LIMITED TWO-YEAR WARRANTY For details, refer to the Product Warranty Registration Card provided. COPYRIGHT NOTICE This 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 Tabata USA, Inc. and Tabata Corp. Ltd. / 2002 Design. Element II Owner's Manual, Doc. No.
CONTENTS WARRANTY, NOTICES, DECOMPRESSION MODEL .................................................................................................... 2 OVERVIEW ....................................................................................................................................................................... 7 FULL LCD ....................................................................................................................................................................
CONTENTS (continued) SET A GROUP (NORM/GAUG ALARMS) ................................................................................................................ 29 Set Audible Alarm ................................................................................................................................................. 29 Set Depth Alarm ...................................................................................................................................................
CONTENTS (continued) NORM DIVE MODES ...................................................................................................................................................... 53 NO DECO DIVE TIME REMAINING (NDC) .............................................................................................................. 54 OXYGEN ACCUMULATION ......................................................................................................................................
CONTENTS (continued) FREE DIVE OPERATING MODE ................................................................................................................................... 85 FREE COUNTDOWN TIMER (CDT) ......................................................................................................................... 88 FREE ELAPSED DIVE TIME (EDT) ALARM ............................................................................................................ 90 FREE DEPTH ALARMS (DAs) .......
OVERVIEW 7
c b d a q e f S g p h o i n A M j m l k FULL LCD 8 Components: a. Icon - Log Mode b. NiBG (Nitrogen Bar Graph) c. Icon - operating mode Surface Interval Plan NDC Time No Deco Time Remaining Deco Total Ascent Time d. O2BG (O2 Bar Graph) e. Icon - Stop Time Required Elapsed Dive Time f. Select (S) Button g. Icon - Time of Day h. Icon - Depth/Max Depth i. ASC (Ascent Rate Indicator) j. Advance (A) Button k. Icon - Descend Arrow Icon - Stop Bar Icon - Ascend Arrow l. Icon - Dive # m.
INTRODUCTION Welcome to TUSA and thank you for choosing the Element II ! It is extremely important that you read this Owner's Manual in sequence and understand it completely before attempting to use the Element II as a dive computer. Remember that technology is no substitute for common sense, and a dive computer only provides the person using it with data, not the knowledge to use it.
S Fig. 1A - NORM MODE OPERATING MODES The Element II features 3 Operating Modes, NORM (Fig. 1A) which is used for Air and Nitrox SCUBA dives, GAUG (Fig. 1B) used for SCUBA dives in which Nitrogen-Oxygen calculations are not performed, and FREE (Fig. 2) used for activities that do not use SCUBA. > NORM Mode allows access to Fly, Desat, Log, and History Modes, as well as entering settings. > GAUG Mode is similar without access to Desat Mode. > FREE Mode only allows access to specific Free Modes. S Fig.
Situations that will activate the NORM/GAUG 10 second Alarm include • Descent deeper than the Max Depth Set Point selected. • Dive Time Remaining at the Set Point selected. • Elapsed Dive Time at the Set Point selected. • High PO2 of 1.60 ATA or the Set Point selected. • High O2 of 300 OTU (single or daily exposure). • Nitrogen Bar Graph at the segment Set Point selected. • NORM/GAUG Ascent Rate exceeds 60 FPM (18 MPM) when deeper than 60 FT (18 M), or 30 FPM (9 MPM) at 60 FT (18 M) and shallower.
• FREE Dive NiBG Alarm (Caution zone, 4 segments) - 3 beeps 3 times. • Entry into Deco during a FREE Dive (Permanent Violation) - 3 beeps 3 times. • Free Dive Mode Countdown Timer reaches 0:00 - each 3 beeps 3 times. During the following NORM Dive situations, the 10 second continuous tone will be followed by a 5 second steady beep that will not turn off when acknowledged • Ascending above a required Decompression Stop Depth for more than 5 minutes (referred to as a Delayed Violation).
POWER SUPPLY The Element II uses (1) 3 volt CR2450 Lithium Battery which should maintain operation for 1 year or 300 dive hours if 2 dives are conducted during each dive period. The Element II checks battery voltage every 2 minutes while on the surface. • If voltage of the Element II decreases to the Warning level (2.75 volts), the Battery icon will appear on Surface display screens (Fig. 3a) as an indication that the Battery should be changed prior to commencing a series of dives.
PC INTERFACE Interface with a PC (for data Upload and Download) is accomplished by connecting the Element II to a PC USB Port using the USB Interface Cable avaiable as an optional accessory. The PC Interface program, together with a USB Driver, is downloadable from tusa.com. The Help portion serves as the user manual and can be printed for personal use. The Settings Upload portion is used to check the Element II's existing Settings and for entering Time, Alarm, and other settings into the Element II.
FEATURES AND DISPLAYS 15
BAR GRAPHS The Element II features 3 Bar Graphs >> NiBG, O2BG, and ASC. NiBG (Nitrogen Loading Bar Graph) The NiBG (Fig. 6a) represents tissue loading of nitrogen, showing your relative no decompression or decompression status. As your depth and elapsed dive time increase, segments will add to the NiBG, and as you ascend to shallower depths, the segments will recede, indicating that additional no decompression time is allowed for multilevel diving.
Oxygen Bar Graph (O2BG) The O2BG (Fig. 7a) represents oxygen accumulation, showing the maximum of either per dive accumulated oxygen, or 24 hour period accumulated oxygen. As your oxygen exposure (accumulation) increases during the dive, segments will add to the O2BG, and as saturation decreases, it will begin to recede, indicating that additional exposure is allowed for that dive and 24 hour period. a S M A b Fig. 7 - O2BG & ASC Ascent Rate Indicator (ASC) The ASC (Fig.
ALPHA/NUMERIC DISPLAYS S M b A a Fig. 8 - DIVE MAIN 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 Current Depth is displayed on the Main Dive screens (Fig. 8a) with the FT (or M) icon from 0 to 330 FT (99.9 M) in NORM/ FREE, 399 FT (120 M) in GAUG, in increments of 1 FT (.1 M).
a When Times are calculated projections such as NDC and Elapsed Dive Time (Fig. 10a/b), the colon is solid (non blinking). FREE Dive Mode displays Times in minute:second format. S Date is only displayed in Log Mode. Temperature Temperature can be viewed by accessing an Alternate Display while on the surface and during dives (Fig. 11a). M A b Fig.
WARNINGS AND SAFETY RECOMMENDATIONS • It should not be considered that the capabilities built into the Element II provide an implied approval or consent from TUSA for individuals to exceed the defined limits for recreational diving, as agreed on by all internationally recognized training agencies. • The oxygen features of the Element II are intended for use by recreational divers trained for Nitrox diving by an instructor certified by a recognized training agency to teach diving with Nitrox.
SURFACE MODES 21
OPERATING MODES As described previously, there are 3 Operating Modes • NORM - for Air or Nitrox SCUBA dives • GAUG - for SCUBA dives with no Nitrogen/Oxygen calculations • FREE - for breath hold dives with no SCUBA SURFACE MODE After activation and while the default Surface Main screen is displayed, depressing the M button repeatedly (2 sec each time) steps through the operating mode Surface Main screens.
NORM SURF MAIN, information includes (Fig. 12): > Surface Interval Time (hr:min) with clock/wave icon > Graphic Nor > Tank 1 icon representing Gas 1, which is the default start Gas and default Gas 10 minutes after a dive > Number of that dive (0 if no dive has been made yet) with # icon > Battery icon if a Low Battery Condition exists > NiBG, if any after a NORM or FREE dive > O2BG, if any after a NORM Nitrox dive S A M Fig.
S M A Fig. 13 - NORM SURF ALT NORM SURF ALT, information includes (Fig. 13): > Altitude graphic (EL2 to EL7), if above 3000 feet (915 meters) elevation, blank if below. > Temperature with degrees icon and graphic F (or C) > Time of Day (hr:min) with Time (clock) and AM (or PM) icons. • After 5 seconds, or pressing/releasing the A button (< 2 sec) will revert to the NORM Surface Main screen. • Depressing the S button will activate the Backlight.
SETTING FO2 FOR NITROX DIVES • For each value of FO2, the MOD (Max Operating Depth) that can be achieved for the PO2 Alarm limit previously set will be displayed. • When the FO2 50% Default is set On and FO2 Gas 1 is set for a numerical value, 10 minutes on the surface after that dive, the FO2 for Gas 1 will be displayed as 50 and further dives will be calculated based on 50% O2 for oxygen calculations and 21% O2 for Nitrogen calculations (79% Nitrogen) unless the FO2 for Gas 1 is set before the dive.
• If FO2 for Gas 1 is set for 21%, it will remain set for 21% for that series of dives until set for a higher numerical value. • If the FO2 50% Default is set Off, FO2 for Gas 2 will remain at it's Set Point previously selected until it is changed. If the FO2 50% Default is set On, FO2 for Gas 2 will Default to 50% after the dive. • The Element II is programmed to prevent FO2 for Gas 2 from being set at values lower than the FO2 Set Point for Gas 1.
Set FO2 Gas 1, information includes (Fig. 15A/B): > Graphic FO2 > Max Depth allowed for the PO2 Alarm set with MAX and FT (or M) icons and graphic PO2, blank if Air > Tank 1 icon representing Gas (mix) 1 > FO2 Set Point, flashing • Depressing the S button will scroll upward through the Set Points from Air to 21 through 50% in 1% increments, at a rate of 8 Set Points per second. > The scroll will stop when the button is released, or momentarily at 32% (even if the button is held depressed).
S M A Fig. 16A - SET FO2 GAS 2 (50% Nitrox setting) S M A Fig. 16B - SET FO2 GAS 2 (100% Nitrox setting) 28 Set FO2 Gas 2, information includes (Fig. 16A/B): > Graphic FO2 > Max Depth allowed for the PO2 Alarm set with MAX and FT (or M) icons and graphic PO2, blank if Air > Tank 2 icon representing Gas (mix) 2 > FO2 Set Point, flashing • Depressing the S button will scroll upward through the Set Points in 1% increments, at a rate of 8 per second.
Set FO2 50% Default, information includes (Fig. 17): > Graphics FO2, dFLt, and 50 > Set Point graphic OFF (or ON), flashing. • Pressing and releasing the S button momentarily (< 2 sec) will toggle between OFF and ON. • Pressing and releasing the A button momentarily (< 2 sec) will save the setting and revert to the Set F screen. • Depressing the M button for 2 seconds, or if no button is pressed for a period of 2 minutes, operation will revert to the NORM (or GAUG) Surface Main screen. S M A Fig.
Set Audible Alarm, information includes (Fig. 19): > Graphic AUD > Set Point graphic ON (or OFF), flashing. S M A Fig. 19 - SET AUDIBLE AL • Pressing and releasing the S button momentarily (< 2 sec) will toggle between ON and OFF. • Pressing and releasing the A button momentarily (< 2 sec) will save the setting and access Set Depth Alarm. • Depressing the A and S buttons simultaneously for 2 seconds will save the setting and revert to the Set A screen.
• Depressing the A and S buttons simultaneously for 2 seconds will save the setting and revert to the Set A screen. • Depressing the M button for 2 seconds, or if no button is pressed for a period of 2 minutes, operation will revert to the NORM (or GAUG) Surface Main screen. FREE Mode has separate Depth and EDT alarms. SET EDT ALARM, information includes (Fig. 21): > Graphic EDT (meaning Elapsed Dive Time). > Set Point value (hr:min), flashing, with wave/clock icons.
Set NiBG Alarm, information includes (Fig. 22): > Graphic NBG (meaning Nitrogen Bar Graph). > NiBG Set Point (segments) flashing, with NI icon. S M A Fig. 22 - SET NIBG AL Wave over Clock over Profile icon represents Dive Time Remaining • Pressing and releasing the S button momentarily and repeatedly (< 2 sec each time) will step through the Set Points from 1 to all 5 segments (Deco) one at a time.
• Pressing and releasing the S button momentarily and repeatedly (< 2 sec each time) will step upward through the Set Points one at a time. • Pressing and releasing the A button momentarily (< 2 sec) will save the setting and access Set PO2 Alarm. • Depressing the A and S buttons simultaneously for 2 seconds will save the setting and revert to the Set A screen.
SET U GROUP (UTILITIES) S M SET U >> Wet Activation >> Units >> Deep Stop >> Safety Stop >> Conservative Factor >> Backlight Duration >> Sample Rate. > Depressing the A and S buttons simultaneously for 6 seconds while the NORM (or GAUG) Surface Main screen is displayed, will access the Set U screen (Fig. 25). > Pressing and releasing the A button momentarily (< 2 sec) while Set U is displayed will access Set Wet Activation. A Fig. 25 - SET U (Utilities) Set Wet Activation, information includes (Fig.
Set Units, information includes (Fig. 27): > Set Point icons/graphics F and FT (or C and M), flashing. • Pressing and releasing the S button momentarily (< 2 sec) will toggle between Imperial (F, FT) and Metric (C, M). • Pressing and releasing the A button momentarily (< 2 sec) will save the setting and access Set Deep Stop. • Depressing the A and S buttons simultaneously for 2 seconds will save the setting and revert to the Set U screen.
Set Safety Stop, information includes (Fig. 29): > Graphic SAF (meaning Safety Stop). > Set Point ON or OFF, flashing, with STOP icon. S M A Fig. 29 - SET SAFETY STOP • Pressing and releasing the S button momentarily (< 2 sec) will toggle the Set Point between OFF and ON. • Pressing and releasing the A button momentarily (< 2 sec) will save the setting and access Set Conservative Factor. • Depressing the A and S buttons simultaneously for 2 seconds will save the setting and revert to the Set U screen.
• Depressing the M button for 2 seconds, or if no button is pressed for a period of 2 minutes, operation will revert to the NORM (or GAUG) Surface Main screen. NOTE: When the Conservative Factor is set ON, the No Deco Limit times are reduced to values equivalent to those that would be available at the next higher 3000 foot (915 meter) Altitude. Set Backlight Duration, information includes (Fig. 31): > Graphics BL and dur (meaning Backlight Duration).
S M Set Sampling Rate, information includes (Fig. 32): > Graphic SR (meaning Sampling Rate). > Set Point (seconds value), flashing, with clock icon and graphic SEC (meaning Seconds). • Pressing and releasing the S button momentarily and repeatedly (< 2 sec each time) will step upward through the Set Points of 2, 15, 30, and 60 (seconds). • Pressing and releasing the A button momentarily (< 2 sec) will save the setting and revert to the Set U screen.
Set Date Format, information includes (Fig. 34): > Set Point graphic M - D (or D - M), flashing. > Graphic dAtE. • Pressing and releasing the S button momentarily (< 2 sec) will toggle the Set Point between M - D and D - M. • Pressing and releasing the A button momentarily (< 2 sec) will save the setting and access Set Hour Format. • Depressing the A and S buttons simultaneously for 2 seconds will save the setting and revert to the Set T screen. S M A Fig.
S M • Depressing the S button will scroll upward through the Hour Set Points at a rate of 8 per second until it is released. • Pressing and releasing the S button momentarily and repeatedly (< 2 sec each time) will step upward through the Set Points one at a time. • Pressing and releasing the A button momentarily (< 2 sec) will save the Hour setting the Minute digits will flash. • Depressing the S button will scroll upward through the Minute Set Points at a rate of 8 per second.
• Depressing the S button while the Year digits are flashing will scroll upward through the Set Points at a rate of 8 per second from 2009 to 2052 (with leap year corrections). • Pressing and releasing the S button momentarily and repeatedly (< 2 sec each time) will step upward through the Year Set Points one at a time. • Pressing and releasing the A button momentarily (< 2 sec) will save the Year setting and the Month digits will flash, regardless of their location on the display (Fig. 38A/B).
S M A Fig. 39 - SERIAL NUMBER (with Firmware Revision) Settings revert to the last ones entered/ saved when 24 hours elapse without a dive or after a dive. 42 SERIAL NUMBER, information includes (Fig. 39): Depressing the A and S buttons simultaneously for 10 seconds while viewing the NORM (or GAUG) Surface Main screen will access the Serial Number screen. > Graphic SN. > Factory programmed Serial Number. > Firmware revision number (e.g., graphic r1A or higher).
NORM PLAN MODE TUSA strongly recommends that you review the Plan Mode dive times prior to every NORM 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 Plan Mode indicates adjusted dive times that are available for the next dive, based on residual nitrogen or oxygen accumulation (whichever is in control) following the last dive and surface interval.
S M The screens will sequence through Depths from 30 up to 190 FT (9 to 57 M), or the Max Depth that will allow theoretical No Deco Dive Time of at least 1 minute based upon the previous dive profiles in a series of repetitive dives and taking into account descent and ascent rates of 60 FPM (18 MPM). A Fig. 41A - PLAN (Nitrogen control) NOTE: When the Conservative Factor is set ON, No Deco Dive times are reduced to the values of the next 3,000 foot (915 meter) higher Altitude.
• Press and release the S button momentarily and repeatedly (< 2 sec each time) to increase the Planned Depth in increments of 10 FT (3 M), displaying the information one screen at a time. • Depressing the M button for 2 seconds, or if no button is pressed for a period of 2 minutes, operation will revert to the NORM Surface Main screen. FLY MODE Time to Fly is a counter that begins counting down 10 minutes after surfacing from a dive from 23:50 to 0:00 (hr:min).
• Depressing the M button for 2 seconds, or if no button is pressed during a 2 minute period, operation will revert to the NORM (or GAUG) Surface Main screen. • Pressing the L button will activate the Backlight. DESAT MODE (NORM only) The Time to Desaturate counter provides calculated time for Tissue Desaturation at sea level taking into consideration the Conservation Factor setting. It begins counting down 10 minutes after surfacing from a dive, counting down from 23:50 max to 0:00 (hr:min).
• Depressing the M button for 2 seconds, or if no button is pressed during a 2 minute period, operation will revert to the NORM Surface Main screen. • Pressing the L button will activate the Backlight. NORM/GAUG LOG MODE Log Mode displays information from the latest 24 NORM and/or GAUG dives sequentially in reverse order (the most recent first). Log information is retained until over written by another dive. Battery removal will not affect the Log data stored for viewing.
S M A Fig. 44 - LOG PREVIEW • Pressing and releasing the S button momentarily (< 2 sec) will access that dive's Log Data 1 screen. S M A Fig. 45 - LOG DATA 1 48 Log Preview, information includes (Fig. 44): > Log (book) icon. > Graphic NOR (or GAU). > Dive Mode (wave/clock/profile) icon, if NORM. > Date (month.day or day.month) the dive was conducted. > Time of Day the dive began (hr:min) with clock icon and AM (or PM) icon if set for 12 Hour Format.
• Pressing and releasing the S button momentarily (< 2 sec) will access Log Data 2. • Pressing and releasing the A button momentarily (< 2 sec) will revert to the NORM (or GAUG) Surface Main screen. • Depressing the M button for 2 seconds, or if no button is pressed during a 2 minute period, operation will revert to the NORM (or GAUG) Surface Main screen. • Pressing the L button will activate the Backlight. Log Data 2 (only if Nitrox), information includes (Fig. 46): > Log (book) icon.
S M HISTORY MODE History Mode displays information for NORM and/or GAUG Dives. Information is retained indefinitely. Battery removal will not affect the History data stored for viewing. • History Mode can be accessed by pressing and releasing the A button momentarily 2 times (< 2 sec each time) while viewing the NORM or GAUG Surface Main. A Fig. 47 - HISTORY 1 History 1, information includes (Fig. 59): > Graphic HIS. > Total Elapsed Dive Time recorded, up to 9999, with graphic Hour and clock icon.
• Depressing the M button for 2 seconds, or if no button is pressed during a 2 minute period, operation will revert to the NORM (or GAUG) Surface Main screen. • Depressing the S button for 2 seconds will activate the Backlight. NOTE: FREE Dives are not recorded in the viewable Log or History. The data is stored in memory for subsequent download to the TUSA PC Interface program.
WARNINGS: Making decompression dives without the proper preparation and training will place you in an unnecessarily dangerous situation. Existing data for making planned decompression dives is limited, and virtually non-existent for repetitive decompression diving. Decompression diving greatly increases your risk of decompression sickness. Special training, equipment, and support are necessary for diving deeper than the maximum recommended sport diving depth limit(s).
NORM DIVE MODES 53
NO DECO DIVE TIME REMAINING (NDC) The Element II constantly monitors No Decompression status. NDC is the maximum amount of time that you can stay at your present Depth before entering a Decompression situation. It is calculated based on the amount of Nitrogen absorbed by hypothetical tissue compartments. The rates each of these compartments absorb and release Nitrogen is mathematically modeled and compared against a maximum allowable Nitrogen level.
OXYGEN ACCUMULATION If FO2 was set for a numerical value (Nitrox), the O2BG (Fig. 50a) will add segments to represent oxygen accumulation for that dive, or 24 hour period, whichever amount is greater. a S If O2 reaches 100% of the allowed limit (300 OTU), the graphic O2 will replace NDC. High O2 is described later. M ASCENT RATE INDICATOR (ASC) The ASC shows how fast you are ascending.
NORM NO DECOMPRESSION DIVE MODE When the Wet Activation feature is set ON, the Element II will enter the NORM No Decompression Dive Mode any time you descend to 5 FT (1.5 M) for 5 seconds, even if not yet activated. When the Wet Activation feature is set OFF, the Element II will not enter Dive Mode upon descent unless it is activated first. NORM No Deco Main, information includes (Fig.
NORM No Deco ALT 1, information includes (Fig. 53) > Temperature with degrees icon and graphic F (or C) > Time of Day (hr:min) with AM (or PM) and clock icons > Max Depth with MAX and FT (or M) icons • Press/release the A button to access ALT 2. • Operation will revert to the Main after 5 seconds if A is not pressed. NORM No Deco ALT 2, information includes (Fig.
S M No Deco Deep Stop On any No Deco dive in which Depth exceeds 80 FT (24 M), a Deep Stop Preview screen (Fig. 55) can be accessed that will display the graphic DS (meaning Deep Stop) and a recommended Stop Depth calculated to be 1/2 the Max Depth and a Stop Time of 02:00 (2 minutes) with DS and STOP icons. It will revert to the Main after 5 seconds. A • The intent of this screen is to suggest that a Stop should be made as indicated to help reduce tissue nitrogen loading prior to final ascent.
Press and release the A button (< 2 seconds) to access the ALT 1 screen (Fig. 57A) that displays Elapsed Dive Time, press it again to view the ALT 2 screen (Fig. 57B) that displays Temperature, Time, and Max Depth, then if a Nitrox dive press it again to view ALT 3 that displays FO2 and PO2 (Fig. 57C). When the countdown reaches 0:00, the No Deco Main will be displayed and the Deep Stop feature will be disabled for the remainder of that dive. S Fig.
No Deco Safety Stop (Fig. 58) Upon ascending to 20 FT (6 M) on any No Deco dive in which Depth exceeded 30 FT (9 M), a Safety Stop screen will appear displaying a recommended Stop at 15 FT (4.5 M) with a Countdown Timer that counts down from 03:00 to 0:00 (min:sec). The Safety Stop will be displayed until the countdown times out, or you descend below 30 FT (9 M) during the countdown, or you surface during the countdown.
CAUTIONARY MODES 61
DECOMPRESSION Decompression mode activates when theoretical No Decompression time and depth limits (NDLs) are exceeded. Upon Entry into Decompression, the Audible Alarm will sound until acknowledged or for 10 seconds. While the audible is sounding, the UP Arrow icon, Stop Bar icon, and full NiBG will flash to alert you. Deco Entry, information includes (Fig.
NOTE: Upon entry into Deco, the Deep Stop and Safety Stop features are disabled for the remainder of that dive, even when the Deco obligation is complete and No Deco status is regained. Managing Decompression Stops To fulfill your decompression obligation, you should make a safe controlled Ascent to a depth slightly deeper than, or equal to, the Stop Depth indicated and decompress for the Time indicated.
CONDITIONAL VIOLATION (CV) If you ascend shallower than the calculated Deco Stop Depth, the Audible Alarm will sound, and no off gassing credit will be given, until you descend below the Stop Depth. If you descend below the required Ceiling before 5 minutes have elapsed, operation will continue to function in Deco and off gassing credit will resume. CV Main, information includes (Fig.
NOTE: Upon entry into the following Violation modes, the Alarm will sound, even if Set OFF. When these events occur, the Alarm cannot be acknowledged (silenced) by pressing the S button. DELAYED VIOLATION #1 (DV1) If you remain above the required Deco Ceiling Depth for more than 5 minutes, the full NiBG will flash until you descend below the required Stop Depth. This is a continuation of a Conditional Violation. DV1 Main, information includes (Fig.
DELAYED VIOLATION #2 (DV2) If the Decompression obligation requires a Ceiling Depth between 60 FT (18 M) and 70 FT (21 M), the full NiBG and TAT (Total Ascent Time) digits will flash. When this occurs, you must make a controlled ascent to just deeper than, and stay as close as possible to, 60 FT (18 M) without causing the NiBG and TAT to flash. When the Deco Stop Depth indicates 50 FT (15 M), etc., you can ascend to those Stop Depths and continue decompressing. DV2 Main, information includes (Fig.
DELAYED VIOLATION #3 (DV3) If you descend deeper than the MOD (Max Operating Depth) of 330 FT (99.9 M), the Up Arrow icon will flash, and the Current Depth will only display 3 dashes ( - - - ) flashing signifying that you are Out of Range. Max Depth on the ALT screen will only indicate 3 dashes ( - - - ). Upon ascending above 330 FT (99.9 M), the Current Depth display will be restored, however, Max Depth will only display 3 dashes for the remainder of that dive.
VIOLATION GAUGE MODE (VGM) If calculations require a Deco Stop Depth greater than 70 FT (21 M), or if Deco is entered while operating in FREE Mode (described later), operation will enter Violation Gauge Mode (VGM) for the remainder of that dive and for 24 hours after surfacing. VGM turns the Element II into a digital instrument without any nitrogen or oxygen calculations or monitoring functions or displayed information until 24 contiguous hours elapse on the surface with no dives.
In the event that a dive is made during the 24 hour period, a full 24 hour surface interval must then be served before all functions are restored. VGM Main (on surface), information includes (Fig.
HIGH PO2 When partial pressure of oxygen (PO2) becomes equal to, or greater than, 0.2 (ATA) less than the PO2 Alarm value set; the Audible will sound. Note that while in Deco, High PO2 will only alarm at 1.60. • Press/release the S button to acknowledge the alarm. > The graphic PO2 and Up Arrow icon will be displayed flashing on the Main screen (Fig. 67) until the audible is silenced, then the graphic PO2 will alternate with NDC time until PO2 decreases to 0.2 below the alarm Set Point.
HIGH O2 The O2BG (Fig. 68a) represents oxygen accumulated as a result of the repetitive Nitrox dives you have conducted during that operating period. The O2BG lets you monitor how close you are coming to the limits of oxygen exposure. If the theoretical amount of oxygen accumulated reaches the limit for a single exposure, or 24 hour period (300 OTU = 100%), the graphic O2 replaces NDC time and the full O2BG and Up Arrow icon will be displayed flashing (Fig. 69). a S M A Fig.
WARNINGS AND SAFETY RECOMMENDATIONS • 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). • Plan Mode 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.
SWITCHING GAS MIXES 73
SWITCHING GAS MIXES (NORM only) During NORM Dives, the FO2 calculations/displays can be switched from Gas 1 to 2. > Switching Gas cannot be performed while on the surface. > Every dive begins with Gas 1 and 10 minutes after surfacing from a multiple gas dive, operation defaults to the Gas 1 FO2. > Access to Gas Switching screens can only be accomplished during the time that a NORM Dive Main screen is being displayed and cannot be performed during the time that an Alarm is sounding.
To access the Preview screens while viewing a NORM Dive Main screen. • Depress the M button for 2 seconds to view the Gas 1 Preview screen. • Press and release the M button momentarily (< 2 sec) while the Gas 1 Preview screens is displayed to view the Gas 2 Preview screen. • Depress the M button for 2 seconds while viewing a Preview screen to Switch FO2 to that Gas. > Operation will revert to the NORM Main screen after 10 seconds of no further M button action. S M A Fig.
GAS SWITCH ROUTINE NORM DIVE MAIN M 2 sec Switches from Gas 2 to Gas 1 (after 3 sec) GAS 1 PREVIEW M 2 sec M < 2 sec Switches from Gas 1 to Gas 2 (after 3 sec) M 2 sec GAS 2 PREVIEW M < 2 sec Back to NORM DIVE MAIN 76
NORM POST DIVE MODES 77
POST DIVE FIRST 10 MINUTES ON SURFACE When you ascend to 2 FT (0.6 M) for 1 second, the Surface Main screen will be displayed. If you descend during the first 10 minutes after surfacing (referred to as the Transition Period), time underwater will be considered a continuation of that dive. The time at the surface (if less than 10 minutes) will not be added as Dive Time. NORM Surface Main, information includes (Fig.
POST DIVE AFTER 10 MINUTES ON SURFACE Once 10 minutes have elapsed, the Surface Interval time colon will stop flashing indicating that the Dive and Transition Period are completed, and a subsequent descent will be considered a new dive. You will then have full access to all NORM DC surface modes (e.g., Plan, Fly, Sat, Log, Hist, Set, etc.). • Press and release the S button momentarily (< 2 sec) to access Plan Mode.
UPLOADING SETTINGS AND DOWNLOADING DATA The Element II is configured with a Data Port located on the back of the left side that enables it to be connected to a PC through a USB port using a special Interface Cable that is available as an optional accessory. The USB Driver required for the Interface system is downloadable from tusa.com.
GAUGE OPERATING MODE 81
DIGITAL GAUGE MODE (GAUG) When GAUG is selected as the operating mode, the Element II will operate as a Digital Depth Gauge/Timer without performing nitrogen and oxygen calculations. • To access GAUG mode while the NORM Surface Main screen is displayed, press the M button 1 time for 2 seconds. • If the graphic GAU is flashing, Gauge Mode can be selected as the operating dive mode by pressing and releasing the M button momentarily (< 2 sec). The graphic GAU becomes solid and Gauge Mode is selected.
• Depress the A button for 2 seconds to the GAUG SURF ALT screen (Fig. 77 - Altitude, Temperature, Time of Day). • Depress the A and S buttons simultaneously for 2 seconds to access the Set menu (F >> A >> U). • Press and release the S button momentarily (< 2 sec) to access the Time to Fly screen, if a dive was conducted. • Depress the S button for 2 seconds to activate the Backlight.
S M Gauge Dive ALT, information includes (Fig. 79) > Temperature with degrees icon and graphic F (or C) > Time of Day (hr:min) with clock and AM (or PM) icons > Max Depth with FT (or M) and MAX icons • The display will revert to the MAIN screen after 5 seconds or if the A button is pressed. • Depress the S button for 2 seconds to activate the Backlight. A Fig. 79 - GAUG DIVE ALT If you descend deeper than 330 FT (99.9 M), a cautionary mode referred to as Delayed Violation 3 will be activated.
FREE DIVE OPERATING MODE 85
FREE DIVE MODE When Free Dive Mode is selected as the operating mode, the Element II will operate with select features. Nitrogen loading is calculated based on a default FO2 of Air and the amount remaining during 24 hours is carried over between FREE and NORM modes. • To access Free Dive Operating mode while viewing the Gauge Surface Main screen (no Gauge dive was made), press the M button 1 time for 2 seconds. • The graphic FRE will flash indicating that it can be selected as the operating mode.
• Depress the A and S buttons simultaneously for 2 seconds to access the Set Free EDT (Elapsed Dive Time) Alarm, then Set Free Depth Alarms 1, 2, 3. • Depress the S button for 2 seconds to activate the Backlight. Free Surface ALT 1, information includes (Fig.
> The display will revert to the Main after 5 seconds or if the A button is pressed/ released. • Depress the S button for 2 seconds to activate the Backlight. FREE MODE COUNTDOWN TIMER (CDT) After accessing the Free CDT Status screen from the Free Surface Main screen, the CDT can be started, stopped, and set.
Once the CDT has been Set and Started (by selecting ON), it will continue to run in the background while on the surface until turned OFF (stopped) or the Time reaches 0:00 at which time the Alarm will strike, the graphic CDT will be displayed, and the Timer will revert to OFF. When a set Countdown Time reaches 0:00, the Audible Alarm will sound during which the graphic CDT will flash (Fig. 85). Upon descending to 5 FT/1.5 M (i.e., entry into Free Dive mode), CDT operation will continue, if in progress.
S M A Fig. 87 - CDT SET (ready to start) S M A Fig. 88 - FREE EDT ALARM (during dives) 90 • Pressing and releasing the A button momentarily (< 2 sec) will save the Minute Set Point and the Seconds digits will flash. • Depressing the S button will scroll upward through the Seconds Set Points in 1 second increments at a rate of 8 per second.
NOTE: The FREE EDT Alarm can only be Set (turned OFF or ON) while on the Surface and can not be changed during a Dive. S Set Free EDT Alarm, information includes (Fig. 89) > Graphics EDT, 30 with clock icon, and SEC > Set Point OFF (or ON) flashing. M • Pressing and releasing the S button momentarily (< 2 sec) will toggle the Set Point between OFF and ON. • Pressing the A button momentarily (< 2 sec) will accept the setting and access Set Free Depth Alarm 1.
• Press and release the A button momentarily (< 2 sec) while viewing the Set Free EDT Alarm screen to access Set Free DA1 (Depth Alarm 1) screen. DA2 and DA3 are similar. S M A Fig. 91 - SET FREE DA 1 Set > > > Free DA1, information includes (Fig. 91) Graphic DA1 Set Point OFF (or ON) flashing Depth Set Point digits flashing if ON is selected, with MAX and FT (or M) icons • Pressing and releasing the S button momentarily (< 2 sec) will toggle the Set Point between OFF and ON.
Free Dive Main, information includes (Fig. 92) > NiBG, if any Nitrogen remaining from NORM or FREE dives conducted within the previous 24 hours > NDC Time (min:sec) with wave/clock/profile icons > Temperature with degrees icon and graphic F (or C) > Elapsed Dive Time (min:sec) with wave/clock icons > Current Depth with FT (or M) icon S M • Press and release the A button momentarily (< 2 sec) to access ALT 1 (Free CDT Status). • Depress the S button for 2 seconds to activate the Backlight. A Fig.
• If no button is pressed during a period of 10 seconds, operation will revert to the Main. S M A Fig. 94 - FREE DIVE ALT 2 Free Dive ALT 2, information includes (Fig. 94) > Time of Day with clock and AM (or PM) icons > Max Depth with MAX and FT (or M) icons > The display will revert to the Main after 5 seconds or if the A button is pressed/released. • Depress the S button for 2 seconds to activate the Backlight.
Free Depth Alarms When Depth reaches the Free Depth Alarm 1 Set Point, 3 short beeps will sound 3 times during which the graphic DA1 will flash (Fig. 96), then NDC will be restored. S The audible and flashing graphic will be repeated when Depth reaches the DA 2 and DA 3 Set Points, if set On. M If Ascent is made above a Free Depth Alarm Set Point and then a descent is made below it, the respective Alarm (DA) will reset and sound again. A Fig.
S M When Nitrogen loading increases to the Caution level, 3 short beeps will sound 3 times; and 4 NiBG No Deco segments, the Up Arrow icon, and the graphic NBG (in place of NDC) will be displayed (flashing) (Fig. 98). After the beeps, the flashing will continue until the NiBG recedes to 3 segments at which time the NDC will be restored and the Up Arrow icon will be removed. A Fig.
ADDITIONAL INFORMATION PERTAINING TO FREE DIVE MODE Although breathing apparatus is not utilized for Free Dive activities, nitrogen tissue loading remains a factor. Nitrogen loading is calculated based upon a fixed FO2 of AIR.
RESPONSIBLE COMPUTER DIVING • Plan each dive, and dive your plan. The Element II 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. • Do not plan any dive that exceeds your training or experience level. • Inspect your Element II before every dive.
GENERAL 99
CARE AND CLEANING Protect your Element II 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. • Soak and rinse the Element II in fresh water at the end of each day of diving, and check to ensure that the areas around the low pressure (depth) sensor (Fig. 100a) and button are free of debris or obstructions.
NOTE: The procedures that follow must be closely adhered to. Damage due to improper battery replacement is not covered by the unit's warranty. When the battery is removed, settings and calculations for repetitive dives will be retained in non volatile memory for subsequent operations. MODULE REMOVAL FROM BOOT If the Module is in a Console, bend the rubber Console Boot back to expose the edge of the Module.
Fig. 101 - RING REMOVAL Battery Removal • Remove the Retaining Bar located across the lower portion of the Battery (Fig. 102a). • Remove the Hatch O-ring. DO NOT use tools • Using care not to damage the Battery Contacts (Fig. 102b/c), slide the Battery up and out of the Battery Compartment. b a c Fig. 102 - HATCH REMOVAL 102 Battery Hatch Removal • Locate the Battery Compartment on the back of the Module.
• If it is necessary to clean the Battery Compartment, flush it and all components with a solution of 50% white vinegar and 50% fresh water. Rinse with fresh water, and allow to dry overnight, or blow dry with a hair dryer set at no heat. WARNING: If damage or corrosion is found, return your Element II to an Authorized TUSA Dealer, and DO NOT attempt to use it until it has received factory prescribed service. Fig.
• Carefully place the Battery Hatch (with O-ring) into position on the rim of the Battery Compartment, then press it evenly and completely down into place with your same thumb. • Maintain the Battery Hatch securely in place and, using your other hand, slide the Retaining Ring down off your thumb and into position around the Battery Compartment. • The tabs on the Retaining Ring fit down into the two slots located at the 2 and 8 o'clock positions.
WARNING: If there are any portions of the display missing or appearing dim, or if a Low Battery condition is indicated, return the Element II to an Authorized TUSA Dealer for a complete evaluation before attempting to use it. RETURNING THE MODULE TO BOOT • If the Boot was fitted with a Spacer and it was previously removed, replace the Spacer into the Boot. • Orient the Module over the opening in the Boot, and dip the bottom edge into it while pressing the top edge with the palm of your hand.
ALTITUDE SENSING AND ADJUSTMENT Prior to the first dive of a series of repetitive dives, Altitude (i.e., Ambient Pressure) is measured upon activation and every 15 minutes until a dive is made. > While it is operating in Surface mode after a dive, measurements are taken every 15 minutes during the 24 hour period after surfacing. > Measurements are only taken when the unit is dry. > Two readings are taken, the second reading 5 seconds after the first.
When the Conservative Factor feature is set ON, allowable dive times are calculated based upon the next higher 3,000 foot (915 meter) Altitude. All adjustments for Altitudes greater than 11,000 feet (3,355 meters) are then made to allowable dive times for 14,000 feet (4,270 meters). If the Conservative Factor is set ON while at Sea Level, calculations are based upon NDLs listed in the tables for the 5,001 to 6,000 foot (1,526 to 1,830 meter) range.
PELAGIC Z+ ALGORITHM >> NDLS (HR:MIN) AT ALTITUDE (METRIC) Altitude (meters) Depth (M) 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 0 to 915 916 to 1220 1221 to 1525 1526 to 1830 1831 to 2135 2136 to 2440 2441 to 2745 2746 to 3050 3051 to 3355 3356 to 3660 to 3:37 1:55 1:08 0:50 0:36 0:27 0:20 0:16 0:13 0:10 0:09 0:08 0:06 0:06 0:05 0:05 0:05 2:41 1:27 0:55 0:39 0:28 0:20 0:16 0:12 0:09 0:08 0:07 0:06 0:05 0:05 0:04 0:04 0:04 2:31 1:21 0:53 0:37 0:26 0:19 0:15 0:11 0:09 0:07 0:06 0:06 0:0
SPECIFICATIONS CAN BE USED AS • Air Computer • Nitrox Computer • Digital Depth Gauge/Timer • Free Dive Depth Gauge/Timer NORM/GAUG SET MODES DIVE COMPUTER PERFORMANCE • Buhlmann ZHL-16c based Pelagic Z+ algorithm • No Deco limits closely follow PADI RDP • Decompression in agreement with Buhlmann ZHL16c and French MN90 • No Deco Deep Stops - Morroni, Bennett • Deco Stops (not recommended) - Blatteau, Gerth, Gutvik • Altitude - Buhlmann, IANTD, RDP (Cross) • Altitude corrections and O2 limits based on NOAA
SPECIFICATIONS (CONTINUED) NUMERIC DISPLAYS: • Dive Number • Current Depth • Maximum Depth • Gas 1 FO2 Set Point • Gas 2 FO2 Set Point • PO2 Value • Dive Time Remaining • No Deco Deep Stop Time • No Deco Safety Stop Time • Deco Stop Time • Deco Total Ascent Time • Norm/Gaug Elapsed Dive Time • Free Elapsed Dive Time • Surface Interval Time • Free Surface Interval Time • • Dive Log Surface Interval Time to Fly • Time to Desaturate • • • Temperature Time of Day Free Countdown Timer • • Out of Range (-
SPECIFICATIONS (CONTINUED) BAR GRAPHS Nitrogen Bar Graph • No Deco Normal zone • No Deco Caution zone • Decom Warning zone segments 3 1 1 Oxygen (O2) Bar Graph: • Normal zone • Caution zone • Danger zone segments 3 1 1 Ascent Rate Indicator: 60 FT (18 M) & Shallower • • • segments 0 1 2 3 (all) Normal Zone Caution Zone Too Fast Zone (flashing) FPM 0 - 10 11 - 25 26 - 30 > 30 Deeper than 60 FT (18 M) MPM 0-3 3.5 - 7.5 8-9 >9 segments 0 1 2 3 (all) FPM 0 - 20 21 - 50 51 - 60 > 60 MPM 0-6 6.
SPECIFICATIONS (CONTINUED) NORM/GAUG Dive Log Mode: • Stores 24 most recent NORM/GAUG dives in memory for viewing • After 24 dives, adds 25th dive in memory and deletes the older dive Altitude: • Operational from sea level to 14,000 feet (4,270 meters) elevation • Measures ambient pressure every 30 minutes in Watch Mode and when Dive Computer Mode is accessed, every 15 minutes while in NORM/GAUG/FREE Surface Modes. • Does not measure ambient pressure when Wet.
SPECIFICATIONS (CONTINUED) Operating Temperature: • Out of the water - between 20 °F and 140 °F (-6 and 60 °C). • In the water - between 28 °F and 95 °F (-2 and 35 °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 unit and its battery with body heat before diving.
TUSA INTERNATIONAL CONTACTS Tabata USA, Inc 2380 Mira Mar Avenue Long Beach, CA 90815 Tel: 562-498-3708 Fax: 562-498-0415 www.tusa.com info@tusa.com Tabata Europe Corporation B.V. Den Brielstraat 2 B, 1055 RV Amsterdam, The Netherlands Tel: 31-(0)20 68 15 955 Fax: 31-(0)20 68 24 527 www.tusa.nl info@tusa.nl Tabata Australia PTY Ltd. 4D James Ruse Business Park Northmeade, NSW 2152 Australia Tel: 61-(0) 2-9890-4555 Fax: 61-(0) 2-9890-5222 www.tusa.com.au info@tabata.com.au Tabata Co. Ltd.
INSPECTION / SERVICE RECORD Serial Number: ______________________________________________________ Firmware Revision: ______________________________________________________ Date of Purchase: ______________________________________________________ Purchased from: _____________________________________________________ Below to be filled in by the Authorized TUSA Dealer: Date Service Performed Dealer / Technician 115
