Oceanic ATOM 2.0 User Manual

NOTICE

STORAGE and INITIAL ACTIVATION

Beginning with firmware revision 2E, ATOM 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 ATOM up, the correct Date and Pacific Time will be displayed and it will be ready to operate with full functions.

To wake the ATOM 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 ATOM is brought out of the Deep Sleep mode, it can only be placed back in it by the factory .

CONTENTS

WARRANTY, NOTICES, DECOMPRESSION MODEL ....................................................................................................7

FULL DISPLAY ................................................................................................................................................................. 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 ...................................................................................................................................................... 14

BACKLIGHT .............................................................................................................................................................. 16

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

WATCH FEATURES AND DISPLAYS ............................................................................................................................ 19

LOCAL DEFAULT TIME ............................................................................................................................................ 20

MAIN TIME ................................................................................................................................................................. 21

SET MAIN TIME ......................................................................................................................................................... 22

ALTERNATE TIME ..................................................................................................................................................... 25

SET ALTERNATE TIME ............................................................................................................................................. 26

COUNTDOWN TIMER ............................................................................................................................................... 27

SET COUNTDOWN TIMER ...................................................................................................................................... 28

CHRONOGRAPH ...................................................................................................................................................... 29

DAILY ALARM ........................................................................................................................................................... 31

SET DAILY ALARM .................................................................................................................................................... 32

DIVE COMPUTER FEATURES AND DISPLAYS ........................................................................................................... 33

BAR GRAPH .............................................................................................................................................................. 34

ALPHA / NUMERIC DISPLAYS ................................................................................................................................ 36

Tank Pressure Display .......................................................................................................................................... 36

Depth Displays ...................................................................................................................................................... 36

Time and Date Displays ....................................................................................................................................... 37

Temperature Display ............................................................................................................................................. 38

CONTENTS (continued)

DIVE COMPUTER SURFACE SEQUENCE AND OPERATING MODES...................................................................... 39

SURFACE MODE ...................................................................................................................................................... 40

Normal Surface Main Display ............................................................................................................................... 41

Normal Surface Main Button Operations ............................................................................................................. 43

ATOM Battery Status .......................................................................................................................................... 44

Transmitter Status .............................................................................................................................................. 45

Normal Surface Secondary Display ..................................................................................................................... 45

Normal Surface Alternate Display ........................................................................................................................ 46

NORMAL AND GAUGE SURFACE SET MODES .................................................................................................... 47

SET F GROUP (FO2) ................................................................................................................................................ 47

Set FO2 for NORM Nitrox Dives .......................................................................................................................... 48

Set FO2 GAS 1 ..................................................................................................................................................... 50

Set FO2 GAS 2 ..................................................................................................................................................... 51

Set FO2 GAS 3 ..................................................................................................................................................... 52

Set FO2 50% Default ........................................................................................................................................... 53

SET A GROUP (NORM/GAUG ALARMS) ................................................................................................................ 54

Set Audible Alarm ................................................................................................................................................. 55

Set Depth Alarm ................................................................................................................................................... 56

Set EDT (Elapsed Dive Time) Alarm ................................................................................................................... 57

Set TLBG (Tissue Loading Bar Graph) Alarm ...................................................................................................... 58

Set DTR (Dive Time Remaining) Alarm................................................................................................................ 59

Set Turn Pressure Alarm (TMT1) ......................................................................................................................... 60

Set End Pressure Alarm ....................................................................................................................................... 61

Set PO2 Alarm ...................................................................................................................................................... 62

SET U GROUP (UTILITIES) ...................................................................................................................................... 63

Set Wet Activation ................................................................................................................................................ 64

Set Units of Measure ............................................................................................................................................ 65

Set NORM Safety Stop ......................................................................................................................................... 66

Set Conservative Factor ....................................................................................................................................... 67

Set Backlight Duration .......................................................................................................................................... 68

Set Sampling Rate ................................................................................................................................................ 69

CONTENTS (continued)

Set TMT1 (Transmitter 1 Link Code) .................................................................................................................... 70

Set TMT (Transmitter) 2-3 Use ............................................................................................................................ 72

Set TMT2 (Transmitter 2 Link Code) ................................................................................................................... 73

Set TMT3 (Transmitter 3 Link Code) ................................................................................................................... 75

SERIAL NUMBER (ATOM) ........................................................................................................................................ 77

NORM (Normal Dive) PLAN MODE ......................................................................................................................... 78

FLY MODE ................................................................................................................................................................. 81

SAT MODE (NORM) .................................................................................................................................................. 82

NORM/GAUG LOG MODE ........................................................................................................................................ 83

HISTORY MODE (NORM/GAUG) ............................................................................................................................ 87

OVERVIEW OF DIVE MODE INFORMATION ............................................................................................................... 91

POSITIONING OF THE ATOM .................................................................................................................................. 93

Link Interruption Underwater ................................................................................................................................ 93

DIVE TIME REMAINING (DTR) ................................................................................................................................. 94

No Decompression Dive Time Remaining (NDC) ................................................................................................ 95

Oxygen Accumulation Time Remaining (OTR) .................................................................................................... 96

Air Time Remaining (ATR) .................................................................................................................................... 96

Air Time Remaining Alarm .................................................................................................................................... 97

VARIABLE ASCENT RATE ....................................................................................................................................... 98

ELAPSED DIVE TIME ............................................................................................................................................... 99

CONTROL OF DISPLAYS ......................................................................................................................................... 99

NORM TYPE DIVE MODES (AIR/NITROX) ................................................................................................................. 101

WET CONTACTS ..................................................................................................................................................... 102

NORM NO DECOMPRESSION DIVE MODE ......................................................................................................... 103

NORM Dive No Deco Safety Stop ..................................................................................................................... 106

DECOMPRESSION DIVE MODE ............................................................................................................................ 107

VIOLATION MODES ................................................................................................................................................ 111

HIGH PO2 ................................................................................................................................................................ 116

HIGH OXYGEN ACCUMULATION.......................................................................................................................... 117

SUMMARY OF WARNING AND ALARM MESSAGES .......................................................................................... 118

CONTENTS (continued)

SWITCHING GAS MIXES AND BUDDY PRESSURE CHECK....................................................................................119

SWITCHING GAS MIXES (NORM ONLY) .............................................................................................................. 120

BUDDY PRESSURE CHECK (NORM ONLY) ......................................................................................................... 125

NORM POST DIVE MODES ......................................................................................................................................... 129

TRANSITION PERIOD ............................................................................................................................................ 130

AFTER THE TRANSITION PERIOD ....................................................................................................................... 131

GAUGE OPERATING MODE ....................................................................................................................................... 133

GAUG SURFACE DISPLAYS.................................................................................................................................. 134

GAUG DIVE DISPLAYS .......................................................................................................................................... 135

FREE DIVE OPERATING MODE ................................................................................................................................. 137

FREE SURFACE DISPLAYS ................................................................................................................................... 138

FREE COUNTDOWN TIMER (CDT) ....................................................................................................................... 140

SET FREE CDT ....................................................................................................................................................... 142

SET FREE ALARMS (EDT, FDA) ............................................................................................................................ 143

FREE DIVE DISPLAYS............................................................................................................................................ 148

REFERENCE ................................................................................................................................................................. 153

UPLOADING SETTINGS AND DOWNLOADING DATA ........................................................................................ 154

CARE AND CLEANING ........................................................................................................................................... 156

INSPECTIONS AND SERVICE ............................................................................................................................... 156

BATTERY REPLACEMENT .................................................................................................................................... 158

INSTALLING A TRANSMITTER ON A REGULATOR ............................................................................................ 164

TRANSMITTER COMPATIBILITY WITH NITROX .................................................................................................. 164

ALTITUDE SENSING AND ADJUSTMENT ............................................................................................................ 165

CHARTS OF NO DECOMPRESSION LIMITS AT ALTITUDE ................................................................................ 166

CHART OF OXYGEN EXPOSURE LIMITS ............................................................................................................ 167

SPECIFICATIONS ................................................................................................................................................... 168

INSPECTION/ SERVICE RECORD ......................................................................................................................... 174

OCEANIC WORLD WIDE ....................................................................................................................................... 175

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.

ATOM 2.0 Operating Manual, Doc. No. 12-2698

TRADEMARK, TRADE NAME, AND SERVICE MARK NOTICE

Oceanic, the Oceanic logotype, the Oceanic 'O' symbol, ATOM, the ATOM 2.0 logo, Air Time Remaining (ATR), Diver Replaceable Batteries, Graphic Diver Interface, Tissue Loading Bar Graph (TLBG), Pre Dive Planning Sequence (PDPS), Set Point, Control Console, Turn Gas Alarm, 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: Air Time Remaining (U.S. Patent no. 4,586,136 and 6,543,444) and Data Sensing and Processing Device (U.S. Patent no. 4,882,678). Set TLBG Alarm and 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 ATOM 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 ATOM dive computer model is based upon the latest research and experiments in decompression theory.

the U.S. Navy (or other) No Decompression Tables, is no guarantee of avoiding decompression sickness, i.e. the bends.

can predict how your body will react to a particular dive profile.

Every divers physiology is different, and can even vary from day to day. No machine

San Leandro, CA USA 94577

Still, using the ATOM, just as using

Pay special attention to items marked with this Warning symbol.

ATOM 2.0 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 - indicates O2BG h. Icon - Ascend Arrow i. Symbol - STOP TIME

j. Symbol - NITROX (Mode) k. Symbol - FT or M (Depth) l. Symbol - MAX m. Icons - Tank 1, 2, 3 n. Symbol - FO2

o. Symbols - AIR TIME

p. Icon - degrees (Temperature) q. Icon - Daily Alarm, or -

Transmitter Link r. Symbol - PSI or BAR (Pressure) s. Icon - Descend Arrow t. Icon - Low Battery

DIVE TIME

TIME NDC TIME O2 TIME TAT TIME SURF

WARNING: Prior to diving with the ATOM 2.0, you must also read and understand the Oce- anic Dive Computer Safety and Reference Manual, Doc. No. 12-2262, which provides Important Warnings and Safety Recommenda- tions as well as general product information.

INTRODUCTION

GENERAL FEATURES AND DISPLAYS

AND

INTRODUCTION

Welcome to OCEANIC and thank you for choosing the ATOM 2.0 !

It is extremely important that you read this Operating Manual in sequence and understand it completely before attempting to use the ATOM 2.0 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 ATOM 2.0. It contains information that you must become familiar with prior to diving with your ATOM 2.0.

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 ATOM 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 ATOM 2.0 will enter selected Dive Mode upon descent to 5 FT (feet)/1.5 M (meters), regardless of what operating Mode it is in.

WARNING: When Wet Activation is set OFF, the ATOM 2.0 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 ATOM 2.0, hereafter referred to as the ATOM, 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 Battery/Transmitter Status, Fly, Desat, Log, and History Modes. Tank Pressure is displayed if a Transmitter is active and Linked with the ATOM.

GAUG Mode only allows access to Battery/Transmitter Status, Fly, Log, and History Modes. It also displays Tank Pressure.

FREE Mode only allows access to ATOM Battery Status, Log, and

History Modes. It does not display Tank Pressure.

Once a dive is made in GAUG Operating Mode, the ATOM is locked into that Mode for 24 hours after the dive.

The ATOM also features 2 modes for use of Transmitter Pressure. A setting allows you to choose whether Transmitters 2 and 3 are for your use (SELF) or for checking 1 or 2 Buddies' Tank

Pressure(s). The setting remains fixed until changed in the NORM/GAUG SET U menu.

PC INTERFACE

Interface with a PC is accomplished by connecting the ATOM to a PC USB Port using the USB Interface Cable provided. The same Cable is used for Upload and Download.

The software program is on the CD provided, 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 ATOM's existing Settings and for entering Time, Alarm, and Dive Computer settings into the ATOM. The Data Download program is used to retrieve Data that was sampled during dives and stored in the ATOM's memory.

The ATOM 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 ATOM'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 ATOM appear on the display until completion of the Upload or Down- load operation.

 The ATOM 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, Gas and Transmitter identification, Altitude level, and Alarm identification. At times, the second line is also used to display alpha numeric graphics such as PO2 and On/Off. The FO2 setting of a selected Gas 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 ATOM 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 -

 Air Time Remaining (ATR) at 5 minutes, then again at 0 minutes.  ATR becomes less than No Deco and O2 Time Remaining for 1 minute.  Turn Pressure at the Set Point selected (Transmitter 1).  End Pressure at the Set Point selected (active Transmitter).  Descent deeper than the Max Depth Set Point selected.  Dive Time Remaining at the Set Point selected.  Elapsed Dive Time at the Set Point selected.  High PO2 of 1.60 ATA or the Set Point selected.  High O2 of 300 OTU (single or daily exposure).

 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.  Loss of the active Transmitter Link signal for more than 15 seconds during a dive.  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).  A Gas Switch to another tank would expose the diver to PO2 greater than 1.60 ATA.

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.  Air Time Remaining becomes less than No Deco and O2 Time Remaining.  FREE Dive Elapsed Dive Time Alarm (3 beeps every 30 seconds if set On).  FREE Dive Depth Alarms 1/2/3 (set sequentially deeper) - each 3 beeps 3 times.  FREE Dive TLBG Alarm (Caution zone, 4 segments) - 3 beeps 3 times.  Entry into Deco during a FREE Dive (Permanent Violation) - 3 beeps 3 times.  Watch Daily Alarm reaches time set (disabled during Dive Modes).  Watch or 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 fol- lowed 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* plus

the user set Duration time of 0, 5, or 10 seconds, for a maximum of 20 seconds. (*The Backlight will turn Off if the button is held depressed for more than 10

seconds.)  Press the button again to activate as desired.

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

POWER SUPPLY

The ATOM (Watch) utilizes one 3 volt CR2430 Lithium Battery. When used as a Dive Computer, the ATOM's battery should operate normally for 1 year or 300 dive hours if 2 dives are conducted during each dive period. The ATOM checks its battery voltage every 2 minutes during surface operation.

 If voltage of the ATOM 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 the ATOM's 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 ATO M

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 remaining to

maintain operation for the remainder of that dive.

Transmitters use one 3 volt, CR2 Lithium Battery. A Transmitter's battery should provide normal operation for 1 year or 300 dive hours. Transmitters check battery voltage when they are pressur- ized and will send a Low Battery signal to the Receiver in the ATOM when the voltage drops below the Warning level.

 Transmitter Low Battery Warning/Alarm conditions are only

displayed on Status screens that can be accessed while

viewing the NORM Surface Display.

Fig. 3 - LOW BATTERY

WARNING

Fig. 4 - LOW BATTERY

ALARM

Fig. 5 - ATOM BATT GOOD

Fig. 6A - TMT 1 BATT LOW

Fig. 6B - TMT 3 BATT

(Not Available)

To check the condition of the ATOM or a Transmitter's Battery if NORM or GAUG Mode is selected, depress the S button for 2 seconds while viewing the NORM, GAUG, or FREE Surface Main Display, then release it.

 As the button is depressed, the ATOM's Receiver will

activate, if in NORM or GAUG Mode.

 2 seconds later, the ATOM's Battery status will be displayed

for 3 seconds (Fig. 5), then -

 if active and linked, Transmitter 1's Battery status will be

displayed for 3 seconds (Fig. 6A), then -

 if active and linked, Transmitter 2's Battery status will be

displayed for 3 seconds, then -

 if active and linked, Transmitter 3's Battery status will be

displayed for 3 seconds, then -  the display will then revert to Surface Mode.  If a Transmitter is not active and linked, the message

NotAvAil (not available) will be displayed (Fig. 6B).

Tank Pressure (described later) will also appear on the active Transmitters Battery Status displays.

NOTE: If Transmitter 2-3 Use is set for BUD (Buddy Pressure Check), Battery Status of those Transmitters is not displayed (only Pressure).

WARNING: Prior to diving with the ATOM, you must also read and understand the Oce- anic Dive Computer Safety and Reference Manual, Doc. No. 12-2262, which provides Important Warnings and Safety Recommenda- tions as well as general product information.

FEA TURES AND DISPLAYS

WATCH

LOCAL DEFAULT TIME

Fig. 7 - MAIN TIME

Fig. 8 - ALTERNATE TIME

Watch Main Time

(Fig. 7) 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. 8), which is set by Hour Differen- tial, is the current Time at a remote travel location. Upon arrival at the location, Alternate Time can be interchanged 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 T imer >

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 se- lected to be the Local Default Watch Time (Main or Alternate).

MAIN TIME,

information displayed includes: > Tissue Loading Bar Graph, if any after NORM/FREE dives. > Alarm icon - if the Daily Alarm is its set On (Fig. 9a) > 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*) (*seconds appear in the middle row, Fig. 9b)

 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.

a b

Fig. 9 - MAIN TIME

(24 Hour Format)

Fig. 10 - 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 screen > Time screen (Hour > Minute) > Date screen (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 and 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

Hour Format

screen displaying the graphic HOUR, symbol

Set

TIME, and the Hour Format Set Point 12 or 24 flashing (Fig. 10).

 Pressing and releasing the S button momentarily (< 2

seconds) will toggle the flashing 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. 11).  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 Am or Pm displayed when Time 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: Am to 11:

Pm (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. 12).  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. 11 - SET HOUR

Fig. 12 - SET MINUTES

Fig. 13 - SET YEAR

Fig. 14 - SET MONTH

Fig. 15 - 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. 13).

 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 MNTH

SET

(Fig. 14).

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 DA Y

(Fig. 15).

 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.

 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 1 time (<

2 seconds) while the MAIN TIME screen is displayed will access the ALTERNATE TIME screen.

Information provided includes (Fig. 16):

> Tissue Loading Bar Graph, if any after NORM/FREE dives. > Alarm icon (solid) - if the Daily Alarm is set On. > Lazy 8 symbol (Fig. 16a) 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 an ATOM Low Battery Condition exists. > Month and Day (Day and Month if set for Metric). > Time of Day (hour , minute, seconds).

Main Time/Date can also be set using the PC Settings Upload program included on the ATOM's OceanLog software CD.

Prior to shipment from the factory, any error of the ATOM's Main Time is determined and corrected.

Fig. 16 - ALTERNATE TIME

 Pressing and releasing the M button momentarily and

repeatedly (< 2 seconds) will step through the other Main W atch Modes.

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

silence and acknowledge the Daily Alarm (if its set and it sounds).

 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.  Pressing and holding the M button for 2 seconds will revert

to the MAIN TIME screen.  Depressing both the A and S buttons simultaneously for 2

seconds will access the SET ALTERNATE TIME Mode with

the Set Point flashing.

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.

Fig. 17 - SET ALTERNATE

TIME

Displayed will be the Lazy 8 symbol and graphic OFF, or the +/- numeric Hour Differential Set Point flashing (Fig. 17).

 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 Countdown Time (hr:min) if running, or OFF flashing (Fig. 18) and the previously set Countdown Time (hr:min) if the set Countdown 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.

FREE Dive Mode has a separate Min:Sec Countdown Timer.

Fig. 18 - WATCH COUNT-

DOWN TIMER

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).

 Depressing both the A and S buttons simultaneously for 2

seconds will access the

TIMER

screen indicated by the graphics TIMR and SEt,

SET WATCH COUNT DOWN

symbol TIME, and HOUR Set Point flashing (Fig. 19).  If no button is pressed during a period of 2 minutes, the unit

will revert to the Local Default Watch Time screen.

Fig. 19 - SET WATCH CDT

 Depressing and holding the S button while the

HOUR

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.

Set

 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. 20).

 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.

Fig. 20 - CD TIMER

STARTED

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. 21).

 Pressing and releasing the S button momentarily (< 2

seconds) will start the TIMER which will begin counting up from 0:00:00.00 to 99:59:59.99 (hr:min:sec.1/100th sec) in increments of .01 (1/100th sec).

Fig. 21 - CHRONOGRAPH

Fig. 22 - LAP RECALL

 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 is Timer reaches 99:59:59.99 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. 22).  Depressing and holding the A button for 2 seconds will stop

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

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