ATMOS 2 DIVE COMPUTER OPERATING MANUAL
LIMITED TWO-YEAR WARRANTY For details, refer to the Product Warranty Registration Card provided. COPYRIGHT NOTICE This operating manual 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. ATMOS 2 Operating Manual, Doc. No. 12-7129 © 2002 Design, 2001 San Leandro, Ca.
CONTENTS WARRANTY ................................................................................................................................................................. 2 NOTICES ..................................................................................................................................................................... 2 DECOMPRESSION MODEL ......................................................................................................................................
CONTENTS (continued) PRE DIVE PLAN MODE ................................................................................................. 43 DIVE PLANNER ......................................................................................................................................................... 44 DIVE MODES .................................................................................................................. 47 DIVE MODE BAR GRAPHS .................................................
CONTENTS (continued) GENERAL ....................................................................................................................... 81 CARE AND CLEANING ............................................................................................................................................. 82 INSPECTIONS AND SERVICE ................................................................................................................................. 83 BATTERY REPLACEMENT ....................
LCD LAYOUT r l k j i m c h n b d g a o f q 6 p e Components: a. Nitrogen Loading Bar Graph b. Oxygen Accumulation Bar Graph c. Variable Ascent Rate Indicator d. Select (Side) Button e. Advance (Front) Button f. Graphic - Maximum Depth g. Battery Consumption Indicator h. Icon - Alarm i. Icon - O2 (oxygen) j. Icon - Log Mode k. Graphic - Demo Mode l. Graphic - Depth m. Graphic - Ascent Too Fast n. Icon - Operating Mode o. Icon - Time p.
WARNING: Prior to diving with the Atmos 2, you must also read and understand the AERIS Dive Computer Safety & Reference Manual, Doc. No. 12-7203, which provides Important Warnings and Safety Recommendations as well as general product information.
WELCOME TO AERIS ! AND THANK YOU FOR CHOOSING THE ATMOS 2 ! Your ATMOS 2 presents the information that you need before, during, and after your air (or nitrox) dives using a combination of easy to read displays and identification icons. It can also be set to operate simply as a digital depth gauge/timer. 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.
CONTROL BUTTONS The two Control Buttons allow you to select display options, access specific information when you want to see it, and activate the Backlight. The Front button is named Advance (Fig. 1a) and the Side button Select (Fig. 1b). BAR GRAPHS Nitrogen Bar Graph The Nitrogen Bar Graph (Fig. 1c) represents tissue loading of nitrogen, showing your relative No Decompression or Decompression status.
a b Fig. 2 - O2BG & VARI Deeper than 60 feet (18 m) Segments Ascent Rate = Displayed FPM MPM 0 0-20 0-6 1 21-30 6.5-9 2 31-40 9.5-12 3 41-50 12.5-15 4 51-60 15.5-18 5 >60 >18 60 feet (18 m) & Shallower Segments Ascent Rate = Displayed FPM MPM 0 0-10 0-3 1 11-15 3.5-4.5 2 16-20 5-6 3 21-25 6.5-7.5 4 26-30 8-9 5 >30 >9 Variable Ascent Rate Indicator 10 Oxygen (O2) Accumulation Bar Graph The O2 Bar Graph (Fig.
INFORMATIONAL DISPLAYS 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. Depth Displays During a dive, the Current Depth display (Fig. 3a), indicates depths from 0 to 330 feet (99.9 meters) in 1 foot (.1 meter) increments.
Due to the importance of the information it presents, the Main Time display (Fig. 4a) is configured with the largest segments of the LCD. A second time display (Fig. 4b) is located in the lower window. Both displays are identified by a clock icon. a Time of Day can be set for 12 hour format (Am/Pm) or 24 hour format. b Fig. 4 - Time Displays Date is displayed in the lower screen only to identify dive data while it is viewed in the Log Mode.
AUDIBLE ALARM When warning situations activate the Alarm, the unit will emit a continuous tone for 30 seconds, or until the situation is corrected, or it is acknowledged by pressing the Advance (Front) button for 2 seconds. If acknowledged by the user and the situation corrected, the Alarm will sound again upon reentry into the warning situation, or entry into another type of warning situation.
LED WARNING INDICATOR The red LED Warning Light located on the upper portion of the module (Fig. 6) is synchronized with the Audible Alarm and will indicate an Alarm when the unit emits a tone. The LED will be OFF when the Alarm is acknowledged, or Set OFF (a user setting). BACKLIGHT To activate the Backlight while in the Surface Mode or during a dive press the Select (Side) button. The screens will be illuminated for button depression time plus 0, 3, or 7 seconds (a user setting).
POWER SUPPLY The ATMOS 2 utilizes one (1) type CR 2450 Lithium 3 volt cell that should provide approximately 300 hours of continuous, or 50 activation periods, of operation. If you conduct 1 dive each time the unit is activated, you should obtain approximately 50 dives. If you conduct 3 dives each time the unit is activated, you should obtain approximately 150 dives. Battery Indicator A Battery Indicator provides an indication of battery condition.
Low Battery Condition Voltage level is checked upon activation and every 10 minutes during operation. If a Low Battery Condition exists when the unit is activated (by pressing the button), the Battery icon will appear flashing once per second for 5 seconds (Fig. 8) followed by shutdown of the unit. If the button is not pressed to activate the unit prior to a dive, and a Low Battery Condition exists, the Low Battery icon will appear flashing as a warning upon descent past 4 feet (1.2 meters).
FO2 MODE After Activation, the ATMOS 2 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 %). NOTE: Setting FO2 is described on Page 25. When set with an FO2 value of 'Air' (Fig. 9), the ATMOS 2 will perform calculations the same as if FO2 were set for 21% oxygen, internally accounting for oxygen loading for any subsequent Nitrox dives.
WARNING: The percentage of oxygen (FO2) in the nitrox mix being used must be set 'before each' nitrox dive, unless the FO2 50% Default feature has been turned OFF. FO2 50% Default Fig. 11 - FO2 Default ON If the Default is set to ON and FO2 is set to a value 'greater than 21%', the FO2 set point value will automatically revert to 50% 10 minutes after that dive (Fig. 11). The Maximum Depth that can be achieved with a PO2 of 1.60 ATA will also be displayed.
DIVE TIME REMAINING One of the most important pieces of information on Aeris dive computers is the 'Dive Time Remaining numeric display'. The dive computer constantly monitors no decompression status and oxygen exposure. The Dive Time Remaining* display will indicate the time that is more critical for you at that particular moment (i.e.; whichever time is the least amount available). The specific time being displayed is identified by the No Decompression Dive Time icon, or the O2 Time icon.
As you ascend from depth following a dive that has approached the no decompression limit, the Nitrogen Bar Graph will recede as control shifts to slower compartments. This is a feature of the decompression model that is the basis for multilevel diving, one of the most important advantages that Aeris dive computers offer. The no decompression algorithm is based upon Haldanes theory using maximum allowable nitrogen levels developed by Merrill Spencer.
WARNING: Prior to diving with the Atmos 2, you must also read and understand the AERIS Dive Computer Safety & Reference Manual, Doc. No. 12-7203, which provides Important Warnings and Safety Recommendations as well as general product information.
ACTIVATION To Activate the ATMOS 2, press and release the Advance (Front) button. Fig. 15 - Diagnostic Mode Fig. 16 - Serial Number 22 Wet Activation (only functional if the feature is set ON) As a backup, the ATMOS 2 will also automatically activate by water contact. This is accomplished by bridging the gap between contacts located on the stems of the control buttons and back of the module. The H2O graphic that will be displayed as an indication is described later.
After manual activation, it will also check the ambient barometric pressure, and calibrate its present depth as zero. At elevations of 2,000 feet (610 meters) or higher, it will recalibrate itself to measure depth in feet of fresh water instead of feet of sea water. If values are acceptable, the unit will enter Surface Mode. If any value is not acceptable, the unit will shut down in 5 seconds. If no dive is made within 2 hours after initial activation, the unit will automatically deactivate.
WARNING: If a Low Battery condition is displayed after diagnostics, DO NOT dive with the ATMOS 2 until the battery is changed. Fig. 18 - Set Mode 1 SET MODES To help simplify the operations you might perform at the dive site, settings are divided into 2 categories. Set Mode #1 includes several settings that you would change more often and Set Mode #2 includes those items not likely to change once you set them. Set Mode 2 can be accessed by first entering settings in Set Mode 1, or by bypassing Set Mode 1.
If the buttons are held longer and SET 1 and 2 are both bypassed, the unit will go to Simulator Mode which is described on page 75. While in the Set Mode, if neither button is pressed during a period of 2 minutes, the unit will revert to Surface Mode. ENTERING SETTINGS - SET MODE #1 TO SET - FO2 (while in the Surface Mode) Factory set for Air, FO2 can also be set to values between 21 and 50% in increments of 1%. FO2 defaults to the Air setting whenever the ATMOS 2 shuts off. Fig.
Press the Advance (Front) button to accept the setting and advance to Set Depth Alarm, or press and hold Both buttons for 2 seconds to revert to Surface Mode. Unit reverts to Surface Mode in 2 minutes if no button is pressed. TO SET - MAX DEPTH ALARM (while in the Surface Mode) Factory set for 330 feet, the Maximum Depth Alarm can be set to values between 30 feet (3 meters) and 330 feet ( 99 meters) in increments of 10 foot (3 meters). Fig.
TO SET - ELAPSED DIVE TIME ALARM (while in the Surface Mode) Factory set for 0:00 hr:min, the Alarm can be set to values between 0:10 and 3:00 hr:min in increments of 0:05 hr:min. Press Both buttons simultaneously, release when SET: 1 appears. Press and release the Advance (Front) button, FO2 appears with the value flashing. Press the Advance (Front) button 2 more times. The graphic EdT, and Alarm and Dive Time icons appear with the Elapsed Dive Time value flashing (Fig. 23).
PC INTERFACE NOTE: For more information regarding PC Interface, refer to page 72 of this manual and to documents provided with the download product. Fig. 24 - PC Interface 28 PC Interface is not a setting, it is included in the Set 1 menu for easy access when data in the unit's memory is to be downloaded (copied) to the PC download software program for storage and viewing. To download data (while in the Surface Mode) Press Both buttons simultaneously, release when SET: 1 appears.
ENTERING SETTINGS -SET MODE #2 NOTE: To return to Surface Mode at any time while in Set Mode, press and hold Both buttons for 2 seconds. The unit will automatically revert to Surface Mode after 2 minutes if no button is pressed. TO SET - UNITS OF MEASURE (while in the Surface Mode) Factory set for Imperial, Units of Measure can also be set for Metric. Press Both buttons simultaneously, release when SET: 2 appears.
TO SET - HOUR FORMAT (while in the Surface Mode) Factory set for 12 Hr (12: Am to 11: Pm), the Format can also be set for 24 Hr (0: to 24: hours). Press Both buttons simultaneously, release when SET: 2 appears. Press and release the Advance (Front) button, the Units screen appears with the set point flashing. Press the Advance (Front) button 1 more time. The graphic Hour appears with 12 (or 24) flashing (Fig. 26).
TO SET - TIME OF DAY (while in the Surface Mode) Factory set for factory local time, the Time can be set to values between 0:00 to 12:59 (Am/Pm) or 0:00 to 23:59 (24 Hr Format). Press Both buttons simultaneously, release when SET: 2 appears. Press and release the Advance (Front) button, the Units screen appears with the set point flashing. Press the Advance (Front) button 2 more times. The Time of Day appears with the Hour value flashing (Fig. 27).
TO SET - YEAR (while in the Surface Mode) Factory set for the factory local Date, the Date can be set to values between 01/01/01 and 12/31/20. Fig. 29 - Set Year Fig. 30 - Set Month Fig. 31 - Set Day 32 After having set and accepted the Time of Day, the Date appears with the graphic dAY, and Year value flashing (Fig. 29). Press and release the Select (Side) button to advance the Year value in increments of one year, or press and hold the button to scroll through the Set Points.
TO SET - AUDIBLE ALARM (while in the Surface Mode) Factory set for ON, the Alarm can be also be set to OFF. This setting also applies to the LED Warning Indicator that is synchronized with the Audible. When set OFF, the Alarm will not sound during the conditions described on page 13. Press Both buttons simultaneously, release when SET: 2 appears. Press and release the Advance (Front) button, the Units screen appears with the set point flashing. Press the Advance (Front) button 7 more times.
TO SET - MAX NITROGEN BAR GRAPH ALARM (while in the Surface Mode) Factory set for DECO (all 8 segments), the Maximum Nitrogen Bar Graph (NiBG) Alarm can be set to values between DECO (8 segments) and 1 segment. Press Both buttons simultaneously, release when SET: 2 appears. Press and release the Advance (Front) button, the Units screen appears with the set point flashing. Press the Advance (Front) button 8 more times.
TO SET - DIVE TIME REMAINING ALARM (while in the Surface Mode) Factory set for 0:00 (minutes), the Dive Time Remaining Alarm can be set to values between 0:00 and 0:20 (minutes) in increments of 1 minute. Press Both buttons simultaneously, release when SET: 2 appears. Press and release the Advance (Front) button, the Units screen appears with the set point flashing. Press the Advance (Front) button 9 more times.
TO SET - MAX PO2 ALARM (while in the Surface Mode) Factory set for 1.60 (ATA), the Maximum PO2 Alarm can be set to values between 1.20 and 1.60 (ATA) in increments of .10 (ATA). Press Both buttons simultaneously, release when SET: 2 appears. Press and release the Advance (Front) button, the Units screen appears with the set point flashing. Press the Advance (Front) button 10 more times. The graphics PO2 and MAX, and Alarm icon appear with the PO2 value flashing (Fig. 35).
TO SET - FO2 50% DEFAULT (while in the Surface Mode) Factory set ON, the FO2 50% Default feature can be set to OFF. The effects of this feature being ON or OFF are described on page 18. Press Both buttons simultaneously, release when SET: 2 appears. Press and release the Advance (Front) button, the Units screen appears with the set point flashing. Press the Advance (Front) button 11 more times. The graphics FO2 and 50 appear with the ON (or OFF) flashing (Fig. 36).
TO SET - BACKLIGHT DURATION (while in the Surface Mode) Factory set for 7 (seconds), the Backlight Duration can be set to values of 0, 3, or 7 (seconds). Press Both buttons simultaneously, release when SET: 2 appears. Press and release the Advance (Front) button, the Units screen appears with the set point flashing. Press the Advance (Front) button 12 more times. The graphic GLO and Time icon appear with the Duration value flashing (Fig. 37).
TO SET - SAMPLING RATE (while in the Surface Mode) Factory set for 30 (seconds), the Sampling Rate can be set to values of 2, 15, 30, or 60 (seconds), or 2, 5, 10 feet (.5, 1.5, 3 meters). Sampling Rate is the interval at which data samples are recorded during a dive for subsequent download to the PC program. This setting has no effect on displayed data or data in the unit's Log. Press Both buttons simultaneously, release when SET: 2 appears.
TO SET - USER SET DIGITAL GAUGE MODE (while in the Surface Mode) Factory set OFF, User Set Digital Gauge Mode can also be set ON. This feature is also described on page 66. NOTE: Once a dive is made with this feature set ON, the setting will be locked ON for 24 hours after the dive. Set Digital Gauge Mode will not appear as a selection for 24 hours after the dive. Press Both buttons simultaneously, release when SET: 2 appears.
TO SET - WET ACTIVATION (while in the Surface Mode) Factory set ON, this feature can also be set OFF (disabled). When set ON, the ATMOS 2 will automatically Activate and enter Dive Mode upon immersion in water and descent to 5 feet (1.5 meters). WARNING: If the Wet Activation feature is set OFF, the ATMOS 2 must be manually (push button) activated prior to commencing a dive. Press Both buttons simultaneously, release when SET: 2 appears.
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WARNING: Prior to diving with the Atmos 2, you must also read and understand the AERIS Dive Computer Safety & Reference Manual, Doc. No. 12-7203, which provides Important Warnings and Safety Recommendations as well as general product information.
DIVE PLANNER WARNING: The available dive times provided by the Dive Planner are only predictions. Depending on cylinder size, breathing gas consumption, and oxygen accumulation you may have less time available than indicated because of breathing gas quantity or other limitations.
No Decompression Times are only displayed for depths where there is at least 3 minutes of theoretical dive time available at the depth, taking into account a descent rate of 120 feet (36 meters) per minute. Depths greater than the Maximum Depth that can be achieved with a PO2 of 1.60 ATA will not be displayed.
WARNINGS The percentage of oxygen (FO2) in the nitrox mix being used must be 'set before each nitrox dive', unless the FO2 50% Default feature is set OFF (a user setting). The Dive Planner provides predicted times for subsequent dives. Depending on cylinder size, breathing gas consumption, and oxygen accumulation, you may have less time available than indicated because of breathing gas quantity or other limitations.
WARNING: Prior to diving with the Atmos 2, you must also read and understand the AERIS Dive Computer Safety & Reference Manual, Doc. No. 12-7203, which provides Important Warnings and Safety Recommendations as well as general product information.
DIVE MODE BAR GRAPHS As your Depth and Elapsed Dive Time increase, the Nitrogen Bar Graph (Fig. 43a) will fill with segments (green toward red) to represent the absorption of Nitrogen. While ascending to shallower depths, the segments that have filled the Nitrogen Bar Graph will begin to recede, offering a graphic representation of your multilevel diving capability. If FO2 was set for a numerical value (nitrox), the O2 Bar Graph (Fig.
During conditions in which cautionary type information is displayed (e.g., Decompression, High PO2, etc.), there is a Main Display of important information relevant to the specific condition. The diver can access another display, but it will automatically revert to the Main Display after 3 seconds. To activate the Backlight, press the Select (Side) button.
No Decompression Dive Mode - Display #2 (Fig. 45) Information includes Current Depth, Dive Time Remaining (and Mode icon), Temperature, Time of Day, and the applicable bar graphs. press and release the Advance (Front) button to view Display #3 (only if FO2 is set for a numerical value - Nitrox), or Display #1 (if FO2 is set for Air). Fig. 45- No Deco #2 No Decompression Dive Mode - Display #3 (Fig.
The Safety Stop screen (Fig. 47) will be displayed until the countdown times out, or the a descent is made below 30 feet (10 meters), or the diver surfaces. There is no Penalty if the diver surfaces prior to completing the Safety Stop. Information includes Current Depth, Stop Depth (15 feet or 4.5 meters), Stop Bar icon, Countdown Timer, Dive Time Remaining, and applicable bar graphs.
The UP Arrow and Deco Bar will flash if you are greater than 10 feet (3 meters) deeper than the Required Ceiling Stop Depth. While within 10 feet (3 meters) of, and below, the Stop Depth, both Arrows and the Bar appear solid. Total Ascent Time includes Stop Times required at all ceilings and vertical Ascent Time calculated at 60 feet (18 meters) per minute for depths deeper than 60 feet (18 meters), and 30 feet (9 meters) per minute for depths of 60 feet (18 meters) and shallower.
press and hold the Advance (Front) button for 2 seconds to acknowledge and silence the Audible Alarm (unless set OFF). press and release the Advance (Front) button to view Alt #1. Deco Dive Mode - Alternate Display #1 (Fig. 50) Information includes - Current Depth, Total Ascent Time, Maximum Depth for that dive (and icon), Elapsed Dive Time (and icon), and the applicable bar graphs. press and release the Advance (Front) button to view Alt #2. Fig.
VIOLATION MODES Violation Modes that the ATMOS 2 can enter are termed - Conditional, Delayed, and Immediate. Permanent Violation Mode and Gauge Mode are continuations of these. While in Violation Modes, the Alternate Displays previously described can be accessed using the Advance (Front) button, and the Backlight can be activated using the Select (Side) button.
Flashing The added Penalty (decompression) Time will have to be 'worked off' first, before obtaining off-gassing credit. Once the Penalty Time is worked-off, and off-gassing credit begins, required decompression Stop Depths and Time will decrease toward zero, then the Nitrogen Bar Graph will recede into the yellow Caution Zone and the ATMOS 2 will revert to the No Decompression Dive Mode. NOTE: Upon entry into Delayed Violation Modes, the Audible Alarm will sound, even if it is user Set OFF.
If your Decompression obligation requires a Ceiling Stop Depth 'between' 60 feet (18 meters) and 70 feet (21 meters), the Nitrogen Bar Graph will flash. Total Ascent Time will still be displayed. You must ascend to just deeper than, and stay as close as possible to, 60 feet (18 meters) without causing the Total Ascent Time display to flash. When the Required Stop Depth indicates 50 FT/ 15 M, etc., you can ascend to those depths and continue decompressing. Delayed Violation Mode #3 (Fig.
Immediate Violation Mode and Gauge Mode The ATMOS 2 enters Immediate Violation Mode when a situation totally exceeds its capacity to predict an ascent procedure. These dives represent gross excursions into decompression that are beyond the boundaries and spirit of the ATMOS 2 design, and an ATMOS 2 should not be used for the dives. During a Dive, if a ceiling much greater than 60 FT (18M) is required, an Immediate Violation Mode will be entered.
Flashing Fig. 57 - Immediate Violation Gauge Mode (after surfacing) The ATMOS 2 will also enter an Immediate Violation Mode 5 minutes after reaching the Surface from a dive in which a Delayed Violation occurred. On the surface, Gauge Mode displays the Dive Number, Surface Interval, Temperature, and Time of Day with the full Nitrogen and O2 Bar Graphs flashing (Fig. 57). It does not provide the FO2, Dive Planner, or Time to Fly and Desaturate features.
If PO2 continues to increase, the value displayed will increase toward a maximum value of 5.00 ATA in increments of .01 ATA. When it reaches a value of 1.60 ATA, or the PO2 Alarm set point (a user setting), the Audible Alarm will sound (unless set OFF) and the current PO2 value, PO2 symbol, O2 segment of the O2 Bar Graph, and UP Arrow will flash as a warning until PO2 decreases (Fig. 59).
HIGH OXYGEN ACCUMULATION It is important that you understand that conducting repetitive dives using enriched nitrogen-oxygen (nitrox) mixtures can lead to oxygen buildup, reducing oxygen tolerance while increasing the risk of pulmonary oxygen toxicity. AERIS strongly recommends that you avoid exceeding oxygen exposure limits, and reminds you that nitrox diving requires special training and understanding of the effects of oxygen toxicity.
You must immediately focus on making a safe controlled ascent to the surface to prevent further exposure. As your accumulation (dose) decreases during your surface interval, the O2 bar graph will gradually recede into the yellow (caution) zone and green (normal) zone. WARNING: In the event that you exceed the maximum per dive allowable oxygen exposure (dose), it is recommended that you allow a surface interval of at least 2 hours before reentering the water.
When Digital Gauge Mode is set for ON, the ATMOS 2 will operate as a digital Depth Gauge/Timer without performing nitrogen and oxygen calculations. While in this mode, the range of the Current and Max Depth displays are extended to 399 feet (120 meters) to accommodate activities involving diving with advanced breathing gas mixtures or free diving beyond the normal depth limit of the unit. NOTE: Once a dive is made with this feature set ON, the setting will be locked ON for 24 hours after the dive.
WARNING: Prior to diving with the Atmos 2, you must also read and understand the AERIS Dive Computer Safety & Reference Manual, Doc. No. 12-7203, which provides Important Warnings and Safety Recommendations as well as general product information.
POST DIVE SURFACE MODE When you ascend to 3 feet (1 meter) or shallower, the ATMOS 2 will enter Surface Mode and begin counting your surface interval. TRANSITION PERIOD The first 10 minutes is, in affect, a Transition Period during which time the following information is displayed (Fig. 62): 'Number' of that dive (during that day) Battery Consumption Indicator Surface Interval time (colon flashing) and icon (flashing).
To view that dive's Log (Fig. 63) Refer to page 68 for a description of the Log Mode and displays.
AFTER THE TRANSITION PERIOD (THE FIRST 2 HOURS) For the remainder of the first 2 hours after surfacing, information will be displayed as Surface Mode (Fig. 64) and you will have full access to other modes (e.g., Plan, Fly, Desat, Log, Set, PC, Sim). To activate the Backlight, press the Select (Side) button. Fig.
To access the Time to Fly Countdown press the Advance (Front) button 2 times (while in Surface Mode) The unit will revert to Surface Mode after 2 minutes, unless the Advance (Front) button is pressed to access the Desat Time Countdown. If a violation occurred during the dive a single dash ( - ) will appear instead of the graphic FLY. The Time to Fly counter (Fig. 66) is provided to assist you with deciding when enough surface time has elapsed to fly (or travel to higher elevations).
To access the Time to Desaturate Countdown press the Advance (Front) button 3 times (while in Surface Mode) The countdown starts 10 minutes after surfacing at 23:50 (hr:min) maximum and counts down to 0:00 (hr:min). The Time to Desaturate Countdown displays the graphic SAT and a counter (Fig. 67) that provides calculated time for tissue desaturation (release of nitrogen loading) at sea level. If a violation occurred during the dive, Desaturation Time will not be displayed.
Button Control in Log Mode The Advance (Front) button is used to access a specific dive's Log. The Select (Side) button is used to view the second and third screens (Nitrogen and Oxygen related data) for that dive. To return to Surface Mode at any time while in Log Mode, press Both buttons simultaneously for 2 seconds. The unit will automatically revert to Surface Mode after 2 minutes if no button is pressed while in the Log Mode.
To view the Second Screen of the Log (Nitrogen data) (Fig. 69) press the Select (Side) button 1 time (while viewing screen 1). Fig. 69 - Log (2nd screen) Displayed will be Log Mode icon Max Depth - reached during the dive (and graphic) Elapsed Dive Time (and icon) Temperature - minimum during that dive (and icon) Surface Interval - prior to that dive (and icon) Variable Ascent Rate Indicator - showing the maximum ascent rate maintained for 4 consecutive seconds during the dive.
AFTER THE FIRST 2 HOURS Two hours after the last dive Surface Mode will no longer be displayed, the Time to Fly and Desaturation countdowns will be displayed alternately for 3 seconds each until they count down to 0:00 or another dive is made. To access other modes or enter settings press Either button to return to Surface Mode. the unit will again revert to the Time to Fly and Desaturation countdowns after 2 hours, if no button is pressed.
DOWNLOADING DATA TO A PC Using special linking hardware dive data can be downloaded (copied) from your ATMOS 2 to an IBM compatible PC program running on a Windows® operating system. Compatibility requirements and instructions are provided with the optional download package that is available from your Authorized AERIS Dealer. NOTE: Ensure that the download product that you acquire is compatible with the ATMOS 2 and the PC equipment that you will be using.
RESET (CLEAR) FEATURE This dive computer is configured with a RESET feature that allows data to be cleared, including Nitrogen and Oxygen calculations, FO2 set point, and Log Mode entries. RESET PROCEDURE: While in Surface Mode (new activation period or after a 10 minute post dive surface interval), press the Advance (Front) button 1 time to access Plan Mode. While 30 feet (or 9 meters) is displayed in the Plan Mode, press and hold Both buttons until SET 2 appears, then release the buttons.
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WARNING: Prior to diving with the Atmos 2, you must also read and understand the AERIS Dive Computer Safety & Reference Manual, Doc. No. 12-7203, which provides Important Warnings and Safety Recommendations as well as general product information.
SIMULATOR MODE This mode provides you with the ability to practice various dive mode scenarios and computer functions while observing the various displays. Fig. 75 - Simulator Mode At any time while in Simulator Mode, pressing and holding both buttons simultaneously for 2 seconds shall revert operation to real Surface Mode.
Press and release the Select (Side) button to toggle between ON and OFF. Press and release the Advance (Front) button to accept the setting and advance to DEMO: NI-O2 with CUR (or NEW) flashing (Fig. 77). When set for NEW, calculations are based on zero residual nitrogen and oxygen loading (a clean dive). When set for CUR, calculations take into consideration any calculated residual nitrogen and oxygen remaining from previous 'actual' dives.
Descending Press and hold the Select (Side) button for 2 seconds to access Dive Mode. The DOWN Arrow will appear flashing (Fig. 80). Press and release the Select (Side) button to begin a Descent at a rate of 5 feet (1.5 m) per real time second. Press and release the Select (Side) button during the Descent to stop the Descent. Fig. 80 -Simulated Descent During the Descent, pressing and releasing the Advance (Front) button provides access to the Alternate Displays.
Ascending Press and hold the Advance (Front) button for 2 seconds to access Ascent. The UP Arrow will appear flashing (Fig. 82). Press and release the Advance (Front) button again to begin an Ascent at a rate of 60 feet (18 meters) per minute at depths deeper than 60 feet (18 meters), or a rate of 30 feet (9 meters) per minute at depths of 60 feet (18 meters) and shallower. Press and release the Advance (Front) button during the Ascent to stop the Ascent. Fig.
Simulated Post Dive Surface Mode The Simulator will enter Demo Surface Mode (Fig. 84) upon ascending to 3 feet (1 meter) or shallower. Press and hold the Select (Side) button for 4 seconds to access Time Acceleration. The small time clock icon begins flashing. Press and release the Select (Side) button to increase Surface Interval Time 1 minute per real time second. Press and release the Select (Side) button during the Time Acceleration to restore the normal time rate of 1 second per real second.
WARNING: Prior to diving with the Atmos 2, you must also read and understand the AERIS Dive Computer Safety & Reference Manual, Doc. No. 12-7203, which provides Important Warnings and Safety Recommendations as well as general product information.
CARE AND CLEANING Protect your ATMOS 2 from shock, excessive temperatures, chemical attack, and tampering. Protect the lens against scratches with a transparent Instrument Lens Protector. Small scratches will naturally disappear underwater. CAUTION: Never spray aerosols of any kind on, or near, the instrument. The propellants may chemically attack the plastic.
WARNING: If a Low Battery Condition is indicated prior to a dive, DO NOT attempt to dive with the ATMOS 2 until the battery is replaced. INSPECTIONS AND SERVICE Your ATMOS 2 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).
To Obtain Service Take you ATMOS 2 to an Authorized AERIS Dealer or send it to the nearest AERIS Regional Distributor Facility. To return your ATMOS 2 to AERIS: Record all dive data in the Log and/or download the data in memory. All data will be erased when it receives factory service. Package it using a protective cushioning material.
The procedures that follow must be closely adhered to. Damage due to improper battery replacement is not covered by the ATMOS 2's 2 year warranty. Battery Hatch Removal Inspect the Button, Lens, and Housing to ensure they are not cracked or damaged. If there is any sign of moisture in the module, DO NOT use the ATMOS 2 until it receives proper service by an Authorized Aeris Dealer, or the Aeris factory. Locate the Battery Compartment on the back of the Housing.
NOTE: If the old battery can be removed and the new one inserted within 8 seconds, nitrogen and oxygen calculations ,and settings, will be retained for repetitive dives. Battery Removal Remove the Retaining Bar located across the lower portion of the Battery (Fig. 88a). Remove the Hatch O-ring. DO NOT use tools. Using care not to damage the Battery Contacts (Fig. 88 b/c), slide the Battery up and out of the right side of the Battery Compartment.
Battery Installation Slide a new 3 volt type CR2450 Lithium Battery, negative (-) side down into the Battery Cavity from the right side and ensure that it slides under the contact clip on the left rim of the cavity. Orient the Retaining Bar across the lower portion of the Battery and carefully push it down into position (Fig. 89). Battery Hatch and Hatch Ring Installation Lightly lubricate the new Hatch O-ring with silicone grease and place it on the inner rim of the Battery Hatch.
Using your fingers, turn the Ring counter clockwise 5 degrees until the tabs engage, then tighten it 5 more degrees by turning it counter clockwise with the aide of a small blade screwdriver, pressing against the upper/left arm of the Ring (Fig. 92). Fig. 92 -Ring Installation NOTE: If available, an adjustable face spanner tool or pair of pointed pliers can be used by placing the tips in the small holes of the Ring (Fig. 93).
ALTITUDE SAMPLING/COMPENSATION Atmospheric pressure decreases as altitude increases above sea level. Weather systems and ambient temperature also affect barometric pressures. Consequently, depth reading instruments that do not compensate for the decrease in pressure indicate depth readings shallower than the depth they are actually at. The ATMOS 2 automatically compensates for decreased ambient pressure when activated at high altitudes up to 14,000 feet (4,270 meters).
SPECIFICATIONS CAN BE USED AS Air Computer Nitrox Computer Digital Depth Gauge/Timer NO DECOMPRESSION MODEL Basis: Modified Haldanean Algorithm 12 tissue compartments Data Base: Diving Science and Technology (DSAT) - Rogers/ Powell Performance: Tissue compartment halftimes (mins.
SPECIFICATIONS (CONTINUED) OPERATIONAL MODES (continued) No Decompression Dive: #1 (Current Depth, Dive Time Remaining, Max Depth, Elapsed Dive Time, Bar Graphs) #2 (Current Depth, Dive Time Remaining, Temperature, Time of Day, Bar Graphs) #3 - only if a nitrox dive (Current Depth, Dive Time Remaining, Current PO2, Bar Graphs) Safety Stop - for dives deeper than 30 feet (9 meters) Decompression Dive: Main - default (Current Depth, Total Ascent Time, Stop Depth / Time, Bar Graphs) Al
SPECIFICATIONS (CONTINUED) DISPLAY RANGE/RESOLUTION (continued) Numeric Displays: Time to Fly Time to Desaturate Temperature Range: 23:50 - 0:00 hr:min* (* starting 10 min after the dive) 23:50 (max) - 0:00 hr:min* (* starting 10 min. after the dive) 0 to 99°F (-9 to 60°C) Special Displays: Diagnostic Display Out of Range (- - -) Gauge Mode Countdown Timer Resolution: 1 minute 1 minute 1° Occurrence After Manual Activation >330 feet (>99.
SPECIFICATIONS (CONTINUED) OPERATIONAL PERFORMANCE Function: Depth Timers Accuracy: ±1% of full scale 1 second per day Dive Counter: Displays Dives #1 to 24, 0 if no dive made yet Resets to Dive #1, after #24 or upon reactivation after having shut Off Dive Log Mode: Stores 24 most recent dives in memory for viewing After 24 dives, adds 25th dive in memory and deletes the first dive Altitude: Operational from sea level to 14,000 feet (4,267 meters) elevation Samples Ambient Pressure every 3
SPECIFICATIONS (CONTINUED) OPERATIONAL PERFORMANCE (continued) Activation: Manual - push button (recommended) Automatic - by immersion in water (as a backup, if set ON) H2O graphic indicates Wet Contacts are bridged (unit must be dried prior to transport or storage). Cannot be manually activated deeper than 4 feet (1.2 meters), if the Water Activation feature is set OFF.
SERVICE RECORD O DI Purchased from ______________________ RESP Date of purchase _____________________ VER Serial & Rev Number __________________ N SI LE B Below to be filled in by an Authorized AERIS Dealer: Date Service Performed Dealer / Technician 95
AERIS 2002 Davis Street San Leandro, CA 94577 Tel: 510/346-0010 Fax: 510/346-0015 Web site: http://www.diveaeris.com E-mail: info2@diveaeris.com © 2002 Design, 2001 Doc. No.
