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.

Upon descending on a dive, the Chronograph operation will be terminated and reset to 0:00:00.0.

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. 23):

> 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.

Fig. 23 - DAILY ALARM

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

will revert to the Local Default Watch Time screen.

Fig. 24 - SET DAILY ALARM

SET DAILY ALARM

, information provided includes (Fig. 24): > 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

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 Am or 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.

 Depressing and holding the S button while the

MINUTE

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.

Set

DIVE COMPUTER

FEATURES AND DISPLAYS

Fig. 25 - TLBG

Fig. 26 - O2BG

BAR GRAPH

The ATOM features one shared Bar Graph that represents either nitrogen loading, or when accessed, oxygen accumulation. By default the Bar Graph (Fig. 25a), referred to as the Tissue Loading Bar Graph (TLBG), represents your relative no decom- pression or decompression status.

As your Depth and Elapsed Dive Time increase, segments will add to the TLBG, and as you ascend to shallower depths, the segments of the TLBG will begin to recede, indicating that additional no decompression time is allowed.

The Tissue Loading Bar Graph monitors 12 different nitrogen compartments simultaneously and displays the one that is in control of your dive. It consists of 5 segments, the lower 4 represent No Decompression status and the fifth at the top

indicates a Decompression condition.

When the ATOM is set to operate in NORM Nitrox mode, the Bar Graph will represent oxygen accumulation when the oxygen data screen (Alternate Display) is accessed temporarily. The O2 icon (Fig. 26a) will appear as an indication.

Regardless of which parameter the Bar Graph is representing at the time, nitrogen (if NORM or FREE) and oxygen (if NORM) calculations will continue to be performed in the background.

Displays associated with oxygen and the O2 Bar Graph will be displayed if FO2 for any Gas (1, 2, or 3) has been set at a value other than 'Air' (e.g., a numerical value) and the Alternate screen that displays oxygen related data is accessed.

When the oxygen data screen is accessed during a NORM dive, the Bar Graph will show the maximum of either per dive accumu- lated oxygen or 24 hour period accumulated oxygen.

As your oxygen exposure (accumulation) increases during a NORM dive, segments will add to the O2 Bar Graph, and as saturation decreases, it will begin to recede, indicating that additional exposure is allowed for that dive and 24 hour period.

The ATOM will store oxygen accumulation calculations for up to 10 dives conducted during a 24 hour period. If the maximum limit for NORM dive oxygen loading has been exceeded for that day (24 hour period), all of the segments of the O2 Bar Graph will be displayed flashing (Fig. 27).

Depth/Time values will not appear in Plan Mode until the O2 Bar Graph recedes into the normal zone (lower 4 segments) indicating that your daily oxygen dosage has decreased an amount equivalent to the amount accumulated during the latest dive completed.

Fig. 27 - O2 EXCEEDED

Fig. 28 - DIVE MAIN

Fig. 29 - DIVE ALTERNATE

While you cannot provide a guarantee against the occurrence of decompression sickness, you may choose your own personal zone of caution based upon age, physique, excessive weight, etc., to reduce the statistical risk.

Within the available NORM Mode parameters that can be set (described later) are a TLBG Alarm and a Conservative Factor which if set ON reduces No Decompression times allowed.

FREE Dive Mode has a separate (fixed) TLBG Alarm.

ALPHA / NUMERIC DISPLAYS

Tank Pressure Display (NORM/GAUG only)

When the ATOM's Receiver is set ON and active, Tank Pres- sure from the active Transmitter that is properly linked will be displayed on the NORM or GAUG MAIN screens (Fig. 28a).

Values of Pressure are displayed numerically from 000 PSI (00 BAR) up to 5,000 PSI (345 BAR) in increments of 5 PSI (1 BAR).

Depth Displays (all Modes)

During dives, the

Maximum Depth

(Fig. 29a) indicate Depths from 0 to 330 FT (100 M) in incre-

ments of 1 FT (.1 M).

Current Depth

display (Fig. 28b) and

which is accessed as an Alternate Display

During a No Decompression Safety Stop, the set

Stop Depth

(Fig. 30a) is displayed and during a Decompression condition, the required

Ceiling Stop Depth

is displayed.

Time and Date Displays Time of Day and NORM/GAUG Mode displays

are shown in hour:minute format (i.e., 1:16 represents 1 hour and 16 minutes, not 116 minutes!).

FREE Dive Mode displays

are shown in minute:second format. The colon that separates hours and minutes (minutes and seconds) blinks once per second when the display is indicating real time (e.g., Surface Interval, Elapsed Dive Time), and is solid (non-blinking) when times are calculated projections (e.g., Time to Fly, Plan).

The

Primary Time

largest digits of the display (Fig. 30b). Another

display, at the bottom of the screen, has the

time

display (Fig. 30c) is located in the middle row. Both displays are identified by the symbol TIME.

When the ATOM is operating in Dive Computer mode,

Date

is displayed only to identify dives when they are accessed in the LOG Mode (Fig. 31). When Units of Measure are set for Imperial, Month appears to the left of Day (Fig. 31a) separated by a decimal point (month.day). When set for Metric units, the Month appears to the right of Day (day.month).

Fig. 30 - NO DECO SAFETY

STOP

Fig. 31 - LOG PREVIEW

Temperature Display Ambient Temperature

can be viewed on the surface and

during dives by accessing a Secondary Display (Fig. 32a).

The lowest Temperature recorded during each NORM/GAUG dive is recorded in the LOG for that dive.

NOTE: Each display represents unique pieces of information. It is imperative that you under- stand the formats, ranges, and values of the information represented to avoid any possible misunderstanding that could result in error.

You must also understand the icons, symbols, and alpha/numeric messages presented.

Fig. 32 - TEMPERATURE

(Secondary Display)

The Informational Displays are described in detail as the various operating modes they appear in are presented throughout this manual.

DIVE COMPUTER

SURFACE SEQUENCE

OPERATING MODES

AND

Fig. 33 - NORM SURF MAIN

( no dive made)

DIVE COMPUTER (DC) OPERATING MODES

As described on page 12, the ATOM features 3 selectable DC Operating Modes -

 NORM - for Normal Air or Nitrox dives  GAUG - for dives with no Nitrogen/Oxygen calculations  FREE - for dives with no SCUBA

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

SURFACE MODE

Pressing and holding the M button for 2 seconds while the Local Default Watch TIME screen is displayed (Main Time or Alternate Time, whichever was selected as the Default) accesses the selected SURFACE MODE screen (NORM, GAUG, or FREE).

If no dive has been taken within the past 24 hours, the NORM SURF MAIN screen will appear as the default (Fig. 33).

 The GAUG and FREE SURF MAIN screens can be accessed

by subsequent 2 second presses of the M button.

 The Operating Mode selected (NORM, GAUG, or FREE)

will remain on display for 2 hours until a dive is made or another Operating Mode is selected.

If a dive has been conducted within the past 24 hours, the SURF MAIN screen for that Operating Mode (NORM, GAUG, or FREE) will be displayed.

At any time while operating in Surface Modes, the ATOM will enter Dive Mode upon descent to 5 FT (1.5 M).

 During the 2 hour pre dive surface period, if the M button is

pressed to access other screens in the Watch Mode sequence, Surface Mode must again be accessed prior to the first dive of a series (if WET ACTIVATION is set OFF).

 When WET ACTIVATION is set ON, the Wet Contacts will

activate the selected Dive Mode regardless of what Mode the ATOM is operating in at the time of the descent.

The ATOM will enter POST DIVE SURFACE MODE following a dive upon ascent to 4 FT (1.2 M). The Surface Interval Time colon will flash during the first 10 minutes after a NORM/GAUG dive (Fig. 34), or 1 minute after a FREE dive.

During the first 10 minutes after a dive, the SURF MAIN screen for the Operating Mode selected prior to the dive (NORM, GAUG, or FREE) remains on display as the Default SURF MAIN screen. Main Watch Time can be viewed for 3 seconds during that period by pressing and releasing the M button momentarily (less than 2 seconds).

Fig. 34 - NORM SURFACE

MODE

(Post Dive Unit WET)

When the 10 minute Surface Time has elapsed, the Local Default Watch TIME screen (Main or Alternate Time) will replace the Surface Mode display. The SURF MAIN screen can then be accessed by pressing the M button for 2 seconds.

Fig. 35 - NORM SURF MAIN

NORM SURF MAIN

, information provided includes (Fig. 35):

> LINK symbol, if the Receiver is successfully Linked with a

Transmitter. (Note that this is the same icon used in Watch Mode to signify that the Daily Alarm is set On.)

> Graphic NORM alternating with the Altitude Level graphic

SEA (or EL2 through EL13) and WET (if the unit is wet), each On 3 seconds then 1/4 second blank.

> Battery icon if an ATOM Low Battery W arning Condition

exists, flashing if Too Low

> Tank Pressure and symbol PSI (or BAR), if the Receiver is

successfully Linked with an active Transmitter .

> Symbol DIVE and Number of that dive (0 if no dive has

been made yet).

> Symbols TIME and SURF, and Surface Interval Time

(hour:minutes) . > NITROX symbol, if any GAS is set for a Nitrox dive. > Tank 1 icon representing GAS 1, which is the default start

Gas and default Gas 10 minutes after a dive. > Tissue Loading Bar Graph (TLBG), if any after a NORM or

FREE dive.

NORM SURF MAIN

- Button Operations:

 Pressing the L button will activate the Backlight.  Pressing and releasing the A button repeatedly (< 2 seconds

each time) will step through the NORM Surface Sequence -

SURF > PLAN > FLY > SAT > LOG > HISTORY.

 Depressing and holding the A button for 2 seconds will

access the Surface Secondary Display for 3 seconds followed by the Surface Alternate Display for 3 seconds.

 Depressing both the A and S buttons simultaneously for 2

seconds will access the SET Menu (F > A > U) and an A TOM Serial Number display.

SURF > SET FO2 > SET Alarms > SET Utilities > SN

 Pressing and holding the M button for 2 seconds will

access the GAUG SURF MAIN screen, then another 2 second press will access the FREE SURF MAIN screen.

NORM SURF > GAUG SURF > FREE SURF

 Pressing and releasing the M button momentarily (< 2

seconds) will revert to the Watch TIME screen.

Upper/Left - Mode (M) Upper/Right - Select (S) Lower/Right - Light (L) Lower/Left - Advance (A)

Button Locations

Fig. 36 - ATOM BATT GOOD

 Depressing and holding the S button for 2 seconds while

viewing the NORM Surface screen will activate the

A TOM's Receiver and access a series of screens that will

indicate the Status of the system's Batteries and Pressures of

the Tanks in use. Transmitter Battery Status is not displayed

for TMT 2 and 3 if TMT 2-3 USE is set for BUD (Buddy

Check).  If a Transmitter is not active and linked to the ATOM, the

message NotAvAil (Not Available) will appear.  Each screen will be displayed for 3 seconds. AT O M

Battery Status, then Transmitter 1 Battery Status and Tank

Pressure, then Transmitter 2 Battery Status and Tank

Pressure, then Transmitter 3 Battery Status and Tank

Pressure.  The screen will then revert to NORM SURF MAIN Display.

Fig. 37 - ATOM BATT LOW

ATOM BATTERY STATUS

, information includes (Fig. 36/37): > Graphics ATOM and bAt > Graphic Good or Lo > Battery icon, if a Low Battery Warning Condition exists.

Flashing if an Alarm Condition exists.

Transmitters (referred to as TMTs) that are active and Linked will transmit signals conveying Tank Pressure and Battery Status for display on the Status screens. If a TMT is not active or active but not Linked, the Status screen(s) will display Not Available.

TRANSMITTER STATUS

, information includes:

> Graphics TMT1 (then TMT2 and TMT3), identifying the

reporting Transmitter, and bAt. > Graphic Good or Lo, or NotAvAil (Fig. 38A/38B) > Battery icon, if a Low Battery Warning Condition exists.

Flashing if an Alarm Condition exists. > Link icon and Tank Pressure for the TMT reporting and

symbol PSI (or BAR).

NOTE: If TMT 2-3 USE is set for BUD (Buddy Pressure Checks), TMT2 and TMT3 screens will not display Battery Status (only Pressure).

Fig. 38A - TMT2 BATT LOW

NORM SURF SECONDARY

, information includes (Fig. 39):

> Day of the Week graphic (SAT, SUN, MON, TUE, WED,

THU, FRI). > Temperature with degree icon and graphic F (or C) > Time of Day (hour: minute), seconds (:xx) on middle row.

 After 3 seconds, the NORM SURF ALTERNATE screen will

appear.  Pressing and releasing the A button momentarily (< 2

seconds) will revert to the NORM SURF MAIN screen.  Pressing the L button will activate the Backlight.

Fig. 38B - TMT3 BATT

(Not Available)

Fig. 39 - NORM SURF SEC

Fig. 40 - NORM SURF ALT

NORM SURF ALTERNATE

, information includes (Fig. 40):

> Bar Graph representing Oxygen accumulation with the

O2BG icon.

> LINK symbol, if the A TOM's Receiver is successfully Linked

with a Transmitter. > Altitude Level graphic SEA (or EL2 through EL13). > Battery icon if an ATOM Low Battery W arning Condition

exists, flashing if Too Low > Tank Pressure and symbol PSI (or BAR), if the Receiver is

successfully Linked with an active Transmitter . > Symbol DIVE and Number of that dive. > GAS 1 FO2 Set Point and symbol FO2. > NITROX symbol, if any GAS is set for a Nitrox dive. > Tank 1 icon representing GAS 1, which is the default start

Gas and default Gas 10 minutes after a dive.

 The display will revert to the NORM SURF MAIN screen

after 3 seconds.  Pressing and releasing the A button momentarily (< 2

seconds) will revert to the NORM SURF MAIN screen.  Pressing the L button will activate the Backlight.

GAUG and FREE Operating Modes are

described in separate sections after NORM Mode.

NORM AND GAUG SURFACE SET MODES

NORM/GAUG Set Mode Sequence:

SURF MAIN > SET F > SET A > SET U > ATOM Serial Number.

Access and step through of the sequence is gained by repeated simultaneous 2 second presses of the A and S buttons.

Alarms (Set A) and Utilities (Set U) Set Points can also be set/ changed using the PC Settings Upload program. FO2 (Set F) entries must be made using only the push buttons.

SET F GROUP (FO2)

Set F Sequence:

SET F > FO2 GAS 1 > FO2 GAS 2 > FO2 GAS 3 > FO2 50% Default.

> Depressing the A and S buttons simultaneously for 2

seconds while the NORM or GAUG SURF MAIN screen is displayed will access SET F identified by the graphic SETF (Fig. 41).

> Pressing and releasing the A button momentarily (< 2

seconds) while SET F is displayed will advance to SET FO2 (GAS 1) with the Set Point flashing.

The ATOM reverts to the last Settings entered/saved when 24 hours elapse without a dive or after a dive.

Fig. 41 - SET F

Setting FO2 for NORM Nitrox Dives:

For each value of FO2, the Maximum Operating Depth (MOD) that can be achieved for the PO2 Alarm Set Point limit previously set, will be displayed.

When the FO2 50% DEFAULT is set ON and FO2 GAS 1 is set for a numerical value, 10 minutes on the surface after that dive, the FO2 for GAS 1 will be displayed as 50 and further dives will be calculated based on 50% O2 for oxygen calculations and 21% O2 for Nitrogen calculations (79% Nitrogen) unless the FO2 for GAS 1 is set before the dive.

FO2 for GAS 1 continues to reset to the FO2 50% DEFAULT after subsequent repetitive dives until 24 hours elapse after the last dive, or the FO2 50% DEFAULT is turned OFF in the Set FO2 50% DEFAULT ON/OFF MODE.

When the FO2 50% DEFAULT is set OFF, the ATOM will remain set at the last FO2 GAS 1 Set Points for that series of repetitive dives.

The default FO2 for GAS 1 each new dive Period is AIR.

When FO2 for GAS 1 is set for AIR, the calculations are the same as when it is set to an FO2 of 21%. When FO2 for GAS 1 is set to AIR, it remains set for AIR until it is set for a numerical FO2 value (21 to 50%).

When FO2 is set only to AIR, the O2 Bar Graph is not displayed at any time during a dive or on the surface. PO2 values and/or warnings will not be displayed during the dive.

FREE Dive nitrogen calculations are based on AIR and not affected by these FO2 Settings.

Maximum Operating Depths affected by the PO2 limit set will not be displayed when FO2 for GAS 1 is set to AIR.

Internally, the ATOM keeps track of the oxygen loading so that if FO2 for GAS 1 is subsequently set for a numerical value, the oxygen loading for previous AIR dives will be accounted for in the next Nitrox dive (during that dive period and series of repetitive dives).

Once FO2 GAS 1 is set for a numerical value (21 to 50%) and a dive is made, the AIR option is disabled until 24 hours elapse after the last dive. The AIR option will not be displayed in Set FO2 GAS 1 until a full 24 hour Surface Interval has elapsed.

If FO2 for GAS 1 is set for 21%, it will remain set for 21% for that series of dives until set for a higher numerical value.

If the FO2 50% DEFAULT is set OFF, FO2 for GAS 2 and 3 will remain at their respective Set Points previously selected until they are changed. If the FO2 50% DEFAULT is set ON, FO2 for GAS 2, and 3 will Default to 50% after the dive.

The ATOM is programmed to prevent FO2 for GAS 2 and 3 from being set at values lower than the FO2 Set Point for GAS 1. GAS 2 and 3 can only be set to values equal to or higher than the FO2 Set Points of GAS 1 and 2, respectively.

When setting FO2 for GAS 2 and 3, the lowest values available will be the Set Point of the previous Gas set (e.g., If FO2 GAS 1 is set for 32%, FO2 GAS 2 can only be set at values from 32 to 100%. Likewise, FO2 GAS 3 will depend on the setting for FO2 GAS 2.

SET FO2 GAS 1,

information includes: > Graphic GAS1 > PO2 Alarm Set Point with graphic PO2 > Symbol FO2 and FO2 Set Point value, flashing > Tank 1 icon representing GAS 1 > Symbol NITROX (if set for a numerical value). > Max Depth allowed for the PO2 Alarm Set (if 21 to 50%)

Fig. 42 - SET FO2 GAS1

(AIR setting)

Fig. 43 - SET FO2 GAS1

(32% O2 setting)

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

flashing will scroll the Set Points from AIR (Fig. 42) to 21 through 50% in 1% increments, at a rate of 8 per second.

 Hint: The scroll will stop when the button is released, or

momentarily at 32% (even if the button is held depressed).

 Pressing and holding the S button will resume the scroll from

32 (Fig. 43) through 50%, then stop at AIR (or 21%).

 Pressing and releasing the S button will advance FO2 in

increments of 1% per press of the button.

 Pressing and releasing the A button momentarily (< 2

seconds) will save the setting and/or advance to SET FO2 GAS 2 with the Set Point flashing.

 Pressing and releasing the A button momentarily and

repeatedly (< 2 seconds) will step through the other SET F screens.

 Depressing the A and S buttons simultaneously for 2

seconds will save the setting and revert back to the SET F screen.

 Depressing and holding the M button for 2 seconds or if no

button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

SET FO2 GAS 2,

information includes: > Graphic GAS2 > PO2 Alarm Set Point with graphic PO2 > Symbol FO2 and FO2 Set Point value, flashing > Tank 2 icon representing GAS 2 > Symbol NITROX (if set for a numerical value). > Max Depth allowed for the PO2 Alarm Set (if 21 to 100%)

 Depressing and holding the S button while the FO2 Set

Point is flashing will scroll the Set Point from AIR to 21 through 100% in 1% increments, at a rate of 8 per second.

 The scroll will start at the FO2 GAS 1 Set Point and stop

when the button is released, or momentarily at 50% (Fig.

44), then 80% (even if the button is held depressed).

 Depressing and holding the S button will resume the scroll

through 100%, then stop at AIR (or 21 or the GAS1 setting).

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

advance FO2 in increments of 1% per press of the button.

 Pressing and releasing the A button momentarily (< 2

seconds) will save the setting and/or advance to SET FO2 GAS 3 with the Set Point flashing.

Fig. 44 - SET FO2 GAS2

(50% O2 setting)

 Pressing and releasing the A button momentarily and

repeatedly (< 2 seconds) will step through the other SET F screens.

 Depressing the A and S buttons simultaneously for 2

seconds will save the setting and revert back to the SET F screen.

 Depressing and holding the M button for 2 seconds or if no

button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

Fig. 45 - SET FO2 GAS3

(100% O2 setting)

SET FO2 GAS 3

information includes: > Graphic GAS3 > PO2 Alarm Set Point with graphic PO2 > Symbol FO2 and FO2 Set Point value, flashing > Tank 3 icon representing GAS 3 > Symbol NITROX (if set for a numerical value). > Max Depth allowed for the PO2 Alarm Set (if 21 to 100%)

 Depressing and holding the S button while the FO2 Set

Point is flashing will scroll the Set Point from AIR to 21 through 100% (Fig. 45) in 1% increments, at a rate of 8 per second.

 The scroll will start at the FO2 GAS 2 Set Point and stop

when the button is released, or momentarily at 50% then 80% (even if the button is held depressed).

 Depressing and holding the S button will resume the scroll

through 100%, then stop at AIR (or 21 or the GAS2 setting).

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

advance FO2 in increments of 1% per press of the button.

 Pressing and releasing the A button momentarily (< 2

seconds) will save the setting and/or advance to SET FO2 50% DEF A U LT with the Set Point flashing.

 Pressing and releasing the A button momentarily and

repeatedly (< 2 seconds) will step through the other SET F screens.

 Depressing the A and S buttons simultaneously for 2

seconds will save the setting and revert back to the SET F screen.

 Depressing and holding the M button for 2 seconds or if no

button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

SET FO2 50% DEFAULT

information includes (Fig. 46): > Graphics DFLT and 50 > Set Point graphic OFF (or ON), flashing. > Symbols FO2 and NITROX.

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

toggle between OFF and ON.

Fig. 46 - SET FO2 DEFAULT

Fig. 47 - SET A

 Pressing and releasing the A button momentarily (< 2

seconds) will save the setting and revert to the SET F screen.

 Pressing and releasing the A button momentarily and

repeatedly (< 2 seconds) will step through the other SET F screens.

 Depressing and holding the M button for 2 seconds or if no

button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

SET A GROUP (NORM/GAUG ALARMS)

Set A Sequence:

SET A > Audible > Depth > EDT > TLBG > DTR > Turn Pressure > End Pressure > PO2

HINT: The SET A Group can also be set/changed using the PC Settings Upload program.

> SET A Settings remain at the values set until changed. > Depressing the A and S buttons simultaneously for 4

seconds while NORM or GAUG SURF MAIN is displayed will access SET A identified by the graphic SET A (Fig. 47).

> Pressing and releasing the A button momentarily (< 2

seconds) while SET A is displayed will advance to SET AUDIBLE ALARM with the Set Point flashing.

SET AUDIBLE ALARM

This option allows the Audible Alarms and the associated red warning LED function to be disabled.

Some cautionary situations will cause the Audible alarm to sound and the LED to flash even if this feature is set to OFF.

SET AUDIBLE ALARM

information includes (Fig. 48): > Graphic AUD > Set Point graphic ON (or OFF), flashing.

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

toggle between ON and OFF.

 Pressing and releasing the A button momentarily (< 2

seconds) will save the setting and/or advance to the SET DEPTH ALARM screen with the Set Point flashing.

 Pressing and releasing the A button momentarily and

repeatedly (< 2 seconds each time) will step through the other SET A screens.

 Depressing the A and S buttons simultaneously for 2

seconds will save the setting and revert back to the SET A screen.

 Depressing and holding the M button for 2 seconds or if no

button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

Fig. 48 - SET AUDIBLE

SET DEPTH ALARM

information includes (Fig. 49): > Graphic DPTH > Symbols MAX and FT (or M) > Set Point graphic value, flashing.

 Pressing and releasing the S button momentarily (< 2

seconds) will step through the Set Points from 30 to 330 FT (10 to 100 M) in 10 FT (1 M) increments at a rate of 1 Set Point per press of the button.

 Depressing and holding the S button will scroll through the

Set Points at a rate of 4 Set Points per second until it is released.

 Pressing and releasing the A button momentarily (< 2

seconds) will save the setting and/or advance to the SET EDT (Elapsed Dive Time) ALARM screen with the Set Point flashing.

 Pressing and releasing the A button momentarily and

repeatedly (< 2 seconds each time) will step through the other SET A screens.

 Pressing the A and S buttons simultaneously for 2 seconds

will save the setting and revert back to the SET A screen.

 Depressing and holding the M button for 2 seconds or if no

button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

Fig. 49 - SET DEPTH

FREE Mode has separate Depth Alarms.

SET EDT (ELAPSED DIVE TIME) ALARM

Information includes (Fig. 50):

> Graphic EDT > Symbols DIVE and TIME. > Set Point value (hr:min), flashing.

 Pressing and releasing the S button momentarily (< 2

seconds) will increase the Set Point from 0:10 to 3:00 (hours:minutes) in 5 minute (:05) increments.

 Depressing and holding the S button will scroll through the

Set Points at a rate of 4 Set Points per second until it is released.

 Pressing and releasing the A button momentarily (< 2

seconds) will save the setting and/or advance to the SET TLBG (Tissue Loading Bar Graph) ALARM screen with the Set Point flashing.

 Pressing and releasing the A button momentarily and

repeatedly (< 2 seconds) will step through the other SET A screens.

 Depressing the A and S buttons simultaneously for 2 seconds

will save the setting and revert back to the SET A screen.

 Depressing and holding the M button for 2 seconds or if no

button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

FREE Mode has a separate EDT Alarm.

Fig. 50 - SET EDT

Setting the TLBG Alarm to activate before the ATOM enters DECO is highly recommended.

SET TLBG (TISSUE LOADING BAR GRAPH) ALARM

Information includes (Fig. 51):

> Graphic TLBG > TLBG Set Point (segments), flashing.

 Pressing and releasing the S button momentarily (< 2

seconds) will decrease the Set Point from All 5 segments (Deco) to 1 in increments of 1 segment.

 Depressing and holding the S button will scroll through the

Set Points at a rate of 4 Set Points per second until it is released.

 Pressing and releasing the A button momentarily (< 2

seconds) will save the setting and/or advance to the SET DTR (Dive Time Remaining) ALARM screen with the Set Point flashing.

 Pressing and releasing the A button momentarily and

repeatedly (< 2 seconds each time) will step through the other SET A screens.

 Depressing the A and S buttons simultaneously for 2

seconds will save the setting and revert back to the SET A screen.

 Depressing and holding the M button for 2 seconds or if no

button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

Fig. 51 - SET TLBG

FREE Mode has a separate TLBG Alarm.

SET DTR (DIVE TIME REMAINING) ALARM

Information includes (Fig. 52):

> Graphic DTR > Symbols AIR, TIME, NDC, and O2. > Set Point value, flashing.

 Pressing and releasing the S button momentarily (< 2

seconds) will increase the Set Point from 0:00 to 0:20 (:minutes) in 1 minute (0:01) increments.

 Depressing and holding the S button will scroll through the

Set Points at a rate of 4 Set Points per second until it is released.

 Pressing and releasing the A button momentarily (< 2

seconds) will save the setting and/or advance to the SET TURN PRESSURE ALARM screen with the Set Point flashing.

 Pressing and releasing the A button momentarily and

repeatedly (< 2 seconds each time) will step through the other SET A screens.

 Depressing the A and S buttons simultaneously for 2

seconds will save the setting and revert back to the SET A screen.

 Depressing and holding the M button for 2 seconds or if no

button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

Whichever Time (No Decompression, O2, or Air Time Remain- ing) decreases to the Alarm Set Point will activate the Alarm.

Fig. 52 - SET DTR

The TURN Pressure Alarm only applies to TMT 1.

Fig. 53 - SET TURN

SET TURN PRESSURE ALARM

(for Transmitter 1 only)

Information includes (Fig. 53):

> Graphic TURN > Set Point OFF or a numeric value, flashing. > Symbol PSI (or M)

 Pressing and releasing the S button momentarily (< 2

seconds) will step through the Set Points from OFF to 1000 to 3000 PSI (70 to 205 BAR) in 250 PSI (5 BAR) increments.

 Depressing and holding the S button will scroll through the

Set Points at a rate of 4 Set Points per second until it is released.

 Pressing and releasing the A button momentarily (< 2

seconds) will save the setting and/or advance to the SET END PRESSURE ALARM screen with the Set Point flashing.

 Pressing and releasing the A button momentarily and

repeatedly (< 2 seconds each time) will step through the other SET A screens.

 Depressing the A and S buttons simultaneously for 2

seconds will save the setting and revert back to the SET A screen.

 Depressing and holding the M button for 2 seconds or if no

button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

SET END PRESSURE ALARM

information includes (Fig. 54): > Graphic END > Set Point numeric value, flashing. > Symbol PSI (or M)

 Pressing and releasing the S button momentarily (< 2

seconds) will increase the Set Point from 300 to 1500 PSI (20 to 105 BAR) in 100 PSI (5 BAR) increments.

 Depressing and holding the S button will scroll through the

Set Points at a rate of 4 Set Points per second until it is released.

 Pressing and releasing the A button momentarily (< 2

seconds) will save the setting and/or advance to the SET PO2 ALARM screen with the Set Point flashing.

 Pressing and releasing the A button momentarily and

repeatedly (< 2 seconds each time) will step through the other SET A screens.

 Depressing the A and S buttons simultaneously for 2

seconds will save the setting and revert back to the SET A screen.

 Depressing and holding the M button for 2 seconds or if no

button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

The END Pressure Alarm will activate when Pressure in the Tank being used at the time (TMT 1, 2 , or 3) decreases to the Alarm Set Point.

Fig. 54 - SET END PRESSURE

Setting the PO2 Alarm to activate before reaching the Max allowed limit of

1.60 ATA is highly recommended.

Fig. 55 - SET PO2

SET PO2 ALARM

information includes (Fig. 55): > Graphics PO2 and AtA > Set Point value, flashing. > Symbol MAX

 Pressing and releasing the S button momentarily (< 2

seconds) will increase the Set Point from 1.20 (ATA) to 1.60 (ATA) in .10 (ATA) increments.

 Depressing and holding the S button will scroll through the

Set Points at a rate of 4 Set Points per second until it is released.

 Pressing and releasing the A button momentarily (< 2

seconds) will save the setting and/or advance to the SET A screen.

 Pressing and releasing the A button momentarily and

repeatedly (< 2 seconds each time) will step through the other SET A screens.

 Depressing the A and S buttons simultaneously for 2

seconds will save the setting and revert back to the SET A screen.

 Depressing and holding the M button for 2 seconds or if no

button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

SET U GROUP (UTILITIES)

Set U Sequence:

SET U > Wet Activation > Units > Safety Stop > Conservative Factor > Backlight Duration > Sampling Rate > TMT 1 > TMT 2-3 USE > TMT 2 (or BUD 1) > TMT 3 (or BUD 2).

HINT: The SET U Group can also be set/changed using the PC Settings Upload program.

FREE Mode utilizes these settings for Wet Activa- tion, Units, and Backlight Duration. It has a separate Sampling Rate fixed at a 1 second interval not affected by the SET U setting.

> SET U Settings remain at the values set until changed. > Depressing the A and S buttons simultaneously for 6

seconds while the NORM or GAUG SURF MAIN screen is displayed, will access SET U identified by the graphic SETU (Fig. 56).

> Pressing and releasing the A button momentarily (< 2

seconds) while SET U is displayed will advance to SET WET ACTIVATION with the Set Point flashing.

TMT is the abbrevia- tion for Transmitter.

BUD is the abbrevia- tion for Buddy.

Fig. 56 - SET U

Prior to the first dive of a repetitive series, WET Activa- tion must be set ON for the ATOM to enter Dive Mode while operating as a Watch.

Fig. 57 - SET WET

ACTIVATION

SET WET ACTIVATION

information includes (Fig. 57): > Graphic WET > Set Point graphic ON (or OFF) flashing.

 Pressing and releasing the S button will toggle between ON

and OFF.

 Pressing and releasing the A button momentarily (< 2

seconds) will save the setting and/or advance to the SET UNITS screen with the Set Point flashing.

 Pressing and releasing the A button momentarily and

repeatedly (< 2 seconds each time) will step through the other SET U screens.

 Depressing the A and S buttons simultaneously for 2

seconds will save the setting and revert back to the SET U screen.

 Depressing and holding the M button for 2 seconds or if no

button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

HINT: To change this setting while operating in FREE Mode, first access the NORM SURF Mode.

SET UNITS

information includes (Fig. 58): > Graphic UNIT > Set Point symbols/graphics PSI, F, and FT (or BAR, C, and

M), flashing.

 Pressing and releasing the S button will toggle between

Imperial (F, FT, PSI) and Metric (C, M, BAR).

 Pressing and releasing the A button momentarily (< 2

seconds) will save the setting and/or advance to the SET SAFETY STOP screen with the Time Set Point flashing.

 Pressing and releasing the A button momentarily and

repeatedly (< 2 seconds each time) will step through the other SET U screens.

 Depressing the A and S buttons simultaneously for 2

seconds will save the setting and revert back to the SET U screen.

 Depressing and holding the M button for 2 seconds or if no

button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

HINT: To change this setting while operating in FREE Mode, first access the NORM SURF Mode.

UNITS set will apply to NORM, GAUG, and FREE Modes.

Fig. 58 - SET UNITS

Refer to page 106 for a description of the No Decompres- sion dive mode Safety Stop feature.

Fig. 59 - SET SAFETY STOP

SET NORM SAFETY STOP

information includes (Fig. 59): > Graphic SAFE > Symbols STOP and TIME. > Safety Stop Time Set Point, flashing.

> Safety Stop Depth Set Point and symbol FT (or M).  Pressing and releasing the S button momentarily (< 2

seconds each time) will step through the Stop Time Set Points of OFF, 3:00, and 5:00 (minutes:seconds).

 Pressing and releasing the A button momentarily (< 2

seconds) will save the Stop Time setting and the Stop Depth Set Point will flash, or if Stop Time is set OFF advance to the SET CONS (Conservative Factor) screen with the Set Point flashing.

 Pressing and releasing the S button momentarily (< 2

seconds each time) will step through the Stop Depth Set Points of 10, 15, and 20 FT (or 3, 4, 5, and 6 M).

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

will save the Safety Stop settings and/or advance to the SET CONS screen with the Set Point flashing.

 Pressing the A button momentarily and repeatedly (< 2

seconds) will step through the other SET U screens.

 Depressing the A and S buttons simultaneously for 2

seconds will save the settings and revert back to the SET U screen.

 Depressing and holding the M button for 2 seconds or if no

button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

SET CONSERVATIVE FACTOR

information includes (Fig. 60): > Graphic CONS > Set Point ON (or OFF), flashing. > Symbols TIME and NDC.

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

toggle between ON and OFF.

 Pressing and releasing the A button momentarily (< 2

seconds) will save the setting and/or advance to the SET BACKLIGHT DURATION screen with the Set Point flashing.

 Pressing and releasing the A button momentarily and

repeatedly (< 2 seconds each time) will step through the other SET U screens.

 Depressing the A and S buttons simultaneously for 2

seconds will save the setting and revert back to the SET U screen.

 Depressing and holding the M button for 2 seconds or if no

button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

Use the Conserva- tive Factor option to help reduce your exposure to Decom- pression Sickness.

Fig. 60 - SET CONSERVA-

TIVE FACTOR

The Backlight will not remain On for the additional Duration time set if the L button is held depressed longer than 10 seconds.

Fig. 61 - SET BACKLIGHT

DURATION

NOTE: When the Conservative Factor is set ON, the No Deco Limit times are reduced to values equivalent to those that would be available at the next higher 3000 foot (915 meter) Altitude. Refer to the tables on Pages 166/167.

SET BACKLIGHT DURATION

information includes (Fig. 61): > Graphic GLO. > Symbol TIME. > Set Point, flashing.

 Pressing and releasing the S button momentarily (< 2

seconds each time) will step through the Set Points of 0, 5, and 10 (:XX seconds).

 Pressing and releasing the A button momentarily (< 2

seconds) will save the setting and/or advance to the SET SAMPLING RATE screen with the Set Point flashing.

 Pressing and releasing the A button momentarily and

repeatedly (< 2 seconds each time) will step through the SET U screens.

 Depressing the A and S buttons simultaneously for 2

seconds will save the setting and revert back to the SET U screen.

 Depressing and holding the M button for 2 seconds or if no

button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

HINT: To change the Duration while operating in

FREE Mode, first access the NORM SURF Mode.

SET SAMPLING RATE

information includes (Fig. 62): > Graphic SAMP > Symbol TIME. > Set Point, flashing.

 Pressing and releasing the S button momentarily (< 2

seconds) will step through the Set Points of 2, 15, 30, 60 (:XX seconds).

 Depressing and holding the S button will scroll through the

Set Points at a rate of 4 Set Points per second until it is released.

 Pressing and releasing the A button momentarily (< 2

seconds) will save the setting and/or advance to the SET TMT 1 screen with the Set Point flashing.

 Pressing and releasing the A button momentarily and

repeatedly (< 2 seconds each time) will step through the other SET U screens.

 Depressing the A and S buttons simultaneously for 2

seconds shall save the setting and revert back to the SET U screen.

 Depressing and holding the M button for 2 seconds or if no

button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

SAMPLING RATE is the frequency (time interval) at which data is sampled and stored in memory for subsequent down- load to the PC OceanLog program.

FREE Mode has a fixed 1 second Sampling Rate.

Fig. 62 - SET SAMPLING

RATE

TMT 1 is the Default Transmitter while on the Surface, prior to a dive and 10 minutes after a dive.

Fig. 63 - SET TMT 1

SET TMT 1

information includes (Fig. 63): > Graphics TMT1 and ON (or OFF) flashing. > Set Point (Transmitter's Serial Number (Link Code).

 Pressing and releasing the S button momentarily (< 2

seconds) will toggle between ON and OFF.

 Pressing and releasing the A button momentarily (< 2

seconds) will accept the ON/OFF selection.

 If OFF is selected, SET TMT 2 and TMT 3 will be bypassed

and the operation reverts to the SET U screen.  If ON is selected, the first (left) digit of the Code will flash.  Pressing and releasing the S button momentarily and

repeatedly (< 2 seconds each time) will increase the First

Digit from 0 to 9 in increments of 1.  Depressing and holding the S button will scroll through the

Set Points at a rate of 4 per second.  Pressing and releasing the A button (< 2 seconds) will

accept the First Digit of the Code and/or advance to the

Second Digit which will be flashing.  Pressing and releasing the S button shall increase the

Second Digit from 0 to 9 in increments of 1.  Depressing and holding the S button will scroll through the

Set Points at a rate of 4 per second.  Pressing and releasing the A button (< 2 seconds) will

accept the Second Digit of the Code and/or advance to the

Third Digit which will be flashing.

 Pressing and releasing the S button momentarily and repeatedly (< 2 seconds each

time) will increase the Third Digit from 0 to 9 in increments of 1.

 Depressing and holding the S button will scroll through the Set Points at a rate of 4

per second.

 Pressing and releasing the A button (< 2 seconds) will accept the Third Digit of the

Code and/or advance to the Fourth Digit which will be flashing.

 Pressing and releasing the S button momentarily and repeatedly (< 2 seconds each

time) will increase the Fourth Digit from 0 to 9 in increments of 1.

 Depressing and holding the S button will scroll through the Set Points at a rate of 4

per second.

 Pressing and releasing the A button (< 2 seconds) will accept the Fourth Digit of the

Code and/or advance to the Fifth Digit which will be flashing.

 Pressing and releasing the S button momentarily and repeatedly (< 2 seconds each

time) will increase the Fifth Digit from 0 to 9 in increments of 1.

 Depressing and holding the S button will scroll through the Set Points at a rate of 4

per second.

 Pressing and releasing the A button will accept the Fifth Digit of the Code and/or

advance to the Sixth Digit which will be flashing.

 Pressing and releasing the S button momentarily and repeatedly (< 2 seconds each

time) will increase the Sixth Digit from 0 to 9 in increments of 1.

 Depressing and holding the S button will scroll through the Set Points at a rate of 4

per second.

 Pressing and releasing the A button (< 2 seconds) will accept the TMT 1 Link Code

and/or advance to SET TMT 2 (or BUD 1) with the Set Point flashing.

 Depressing the A and S buttons simultaneously for 2 seconds will save the setting and

revert back to the SET U screen.

Fig. 64 - SET TMT 2-3 USE

SET TMT 2-3 USE

information includes (Fig. 64): > Graphics TMT and 2-3 USE. > Set Point graphic SELF (or bud) flashing.

 Pressing and releasing the S button momentarily (< 2

seconds) will toggle between SELF and bud.

 Pressing and releasing the A button momentarily (< 2

seconds) will accept the setting and/or advance to SET TMT 2 (or BUD 1) with ON or OFF flashing.

 Depressing the A and S buttons simultaneously for 2

seconds shall save the setting and revert back to the SET U screen.

 Depressing and holding the M button for 2 seconds or if no

button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

When set for SELF, TMT 2 and TMT 3 are associated with Transmitters to be used by a diver using the ATOM for Gas Switching.

When set for BUD, TMT 1 is associated with the user of the ATOM and TMT 2 and TMT 3 are associated with Transmitters to be used by other divers (Buddies) whose Pressure can be checked by the user of the ATOM.

SET TMT 2 (or BUD 1)

information includes (Fig. 65): > Graphics TMT2 (or BUD1) and ON (or OFF) flashing. > Set Point (Transmitter's Serial Number (Link Code)).

 Pressing and releasing the S button momentarily (< 2

seconds) will toggle between ON and OFF.

 Pressing and releasing the A button momentarily (< 2

seconds) will accept the ON/OFF selection.

 If OFF is selected, SET TMT 3 (or BUD 2) will be bypassed

and the operation reverts to the SET U screen.  If ON is selected, the first (left) digit of the Code will flash.  Pressing and releasing the S button momentarily and

repeatedly (< 2 seconds each time) will increase the First

Digit from 0 to 9 in increments of 1.  Depressing and holding the S button will scroll through the

Set Points at a rate of 4 per second.  Pressing and releasing the A button (< 2 seconds) will

accept the First Digit of the Code and/or advance to the

Second Digit which will be flashing.  Pressing and releasing the S button shall increase the

Second Digit from 0 to 9 in increments of 1.  Depressing and holding the S button will scroll through the

Set Points at a rate of 4 per second.  Pressing and releasing the A button (< 2 seconds) will

accept the Second Digit of the Code and/or advance to the

Third Digit which will be flashing.

If TMT 2-3 USE is set for Gas

Switching

- OR -

If TMT 2-3 USE is set for

Buddy Presssure Check

Fig. 65 - SET TMT 2

 Pressing and releasing the S button momentarily and repeatedly (< 2 seconds each

time) will increase the Third Digit from 0 to 9 in increments of 1.  Depressing and holding the S button will scroll through the Set Points at a rate of 4

per second.  Pressing and releasing the A button (< 2 seconds) will accept the Third Digit of the

Code and/or advance to the Fourth Digit which will be flashing.  Pressing and releasing the S button momentarily and repeatedly (< 2 seconds each

time) will increase the Fourth Digit from 0 to 9 in increments of 1.  Depressing and holding the S button will scroll through the Set Points at a rate of 4

per second.  Pressing and releasing the A button (< 2 seconds) will accept the Fourth Digit of the

Code and/or advance to the Fifth Digit which will be flashing.  Pressing and releasing the S button momentarily and repeatedly (< 2 seconds each

time) will increase the Fifth Digit from 0 to 9 in increments of 1.  Depressing and holding the S button will scroll through the Set Points at a rate of 4

per second.  Pressing and releasing the A button will accept the Fifth Digit of the Code and/or

advance to the Sixth Digit which will be flashing.  Pressing and releasing the S button momentarily and repeatedly (< 2 seconds each

time) will increase the Sixth Digit from 0 to 9 in increments of 1.  Depressing and holding the S button will scroll through the Set Points at a rate of 4

per second.  Pressing and releasing the A button (< 2 seconds) will accept the TMT 2 (or BUD 1)

Link Code and/or advance to SET TMT 3 (or BUD 2) with ON or OFF flashing.  Depressing the A and S buttons simultaneously for 2 seconds will save the setting and

revert back to the SET U screen.

SET TMT 3 (or BUD 2)

information includes (Fig. 66): > Graphics TMT3 (or BUD2), and ON (or OFF) flashing. > Set Point (Transmitter's Serial Number (Link Code)).

 Pressing and releasing the S button momentarily (< 2

seconds) will toggle between ON and OFF.

 Pressing and releasing the A button momentarily (< 2

seconds) will accept the ON/OFF selection.  If OFF is selected, the operation reverts to the SET U screen.  If ON is selected, the first (left) digit of the Code will flash.  Pressing and releasing the S button momentarily and

repeatedly (< 2 seconds each time) will increase the First

Digit from 0 to 9 in increments of 1.  Depressing and holding the S button will scroll through the

Set Points at a rate of 4 per second.  Pressing and releasing the A button (< 2 seconds) will

accept the First Digit of the Code and/or advance to the

Second Digit which will be flashing.  Pressing and releasing the S button shall increase the

Second Digit from 0 to 9 in increments of 1.  Depressing and holding the S button will scroll through the

Set Points at a rate of 4 per second.  Pressing and releasing the A button (< 2 seconds) will

accept the Second Digit of the Code and/or advance to the

Third Digit which will be flashing.

If TMT 2-3 USE is set for Gas

Switching

- OR -

If TMT 2-3 USE is set for

Buddy Presssure Check

Fig. 66 - SET TMT 3