SAVANT ™ owner's guide
RESPONSIBLE COMPUTER DIVING • Always Plan Each Dive • Always Limit Your Dive to the Level of Your Training and Experience • Always Make Your Deepest Dive First • Always Make The Deepest Part of Every Dive First • Check Your Computer Often During the Dive • Do A Safety Stop on Every Dive • Allow Adequate Surface Interval Between Each Dive • Allow Adequate Surface Interval Between Each Day of Diving (12 Hours or Until Your Computer Clears) Read And Understand This Owner's Guide Thoroughly Before Using the SAV
SAVANT Pay special attention to items marked with this Warning symbol. WARNINGS: • The SAVANT is intended for use by recreational divers who have successfully completed a nationally recognized course in scuba diving, and diving with enriched nitrogen-oxygen (nitrox) mixtures. • It is intended only for no decompression diving, NOT intentional decompression diving.
LIMITED TWO-YEAR WARRANTY For details, refer to the Product Warranty Registration Card provided. COPYRIGHT NOTICE This owner’s guide is copyrighted, all rights are reserved. It may not, in whole or in part, be copied, photocopied, reproduced, translated, or reduced to any electronic medium or machine readable form without prior consent in writing from AERIS / 2002 Design. SAVANT Owner's Guide, Doc. No. 12-7020 © 2002 Design 1998 2002 Davis Street San Leandro, Ca.
SAVANT CONTENTS FEATURES AND DISPLAYS ................................................................1 Introduction ................................................................................................................. 2 Control Buttons ........................................................................................................... 3 Nitrogen Bar Graph ..................................................................................................... 3 Oxygen (O2) Bar Graph .......
CONTENTS (continued) Entering Settings ....................................................................................................... 11 Set FO2 Default .................................................................................................... 12 Set Audible Alarm .................................................................................................. 12 Set Units of Measure .............................................................................................
SAVANT CONTENTS (continued) Time to Fly and Desaturate ....................................................................................... 25 Dive Planner .............................................................................................................. 26 Dive Log Mode .......................................................................................................... 27 External Access Mode ..............................................................................................
CONTENTS (continued) CARE AND MAINTENANCE ..............................................................43 Care and Cleaning .................................................................................................... 44 Annual Inspections and Service ................................................................................ 45 Battery Life ................................................................................................................ 46 Low Battery Condition .................
SAVANT FEATURES and DISPLAYS 1
Welcome to AERIS and thank you for choosing the SAVANT! Your SAVANT presents the information that you need before, during, and after your air (or nitrox) dives using an intuitive combination of easy to read displays and identification icons. This instructional guide is intended to help you become familiar with the functions and features available and show you examples of displays that you could expect to see in the various operational modes. Relax and read through the complete owner's guide.
SAVANT The control buttons allow you to select display options and access specific information. The Upper is named Advance (1a) and the Lower Select (1b). They can be pressed repeatedly, or held in to scroll and continue as you set or access different display modes. Each numeric and graphic display represents a unique piece of information. It is imperative that you understand the formats, ranges, and values of the information represented to avoid any possible misunderstanding that could result in error.
Segments = Speed (rate) 0 = 0 - 20 fpm (0 - 6 mpm) 1 = 21 - 30 fpm (6.5 - 9 mpm) 2 = 31 - 40 fpm (9.5 - 12 mpm) 3 = 41 - 50 fpm (12.5 - 15 mpm) 4 = 51 - 60 fpm (15.5 - 18 mpm) 5 = 61+ fpm (18.5+ mpm) (when 5, all will flash) a b The Oxygen (O2) Bar Graph (2a) represents oxygen loading, your relative oxygen tolerance dosage (OTU), showing the maximum of either per dive accumulated oxygen, or 24 hour period accumulated oxygen.
SAVANT During a dive, the Current Depth display (3a), indicates depths from 0 to 330 feet (99.5 meters) in 1 foot (.5 meter) increments. A second depth display (Fig. 7b) indicates the Maximum Depth reached during that dive. If you descend deeper than 330 feet (99.5 meters), the displays will show the letters (oor) to indicate that you have gone 'out of range'. During a Decompression Dive, the required Ceiling Stop Depth replaces Maximum Depth (3b).
Dive Time Available, Dive Time Remaining, Decompression Stop Time, Total Ascent Time required, Time to Fly, and Time to Desaturate, are calculated projections of time and use a solid (non-blinking) colon to indicate that they are counting down, rather than up. In the Surface mode, Temperature appears continuously (4a). During a dive, Temperature is displayed in place of Maximum Depth and Elapsed Dive Time when the Advance (Upper) control button is depressed, and for 3 seconds after it is released.
SAVANT One Beep per Second (Immediate Danger) • Ascent to a depth shallower than a required stop depth. • Ascent rate that exceeds 60 ft/min (18 m/min). • Partial pressure of oxygen equal to or greater than 1.60 ATA. • Oxygen accumulation greater than the allowed per dive or 24 hour limit. Single Long Beep (Permanent Violation) • Depth was shallower than a required stop depth for more than 5 minutes. • Required Decompression exceeds a 60 FT/ 18 M ceiling.
The SAVANT will operate in almost any temperature diving environment in the world between - 40 °F and 140 °F (- 10 and 60 °C). At extremely low temperatures, the LCD may become sluggish, but this will not affect it's accuracy. If stored or transported in extremely low temperature areas (below freezing), you should warm the module and its batteries with body heat before diving. WARNING: Never participate in sharing or swapping of a dive computer. Doing so may result in injury or death.
SAVANT ACTIVATION and SETUP 9
WARNING: Never attempt to activate the SAVANT underwater. This may result in inaccurate depth and no-decompression time displays. If the unit is activated when deeper than 4 feet (1 meter) underwater, or at elevations higher than 14,000 feet (4,267 meters), it will perform a diagnostic check followed by immediate shutdown. Always check the display before entering the water to ensure that it is activated!! To activate the unit, press the Select (Lower) button once and release.
SAVANT Surface Mode, identified by the Surface Time icon (7a), follows Diagnostic Mode after activation. Information includes Dive Number '0' (no dive made yet), Surface Time with flashing colon, and Temperature.. a If battery voltage is low, the Battery icon will be on, flashing (8a) and the unit will shut off. WARNING: If a Low Battery condition is indicated following diagnostics, AERIS strongly recommends that you DO NOT attempt to dive until the battery is replaced. OXYGEN NITROGEN Fig.
The Advance (Upper) button is used to move to the available settings, and the Select (Lower) button is used to choose the desired setting. If no buttons are pressed within 2 minutes, the unit will revert to Surface Mode. OXYGEN NITROGEN Fig. 9 OXYGEN NITROGEN Fig. 10 FT OXYGEN NITROGEN FT Fig. 11 12 Set FO2 (50%) Default - on/off (9) - effect explained on pages 16 and 17. • Factory set for Default 'On'.
SAVANT Set Date/Time • Factory set for January 1, 1997, 12:00 AM (midnight). To change: • press both buttons simultaneously while in Surface Mode. • press the Advance (Upper) button 4 times to access the Date/Time Mode. The DATE screen will appear (12) with the Year 'flashing'. Hint: To bypass a display that is flashing, do not press the Select (Lower) button, instead press the Advance (Upper) button to view the next function.
FT OXYGEN NITROGEN Fig. 14 Set Dive Profile Sampling Rate (14) This setting allows you to select the rate that the unit samples data points for onboard storage and subsequent download to the Dive Downloader (DDA) PC software program. It does not affect the rate that data is sampled for 'display' during operation. Lower rates use more memory storage, so less dives can be stored (expect only 8 profiles for 2FT setting, yet 36 for 10 FT setting). • Factory set for 10 FT (3 M).
SAVANT PRE DIVE and DIVE MODES 15
WARNING: The percentage of oxygen (FO2) in the nitrox mix being used must be set 'before each' nitrox dive, unless the FO2 default feature has been turned 'off'. FT OXYGEN NITROGEN The SAVANT can be used either as an Air computer or as a Nitrox computer. After activation, it will operate as an Air computer without displaying information associated with oxygen calculations, unless it is set for a percentage of oxygen (FO2) other than Air (numerical value between 21 and 50 %).
SAVANT • 50%, if the FO2 default is 'On' (18a), or • it will remain at the previous value set, if the FO2 default is turned 'Off'. If the FO2 default is 'On', the FO2 value must be reset for each repetitive nitrox dive, or the value will automatically be 50 and the dives will be calculated based on 50% O2 for oxygen calculations and 21% O2 (79% nitrogen) for nitrogen calculations.
AERIS strongly recommends that you review the Dive Planner prior to every dive to help you plan your dive as required to avoid exceeding no decompression or oxygen exposure limits. This is especially important for repetitive dives, when the Planner indicates no decompression bottom times (20a) that are available on your next dive, based on any residual nitrogen accumulation following your last dive and surface interval. WARNING: The Dive Planner predicts only no decompression times for subsequent dives.
SAVANT To access the Dive Planner while in the Surface mode: • press the Advance (Upper) button 3 times. • press and hold the Select (Lower) button to view a sequence of depths from 30 to 160 feet (9 to 48 meters) in 10 foot (3 meter) increments, or • press and release the button repetitively to view the information one increment at a time. • to revert to the Surface mode, press the Advance (Upper) button. FT NITROGEN Fig.
FT OXYGEN NITROGEN FT MAX Fig. 24 a FT OXYGEN NITROGEN Once activated, the SAVANT will enter the No Decompression Dive Mode (24) when you descend deeper than 5 feet (1.5 meters). Information includes Current Depth, Elapsed Dive Time (and icon), Dive Time Remaining (and Mode icon), Maximum Depth for that dive (and icon), and the bar graphs. As your depth and elapsed dive time increase, the Nitrogen Bar Graph will fill with segments (green toward red) to represent nitrogen loading.
SAVANT To activate the backlight, press the Select (Lower) button. The displays will be illuminated for 5 seconds. Release and press again as desired. To view Temperature (26a), press the Advance (Upper) button. It will replace Max Depth and Elapsed Dive Time for depression time plus 3 seconds. A safety stop made between 15-20 feet (5-6.5 meters) is strongly recommended as a standard procedure before completing your ascent.
SUMMARY OF ACCESS TO PRE DIVE AND DIVE MODES To access a specific Pre Dive mode (no dive made) from the Surface Mode, press the button(s) as follows: MODES Backlight Time/Date FO2 set Dive Planner Log Mode Set Mode TO ACCESS Lower '1' time Upper '1' time Upper '2' times Upper'3' times Upper '4' times Both '1' time TO SET/VIEW Lower 'repetitively', or press and hold (to change) Lower 'repetitively', or press and hold (to change) Lower 'repetitively', or press and hold (to change) See below • FO2 Default
SAVANT POST DIVE MODES 23
When you ascend to 3 feet (1 meter) or shallower, the SAVANT will enter Surface Mode (27) and begin counting your surface interval (27a). The first 10 minutes is, in affect, a Transition Period. Information includes Surface Mode icon (flashing), dive 'number', Surface Interval (colon flashing), Temperature, Nitrogen and O2 Bar Graphs. During the 10 minutes • To activate the backlight, press the Select (Lower) button. • To view the Date/Time for 5 seconds, press the Advance (Upper) button.
SAVANT Remember!! You must ensure that the FO2 setting matches the specific nitrox mix being used for each nitrox dive. To verify, or change, the FO2 setting (28) while in the Surface Mode: • press the Advance (Upper) button 2 times. • press the Select (Lower) button to change the setting. If FO2 was set for a numerical value, the Maximum Depth that can be achieved with an oxygen partial pressure of 1.60 ATA for the FO2 value set will be displayed with the letters 'PO2' in the lower screen.
10 minutes after surfacing at 9:59 (hr:min) maximum and counts down to 0:00. If the time for desaturation is calculated to be greater than 9:59, the display will indicate 9:+ until it decreases to 9:59. Two hours after the last dive, the Time to Fly and Desaturation countdowns will be displayed continuously, counting down to 0:00. Access to other modes is gained by pressing the Select (Lower) button to return to Surface Mode.
SAVANT Two hours after the dive, while the Time to Fly and Desaturation countdowns are displayed continuously, access is gained by first pressing the Select (Lower) button to return to Surface Mode. Information from your 12 latest dives is stored in the Log for viewing. After 12 dives are accumulated, each subsequent dive will overwrite the oldest dive in the log (i.e., the most recent dive deletes the oldest).
OXYGEN NITROGEN FT MAX • press the Select (Lower) button 1 time to view the Nitrogen Log (32) • Log Mode icon • Dive Number • Maximum Depth reached (and icon) • Elapsed Dive Time (and icon) • Surface Interval prior to that dive (and icon) • Ascent Rate Indicator - showing the maximum vertical speed • Nitrogen Bar Graph - showing tissue nitrogen loading at the time you surfaced at the end of the dive.
SAVANT are displayed continuously, access is gained by first pressing the Select (Lower) button to return to Surface Mode. To exit Log Mode at any time press the Advance (Upper) button. Using infrared linking hardware and a PC software program, dive data can be downloaded (copied) from your SAVANT into an IBM compatible PC program running on a Windows® 95 or 98 operating system. Instructions are provided with the download package that is available from your Authorized AERIS Dealer.
SUMMARY OF ACCESS TO POST DIVE MODES During the first 2 hours after a dive* (after the 10 minute Transition Period has ended), press the button(s) as follows: MODES TO ACCESS TO SET/VIEW Backlight Lower '1' time Time/Date Upper '1' time FO2 set Upper '2' times Fly/Desaturate Upper '3' times Dive Planner Upper '4' times Lower (hold or repetitive) Log Mode Upper '5' times Lower (hold or repetitive) Set Mode Both '1' time Refer to page 22 of this Guide EA Mode Both '1' time, Upper '3' time
SAVANT HANDLING EXTREMES 31
The SAVANT is intended for use by recreational divers not engaged in intentional decompression diving. Decompression features are provided only for emergency situations. By entering decompression, you automatically impose a “ceiling” above you which you cannot immediately ascend beyond, denying you free access to the surface. The SAVANT is not intended for use by military or commercial divers.
SAVANT The SAVANT cannot provide you with a backup breathing gas supply for emergencies or the ascent line you will need, and decompression diving greatly increases your risk of decompression sickness. WARNING: Existing data for making planned decompression dives is extremely limited, and virtually nonexistent for repetitive decompression diving.
Limits. The yellow Caution zone of the Nitrogen Bar Graph (37a) offers you a convenient way to monitor how close you are to the No Decompression Limit. AERIS suggests always leaving the water with the Nitrogen Bar Graph in the green No Decompression zone. WARNING: Never exit the water with the Nitrogen Bar Graph in the red Decompression zone. Doing so greatly increases the risk of decompression sickness, and may result in injury or death. Body metabolism varies from person to person, and from day to day.
SAVANT a continuously (38a). The O2 bar graph and Ascent Rate Indicator will continue to represent their respective information. By pressing the Advance (Upper) button, an Alternate Display will appear showing Maximum Depth (and icon) and Elapsed Dive Time (and icon) in the lower screen (39) for button depression time plus 3 seconds. The amount of decompression credit time is dependent on depth, with slightly less credit given the deeper you are.
a Flashing FT OXYGEN NITROGEN FT b Fig. 40 Flashing FT The unit will enter the Conditional Violation Mode if you ascend shallower (40a) than the required decompression ceiling indicated (40b). A momentary rise above the ceiling, such as with a surge or swell, could cause this to happen. The SAVANT will beep once per second and the Total Ascent Time display will flash until you descend below the required decompression ceiling stop depth.
SAVANT Flashing 2. Decompression requires a ceiling stop depth between 60 feet (18 meters) and 70 feet/21 meters (42). You must safely ascend to just deeper than 60 feet (18 meters) staying as close to 60 feet (18 meters) as possible without causing the Total Ascent Time (42a) to flash, until the ceiling stop depth indicates 50 FT/ 15 M. 3. Descending to deeper than 330 feet/99.5 meters (43).
Flashing FT OXYGEN NITROGEN FT MAX Fig. 44 a OXYGEN NITROGEN Fig. 45 38 Immediate Violation Mode occurs when a Decompression Stop depth much greater than 60FT (18M) is required. The unit will emit a Single Long Beep and then operate with limited functions (Current Depth, Max Depth, and Elapsed Dive Time) in Gauge Mode (44) during the remainder of that dive and for 24 hours after surfacing.
SAVANT Entering the Immediate Violation Mode, then Gauge Mode, will result in loss of all decompression and oxygen monitoring functions for 24 hours after that dive. This is considered a Permanent Violation. WARNING: AERIS does not advocate diving to depths below the maximum recommended sport diving depth limit of 130 feet (39 meters). Any deeper dive, the basis for which is purely theoretical, should be avoided. Special training, equipment, and support are necessary for this type of diving.
WARNING: The oxygen features of the SAVANT are intended for use only by recreational divers trained for nitrox diving by an instructor certified by a recognized training agency to teach diving with nitrox. By making a nitrox dive without the necessary training, preparation, and equipment, you will have placed yourself in an unnecessarily dangerous situation. The unit is a sophisticated instrument designed with capabilities that go beyond the range of recreational diving with compressed air.
SAVANT play will remain on the screen until PO2 decreases below a 1.40 ATA. Flashing When PO2 reaches the maximum allowed limit of 1.60 ATA, the unit emits 1 beep per second and the red segment of the O2 bar graph, PO2 value, and PO2 symbol flash as a warning (48) until PO2 decreases below 1.60 ATA. If you continue the dive at your current depth, or descend deeper, your exposure to CNS oxygen toxicity will increase.
Flashing FT OXYGEN NITROGEN FT MAX Fig. 50 If accumulation exceeds the limit of oxygen tolerance (Oxygen Dive Time Remaining is 0:00), the O2 Bar Graph will enter the red Danger zone and flash as a warning (50) and the SAVANT will emit one beep per second until it enters the Surface Mode. You must then focus on making a safe controlled ascent to the surface to prevent further exposure.
SAVANT CARE and MAINTENANCE 43
The SAVANT is a sensitive electronic instrument. Although it has been designed to withstand the rigors of diving, it still must be handled carefully to protect from shock, excessive heat, chemical attack, and tampering. The housing is made of an impact resistant resin that is extremely shock resistant but is susceptible to chemical attack and scratches. CAUTION: Never spray aerosols of any kind on, or near, the instrument. The propellants may chemically attack the plastic.
SAVANT The SAVANT should be inspected annually by an Authorized AERIS Dealer who will perform a factory prescribed function check and inspection for damage or wear. To keep the 2 year limited warranty in effect, this inspection must be completed one year after purchase (+/- 30 days). AERIS recommends that you continue to have this inspection performed every year to ensure it is working properly. The costs of annual inspections are not covered under the terms of the 2 year limited warranty.
'Average' # Dives Each Period Total # Dives To Expect 1 50 2 100 3 150 a The unit's battery consumption rate varies throughout periods of operation, that begin upon activation and continue for 24 hours after surfacing from a dive. The exact number of dives, or hours of operation, that you will obtain with a battery is subject to variables such as, the number of dives conducted during an operational period, the manufacturer, model and age of the batteries actually used, and use of the backlight.
SAVANT is sensed while Fly Mode is being displayed continuously, starting 2 hours after surfacing, the icon will appear with the Fly countdown. If a low battery condition occurs during the dive, there will be sufficient voltage to maintain unit operation for the remainder of that dive and the icon will appear 10 minutes after surfacing from the dive. AERIS strongly advises that you replace the battery and DO NOT attempt to dive with the SAVANT 'any time' the Low Battery icon appears on the display.
• • • • Battery Hatch O-ring (a) b Battery Hatch Hatch O-ring Sealing Surface (c) (Inner Side) a b Side View Fig. 54 48 Lift the hatch up and out of the housing. Remove the battery and battery hatch o-ring. DO NOT use tools. O-ring replacement is highly recommended to ensure proper sealing. Closely check the battery hatch and the housing for any signs of damage that might impair proper sealing and for any signs of corrosion indicating entrance of moisture into the unit.
SAVANT CAUTION: The o-ring must be aligned as indicated to prevent leakage and possible malfunction. Battery Hatch with O-ring • Place the new 3.6 volt TADIRAN® 1/2AA lithium battery, model TL-2150, or equivalent, into the battery compartment ensuring proper orientation positive (+) toward the clip (55e) and negative (-) toward the spring (55f). • Carefully place the battery hatch with o-ring into position ensuring that the o-ring stays in place, is aligned, and seals properly.
• Check the battery hatch o-ring seating surfaces for damage (nicks, cuts, divots, etc.). If found, DO NOT use. Return the unit to AERIS. • Flush the battery hatch and compartment with a solution of 50% white vinegar and 50% water. Rinse with fresh water, and allow to dry overnight, or blow dry with a hair dryer (set at 'no heat'). Ensure there is no moisture around the inside base of the battery compartment and hatch. • Install the o-ring and battery as previously described.
SAVANT REFERENCE 51
In 1990 the Undersea and Hyperbaric Medical Society (UHMS) published a set of guidelines aimed at minimizing the possibility of decompression sickness due to flying too soon after diving. The UHMS suggests* divers using standard air cylinders and exhibiting no symptoms of decompression sickness wait 24 hours after their last dive to fly in aircraft with cabin pressures up to 8,000 feet. (2,440 meters).
SAVANT To reduce the risk of developing decompression sickness after a single no decompression dive, current guidelines suggest waiting 12 hours prior to exposure to atmospheric pressures equivalent to 1,000 feet (330 meters) above sea level, or greater. When repetitive dives are conducted during the same day, or period of days, it is suggested that the interval be increased to a minimum of 24 hours. Note that land travel to higher elevations after diving must also be considered as an exposure to altitude.
WARNING: Altitude compensation provided by the SAVANT takes place when the unit is activated. DO NOT dive at any different altitude until the unit shuts off. It will recalibrate automatically when reactivated at the new altitude. Both central nervous system (CNS) oxygen toxicity and pulmonary oxygen toxicity were taken into consideration when the current maximum limits for exposure to oxygen (Fig. 56) were published by NOAA in the October 1991 NOAA Diving Manual.
SAVANT Display Seen by the Diver CO DE 13 Fig. 56 - Oxygen Exposure Limits CO DE DE . NO C.Z 40 O . CO NO C.Z CO CO 11 DE CO C DE CO 80 . C.Z NO 10 DE DE 120 . DE DE C.Z NO 9 160 O . NO C.Z CO etc. DE CO C DE etc. CO DE . C.Z CO DE 720 570 450 360 300 270 240 210 180 180 150 20 NO 720 570 450 360 300 240 210 180 150 120 45 . C.Z CO 12 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40 1.50 1.
At any particular point, one tissue compartment may be absorbing nitrogen, while another that was previously higher may be off-gassing. Figure 58 illustrates the point at which one compartment “hands over” control to another compartment at a different depth. This feature of the Decompression Model is the basis of multilevel diving, one of the most important contributions the SAVANT offers you. Take advantage of this feature and make all of your dives multilevel dives.
SAVANT Display Seen by the Diver No. of Segments Tissue Half-Time CO DE . Z C. v CO CO 12 DE 12v CO 20 40 NO CO DE NO DE Z C. 12^ NO . CO DE DE . Z C. Fig. 58 - Control Hand-over Depth feet (meters) SAVANT NDL-mins. Eng (Metric) U.S. Navy NDL -mins.
SPECIFICATIONS NO DECOMPRESSION MODEL OPERATIONAL MODES Basis: • Modified Haldanean Algorithm • 12 tissue compartments • • • • • • Data Base: • Diving Science and Technology (DSAT) - Rogers/Powell Performance: • Tissue compartment halftimes (in mins.
SAVANT SPECIFICATIONS (continued) DISPLAY RANGE/RESOLUTION Numeric Displays: • Dive Number • Depth • Maximum Depth • FO2 Set Point • PO2 Value • Dive Time Remaining • Total Ascent Time • Decompression Stop Time • Elapsed Dive Time • Surface Time • Dive Log Surface Interval • Time to Fly • Time to Desaturate Range: Resolution: 0-9 1 0 - 330 ft (0 - 99.5 m) 1 ft (.5 m) 330 ft (99.5 m) 1 ft (.5 m) 21 - 50 % 1% 1.40 - 5.00 ATA .01 ATA 0 - 9 hr. 59 min. 1 minute 0 - 9 hr. 59 min. 1 minute 0 - 99 min.
SPECIFICATIONS (continued) OPERATIONAL PERFORMANCE (continued) ACCESSORIES Altitude: • Operational from sea level to 14,000 feet (4,267 meters) elevation • Recalibration of depth readings from 'feet of sea water' to 'feet of fresh water' when higher than 2,000 feet (610 meters) elevation Optional items available from your Authorized AERIS Dealer: • P/N 10.
SAVANT GLOSSARY Air Dive - A dive conducted using air (approximately 21% oxygen & 79% nitrogen) as the breathing gas. Algorithm - A step-by-step mathematical formula designed to accomplish a particular result (i.e. Dive Time Remaining in the SAVANT). Altitude Dive - A dive made at an elevation above sea level (2,000+ ft. / 610+ m.) where a different set of no decompression tables is used . Ascent Rate - The speed that a diver ascends toward the surface.
GLOSSARY (continued) Decompression Stop - The depth(s) at which a diver must pause during ascent to allow absorbed nitrogen to escape naturally from the tissues. Depth Sensor - an electro-mechanical device that converts water pressure into an electrical signal, that is converted to a visual depth display. Diagnostic Mode - The first display seen on dive computers after initial activation during which time a self–check for internal faults is performed. Display - A visual readout of information.
SAVANT GLOSSARY (continued) Nitrox - A nitrogen-oxygen breathing gas mixture that contains a higher fraction of oxygen than air. Nitrox Dive - A dive conducted using nitrox (22 to 50 % O2) as the breathing gas. NOAA - Abbreviation for National Oceanic and Atmospheric Administration. No Deco - Abbreviation for No Decompression. No Deco Time Remaining - The amount of dive time remaining based on no-decompression status.
RESPONSIBLE COMPUTER DIVING Since the advent of dive computers, it is a common mistake to assume that the old traditional rules of diving no longer apply, but the truth is just the opposite. Keep these basic rules in mind: • Plan each dive, and dive your plan - Your computer was not designed to make decisions for you, only to provide you with the information you need to make responsible decisions for yourself. This begins with a dive plan that will help you avoid a low air or decompression situation.
SAVANT While No Decompression diving, if you find that any major piece of equipment is not functioning correctly, you must abort the dive immediately and surface slowly in a controlled manner. If your SAVANT stops working for any reason, it is important that you have anticipated this possibility and are prepared for it. This is an important reason to avoid pushing the No Decompression and Oxygen Tolerance Limits, and a critical reason to avoid entering decompression.
SERVICE RECORD RESPONSIBLE DIVING BEGINS WITH • DIVING WITHIN THE LIMITS OF MY ABILITY AND TRAINING • EVALUATING THE CONDITIONS BEFORE EVERY DIVE AND MAKING SURE THEY FIT MY PERSONAL CAPABILITIES • BEING FAMILIAR WITH AND CHECKING MY EQUIPMENT BEFORE AND DURING EVERY DIVE • KNOWING MY BUDDY'S ABILITY LEVEL AS WELL AS MY OWN • ACCEPTING THE RESPONSIBILITY FOR MY OWN SAFETY ON EVERY DIVE 66 RESP Date of purchase ______________ AS A RESPONSIBLE DIVER I UNDERSTAND AND ASSUME THE RISKS I MAY ENCOUNTER WHILE
SAVANT a. b. c. d. e. f. g. h. i. j. k. l.
© 2002 Design 1998 Doc. No.
