jotron Tron SART20 User manual

USERS MANUAL
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Tron SART20

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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 pre-
cautions to avoid static discharges which may damage these devices. Jo-
tron AS reserves the right to make changes without further notice to any
products or modules described herein to improve reliability, function or de-
sign. 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 func-
tions 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 shie-
lds.
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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 res-
cue 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 tran-
sponder 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 se-
arch 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 lo-
cated 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 di-
rectly 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 re-
sistant 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 availa-
ble. 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 sto-
rage 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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