Oceanic GEO Operating Manual
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Oceanic GEO Operating Manual

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OCEANIC
GEO
Operating Manual
(-r03 cover art to be placed on front/back is provided separately)

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Summary of Contents for Oceanic GEO

  • Page 1 OCEANIC Operating Manual (-r03 cover art to be placed on front/back is provided separately)

  • Page 2: Full Lcd

    Components: a. Mode (M) Button b. Select (S) Button c. Light (L) Button d. Advance (A) Button e. LED Warning Light f. Bar Graph g. Icon - Log Mode h. Icon - Ascend i. Icon - Surface Interval O2 Time Remaining No Deco Time Remaining Total Ascent Time FO2 Set Point...

  • Page 3: Table Of Contents

    CONTENTS FULL LCD ................................2 WARRANTY, NOTICES, DECOMPRESSION MODEL ..................7 INITIAL ACTIVATION .............................. 8 INTRODUCTION AND GENERAL FEATURES AND DISPLAYS ................9 INTERACTIVE CONTROL CONSOLE ......................10 OPERATING MODE STRUCTURE ........................11 OPERATION AS A DIVE COMPUTER ......................12 PC INTERFACE ..............................
  • Page 4 CONTENTS (continued) DIVE COMPUTER SURFACE SEQUENCE AND OPERATING MODES ............. 37 DC OPERATING MODES ..........................38 SURFACE MODE ............................. 38 NORM Surface Mode ............................ 40 NORM AND GAUG SURFACE SET MODES ....................43 Set F Group (FO2) ............................43 Setting FO2 for Nitrox Dives ......................... 44 Set FO2 50% Default ............................
  • Page 5 CONTENTS (continued) OVERVIEW OF DIVE MODE INFORMATION ...................... 71 DISPLAYED SYMBOLS AND ICONS ......................72 DIVE TIME REMAINING (DTR) ........................73 No Decompression DTR (NDC) ........................73 O2 DTR (OTR) .............................. 74 VARIABLE ASCENT RATE ..........................75 ELAPSED DIVE TIME (EDT) ..........................76 CONTROL OF DISPLAYS ..........................
  • Page 6 No Decompression Limits at Altitude ......................129 OXYGEN EXPOSURE LIMITS ........................130 SPECIFICATIONS ............................131 ERROR (RESET DURING A DIVE) ........................ 137 INSPECTION / SERVICE RECORD ....................... 138 OCEANIC WORLDWIDE ..........................139 Pay special attention to items marked with this Warning symbol.

  • Page 7: Warranty, Notices, Decompression Model

    User Setable Display (U.S. Patent no. 5,845,235) is owned by Suunto Oy (Finland). DECOMPRESSION MODEL The programs within the GEO simulate the absorption of nitrogen into the body by using a mathematical model. This model is merely a way to apply a limited set of data to a large range of experiences.

  • Page 8: Initial Activation

    In this mode, Date and Time are updated as they normally would be. However, they are not displayed. Upon waking the GEO up, the correct Date and U.S. Pacific Time will be displayed and it will be ready to operate with full functions.

  • Page 9: Introduction And General Features And Displays

    WARNING: Prior to diving with the GEO, you must also read and understand the Oceanic Dive Computer Safety and Reference Manual, Doc. No. 12-2262, which provides Important Warnings and Safety Recommendations as well as general product information. INTRODUCTION GENERAL FEATURES AND DISPLAYS...

  • Page 10: Interactive Control Console

    Welcome to OCEANIC and thank you for choosing the GEO ! It is extremely important that you read this Operating Manual in sequence and understand it completely before attempting to use the GEO as a dive computer. It is equally important that you read the Oceanic Dive Computer Safety and Reference Manual (Doc.

  • Page 11: Operating Mode Structure

    OPERATING MODE STRUCTURE Main Sequence Unless it is operating in Dive Computer mode, the GEO will be (while at home) ON in the default WATCH MAIN TIME (home time) mode (Fig. Main Time 1), like a standard WATCH, until the Mode is changed.

  • Page 12: Operation As A Dive Computer

    History Modes. GAUG Mode only allows access to Fly, Log, and History Modes. Once a dive is made in GAUG Operating Mode, the GEO is locked into that Mode for 24 hours after the dive. PC INTERFACE Interface with a PC is accomplished by connecting the GEO to a PC USB Port using the OceanLog USB Interface Cable.

  • Page 13: Symbols And Alpha Numeric Graphics

    Most warning situations that activate the Audible Alarm while operating in NORM or GAUG Mode cause the GEO to emit 1 beep per second for 10 seconds, or until the situation is corrected, or it is acknowledged by momentarily pressing and releasing the S button (less than 2 seconds).
  • Page 14 FREE Dive Mode has its own set of Alarms which emit 3 short beeps either 1 or 3 times which cannot be acknowledged or set Off. A red LED Warning Light, located on the left side of the housing, is synchronized with the Audible Alarm.

  • Page 15: Backlight

    A single short beep (which cannot be disabled) is emitted for the following - • Upon completion of a Hot Swap battery change. • Change from Delayed to Full Violation 5 minutes after the dive. 3 short beeps (which cannot be disabled) are emitted for the following - •...

  • Page 16: Power Supply

    WARNING for 1 year or 300 dive hours if 2 dives are conducted during each dive period. The GEO checks its battery voltage every 2 minutes during surface operation. • If voltage decreases to the Warning level (2.75 volts), the Battery icon will appear on Surface display screens (fig.

  • Page 17: Watch Features And Displays

    WARNING: Prior to diving with the GEO, you must also read and understand the Oceanic Dive Computer Safety and Reference Manual, Doc. No. 12-2262, which provides Important Warnings and Safety Recommendations as well as general product information. WATCH FEATURES AND DISPLAYS...

  • Page 18: Local Default Time

    LOCAL DEFAULT TIME Watch Main Time (Fig. 5) is the current Time at your home location and is normally selected as the Local Default Time. The normal Watch screen sequence accessed with momentary presses (less than 2 seconds each) of the M button is - Fig.

  • Page 19: Main Time

    While viewing any of the Watch Mode displays, pressing and holding the M button for 2 seconds or if no button is pressed for 2 minutes, operation will revert to the Watch Time screen selected to be the Local Default Watch Time (Main or Alter- nate).

  • Page 20: Set Main Time

    SET MAIN TIME This Mode allows the Date and Time of Day to be set which will also serve as the basis for ALTERNATE TIME values. There are 3 Time Set screens - Set Hour Format, Set Time of Day, and Set Date. NOTE: MAIN TIME must be selected as the Local Default Time in order to set the Time and Date.
  • Page 21 • Pressing the A button momentarily (< 2 seconds) will save the Hour Format Set Point and access the SET TIME screen with the HOUR Set Point flashing (Fig. 9). • HINT - Pressing the A button repeatedly (< 2 seconds each time) will step through the Time/Date Settings, bypassing those that don't require setting.
  • Page 22 Displayed on the SET DATE screen will be the graphic YEAR, Month and Day (or Day and Month if set for metric) with the YEAR Set Point flashing (Fig. 11). • Depressing and holding the S button while the YEAR Set Point is flashing will scroll through the Set Points in 1 year increments at a rate of 4 per second from 2006 to 2049 Fig.

  • Page 23: Alternate Time

    • Pressing and releasing the A button momentarily (< 2 Main Time/Date can seconds) will save the Set Point and/or advance to the also be set using the PC MAIN TIME screen. Settings Upload program which is on the OceanLog software CD. NOTE: DAY of the WEEK is set automatically based upon the Date that has been set.

  • Page 24: Set Alternate Time

    • Depressing the S button for 2 seconds will interchange ALTERNATE TIME with MAIN TIME making ALTERNATE TIME the Local Default Time screen. • Pressing the L button will activate the Backlight. • Depressing both the A and S buttons simultaneously for 2 seconds will access the SET ALTERNATE TIME Mode with the Set Point flashing.

  • Page 25: Countdown Timer

    If no button is pressed during a period of 2 minutes, the unit FREE Mode has will revert to the MAIN TIME screen. separate COUNT- DOWN TIMER WATCH COUNTDOWN TIMER (HR:MIN) Pressing the M button momentarily 2 times (< 2 seconds each) while the Local Default Time screen is displayed will access the Countdown TIMER screen, displaying the remaining Count- down Time (hr:min) if running, or OFF flashing (Fig.
  • Page 26 • Depressing both the A and S buttons simultaneously for 2 seconds will access the SET WATCH COUNT DOWN TIMER screen indicated by the graphics TIMR and SEt, symbol TIME, and HOUR Set Point flashing (Fig. 17). > If no button is pressed during a period of 2 minutes, the unit will revert to the Local Default Watch Time screen.

  • Page 27: Chronograph

    CHRONOGRAPH (Stop Watch/Lap Timer) • Pressing and releasing the M button momentarily 3 times (< 2 seconds each) while the MAIN TIME screen is displayed will access the CHRONOGRAPH displaying the elapsed time if previously started or 0:00:00.00 (hr:min:sec.1/100th sec), flashing (Fig. 19). •...

  • Page 28: Daily Alarm

    • Pressing and releasing the M button momentarily (< 2 seconds) will advance to DAILY ALARM. • Depressing and holding the M button for 2 seconds will revert to the Local Default Watch Time screen. While the Chronograph is running, it will remain on the screen until a button operation is performed.

  • Page 29: Set Daily Alarm

    > Upon being toggled to ON, the Alarm will be set to sound every day at the Time indicated. • Depressing both the A and S buttons simultaneously for 2 seconds will access the SET DAILY ALARM screen allowing a new Time to be set. •...
  • Page 30 • Depressing and holding the S button while the MINUTE Set Point is flashing will scroll through the Set Points in 1 minute increments at a rate of 4 per second from :00 to :59. • Pressing and releasing the A button momentarily (< 2 seconds) will save the MINUTE Set Point and/or advance to the DAILY ALARM screen indicated by the graphic ON (or OFF) flashing.

  • Page 31: Dive Computer Features And Displays

    WARNING: Prior to diving with the GEO, you must also read and understand the Oceanic Dive Computer Safety and Reference Manual, Doc. No. 12-2262, which provides Important Warnings and Safety Recommendations as well as general product information. DIVE COMPUTER FEATURES AND DISPLAYS...

  • Page 32: Bar Graph

    No Decompression status and the fifth at the right indicates a Decompression condition. When the GEO is set to operate in NORM Nitrox mode, the Bar Graph will represent oxygen accumulation when the O2 data screen (Alternate Display) is accessed temporarily. The graphic O2BG will appear as an indication (Fig.
  • Page 33 24 hour period. The GEO will store oxygen accumulation calculations for up to 10 dives conducted during a 24 hour period. If the maximum limit for NORM dive oxygen loading has been exceeded for that day (24 hour period), all of the segments of the O2 Bar Graph will be displayed flashing (Fig.

  • Page 34: Alpha / Numeric Displays

    While you cannot provide a guarantee against the occurrence of decompression sickness, you may choose your own personal zone of caution based upon age, physique, excessive weight, etc., to reduce the statistical risk. Within the available NORM Mode parameters that can be set (described later) are a TLBG Alarm and a Conservative Factor Fig.

  • Page 35: Temperature Display

    (Fig. 28a). Another time display (Fig. 28b) is located in the lower row. Both displays are identified by the symbol TIME. When the GEO is operating in Dive Computer mode, Date is displayed only to identify dives when they are accessed in the LOG Mode.
  • Page 36 NOTE: Each display represents unique pieces 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. You must also understand the icons, symbols, and alpha/ numeric messages presented.

  • Page 37: Dive Computer Surface Sequence And Operating Modes

    WARNING: Prior to diving with the GEO, you must also read and understand the Oceanic Dive Computer Safety and Reference Manual, Doc. No. 12-2262, which provides Important Warnings and Safety Recommendations as well as general product information. DIVE COMPUTER SURFACE SEQUENCE...

  • Page 38: Dc Operating Modes

    DIVE COMPUTER (DC) OPERATING MODES The GEO features 3 selectable DC Operating Modes - • NORM - for Normal Air or Nitrox dives • GAUG - for dives with no Nitrogen/Oxygen calculations (Once a dive is made in GAUG Mode, dive computer operation is locked into Gauge Mode for 24 hours after the dive.
  • Page 39 SURF MAIN screen for that Operating Mode (NORM, GAUG, or FREE) will be displayed. At any time while operating in Surface Modes, the GEO will enter Dive Mode upon descent to 5 FT (1.5 M) for 5 seconds. • During the 2 hour pre dive surface period, if the M button...

  • Page 40: Norm Surface Mode

    When the 10 minute Surface Time has elapsed, the Local Default Watch TIME screen (Main or Alternate Time) will replace the Surface Mode display. The SURF MAIN screen can then be accessed by pressing the M button for 2 seconds. NORM SURF MAIN, information provided includes (Fig.
  • Page 41 NORM SURF MAIN - Button Operations: • Pressing the L button will activate the Backlight. • Repeat press/release of the A button (< 2 seconds each time) will step through the Surface Sequence - SURF MAIN > PLAN > FLY > SAT > LOG > HISTORY •...
  • Page 42 NORM SURF ALTERNATE, information includes (Fig. 34): > Bar Graph with the graphic O2BG, representing Oxygen accumulation. > FO2 Set Point with FO2 icon. > Nx icon. • The display will revert to the NORM SURF MAIN screen after 5 seconds unless the A button is pressed. Fig.

  • Page 43: Norm And Gaug Surface Set Modes

    NORM AND GAUG SURFACE SET MODES NORM/GAUG Set Mode Sequence: SURF MAIN > SET F > SET A > SET U > Serial Number. Access and step through of the sequence is gained by re- peated simultaneous 2 second presses of the A and S buttons. SET A (Alarms) and SET U (Utilities) Set Points can also be set/ changed using the PC Settings Upload program.

  • Page 44: Setting Fo2 For Nitrox Dives

    Setting FO2 for NORM Nitrox Dives: For each value of FO2, the Maximum Operating Depth (MOD) that can be achieved for the PO2 Alarm Set Point limit previously set will be displayed. When the FO2 50% DEFAULT is set ON and FO2 is set for a numerical value, 10 minutes on the surface after that dive, FO2 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 FO2 is set before the dive.
  • Page 45 Maximum Operating Depths affected by the PO2 limit set will not be displayed when FO2 is set for AIR. Internally, the GEO keeps track of the oxygen loading so that if FO2 is subsequently set for a numerical value, the oxygen...

  • Page 46: Set Fo2 50% Default

    • Depressing and holding the S button while the Set Point is flashing will scroll through the Set Points from AIR to 21 through 50% in 1% increments, at a rate of 8 per second. • The scroll will stop when the button is released, or momentarily at 32% (even if the button is held depressed).

  • Page 47: Set A Group (Norm/Gaug Alarms)

    SET A GROUP (NORM/GAUG ALARMS) Set A Sequence: SET A > Audible > Depth > EDT > TLBG > DTR > PO2 The SET A Group can also be set/changed using the PC Settings Upload program. Fig. 40 - SET A >...

  • Page 48: Set Depth Alarm

    • Pressing and releasing the S button (< 2 seconds) will toggle between ON and OFF. • Pressing and releasing the A button momentarily (< 2 seconds) will save the setting and/or advance to the SET DEPTH ALARM screen with the Set Point flashing. •...

  • Page 49: Set Edt (Elapsed Dive Time) Alarm

    • Pressing and releasing the A button momentarily (< 2 seconds) will save the setting and/or advance to the SET EDT ALARM screen with the Set Point flashing. • Pressing and releasing the A button momentarily and repeatedly (< 2 seconds each time) will step through the other SET A screens.

  • Page 50: Set Tlbg (Tissue Loading Bar Graph) Alarm

    • Pressing and releasing the A button momentarily and repeatedly (< 2 seconds) will step through the other SET A screens. • Depressing the A and S buttons simultaneously for 2 seconds will save the setting and revert back to the SET A screen.

  • Page 51: Set Dtr (Dive Time Remaining) Alarm

    • Depressing the A and S buttons simultaneously for 2 seconds will save the setting and revert back to the SET A screen. • Depressing and holding the M button for 2 seconds or if Whichever Time no button is pressed for a period of 2 minutes operation (NDC or O2) will revert to the NORM or GAUG SURF MAIN screen.

  • Page 52: Set Po2 Alarm

    • Depressing and holding the M button for 2 seconds or if no button is pressed for a period of 2 minutes operation Setting the PO2 Alarm to activate will revert to the NORM or GAUG SURF MAIN screen. before reaching the Max allowed limit of 1.60 ATA is highly recommended.

  • Page 53: Set U Group (Utilities)

    SET U GROUP (UTILITIES) Set U Sequence: SET U > Wet Activation > Units > Safety Stop > Conservative Factor > Backlight Duration > Sampling Rate. The SET U Group can also be set/changed using the PC Settings Upload program. The settings for Wet Activation, Units, Conservative Factor, and Backlight Duration also apply to FREE Mode.

  • Page 54: Set Wet Activation

    SET WET ACTIVATION, information includes (Fig. 48): > Graphic WET > Set Point graphic ON (or OFF) flashing. • Pressing and releasing the S button will toggle between ON and OFF. • Pressing and releasing the A button momentarily (< 2 seconds) will save the setting and/or advance to the SET Fig.

  • Page 55: Set Safety Stop

    • Pressing and releasing the A button momentarily (< 2 seconds) will save the setting and/or advance to the SET SAFETY STOP screen with the Time Set Point flashing. • Pressing and releasing the A button momentarily and repeatedly (< 2 seconds each time) will step through the other SET U screens.

  • Page 56: Set Conservative Factor

    • Pressing and releasing the A button momentarily (< 2 seconds) will save the Safety Stop settings and/or advance to the SET CONS screen with the Set Point flashing. • Pressing the A button momentarily and repeatedly (< 2 seconds) will step through the other SET U screens.

  • Page 57: Set Backlight Duration

    • Depressing and holding 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 SURF MAIN screen. NOTE: When the Conservative Factor is set ON, No Deco Limit times are reduced to values equivalent to those that would be available at the next higher 3000 foot (915 meter) Altitude.

  • Page 58: Set Sampling Rate

    NORM (or GAUG) SURF MAIN screen will access the SN screen displaying (Fig. 53): > Graphic SN > Factory programmed Serial Number of the GEO. > Firmware revision number (e.g., graphic r1A). • Depressing the A and S buttons simultaneously for 2 seconds will revert to the NORM (or GAUG) SURF MAIN screen.

  • Page 59: Plan Mode

    MAIN screen. NOTE: The Serial Number and Firmware Revision will be requested in the event that you contact Oceanic regarding the GEO. Enter them in the Records section provided in the back of this Manual. NORM PLAN MODE Oceanic strongly recommends that you review the PDPS (Pre Dive...
  • Page 60 • While the PLAN LEAD-IN screen is displayed, pressing and releasing the S button momentarily and repeatedly (< 2 seconds each time) will increase the Planned Depth in increments of 10 FT (3 M), displaying the information one Depth screen at a time. Information provided includes Depths and allowable No Decompression Dive Times.
  • Page 61 PLAN MODE LEAD-IN, information includes (Fig. 54): > Graphic PLAN > FO2 Set Point with FO2 icon > PO2 Alarm Set Point (x.xx ATA) with Nx and PO2 icons, when numerical values are displayed. • Press and release the S button momentarily (< 2 seconds) to access the first screen (30 FT/9 M) of the PDPS.

  • Page 62: Fly Mode

    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). Ten minutes after surfacing from a NORM, GAUG, or FREE dive, operation reverts to the Watch Mode Time screen with the Time to Fly Countdown running in the background.

  • Page 63: Desat Mode

    • Pressing and releasing the A button momentarily (< 2 seconds) will advance to SAT MODE. • Depressing and holding the M button for 2 seconds will revert to the NORM (or GAUG) SURF MAIN screen. • If no button is pressed during a 2 minute period, operation will revert to the NORM (or GAUG) SURF MAIN screen.

  • Page 64: Log Mode

    • Depressing and releasing the A button momentarily and repeatedly 3 times (< 2 seconds each time) while viewing the NORM SURF MAIN screen will access SAT MODE. NORM SURF > PLAN > FLY > SAT DESAT TIME, information includes (Fig. 57): >...
  • Page 65 After exceeding 24 dives, the most recent Dive completed will be added to the LOG and the oldest deleted. Dives will be numbered 1 to 24 starting at #1 each time a new series of dives begins. After it shuts Off 24 hours after a dive, the first dive of the next new series will be #1.
  • Page 66 LOG PREVIEW, information includes (Fig. 58): > Graphic No with the dive number (1 to 24) for that series. > Log icon. > Time of Day the dive began (hr:min) with TIME icon, and graphic A (= Am) or P (= Pm) if set for 12 Hour Format. This will be the Local Default Time selected, either Main or Alternate (with lazy 8 symbol if Alternate).
  • Page 67 LOG DATA 1, information includes (Fig. 59): > TLBG with the maximum accumulation segment flashing, others fixed up to end-of-dive accumulation. All segments flashing if a Violation occurred. > Graphic NO-D, DECO, GAUG, or VIOL indicating the type of dive when completed. >...
  • Page 68 • Depressing and holding 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) SURF MAIN screen. • Pressing the L button will activate the Backlight. LOG DATA 3, information includes (Fig.

  • Page 69: History Mode

    NORM/GAUG HISTORY MODE HISTORY Mode displays accumulative information for up to 9999 Dives, 9999 Dive Hours, and the Maximum Depth achieved. HISTORY information is retained indefinitely. Battery removal will not affect the HISTORY data stored for viewing. • 10 minutes after a Non Violation NORM Dive, pressing and releasing the A button momentarily and repeatedly 5 times (<...
  • Page 70 • Pressing and releasing the A button momentarily (< 2 seconds) will advance to the NORM (or GAUG) SURF MAIN screen. • Depressing and holding 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) SURF MAIN screen.

  • Page 71: Overview Of Dive Mode Information

    WARNING: Prior to diving with the GEO, you must also read and understand the Oceanic Dive Computer Safety and Reference Manual, Doc. No. 12-2262, which provides Important Warnings and Safety Recommendations as well as general product information. OVERVIEW OF DIVE MODE...

  • Page 72: Displayed Symbols And Icons

    OVERVIEW OF DISPLAYED SYMBOLS AND ICONS SYMBOLS MEANING Maximum Depth (or PO2) FT (or M) Depth Units (Feet or Meters) SURF TIME Surface Interval Time, NORM/GAUG (hr:min) or FREE (hr:min:sec) TIME O2 O2 Dive Time Remaining (hr:min) TIME NDC No Decompression Dive Time Remaining (hr:min) TIME TAT Total Ascent Time Deco Stops plus vertical ascent Times (hr:min) FO2 Set Point...

  • Page 73: Dive Time Remaining (Dtr)

    DIVE TIME REMAINING (DTR) One of the most important pieces of information on Oceanic dive computers is the Dive Time Remaining numeric display. The GEO constantly monitors No Decompression status and Oxygen Accumula- tion. The Dive Time Remaining display will indicate the No Deco Time or O2 Time, whichever Time is the least amount available.

  • Page 74: O2 Dtr (Otr)

    The algorithm used is based upon Haldane’s theory using maximum allowable nitrogen levels developed by Merrill Spencer. Repetitive diving control is based upon experiments designed and conducted by Dr. Ray Rogers and Dr. Michael Powell in 1987. Diving Science and Technology ®...

  • Page 75: Variable Ascent Rate

    VARIABLE ASCENT RATE Alerts associated with Ascent Rate are based upon 2 sets of speeds which change at a reference depth of 60 FT (18 M). WARNING: At depths greater than 60 FT (18 M), Ascent Rates should not exceed 60 FPM (18 MPM). At depths of 60 FT (18 M) and shallower, Rates should not exceed 30 FPM (9 MPM).

  • Page 76: Elapsed Dive Time (Edt)

    The maximum duration that Elapsed Dive Time will be displayed is 9 hours and 59 minutes (9:59). In the event that the GEO is at depth for a greater time, it will cease operation as a Dive Computer and revert to operation as a Watch, display- ing the Main Time screen.

  • Page 77: Norm Type Dive Modes

    WARNING: Prior to diving with the GEO, you must also read and understand the Oceanic Dive Computer Safety and Reference Manual, Doc. No. 12-2262, which provides Important Warnings and Safety Recommendations as well as general product information. NORM TYPE DIVE MODES...

  • Page 78: Wet Activation Contacts

    Upon removing the bridge between the contacts (drying the GEO), the graphic WET will no longer be displayed. The GEO will continue checking for Depth, until a dive is made or it reverts to the Watch Time screen after 2 hours.

  • Page 79: Norm No Decompression Dive Mode

    NORM NO DECOMPRESSION DIVE MODE When the Wet Activation feature is set ON, the GEO will enter the NORM No Decompression Dive Mode any time a descent is made to 5 FT (1.5 M) for 5 seconds. When the Wet Activation feature is set OFF, the GEO will not enter Dive Mode upon descent unless it is operating in one of the NORM Dive Computer modes (menus) at that time.
  • Page 80 NORM NO DECO DIVE ALT DISPLAY, information pro- vided includes (Fig. 71) - > Bar Graph representing O2 Accumulated with graphic O2BG, if FO2 is set for Nitrox. > Max Depth with MAX and FT (or M) icons. > FO2 Set Point with FO2 icon, if FO2 is set for Nitrox. >...

  • Page 81: No Deco Safety Stop

    NORM DIVE NO DECO SAFETY STOP Upon ascending to 5 FT (1.5 M) below the Safety Stop Depth set on any No Decompression dive in which Depth exceeded 30 FT (9 M), a short beep will be emitted and a Safety Stop at the Depth set will appear on the display with a countdown timer that begins at the Safety Stop Time set.
  • Page 82 NO DECO SAFETY STOP ALT 1 DISPLAY, information in- cludes (Fig. 74) > TLBG representing Nitrogen loading. > Graphics SAFE, STOP, and xxF or xxM (value of the Stop Depth set) scrolling at the top. > Current Depth with FT (or M) icon. >...

  • Page 83: Decompression Dive Mode

    DECOMPRESSION DIVE MODE The GEO is designed to help you by providing a representa- tion of how close you are to entering Decompression. Decompression Dive Mode activates when the theoretical No Decompression time and depth limits are exceeded. Upon Entry into DECO Mode, the Audible Alarm will sound, Fig.
  • Page 84 The amount of decompression Credit Time that you receive is dependent on Depth, with slightly less Credit given the deeper you are below the Stop Depth indicated. You should stay slightly deeper than the Required Stop Depth indicated until the next shallower Stop Depth appears. Then, you can slowly ascend to, but not shallower than that indicated Stop Depth.
  • Page 85 DECO STOP ALT 1 DISPLAY, information provided includes (Fig. 79) - > TLBG, all 5 segments indicating DECO. > Graphic message DECO > STOP > xxF (or xxM), scrolling, indicating the Stop Depth required. > Current Depth with FT (or M) icon. >...

  • Page 86: Violation Modes

    Alarm is acknowledged/silenced, then the message DOWN > TO > xxF (or xxM) will scroll. If you descend below the required Stop Depth before 5 minutes have elapsed, the GEO will continue to function in Decompres- Fig. 82 - CONDITIONAL sion Dive Mode.

  • Page 87: Delayed Violation #1

    Deco Stop Depths and Time will decrease toward zero. The TLBG will recede into the No Deco Zone and the GEO will revert to the No Deco Dive Mode. NOTE: Upon entry into the following Delayed Violation Modes, the Audible Alarm will sound and the red LED will flash even if Set OFF.

  • Page 88: Delayed Violation #2

    DELAYED VIOLATION #2 (Fig. 84) The GEO cannot calculate Decompression times for Stop Depths much greater than 60 FT (18 M) and offers no indica- tion of how much time spent underwater would result in the need for a greater Stop Depth.

  • Page 89: Immediate Violation And Violation Gauge Mode

    This situation would be preceded by entering Delayed Violation Mode #2. The GEO would then operate in Violation Gauge Mode during the remainder of that dive and for 24 hours after surfacing. Violation Gauge Mode turns the GEO into a digital instrument without any decompression or oxygen monitoring functions.
  • Page 90 The GEO will also enter an Immediate Violation Mode (Viola- tion Gauge Mode) 5 minutes after surfacing from a dive in which a Delayed Violation occurred. Violation Gauge Mode on the Surface does not allow access to the SET F, PLAN, FLY, and SAT features/screens.

  • Page 91: High Po2

    HIGH PO2 When partial pressure of oxygen (PO2) becomes equal to, or greater than, 0.20 ATA less than the PO2 Alarm Set Point (a SET A Group setting); the Audible Alarm will sound, the red LED warning light will flash, and the message HIGH > PO2 will scroll until the Alarm is acknowledged/silenced.

  • Page 92: High Oxygen Accumulation

    HIGH OXYGEN ACCUMULATION The O2 Bar Graph displays either oxygen accumulated during that nitrox dive, or during the repetitive nitrox dives you conduct during that 24 hour period, whichever of the two is greater at that time. The O2 Bar Graph allows you to monitor how close you are coming to the limits of oxygen exposure.

  • Page 93: Summary Of Warning And Alarm Messages

    SUMMARY OF NORM/GAUG WARNING AND ALARM MESSAGES MESSAGE MEANING DECO > STOP > xxF (M) Entry into Decompression Mode. DOWN > TO > xxF (M) Above a Required Decompression Stop Depth. DECO > STOP > 60F (18M) Deco Stop greater than 60 FT (18 M) required. UP >...
  • Page 94 (This page intentionally left blank.)

  • Page 95: Norm Post Dive Modes

    WARNING: Prior to diving with the GEO, you must also read and understand the Oceanic Dive Computer Safety and Reference Manual, Doc. No. 12-2262, which provides Important Warnings and Safety Recommendations as well as general product information. NORM POST DIVE MODES...

  • Page 96: Transition Period

    POST DIVE SURFACE MODE When you ascend to 2 FT (0.6 M), the GEO will enter Surface Mode and begin counting your Surface Interval. TRANSITION PERIOD 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.

  • Page 97: After The Transition Period

    To view that dive's Log during the Transition Period - • Press/release the A button (< 2 seconds) to access the Preview screen (Fig. 91). • Press/release the S button (< 2 seconds) to view the Log Data 1 screen. •...
  • Page 98 To activate the Backlight - • Press the L button at any time. To access NORM PLAN Mode (refer to page 59) - • Press/release the A button. The Planning Sequence now displays adjusted No Decompression Limits based on residual nitrogen and accumulated oxygen calculated to be remaining from the previous dives.

  • Page 99: Uploading Settings And Downloading Data

    UPLOADING SETTINGS AND DOWNLOADING DATA The GEO 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 the OceanLog Interface Cable. A USB Driver is provided on the program CD as part of the Interface System.

  • Page 100: Pc Compatibility Requirements

    • 20MB of available hard drive storage • Mouse • CD Rom drive • Printer For software updates, refer to the Oceanic web site. www.OceanicWorldwide.com For support, call OceanLog Support toll free at - (866) 732-7877, 8 Am to 5 Pm Pacific time.

  • Page 101: Gauge Operating Mode

    WARNING: Prior to diving with the GEO, you must also read and understand the Oceanic Dive Computer Safety and Reference Manual, Doc. No. 12-2262, which provides Important Warnings and Safety Recommendations as well as general product information. GAUGE OPERATING MODE...

  • Page 102: Gauge Mode

    GAUGE MODE When Gauge Mode (GAUG) is selected as the Dive Computer Operating Mode, the GEO will operate as a Digital Depth Gauge/Timer without performing nitrogen and oxygen calculations. • To access GAUG Operating Mode while Watch MAIN TIME is displayed, press the M button 2 times (2 seconds each time);...
  • Page 103 • Press the L button to activate the Backlight. When GAUG Operating Mode is selected and upon descend- ing to 5 FT (1.5 M) for 5 seconds, the GEO will enter GAUG DIVE Mode. NOTE: Once a dive is made in GAUG Mode,...
  • Page 104 GAUG DIVE ALT DISPLAY, information provided includes (Fig. 95) - > Graphic GAUG. > Max Depth with MAX and FT (or M) icons. > Elapsed Dive Time (hr:min) with DIVE and TIME icons. • Press/release the A button to access the Secondary display.

  • Page 105: Free Dive Operating Mode

    WARNING: Prior to diving with the GEO, you must also read and understand the Oceanic Dive Computer Safety and Reference Manual, Doc. No. 12-2262, which provides Important Warnings and Safety Recommendations as well as general product information. FREE DIVE OPERATING MODE...

  • Page 106: Free Surface Mode

    FREE DIVE MODE When FREE (Free Dive Mode) is selected as the Operating Mode, the GEO will operate as a Digital Depth Gauge with select features. Nitrogen calculations are based upon a default FO2 of AIR and the amount remaining during 24 hours is carried over between FREE and NORM Operating Modes.
  • Page 107 • Press the L button to activate the Backlight. FREE Mode uses the • Depress the A button for 2 seconds to access the FREE NORM/GAUG settings for - SURF ALT Display from which you can access the Secondary Display . >>...

  • Page 108: Free Cdt (Countdown Timer)

    The display will revert to the FREE SURF MAIN screen after 5 seconds if the A button is not pressed. SECONDARY DISPLAY, information includes (Fig. 90) - > Day of the Week graphic (MON, TUE, etc.) > Time of Day (hr:min). This will be the Watch Time selected (MAIN or ALTERNATE).
  • Page 109 • Press/release the S button momentarily (< 2 seconds) to The Set Point for toggle between ON and OFF. the Watch CDT > If a Time has been set, a toggle from OFF to ON will Start does not affect the CD Timer indicated by the colon flashing.

  • Page 110: Set Free Cdt

    NOTE: During a dive, the CDT can be turned OFF (stopped) and ON (started), but not Set. SET FREE CDT STATUS DISPLAY (SURFACE ONLY), information provided includes (Fig. 102) - > Graphic TIMR, solid. > Timer setting (min:sec) with the TIME icon, colon solid, MINUTE Set Point flashing.

  • Page 111: Free Edt (Elapsed Dive Time) Alarm

    ON, the Alarm will sound 3 short beeps and the message TIME will be displayed momentarily every 30 seconds while the GEO is operating underwater in FREE DIVE Mode. • Depressing both the A and S buttons simultaneously for 2...

  • Page 112: Free Depth Alarms (Fda)

    2 minutes, the display will revert to the FREE SURF MAIN screen. FREE DEPTH ALARMS (FDA) The GEO features 3 FREE DEPTH Alarms that can be Set at progressively deeper Depths and turned OFF/ON. > If Alarm 1 is set OFF, then Alarms 2 and 3 will be disabled.

  • Page 113: Set Fda1

    SET FREE DEPTH ALARM 1 (FDA1) DISPLAY, information The Set Point for provided includes (Fig. 104) - the NORM/ > Graphic FDA1. GAUG Depth > Depth Alarm value, flashing if ON is displayed, with MAX Alarm does not affect the FREE and FT (or M) icons.

  • Page 114: Set Fda2

    • Depressing the M button for 2 seconds, or if no button is The range of pressed during a period of 2 minutes, the display will available FDA 2 revert the FREE SURF MAIN screen. Set Points begins at the next FT/M value greater SET FREE DEPTH ALARM 2 (FDA2) DISPLAY, information than the FDA 1...

  • Page 115: Set Fda3

    • Pressing and holding the S button will scroll through the The range of Set Points at a rate of 4 Set Points per second until available FDA 3 released. Set Points begins • Pressing the A button momentarily (< 2 sec) will accept the at the next FT/M value greater Depth Setting and advance to SET FDA 3.

  • Page 116: Free Dive Mode

    • Pressing/releasing the S button momentarily and repeatedly (< 2 seconds each time) will step through the Set Points from 50 to 330 FT (12 to 100 M) in increments of 10 FT (1 M) at a rate of 1 Set Point per press of the button.

  • Page 117: Free Dive Cdt

    FREE DIVE CDT STATUS DISPLAY, information provided in- cludes - > Graphic TIMR > Remaining Countdown time (hr:min:sec) with the TIME icon; and colon flashing if ON and a CD is in progress, 0:00 with the colon flashing if ON and no time is remaining.
  • Page 118 FREE CDT (Count Down Timer) Alert When the FREE CDT decreases to 0:00 (min:sec), 3 short beeps will sound 3 times and the message TIMR will appear on the display 3 times momentarily (Fig. 110), then revert to the message FREE. FREE DEPTH Alarm(s) When Depth reaches the FREE DEPTH ALARM 1 Set Point Fig.
  • Page 119 FREE TLBG (Tissue Loading Bar Graph) Alarm While diving in FREE DIVE Mode, nitrogen accumulation from the FREE Dives and any previous NORM SCUBA Dives conducted within 24 hours is displayed as the TLBG. When Nitrogen Loading increases to the Caution level indi- cated by 4 segments displayed as the TLBG, the UP Arrow appears solid, 3 short beeps will sound 3 times, the red LED Fig.
  • Page 120 The mathematical model currently used in the GEO is based on no decompres- sion/decompression multilevel repetitive dive schedules. This algorithm does not take into account the physiological changes associated with the high pressures that competitive type Free diving can expose a diver to.

  • Page 121: Reference

    WARNING: Prior to diving with the GEO, you must also read and understand the Oceanic Dive Computer Safety and Reference Manual, Doc. No. 12-2262, which provides Important Warnings and Safety Recommendations as well as general product information. REFERENCE...

  • Page 122: Care And Cleaning

    Instrument Lens Protector. Small scratches will naturally disappear underwater. • Soak and rinse the GEO 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. 116a), PC Interface Data Port (Fig.

  • Page 123: Battery Replacement

    To Obtain Service: Take your GEO to an Authorized Oceanic Dealer or send it to the nearest Oceanic Regional Distributor Facility (page 173). To return your GEO to Oceanic: • Record all dive data in the Log and/or download the data in memory. All data will be erased during factory service.
  • Page 124 If there is any sign of moisture in the (using tool) GEO, DO NOT attempt to use it for diving (NORM, GAUG, or FREE) until it receives proper service by the Oceanic factory or an Authorized Regional Distributor.
  • Page 125 • Inspect the Buttons, Lens, and Housing to ensure they are not cracked or damaged. WARNING: If damage or corrosion is found, return your GEO to an Authorized Oceanic Dealer, and DO NOT attempt to use it until it has received factory prescribed service.
  • Page 126 • Closely examine the inside of the Battery Compartment for any signs of corrosion indicating entrance of moisture into the unit. • If corrosion is found, return the GEO to an Authorized Fig. 120 - BATTERY INSTALLATION Oceanic Dealer, and DO NOT attempt to use it until it has received factory service.
  • Page 127 • If any portions of the display are missing or appear dim, or if a Low Battery Condition is indicated, return your GEO to an Authorized Oceanic Dealer for a complete evaluation before attempting to use it. Fig. 123 - BATTERY...

  • Page 128: Altitude Sensing And Adjustment

    1 foot (30 cm) of each other to record that Ambient Pressure as the current ALTITUDE. The Mathematical Model in the GEO accounts for the reduced No Decompression dive Time available based on National Oceanic and Atmospheric Administration (NOAA) guidelines.

  • Page 129: No Decompression Limits At Altitude

    14,000 feet (4,270 meters). If the Conservative Factor is set ON while at Sea Level, calculations are based upon an Altitude of 3,000 feet. The GEO will not function as a Dive Computer above 14,000 feet (4,270 meters). IMPERIAL NO DECOMPRESSION LIMITS (HOURS:MINUTES) AT ALTITUDE Altitude 0`...

  • Page 130: Oxygen Exposure Limits

    METRIC NO DECOMPRESSION LIMITS (HOURS:MINUTES) AT ALTITUDE Altitude 611` 916` 1221` 1526` 1831` 2136` 2441` 2746` 3051` 3356` 3661` 3966` (meters) 610` 915` 1220` 1525` 1830` 2135` 2440` 2745` 3050` 3355` 3660` 3965` 4270` Depth (meters) 4:43 3:51 3:37 3:24 3:10 2:58 2:48...

  • Page 131: Specifications

    SPECIFICATIONS CAN BE USED AS WATCH MODES • Watch • Main Time (home) • Dive Computer (Air or Nitrox) > Set Time/Date • Digital Depth Gauge/Timer • Alternate Time (remote location) • Free Dive activity > Set Alternate Time (hour differential) •...
  • Page 132 SPECIFICATIONS (CONTINUED) • Set U Group (Utilities): Factory Settings: Wet Activation (On/Off) Units (Imperial / Metric) Imperial Safety Stop Time, Depth (Off/3/5 minutes, 10/15/20 FT, 3/4/5/6 M) 3:00 (min:) Conservative Factor (On/Off) Backlight Duration (0/5/10 seconds) :05 (sec) Sampling Rate (2/15/30/60 seconds) 15 (sec) •...
  • Page 133 SPECIFICATIONS (CONTINUED) FREE Dive Displays: • Main (default) - Mode graphic FREE, Elapsed Dive Time (min:sec), Dive Time Remaining (hr:min), Depth • CDT Status - graphic TIMR (Timer), Timer Setting (On/Off), Countdown Time Remaining (min:sec) • Secondary - Day of Week, Temperature, Time of Day (hr:min) NUMERIC DISPLAYS: Range: Resolution:...
  • Page 134 SPECIFICATIONS (CONTINUED) BAR GRAPH Tissue Loading Bar Graph: segments Oxygen (O2) Bar Graph: segments • No Decompression zone 1 to 4 • Normal zone 1 to 4 • Decompression zone 5 (all) • Danger zone 5 (all) OPERATIONAL PERFORMANCE Function: Accuracy: •...
  • Page 135 SPECIFICATIONS (CONTINUED) Power: • Battery 1 - 3 vdc, CR2430, Lithium battery • Shelf life Up to 7 years (when shipped from factory in Deep Sleep mode) • Replacement User replaceable (annual recommended) • Use Life 1 year or 300 dive hours if 2 - 1 hour dives per dive day Battery Indicator: •...
  • Page 136 Diving trainer. It is imperative that the physiological affects be understood and the diver is physically prepared. • If your GEO stops working for any reason while operating as a Dive Computer, it is important that you have anticipated this possibility and are prepared for it. This is an important...

  • Page 137: Error (Reset During A Dive)

    ERROR (RESET DURING A DIVE) If for any reason, the GEO shuts Off then turns On again for any reason during any Dive, the message ERR (Error) will be displayed with the Up Arrow and current Depth (Fig. 124). If this occurs, it is highly recommended that you terminate the dive and begin a safe ascent to the surface.

  • Page 138: Inspection / Service Record

    INSPECTION / SERVICE RECORD Serial Number: _________________________________ Firmware Revision: _________________________________ Date of Purchase: ____________ Purchased from : __________________________ Below to be filled in by an Authorized Oceanic Dealer: Date Service Performed Dealer / Technician...

  • Page 139: Oceanic Worldwide

    2002 Davis Street San Leandro, CA 94577 Tel: 510/562-0500 Fax: 510/569-5404 Web site: http://www.OceanicWorldwide.com service@oceanicusa.com Oceanic Central/North Europe Oceanic Diving Australia Pty. Ltd Wendelstein, Germany Sorrento, Victoria, Australia Tel: 09129-9099780 Fax: 09129-9099789 Tel: 61-3-5984-4770 Fax: 61-3-5984-4307 E-mail: office@oceanic.de E-mail: sales@oceanicaus.com.au Oceanic South Europe Oceanic Asia-Pacific Pte.
  • Page 140 Operating Manual Doc. No. 12-2734-r03 (3/6/09) (cover art to be placed on front/back is provided separately)

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