Tron SART20 and should be used for storage of the transponder. The bracket should preferably be mounted in a vertical
position and in a place where the Tron SART20 is easily available in case of an
emergency.
Figure 4.1.1a, wall bracket. Figure 4.1.1b, Tron SART20
mounted in wall bracket.
The bracket should be mounted with four screws (Ø 4 mm).
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4.1.2 LIFEBOAT BRACKET (optional)
The outdoor lifeboat bracket should be mounted vertically on the roof of the
lifeboat (as high as possible).
Activate the transponder and put it into the bracket. Secure the transponder
to the bracket. The bracket will fit a pipe with a maximum diameter of 50mm.
Figure 4.1.2a, Lifeboat bracket.
Item Document Title
nr. nr.
1 M-82746 WALL BRACKET
2 M-84163_WELDAMENT M-84163_BRACKET_UNIVERSAL_
WELDAMENT D 1
3 M-80312 Nut nylock M4 DIN 985
4 M-84676 Screw, DIN965 - Pozidrive M4x12
5 M-84854 Screw, DIN965 - Pozidrive M6x70
6 M-84855 Screw, DIN965 - Pozidrive M6x90
7 M-84838 PIPE CLAMP
13 M-84875 WASHER PLATE
14 M-91469 Nut nylock M6 DIN 985
15 M-82275 WASHER, DIN9021 Ø6mm
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Figure 4.1.2a, Tron SART20 lifeboat bracket. Figure 4.1.2b, Tron SART20 to
put into lifeboat bracket.
Figure 4.1.3 Example of Mounting the Bracket on
Interior and Exterior Walls of a Lifeboat
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Entrance/Exit
Tent air tube
SART20 main unit
Hang the SART20 from the SART20
installation seat or radar reflector
Pole
SART20 main unit
Figure 4.2.1, How to mount Tron SART20 to a life raft
4.2 INSTALLATION TIPS
4.2.1 How to use the bracket in life rafts
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Tron SART20 main unit
The state when inserted
into the wall bracket
Clip
Insert the clip of the
SART20 main unit into the
wall bracket from a top
Wall
Wall bracket:
- For mounting, use 3 mm
screws or wood screws,
depending on the wall type
4.2.2 Installation diagram
4.2.3 Mounting to a pipe
Figure 4.2.2, Installation diagram of the SART20 main unit and the wall bracket
Figure 4.2.3, Examples of pipe mounting
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Figure 4.2.4, Mounting to a pipe, example of reference
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4.3 USING THE TELESCOPIC POLE
Figure 4.3, Tron SART20 with telescopic pole attached.
A telescopic pole can be used to extend the height of the Tron SART20, inside
or outside the life raft/boat. Simply extend the attached pole to the full length
(app. 1,2m from the top of the Tron SART20). Make sure that the rod is locked
by pulling hard when it is fully extended. The rod can now be fastened or held
by a person. Ensure the rod is held as vertical as possible when activating the
Tron SART20.
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4.4 USING THE 10M ROPE
The 10m. rope is meant to hang the Tron SART20 inside a life raft. Any objects
that the rope can be attached to can be used. As long as the transponder is
kept away from any metal objects, the
performance will not be notable degraded because of the canvas of the life raft.
Figure 4.4, Tron SART20 with 10m rope attached.
5 OPERATING INSTRUCTIONS
5.1 ACTIVATING TRON SART20
1. Break seal at switch.
2. Pull locking pin and make sure that the switch enters the “ON” position. An
audible “BEEP” will be heard and the indicator led will start to flash.
3. Place (or hold) the transponder in a vertical position as high as possible.
When the Tron SART20 is within range of an active 3 cm radar, the inter-
nal loudspeaker will be activated. A handheld VHF radio should now be used
to establish contact with the approaching boat or helicopter.
5.2 DEACTIVATING TRON SART20
1. Move the switch to the “OFF” position.
2. Replace the locking pin.
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5.3 TEST OF TRON SART20
Test of the Tron SART20 is done using the ships own 3 cm radar. The radar
display will show different patterns depending on the range to the transponder.
See Figure 5.3a, b and c for details of the radar display. Note that the examples
shown are typical and will vary with the radar performance (height, power output and sensitivity).
With the transponder located close to the radar the signals will appear as rings
on the radar display. The rings may be broken in some sectors, depending on
ship construction and other obstacles, and does not indicate an error in the
transponder. Placing it further away will reduce the signals to 12 dots on the
radar display, showing
the direction to the transponder.
1. Hold the switch on the Tron SART20 in the “TEST” position.
2. Simultaneously a person should observe the radar display to check for cor
rect pattern. The radar should be set for a 10 nm range.
3. The test should preferably be done in open sea to avoid interference on the
radar display from land echoes.
4. Alternatively, a radar of a nearby ship can be used to test the transponder.
A ship to ship VHF channel should then be used to confirm operation.
Figure 5.3a
Typical display when Tron SART20 is located near (<0.2 nm) the radar.
Radar range is 10 nm. Rings are off.
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Figure 5.3.b
Typical display when Tron SART20 is located close (1nm) to the radar.
Radar range is 10 nm. Rings are at 2 nm.
Figure 5.3c
Typical display when Tron SART20 is located away (>2 nm) from the radar.
Radar range is 10 nm. Rings are at 2 nm.
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CAUTION!
While the Tron SART20 is activated it will respond to any 3 cm radars
within range. Tests must be made as short as possible (5 min) to avoid
interference and to avoid wasting battery capacity.
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6 MAINTENANCE AND TROUBLESHOOTING
6.1 MAINTENANCE
Tron SART20 requires the following maintenance:
At least every 6. month.
The transponder should be taken out of its bracket and tested against a radar,
using the procedure in chapter 5.3. Either the ships own radar could be used or
the radar of a nearby ship. Note that the self test use the internal battery and
will reduce the operational lifetime of the equipment - therefore the test should
be limited to not more than once every month.
Every 5. year.
The battery unit must be replaced every 5 year. Storage of batteries over a long
period of time will reduce their capacity. To ensure long and reliable operation
the battery unit must be replaced every 5 year. The battery replacement can be
performed on board using the procedure in chapter 6.2.1.
6.2 SERVICE
Warranty Service
The warranty of the equipment is void if the customer has tried to repair, modify or rebuild the unit, deliberate or accidental damage, failure to follow Jotron
instructions with respect to approved service agents or if the unit has been exposed to environmental conditions outside the specifications of the unit. As
standard Jotron AS warrants that this product will be free from defects in materials and workmanship for a period of 12 months from the date received by end
user, limited to 18 months from purchase from Jotron AS.
If the unit is in need of repair, please return it carriage paid to the agent that you
purchased it from. Provided that the unit(s) returned for repair is found to be
under warranty, man-hour cost and material cost will be covered by Jotron AS.
Additional costs not related to repair/replacement of the unit will not be covered.
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Out of Warranty Service
For defects arising from normal wear and tear after 12 months of operation,
limited to 18 months from Jotron AS, normal service conditions will apply. For
details see: www.jotron.com
6.2.1 REPLACING THE BATTERY MODULE
Refer to Figure 3.1 and do the following steps:
1. Open the transponder by turning the screw ring counter clockwise.
2. Remove the rubber gasket.
3. Slide out the battery module and disconnect the battery connector.
4. Ensure the silicagel bag and anti corrosion tape supplied with the battery are fitted to inside of
Tron SART20.
5. Connect the new battery module and slide it into the Tron SART20 housing.
6. Insert rubber gasket.
7. Tighten the screw ring by turning it clockwise.
8. Change the battery expiry label on the Tron SART20 housing with a new updated label.
9. Test the transponder according to procedure in chapter 5.3.
6.2.2 BATTERY DISPOSAL
Dispose in accordance with applicable regulations, which vary from country
to country.(In most countries, the disposal of used batteries is regulated and
end-users are invited to dispose of them correctly, through non-profit organizations, mandated by local governments or organized on a voluntary basis
by professionals).Lithium batteries should have their terminals insulated prior
to disposal.
6.2.3 INCINERATION
Incineration should never be performed by battery users but by trained professionals in authorized facilities with proper gas and fumes treatment.
6.2.4 LAND FILLING
Leachability regulations (mg/l)
6.2.5 RECYCLING
Send to authorized recycling facilities, through a licensed waste carrier.
Component Leachability EC limit EPA Other*
Iron 100 5
Nickel 100 500 2 0,5
* Applicable to France
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8 SERVICE AGENTS
Please look at www.jotron.com for Marine Service Agents.
Jotron Group subsidiary companies:
Jotron UK Ltd.
Crosland Park, Off Crowhall Road
Cramlington
Northumberland NE23 1LA
United Kingdom
Tel +44 1670 712000
Fax +44 1670 590265
E-mail: sales@jotron.co.uk
Jotron Asia Pte. Ltd.
Changi Logistics Center
19 Loyang Way #04-26
Singapore 508724
Tel +65 65426350
Fax +65 65429415
E-mail: sales@jotron-asia.com
Jotron USA, Inc.
10645 Richmond Avenue, Suite 140
Houston, TX 77042
USA
Tel +1 713 268 1061
Fax +1 713 268 1062
E-mail: contact.us@jotron-usa.com
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