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DiveTracker™ Sport SONAR Navigation System for Divers Owner’s Manual Rev 2B, August 2006 Desert Star Systems, LLC 3261 Imjin Road Marina, CA 93933 Phone: (831) 384-8000 FAX: (831) 384-8062 www.desertstar.com Diving is a dangerous and potentially life threatening activity. DiveTracker™ Sport must only be used by trained divers. Despite all care, DiveTracker™ Sport can fail unexpectedly. To reduce your chances of death, serious injury, and damage to property, never use DiveTracker™ Sport or any other method or instrument as your sole means of navigation. Always have at least one other means of navigation available to you. Your Safety is Your Responsibility; Use Common Sense and Good Judgment! LIABILITY DISCLAIMER By purchasing or using DiveTracker™ Sport, it is agreed and understood that in no event will Desert Star Systems or any of its representatives be held liable for any personal injuries or death or damages to property resulting from its operation or for any other damages whether direct, indirect, or consequential, even if Desert Star Systems has been advised of such actual or potential damages. Desert Star Systems dive products are authorized for use only by properly trained divers. The user must understand that the products are liable to sudden failure. Diving is an inherently dangerous activity, and proper safety procedures demand that the diver never rely solely on just the DiveTracker™ Sport or any other single instrument, method or mechanism for his/her safety or the safety of property. Thank You for Purchasing DiveTracker™ Sport! Your DiveTracker™ Sport is a state-of-the-art underwater navigation product. This instrument is designed and manufactured in the United States of America to the highest standards of quality and performance. This booklet will show you how DiveTracker™ Sport works, how to operate and maintain it, and how to interpret the information provided by the system. Please read this booklet carefully and in its entirety before diving with DiveTracker™ Sport. Only by doing so will you be able to obtain the full potential of the system and operate it safely. Be aware that diving is a dangerous activity. DiveTracker™ Sport is designed to help you, the well-trained and certified diver, to navigate under water. If you are not a certified diver, obtain proper training before using the product or else return your DiveTracker™ to the place of purchase for a full refund. Your DiveTracker™ Sport is an aid to navigation, and not a piece of life support gear. As such, it is unlikely that you will be hurt by the instrument itself any more than you might by a flashlight or any other object of similar shape, size, and weight. The main danger in the use of DiveTracker™ Sport lies in an over-reliance from the information provided by it, just as when an electronic system might fail spontaneously and unexpectedly due to component failure. As a SONAR based system, it can fail at any time due to changing environmental (acoustic) conditions. For these reasons, you must never rely on DiveTracker™ Sport or any other instrument, tool or method as your sole means of navigation. Always dive in such a manner that the failure of DiveTracker™ Sport will not put you, your dive partners or property at the risk of injury or death! If you heed these warnings, DiveTracker™ Sport will greatly increase the efficiency and enjoyment of your dives. To a degree, and supposing proper usage, it can also increase your diving safety. Congratulations on your purchase of this advanced and unique system! We are sure you fill find DiveTracker™ Sport a very worthwhile investment. About this Manual This manual is designed for you, the user of DiveTracker™ Sport. Within it, you will find information and advice on how the system works, how to use it, how to maintain it, and how to get the most performance out of it. Throughout this manual, you will find information highlighted by key words and the placement in either black or gray boxes. Please pay special attention to all information displayed in this manner. The following three boxes serve as a key to this information. Information displayed under the word WARNING indicates a potentially hazardous situation that could result in serious death ​ ​ or injury. In all these cases the hazard is not caused by the product itself, but rather by the potential consequences of the exclusive reliance on the information presented (or not presented) by DiveTracker™ Sport. —- Information displayed under the word CAUTION! indicates a situation that could result in damage to your DiveTracker™ Sport. ​ ​ 1. How Does DiveTracker™ Sport Work DiveTracker™ is a SONAR (Sound Navigation and Ranging) based navigation system. SONAR ​ ​ ​ ​ ​ ​ systems like DiveTracker™ Sport emit and receive high frequency sound. While light and most radio waves travel far worse in water than they do in air, sound actually propagates not only significantly faster but also much further in water than it does in air. For this reason, sound is used in many underwater applications. People use sound for things like fish finders, depth sounders, and detecting enemy war ships. Some marine mammals use it to navigate, to communicate, and even to inspect pray. DiveTracker™ Sport also makes use of sound. The system consists of two components. The transmitter or pinger emits sound pulses or ‘pings’ that propagate in all directions. When you point the receiver in the direction of the transmitter, it detects those pulses and indicates their strength on the LED strip display. Just swim in the direction of the strongest signal to find your way back to the transmitter marked site (dive boat, anchor line, etc.). Notice the strength of the signal to obtain an estimate of the transmitter’s distance. If you have done night dives before, you probably know the practice of tying a strobe light to the anchor chain or lowering it over the side of the boat. As long as you are ‘within range’ of the strobe light, you can always find the direction back to the boat – or to any place that the strobe is attached to. By judging the intensity of the strobe light, you can also estimate its distance. DiveTracker™ Sport relies on the very same principle – except that sound energy instead of light is used as the signaling medium. The DiveTracker™ Sport transmitter is the equivalent of the strobe light, whereas the DiveTracker™ Sport receiver is the equivalent of your eyes seeing the strobe flashing. However, there are two significant advantages to the use of sonar instead of light. ● The range of a strobe light is determined by water visibility or turbidity. In clear water, the strobe may work to a few hundred feet. If the water is turbid, you will be restricted to just a few feet. DiveTracker™ is not affected by water turbidity and will typically give you a range of 2,000 feet. ● Strobe lights work well at night, but not at daytime when the strobe light is overpowered by sunlight. DiveTracker™ Sport will work just as well during the day as it does at night. Of course, SONAR systems like DiveTracker™ Sport have limitations too. Sound waves can be absorbed, reflected, and refracted. Excessive noise in the water can raise a ‘curtain’ that the systems cannot penetrate and sonar echoes can lead you in wrong directions. DiveTracker™ Sport includes a number of mechanisms to deal with these problems. These mechanisms allow the system to operate under most conditions, but they certainly don’t make it perfect. Refer to the chapter ‘Beware of the Sonar Gremlins’ for some guidance on the things that can go wrong and how to deal with them. Please read it carefully. Again, if you hope to stay alive, please never use DiveTracker™ Sport or any other instrument, tool or method as your sole means of navigation. 2. The DiveTracker™ Sport Hardware Your DiveTracker™ Sport system consists of two components. The DiveTracker™ Sport transmitter (DTS-TX) works as a ‘sonar beacon’, emitting sounds in all directions. The transmitter is used to ‘mark’ a site. The DiveTracker™ Sport receiver (DTS-RX) is typically carried by the diver. This unit picks up the sonar signals from the transmitter and tells you the direction and distance of the transmitter marked site. 2.1 The Transmitter (DTS-TX) The DiveTracker™ Sport transmitter is housed in a cylindrical PVC container. The red low-battery LED on the transmitter lights up when approximately 1/4 of the battery power is remaining. The transmitter is activated by a thumb wheel switch on the side of the housing. Align the ON indicator on the knob with the red mark on the housing to activate the transmitter. All other positions will switch the transmitter off. The DiveTracker™ Sport Transmitter (DTS-TX) The transmitter housing design has been changed. The transmitter now uses the same type of housing as the receiver. A picture of the new transmitter housing was not available at the time of print. The text reflects the new housing design. Located on both the bottom end and the top end of the housing are eye rings. The eye ring on the top of the unit is normally used to secure the transmitter to a line. The line is lowered over the side of a boat, tied to an anchor line or is otherwise used to tie the transmitter to the location you wish to mark. The eye ring on the bottom of the transmitter may be used to weigh down the transmitter in a strong current or to attach a floatation device in order to raise the transmitter up from an ocean floor mounting point. The top of the DiveTracker™ Sport transmitter is occupied by a removable cap.
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