S4 RESCUE SART Search And Rescue Transponder User Manual
CONTENTS Warnings....................................................................................1 General description...................................................................2 SART principle of operation .....................................................2 Installation .................................................................................4 SART General Assembly...........................................................5 Operating instructions .....................................
Warnings • This SART is an emergency device for use only in situations of grave and imminent danger. • False alarms cost lives and money. Help to prevent them; understand how to activate and disable your equipment. • Read the complete manual before installing, testing or using the SART. • The SART contains no user servicable parts. Return to your dealer for service. • Dispose of this device safely. Contents include Lithium batteries; do not incinerate, puncture, deform or shortcircuit.
General description The SART (Search And Rescue Transponder) is designed for survivor location during search and rescue operations. CARRY-OFF SART Supplied as one integral unit. This is normally mounted in a bulkhead bracket (supplied) which is used to stow the unit on the mother vessel. On abandoning to a survival craft the SART can be carried in one hand off the stricken vessel and mounted through a port in the canopy of the survival craft using the telescopic pole.
The SART operates by receiving a pulse from the search radar and sending back a series of pulses in response, which the radar will then display as if they were normal echoes. The first return pulse, if it sent back immediately, will appear in the same place on the PPI as a normal echo would have done. Subsequent pulses, being slightly delayed, appear to the radar like echoes from objects further away. A series of dots is therefore shown, leading away from the position of the SART.
Installation The preferred mounting location is inside the vessel, and protected from the elements, usually on the ship’s bridge wing. The SAR should be mounted where it will not get in the way of day-to-day operations, but where it can readily be accessed near an emergency exit in the event it is needed. Do not install the SART within the ship's radar beam. Fix the mounting bracket to a bulkhead in a convenient location.
SART General Assembly Ring for internal liferaft mounting Radome Mounting pole Velcro strap Operating switch ring Battery pack Lanyard 5 Bulkhead Mounting bracket (Velcro strap omitted for clarity)
Operating instructions Remove from bulkhead bracket: Release Velcro strap and lift SART from bracket To switch on: Pull the security tab away from the body of the SART Rotate the switch ring clockwise (ie to the left) to the ON position marked by “1” Switch ring ON Security tab To extend the telescopic pole: Grasp rubber cover at bottom of pole, and twist the pole to release it in the pole mount.
Self test facility Regular testing of the SART is advised. The duration of the test should be limited to as short a time as possible as the SART response may be received by other vessels which are within range. There are no operational differences between TEST and ON modes; the rotary switch must be held in the TEST position, on release it returns to the OFF position. 1. 2. 3. 4. Ensure compliance with all applicable Health and Safety instructions when working in proximity to a radar transmitter.
Technical description A single switched antenna is used for both receive and transmit functions; the switch normally connects the antenna to the receiver circuit. In the standby state only the receiver portion of the SART is powered to reduce battery consumption to a minimum. In this condition the indicator circuit causes the LED to flash once every two seconds.
Dimensions 9
Operation of marine radar for SART detection Radar Range Scale When looking for a SART it is preferable to use a range scale between 6 and 12 nautical miles. This is because the spacing between the SART responses is about 0.6 nautical miles (1125 metres) and it is necessary to see a number of responses to distinguish the SART from other responses.
Anti-Clutter Sea Control For optimum range SART detection this control should be set to the minimum. Care should be exercised as targets in sea clutter may be obscured. Some radar sets have automatic/manual anti-clutter sea control facilities in which case the operator should switch to manual. Anti-Clutter Rain Control This should not be used when trying to detect SARTs as the SART responses may be removed by this control.
Technical Specification FREQUENCY: POLARIZATION: SWEEP RATE: RESPONSE SIGNAL: FORM OF SWEEP: PULSE EMISSION: EIRP: RX SENSITIVITY: DURATION: TEMP RANGE: RECOVERY TIME: ANTENNA HEIGHT: RESPONSE DELAY: ANTENNA BEAM: WEIGHT: DIMENSIONS: BUOYANCY: 9.2GHz - 9.5GHz Horizontal 5µs per 200MHz nominal 12 sweeps Forward: 7.5µs ± 1µs Reverse: 0.4µs ± 0.1µs 100µs nominal >400mW (+26dBm) Better than –50dBm (0.
Declaration of Conformity 13
Declaration of Conformity (page 2) 14
Limited Product Warranty Subject to the provisions set out below McMurdo Limited warrants that this product will be free of defects in materials and workmanship for a period of 12 months from the date of purchase.
User Notes 16
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McMurdo Ltd Silver Point Airport Service Road Portsmouth Hampshire United Kingdom PO3 5PB Telephone: Int +44 (0)23 9262 3900 Fax: Int +44 (0)23 9262 3998 sales@mcmurdo.co.uk www.mcmurdo.co.
