Oceanic OCi User manual

1
OCi OPERATING MANUAL
© 2002 Design, 2013 Doc. No. 12-5335-r02 (9/12/13)
OCi
DIVE COMPUTER
OPERATING MANUAL

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OCi OPERATING MANUAL
© 2002 Design, 2013 Doc. No. 12-5335-r02 (9/12/13)
Welcome
to
OCEANIC
and
Thank You
for choosing the
OCi

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OCi OPERATING MANUAL
© 2002 Design, 2013 Doc. No. 12-5335-r02 (9/12/13)
NOTICES...............................................................................................4
FEATURES AND FUNCTIONS.............................................................5
DISPLAY LAYOUT............................................................................6
ABBREVIATIONS.............................................................................6
INITIAL ACTIVATION........................................................................6
OVERVIEW.......................................................................................7
MENU SYSTEM................................................................................7
OPERATING MODE STRUCTURES................................................8
PC INTERFACE................................................................................9
AUDIBLE ALARM.............................................................................9
BACKLIGHT ...................................................................................10
Auto Glo.....................................................................................10
POWER SUPPLY, LOW BATTERY................................................10
WATCH MODE....................................................................................11
WATCH DEFAULT TIME.................................................................12
WATCH ALT 1 & 2 ..........................................................................12
WATCH MAIN MENU......................................................................12
Countdown Timer Setup...........................................................13
Chronograph..............................................................................13
Daily Alarm.................................................................................14
Set Time Menu...........................................................................14
Set Date Format.....................................................................14
Set Hour Format....................................................................14
Set Time of Day .....................................................................14
Set Date..................................................................................15
Set ALT (Alternate) Time.......................................................15
Set Default Time....................................................................15
Show Dual Time.....................................................................15
NORM SURFACE MODES.................................................................16
Dive Computer Operating Modes ............................................17
Post Dive................................................................................17
NORM SURFACE FUNCTIONS .....................................................17
NORM SURF MAIN AND ALTS......................................................18
NORM MAIN MENU........................................................................18
Fly/Desat ....................................................................................19
Plan.............................................................................................19
Scuba Log - NORM, GAUG.......................................................20
Set Gas Menu - NORM ..............................................................21
Set Gas 1 FO2/PO2 Alarm.....................................................20
Set Gas 2 (3, 4) FO2/PO2 Alarm ...........................................21
Set FO2 Default......................................................................22
Set Alarms Menu - NORM, GAUG ............................................22
Set Audible Alarm..................................................................22
Set Depth Alarm.....................................................................22
Set EDT Alarm........................................................................22
Set TLBG Alarm.....................................................................23
Set DTR Alarm .......................................................................23
Set Turn Pressure Alarm.......................................................23
Set End Pressure Alarm........................................................23
Set Utilities Menu - NORM, GAUG ...........................................24
Set Water Type.......................................................................24
Set Wet Activation.................................................................24
Set Units.................................................................................24
Set Deep Stop........................................................................24
Set Safety Stop......................................................................25
Set Algorithm.........................................................................25
Set Conservative Factor.......................................................25
Set Backlight Duration..........................................................25
Set Sampling Rate.................................................................26
TMT Menu...............................................................................26
Set TMT 1 (2, 3, 4)..................................................................26
Select OP (Operating) Mode.....................................................26
Scuba History - NORM, GAUG.................................................27
OCI ID (SERIAL NUMBER)............................................................27
CLEAR - NORM..............................................................................27
DIVE MODE FEATURES....................................................................28
NORM DIVE MODE STRUCTURE.................................................29
TRANSMITTER SIGNAL RECEPTION GUIDE..............................29
PROXIMITY OF TRANSMITTERS TO OCI ....................................29
LINK INTERUPTION UNDERWATER............................................29
WET ACTIVATION..........................................................................30
BACKLIGHT ...................................................................................30
Autoglo.......................................................................................30
BAR GRAPHS ................................................................................30
TLBG...........................................................................................30
VARI............................................................................................30
DUAL ALGORITHM........................................................................31
CONSERVATIVE FACTOR.............................................................31
DEEP STOP....................................................................................31
SAFETY STOP................................................................................31
DIVE TIME REMAINING (DTR)......................................................32
No Deco DTR (NDC)..................................................................32
O2 DTR (OTR)............................................................................32
Air Time Remaining (ATR) ........................................................32
RESET DURING DIVE - ERROR....................................................32
NORM DIVE MODES..........................................................................33
NO DECO MAIN, ALTS...................................................................34
DEEP STOP PREVIEW ..................................................................34
DEEP STOP....................................................................................34
SAFETY STOP................................................................................35
DECOMPRESSION ........................................................................36
CONDITIONAL VIOLATION (CV)...................................................36
DELAYED VIOLATION 1 (DV1)......................................................36
DELAYED VIOLATION 2 (DV2)......................................................37
DELAYED VIOLATION 3 (DV3)......................................................37
VIOLATION GAUGE MODE (VGM)................................................38
HIGH PO2 .......................................................................................38
HIGH O2..........................................................................................39
NORM GAS/TMT SWITCHING...........................................................40
DIGITAL GAUGE OP MODE ..............................................................42
DIGITAL GAUG MODE STRUCTURE............................................43
GAUG SURFACE MAIN, ALTS ......................................................44
GAUG MAIN MENU........................................................................44
Fly Time......................................................................................44
Run Timer...................................................................................45
GAUG DIVE MAIN, ALT..................................................................45
Delayed Violation 3 (DV3).........................................................45
GAUG TMT SWITCHING................................................................46
CONTENTS

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OCi OPERATING MANUAL
© 2002 Design, 2013 Doc. No. 12-5335-r02 (9/12/13)
CONTENTS (continued)
FREE & TECH FREE DIVE OP MODES............................................47
OVERVIEW OF OPERATIONS.......................................................48
SURFACE MAIN, ALTS..................................................................49
MAIN MENU....................................................................................49
Select Timer...............................................................................50
Countdown Timer Setup...........................................................50
Log & History Modes - Day, Full...............................................50
Set Alarms Menu .......................................................................50
Set Audible Alarm..................................................................53
Set SRT (Surface Recovery Time) Alarm ............................54
Set RTI (Repeating Time Interval) Alarm.............................54
Set RDI (Repeating Depth Interval) Alarm...........................54
Set DD (Descending Depth) Alarms - FREE........................55
Set DA (Descending Ascending Depth) Alarms - TECH ....55
Set Utilities Menu ......................................................................56
Set Auto Glo - TECH..............................................................56
Set Sampling Rate - TECH....................................................57
Set DSD (Dive Start Depth) ..................................................57
Set BDSI (Between Dive Surface Interval) .........................57
FREE & TECH FREE DIVE MAIN, ALTS .......................................58
FREE & TECH FREE DIVE ALARMS ............................................59
COMPASS MODE...............................................................................61
Compass Icons..........................................................................62
Compass Surface Mode Logic.................................................62
COMPASS MENU...........................................................................63
North OP Main............................................................................63
Reference OP Main....................................................................63
Reference Menu.........................................................................64
Set Reference Heading.........................................................64
Reverse Reference Heading.................................................64
Calibration..................................................................................64
Declination.................................................................................65
COMPASS ALARMS ......................................................................65
NOTICES
LIMITED TWO-YEAR WARRANTY
For details, refer to the Product Warranty Registration Card provided. Register on line at www.oceanicworldwide.com
COPYRIGHT NOTICE
This operating manual is copyrighted, all rights are reserved. It may not, in whole or in part, be copied, photocopied, reproduced, translated, or reduced to any electronic
medium or machine readable form without prior consent in writing from Oceanic/2002 Design.
OCi Operating Manual, Doc. No. 12-5335
© 2002 Design, 2013
San Leandro, CA USA 94577
TRADEMARK, TRADE NAME, AND SERVICE MARK NOTICE
Oceanic, the Oceanic logo type, OCi, the OCi 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, OceanLog, and Dual Algorithm 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:
Dive Computer with Free Dive Mode and/or Wireless Data Transmission (U.S. Patent no. 7,797,124), 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). 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 OCi 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 OCi dive computer model is based upon the latest research and experiments in decompression theory. Still, using the OCi, just as using
the U.S. Navy (or other) No Decompression Tables, is no guarantee of avoiding decompression sickness, i.e. “the bends.” Every diver’s physiology is
different, and can even vary from day to day. No machine can predict how your body will react to a particular dive profile.
REFERENCE ......................................................................................66
PC INTERFACE..............................................................................67
PC Requirements ......................................................................67
CARE AND CLEANING..................................................................68
INSPECTIONS AND SERVICE.......................................................68
BATTERY REPLACEMENT............................................................68
Data Retention...........................................................................68
ALTITUDE SENSING AND ADJUSTMENT....................................69
TECHNICAL DATA .............................................................................70
Z+ ALGORITHM NDL CHART........................................................71
DSAT ALGORITHM NDL CHART ..................................................71
SPECIFICATIONS...........................................................................72
INSPECTION/SERVICE RECORD.....................................................74
OCEANIC WORLDWIDE....................................................................75

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OCi OPERATING MANUAL
© 2002 Design, 2013 Doc. No. 12-5335-r02 (9/12/13)
FEATURES
AND
FUNCTIONS

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OCi OPERATING MANUAL
© 2002 Design, 2013 Doc. No. 12-5335-r02 (9/12/13)
DISPLAY LAYOUT
Time id
Pressure id
Depth id
Temp or
Heading
Low
Battery
FO2 is
Nitrox
Air
Time
Daily AL or
TMT Link
Dot Matrix
ICONS
DISPLAY ABBREVIATIONS
A = AM or Am (time)
ACTIV = Activation
AL = Alarm
ALGO = Algorithm
ATR = Air Time Remaining
AUD = Audible
BATT = Battery
BDSI = Between Dive Surface Interval
C = Centigrade (temperature)
CAL = Calibrate (compass)
CDT = Countdown Timer
CHRONO= Chronograph (stop watch)
COMM = Communications
CONS = Conservative Factor
CONSERV = Conservative Factor
D.M = Day & Month (date)
DA = Descend/Ascend (depth alarm)
DD = Descending Depth (alarm)
DECLIN = Declination (compass)
DECO = Decompression
DESAT = Desaturation (nitrogen)
DFLT = Default
DSAT = Algorithm type
DSD = Dive Start Depth
DTR = Dive Time Remaining
DURA = Duration (backlight time)
E = East (compass)
EDT = Elapsed Dive Time
EL = Elevation (altitude level)
F = Farenheit (temperature)
FO2 = Fractional % of Oxygen
FORM = Format (date, time)
FREE = Free Dive Mode
FRSH = Fresh (water)
FT = Feet (depth)
GAUG = Digital Gauge Dive Mode
GLO = Glow (backlight)
H = Hour (time)
HIST = History
HR = Hour (time)
ID = Identification (module)
INTVL = Interval (time)
IMP = Imperial (units)
M = Meters (depth)
M = Minutes (time)
M.D = Month & Day (date)
MAX = Maximum
MET = Metric (units)
MIN = Minutes (time)
N = North (compass)
NDC = No Deco Time Remaining
NDL = No Deco Limit (time)
NE = Northeast (compass)
NI = Nitrogen
NO-D = No Decompression
NORM = Normal Dive Mode
NW = Northwest (compass)
Nx = Nitrox (gas)
O2 = Oxygen
OP = Operating (mode)
OCi 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 OCi up, the correct Date and
USA Pacific Time will be displayed and it will be ready to operate with full functions.
To wake the OCi up from Deep Sleep mode, simultaneously depress the upper/right (S) and lower/left (A) buttons for 3 seconds until the display comes full
ON displaying the Watch Main Time screen, then release them.
NOTE: Once the OCi is brought out of the Deep Sleep mode, it can only be placed back into it by the factory.
INITIAL ACTIVATION
OTR = O2 Time Remaining
P = PM or Pm (time)
PC = Personal Computer
PO2 = Partial Pressure of O2 (ATA)
PSI = Pounds per Square Inch (pressure)
RDI = Repeating Depth Interval
REF = Reference (compass mode)
REPET = Repeating (interval alarm)
REV = Revision (firmware)
RTI = Repeating Time Interval
S = Seconds (time)
S = South (compass)
SAT = Saturation
SE = Southeast (compass)
SEC = Seconds (time)
SEL = Select
SN = Serial Number
SPG = Submersible Pressure Gauge
SRT = Surface Recovery Time
SURF = Surface (mode, time)
SW = Southwest (compass)
TAT = Total Ascent Time (deco)
TECH = Technical Free Dive Mode
TLBG = Tissue Loading Bar Graph
TMR = Timer
TMT = Transmitter (tank pressure)
UTIL = Utilities (set mode)
VARI = Variable Ascent Rate Indicator
VIOL = Violation
W = West (compass)
Z+ = Algorithm type

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OCi OPERATING MANUAL
© 2002 Design, 2013 Doc. No. 12-5335-r02 (9/12/13)
OVERVIEW
Watch, Pressure Integrated Dive Computer featuring >>
• 4 Control Buttons.
• 6 Operating Modes.
• Watch Default Time (Main or ALT).
• Watch Dual Time (Main or ALT).
• Audible Alarm with flashing LED.
• Digital Compass.
• Altitude Compensation.
• 15+ Menus.
• 60+ Set Selections.
• Increase/Decrease Set Values.
• up to 4 Nitrox Gas Mixes.
• up to 4 Pressure Transmitters.
• 30+ Warnings/Alarms.
• User Replaceable Battery.
INTERACTIVE CONTROL CONSOLE
The Interactive Control Console utilizes 4 control buttons that allow you to maneuver through the OCi's unique system of menus.
The buttons will be referred to as M, S, L, and A.
• Upper/Left - Mode (M) button.
• Upper/Right - Select (S) button.
• Lower/Right - Light (L) button.
• Lower/Left - Advance (A) button.
MENU SYSTEM
The Dot Matrix located in the middle of the LCD viewing area is used to display alpha numeric messages and measured values
as well as Menu type systems for selection of settings and various auxiliary functions. It also serves as the Digital Compass which
can be accessed during operation in any mode.
There are 15 Menus that include the -
• Watch Main Menu. • Set Time Menu.
• NORM Main Menu. • Set Gas Menu.
• GAUG Main Menu. • Set Alarms Menu.
• FREE Main Menu. • Set Utilities Menu.
• TECH FREE Main Menu. • Set TMT Menu.
• Compass Main Menu. • Set Compass Declination Menu.
• Log/History Menu. • Compass Reference Menu.
• Gas/TMT Switch Menu.
Each Menu has a Start (First) selection and a Stop (Last) selection. Upon entering a Menu, movement through it begins at the
Start (First) selection, then continues in a rolling manner down the screen showing selections in groups of 3 items.
• The sample at the right shows how a menu would look if all of the selections could be displayed on one screen.
Menu button action >>
M (< 2 sec) - to access Menu.
A (< 2 sec) - to step down the screen (forward) through selections.
M (< 2 sec) - to step up the screen (backward) through selections.
S (< 2 sec) - to access selection indicated by Arrow icon ( > ).
Right Arrow icon ( > ) at the left indicates the selection.
Down Arrow icon ( v ) at the right indicates that additional selections are available below (after) those shown.
Up Arrow icon ( ^ ) at the right indicates that additional selections are available above (before) those shown.
• Dual Algorithm.
• NDL Conservative Factor.
• No Deco Deep Stop.
• No Deco Safety Stop.
• Gas Switching.
• Transmitter Switching.
• Gauge Dive Run Timer.
• Depths to 330 FT/100 M.
• Tech Free Depths to 495 FT/150 M.
• Free & Tech Free Dive Run Timers.
• Free & Tech Free Countdown Timers.
• Variable Ascent Rate.
• PC Settings Upload/Data Download.
• User Upgradeable Firmware.
FREE
MAIN MENU
SEL
>SEL TIMER
CDT SETUP
LOG/HISTORY
SET ALARMS
SET UTILITIES
OP MODE
OCi ID
Sample Menu
(all selections shown)
Selection can
be accessed.
There is a selection above.
There is a selection below.
M
A
S
L
M
A
S
L
OCi

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OCi OPERATING MANUAL
© 2002 Design, 2013 Doc. No. 12-5335-r02 (9/12/13)
WATCH MODE STRUCTURE
WATCH
MAIN
MS
AL
2 s
< 2 s 2 s
< 2 s
< 2 s
Dive Op
Mode
Compass
Op Main
Main
Menu
ALTs Light
Ack
Daily AL
Select
CDT Setup
Chrono
Daily AL
> Time Menu
2 s
NORM SURFACE MODE STRUCTURE
SURF
MAIN
MS
AL
2 s
2 s
< 2 s
Watch
Mode
Compass
Op Main
Main
Menu
ALTs Light
Select
> Fly/Desat
Plan
Log
Set G
Set A
Set U
OP Mode
History
OCi ID
Batt/TMT
< 2 s
2 s
GAUG SURFACE MODE STRUCTURE
SURF
MAIN
MS
AL
2 s
2 s
< 2 s
Watch
Mode
Compass
Op Main
Main
Menu
ALTs Light
Select
> Fly
Log
Set A
Set U
OP Mode
History
OCi ID
Batt/TMT
< 2 s
2 s
COMPASS MODE STRUCTURE
COMP OP
MAIN
MS
AL
2 s
< 2 s
Watch or
DC Main
Main
Menu
Ref Menu
> Set Heading
Reverse
Light
Select
North
Reference
Calibrate
> Set Declin
(if REF)
SURFACE
< 2 s
2 s
NORM & GAUG SET MENU STRUCTURE
NORM, GAUG
Main Menu
Set G Menu**
> Gas 1
Gas 2
Gas 3
Gas 4
FO2 Default
Set A Menu
> Aud AL
Depth AL
EDT AL
TLBG AL**
DTR AL**
Turn AL
End AL
Set U Menu
Water Type
Wet Activ
Units
Deep Stop**
Safety Stop**
Algorithm**
Conserv**
Glo Dura
Sampling
> TMT Menu
S
< 2 s
S
< 2 s S
< 2 s
** = NORM only
Set Time Menu
> Date Format
Hour Format
Time
Date
ALT Time
Default Time
Show Dual
FREE & TECH FREE SURF MODE STRUCTURE
SURF
MAIN
MS
AL
2 s
2 s
< 2 s
Watch
Main
Compass
Op Main
Main
Menu
ALTs Light
Select
> SEL Timer
CDT Setup
Log/History
Set A
Set U
OP Mode
OCi ID
< 2 s
2 s
- - - - - - - - - - - -
< 2 s - On/Off.
2 s - reset timer.
On - during Aud.
Off - by timer.
Set TMT Menu
> TMT 1
TMT 2
TMT 3
TMT 4
Set Declin Menu
> Declin Off
Declin East
Declin West
- - - - - - - - - - - -
< 2 s - On/Off.
2 s - reset timer.
On - during Aud.
Off - by timer.
- - - - - - - - - - - -
< 2 s - On/Off.
2 s - reset timer.
On - during Aud.
Off - by timer.
- - - - - - - - - - - -
< 2 s - On/Off.
2 s - reset timer.
On - during Aud.
Off - by timer.
- - - - - - - - - - - -
< 2 s - On/Off.
2 s - reset timer.
On - during Aud.
Off - by timer.

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OCi OPERATING MANUAL
© 2002 Design, 2013 Doc. No. 12-5335-r02 (9/12/13)
PC (PERSONAL COMPUTER) INTERFACE
Interface with a PC (including Apple), to allow uploading settings and downloading data, is accomplished by connecting the OCi to a PC USB port using
the special Oceanic USB interface cable.
The software program together with the USB driver required is on the Oceanic Product CD, or it can be downloaded from the Oceanic web site. The
program's Help serves as the user manual which can be printed for personal use.
The settings upload portion of the computer interface program can be used to set/change the Watch, Scuba, and Free mode selections using the same
interface system.
Information available for retrieval (download) from the OCi to the download portion of the program includes items such as dive number, surface interval
time, start/end depths, max depth, elapsed dive time, start date/time, lowest temperature, sampling rate, dive profile (with Earmarks), and set points.
The computer interface program also allows update of select versions of the OCi's firmware (operating system software).
•
Refer to page 67 for more details relating to the computer interface system.
AUDIBLE ALARM
While operating in NORM or GAUG Mode the Audible will emit 1 beep per second for 10 seconds when alarms strike, unless it is set Off. During that
time, the Audible can be silenced by pressing the S button momentarily (less than 2 seconds).
An LED Warning Light, on the side of the housing, is synchronized with the Audible and flashes as the Audible sounds. It will turn off when the Alarm is
silenced. The Audible and LED will not be active if the Audible is Set OFF (a Set Alarms setting).
FREE Dive Modes have their own Alarms which emit multiple beeps multiple times which cannot be acknowledged or set Off.
Events that emit (10) beeps >> each sound for .500 sec with .500 sec silence between beeps:
• Watch Daily Alarm.
• Watch CDT Alarm.
• NORM, GAUG - ATR Warning & Alarm.
• NORM, GAUG - Turn Pressure Alarm (TMT 1).
• NORM, GAUG - End Pressure Alarm (TMT in use).
• NORM, GAUG - Loss of Link (Dive Mode).
• NORM, GAUG - Ascent Rate too fast.
• NORM, GAUG - Depth Alarm.
• NORM, GAUG - EDT Alarm.
• NORM - DTR Alarm.
• NORM - TLBG Alarm.
• NORM - entry into Deco.
• NORM - Conditional Violation.
• NORM - Delayed Violations 1, 2.
• NORM, GAUG - Delayed Violation 3.
• NORM, GAUG - entry into Violation Gauge Mode.
• NORM - PO2 Warning and Alarm.
• NORM - O2 Warning and Alarm.
• NORM - Gas Switch Alarm.
Events that emit (3) beeps >> each sound for .500 sec with .500 sec silence between beeps:
• NORM, GAUG - Ascent Rate warning.
• FREE - Delayed Violation 3.
Events that emit (3) sets of (3) beeps >> each sound for .500 sec with .250 sec silence between beeps and .500 sec silence between sets:
• FREE, TECH FREE - SRT Alarm.
• FREE, TECH FREE - RDI Alarm. RDI does not alarm at the DD or DA alarm depths.
• FREE, TECH FREE - CDT Alarm.
• FREE - TLBG Alarm.
• FREE - Violation, entry into Deco.
Events that emit (3) sets of (3) beeps >> each sound for .125 sec with .125 sec silence between beeps and .250 sec silence between sets:
• FREE - DD1 to DD3 Alarms.
Events that emit (2) beeps >> each sound for 1 sec with .500 sec silence between beeps:
• FREE, TECH FREE - RTI Alarm.
Events that emit (1, 2 or 3)* sets of (1 to 10)* beeps >> each sound for .125 sec with .125 sec silence between beeps and .250 sec silence between sets:
• TECH FREE - DA1 to DA6 Alarms.
* Each DA is user adjustable.

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© 2002 Design, 2013 Doc. No. 12-5335-r02 (9/12/13)
Fig. 1A - LOW BATT
WARNING
(Watch Main Time)
a
Fig. 1B - LOW BATTALARM
(NORM Surface Main)
BACKLIGHT
To turn the Backlight On, press and release the L button (< 2 seconds). The Backlight will remain On for the duration time set (a
Set Utilities selection) unless you turn it Off during that time by pressing S again.
• The Backlight will come On (even if set OFF) when alarms strike and remain On until turned Off by pressing S, or it turns Off
automatically after 10 seconds .
• Pressing and releasing the L button (< 2 seconds), while the Backlight is On, will turn it Off.
• Depressing the L button for 2 seconds, while the Backlight is On, will reset the duration timer and extend the On time to the
full duration time set.
• If the L button is depressed for more than 60 seconds, the Backlight will be disabled and not turn On until the button is
released then pressed/released again.
• The Backlight will be disabled when there is a Low Battery alarm condition, and be re enabled once the battery is replaced.
• Extensive use of the Backlight reduces Battery use life.
• Turning the Backlight Off when it is not being used will help extend Battery use life.
• The Backlight does not operate when the unit is connected to a PC or Mac.
Auto Glo (TECH FREE mode only):
When Auto Glo (a TECH FREE mode Set Utilities selection) is set On, Backlight operation on the surface in TECH FREE mode is
controlled as it normally would be by the L button and duration time set.
However, upon entry into TECH FREE dive mode, the Backlight activates (turns On) automatically and remains On throughout
the full dive until entry into Surface mode when the Backlight operation reverts to normal.
POWER SUPPLY
• Battery >> (1) 3 vdc, CR2450, Lithium battery.
• Shelf life >> up to 7 years (when shipped from factory in Deep Sleep mode).
• Use life >> 1 year or 300 dive hours if (2) 1 hour dives per dive day.
• Replacement >> user replaceable (annual recommended).
Battery icon:
• Warning >> icon on solid when < 2.75 volts, battery change recommended.
• Alarm >> icon on flashing with message when < 2.50 volts, change the battery.
Low Battery when on the surface:
<= 2.75 volts (warning level)
• Backlight is completely disabled*.
• Battery icon (shell with inner bar) appears solid (Fig. 1Aa).
• If a dive is started, the icon is not displayed on the dive mode screens.
• Watch and DC functions*, including Compass Mode, continue to be available.
*TECH FREE dives cannot be started if Auto Glo is set On, due to the Backlight being disabled.
<=2.50 volts (Too Low - alarm level)
• All DC operations cease and the unit operates only as a Watch with Compass (view only).
• Low Battery icon (shell only with no inner bar) flashes for 5 seconds and operation reverts to Watch Time with Compass
allowed (view only) until the Battery is changed or voltage cannot sustain operation, then the graphic CHANGE BATTERY
flashes until the Battery is changed or voltage drops to the level at which operation cannot be maintained.
Low Battery during a dive:
<= 2.75 volts (warning level)
• Backlight is completely disabled**.
• Full DC functions and Compass continue to be available.
• Battery icon is not displayed on the dive mode screens.
• Battery icon (shell with inner bar) appears solid upon entry into Surface Mode.
<= 2.50 volts (Too Low - alarm level)
• Backlight is completely disabled**.
• Full DC functions continue to be available during the dive.
• Battery icon is not displayed on the dive mode screens.
• Upon entry into Surface Mode, the Battery icon (shell only with no inner bar) and graphic CHANGE BATTERY flash for 5
seconds (Fig. 1B) and operation reverts to Watch Time with Compass (view only) allowed, until the Battery is changed or
voltage cannot sustain operation, then the graphic CHANGE BATTERY flashes until the Battery is changed or voltage drops
to the level at which operation cannot be maintained.
**The Backlight will not be disabled during TECH FREE dives, when Auto Glo is set On.
Transmitter Low Battery Alarm, surface only:
=< 2.75 volts (warning level)
• The graphics TMTx BATT LOW appear solid on the Battery Status screen (refer to page 27).
• Watch and DC functions, including Compass Mode, will not be affected.
=< 2.50 volts (Too Low - alarm level)
• The graphics TMTx BATT LOW flash on the Status screen.
• The graphics TMTx BATT LOW also alternate with the NORM (or GAUG) graphics on the matrix portion of the NORM (or
GAUG) Surface Main screen (Fig. 2).
• TMT operation will continue until tank pressure decreases to 50 PSI (3 BAR), then it will disconnect (loose signal).
Fig. 2 - TMT LOW BATT
ALARM
(Surface Main)

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WATCH
MODE

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WATCH DEFAULT TIME
Default Time is the Time that is displayed on the Watch until changed. It is also the Time viewed during operation in DC (Dive
Computer) Modes.
Main Time is the current Time at your home location and is normally selected as the Watch Default Time.
Alternate Time will be the current time at a remote travel location. Upon arrival at the location, Alternate Time can be inter-
changed with Main Time to make it the Watch Default Time. When it is not selected to be the Default Time, it can be viewed on
the Watch ALT 1 screen, or it can be displayed on the Watch screen with Main Time and will be labeled as Dual Time
Once Alternate Time is set, by hour differential, it will automatically change when Time of Day is set/changed. When Alternate
Time is selected to be the Watch Default Time (while at a travel location), it will change directly when Time of Day is changed
and Main (home) Time will then change by a differential opposite the one set for Alternate Time.
WATCH DEFAULT TIME, information includes (Fig. 3A/B/C):
> Dual Time (hr:min) with icon, if Show Dual is set for YES.
> Time of Day (hr:min_sec), Main (home) or Alternate (away), with A or P if 12 hour format, & graphic ALT if Alternate.
> Day of Week graphic MON, TUE, WED, THU, FRI, SAT, or SUN.
> Month.Day (or Day.Month).
> TLBG, if any after NORM or FREE dives.
> Alarm (speaker) icon, if the Daily Alarm is set On.
> Battery icon, if a Low Battery condition.
• M (< 2 sec) - to access the Watch Main Menu.
• M (2 sec) - to access the DC (Dive Computer) Mode last selected.
• A (< 2 sec) - to access the Watch ALT 1 screen. Bypassed to ALT 2 if Show Dual is set for YES.
• S (< 2 sec) - to silence the Daily Alarm.
• S (2 sec) - to access Compass Mode.
• L (< 2 sec) - to toggle the Backlight On/Off.
Will be On for the duration time set.
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.
WATCH ALT 1, information includes (Fig. 4A):
> Time of Day (hr:min_sec), Alternate (away) or Main (home), with A or P if 12 hour format, & graphic ALT if Alternate.
> Day of Week graphic MON, TUE, WED, THU, FRI, SAT, or SUN.
> Month.Day (or Day.Month).
> TLBG, if any after NORM or FREE dives.
> Alarm (speaker) icon, if the Daily Alarm is set On.
> Battery icon, if a Low Battery condition.
• A (< 2 sec) - to access ALT 2.
• Reverts to the Default Time screen after 10 seconds if A is not pressed.
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.
WATCH ALT 2, information includes (Fig. 4B):
> Graphic CDT (Countdown Timer) with OFF or Countdown Time (hr:min), time previously set or that remaining.
> Altitude graphic EL2 (to EL 7), blank if Sea level.
> Temperature with °icon and graphic F (or C).
If the CDT is On and running with time remaining -
• S (< 2 sec) - to stop/start the Timer.
• A (2 sec) - to reset the Timer to the hr:min value set.
• A (< 2 sec) - to revert to the Watch Default Time screen with the CDT running in the background.
If the CDT is Off, or it was running and has counted down to 0:00, operation reverts to the Watch Default Time screen after
10 seconds or by pressing A (< 2 sec).
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.
WATCH MAIN MENU, information includes (Fig. 5A/B):
> CDT Setup >> To select Off, On, or Set (hr:min).
> Chrono >> To Start, Stop, Recall Laps, and Reset.
> Daily Alarm >> To select Off, On, or Set (hr:min).
> Time Menu >> To select/set Date Format, Hour Format, Time, Date, Alternate Time, Default Time, Show Dual.
• M or S (2 sec) - to revert to the Watch Default Time screen.
• If no button is pressed during a period of 2 minutes, operation will revert to the Watch Default Time screen.
• A (< 2 sec) - to step forward (advance down) through the selections indicated by the pointer icon ( > ) along the left side of
the matrix.
Once the pointer icon ( > ) reaches the lower selection on the matrix, it will remain in that position pointing to the next selec-
tion that appears when A is pressed. A down arrow icon located on the right side of the matrix indicates that additional
selections are available below those displayed.
Fig. 3C - DEFAULT TIME
(Alternate selected, no Dual)
Fig. 4A - WATCHALT 1
Fig. 4B - WATCHALT 2
Fig. 3A - DEFAULTTIME
(Main selected, no Dual)
Fig. 5A - MAIN MENU
(first 3 items)
Fig. 5B - MAIN MENU
(last 3 items)
Fig. 3B - DEFAULT TIME
(Main selected, with Dual)

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• M (< 2 sec) will step back through the selections.
Once the pointer icon ( > ) reaches the upper selection on the matrix, it will remain in that position pointing to the next
selection that appears when M is pressed. An up arrow icon located on the right side of the matrix indicates that additional
selections are available above those displayed.
• S (< 2 sec) when the pointer ( > ) icon is next a selection will access (go to) that item.
CDT (Countdown Timer) SETUP, information includes (Fig. 6A/B):
> Graphics CDT SETUP solid with OFF (or ON) flashing and SET solid.
> Remaining Countdown Time (hr:min) if ON and a countdown is in progress, or 0:00 if ON and no time is remaining, or
0:00 or the time previously set if OFF.
• A (< 2 sec) - to step forward through the selections OFF, ON, and SET.
• S (2 sec) - to revert to the Watch Main Menu.
If OFF or ON is flashing, S (< 2 sec) will save the selection and revert to the Watch Main Menu.
ON does not start the countdown, start/stop is controlled while viewing the Watch ALT 2 screen.
If SET is flashing, S (< 2 sec) will access Set CDT.
Once the CDT has been set and turned ON (ready to start, but not started), it will be displayed on the Watch ALT 2 screen
where it can be started, stopped, or reset until set OFF. When the countdown reaches 0:00, the Audible will sound (10 sec)
during which 0:00 and CDT will be displayed on the Watch Default Time screen while the audible sounds.
Upon entering any Dive Computer mode, Watch CDT operation will be terminated and the countdown time will revert to the
hr:min value previously set.
Set CDT, information includes (Fig. 6C):
> Graphics CDT SETUP, solid.
> Graphics OFF, ON, and SET solid.
> Time (hr:min), Hour digits flashing.
• A (hold) - to scroll upward through the Hour set points at 8/second from 0: to 23: in 1 hour (1:) increments.
• A (< 2 sec) - to step up through the set points one at a time.
• M (< 2 sec) - to step back through the set points one at a time.
• S (< 2 sec) - to save the Hour setting and flash the Minute digits.
• A (hold) - to scroll upward through the Minutes set points at 8/second from :00 to :59 in 1 minute (:01) increments.
• A (< 2 sec) - to step up through the set points one at a time.
• M (< 2 sec) - to step back through the set points one at a time.
• S (< 2 sec) - to save the hour:minute set point, with SET flashing allowing OFF or ON to be selected (see Setup above).
• S (2 sec) - to revert to the Watch Main Menu.
FREE Mode has a separate (min:sec) CDT.
CHRONOGRAPH (Stop Watch/Lap Timer), information includes (Fig. 7A/B):
> Graphic LAP1 (or 2 up to 9) if previously started or blank if not yet started
> Graphic CHRONO.
> Elapsed time if previously started, or 0:00:00.00 (hr:min:sec_ .01 sec) if not yet started, flashing.
• S (upon press) - to display the graphic LAP1 and start the Chrono (run time) which will begin counting up from 0:00:00.00
to 9:59:59.99 hr:min:sec_ .01sec in increments of .01 (1/100th sec). After the first 4.99 seconds, the .01 sec digits will
be displayed as 2 dashes ( . - - ).
• S (upon press) - to save Lap 1’s time and display the graphic LAP2 with the Timer continuing to count up. Total Run Time is
always displayed until the Chrono is stopped.
• S (upon press) - to freeze Lap Times (1 up to 9). After 9, subsequent Laps will be recorded and the earliest Lap discarded.
Freezing of a Lap Time is prevented when S is operated during an Alarm strike.
If the Chrono continues to run and reaches 9:59:59.99, it will stop and record that as a Lap. Subsequent presses of S then
have no effect.
• A (< 2 sec) - to stop the Chrono and recall Lap 1 displaying the graphic LAP1 and the Lap time. Subsequent presses of A
will recall the other Laps.
• A (2 sec) - to stop the Chrono if running, and reset it to 0:00:00.00.
• M (2 sec) - to revert to Watch Main with Chrono running in the background.
Once the Chrono has been set and started, it will remain on display (or continue to run in the background) while on the
surface until reset by the user. Upon descending to 5 FT/1.5 M (i.e., entry into Dive Mode), operation will be terminated
and the counter will reset to 0:00:00.00 (hr:min:sec.xx).
Fig. 7A - CHRONO
(started, running)
Fig. 7B - CHRONO
(started, frozen or recalled)
Fig. 6A - CDT SETUP
(Off, not yet set)
Fig. 6B - CDT SETUP
(On, running)
Fig. 6C - SET CDT
(hour then minutes)

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DAILY ALARM
When set On, the Daily Alarm, that runs in the background, will sound the Audible at the time set every day when that time
equals the Watch Default Time selected. The Audible will not sound while operating in dive computer modes.
Daily Alarm Status, information includes (Fig. 8A):
> Graphics DAILY ALARM solid, with OFF (or ON) flashing.
> Alarm Time (hr:min) last set, with graphic AM (or PM) if 12 Hour Format.
• A (< 2 sec) - to step forward (down) through the selections OFF, ON, and SET.
• M (< 2 sec) - to step back (up) through the selections.
• S (< 2 sec) - to save the selection that is flashing.
>> If OFF is selected, operation reverts to the Menu.
>> If ON is selected, operation reverts to the Menu with the Alarm enabled.
>> If SET is selected, Set Daily Alarm is accessed.
Set Daily Alarm, information includes (Fig. 8B):
> Graphics DAILY ALARM, OFF, ON, and SET solid.
> Alarm Time (hr:min) with Hour digits flashing, with AM (or PM).
• A (hold) - to scroll upward through Hour set points 8/sec from 0: to 23: in increments of 1: (hr).
• A (< 2 sec) - to step upward through Hour set points one at a time.
• M (< 2 sec) - to step back through Hour set points one at a time.
• S (< 2 sec) - to save the Hour set point and flash the Minute digits.
• A (hold) - to scroll upward through Minute set points 8/sec from :00 to :59 in increments of :01 (min).
• A (< 2 sec) - to step upward through Minute set points one at a time.
• M (< 2 sec) - to step back through Minute set points one at a time.
• S (< 2 sec) - to save the setting (hr:min digits solid) and flash the graphic SET allowing ON or OFF to be selected/saved.
SET TIME MENU, information includes (Fig. 9):
> Graphic SEL (Select).
> Graphic selections - DATE FORM, HOUR FORM, TIME, DATE, ALT TIME, DFLT TIME, SHOW DUAL (with 3 per screen).
• A (< 2 sec) - to step down (forward) through the selections.
• M (< 2 sec) - to step up (back) through the selections.
• S (< 2 sec) - to access the menu selection indicated by the pointer icon ( > ).
Set Date Format, information includes (Fig. 10):
Date Format establishes the position that the Month (M) digits are displayed relative to the Day (D) digits, on the left or right.
> Graphic DATE FORM (Format).
> Graphics M.D and D.M with the pointer icon ( > ) next to the one previously saved flashing.
• A or M (< 2 sec) - to toggle between M.D and D.M.
• S (< 2 sec) - to save the settings and revert to the menu.
Set Hour Format, information includes (Fig. 11):
> Graphic HOUR FORM (Format).
> Graphics 12 and 24 with the pointer icon ( > ) next to the one previously saved flashing.
• A (< 2 sec) - to toggle between 12 and 24.
• S (< 2 sec) - to save setting and revert to the menu.
Set Time of Day, information includes (Fig. 12):
> Graphics TIME OF DAY solid, with HOUR flashing and MIN solid.
> Time of Day (hr:min)**, with Hour digits flashing, with graphic AM (or PM) if 12 Hour Format.
**
Upon accessing this screen, the hr:min value shown will match the Watch Default Time selected, so you will be setting the
time of day where you are currently located which can be Main (home) or Alternate (away).
• A (hold) - to scroll upward through Hour set points 8/sec from 12: AM to 11: PM or 0: to 23: if 24 Hour Format, in
increments of 1: (hr).
• A (< 2 sec) - to step upward through Hour set points one at a time.
• M (< 2 sec) - to step back through Hour set points one at a time.
• S (< 2 sec) - to save the Hour set point, move the pointer icon to MIN, and flash the MIN icon and Minute digits.
• A (hold) - to scroll upward through Minute set points 8/sec from :00 to :59 in increments of :01 (min).
• A (< 2 sec) - to step upward through Minute set points one at a time.
• M (< 2 sec) - to step back through Minute set points one at a time.
• S (< 2 sec) - to save the Time setting and revert to the Set Time Menu.
Fig. 10 - SET DATE FORMAT
Fig. 11 - SET HOUR FORMAT
Fig. 12 - SET TIME
Fig. 8B - SET DAILYAL
Fig. 9 - SET TIME MENU
Fig. 8A - DAILY ALARM
STATUS (upon access)

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Set Date, information includes (Fig. 13):
The sequence for setting date is Year, then Month, then Day, regardless of the Date Format set.
> Graphic DATE.
> Graphics YEAR MNTH.DAY (or (DAY.MNTH).
> Date with Year digits flashing.
• A (hold) - to scroll upward through Year set points 8/sec from 2013 to 2056.
• A (< 2 sec) - to step upward through Year set points one at a time.
• M (< 2 sec) - to step back through Year set points one at a time.
• S (< 2 sec) - to save the Year setting and flash the Month digits.
• A (hold) - to scroll upward through Month set points 8/sec from 1 to 12 in increments of 1.
• A (< 2 sec) - to step upward through Month set points one at a time.
• M (< 2 sec) - to step back through Month set points one at a time.
• S (< 2 sec) - to save the Month setting and flash the Day digits.
• A (hold) - to scroll upward through Day set points 8/sec from 1 to 31 (max) in increments of 1.
• A (< 2 sec) - to step upward through Day set points one at a time.
• M (< 2 sec) - to step back through Day set points one at a time.
• S (< 2 sec) - to save the Date setting and revert to the Set Time Menu.
Set ALT (Alternate) Time, information includes (Fig. 14):
This feature sets an Hour based differential ranging from - 23 through 00 to + 23 (hours). Once the differential is selected/
saved, ALT (and Dual) Time values displayed are based on the Watch Default Time of Day set.
> Graphics ALT TIME solid, with ON flashing, and SET solid
> +/- numeric Hour differential with graphic Hour, solid.
• A or M (< 2 sec) - to toggle between ON and SET.
• S (< 2 sec) - to save the selection, and revert to the menu if ON is selected. If SET is selected/saved, the differential digits
will flash allowing them to be changed.
• A (hold) - to scroll upward through the set points 8/sec from - 23 to - 01 to 00 to + 01 to + 23 in increments of 1.
• A (< 2 sec) - to step upward through the set points one at a time.
• M (< 2 sec) - to step back through the set points one at a time.
• S (< 2 sec) - to save the differential setting (digits solid) and flash the graphic SET allowing ON to be selected/saved.
Set Default Time, information includes (Fig. 15):
This selection allows you to choose which time is to be displayed as the primary time of day, and which by diffferential.
> Graphic DFLT TIME.
> Graphics MAIN (home) and ALT (away) with the pointer icon ( > ) next to the one previously saved flashing.
• A or M (< 2 sec) - to toggle between MAIN and ALT.
• S (< 2 sec) - to save the settings and revert to the menu.
Show Dual Time, information includes (Fig. 16):
This selection determines whether the differential time set will be displayed on the main Watch screen with Default Time.
> Graphic SHOW DUAL.
> Graphics YES and NO with the pointer icon ( > ) next to the one previously saved flashing.
• A or M (< 2 sec) - to toggle between YES and NO.
• S (< 2 sec) - to save the settings and revert to the menu.
-----------------------------------------------------------------------------------------------------
Fig. 14 - SETALT TIME
Fig. 15 - SET DEFAULT TIME
Fig. 16 - SHOW DUAL TIME
Fig. 13 - SET DATE
Day of the week is set
automatically based on the
Date set.

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NORM
SURFACE MODES

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NORM SURFACE FUNCTIONS
LLight
S
2 sec
A
< 2 sec
Compass
Surface ALTs
MAIN
MENU
>
FLY/DESAT
PLAN
LOG
SET GAS
SET ALARMS
SET UTILITIES
OP MODE
HISTORY
OCi ID
BATT/TMT
NORM
SURF MAIN
SEL
DIVE MODE
NORM
GAUG
FREE
TECH FREE
>S
< 2 sec
WATCH
Main Time M
2 sec
GAUG
SURF MAIN
M
< 2 sec
A
< 2 sec
M
< 2 sec M or S
2 sec
DIVE COMPUTER OPERATING MODES
NORM Mode >> for Air and Nitrox SCUBA activity with up to 4 Gases and 4 Transmitters.
GAUG Mode >> for SCUBA activity with Depth/Time indication and up to 4 Transmitters.
FREE Mode >> for general breath hold diving activities with Depth/Time indication.
TECH FREE Mode >> for very deep breath hold diving activities with Depth/Time indication.
If no previous dive has been taken within the past 24 hours, NORM is the default upon access from Watch Time. Other operating modes can be accessed
from the Main Menu.
At any time while operating in Surface Modes, operation will enter the Scuba dive mode selected (NORM or GAUG) upon descent to 5 FT (1.5 M) for 5
seconds, or the FREE dive mode selected upon descent to the DSD (Dive Start Depth) set for 5 seconds.
• When Wet Activation is set Off, dive mode will only activate when operating in a Dive Computer mode. It will not activate while in Watch Mode
unless it is a repetitive dive in a series.
• When Wet Activation is set On, the selected dive mode will activate upon descent regardless of what mode it is operating in at the time.
Post Dive:
Operation will revert from Dive Mode to Post Dive Surface Mode upon ascent to 2 FT (0.6 M) for 1 second.
During the Transition Period, which is the first 10 minutes on the surface after a NORM or GAUG dive, or after the BDSI (Between Dive Surface Interval)
time set after a FREE or TECH FREE dive >>
• The Surface Main will be displayed with Surface Interval time and access to Surface ALT screens.
• A descent during the Transition Period is a continuation of that dive.
• A descent after the Transition Period has elapsed is then considered a new dive.
After 10 minutes elapse on the surface following any dive, operation will revert to the Watch Default Time screen (to save battery power). Access is then
gained to the Surface Main by a 2 second press of the M button after which operation will remain in that dive computer operating mode for 2 hours before
again reverting to the Watch Default Time.
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
S 2 sec while viewing
the Menu to revert to
SURF Main.
S
< 2 sec
S
2 sec
(sample selection)

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NORM SURF MAIN, information includes (Fig. 17A/B):
> Surface Interval Time (hr:min) with SURF icon; if no dive yet, this is time since access to NORM.
> Graphic Z+ or DSAT, the Algorithm selected.
> Graphic NORM.
> Graphic GAS-1* and the FO2 set for that gas with FO2 icon.
> Graphic DIVE and number of the dive just completed during that operating period, up to 24 (0 if no dive made yet).
> Nx icon, if any Gas is set for Nitrox.
> Pressure* with PSI (or BAR) and Link icons.
> TLBG with icon, if any after a NORM or FREE dive.
> Battery icon, if voltage is low.
*Gas #1 and Tank #1 Pressure are the defaults before dives & 10 minutes after surfacing.
During the first 10 minutes after surfacing, the Gas and Pressure represent the Gas & Tank in use.
• A (< 2 sec) - to access ALT 1.
• M (< 2 sec) - to access NORM Menu, except during 10 minutes after surfacing from dives .
• M (2 sec) - to access Watch Main.
• S (2 sec) - to access Compass Mode.
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.
NORM SURF ALT 1 (Last), information includes (Fig. 18):
> Graphic LAST DIVE, indicating that data is from the dive previously conducted while in NORM mode.
> Max Depth with FT (or M) and MAX icons, 2 dashes ( - - ) if no previous dive.
> Elapsed Dive Time (hr:min) with graphic EDT, 3 dashes ( - : - - ) if no previous dive.
• A (< 2 sec) - to access ALT 2.
• 10 sec - revert to Main, if A is not pressed.
• L - to activate Backlight.
NORM SURF ALT 2, information includes (Fig. 19):
> Time of Day (hr:min_sec) with A (or P).
> Altitude graphic, if EL2 (to EL7), blank if Sea level.
> Temperature with °icon and graphic F (or C).
• A (< 2 sec) - to access ALT 3 (if set for Nitrox), or revert to Main (if set for Air).
• 10 sec - revert to Main, if A is not pressed.
• L - to operate the Backlight.
NORM SURF ALT 3, information includes (Fig. 20):
> Current % O2 SAT (saturation) with graphic.
> Graphic GAS-1 with FO2 setting and icon.
> Nx icon.
> O2BG with O2 icon, if any after a dive.
• 10 sec or A (< 2 sec) - to revert to Main.
• L - to operate the Backlight.
---------------------------------------------------------------------------------------------------------------------------------------------------------------
NORM MAIN MENU (Fig. 21)
Button operations:
• M (< 2 sec) - to access the Menu, while viewing the Surface Main.
• A (< 2 sec) - to step down (forward) through selections.
• M (< 2 sec) - to step up (backward) through selections.
• S (< 2 sec) - to access a selection indicated by the pointer icon ( > ).
• S (2 sec), while viewing the menu - to revert to Surface Main.
• M (2 sec) any time - to revert to Surface Main.
• 2 min (no button action) - will revert to Surface Main.
Fig. 17B - NORM SURF MAIN
(4 minutes after dive 1)
Fig. 17A - NORM SURF MAIN
(no dive yet)
Fig. 19 - NORM SURF ALT 2
Fig. 18 - NORM SURF ALT 1
(Last dive's data)
Fig. 20 - NORM SURF ALT 3
NORM
MAIN MENU
>FLY/DESAT
PLAN
LOG
SET GAS
SET ALARMS
SET UTILITIES
OP MODE
HISTORY
OCi ID
BATT/TMT
Fig. 21 - NORM MAIN MENU
(sample screen, 1st 3 items)

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FLY/DESAT TIME - NORM & GAUG MODES
Fly Time is a count down timer that begins counting down 10 minutes after surfacing from a dive from 23:50 to 0:00 (hr:min).
Desat Time (Desaturation of Nitrogen), also a countdown timer, provides calculated time for tissue desaturation at sea level taking
into consideration the Conservation Factor setting.
Desat Time also begins counting down 10 minutes after surfacing from a NORM dive, counting down from 23:50 (max) to
0:00 (hr:min).
When the Desat countdown reaches 0:00, which will generally occur prior to the Fly count down reaching 0:00, it will remain
on the display as 0:00 until the Fly count down reaches 0:00.
> Desat is not displayed after a Gauge or Violation dive.
> Desaturation requiring Times greater than 24 hours will display 23: - - .
> In the event that Time to Desaturate still remains at the end of 24 hours, the added time will be zeroed.
> When other screens are accessed, the Fly and Desat countdowns continue in the background.
FLY/DESAT, information includes (Fig. 22):
> Time to Fly (hr:min), 0:00 if no dive yet, dashes ( - : - - ) during first 10 min on surface, with graphic FLY.
> Time to Desat (hr:min), 0:00 if no dive yet, dashes ( - : - - ) during first 10 min on surface, with graphic DESAT.
• S (< 2 sec) - to revert to the Main Menu.
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.
• L (< 2 sec) - to toggle the Backlight On/Off.
Will be On for the duration time set.
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.
PLAN - NORM MODE
No Deco Dive Times (NDLs) in NORM Plan Mode are based on the Algorithm selected (DSAT or Z+) and only on the FO2 set for
Gas 1. FO2 settings for Gas 2, 3, and 4 are not used for planning.
Surface Main >> Main Menu >> Plan Lead-in >> PDPS.
Plan Lead-in, information includes (Fig. 23A/B):
> Graphic PLAN.
> Graphic DSAT (or Z+), algorithm selected.
> Graphic Gas 1, default gas used for planning.
> Graphic AIR, or numeric value (21 to 100%) of FO2 set for Gas 1.
> PO2 Alarm value set for Gas 1 (1.00 to 1.60) if Nitrox, blank if Air.
> Nx icon, if Nitrox.
• S (< 2 sec) - to access the first screen of the PDPS.
• S (2 sec) - to step back to the Main Menu.
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.
PDPS (Pre Dive Planning Sequence)
The PDPS displays Depths and allowable No Deco Dive Times. It will sequence through Depths from 30 to 190 FT (9 to 57 M),
or the Max Depth that will allow theoretical No Deco Dive Time of at least 1 minute based upon the previous dive profiles in a
series of repetitive dives and taking into account descent and ascent rates of 60 FPM (18 MPM).
When the Conservative Factor is set On, No Deco Dive times are reduced to the values of the next 3000 foot (915 meter) higher
Altitude. Refer to tables in back.
PDPS, information includes (Fig. 24A/B):
> Max Depth, allowed for the PO2 alarm value set, with MAX and FT (or M) icons, blank if FO2 is set for Air.
> Plan Depth value with graphic FT (or M).
> Dive Time allowed (hr:min) with graphic NDC (or OTR), no OTR if Air.
> Graphic AIR, or numeric value (21 to 100%) of FO2 set for Gas 1.
> PO2 Alarm value set for Gas 1 (1.00 to 1.60) if Nitrox, blank if Air.
> Nx icon, if Nitrox.
• A (hold) - to scroll upward through Depth screens 8/sec from 30 to 190 FT (9 to 57 M) in increments of 10 FT (3 M).
• A (< 2 sec) - to step upward through screens one at a time.
• M (< 2 sec) - to step back through screens one at a time.
• S (< 2 sec) - to exit the PDPS and revert to the Plan Lead-in screen.
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.
Fig. 22 - FLY/DESAT
(10 min after dive)
Fig. 23A - PLAN LEAD-IN
(Gas 1 set for Air)
Fig. 23B - PLAN LEAD-IN
(Gas 1 set for Nitrox)
Fig. 24A - PDPS
(nitrogen control)
Fig. 24B - PDPS
(oxygen control)

20
OCi OPERATING MANUAL
© 2002 Design, 2013 Doc. No. 12-5335-r02 (9/12/13)
SCUBA LOG - NORM & GAUG MODES
Information from the latest 24 NORM and/or GAUG dives is stored for viewing. After exceeding 24 dives, the most recent dive
is stored while the oldest is deleted.
> Dives are numbered from 1 to 24 starting each time NORM (or GAUG) Dive Mode is activated. After the post dive 24 hour
period has elapsed, the first dive of the next operation period is #1.
> 10 minutes after surfacing from dives, the Log screens for that dive as well as all other dives stored can be viewed.
> In the event that a dive’s elapsed time (EDT) exceeds 9:59 (hr:min), the data at the 9:59 interval is recorded in the Log upon
surfacing of the unit.
Surface Main >> Main Menu >> Log Data 1 >> Log Data 2 >> Log Data 3 >> Log Data 4.
LOG DATA 1 (identifier), information includes (Fig. 25A/B):
> Graphic LOG.
The graphics NO DIVES YET are displayed until the first dive is recorded
> Graphic NO-D (or DECO or GAUG or VIOL).
> Graphic DIVE - with dive number (1 to 24, 0 if no dive recorded yet).
> Time of Day* the dive began (hr:min) with A (or P).
> Day of the week the dive was conducted (MON, etc.).
> Date* the dive was conducted (Month.Day or Day.Month)
*The Times and Dates recorded are based on the Watch Default Time selected. Main (home) Time will be used unless you
have selected ALT Time (away) to be the Watch Default Time prior to the dives recorded.
• A (hold) - to scroll through Data 1 screens 8/sec, from the most recent to oldest recorded.
• A (< 2 sec) - to step through screens one at a time, from the most recent to oldest recorded.
• M (< 2 sec) - to step back through screens one at a time.
• S (< 2 sec) - to access that dive's Log Data 2 screen.
• S (2 sec) - to step back to the Main Menu.
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.
LOG DATA 2, information includes (Fig. 26):
> Pre dive Surface Interval (hr:min) with SURF icon, 0:00 if Dive # 1.
> Max Depth with graphic FT (or M) MAX.
> Elapsed Dive Time (hr:min) with graphic EDT.
> Graphic SEA (or EL2 to EL7), altitude at which the dive was conducted.
> Temperature with ° icon and graphic F (or C), minimum recorded during that dive.
> TLBG with the max segment flashing, others fixed up to end of dive accumulation. All segments flashing if a Violation.
Blank if GAUG.
> VARI, max Ascent Rate sustained for 4 seconds during the dive.
> Nx icon, if any gas was set for Nitrox.
• S (< 2 sec) - to access that dive's Log Data 3 screen, or bypass to Data 4 if no TMT used.
• S (2 sec) - to step back to that dive's Log Data 1 screen.
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.
LOG DATA 3 (TMT 1 only, bypassed if no TMT used), information includes (Fig. 27):
> Graphic TMT1.
> Start Pressure with graphics PSI (or BAR) and START.
> End Pressure with graphics PSI (or BAR) and END.
• S (< 2 sec) - to access that dive's Log Data 3 screen.
• S (2 sec) - to step back to that dive's Log Data 2 screen.
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.
LOG DATA 4 (Nitrox only), information includes (Fig. 28):
> % of O2 Saturation when the dive ended with graphics..
> Graphic GAS 1 (or 2, 3, 4), the gas in use when the dive ended.
> FO2 set for the gas in use when the dive ended.
> Maximum PO2 achieved during the dive with icon.
> Nx icon.
• S (< 2 sec) - to access that dive's Log Data 1 screen.
• S (2 sec) - to step back to that dive's Log Data 3 screen.
• M (2 sec), or 2 min of no button action, - to revert to the Surface Main.
• L (< 2 sec) - to toggle the Backlight On/Off. Will be On for the duration time set.
• L (2 sec), while the Backlight is On, - to reset the timer to keep it On for the full duration time set.
Fig. 26 - LOG DATA 2
Fig. 27 - LOG DATA 3
Fig. 25A - LOG DATA 1
Fig. 25B - LOG DATA 1
Fig. 28 - LOG DATA 4