Pay special attention to items marked with this Warning symbol.
LIMITED TWO-YEAR WARRANTY
For details, refer to the Product Warranty Registration Card provided. www.OceanicWorldwide.com Register on-line at

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 Oceanic / 2002 Design.
GEO Operating Manual, Doc. No. 12-Design, San Leandro, CA 2006 94577
TRADEMARK, TRADE NAME, AND SERVICE MARK NOTICE
Oceanic, the Oceanic logotype, the Oceanic 'O' symbol, GEO, the GEO logo, Diver Replaceable Batteries, Graphic Diver Interface, Tissue Loading Bar Graph (TLBG), Pre Dive Planning Sequence (PDPS), Set Point, Control Console, and OceanLog are all registered and unregistered trademarks , trade names, and service marks of Oceanic. All rights are reserved.

PATENT NOTICE

U.S. Patents have been issued, or applied for, to protect the following design features: Data Sensing and Processing Device (U.S. Patent no. 4,882,678). Other patents pending.
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. of experiences. This model is merely a way to apply a limited set of data to a large range
The GEO dive computer model is based upon the latest research and experi-
ments in decompression theory.
Still, using the GEO, just as using the U.S. Navy (or
other) No Decompression Tables, is no guarantee of avoiding decompression sickness, i.e. the bends. Every divers physiology is different, and can even vary from
day to day. No machine can predict how your body will react to a particular dive profile.
NOTICE STORAGE and INITIAL ACTIVATION
GEO Watch/Dive Computers are placed in a Deep Sleep mode prior to being shipped from the factory. The intent is to extend storage life of the Battery for up

to 7 years, before the unit is initially placed in service.
In this mode, Date and Time are updated as they normally would be. they are not displayed.

However,

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.
To wake the GEO up from Deep Sleep mode, simultaneously depress the upper/ right (S) and lower/left (A) buttons for 2 to 3 seconds until the display comes full ON displaying the MAIN TIME screen, then release them.
Once the GEO is brought out of the Deep Sleep mode, it
can only be placed back in it by the factory.

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 AND GENERAL FEATURES AND DISPLAYS

INTRODUCTION

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. No. 12-2262) provided with your GEO. It contains
information that you must become familiar with prior to diving with your GEO.
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.
INTERACTIVE CONTROL CONSOLE
The Interactive Control Console consists of four Control Buttons that allow you to select mode options and access specific information. They are also used to link
the Transmitter(s), enter Settings, activate the Backlight, and acknowledge the Audible Alarm.
Throughout this manual they will be referred to as the M, S, L, and A buttons.
Upper/Left - Mode (M) button Upper/Right - Select (S) button Lower/Right - Light (L) button Lower/Left - Advance (A) button

> Time of Day (hours, minutes, seconds) (Fig. 7b)
Pressing and releasing the M button momentarily and repeatedly (< 2 seconds each time) will step through the Main Modes.
Pressing and releasing the S button (< 2 seconds) will silence and acknowledge the Daily Alarm (if set On and it sounds).
Pressing the L button will activate the Backlight. Pressing both the A and S buttons simultaneously for 2 seconds will access the SET MAIN TIME Mode.
Fig. 7 - MAIN TIME (May 31)

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: Date.

MAIN TIME must be selected as the
Local Default Time in order to set the Time and
Sequence of Time/Date settings: Hour Format > Hour > Minute > Year > Month > Day
Day of the Week is set automatically when the Date is set.
Depressing and holding the M button at any time for 2 seconds or if no button is pressed during a period of 2 minutes, the unit will revert to the MAIN TIME screen.
While the MAIN TIME screen is being displayed, pressing the A and S buttons simultaneously for 2 seconds will access the Set Hour Format screen displaying the graphic HOUR, symbol TIME, and the Hour Format Set Point 12 or 24 flashing (Fig. 8).
Pressing and releasing the S button momentarily (< 2 seconds) will toggle the setting between 12 and 24.

Fig. 8 - SET HOUR FORMAT

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.

Set Hour and Minute

The graphic A (= Am) or P (= Pm) is displayed when Time is in 12 Hour Format.

Fig. 9 - SET HOUR

Depressing and holding the S button while the HOUR Set Point is flashing will scroll through the Set Points in 1 Hour increments at a rate of 4 per second from 12: A to 11: P (or 0: to 23: if set for 24 Hour Format).

Pressing and releasing the A button momentarily (< 2 seconds) will save the Hour Set Point and/or advance to SET MINUTE with the MINUTE Set Point flashing (Fig. 10).
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 SET DATE screen with the YEAR Set Point flashing.

Fig. 10 - SET MINUTES

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

Fig. 11 - SET YEAR

increments at a rate of 4 per second from 2006 to 2049 (with leap year corrections). Pressing and releasing the A button momentarily (< 2 sec) will save the Year Set Point and/or advance to SET
MONTH with the Set Point flashing and the graphic

MNTH (Fig. 12).

The YEAR will not be displayed in any
Mode other than SET DATE. The DATE will reset to 1.when the Battery is replaced.

Fig. 12 - SET MONTH

Depressing and holding the S button while the MONTH Set Point is flashing will scroll through the Set Points in 1 month increments at a rate of 4 per second from 1 to 12.
Pressing and releasing the A button momentarily (< 2 seconds) will save the Month Set Point and/or advance to
SET DAY with the Set Point flashing and the graphic DAY
(Fig. 13). Depressing and holding the S button while the DAY Set Point is flashing will scroll through the Set Points in one day (01) increments at a rate of 4 per second from 1 to 31

Fig. 13 - SET DAY

(or the highest Day for the Month set).
Pressing and releasing the A button momentarily (< 2 seconds) will save the Set Point and/or advance to the MAIN TIME screen.
Main Time/Date can also be set using the PC Settings Upload program which is on the OceanLog software CD. Prior to shipment from the factory, any error of the Main Time is determined and corrected.
DAY of the WEEK is set automatically
based upon the Date that has been set.

ALTERNATE TIME

Pressing and releasing the M button momentarily (< 2 seconds) while the MAIN TIME screen is displayed will access the ALTERNATE TIME screen.
Information provided includes (Fig. 14): > Tissue Loading Bar Graph, if any after NORM/FREE dives.

Fig. 22 - SET DAILY ALARM
Depressing and holding the S button while the MINUTE Set Point is flashing will scroll through the Set Points in 1 minute :59. increments at a rate of 4 per second from :00 to
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.

N SI LE B

DIVE COMPUTER FEATURES AND DISPLAYS

BAR GRAPH

The GEO features one shared Bar Graph that represents either nitrogen loading, or when accessed, oxygen accumulation. default, the Bar Graph (Fig. 23a), referred to as the Tissue Loading Bar Graph (TLBG), represents your relative no decompression or decompression status. By

Fig. 23 - TLBG

As your Depth and Elapsed Dive Time increase, segments will add to the TLBG, and as you ascend to shallower depths, the segments of the TLBG will begin to recede, indicating that additional no decompression time is allowed.
The Tissue Loading Bar Graph monitors 12 different nitrogen compartments simultaneously and displays the one that is in control of your dive. It consists of 5 segments, the left 4
represent 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. graphic O2BG will appear as an indication (Fig. 24a). The
Regardless of which parameter the Bar Graph is representing at the time, nitrogen (if NORM or FREE) and oxygen (if NORM) calculations will continue to be performed in the background.

Fig. 24 - O2BG

Displays associated with oxygen and the O2 Bar Graph will be displayed if FO2 has been set at a value other than 'Air' (e.g., a numerical value) and the Alternate screen that displays oxygen related data is accessed.
When the oxygen data screen is accessed during a NORM dive, the Bar Graph will show the maximum of either per dive accumulated oxygen or 24 hour period accumulated oxygen.
As your oxygen exposure (accumulation) increases during a NORM dive, segments will add to the O2 Bar Graph, and as saturation decreases, it will begin to recede, indicating that additional exposure is allowed for that dive and 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. 25).

FREE Mode Sampling Rate is fixed at a 1 second interval and is not affected by the SET U setting.

> >

SET U Settings remain at the values set until changed. Depressing the A and S buttons simultaneously for 6 seconds while the NORM or GAUG SURF MAIN screen is displayed, will access SET U identified by the graphic SETU (Fig. 47).
Pressing and releasing the A button momentarily (< 2 seconds) while SET U is displayed will advance to SET WET ACTIVATION with the Set Point flashing.

Fig. 47 - SET U

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 UNITS screen with the Set Point flashing.
Fig. 47 - SET WET ACTIVATION
Pressing and releasing the A button momentarily and repeatedly (< 2 seconds each time) will step through the other SET U screens.
Depressing the A and S buttons simultaneously for 2 seconds will save the setting and revert back to the SET U screen.
SET UNITS, information includes (Fig. 48):
> Graphic UNIT > Set Point, FT icon and F graphic (or M icon and C graphic) flashing, with degrees icon.
Pressing and releasing the S button will toggle between Imperial (FT, F) and Metric (M, C).

Fig. 48 - SET UNITS

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.
SET NORM SAFETY STOP information includes (Fig. 49):
> > > Graphic SAFE Safety Stop Depth Set Point with FT (or M) icon. Safety Stop Time Set Point (min:sec) flashing, with STOP and TIME icons.
Pressing and releasing the S button momentarily (< 2 seconds each time) will step through the Stop Time Set Points of OFF, 3:00, and 5:00 (min:sec).
Pressing and releasing the A button momentarily (< 2 seconds) will save the Stop Time setting and the Stop Depth Set Point will flash, or if Stop Time is set OFF advance to the SET CONS (Conservative Factor) screen with the Set Point flashing.
Pressing and releasing the S button momentarily (< 2 seconds each time) will step through the Stop Depth Set Points of 10, 15, and 20 FT (or 3, 4, 5, and 6 M).
Fig. 49 - SET SAFETY STOP
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.

NORM SURF MAIN.

TIME TO FLY, information includes (Fig. 56):
> Graphic FLY > Countdown Time (hr:min) with TIME icon. > Battery icon if a Low Battery Warning Condition exists,

flashing if Too Low.

Fig. 56 - TIME TO FLY
Pressing and releasing the A button momentarily (< 2 to SAT MODE.

seconds) will advance

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.

DESAT MODE

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 NORM (or FREE) dive, counting down from 23:50 max to 0:00 (hr:min).
When the Countdown reaches 0:00, which will generally occur prior to the FLY countdown reaching 0:00, the SAT screen remains in the sequence of accessible screens displaying 0:00 until the FLY counter shuts the Dive Computer operations Off 24 hours after a last dive. > The SAT screen is not displayed after a Violation Dive. > > DESAT Times greater than 24 hours will be displayed as 23: - In the event that DESAT Time still remains at the end of the 24 hours countdown, the added time will be zeroed. > Ten minutes after surfacing from a dive, operation reverts to the Watch Mode Time screen at which time the DESAT Countdown continues in the background. Access to the SAT screen can then be gained by first accessing
the NORM SURF MAIN screen.
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):
> Graphic SAT > Countdown Time (hr:min) with TIME icon. > Battery icon, if a Low Battery Warning Condition exists, flashing if Too Low

After the Alarm is silenced, the graphic message UP > HIGH > PO2 will scroll.
If PO2 continues to increase, the value displayed will increase toward a maximum value of 5.00 ATA in increments of 0.01 ATA.
When PO2 reaches the PO2 Alarm Set Point, the red LED warning light will flash and the Audible Alarm will sound again. > The graphic PO2 and UP Arrow will flash as a warning until PO2 decreases below the Alarm Set Point. > The message UP > HIGH > PO2 will continue to scroll.
The value of PO2 can be viewed by accessing the ALT Display by pressing/releasing the A button.
The ALT will revert to the MAIN Display after 5 seconds.

Fig. 88 - HIGH PO2 MAIN

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.
If the theoretical amount of oxygen accumulated equals, or exceeds, the limit for a single exposure, or the exposure limit for a 24 hour period (300 OTU), Oxygen Dive Time Remaining becomes 0:00 (hr:min), the graphic O2BG appears and the full O2 Bar Graph and UP Arrow will be displayed flashing (Fig. 89).
The Audible Alarm will sound, the red LED will flash, and the message HIGH > O2 will scroll at the top of the display. When the Alarm is acknowledged/silenced, the message UP > HIGH > O2 will scroll until the level of oxygen decreases below the limit.
Press/release the A button to view the Alternate, then Secondary Displays.
They will revert to the MAIN Display after 5 seconds.
Upon surfacing, operation will lock in to NORM Mode until the O2BG recedes to 4 segments. Access to Watch Mode is

Fig. 89 - HIGH O2 MAIN

allowed but access to GAUG and FREE is blocked.
SUMMARY OF NORM/GAUG WARNING AND ALARM MESSAGES
MESSAGE DECO > STOP > xxF (M) MEANING 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 > HIGH > PO2

High PO2 alarm while in No Deco Mode.

HIGH > PO2

High PO2 alarm while in Deco Mode.

UP > HIGH > O2

High O2 alarm.

TOO > DEEP

Depth alarm.

UP > VIOL

Deco Stop greater than 70 FT (21 M) required.

Press/release the A button to access the GAUG ALT display.

Fig. 94 - GAUG DIVE MAIN

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.

Fig. 95 - GAUG DIVE ALT

The display will revert to the MAIN Display after 5 seconds unless the A button is pressed/released.
SECONDARY DISPLAY, information includes (Fig. 96) > > Day of the Week graphic (MON, TUE, etc.) Time of Day (hr:min). This will be the Watch Time selected

Fig. 96 - SECONDARY

FREE DIVE OPERATING

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.
To access FREE Operating Mode while Watch MAIN TIME is displayed, press the M button 3 times (2 seconds each time), or while the GAUG SURF MAIN screen is displayed (and no GAUG dive was made), press the M button 1 time for 2 seconds. The graphic FREE will flash indicating that FREE can be
selected as the Operating Dive Mode. To select FREE for diving, press/release the M button while the FREE graphic is flashing. When the graphic becomes solid, FREE Mode is selected for the
type of dives to be conducted.
WATCH TIME > NORM SURF > GAUG SURF > FREE SURF
FREE SURF MAIN DISPLAY, information includes (Fig. 97) > > TLBG representing nitrogen loading, if any. Graphic FREE alternating with the Altitude Level graphic SEA (or EL 2 through EL13) and graphic WET (if wet), each 3 seconds On then 1/4 second Off. > Surface Interval Time (min:sec up to 59:59, then hr:min) with SURF and TIME icons. > Battery icon if a Low Battery Warning Condition exists, flashing if Too Low.

Fig. 97 - FREE SURF MAIN

Total number of repetitive FREE Dives conducted in that series with DIVE icon.
Press the L button to activate the Backlight. Depress the A button for 2 seconds to access the FREE SURF ALT Display from which you can access the Secondary Display.
FREE Mode uses the NORM/GAUG settings for >> Time/Date >> Wet Activation >> Units >> Conservative Factor

Press/release the A button momentarily (< 2 seconds) to access the FREE SURF CDT (Countdown Timer) Status Display allowing you to Set/Start/Stop the CDT.
Depress both the A and S buttons simultaneously for 2 seconds to access the SET FREE EDT (Elapsed Dive Time) ALARM Display from which you can then access the SET FREE DEPTH ALARM 1, 2, and 3 Displays.
FREE SURF ALT DISPLAY, information includes (Fig. 98) > Graphic LAST, indicating that information relates to the last FREE dive conducted. > Maximum Depth of the FREE dive previously made while still in FREE MODE with MAX and FT (or M) icons. > Battery icon if a Low Battery Warning Condition exists, flashing if Too Low. > Elapsed Dive Time (min:sec) of the FREE dive previously made while still in FREE MODE with DIVE and TIME icons. Resets to 0:00 after 24 hours.
Press the L button to activate the Backlight. Press/release the A button momentarily (< 2 seconds) to access the Secondary Display.

Fig. 98 - FREE SURF ALT

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).

Fig. 99 - SECONDARY
Temperature with degrees icon and graphic F (or C).
FREE MODE CDT (COUNTDOWN TIMER)
Press/release the A button momentarily (< 2 seconds) while viewing the FREE SURF MAIN screen to access the FREE SURF CDT STATUS screen.
Fig. 100 - CDT ON/ RUNNING
FREE SURF CDT STATUS DISPLAY, information provided includes (Fig. 100/101) > > Graphic TIMR Remaining Countdown time (min:sec) with the colon flashing and the TIME icon, if ON and a CD is in progress. > 0:00 will be displayed, if the CD Timer is ON and no time is remaining. > If the CD Timer is OFF the CD Time (min:sec) previously , set will be displayed.

Fig. 101 - CDT OFF

Graphic OFF (or ON), flashing
Press/release the S button momentarily (< 2 seconds) to toggle between ON and OFF.
The Set Point for the Watch CDT
If a Time has been set, a toggle from OFF to ON will Start the CD Timer indicated by the colon flashing.
does not affect the FREE CDT.
An ON/OFF toggle is prevented when S is operated to acknowledge/silence the Watch Daily Alarm.

Fig. 104 - SET FREE DEPTH ALARM 1
The range of available FDA 2 Set Points begins at the next FT/M value greater than the FDA 1 Alarm Set Point.
Depressing the M button for 2 seconds, or if no button is pressed during a period of 2 minutes, the display will revert the FREE SURF MAIN screen.
SET FREE DEPTH ALARM 2 (FDA2) DISPLAY, information
provided includes (Fig. 105) > > Graphic FDA2. Depth alarm value, flashing if ON is displayed, with MAX and FT (or M) icons. > Set Point ON or OFF flashing. ,
If OFF is selected/accepted, Set FDA 3 will be bypassed and the display will revert to the FREE SURF MAIN screen.
Pressing/releasing the S button momentarily and repeatedly (< 2 seconds each time) will step through the Set Points from 40 to 330 FT (11 to 100 M) in increments of 10 FT (1 M) at a rate of 1 Set Point per press of the button.
Fig. 105 - SET FREE DEPTH ALARM 2
The range of available FDA 3 Set Points begins at the next FT/M value greater than the FDA 2 Alarm Set Point.
Pressing the A button momentarily (< 2 sec) will accept the Depth Setting and advance to SET FDA 3.
SET FREE DEPTH ALARM 3 (FDA3) DISPLAY, information
provided includes (Fig. 106) > > Graphic FDA3. Depth alarm value, flashing if ON is displayed, with MAX and FT (or M) icons. > Set Point ON or OFF, flashing.
If OFF is selected/accepted, the display will revert to the FREE SURF MAIN screen.
Fig. 106 - SET FREE DEPTH ALARM 3
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.
Pressing the A button momentarily (< 2 sec) will accept the Depth Setting and the display will revert the FREE SURF MAIN screen.
FREE DIVE MAIN DISPLAY (Default), information provided
includes (Fig. 135) > TLBG, if any Nitrogen is remaining from previous NORM or FREE Dives conducted within the previous 24 hours. > > > Graphic FREE Current Depth with FT (or M) icon. No Deco Dive Time remaining (hr:min) with TIME and NDC icons. > Elapsed Dive Time (min:sec) with DIVE and TIME icons.
Press/release the A button momentarily (< 2 seconds) to
Fig. 107 - FREE DIVE MAIN
access the FREE CDT (Count Down Timer) STATUS screen. Press the L button to activate the Backlight.
FREE DIVE CDT STATUS DISPLAY, information provided includes > > 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. If OFF, the CD Time previously set will be

acidic bath (50% white vinegar/50% fresh water). removal from the bath, place the GEO under gently running water and towel dry before storing.
Transport your GEO system cool, dry, and protected.

INSPECTIONS AND SERVICE

Your GEO should be inspected annually by an Authorized Oceanic 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).
Oceanic recommends that you continue to have an inspection

Fig. 116 - CASE BACK

performed every year to ensure it is working properly.
costs of annual inspections are not covered under the terms of the 2 year limited warranty.

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. data will be erased during factory service. Package it using a protective cushioning material. Include a legible note stating the specific reason for return, your name, address, daytime phone number, serial number(s), and a copy of your original sales receipt and Warranty Registration Card. Send freight prepaid and insured using a traceable method to the nearest Oceanic Regional Service Facility, or to Oceanic USA. If shipping to Oceanic USA, obtain an RA (Return Authorization) number by contacting Oceanic at 510/562-0500 or send an e-mail to service@oceanicusa.com. Non-warranty service must be prepaid. COD is not accepted. All
Additional information is available at the Oceanic web site OceanicWorldwide.com
BATTERY REPLACEMENT NOTE: The procedures that follow must be closely adhered to.
Damage due to improper Battery replacement is not covered by the 2 year warranty.
The Battery Compartment should only be opened in a dry and clean environment with extreme care taken to prevent the entrance of moisture or dust.
As an additional precautionary measure to prevent formation of moisture in the Battery Compartment, it is recommended that the Battery be changed in an environment equivalent to the local outdoor temperature and humidity (e.g., do not change the Battery in an air conditioned environment then take it outside during a hot sunny day).
Fig. 117 - BATTERY HATCH REMOVAL (using tool)
Inspect the Buttons, Lens, and Housing to ensure they are not cracked or damaged. If there is any sign of moisture in the
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.

Hot Swap

If the new Battery can be inserted within 8 seconds after the old one is removed (referred to as a Hot Swap), settings and Ni-O2 calculations for repetitive dives will be retained.

Factory Settings: On Imperial 3:00 (min:) Off :05 (sec) 15 (sec) actual
NORM No Decompression Dive Displays: Main (default) - TLBG, Elapsed Dive Time (hr:min), Dive Time Remaining (hr:min), Current Depth Alternate - O2BG, Max Depth, Current PO2, FO2 Set Point Secondary - Day of Week, Temperature, Time of Day (hr:min) Safety Stop Main (default) - TLBG, Stop Depth, Stop Time (min:sec), Dive Time Remaining (hr:min), Depth NORM Decompression Dive Displays: Main (default) - TLBG, Stop Depth, Stop Time (hr:min), Total Ascent Time (hr:min), Current Depth Alternate #1 - TLBG, Stop Depth, Elapsed Dive Time (hr:min), Total Ascent Time (hr:min), Current Depth Alternate #2 - O2BG, Max Depth, Current PO2, FO2 Set Point Secondary - Day of Week, Temperature, Time of Day (hr:min) NORM Violation Modes (displays similar to Deco) - Conditional, Delayed, and Immediate/Violation Gauge NORM High PO2 (1.20 to 1.60 ATA) NORM High Oxygen Accumulation (300 OTU per dive / 24 hr) GAUG Dive Displays: Main (default) - Mode graphic GAUG, Elapsed Dive Time (hr:min), Current Depth Alternate - Mode graphic GAUG, Elapsed Dive Time (hr:min), Max Depth Secondary - Day of Week, Temperature, Time of Day (hr:min)
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: Dive Number Current Depth Maximum Depth FO2 Set Point PO2 Value Dive Time Remaining Total Ascent Time No Deco Safety Stop Time Decompression Stop 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 Watch Time of Day Dive Computer Time of Day Watch Countdown Timer Free Countdown Timer Chronograph Out of Range (- - -) Violation Countdown Timer Range: 0 to to 330 FT (100 M) 330 FT (100 M) Air, 21 to 50 % 0.00 to 5.00 ATA 0:00 to 9:59 hr:min 0:00 to 9:59 hr:min 5:00 to 0:00 min:sec 0:00 to 9:59 hr:min 0:00 to 9:59 hr:min 0:00 to 59:59 min:sec 0:00 to 23:59 hr:min 0:00 to 59:59 min:sec 1:00 to 23:59 hr:min 0:00 to 23:59 hr:min 23:50 to 0:00 hr:min* (* starting 10 min after the dive) 23:50 max to 0:00 hr:min* (* starting 10 min. after the dive) 0 to 140F (-9 to 60C) 0:00:00 to 23:59:59 hr:min:sec 0:00 to 23:59 hr:min 23:59 to 0:00 hr:min 59:59 to 0:00 min:sec 0:00:00.00 to 9:59:59.99 hr:min:sec.1/100 sec Resolution: FT (.1 M ) 1 FT (.1 M) 1%.01 ATA 1 minute 1 minute 1 second 1 minute 1 minute 1 second 1 minute 1 second 1 minute 1 minute 1 minute 1 minute second 1 minute 1 minute 1 second 1/100 second