NO-STOP DIVE COMPUTER OPERATING MANUAL depth depth DO NOT FLY LOGBOOK dive time h dive time DO NOT FLY DIVEPLAN LOGBOOK SPEED DIVE % S L O W STOP NO STOP DESATURATION ft h m h max. depth deco info ® DIVE SPEED % S L O W STOP NO STOP DESATURATION American ft h m ® max. depth deco info SWISS MADE BY UWATEC AG Safety considerations You must carefully read this entire manual before using your Aladin® Sport. Diving has many inherent risks. Decompression sickness is among the most serious of those risks. Even if you follow the instructions of this manual in a careful fashion, it is still possible that you may be seriously injured or die from decompression sickness or some other inherent risk of scuba diving. Unless you are fully aware of these risks and are willing to personally accept and assume responsibility for those risks, do not use the Aladin® Sport! WARNING The Aladin® Sport is a sophisticated decompression tool to assist a trained and certified diver in making decisions concerning dive planning and execution. As with any tool, the Aladin® Sport may be misused if the following safety and operational precautions are not strictly followed. If they are followed, careful use of the Aladin® Sport can increase your diving enjoyment and reduce your risk of decompression sickness. If they are not, you will be placing yourself at serious risk for decompression sickness. While the Aladin® Sport is a technically advanced tool based on a biophysical model of decompression sickness, neither it nor any other diving computer (or table) can actually monitor the physiological changes that occur in your body as you dive. In addition, each diver will vary in his or her susceptibility to decompression sickness. Not only that, but each individual diver`s own susceptibility may vary from day to day. Combined with the fact that decompression modelling is an inexact science, and of necessity must be based at least partly on certain unproven assumptions, it is incumbent upon you, the individual diver, to dive responsibly and to carefully follow all standard safe diving practices as well as the admonitions contained in this manual. Operating Manual Aladin® Sport B Aladin® Sport · Interface and logbook-software DataTrak/DataTalk (Option) B · Logbook (Option) DIV E dep th dive tim e ma x. d epth dec o in fo ® · External Memory Extension ESE (Option) ­ C + E · Dive Computer Aladin® Sport Operating Manual Aladin® Sport Important remarks concerning signal words and symbols This operating manual makes use of the following icons to indicate especially important comments: Remarks: Informations and tips which are important for optimal use of the functions of your Aladin® Sport. WARNING Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. The following symbols are used in the operating manual: flashing display B Operating instruction for manual input (Example: bridging contacts B and E) ­+E December 1995, Copyright by Uwatec Switzerland Operating Manual Aladin® Sport D Safety considerations Guidelines for the use of Aladin® Sport: The following guidelines for using Aladin® Sport are derived from the latest medical research and the recommendations of the American Academy of Underwater Sciences for diving with diving computers. Following these guidelines will greatly increase your safety while diving, but cannot guarantee that decompression sickness will not occur. ­ In accordance with the recommended maximum diving limit of all instructional agencies, do not dive deeper than 130 feet. ­ The decompression algorithm contained in the Aladin® Sport only serves for emergency or unintended decompression. ­ On all dives with the Aladin® Sport, make a safety stop for three to five minutes within the ten to thirty feet zone. ­ Never use the Aladin® Sport for repetitive, "square" dives deeper than 60 feet. A square dive is a dive that is performed for its duration at a uniform depth. ­ Always make the deepest dive of the day first when repetitive dives are planned, and for each successive dive make sure that the deepest portion of that dive is done at the beginning of the dive. ­ The Aladin® Sport is designed for dives made with compressed air only. Do not use the Aladin® Sport for dives made with nitrox or other mixed gases. ­ All divers using dive computers to plan dives and indicate or determine decompression status must use their own computer. E Operating Manual Aladin® Sport Safety considerations ­ If the Aladin® Sport fails at any time during the dive, the dive must be terminated, and appropriate surfacing procedures (including a slow ascent and a 3 to 5 minute safety stop) should be initiated immediately. ­ On any given dive, all divers in a buddy group must follow the most conservative dive computer for that particular dive. ­ You should not dive for a period of twenty-four hours before activating the Aladin® Sport to use it to plan or control your diving. ­ You MUST follow the ascent rates as indicated by the Aladin® Sport, and should the computer fail for any reason, you must ascend at a rate of no greater than 60 feet per minute. ­ You MUST be familiar with all signs and symptoms of decompression sickness before using the Aladin® Sport! Seek IMMEDIATE treatment for decompression sickness should any of these signs or symptoms occur after a dive! There is a direct correlation between the efficacy of treatment and the delay between the onset of symptoms and the treatment for decompression sickness. ­ Always observe the optical alarm signals of the Aladin® Sport. Avoid situations of increased risk for decompression sickness which are marked with a warning sign in this operating manual. ­ Never dive the Aladin® Sport to the limit. Neither the Aladin® Sport, nor any other diving computer or decompression table should be pushed to its limit. Give yourself a margin of safety by always leaving at least a few minutes in the "no-stop" box before making your ascent. ­ Avoid repeated ascents and descents (yo-yo diving) while using the Aladin® Sport. Operating Manual Aladin® Sport F LIST OF CHAPTERS I II III IV V VI VII INTRODUCTION ALADIN® SPORT ­ SURVEY DIVING WITH ALADIN® SPORT DIVING AT REDUCED RISK WITH ALADIN® SPORT LOGBOOK DIVE PLANNER INTERFACE 1I 9 II 23 III 39 IV 49 V 55 VI 63 VII 65 VIII VIII TROUBLE SHOOTING IX APPENDIX, Maintenance, Technical Information, Warranty 69 IX I INTRODUCTION 1. Aladin® Sport - Safe No-Stop Diving 2. Aladin® Sport ­ Your Personal Companion 3. The Calculation Model ZH-L8 ADT ______________________________________ 2 ______________________________________ 3 3.1 Description _________________________ 5 3.2 Advantages ________________________ 7 ______________________________________ 8 I 4. Safety in Diving I Introduction 1 1. Aladin® Sport - Safe No-Stop Diving The proven no-stop dive computer Aladin is furnished with a new, revolutionary calculation model which makes it even safer and more comfortable. The Aladin of the new generation is called Aladin® Sport and completes the Aladin family consisting of the Aladin® Air X Nitrox integrating air data and the decompression computer Aladin® Pro. The Aladin® Sport is designed for no-stop diving, but also provides the necessary information for safe diving in case of a decompression dive. Aladin® Sport displays all information necessary for safe diving in such a manner that it is easy to survey and to be understood at once. Read this operating manual carefully and to the last page. The convincingly simple handling and the high comfort of carrying speak for themselves from the first dive. The Aladin® Sport of the new generation brings you in possession of a device that guarantees more safety, quality and comfort in diving. 2 I Introduction 2. Aladin® Sport - Your Personal Companion I Aladin ® Sport considers your individual reactions during the dive, the cooling of your skin and includes your workload by a constant value in the calculations. The latest results of medical and technical research were taken into consideration. As a special feature the calculation model also considers the formation of micro-bubbles in the venous circulation depending on workload and skin temperature. This has led to the development of a unique, adaptive calculation model. Aladin® Sport was exclusively designed for diving with compressed air and especially for diving in the nostop range. It distinguishes itself from its previous models and other commercial diving computers in a number of significant ways. · The ZH-L8 ADT decompression calculation model considers eight body tissues as well as the diver`s conduct and the ambient conditions. This allows for an even more precise calculation of a modeled risk for decompression sickness which can lead to greater diving safety. I Introduction · Compared to all previous models the Aladin® Sport is much more of a personal instrument, which considers the individual conduct of the diver. Different conducts of diving buddies can lead to distinctive differences in the display of the no-stop and decompression information, since risk situations (violations of the diving rules) may have a strong influence by the anticipation of physiological processes. On the other hand, Aladin® Sport "rewards" a diving conduct following the rules with highest diving comfort. · The diver`s workload is incorporated in the decompression calculations as a constant value. The new calculation model considers for the calculation of the surface intervals and the decompression information for repetitive dives that the physical performance at the surface is smaller than during the dive. · The Aladin® Sport uses optical alarms in risk situations or dangerous conduct. 3 2. Aladin® Sport - Your Personal Companion · Aladin® Sport is designed to be carried on the diver`s wrist or built in consoles. Ease handling, easy to watch and unambiguous arrangement of the data in the display, increase of diving safety without the loss of diving comfort and the possibility of transferring data to a personal computer are the main features of the Aladin® Sport comfort. WARNING You must strictly observe all optical alarms due to risk situations or dangerous conduct and take appropriate action based upon those alarms to avoid serious injury or death from decompression sickness! · By using the Aladin® Sport`s logbook, a diver may directly call up information from the last 19 dives. When interfaced with a personal computer, 37 dives and 200 minutes of dive profile in intervals of 20 seconds can be read out. · The dive planner allows the advance planning of no stop dives with readily determinable surface intervals. 4 I Introduction 3. The Calculation Model ZH-L8 ADT I 3.1 Description The Aladin ® Sport uses a new decompression calculation model known as the ZH-L8 ADT. This model uses eight compartments or "tissue" groups with nominal half time periods from 5 to 640 minutes. This model differs considerably from other models by its consideration of the following additional physiological processes: 1. Blood perfusion to the body`s organs is not constant. Skin and muscle tissues are especially subject to changes in blood perfusion, depending on temperature and work load. Changes in blood perfusion to these organs change their nitrogen saturation tolerance. The model used by the Aladin® Sport takes these effects into account and thus the "skin" and "muscle" compartments in the Aladin® Sport show variable half-time periods and saturation tolerances. Decompression information is calculated according to the workload and decrease in skin temperature. I Introduction The decrease in skin temperature is based upon the water temperature and the dive time. By considering these changes in saturation, the time that must be spent at the surface prior to flying can be considerably lengthened, depending upon the depth, time, and temperature of a dive, as well as the diver`s work during that dive. 5 3. The Calculation Model ZH-L8 ADT 2. The decompression model used by the Aladin® Sport considers nitrogen in both its dissolved as well as its gaseous phase (microbubbles). Formation of microbubbles is considered to be a strong indicator of a high risk of decompression sickness. The Aladin® Sport model calculates the formation of microbubbels depending on various assumed influences in arterial and venous blood. In normal, slow ascents, microbubbles form mainly in venous blood. During fast ascents, microbubbles may also form in arterial blood and in the body`s tissues as well. If a particular dive profile may result in the creation of microbubbles according to the Aladin® Sport`s model, decreased bottom time and/or increased decompression times as well as increased "no fly" time will be indicated. · Microbubbles can form if the diver makes too fast an ascent ...