Oceanic GEO User Manual

GEO

Watch / Dive Computer

operating manual

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

j. Icon - Degrees

k. Icon - Stop Time Required

l. Icon - PO2 m. Icon - Nitrox n. Icon - Daily Alarm set o. Icon - Low Battery p Icon - Depth/Max Depth q. Icon - Descend

O2 Time Remaining No Deco Time Remaining Total Ascent Time FO2 Set Point

Elapsed Dive Time

FULL LCD

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 ................................................................................................................................................ 13

SYMBOLS AND ALPHA NUMERIC GRAPHICS.............................................................................................. 13

AUDIBLE ALARM ............................................................................................................................................. 13

BACKLIGHT ..................................................................................................................................................... 15

POWER SUPPLY ............................................................................................................................................. 16

WATCH FEATURES AND DISPLAYS ................................................................................................................... 17

LOCAL DEFAULT TIME ................................................................................................................................... 18

MAIN TIME ....................................................................................................................................................... 19

SET MAIN TIME ............................................................................................................................................ 20

ALTERNATE TIME ........................................................................................................................................... 23

SET ALTERNATE TIME ................................................................................................................................ 24

COUNTDOWN TIMER ...................................................................................................................................... 25

SET COUNTDOWN TIMER .......................................................................................................................... 25

CHRONOGRAPH ............................................................................................................................................. 27

DAILY ALARM .................................................................................................................................................. 28

SET DAILY ALARM ....................................................................................................................................... 29

DIVE COMPUTER FEATURES AND DISPLAYS ................................................................................................. 31

BAR GRAPH .................................................................................................................................................... 32

ALPHA / NUMERIC DISPLAYS ....................................................................................................................... 34

Depth Displays .............................................................................................................................................. 34

Time and Date Displays ................................................................................................................................ 34

Temperature Display ..................................................................................................................................... 35

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 .................................................................................................................................... 46

Set A Group (NORM/GAUG Alarms) ........................................................................................................... 47

Set Audible Alarm .......................................................................................................................................... 47

Set Depth Alarm ............................................................................................................................................ 48

Set EDT (Elapsed Dive Time) Alarm ............................................................................................................. 49

Set TLBG (Tissue Loading Bar Graph) Alarm ............................................................................................... 50

Set DTR (Dive Time Remaining) Alarm ......................................................................................................... 51

Set PO2 Alarm .............................................................................................................................................. 52

Set U Group (Utilities) ................................................................................................................................. 53

Set Wet Activation ......................................................................................................................................... 54

Set Units ....................................................................................................................................................... 54

Set Safety Stop ............................................................................................................................................. 55

Set Conservative Factor ................................................................................................................................ 56

Set Backlight Duration ................................................................................................................................... 57

Set Sampling Rate ........................................................................................................................................ 58

SERIAL NUMBER ........................................................................................................................................ 58

PLAN Mode .................................................................................................................................................. 59

FLY Mode ..................................................................................................................................................... 62

DESAT Mode ................................................................................................................................................ 63

LOG Mode .................................................................................................................................................... 64

HISTORY Mode ............................................................................................................................................ 69

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 ................................................................................................................................ 76

NORM TYPE DIVE MODES ................................................................................................................................. 77

WET ACTIVATION CONTACTS ....................................................................................................................... 78

NORM NO DECOMPRESSION DIVE MODE ................................................................................................... 79

No Deco Safety Stop ..................................................................................................................................... 81

DECOMPRESSION DIVE MODE ..................................................................................................................... 83

VIOLATION MODES ......................................................................................................................................... 86

Conditional Violation ...................................................................................................................................... 86

Delayed Violation #1 ..................................................................................................................................... 87

Delayed Violation #2 ..................................................................................................................................... 88

Delayed Violation #3 ..................................................................................................................................... 88

Immediate Violation and Violation Gauge Mode ............................................................................................ 89

HIGH PO2 ......................................................................................................................................................... 91

HIGH OXYGEN ACCUMULATION ................................................................................................................... 92

SUMMARY OF WARNING AND ALARM MESSAGES ..................................................................................... 93

NORM POST DIVE MODES ................................................................................................................................. 95

TRANSITION PERIOD ..................................................................................................................................... 96

AFTER THE TRANSITION PERIOD ................................................................................................................. 97

UPLOADING SETTINGS AND DOWNLOADING DATA .................................................................................. 99

PC Compatibility Requirements .................................................................................................................. 100

GAUGE OPERATING MODE ............................................................................................................................. 101

GAUGE MODE ............................................................................................................................................... 102

CONTENTS (continued)

FREE DIVE OPERATING MODE ....................................................................................................................... 105

FREE Surface Mode ................................................................................................................................... 106

FREE CDT (COUNTDOWN TIMER) .............................................................................................................. 108

Set FREE CDT ............................................................................................................................................ 110

FREE EDT (ELAPSED DIVE TIME) ALARM .................................................................................................. 111

Set FREE EDT Alarm .................................................................................................................................. 111

FREE DEPTH ALARMS (FDA) ....................................................................................................................... 112

Set FDA1 .................................................................................................................................................... 113

Set FDA2 .................................................................................................................................................... 114

Set FDA3 .................................................................................................................................................... 115

FREE DIVE MODE ......................................................................................................................................... 116

FREE Dive CDT .......................................................................................................................................... 117

FREE Dive Alarms ...................................................................................................................................... 117

REFERENCE ...................................................................................................................................................... 121

CARE AND CLEANING .................................................................................................................................. 122

INSPECTIONS AND SERVICE ....................................................................................................................... 122

BATTERY REPLACEMENT ........................................................................................................................... 123

ALTITUDE SENSING AND ADJUSTMENT .................................................................................................... 128

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.

LIMITED TWO-YEAR WARRANTY

For details, refer to the Product Warranty Registration Card provided. Register on-line at www.OceanicWorldwide.com

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. 12-2734

San Leandro, CA USA 94577

TRADEMARK, TRADE NAME, AND SERVICE MARK NOTICE

Oceanic, the Oceanic logotype, the Oceanic 'O' symbol, GEO, the GEO logo, Diver Replace- able 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. This model is merely a way to apply a limited set of data to a large range of experiences. The GEO dive computer model is based upon the latest research and experi- ments in decompression theory.

other) No Decompression Tables, is no guarantee of avoiding decompression sickness, i.e. the bends.

day to day. No machine can predict how your body will react to a particular dive profile.

Still, using the GEO, just as using the U.S. Navy (or

Every divers physiology is different, and can even vary from

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. 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.

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.

NOTE: 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

OPERATING MODE STRUCTURE

Unless it is operating in Dive Computer mode, the GEO will be ON in the default WATCH MAIN TIME (home time) mode (Fig.

1), like a standard WATCH, until the Mode is changed.

The M button is used to access 4 other Modes that include Alternate Time Mode, Countdown Timer, Chronograph (stop watch/lap timer), and Daily Alarm. It is also used to revert to the Local Default Time display and access Computer Modes.

The screens of the Main Modes and Sub Modes will remain on display until a button is pressed to access another screen or Mode, activate a sequence, or for 2 minutes if no button is pressed. The Chronograph remains on display as long as it is running unless another Mode is accessed.

When Wet Activation is set On, the GEO will enter selected Dive Mode upon descent to 5 FT (feet)/1.5 M (meters) for 5 seconds, regardless of what operating Mode it is in.

WARNING: When Wet Activation is set OFF, the GEO must be in Dive Surface Mode (NORM< GAUG, or FREE prior to the first dive of a new series. Commencing a dive while in Watch modes will not activate Dive Mode unless Wet Activation is set ON.

Main Sequence (while at home)

Main Time

Alternate Time

Countdown Timer

Chronograph

Daily Alarm

Alternate Sequence

(at a travel location)

Alternate Time Main Time (home) Countdown Timer

Chronograph

Daily Alarm

Fig. 1 - MAIN TIME

Fig. 2 - DC MODES

OPERATION AS A DIVE COMPUTER

The GEO features 3 Dive Computer (DC) Operating Modes, NORM (Fig. 2A) which is used for Air and Nitrox dives, GAUG (Fig. 2B) used for dives in which Nitrogen-Oxygen calculations are not performed, and FREE (Fig. 2C) used for activities that do not use SCUBA.

Entering Settings and Plan Mode are only available in NORM SURF Mode which also allows access to Fly, Desat, Log, and 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. The same Cable is used for Upload and Download.

The software program is on the OceanLog CD, together with a USB Driver. The program's Help serves as the user manual and can be printed for personal use. The Settings Upload program is used to check the GEO's existing Settings and for entering Time, Alarm, and Dive Computer settings into the

GEO.

The Data Download program is used to retrieve Data that was sampled during dives and stored in the GEO's memory.

The GEO checks for an External Access request once every second while in the Watch Main Time. Checks are not made if the unit is wet. For a connection to be made, the Interface Cable is clipped onto the GEO's Data Port and plugged into a PC USB Port. To establish the connection, the PC program must be running. When the connection is made, all segments of the LCD appear on the display until completion of the Upload or Download operation.

 The GEO reverts to the Watch Main Time screen after completion of the

Upload or Download operation, or after 2 minutes if no PC action was taken.

SYMBOLS AND ALPHA NUMERIC GRAPHICS

The upper line of digits on the LCD screen is used to convey alpha Messages such as Day of the Week, Operating Modes, items being Set, Altitude level, and Alarm identification. At times, the second line is also used to display alpha numeric graphics such as FO2 and On/Off. The PO2 values will appear in the lower line.

AUDIBLE ALARM

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). After being acknowledged and the situation corrected, the Alarm will sound again upon reentry into the warning situation, or entry into another type of warning situation.

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. It will flash as the Audible Alarm sounds. It will turn Off when the Alarm is acknowledged or the situation is corrected. The Audible and LED will not be active if the Alarm is Set OFF (a group A setting).

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 at the Set Point selected.  High O2 of 300 OTU (single or daily exposure).  Tissue Loading 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.  Entry into Decompression Mode (Deco).  Conditional Violation (above a required Deco Stop Depth for less than 5

minutes).  Delayed Violation (above a required Deco Stop Depth for more than 5

minutes).  Delayed Violation (a Deco Stop Depth greater than 60 FT/18 M is required).  Delayed Violation (Maximum Operating Depth of 330 FT/100 M is

exceeded).  Watch Daily Alarm reaches time set (disabled during Dive Modes).  Watch Mode Countdown Timer reaches 0:00.

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 -

 NORM/GAUG Ascent Rate is 51 to 60 FPM (15.1 to 18 MPM) when deeper

than 60 FT (18 M), or 26 to 30 FPM (7.5 to 9 MPM) at 60 FT (18 M) and

shallower.  FREE Elapsed Dive Time Alarm (3 beeps every 30 seconds if set On).  FREE Depth Alarms 1/2/3 (set sequentially deeper) - each 3 beeps 3 times.  FREE TLBG 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 Ceiling Stop Depth for more

than 5 minutes (referred to as a Delayed Violation).  Decompression requires a Ceiling Stop Depth of 70 FT (21 M) or deeper.  Being on the Surface for 5 minutes after a Conditional Violation (Permanent

Violation).

BACKLIGHT

To activate the Backlight - press the L button.

 The Backlight will activate and illuminate the display for button depression

time (10 seconds maximum) plus the user set Duration time of 0, 5, or 10

seconds, for a maximum of 20 seconds.  Press the button again to activate as desired.

Fig. 3 - LOW BATTERY

WARNING

Fig. 4 - LOW BATTERY

ALARM

NOTE: Extensive use of the Backlight reduces estimated Battery life. Also, the Backlight does not operate during a Low Battery Condi- tion or when the GEO is connected to a PC.

POWER SUPPLY

The GEO utilizes one 3 volt CR2430 Lithium Battery. When used as a Dive Computer, the battery should operate normally 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. 3a) as an indication that the Battery should be changed prior to commencing a series of dives.

 If voltage decreases to the Alarm level (2.50 volts), the

Battery icon will flash and the message CHNG > BATT will scroll at the top of the display (Fig. 4). Operation will automatically revert to Main Time Mode. The GEO would then only operate in Watch modes until the Battery becomes completely depleted.

 Low Battery Warning/Alarm conditions are not displayed

during Dive Modes.

 If a Low Battery Condition was not displayed prior to

starting a Dive, and a Low Battery Condition occurs during the dive, there will be sufficient Battery power to maintain operation for the remainder of that dive.

WATCH

FEATURES AND DISPLAYS

LOCAL DEFAULT TIME

Fig. 5 - MAIN TIME

TIME for the Remote

Location will display

Am (or Pm). Local

Default TIME will

not.

Fig. 6 - ALTERNATE

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 -

Main Time > Alternate Time > Countdown Timer > Chronograph > Daily Alarm

Watch Alternate Time

(Fig. 6), which is set by Hour Differential, is the current Time at a remote travel location. Upon arrival at the location, Alternate Time can be inter- changed with Main Time to make it the Local Default Time while visiting the travel location.

The M button will then access the screens in this sequence -

Alternate Time > Main Time > Countdown Timer >

Chronograph > Daily Alarm

While viewing Alternate Time, depressing and holding the S button for 2 seconds will replace Main Time with Alternate Time that will then become the Local Default Time until changed.

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).

MAIN TIME,

information displayed includes: > Tissue Loading Bar Graph, if any after NORM/FREE dives. > Alarm icon - if the Daily Alarm is set On (Fig. 7a) > Day of the Week graphic MON (or TUE, WED, THU, FRI,

SAT, SUN), or the graphic WET (if the unit is wet). > Battery icon - if a Low Battery Condition exists. > Month and Day (Day and Month if set for Metric) > 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)

Fig. 8 - SET HOUR

FORMAT

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.

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.

 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.

 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. 9 - SET HOUR

Fig. 10 - SET MINUTES

Fig. 11 - SET YEAR

Fig. 12 - SET MONTH

Fig. 13 - SET DAY

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 (with leap year corrections).

 Pressing and releasing the A button momentarily (< 2 sec)

will save the Year Set Point and/or advance to

MONTH

with the Set Point flashing and the graphic

SET

MNTH (Fig. 12).

NOTE: The YEAR will not be displayed in any Mode other than SET DATE. The DATE will reset to 1.1 2006 when the Battery is replaced.

 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 (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.

NOTE: 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. > Alarm icon (solid) - if the Daily Alarm is set On. > Lazy 8 symbol (Fig. 14a) identifies Time as Alternate Time. > Day of the Week graphic MON (or TUE, WED, THU, FRI,

SAT, SUN), or WET (if the unit is wet). > Battery icon, if a Low Battery Condition exists. > Month and Day (Day and Month if set for Metric). > Time of Day (hr:min:sec).  Pressing and releasing the M button momentarily and

repeatedly (< 2 seconds) will step through the other Main

Watch Modes.  Pressing and releasing the S button (< 2 seconds) will

silence and acknowledge the Daily Alarm (if its set On

and it sounds).

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.

Fig. 14 - ALTERNATE

TIME

Fig. 15 - 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.  Depressing and holding the M button for 2 seconds will

revert to the MAIN TIME screen.

SET ALTERNATE TIME

 ALTERNATE TIME can be set OFF, or to an Hour based

numeric time Differential ranging from + 1 through +23

through - 23 through -1 (hours).  Once the Differential is selected and saved, ALTERNATE

Time/Date values will be based upon the MAIN TIME Set

Points plus/minus the Differential.

Displayed will be the Lazy 8 symbol and graphic OFF, or the +/- numeric Hour Differential Set Point flashing (Fig. 15).

 Depressing and holding the S button while the Set Point is

flashing will scroll through the Set Points in increments of 1

Hour at a rate of 4 per second.  Pressing and releasing the A button momentarily (< 2

seconds) will save the Set Point and/or advance to the

ALTERNATE TIME screen.  Depressing and holding the M button for 2 seconds will

revert to the MAIN TIME screen.

If no button is pressed during a period of 2 minutes, the unit will revert to the MAIN TIME screen.

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. 16) and the previously set Countdown Time (hr:min) if the set Count- down started and has ended, or OFF (solid) and 0:00 if no time was previously set.

Once set ON, a Countdown will run in the background until it counts down to 0:00, or it is set OFF, or a Dive is made at which time it will default to OFF and the value previously set.

When a set Countdown Time reaches 0:00, the Audible Alarm will beep 10 times and the red LED warning light will flash.

 Pressing and releasing the S button (< 2 seconds) will

acknowledge and silence the Alarm.

 Pressing and releasing the S button (< 2 seconds) will

silence and acknowledge the Daily Alarm (if its set and it

sounds).  Pressing the L button will activate the Backlight.  Depressing and holding the M button for 2 seconds will

revert to the Local Default Watch Time screen (MAIN or

ALTERNATE TIME).

FREE Mode has

separate COUNT-

DOWN TIMER

Fig. 16 - WATCH

COUNTDOWN TIMER

Fig. 17 - SET WATCH

CDT

Fig. 18 - CD TIMER

STARTED

 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.

 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 0: to 23: (hr).

 Pressing and releasing the A button momentarily (< 2

seconds) will save the HOUR Set Point and/or advance to SET MINUTES with the MINUTES Set Point flashing.

 Depressing and holding the S button while the MINUTES

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 (min).

 Pressing and releasing the A button momentarily (< 2

seconds) will save the MINUTES Set Point and/or advance to the COUNTDOWN TIMER screen indicated by the graphic OFF (flashing) in place of the graphic SEt.

 Pressing and releasing the S button momentarily (< 2

seconds) will toggle from OFF to ON and Start the Timer (Fig. 18).

 Depressing and holding the M button for 2 seconds will

revert to the Local Default Watch Time screen.

> If no button is pressed during a period of 2 minutes, the

unit will revert to the Local Default Watch Time screen.

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).  Pressing and releasing the S button momentarily (< 2

seconds) will start the TIMER which will begin counting up

from 0:00:00.00 to 9:59:59.99 (hr:min:sec.1/100th sec)

in increments of .01 (1/100th sec). > During the first 4 seconds the 1/100th second values will

be displayed, then 2 dashes ( . - - ) will be displayed. The

1/100th values will be recorded and displayed when

LAPs are frozen and when later recalled.  Subsequent pressing and releasing of the S button (< 2

seconds each) will freeze Lap Times (LAP1 through LAP9).

After 9 Laps are recorded, additional LAPs will replace

LAP9, shift the others to lower LAP numbers, while

discarding LAP1. > If the time reaches 9:59:59.99 hr:min:sec.1/100 sec, it

will stop and save that number as a LAP. Subsequent

presses of the S button will then have no effect.  Pressing and releasing the A button momentarily (< 2

seconds) will Stop the Timer and Recall LAP1, displaying

the graphic LAP1 (flashing) and the LAP 1 Time. Repeat

presses will display other LAPs/Times (Fig. 20).  Depressing and holding the A button for 2 seconds will

stop the Timer and reset the Time to 0:00:00.00 (flashing).

Fig. 19 - CHRONO-

GRAPH

Fig. 20 - LAP RECALL

Fig. 21 - DAILY ALARM

STATUS

 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. If another screen is accessed, it will then continue to run in the background. Upon descending on a dive, the Chronograph operation will be terminated and reset to 0:00:00.00.

DAILY ALARM

When set ON, the DAILY ALARM will sound the Audible Alarm and flash the Red LED at the Time set every day.

 Pressing the M button momentarily 4 times (< 2 seconds

each time) while the MAIN TIME screen is displayed will access the DAILY ALARM STATUS screen.

DAILY ALARM STATUS

, information provided includes (Fig.

21): > Alarm icon > Graphics ALRM and ON (or OFF), flashing. > Alarm Time Set Point (hr:min).

 Pressing and releasing the S button momentarily (< 2

seconds) will toggle between ON and OFF.

> 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.

 Depressing and holding the M button for 2 seconds will

revert to the Local Default Watch Time screen.  Pressing the L button will activate the Backlight. > If no button is pressed during a period of 2 minutes, the

unit will revert to the Local Default Watch Time screen.

SET DAILY ALARM

, information provided includes (Fig. 22): > Alarm icon > Graphics ALRM and SEt. > Alarm Time previously set (hr:min) with the HOUR Set Point

flashing.

 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: Am to 11: Pm (or 0: to 23: if 24 hour format). The graphic A (= Am) or P (= Pm) will be displayed when setting Time in 12 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 Set Point flashing.

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 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.

 Depressing and holding the M button for 2 seconds will

revert to the Local Default Watch Time screen.

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