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STARFISH TOWED SONAR SYSTEM USER GUIDE 2 CONTENTS Contents.....................

STARFISH TOWED SONAR SYSTEM USER GUIDE 2 CONTENTS Contents............................................................................................................2 Introduction......................................................................................................3 Important Safety Instructions ..........................................................................3 Electrical Safety ...................................................................................................... 4 Operational Safety................................................................................................... 4 Other Precautions.................................................................................................... 4 What your system contains....................................................................................... 5 Getting Started ....................................................................................................... 5 Setting Up The System ......................................................................................6 Choosing A Power Supply ......................................................................................... 6 DC Power............................................................................................................... 6 AC (Mains) Power.................................................................................................... 6 Connecting The Components..................................................................................... 7 Rigging The Sonar Transducer................................................................................... 8 Adjusting The Towing Position ................................................................................... 8 Securing The Sonar To The Boat................................................................................ 9 Operating the Sonar..........................................................................................9 General Towing Guidelines...................................................................................... 10 Avoiding Hazards .................................................................................................. 11 Understanding Sidescan Imagery ...................................................................12 What Is A Side-Scan Sonar? ................................................................................... 12 What Does A Side-Scan Sonar Image Look Like?........................................................ 13 Calculating Depth Below The Sonar (Altitude) ............................................................ 13 Calculating The Distance To A Target........................................................................ 14 Estimating The Sonar Depth.................................................................................... 14 Acoustic Shadows.................................................................................................. 14 Reflected Target Intensity....................................................................................... 15 Example Side-Scan Sonar Images............................................................................ 16 Gain & Contrast Settings ........................................................................................ 17 Shallow Water & Channels ...................................................................................... 17 Tips For Good Imagery........................................................................................... 18 Care Of Your Starfish ......................................................................................19 Operational Care ................................................................................................... 19 Maintenance & Cleaning ......................................................................................... 19 Storage ............................................................................................................... 19 Troubleshooting..............................................................................................20 Product Support..............................................................................................21 StarFish Website ................................................................................................... 21 Technical Support.................................................................................................. 21 Limited Warranty Policy.......................................................................................... 22 Notices............................................................................................................23 Handling Recommendations .................................................................................... 23 Waste Electrical & Electronic Equipment Statement.................................................... 23 Restriction of Hazardous Substances Statement ......................................................... 23 Appendix A - How Your StarFish Works...........................................................24 Monotonic Sonar Operation..................................................................................... 24 Chirp Sonar Operation............................................................................................ 25 Appendix B – Specifications ............................................................................26 Index ..............................................................................................................27 3 INTRODUCTION Thank you for purchasing your towed StarFish Seabed Imaging System, a revolutionary high definition towed side-scan sonar system which produces near photographic quality sonar images of the seabed. Whether surveying lakes, rivers or the open ocean for dive sites, submerged structures, shipwrecks or research purposes, StarFish gives you the capability to capture detailed images of the seabed for work or play, making hi-tech seabed imaging accessible to anyone. With StarFish the seabed is your playground… Simply tow the StarFish side-scan sonar from a boat or any other vessel, large or small, to capture real-time digital images of the seafloor below. StarFish is truly 'Plug and Play' connecting to any Microsoft® Windows® based PC or laptop via a USB connection. The simple intuitive StarFish “Scanline” software makes seabed imaging extremely easy for novices and experienced side scan sonar users alike. Small, light and very rugged, StarFish can easily be deployed and operated by a single person from the smallest of vessels in the most remote locations. Before proceeding, we recommend that you read the safety, deployment and operation guidelines in this user guide, in order to get full benefit from the features of the StarFish system. We hope you get many years of trouble free use from your StarFish sonar. However, should you have any difficulties please refer to the “Product Support” section at the end of this manual for details on how to obtain technical support, upgrades and repairs. IMPORTANT SAFETY INSTRUCTIONS Before using your towed StarFish Seabed Imaging System, please read and follow these safety instructions. Throughout this document the following symbols are used to indicate special precautions or procedures you should note… WARNING! This symbol indicates a warning you should follow of to avoid bodily injury and damage to your equipment. CAUTION This symbol denotes precautions and procedures you should follow to avoid damage to your equipment. NOTE This symbol denotes special instructions or tips that should help you get the best performance from your StarFish system. Safety guidelines continued on next page… 4 ELECTRICAL SAFETY  The AC power adaptor and surface control box are NOT protected against the ingress of water, so take care to avoid exposing the unit to sources of conductive liquids. Dry wet hands before handling the AC power adaptor or surface control box.  Do not attempt to disassemble or service this product yourself (outside the scope described in this manual). Contact StarFish technical support for any maintenance, spares or repair work required.  Do not overload a mains supply outlet, extension cord or adapter as this may result in electric fire or shock.  Do not modify the power cord or plug.  Do not place the AC adaptor or power cord near any heat sources that may melt the protective insulation.  Do not use this product if any of the cabling, or housings of its component parts appear to be damaged or compromised for the ingress of water.  Do not use (and ensure the product is unplugged) in situations where a power-line surge may occur (such as a lightning storm), or if the product is not used for a prolonged period of time.  Ensure that the power supply has suitable earthing, and electrical shock risk is minimised through the use of fusing and residual-current-detection (RCD) devices. OPERATIONAL SAFETY  Do not rely on the product to necessarily represent the immediate sub-surface conditions below the boat, and as such this product should not be used as a direct means of avoiding submerged objects, shallow water & grounding, collisions with other vessels, boat damage or personal injury. If you are in doubt about any of these hazards, always operate your boat and sonar at reduced speeds, and proceed with caution.  Do not rely on this product as a navigational aid.  Do not allow the towing cable to obstruct or present a hazard to other personnel on the deck area or passage-ways of the boat. Use the provided cable-tie to coil and secure any surplus cable.  Do not rely on the connection between the electronics box and the towing cable, as a means of securing the towed sonar to the boat. The towing cable should always be tied off in a secure fashion to a suitable towing cleat or other appropriate fastening on the boat.  When towing the sonar, it may extend to a distance of 20 metres behind the vessel, and up to similar depths below it (depending on towing speed). Be vigilant of underwater hazards that may foul the towing line and damage both the sonar product and the boat. Additionally, when changing course, be aware of any hazards (such as cables to buoys, other boats, fishing nets, jetties and landing stages, etc.) that lie between the sonar and the boat, and may be fouled by the towing cable. OTHER PRECAUTIONS For storage and maintenance information, please refer to the section “Care Of Your Starfish” (see page 19). If you have any other safety or operational queries, please contact StarFish technical support (see page 21). 5 WHAT YOUR SYSTEM CONTAINS Before proceeding, please check that your StarFish system box contains the following items…  StarFish towed sonar transducer head (with supplied cable).  StarFish top-box electronics module.  AC to DC universal power adapter (and international plug adaptors).  DC power lead – cigar plug (fused) to 2.1mm plug.  DC power lead – cigar socket to crocodile clips.  USB 2.0 Cable (type-A to type-B connectors).  StarFish “Scanline” software and drivers CD.  User Guides.  Reusable cable tie and bag of sundries. If you purchased an ‘advanced system’, you should also have…  Rigid, water-proof, transit case.  StarFish USB GPS Receiver.  StarFish towed transducer pole-mounting bracket. You will also need…  Microsoft “Windows XP”, “Windows Vista” or “Windows 7” compatible computer (or laptop), with 1 free USB port (minimum).  Battery (for DC operation) or suitably protected AC mains outlet (see page 6). Additionally, you may also require…  Rope for securing sonar towing cable to your boat (see page 9). GETTING STARTED To get started straight away, you can use the accompanying “Quick Start” guide to get up-and-scanning, or read on for further more detailed operational instructions and tips. For further details on installing and operating the “Scanline” software package, please refer to the “StarFish Scanline Software User Guide” booklet. Note: Do not connect the sonar USB electronics to the PC until the “Scanline” software and drivers have been installed – this will simplify the installation procedure. 6 SETTING UP THE SYSTEM CHOOSING A POWER SUPPLY Before setting up your StarFish system, you first need to decide on the power source you will use – either…  A DC supply (such as a battery or boat electrical system), or  Mains from the universal AC-DC adapter included with the system. While the StarFish has internal voltage and current protection circuitry, any DC supply you use should be externally fused with a quick blow fuse rated at 1A. For best performance of the StarFish, you should ensure any power source is “clean”, meaning it is free from electrical noise possibly caused by mains-inverters, electrical motors or any other similar “high-current switching” devices. Additionally, for DC supplies, the source should be a fully regulated and smoothed power source – a dedicated battery is ideal for this. DC POWER In marine conditions, where there is a high chance of equipment getting wet, the use of a low-voltage DC power supply is always recommended. The StarFish electronics module has a 2.1mm DC input socket that will accept voltages between 9V and 28V, and will require uploads/Litterature/ starfish-towed-side-scan-user-guide.pdf