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© 2002 Design, 2011 Doc. No. 12-5272-r01 (9/28/11)
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© 2002 Design, 2011 Doc. No. 12-5272-r01 (9/28/11)
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

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OCS OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5272-r01 (9/28/11)
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

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.
OCS Operating Manual, Doc. No. 12-5272
© 2002 Design, 2011
San Leandro, CA USA 94577
TRADEMARK, TRADE NAME, AND SERVICE MARK NOTICE
Oceanic, the Oceanic logo type, OCS, the OCS logo, Diver Replaceable Batteries, Graphic Diver Interface, Tissue Loading Bar Graph (TLBG), Pre Dive Planning Sequence (PDPS), Set Point, Control Console,
and OceanLog are all registered and unregistered trademarks, trade names, and service marks of Oceanic. All rights are reserved.
PATENT NOTICE
U.S. Patents have been issued, or applied for, to protect the following design features:
Data Sensing and Processing Device (U.S. Patent no. 4,882,678). 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 OCS 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 OCS dive computer model is based upon the latest research and experiments in decompression theory. Still, using the OCS, 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.
4
OCS OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5272-r01 (9/28/11)
Welcome
to
OCEANIC
and
THANK YOU
for choosing the
OCS
5
OCS OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5272-r01 (9/28/11)
FEATURES
AND
FUNCTIONS
6
OCS OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5272-r01 (9/28/11)
DISPLAY LAYOUT
Descend,
Ascend,
or Stop
TLBG or
O2BG
BG id
VARI
Log
Mode
Depth id
Temp or
Heading
Low
Battery
FO2
Nitrox
Time
Daily AL
Dot Matrix
ICONS
DISPLAY ABBREVIATIONS
ACTIV = Activation
AL = Alarm
ALT = Alternate (watch time)
AUD = Audible
AVAIL = Available
BATT = Battery
CAL = Calibrate (compass)
CDT (CD) = Countdown Timer
CHRONO = Chronograph (stop watch)
CONSERV = Conservative Factor
DD = Descending Depth (alarm)
DECO = Decompression
DESAT = Desaturation (nitrogen)
DFLT = Default
DSAT = Algorithm type
DTR = Dive Time Remaining
DURA = Duration (backlight)
E = East (compass)
EDT = Elapsed Dive Time
EL = Elevation (altitude)
FO2 = Fraction of Oxygen (%)
FORM = Format (date, time)
FREE = Free Dive Mode
FT = Feet (depth)
GAUG = Digital Gauge Dive Mode
GLO = Glow (backlight)
HIST = History
LO = Low (battery)
M = Meters (depth)
MIN = Minutes (time)
N = North (compass)
NDC = No Deco DTR
NDL = No Deco Limit
NE = Northeast (compass)
NO = Number
NO-D = No Decompression
NORM = Normal Dive Mode
NW = Northwest (compass)
O2 = Oxygen
OTR = O2 DTR
PO2 = Partial Pressure of O2 (ATA)
REF = Reference (compass)
S = South (compass)
SAFE = Safety (stop)
SE = Southeast (compass)
SEC = Seconds (time)
SET A = Set Alarms
SET F = Set FO2 items
SET U = Set Utilities
SN = Serial Number
SURF = Surface
SW = Southwest (compass)
SWCH = Switch (gas)
TAT = Total Ascent Time (deco)
TLBG = Tissue Loading Bar Graph
TMR = Timer
VIOL = Violation
W = West (compass)
Z+ = Algorithm type
OCS 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 OCS up, the correct Date and
USA Pacific Time will be displayed and it will be ready to operate with full functions.
To wake the OCS 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 OCS is brought out of the Deep Sleep mode, it can only be placed back into it by the factory.
INITIAL ACTIVATION
7
OCS OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5272-r01 (9/28/11)
OVERVIEW
The OCS is a fully loaded Watch Dive Computer featuring >>
• 4 Control Buttons.
• 9 Menus.
• 30+ Set Selections.
• Increase/Decrease Set Values.
• 5 Operating Modes.
• 3 Nitrox Gas Mixes.
• 30+ Warnings/Alarms.
• Dual Watch Time.
• Dual Algorithm.
• Gas Switching.
INTERACTIVE CONTROL CONSOLE
The Interactive Control Console utilizes 4 control buttons that allow you to maneuver through the OCS'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 10 Menus that include the -
• Watch Menu.
• Set Time Menu.
• NORM Menu.
• GAUG Menu.
• FREE Menu.
• Compass Menu.
• Set F Menu.
• Set A Menu.
• Set U Menu.
Each Menu has a Start (First) selection and a Stop (Last) selection. Upon entering a Menu, movement through it starts at the Start
(First) selection, then continues in a rolling manner down the screen showing selections in groups of 3.
• The sample at the right shows how a menu would look if all of the selections would 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.
M
A
S
L
• No Deco Deep Stop.
• No Deco Safety Stop.
• Gauge Depths to 660 FT/200 M.
• Gauge Dive Run Timer.
• Digital Compass.
• Altitude Compensation.
• NDL Conservative Factor.
• Variable Ascent Rate.
• PC Settings Upload/Data Download.
• Audible Alarm with flashing LED.
• User Replaceable Battery.
• User Upgradeable Firmware.
OCS









Sample Menu
(all selections shown)
Selection can
be accessed.
There is a selection above.
There is a selection below.
M
A
S
L
8
OCS OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5272-r01 (9/28/11)
WATCH MODE STRUCTURE


M
S
A
L
2 sec
< 2 sec
2 sec
< 2 sec
closure
< 2 sec
Dive Op
Mode
Compass
Op Main
Watch
Menu
Watch
ALT 1
Watch
ALT 2
Light
Ack
Daily AL
A
< 2 sec
Select
> CDT
Chrono
Daily AL
Set Time
2 sec
NORM SURFACE MODE STRUCTURE


M
S
A
L
2 sec
2 sec
< 2 sec
closure
Watch
Mode
Compass
Op Main
NORM
Menu
SURF
ALT 1
SURF
ALT 2
Light
A
< 2 sec
Select
> Fly/Desat
Plan
Log
Set F
Set A
Set U
Dive Mode
History
SN
SURF
ALT 3
A
< 2 sec
< 2 sec
2 sec
GAUG SURFACE MODE STRUCTURE


M
S
A
L
2 sec
2 sec
< 2 sec
closure
Watch
Mode
Compass
Op Main
GAUG
Menu
SURF
ALT 1
SURF
ALT 2
Light
A
< 2 sec
Select
> Fly
Log
Set A
Set U
Dive Mode
History
SN
< 2 sec
2 sec
COMPASS MODE STRUCTURE


M
S
A
L
2 sec
< 2 sec
closure
Watch or
DC Main
COMP
Menu
REF Menu
> Set
Reverse
Light
Select
> Calibration
North
Reference
Declination
(if REF)
SURFACE
< 2 sec
2 sec
WATCH/NORM/GAUG SET MODE STRUCTURE
NORM or GAUG
Menu
Set F Menu**
> GAS1
GAS2
GAS3
FO2 Default
Set A Menu
> Aud AL
Depth AL
EDT AL
TLBG AL**
DTR AL**
Set U Menu
> Wet Activ
Units
Deep Stop**
Safety Stop**
Algorithm**
Conserv**
Glo Dura
Sampling
S
< 2 sec
S
< 2 sec
S
< 2 sec
** = NORM only
WATCH
Menu
Set Time Menu
> Date Format
Hour Format
Default Time
ALT Time
Time
Date
S
< 2 sec
FREE SURF MODE STRUCTURE


M
S
A
L
2 sec
2 sec
< 2 sec
closure
Watch
Mode
Compass
Op Main
FREE
Menu
SURF
ALT 1
SURF
ALT 2
Light
A
< 2 sec
Select
> CDT
Set EDT AL
Set DD1 AL
Set DD2 AL
Set DD3 AL
Dive Mode
< 2 sec
2 sec
9
OCS OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5272-r01 (9/28/11)
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 acknowledged and silenced by pressing the S button (less than 2 seconds).
A LED Warning Light, on the lower end 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 group A setting).
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.
Situations that will activate the NORM/GAUG 10 second Alarm include -
** Items activate only in NORM mode.
• Descent deeper than the Depth Alarm Set Point selected.
• Dive Time Remaining at the Set Point selected**.
• Elapsed Dive Time at the Set Point selected.
• PO2 at the Set Point selected**.
• High O2 of 300 OTU (100%)**.
• TLBG at the Set Point selected**.
• Ascent Rate exceeds 60 FPM (18 MPM) when deeper than 60 FT (18 M), or 30 FPM (9 MPM) at 60 FT (18 M) and shallower.
• Entry into Decompression Mode (Deco)**.
• Conditional Violation (above a required Deco Stop Depth for less than 5 minutes)**.
• Delayed Violation (above a required Deco Stop Depth for more than 5 minutes)**.
• Delayed Violation (a Deco Stop Depth greater than 60 FT/18 M is required)**.
• Delayed Violation (Max Operating Depth of 330 FT/100 M is exceeded).
• A Gas Switch would expose the diver to PO2 => 1.60 ATA**.
• Watch Daily Alarm reaches time set (disabled during Dive Modes).
• Watch Mode Countdown Timer reaches 0:00.
A single short beep (which cannot be disabled) sounds when -
• After 5 minutes on the surface after the Violation dive.
3 short beeps (which cannot be disabled) sound when -
• Ascent Rate is 51 to 60 FPM (15.1 to 18 MPM) when deeper than 60 FT (18 M), or 26 to 30 FPM (7.5 to 9 MPM) at 60 FT (18 M) and shallower.
• FREE 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 (Violation) - 3 beeps 3 times.
• Free Dive Mode Countdown Timer reaches 0:00 - 3 beeps 3 times.
During the following NORM Dive situations, the 10 second tone will be followed by a 5 second beep that will not turn off when acknowledged -
• Ascent above a Deco Stop for more than 5 minutes.
• Deco requires a Stop Depth of 70 FT/21 M or deeper.
• On the Surface for 5 minutes after a Conditional Violation.
PC INTERFACE
Interface with a PC, to allow uploading settings and downloading data, is accomplished by connecting the OCS to a PC USB Port using the special OCS
USB Interface Cable.
The software program together with the USB Driver required is on the Oceanlog CD, and can be downloaded from the OceanicWorldwide web site. The
program's HELP** serves as the user manual which can be printed for personal use.
** Prior to attempting to Download data from your OCS or Upload Settings to it, review the HELP section of the Oceanlog program. Recommended is to
print those sections of HELP that you consider appropriate for your Interface activities.
The Settings Upload portion of the Oceanlog program can be used to set/change the Main Time, Date, Set A group (Alarms), and Set U group (Utilities)
using the same Interface System. FO2 and FREE Mode related items must be set using the control buttons.
Information available for retrieval (download) from the OCS to the PC Download portion of the program includes dive data such as number, surface inter-
val time, maximum depth, elapsed dive time, no deco status, start date/time, lowest temperature under water, sampling rate, dive profile, and Set Points.
The Oceanlog program also allows upgrade of select versions of the OCS's firmware (operating system software) after which the OCS resets all operating
data. Since the upgrades require reset of the OCS, they are blocked during 24 hours after dives.
• Refer to page 54 for more details relating to Oceanlog and PC Interface.
10
OCS OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5272-r01 (9/28/11)
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 < 2.75 volts, battery change recommended.
• Alarm >> icon on flashing < 2.50 volts, change the battery.
LOW BATTERY WHILE ON THE SURFACE
<= 2.75 volts (warning level)
• Backlight is completely disabled.
• Battery icon (shell with inner bar) appears solid (Fig. 1a).
• 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.
<=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 (Fig. 2) 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. 3) and operation reverts to Watch Time (Fig. 4), 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.
Fig. 1 - LOW BATT WARNING
Fig. 2 - LOW BATT ALARM
a
Fig. 3 - LOW BATT ALARM
(after surfacing)
Fig. 4 - WATCH MODE
(Low Batt Alarm)
11
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WATCH MODE
12
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© 2002 Design, 2011 Doc. No. 12-5272-r01 (9/28/11)
WATCH MAIN (DEFAULT) TIME
Main (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, set by Hour Differential, 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 Default Time while visiting the travel location.
Setting Time of Day and Alternate Time, and selection of the Default Time are functions in the Watch Set Time Menu.
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.
M (2 sec), or no button action during 2 minutes, while in any Watch sub routine, will revert to the Watch Default Time screen.
Main (Default) Time, information includes (Fig. 5):
> Time of Day (hr:min:sec), Home (or Alternate if selected) with A or P if 12 hour format.
> Graphic CDT with countdown time (hr:min), when set On.
> Graphic ALT, if Alternate Time is selected as Default.
> Day of Week graphic MON, TUE, WED, THU, FRI, SAT, or SUN.
> Month.Day (or Day.Month).
> Time (clock) icon.
> Battery icon, if a Low Battery.
> Alarm (speaker) icon, if Daily Alarm is set On.
> TLBG, if any after NORM/FREE dives.
• A (< 2 sec) - to access Watch ALTs.
• M (< 2 sec) - to access Watch Menu.
• M (2 sec) - to access DC (Dive Computer) Mode.
• S (< 2 sec) - to silence Daily Alarm.
• S (2 sec) - to access Compass.
• L (press) - to activate Backlight.
Alt 1, information includes (Fig. 6):
> Time of Day (hr:min:sec), Alternate (or Home if selected).
> Graphic ALT, blank if Home Time is displayed.
> Day of Week graphic MON, TUE, WED, THU, FRI, SAT, or SUN.
> Month.Day (or Day.Month).
> Battery icon, if a Low Battery.
> Alarm (speaker) icon, if Daily Alarm is set On.
> TLBG with NI icon, if any after NORM/FREE dives.
• A (< 2 sec) - to access ALT 2.
• 5 sec - reverts to Watch Default if A is not pressed.
• L (press) - to activate Backlight.
Alt 2, information includes (Fig. 7):
> Altitude graphic EL2 (to EL 7), blank if Sea level.
> Temperature with ° icon and graphic F (or C).
• 5 sec, or A (< 2 sec) - revert to Watch Default.
• L (press) - to activate Backlight.
WATCH MENU
M (< 2 sec) - to access Menu, while viewing Default Time.
A (< 2 sec) - to step down (forward) through selections.
M (< 2 sec) - to step up (backward) through selections.
S (< 2 sec) - to access selection indicated by Arrow icon ( > ).
M or S (2 sec) - to revert to Default Time.
CDT (Countdown Timer) STATUS
Upon access, the following is displayed (Fig. 8/9) -
> Graphics CD TMR solid with OFF (or ON) flashing.
> Countdown Time (hr:min). If OFF, 0:00 or the CDT time if previously set. If ON, the remaining time (hr:min).
• A (< 2 sec) - to step through selections OFF, ON, and SET.
• S (< 2 sec) - to save the selection that is flashing.
>> If OFF is selected, operation reverts to the Menu with no CDT displayed.
>> If ON is selected, operation reverts to the Menu with the time set displayed and counting down.
>> If SET is selected (Fig. 10), Set CD Timer is accessed.
Fig. 5 - MAIN TIME
Fig. 6 - WATCH ALT 1
Fig. 7 - WATCH ALT 2
Fig. 9 - CDT STATUS
(if On upon access)
Fig. 10 - CDT STATUS
(to access Set, or set/ready)
Fig. 8 - CDT STATUS
(if Off upon access)
if set
On
13
OCS OPERATING MANUAL
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Set CDT, information includes (Fig. 11):
> Graphics SEt and CD TMR.
> CDT (hr:min) with Hour digits flashing.
> Time (clock) icon.
• A (hold) to scroll upward through Hour Set Points at a rate of 8 per second from 0: to 23: in increments of 1: (hr).
• A (< 2 sec) - to step upward through Set Points one at a time.
• M (< 2 sec) - to step back through 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 at a rate of 8 per second from :00 to :59 in increments of :01 (min).
• A (< 2 sec) - to step upward through Set Points one at a time.
• M (< 2 sec) - to step back through Set Points one at a time.
• S (< 2 sec) - to save the CDT Set Point and revert to the CDT Status screen with SET flashing (similar to Fig. 10).
• A (< 2 sec) - to select OFF (to save for later use) or ON (to start the countdown).
• S (< 2 sec) - to save the selection that is flashing.
>> If OFF is selected, operation reverts to the Menu with no CDT displayed.
>> If ON is selected, operation reverts to the Menu with the time set displayed and counting down.
When a set Countdown Time reaches 0:00, the Audible Alarm will sound during which time the CDT digits on the Watch Default
Time screen will be displayed as 0:00 flashing (Fig. 12).
FREE Dive Mode has a separate (min:sec) CDT.
CHRONOGRAPH (Stop Watch/Lap Timer)
Upon access from the Menu, the Status screen will be displayed.
Chrono Status, information includes (Fig. 13):
> Graphic CHRONO.
> 0:00:00.00 (hr:min:sec .01 sec) if not running, or elapsed time with graphic LAP1 (or 2 to 9) if running.
> Time (clock) icon.
• S (< 2 sec) - to start Timer counting up from 0:00:00.00 to 9:59:59.99 max (hr:min:sec .01 sec) in increments of .01
(1/100th sec). After the first 4.99 seconds, the .01 digits display 2 dashes (. - - ).
• S (< 2 sec) - to freeze Lap Times (1 up to 9), the Timer continues to run in the background.
• A (< 2 sec) - to stop Timer and recall Laps (1 to 9), repeat to recall other Laps (Fig. 14).
• A (2 sec) - to reset Timer to 0:00:00.00 and revert to the Chrono Status screen.
While the Chronograph is running, it remains on the screen until another screen is accessed, it will then continue to run in the
background while on the surface. Upon descending on a dive, Chrono operation will be terminated and reset to 0:00:00.00.
DAILY ALARM
When set On, the Daily Alarm will -
> be synchronized with the Watch Default Time selected.
> sound the Audible at the Time set every day.
> not sound the Audible while operating in DC Modes.
> run in the background until set Off.
Daily Alarm Status
Upon access, the following is displayed (Fig. 15) -
> Graphics DAILY AL solid, with OFF (or ON) flashing.
> Alarm Time (hr:min) set with graphic A (or P) if 12 Hour Format and Time (clock) icon.
• A (< 2 sec) - to step through selections OFF, ON, and SET.
• 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 (Fig. 16), Set Daily Alarm is accessed.
Set Daily Alarm, information includes (Fig. 17):
> Graphics SEt and DAILY AL.
> Alarm Time (hr:min) with Hour digits flashing with Time (clock) icon.
• A (hold) - to scroll upward through Hour Set Points at a rate of 8 per second from 0: to 23: in increments of 1: (hr).
• A (< 2 sec) - to step upward through Set Points one at a time.
• M (< 2 sec) - to step back through 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 at a rate of 8 per second from :00 to :59 in increments of :01 (min).
• A (< 2 sec) - to step upward through Set Points one at a time.
• M (< 2 sec) - to step back through Set Points one at a time.
• S (< 2 sec) - to save the Set Point and revert to the Daily Alarm Status screen with SET flashing (similar to Fig. 16).
Fig. 11 - SET CDT
Fig. 12 - WATCH MAIN
(during CDT Alarm)
Fig. 13 - CHRONO
(started, running)
Fig. 14 - CHRONO
(started, frozen or recalled)
Fig. 15 - DAILY ALARM
STATUS (upon access)
Fig. 17 - SET ALARM TIME
Fig. 16 - DAILY AL STATUS
(to access Set or set/ready)
14
OCS OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5272-r01 (9/28/11)
SET TIME MENU
• S (< 2 sec) - to access Set Time Menu, while the selection Arrow icon ( > ) is next to Set Time on the Watch Menu.
• A (< 2 sec) - to step down (forward) through selections.
• M (< 2 sec) - to step up (back) through selections.
• S (< 2 sec) - to access a Time Menu selection indicated by Arrow icon ( > ).
Set Date Format, information includes (Fig. 18):
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 FORMAT.
> Set Point graphics MNTH.DAY and DAY.MNTH; Arrow ( > ) icon next to the one previously saved flashing.
• A (< 2 sec) - to toggle Set Points.
• S (< 2 sec) - to save Set Point and revert to Set Time Menu.
Set Hour Format, information includes (Fig. 19):
> Graphic HOUR FORMAT.
> Set Point graphics 12 and 24; Arrow ( > ) icon next to the one previously saved flashing.
• A (< 2 sec) - to toggle Set Points.
• S (< 2 sec) - to save Set Point and revert to Set Time Menu.
Select Default Time, information includes (Fig. 20):
This feature selects whether Main (home) Time or Alternate (travel location) Time will be displayed as the Watch Default Time.
The other will be displayed on the Watch ALT 1 screen.
> Graphics SEL and DFLT TIME solid.
> Set Point graphics MAIN (home) and ALT (travel location, by Differential set); Arrow ( > ) icon next to the one previously
saved flashing.
• A (< 2 sec) - to toggle Set Points.
• S (< 2 sec) - to save Set Point and revert to Set Time Menu.
Set Alternate Time, information includes (Fig. 21):
This feature sets an Hour based numeric time Differential ranging from - 23 through 0 to + 23 (hours).
Once the Differential is selected/saved, Alternate Time/Date values are based on the Time of Day Set Points unless changed
while at a travel location with ALT Time selected as the Watch Default Time in which case Main (home) Time would change by a
differential opposite to the one previously set for ALT Time.
> Graphics SEt and ALT TIME solid.
> Set Point graphic OFF, or the +/ - numeric Hour Differential with graphic HR, all flashing.
• A (hold) - to scroll upward through Set Points at a rate of 8 per second from - 23 through 0 to + 23 in increments of 1.
• A (< 2 sec) - to step upward through Set Points one at a time.
• M (< 2 sec) - to step back through Set Points one at a time.
• S (< 2 sec) - to save the Differential Set Point and revert to the Set Time Menu.
Set Time of Day, information includes (Fig. 22):
This setting directly changes the Time of Day that is selected to be the Watch Default Time, whether it is Main (home) Time or
Alternate (travel location) Time. The other will be changed by the Time Differential set.
> Graphic TIME.
> Time of Day (hr:min), Hour digits flashing, with graphic A (or P) if 12 Hour Format.
> Graphic ALT, if Alternate is Default Time (at travel location).
• A (hold) - to scroll upward through Hour Set Points at a rate of 8 per second from 12: A to 11: P, or 0: to 23: if 24 Hour
Format, in increments of 1: (hr).
• A (< 2 sec) - to step upward through Set Points one at a time.
• M (< 2 sec) - to step back through 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 at a rate of 8 per second from :00 to :59 in increments of :01 (min).
• A (< 2 sec) - to step upward through Set Points one at a time.
• M (< 2 sec) - to step back through Set Points one at a time.
• S (< 2 sec) - to save the Time Set Point and revert to the Set Time Menu.
Set Date, information includes (Fig. 23):
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 at a rate of 8 per second from 2008 to 2051, in increments of 1
• A (< 2 sec) - to step upward through Set Points one at a time
Fig. 18 - SET DATE FORMAT
Fig. 19 - SET HOUR FORMAT
Fig. 22 - SET TIME
Fig. 23 - SET DATE
Day of the week is set
automatically based on the
Date set.
Fig. 21 - SET ALTERNATE
TIME
Fig. 20 - SET DEFAULT TIME
15
OCS OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5272-r01 (9/28/11)
• M (< 2 sec) - to step back through Set Points one at a time
• S (< 2 sec) - to save the Year Set Point and flash the Month digits
• A (hold) - to scroll upward through Month Set Points at a rate of 8 per second from 1 to 12 in increments of 1
• A (< 2 sec) - to step upward through Set Points one at a time
• M (< 2 sec) - to step back through Set Points one at a time
• S (< 2 sec) - to save the Month Set Point and flash the Day digits
• A (hold) - to scroll upward through Day Set Points at a rate of 8 per second from 1 to 31 (max) in increments of 1
• A (< 2 sec) - to step upward through Set Points one at a time
• M (< 2 sec) - to step back through Set Points one at a time
• S (< 2 sec) - to save the Date Set Point and revert to the Set Time Menu.
SUMMARY OF
WATCH MODE OPERATIONS
closure










M
2 sec
S
2 sec
A
< 2 sec
A
< 2 sec
A
< 2 sec





S
< 2 sec
S
< 2 sec
S
< 2 sec

S
< 2 sec
S
< 2 sec
A

S
< 2 sec
S
< 2 sec


S
< 2 sec
S
< 2 sec

M
< 2 sec
A
< 2 sec

A < 2 sec to toggle, step up
A hold to scroll up
M < 2 sec to step back
S < 2 sec to save




back to
Watch
back to
Status
back to
Status
back to
Menu
Date Format
Hour Format
Default Time
ALT Time
Time
Date
others similar
< 2 sec to Stop, Recall Laps
2 sec to Reset, back to Status
M
< 2 sec
M or S
2 sec
S 2 sec while viewing
the Main Menu to
revert to Watch Main.
S
2 sec
S
< 2 sec
S
2 sec
S
< 2 sec
S
2 sec
S
< 2 sec
back to Menu
if
SET
if ON
or OFF
17
OCS OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5272-r01 (9/28/11)
NORM SURFACE FUNCTIONS
L
closure

M
2 sec
S
2 sec
A
< 2 sec





















S
< 2 sec


M
2 sec


M
< 2 sec
A
< 2 sec
Shown is access to NORM from Watch,
then to GAUG from NORM.
Access from NORM to FREE, GAUG to
FREE, GAUG to NORM, FREE to NORM ,
and FREE to GAUG are similar.
M
< 2 sec
M or S
2 sec
DIVE COMPUTER OPERATING MODES
NORM Mode >> for Air and Nitrox SCUBA activity with up to 3 Gases.
GAUG Mode >> for SCUBA activity with Depth/Time indication.
FREE Mode >> for breath hold diving activity 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. Others accessed as indicated above.
At any time while operating in Surface Modes, operation will enter the Dive Mode selected upon descent to 5 FT (1.5 M) for 5 seconds.
• When Wet Activation is set OFF, Dive Mode will only be activated during operation in a DC Mode. It will not activate while in Watch Mode.
• 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 first 10 minutes on the surface after a NORM/GAUG dive, or 1 minute after a FREE dive >>
• The Dive Main will be displayed with Surface Interval time and access to Dive ALT screens.
• A descent during the first 10 minutes after surfacing from a NORM or GAUG dive, or the first 1 minute after surfacing from a FREE dive, is a continu-
ation of that dive.
After the 10 minute (or 1 minute) interval on the surface has elapsed >>
• The Surface Main will be displayed with accessed given to other surface displays.
• A descent is then considered a new dive.
S 2 sec while viewing
the NORM Menu to
revert to SURF Main.
S
< 2 sec
S
2 sec
18
OCS OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5272-r01 (9/28/11)
NORM SURF MAIN, information includes (Fig. 24/25):
> Graphic NORM.
> Graphic SURF and SI (hr:min) with Time (clock) icon; if no dive yet, this is time since access to NORM.
> Graphic DIVE and number of dives completed during that operating period, up to 24 (0 if no dive made yet).
> Nx icon, if any Gas is set for Nitrox.
> TLBG with NI icon, if any after a NORM or FREE dive.
> Battery icon, if voltage is low.
• A (< 2 sec) - to access ALT 1.
• M (< 2 sec) - to access NORM Menu.
• M (2 sec) - to access Watch Main.
• S (2 sec) - to access Compass OP Main**.
• L (press) - to activate Backlight.
** Compass can only be accessed from Main.
NORM SURF ALT 1 (Last), information includes (Fig. 26):
> Max Depth with MAX and FT (or M) icons, 2 dashes ( - - ) if no previous dive.
> Elapsed Dive Time (hr:min) with graphic EDT, 3 dashes ( - : - - ) if no previous dive.
> Graphic LAST DIVE, indicating that data is from the dive previously conducted while in NORM mode.
• A (< 2 sec) - to access ALT 2.
• 10 sec - revert to Main, if A is not pressed.
• L (press) - to activate Backlight.
NORM SURF ALT 2, information includes (Fig. 27):
> 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).
• 5 sec - revert to Main, if A is not pressed.
• L (press) - to activate Backlight.
NORM SURF ALT 3, information includes (Fig. 28):
> Graphic O2.
> Graphics FO2 and GAS 1 with FO2 Set Point.
> Nx icon.
> O2BG with O2 icon, if any after a dive.
• 5 sec or A (< 2 sec) - to revert to Main.
• L (press) - to activate Backlight.
NORM MENU
• M (< 2 sec) - to access Menu, while viewing 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 selection indicated by Arrow icon ( > ).
• M (2 sec) any time - to revert to Surface Main.
• S (2 sec), while viewing the menu - to revert to Surface Main.
• 2 min (no button action) - will revert to Surface Main.
FLY/DESAT TIME
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 count down timer, provides calculated time for tissue desaturation at sea level tak-
ing into consideration the Conservation Factor setting.
Desat Time also begins counting down 10 minutes after surfacing from a dive, counting down from 23:50 (max) to 0:00 (hr:min).
When the Desat count down 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.
Fig. 25 - NORM SURF MAIN
(after dive 1)
Fig. 24 - NORM SURF MAIN
(no dive yet)
Fig. 27 - NORM SURF ALT 2
Fig. 26 - NORM SURF ALT 1
(Last dive's data)
Fig. 28 - NORM SURF ALT 3
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Fly/Desat, information includes (Fig. 29/30):
> 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.
> Time (clock) icon.
• S (< 2 sec) - to revert to Menu.
• L (press) - to activate Backlight.
NORM PLAN 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 set for Gas 2 and 3 are not used.
NORM Menu >> Plan Lead-in >> PDPS
Plan Lead-in, information includes (Fig. 31A/B):
> Graphic PLAN.
> Graphic FO2_1 (Gas 1).
> Graphic Air or numeric % value (21 to 100), indicating the FO2 set for Gas 1.
> Graphic PO2 with PO2 Alarm value set (1.20 to 1.60), if Nitrox, blank if Air.
> Nx icon, if Nitrox.
• S (< 2 sec) - to access PDPS.
• L (press) - to activate Backlight.
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. 32A/B):
> Max Depth with MAX and FT (or M) icons, if Nitrox, blank if set for Air.
> Plan Depth value with graphic FT (or M).
> Graphic NDC (or OTR) with Dive Time allowed (hr:min) with Time (clock) icon, no OTR if Air.
> Graphic PO2 with PO2 Alarm value set for Gas 1 (1.20 to 1.60), if Nitrox, blank if set for Air.
> Nx icon, if Nitrox.
• A (hold) to scroll upward through screens at a rate of 8 per second increasing planned Depth 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 revert to the Plan Lead-in screen.
• L (press) - to activate Backlight.
NORM/GAUG LOG MODE
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.
NORM Menu >> Log Preview >> Log Data 1 >> Log Data 2
Log Preview, information includes (Fig. 33):
> Log Mode (book) icon.
> Graphic NO-D (or DECO or GAUG or VIOL).
> Graphic DIVE and dive number (1 to 24, 0 if no dive yet).
> Time dive began (hr:min) with Time (clock) icon and A (or P), and the graphic ALT if Alternate Time.
> Date, the dive was conducted.
> Nx icon, if Nitrox.
• A (hold) - to scroll upward through Preview screens at a rate of 8 per second.
• 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 access that dive's Log Data 1 screen.
• L (press) - to activate Backlight.
Fig. 29 - FLY/DESAT
(10 min after dive)
Fig. 30 - FLY/DESAT
(< 10 min after dive)
Fig. 31A - PLAN LEAD-IN
(Gas 1 set for Air)
Fig. 31B - PLAN LEAD-IN
(Gas 1 set for Nitrox)
Fig. 32A - PDPS
(nitrogen control)
Fig. 32B - PDPS
(oxygen control)
Fig. 33 - LOG PREVIEW
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Log Data 1, information includes (Fig. 34):
> Log Mode (book) icon.
> Max Depth with MAX and FT (or M) icons.
> Graphic DSAT (or Z+), the Algorithm selected.
> Graphic EDT with Dive Time (hr:min).
> Graphic SURF and pre dive SI (hr:min), 0:00 if Dive # 1, 9: - - if > 9:59, with Time (clock) icon.
> Temperature (minimum that dive) with ° icon and graphic F (or C).
> 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 sec.
> Nx icon, if Nitrox.
• S (< 2 sec) - to access the dive's Log Data 2 screen if Nitrox, or revert to the Preview screen if Air or a Violation.
• L (press) - to activate Backlight.
Log Data 2 (Nitrox only), information includes (Fig. 35):
> Log Mode (book) icon.
> Graphic GAS 1 (or 2 or 3), in use when dive ended.
> Graphic FO2 with FO2 Set Point (or graphic Air) for Gas in used when dive ended.
> Graphic PO2 with value of Max PO2 achieved.
> Nx icon.
> O2BG with O2 icon, accumulated when dive ended.
• S (< 2 sec) - to revert to the Preview screen.
• L (press) - to activate Backlight.
SET F (FO2)
Each Gas has an individual FO2 and an associated PO2 Alarm setting.
Default settings are FO2 Air with no PO2 value for Gas 1, and Off for Gas 2 & 3. Settings revert to the defaults when 24 hours
elapse without conducting a dive.
When FO2 is set for Air -
> calculations are the same as when FO2 is set for 21%.
> it remains set for Air until set for Nitrox (21 to 100%).
> O2 data (such as PO2, O2%) will not be displayed at any time during the dive, on the surface, or in Plan mode.
> MODs (Max Operating Depths) will not be displayed on the FO2 set screen.
> internally, it will keep track of O2 data for use if FO2 is subsequently set for Nitrox for repetitive dives.
When FO2 is set for Nitrox -
> The Air option will not be displayed as an FO2 setting until 24 hours elapse after the last dive.
When FO2 is set for OFF (Gas 2, 3) -
> That Gas will not be available in the Gas Switch routine during dives (no Switch To - screen).
FO2 50% Default -
> When the Default is set OFF, FO2 values will remain set at their last settings saved until 24 hours elapse without conducting
a dive.
> When the Default is set ON and FO2 is set for Nitrox, 10 minutes on the surface after that dive the FO2 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 FO2 is set before the dive.
> FO2 will continue to reset to the Default after repetitive dives until 24 hours elapse with no dive, or the Default is set OFF.
SET F (FO2) MENU
Menu selections (Fig. 36) >> Gas 1 >> Gas 2 >> Gas 3 >> FO2 Default.
• S (< 2 sec) - to access Set F Menu while the selection Arrow icon ( > ) is next to Set F on the NORM Menu.
• A (< 2 sec) - to step down (forward) through selections.
• M (< 2 sec) - to step up (back) through selections.
• S (< 2 sec) - to access selection indicated by Arrow icon ( > ).
The last setting saved, or the default, is displayed next to each Menu item.
SET GAS 1 FO2/PO2, information includes:
> Max Depth allowed for the PO2 Alarm setting displayed, blank when Air.
> Graphic GAS1.
> Graphic FO2 with setting Air or 21 to 100 flashing (Fig. 37A/B).
> Graphic PO2 with Alarm value set.
> Nx icon (if Nitrox, numerical values), blank if Air.
A (press/hold), while the FO2 digits are flashing - to scroll upward through the Set Points from Air to 21 through 100 in 1%
increments, at a rate of 8 per second.
>> The scroll will stop when the button is released, or momentarily at 32, then 50, then 80 (%).
Fig. 34 - LOG DATA 1
Fig. 35 - LOG DATA 2
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Fig. 37A - SET GAS 1 FO2
(default)
Fig. 37B - SET GAS 1 FO2
(Nitrox)
Fig. 38 - SET GAS 1 PO2
ALARM
Fig. 36 - SET F MENU
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A (< 2 sec) - to step upward through FO2 Set Points.
M (< 2 sec) - to step back through FO2 Set Points.
S (< 2 sec) - save the FO2 setting and flash the PO2 digits (Fig. 38, page 20), or revert to SURF MAIN if Air.
A (< 2 sec) - to step upward through PO2 Alarm Set Points from 1.20 to 1.60 (ATA) in .05 increments.
M (< 2 sec) - to step back through PO2 Set Points.
S (< 2 sec) - to save the PO2 setting and access Set Gas 2.
S (2 sec) - to revert to Set F displaying the settings.
M (2 sec) - to revert to SURF MAIN, or if no button is pressed during a 2 minute period.
SET GAS 2 FO2/PO2, information includes:
> Max Depth allowed for the PO2 Alarm setting displayed, blank when Air.
> Graphic GAS2.
> Graphic FO2 with setting OFF, Air, or 21 to 100 flashing (Fig. 37A/B, page 20).
> Graphic PO2 with Alarm value set, blank if OFF or Air.
> Nx icon (if Nitrox, numerical values), blank if OFF or Air.
A (press/hold), while the FO2 digits are flashing - to scroll upward through the Set Points from Air to 21 through 100 in 1%
increments, at a rate of 8 per sec.
>> The scroll will stop when the button is released, or momentarily at 32, then 50, then 80 (%).
A (< 2 sec) - to step upward through FO2 Set Points.
M (< 2 sec) - to step back through FO2 Set Points.
S (< 2 sec) - to save the FO2 setting and flash the PO2 digits (Fig. 38, page 20), or revert to SURF MAIN if Air.
A (< 2 sec) - to step upward through PO2 Alarm Set Points from 1.20 to 1.60 (ATA) in 0.05 increments.
M (< 2 sec) - to step back through PO2 Set Points.
S (< 2 sec) - to save the FO2 setting and access Set Gas 3.
S (2 sec) - to revert to Set F displaying the settings.
M (2 sec) - to revert to SURF MAIN, or if no button is pressed during a 2 minute period.
SET GAS 3 FO2/PO2 is similar to SET GAS 2.
Once any Gas is set for Nitrox, any other Gas set for Air will automatically be set to 21%.
SET FO2 50% DEFAULT, information includes (Fig. 39):
> Graphics DEFAULT and 50.
> Set Point graphic OFF (or ON), flashing.
> Nx icon.
• S (< 2 sec) - to toggle between OFF and ON.
• A (< 2 sec) - to save the setting and revert to Set F.
SET A (ALARMS) MENU
S (< 2 sec) - to access Set A Menu while the selection Arrow icon ( > ) is next to Set A on the NORM (or GAUG) Menu.
A (< 2 sec) - to step down (forward) through selections.
M (< 2 sec) - to step up (back) through selections.
S (< 2 sec) - to access selection indicated by Arrow icon ( > ).
Set Audible Alarm, information includes (Fig. 40):
> Graphic AUDIBLE.
> Set Point graphics ON and OFF; Arrow ( > ) icon next to the one previously saved flashing.
• A (< 2 sec) - to toggle Set Points.
• S (< 2 sec) - to save the setting and revert to the Set A Menu.
Set Depth Alarm, information includes (Fig. 41):
> Graphic DEPTH AL.
> Graphic OFF flashing, or Depth value flashing with FT (or M) and MAX icons.
• A (hold) - to scroll upward through Set Points at a rate of 8 per sec from 30 to 330 FT (10 to 100 M) in increments of 10 FT
(1 M).
• A (< 2 sec) - to step upward through Set Points one at a time.
• M (< 2 sec) - to step back through Set Points one at a time.
• S (< 2 sec) - to save the setting and revert to the Set A Menu.
There is a separate alarm associated with exceeding the MOD (max operating depth) which is a violation described later.
FREE mode has separate Depth Alarms that are not affected by this setting.
Set EDT Alarm, information includes (Fig. 42):
> Graphic EDT AL
> Elapsed Dive Time value (hr:min) flashing with MAX and Time (clock) icons
Fig. 39 - SET FO2 DEFAULT
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
** NORM only
Fig. 40 - SET AUDIBLE AL
Fig. 41 - SET DEPTH AL
Fig. 42 - SET EDT AL
Fig. 43 - SET TLBG AL
Fig. 44 - SET DTR AL
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• A (< 2 sec) - to toggle Set Points.
• S (< 2 sec) - to save the setting and revert to the Set U Menu.
This feature allows selection of the algorithm used for nitrogen and oxygen calculations. Refer to page 26.
Set Conserv, information includes (Fig. 50):
> Graphic CONSERV (= Conservative Factor).
> Set Point graphics ON and OFF, Arrow ( > ) icon next to the one previously saved flashing.
• A (< 2 sec) - to toggle Set Points.
• S (< 2 sec) - to save the setting and revert to the Set U Menu.
When set On, NDLs are reduced to those of the next higher 3000 foot (915 meter) Altitude. Refer to the charts in the back.
Set Glo Dura, information includes (Fig. 51):
> Graphics GLO (= Backlight) and DURATION.
> Set Point 0 (or 5, 10, 30, 60) flashing with graphic SEC.
• A (< 2 sec) - to step upward through Set Points one at a time.
• M (< 2 sec) - to step back through Set Points one at a time.
• S (< 2 sec) - to save the setting and revert to the Set U Menu.
Glo Dura (Backlight Duration) is the time the backlight will remain On after L is released.
Set Sampling, information includes (Fig. 52):
> Set Point graphics 2 SEC, 15 SEC, 30 SEC, and 60 SEC; Arrow ( > ) icon next to the one previously saved flashing.
• A (< 2 sec) - to step upward through Set Points one at a time.
• M (< 2 sec) - to step back through Set Points one at a time.
• S (< 2 sec) - to save the setting and revert to the Set U Menu.
Sampling is the rate data is sampled and stored for download to the associated PC Interface program. Refer to pages 9 & 54.
SELECT DIVE MODE
S (< 2 sec) - to access Set Dive Mode while the selection Arrow icon ( > ) is next to it on the NORM Menu
Information includes (Fig. 53):
> Graphic SEL (= Select).
> Graphics NORM MODE, GAUG MODE, and FREE MODE; Arrow ( > ) icon next to mode currently active.
• A (< 2 sec) - to step upward through selections one at a time.
• M (< 2 sec) - to step back through selections one at a time.
• S (< 2 sec) - to save the selection and access that mode's Surface Main screen.
NORM/GAUG HISTORY MODE
S (< 2 sec) - to access History 1 while the selection Arrow icon ( > ) is next to History on the NORM (or GAUG) Menu
History 1, information includes (Fig. 54):
> Graphic HIST.
> Total number dives ever recorded (up to 9999) with graphic DIVES, 0 if no dive yet.
> Total hours of EDT (dive time) ever recorded (up to 9999) with graphic Hour and Time (clock) icon, 0 if < 1 hour.
• S (< 2 sec) - to access History 2.
History 2, information includes (Fig. 55):
> Max Depth ever (up to 400 FT/120 M) with FT (or M) and MAX icons.
> Graphic HIST.
> Graphic SEA, or EL2 to EL7, highest Altitude at which a dive was conducted.
> Temperature with ° icon and graphic F (or C), lowest recorded during any dive.
• S (< 2 sec) - to revert to NORM (or GAUG) Menu.
SERIAL NUMBER
S (< 2 sec) - to access while the selection Arrow icon ( > ) is next to it on the NORM Menu.
Information includes (Fig. 56):
> Graphic SN (= Serial Number).
> OCS's factory programmed SN.
> Graphic r1A (or higher), indicating the revision level of the Firmware (OCS's operating software); followed by 01 (or
higher), indicating the revision level of the Display.
• S (< 2 sec) - to revert to the GAUG Menu if in GAUG mode; or to access Clear (reset) if NORM,
refer to page 54
.
• S (2 sec) - to revert to the NORM if in NORM mode.
Fig. 50 - SET CONSERVA-
TIVE FACTOR
Fig. 51 - SET BACKLIGHT
DURATION
Fig. 52 - SET SAMPLING
RATE
Fig. 53 - SELECT DIVE
MODE
Fig. 54 - HISTORY 1
Fig. 55 - HISTORY 2
Fig. 56 - SERIAL NUMBER
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DIVE MODE
FEATURES
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© 2002 Design, 2011 Doc. No. 12-5272-r01 (9/28/11)
WET ACTIVATION
The OCS is configured with contacts that will automatically activate Dive Mode when the space between the contacts is bridged
by a conductive material (immersed in water) and it senses a Depth of 5 FT (1.5 M) for 1 second.
The contacts are the metal pins of the PC Interface Data Port and the stems of the buttons.
When Wet Activation is set Off, the OCS will not enter Dive Mode while in Watch Mode unless a dive has already been con-
ducted and it is a repetitive dive.
BACKLIGHT
Press L (Light) button to activate.
• The Backlight will be On for L depression time plus the Duration time set (0, 5, 10, 30, or 60 sec).
• Press L while the light is On to reset the timer and keep it On for the full Duration.
• Shuts Off if L is depressed for more than 10 sec.
> Extensive use of the Backlight reduces Battery life.
> The Backlight does not operate during a Low Battery condition (< 2.75 v), or when the Oceanlog PC Interface cable is
connected to the OCS.
BAR GRAPHS
The OCS features 2 bar graphs, one on each side of the LCD.
> The one on the left is dual function. It represents either Nitrogen loading or Oxygen accumulation. The icons NI and O2
identify which is displayed at that time.
> Throughout this manual, it is referred to as the NIBG (or TLBG = Tissue Loading Bar Graph) or the O2BG.
> Regardless of which parameter the Bar Graph is representing at the time, nitrogen and oxygen calculations will continue
to be performed in the background.
> The one on the right represents ascent rate. It is referred to as the VARI (= Variable Ascent Rate Indicator).
TLBG
The TLBG represents your relative No Decompression (Fig. 57a) or Decompression status (Fig. 58a). The lower 4 segments
represent No Deco status and the fifth at the top indicates a Deco condition. As your Depth and Elapsed Dive Time increase, seg-
ments add; and as you ascend segments recede, indicating that additional no deco time is available.
The OCS monitors 12 different nitrogen compartments simultaneously and the TLBG displays the one that is in control of your dive
at any given time.
O2BG
When operating in NORM Nitrox mode, the O2BG (Fig. 59a) will be displayed on an Alternate screen. It represents oxygen
exposure, either oxygen accumulated during a dive or over a period of 24 hours.
As your oxygen exposure increases, segments will add to the O2BG, and as it decreases, they will begin to recede, indicating
that additional exposure is allowed for that dive and 24 hour period.
The OCS will store O2 calculations for up to 10 dives conducted during a 24 hour period. If the limit for O2 is reached (100%
= 300 OTU), all 5 segments of the O2BG will be displayed on the Main dive screen in place of the TLBG (Fig. 60a).
After surfacing, Plan Mode will not be available until the O2BG recedes into the normal zone (4 segments).
VARI
The VARI (Fig. 61a) provides a visual representation of ascent speed (i.e., an ascent speedometer).
The segments represent two sets of speeds which change at a reference depth of 60 FT (18 M). Refer to the chart.
When ascent is too fast, all segments will be displayed flashing (Fig. 62) until ascent is slowed.
WARNING: At depths greater than 60 FT (18 M), ascent rates should not exceed 60 FPM (18 MPM).
At depths of 60 FT (18 M) and shallower, ascent rates should not exceed 30 FPM (9 MPM).
Fig. 57 - NO DECO
Fig. 58 - DECO
a
a
Fig. 59 - NO DECO ALT
Fig. 60 - DIVE MAIN
(High O2)
a
a
Fig. 61 - GAUG DIVE
Fig. 62 - DIVE MAIN
(Ascent Too Fast)
a
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Ascent Rate
Segments FPM MPM
0 0 - 20 0 - 6
1 21 - 30 6.1 - 9
2 31 - 40 9.1 - 12
3 41 - 50 12.1 - 15
4 51 - 60 15.1 - 18
5 60 + 18 +
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Ascent Rate
Segments FPM MPM
0 0 - 10 0 - 3
1 11 - 15 3.1 - 4.5
2 16 - 20 4.6 - 6
3 21 - 25 6.1 - 7.5
4 26 - 30 7.6 - 9
5 30 + 9 +
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ALGORITHM (Dual)
The OCS is configured with 2 algorithms which allows you to choose which set of NDLs (No Deco Limits) will be used for Ni/O2 calculations and displays
relating to Plan and DTR (Dive Time Remaining).
You can select DSAT or Z+. The selection will lock in for 24 hours after the last dive.
DSAT has been the standard used by Oceanic in all of its dive computers until this time. It features NDLs that are based on exposures and test data which
also formed validation for the PADI RDP. It imposes restrictions for repetitive Deco dives, considered more risky.
Z+ (Pelagic Z+) performance is based on Buhlmann ZHL-16c. It features NDLs that are considerably more conservative especially at shallower depths.
To create even greater margins of safety with respect to decompression, a Conservative Factor as well as No Deco Deep and Safety Stops can be included
for No Deco dives.
CONSERVATIVE FACTOR (CF)
When the CF is set On, the NDLs which are based on the algorithm selected and used for Ni/O2 calculations and displays relating to Plan and DTR, will
be reduced to the values available at the altitude level that is 3,000 feet (915 meters) higher.
DEEP STOP (DS)
When the DS selection is set On, it will trigger during NORM No Deco dives when you descend to 80 FT (24 M) and calculate (and continually update) a
Stop Depth equal to 1/2 the Max Depth.
While 10 FT (3 M) deeper than the calculated DS, you will be able to access a DS Preview screen that will display the current DS Stop Depth/Time (fixed
at 2 min) for 5 seconds then return to the Main.
Upon initial ascent to within 10 FT (3 M) below the calculated Stop Depth, a DS screen displaying a Stop Depth at 1/2 the Max Depth will appear with a
Countdown Timer beginning at 2:00 (min:sec) and counting down to 0:00.
> If you descend 10 FT (3 M) below, or ascend 10 FT (3 M) above, the calculated Stop Depth for 10 seconds during the countdown, the No Deco Main
will replace the DS Main display and the DS feature will be disabled for the remainder of that dive. There is no Penalty if the DS is ignored.
> In the event that you enter Deco, exceed 190 FT (57 M), or a High O2 condition (=> 80%) occurs, the DS will be disabled for the remainder of that
dive.
> The DS is disabled during a High PO2 Alarm condition (while => Set Point).
SAFETY STOP (SS)
If set On:
Upon ascent to within 5 FT (1.5 M) deeper than the SS Depth set for 1 second on a No Deco dive in which Depth exceeded 30 FT (9 M) for 1 second, the
audible will sound and a SS at the Depth set will be displayed with a countdown beginning at the SS Time set and counting down to 0:00 (min:sec).
• If the SS was set for OFF or Timer On, the display will not appear.
• In the event that you descend 10 FT (3 M) deeper than the Stop Depth for 10 seconds during the countdown, or the countdown reaches 0:00, the No
Deco Main will replace the SS Main which will reappear upon ascent to within 5 FT (1.5 M) deeper than the Safety Stop Depth set for 1 second.
• In the event that you enter Deco during the dive, complete the Deco obligation, then descend below 30 FT (9 M); the SS Main will appear again upon
ascent to within 5 FT (1.5 M) deeper than the SS Depth set for 1 second.
• If you surface prior to completing it, the SS will be canceled for the remainder of that dive.
• There is no Penalty if you surface prior to completing the SS or ignore it.
If set for Timer On:
Upon ascending to 20 FT (6 M) for 1 second on a No Deco dive in which Depth exceeded 30 FT (9 M) for 1 second, the audible will sound and a Run
Timer will appear displaying 0:00 (min:sec) until started.
• If the SS was set for Off or On, the Timer display will not appear.
• If you descend deeper than 30 FT (9 M) for 10 seconds, the No Deco Main will replace the SS Timer screen which will reappear upon ascent to 20 FT
(6 M) for 1 second.
• If you ascend above 10 FT (3 M) for 10 seconds, or enter Deco, or a High O2 alarm condition occurs (100%), while the SS Timer is active, the SS
Timer will be disabled for the remainder of that dive.
• If you surface prior to completing it, the SS will be canceled for the remainder of that dive.
• There is no Penalty if you surface prior to completing the SS or ignore it.
OVERVIEW OF FO2 SETTINGS AND 50% DEFAULT
Refer to page 20 for Set F (FO2) items. For each numeric value of FO2 displayed on set screens, the MOD (Max Operating Depth) that can be achieved
with the PO2 Alarm set will be displayed.
FO2 50% Default (only for NORM Nitrox Dives)
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 Gas 1 will be dis-
played as 50 and further dives will be calculated based on 50% O2 for oxygen calculations and 21% O2 for Nitrogen calculations (79% Nitrogen) unless
FO2 Gas 1 is set before the dive.
FO2 Gas 1 will continue 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 set Off.
When the FO2 50% Default is set Off, the OCS will remain set at the last FO2 Gas 1 Set Point for that period of activation.
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FO2 set to Air
The default FO2 Gas 1 each new dive period will be Air. When FO2 Gas 1 is set for Air, calculations are the same as when
FO2 is set for 21%. When FO2 Gas 1 is set for Air, it will remain set for Air until set for a numerical FO2 value (21 to 100%).
When FO2 Gas 1 is set for Air, the O2BG will not be displayed at any time during the dive, on the surface, or during the PDPS.
PO2 will not be displayed during the dive.
The Max Operating Depth (MOD) will not be displayed on the FO2 set screen when Air is displayed.
Internally, the OCS will keep track of accumulated oxygen so that if FO2 for Gas 1 is subsequently set for Nitrox, O2 for previous
Air dives will be accounted for in the next Nitrox dive (during that dive period and series of repetitive dives).
FO2 set for Nitrox
When FO2 for any Gas is set for a numerical value, the dive is considered Nitrox and the Nx icon will be displayed.
Once FO2 Gas 1 is set for a numerical value (21 to 100%), the Air option is disabled until 24 hours elapse after the last dive.
• The Air option will not be displayed in Set FO2 for Gas 1 until a full 24 hour Surface Interval has elapsed.
• If the FO2 50% Default is set Off, FO2 remains at the values set until changed. If the Default is set On, all FO2 values
default to 50%.
DIVE TIME REMAINING (DTR)
The OCS constantly monitors No Deco status and O2 Accumulation, and will display whichever Time is the least amount avail-
able as DTR on the No Deco Dive Main screen (Fig. 63). The graphic NDC or OTR will identify the Time displayed.
No Deco DTR (NDC)
NDC is the maximum amount of time that you can stay at your present Depth before entering Deco. It is calculated based on the
amount of Nitrogen absorbed by hypothetical tissue compartments. The rates each of these compartments absorb and release
Nitrogen is mathematically modeled and compared against a maximum allowable Nitrogen level.
Whichever one is closest to this maximum level is the controlling compartment for that Depth. Its resulting value will be displayed
NDC time (Fig. 63a) and graphically as the TLBG (Fig. 63b).
As you ascend, the TLBG segments will recede as control shifts to slower compartments. This is a feature of the Decompression
Model that is the basis for Multilevel Diving, one of the most important advantages that Oceanic dive computers offer.
O2 DTR (OTR)
When the OCS is set for Nitrox operation, O2 accumulation during a dive, or 24 hour period, is dis-
played as the O2BG on an ALT screen (Fig. 64a). As time remaining before reaching the O2 Exposure
Limit decreases, segments are added to the O2BG.
When the amount of time remaining before reaching the O2 Limit becomes less than the NDC, calculations for that Depth will be
controlled by O2 and OTR will be displayed as DTR on the Main.
ERROR (RESET DURING A DIVE)
If for any reason, the OCS shuts Off then turns On again during any Dive, the graphic ERR (Error) will be displayed with the Up
Arrow icon and current Depth with FT (or M) icon (Fig. 65).
If this occurs, it is highly recommended that you terminate the dive and begin a safe ascent to the surface.
Upon surfacing, ERR will be displayed for 5 seconds (Fig. 66) and operation will revert to Watch Mode.
Any time thereafter, when access to Dive Computer Operating Mode is attempted from Watch Mode, only the graphic ERR will
be displayed and operation will revert to Watch Mode. No Dive Computer modes/screens will be accessible.
If this occurs, the OCS must be returned to the factory for evaluation/service prior to any further use for diving activities.
b
Fig. 63 -NO DECO MAIN
a
a
Fig. 64 -NO DECO ALT 1
Fig. 65 -ERROR
(during dive)
Fig. 66 -ERROR
(after surfacing)
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NORM
DIVE MODES
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Fig. 67 - NO DECO MAIN
NO DECO MAIN, information includes (Fig. 67) -
> Current Depth with FT (or M) icon, *
or dashes during the first 10 minutes on the surface.
> DTR (hr:min) with graphic NDC (or OTR), whichever is less at the time, *
or dashes during the first 10 minutes on the surface
.
> *
Surface Interval Time (hr:min) with graphic SURF and time (clock) icon during the first 10 minutes on the surface
.
> Graphic GAS1 (or 2 or 3), one in use.
> Nx icon, if any Gas is set for Nitrox.
> TLBG with NI icon.
> VARI while ascending.
*The Dive Main continues to be displayed during the first 10 minutes after surfacing with
access to Dive ALTs.
• A (< 2 sec) to access ALTs.
• A (2 sec) to access Deep Stop Preview**, if triggered.
• M (< 2 sec) to access Gas Switching**.
• S (< 2 sec) to acknowledge alarms.
• S (2 sec) to access Compass**.
• L (press) to activate Backlight.
**These items can only be accessed while viewing the Main.
No Deco Alt 1, information includes (Fig. 68) -
> Max Depth with FT (or M) and MAX icons.
> Elapsed Dive Time (hr:min) with graphic EDT.
> FO2 Set Point for Gas in use with graphic FO2.
> Current PO2 value (ATA) with graphic, if Nitrox.
> Nx icon, if Nitrox.
> O2BG with O2 icon, if Nitrox.
• A (< 2 sec) - to access ALT 2.
• Revert to Main in 5 sec, if A not pressed.
No Deco Alt 2, information includes (Fig. 69) -
> Time of Day (hr:min sec), with A (or P) if 12 Hour.
> Temperature with ° icon and graphic F (or C).
• 5 sec or A (< 2 sec), revert to Main.
Deep Stop Preview, information includes (Fig. 70) -
> Stop Depth with graphic FT (or M) and countdown Time as 2:00 (min:sec).
> Graphic DEEP STOP.
• 5 sec, revert to No Deco Main.
• L (press) - to activate Backlight.
DEEP STOP MAIN, information includes (Fig. 71) -
> Current Depth with FT (or M) icon.
> Stop Depth with graphic FT (or M) and remaining countdown Time (min:sec).
> Graphic GAS1 (or 2 or 3), one in use.
> Nx icon, if any Gas is Nitrox.
> TLBG with NI icon.
• A (< 2 sec) - to access ALTs.
• M (< 2 sec) - to access Gas Switching.
• S (< 2 sec) - to acknowledge alarms.
• S (2 sec) - to access Compass.
• L (press) - to activate Backlight.
Deep Stop Alt 1, information includes (Fig. 72) -
> Max Depth with MAX and FT (or M) icon.
> DTR (hr:min) with graphic NDC (or OTR if less).
> Elapsed Dive Time (hr:min) with graphic EDT.
> FO2 Set Point for Gas in use with graphic FO2.
> Current PO2 value (ATA) with graphic, if Nitrox.
> Nx icon, if Nitrox.
> O2BG with O2 icon, if Nitrox.
• A (< 2 sec) - to access ALT 2.
• Revert to Main in 5 sec, if A not pressed.
Deep Stop Alt 2, information includes (Fig. 73) -
> Time of Day (hr:min sec), with A (or P) if 12 Hour.
> Temperature with ° icon and graphic F (or C).
• 5 sec or A (< 2 sec), revert to Main.
Fig. 68 - NO DECO ALT 1
Fig. 69 - NO DECO ALT 2
Fig. 70 - DEEP STOP
PREVIEW
Fig. 71 - DEEP STOP MAIN
Fig. 72 - DEEP STOP ALT 1
Fig. 73 - DEEP STOP ALT 2
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SAFETY STOP MAIN (if Stop Depth/Time set On), information includes (Fig. 74) -
> Current Depth with FT (or M) icon.
> Stop Depth with FT (or M) and remaining countdown Time (min:sec).
> Graphics SAFETY STOP and GAS1 (or 2 or 3), one in use.
> Nx icon, if any Gas is Nitrox.
> TLBG with NI icon.
• A (< 2 sec) - to access ALTs.
• M (< 2 sec) - to access Gas Switching.
• S (< 2 sec) - to acknowledge alarms.
• S (2 sec) - to access Compass.
• L (press) - to activate Backlight.
SAFETY STOP MAIN (if set for Timer use), information includes (Fig. 75) -
> Current Depth with FT (or M) icon.
> Grahic TMR (= Timer) and Run Time counting up to 9:59 max (min:sec) then - : - - .
> Graphic GAS1 (or 2 or 3), one in use.
> Nx icon, if any Gas is Nitrox.
> TLBG with NI icon.
• A (< 2 sec) - to access ALTs.
• M (< 2 sec) - to access Gas Switching.
• S (< 2 sec) - to acknowledge alarms.
• S (< 2 sec) - to Start/Stop the Timer, blocked when S if pressed to acknowledge alarms.
• A (2 sec), when the Timer is stopped - to reset it o 0:00.
• S (2 sec) - to access Compass.
• L (press) - to activate Backlight.
Safety Stop Alt 1, information includes (Fig. 76) -
> Max Depth with FT (or M) and MAX icons.
> DTR (hr:min) with graphic NDC (or OTR if less).
> Elapsed Dive Time (hr:min) with graphic EDT.
> FO2 Set Point for Gas in use with graphic FO2.
> Current PO2 value (ATA) with graphic, if Nitrox.
> Nx icon, if Nitrox.
> O2BG with O2 icon, if Nitrox.
• A (< 2 sec) - to access ALT 2.
• Revert to Main in 5 sec, if A is not pressed.
Safety Stop Alt 2, information includes (Fig. 77) -
> Time of Day (hr:min sec), with A (or P) if 12 Hour.
> Temperature with ° icon and graphic F (or C).
• 5 sec or A (< 2 sec), revert to Main.
DECOMPRESSION MODE
Decompression mode activates when theoretical No Decompression time and depth limits are exceeded.
Upon Entry into Deco, the Audible will sound and the LED will flash. The full TLBG and Up Arrow icon will flash (Fig. 78), until
the Audible is silenced.
• S (< 2 sec) - to silence Audible.
> Up Arrow icon flashes if 10 FT (3 M) deeper than the required Stop Depth.
> Once within 10 FT (3 M) of and below the required Stop Depth (stop zone), the full Stop icon (both Arrows with Stop Bar)
will be displayed solid.
• L (press) - to activate the Backlight.
Managing Deco Stops
To fulfill your decompression obligation, you should make a safe controlled Ascent to a depth slightly deeper than, or equal to,
the required Stop Depth indicated and decompress for the Stop Time indicated.
The amount of decompression credit time that you receive is dependent on Depth, with slightly less credit given the deeper you
are below the Stop Depth indicated.
You should stay slightly deeper than the required Stop Depth indicated until the next shallower Stop Depth appears. Then, you
can slowly ascend to, but not shallower than that indicated Stop Depth.
Fig. 74 - SAFETY STOP MAIN
(Stop Depth/Time set)
Fig. 76 - SAFETY STOP ALT 1
Fig. 77 - SAFETY STOP ALT 2
Fig. 78 - DECO ENTRY
Fig. 75 - SAFETY STOP MAIN
(set for Timer use)
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Fig. 81 - DECO STOP ALT 2
Fig. 80 - DECO STOP ALT 1
DECO STOP MAIN, information includes (Fig. 79) -
> Full Stop icon (Stop Bar with both Arrows) solid.
> Current Depth with FT (or M) icon.
> Stop Depth with graphic FT (or M) and remaining Stop Time (hr:min).
> Graphics DECO STOP and GAS1 (or 2 or 3), one in use.
> Nx icon, if any Gas is Nitrox.
> Full TLBG with NI icon.
• A (< 2 sec) - to access ALTs.
• M (< 2 sec) - to access Gas Switching.
• S (< 2 sec) - to acknowledge alarms.
• S (2 sec) - to access Compass.
• L (press) - to activate Backlight.
Deco Stop Alt 1, information includes (Fig. 80) -
> Max Depth with FT (or M) and MAX icons.
> Graphic TAT with Total Ascent Time** (hr:min).
> Elapsed Dive Time (hr:min) with graphic EDT.
> FO2 Set Point for Gas in use with graphic FO2.
> Current PO2 value (ATA) with graphic, if Nitrox.
> Nx icon, if Nitrox.
> O2BG with O2 icon, if Nitrox.
**TAT includes Stop Times at all required Deco Stops plus vertical Ascent Time based on the max rate allowed.
• A (< 2 sec) - to access ALT 2.
• Revert to Main in 5 sec, if A not pressed.
Deco Stop Alt 2, information includes (Fig. 81) -
> Time of Day (hr:min sec), with A (or P) if 12 Hour.
> Temperature with ° icon and graphic F (or C).
• 5 sec or A (< 2 sec), revert to Main.
CONDITIONAL VIOLATION (CV)
Upon ascent above the required Deco Stop Depth, operation will enter CV during which no off gassing credit will be given; with
remaining Deco Stop Time and TAT freezing.
The Audible will sound and the LED will flash. The full TLBG and Down Arrow icon will flash (Fig. 82) until the Audible is si-
lenced, then the TLBG will be solid.
• S (< 2 sec) - to silence Audible.
> The graphic ABOVE STOP will be displayed and the Down Arrow icon will flash until descent is made to below the
required Stop Depth (within Stop Zone), then full the Stop icon (Stop Bar with both Arrows) will be on solid.
• L (press) - to activate the Backlight.
If descent below the required Deco Stop Depth is made within 5 minutes, operation will resume in Deco with off gassing credit
given (Stop Time and TAT decrease).
DELAYED VIOLATION 1 (DV1)
Once above the Deco Stop Depth for more than 5 minutes, operation will enter DV1 which is a continuation of CV**.
Again, the Audible will sound and the LED will flash. And, the full TLBG will flash (Fig. 83) until the Audible is silenced.
> Down Arrow icon continues to flash until descent to below required Stop Depth (within Stop Zone), then full Stop icon
(Stop Bar with both Arrows) will be on solid.
• L (press) - to activate the Backlight
When descent below the required Deco Stop Depth is made, operation will resume in Deco with off gassing credit given (Stop
Time and TAT decrease).
**The difference between CV and DV1 is that DV1 causes operation to enter Violation Gauge Mode 5 minutes after surfacing
from that dive.
Fig.82 - CV MAIN
(after Audible)
Fig. 83 - DV1 MAIN
(during Audible)
CV & DV1 ALTs
are similar to Deco.
Fig. 79 - DECO STOP MAIN
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DELAYED VIOLATION 2 (DV2)
If the Deco obligation requires a Stop Depth between 60 FT (18 M) and 70 FT (21 M), operation will enter DV2 (Fig. 84).
The Audible will sound and the LED will flash. The full TLBG will flash until the Audible is silenced.
> Up Arrow icon flashes if 10 FT (3 M) deeper than the required Stop Depth.
> Once within 10 FT (3 M) of and below the required Stop Depth (Stop Zone), the full Stop icon (both Arrows with Stop Bar)
will be displayed solid.
• L (press) - to activate the Backlight.
DELAYED VIOLATION 3 (DV3)
Upon descent deeper than the MOD** (330 FT/100 M), the Audible will sound and the LED will flash. Also, the Up Arrow will
flash, and Current Depth and Max Depth will only indicate 3 dashes ( - - - ) signifying that you are Out of Range.
**MOD is the Max Operating Depth at which the OCS can accurately perform (NORM/FREE) nitrogen calculations.
Upon ascending above 330 FT (100 M), Current Depth will be restored, however, Max Depth (on ALT 1) will display 3 dashes
for the remainder of that dive. Also, the Log for that dive will display 3 dashes as the Max Depth.
DV3 MAIN, information includes (Fig. 85) -
> Up Arrow icon, flashing.
> Current Depth, 3 dashes ( - - - ) flashing, with FT (or M) icon.
> DTR as 3 dashes ( - : - - ) with graphic NDC.
> Graphics TOO DEEP and GAS1 (or 2 or 3), one in use.
> Nx icon, if any Gas is Nitrox.
> TLBG with NI icon.
> VARI while ascending.
• A (< 2 sec) - to access ALTs.
• S (< 2 sec) - to acknowledge alarms.
• S (2 sec) - to access Compass.
• L (press) - to activate Backlight.
DV3 Alt 1, information includes (Fig. 86) -
> Max Depth as 3 dashes ( - - - ) with FT (or M) and MAX icons.
> Elapsed Dive Time (hr:min) with graphic EDT.
> FO2 Set Point for Gas in use with graphic FO2.
> Current PO2 value (ATA) with graphic, if Nitrox.
> Nx icon, if Nitrox.
> O2BG with O2 icon, if Nitrox.
• A (< 2 sec) - to access ALT 2.
• Revert to Main in 5 sec, if A not pressed.
DV3 Alt 2, information includes (Fig.87) -
> Time of Day (hr:min sec), with A (or P) if 12 Hour.
> Temperature with ° icon and graphic F (or C).
• 5 sec or A (< 2 sec), revert to Main.
VIOLATION GAUGE MODE (VGM)
If a Deco Stop Depth greater than 70 FT (21 M) is required, operation will enter VGM. This would be preceded by DV2.
Operation would then continue in VGM during the remainder of that dive and for 24 hours after surfacing. VGM turns the OCS
into a digital instrument without any decompression or oxygen related calculations or displays. Gas Switching is terminated.
Upon activation of VGM, the Audible will sound and the LED will flash. The full TLBG and Up Arrow icon will flash.
VGM Main, information includes (Fig. 88/89) -
> Up Arrow icon, flashing until on surface.
> Current Depth with FT (or M) icon.
> Graphic VIOL (in place of NDC) flashing until on surface.
> TLBG, flashing during Audible then removed.
> VARI while ascending.
• A (< 2 sec) - to access ALTs.
• S (< 2 sec) - to acknowledge alarms.
• S (2 sec) - to access Compass.
• L (press) - to activate Backlight.
Fig. 85 - DV3 MAIN
Fig. 86 - DV3 ALT 1
Fig. 87 - DV3 ALT 2
Fig. 89 - VGM MAIN
(after Audible)
Fig. 88 - VGM MAIN
(during Audible)
Fig. 84 - DV2 MAIN
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VGM Alt 1, information includes (Fig. 90) -
> Max Depth with FT (or M) and MAX icons.
> Graphic EDT with Elapsed Dive Time (hr:min).
• A (< 2 sec) - to access ALT 2.
• Revert to Main in 5 sec, if A not pressed.
VGM Alt 2, information includes (Fig. 91) -
> Time of Day (hr:min sec), with A (or P) if 12 Hour.
> Temperature with ° icon and graphic F (or C).
• 5 sec or A (< 2 sec), revert to Main.
VGM ON SURFACE
The graphic VIOL flashes for the first 10 minutes, then it alternates with NORM (each On 3 seconds, Fig. 92A/B) until DC shut
down after 24 hours with no dives.
In the event that a dive is made during the 24 hour period, a full 24 hour surface interval must then be served before all func-
tions are restored.
During that 24 hours, VGM does not allow access to the Set F, Plan, Dsat, and FREE Mode features/screens. All Watch and
Compass functions will be allowed.
The Fly countdown timer provides the time remaining before normal operation can resume with full features and functions.
HIGH PO2
Warning >> at Alarm Set Point value minus .20 (1.00 to 1.40)
Alarm >> at Set Point value, except in Deco then at 1.60 only
When partial pressure of oxygen (PO2) increases to .20 less than the PO2 Alarm Set Point; the Audible sounds during which the
graphic message WARNING will be displayed, the Up Arrow icon will flash, and the PO2 value with graphic PO2 will flash (in
place of NDC) until the Audible is silenced (Fig. 93A).
> After the Audible - NDC is restored, the graphic WARNING and Up Arrow icon remain on solid until PO2 decreases below
.20 less than the Alarm Set Point then they are removed.
If PO2 continues to increase and reaches the PO2 Alarm Set Point, the Audible sounds again during which the graphic message
ALARM will be displayed.
> The PO2 value with graphic PO2 and Up Arrow icon will flash until PO2 decreases below the Alarm Set Point at which time
the Warning information previously described will be displayed.
PO2 Alarm Main, information includes (Fig. 93B) -
> Up Arrow icon, flashing until < Set Point, then solid.
> Current Depth with FT (or M) icon.
> PO2 value (ATA) with graphic PO2, flashing until < Set Point, then solid.
> Graphic message ALARM until < Set Point, then WARNING.
> Graphic GAS1 (or 2 or 3), one in use.
> Nx icon.
> TLBG with NI icon.
> VARI while ascending.
• A (< 2 sec) - to access ALTs.
• S (< 2 sec) - to acknowledge alarms.
• S (2 sec) - to access Compass.
• M (< 2 sec) - to access Gas Switching.
• L (press) - to activate Backlight.
PO2 Alarm Alt 1, information includes (Fig. 94) -
> Max Depth with FT (or M) and MAX icons.
> DTR (hr:min) with graphic NDC (or OTR if less), 0:00 if PO2 is 1.60.
> Elapsed Dive Time (hr:min) with graphic EDT.
> FO2 Set Point for Gas in use with graphic FO2.
> Current PO2 value (ATA) with graphic.
> Nx icon.
> O2BG with O2 icon.
• A (< 2 sec) - to access ALT 2.
• Revert to Main in 5 sec, if A not pressed.
Fig. 91 - VGM ALT 2
Fig. 90 - VGM ALT 1
Fig. 92B - VGM SURF MAIN
Fig. 92A - VGM SURF MAIN
Fig. 93A - PO2 WARNING
(during Audible)
Fig. 93B - PO2 ALARM MAIN
Fig. 94 - PO2 ALARM ALT 1
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PO2 Alarm Alt 2, information includes (Fig. 95) -
> Time of Day (hr:min sec), with A (or P) if 12 Hour.
> Temperature with ° icon and graphic F (or C).
• 5 sec or A (< 2 sec), revert to Main.
PO2 during Deco
When in Deco, PO2 will only alarm at 1.60. The PO2 alarm settings do not apply and there is no warning at lower values.
> If PO2 reaches 1.60 while at a Deco Stop, the audible will sound during which the PO2 value (1.60) with graphic PO2 will
flash in place of Stop Depth/Time, and the graphic message ALARM will be displayed in place of DECO STOP.
> When the audible is silent, PO2 information will alternate with Stop Depth/Time until PO2 decreases below 1.60 at which
time the PO2 information will be removed.
HIGH O2
Warning >> at 80% (240 OTU).
Alarm >> at 100% (300 OTU).
O2 Warning Main, information includes (Fig. 97) -
> Up Arrow icon, flashing until on surface.
> Current Depth with FT (or M) icon.
> Graphic O2, flashing in place of DTR until Audible is silenced, then DTR restored.
> Graphic WARNING, on solid while the Audible sounds.
> Graphic GAS1 (or 2 or 3), one in use.
> Nx icon.
> TLBG with NI icon, or O2BG with O2 icon if O2 time remaining is less.
> VARI while ascending.
• A (< 2 sec) - to access ALTs.
• S (< 2 sec) - to acknowledge alarms.
• S (2 sec) - to access Compass.
• M (< 2 sec) - to access Gas Switching.
• L (press) - to activate Backlight .
O2 Alarm Main, information includes (Fig. 98) -
> Up Arrow icon, flashing until on surface.
> Current Depth with FT (or M) icon.
> Graphic O2, flashing in place of DTR until on surface.
> Graphic ALARM, on solid until on surface .
> Graphic GAS1 (or 2 or 3), one in use.
> Nx icon.
> Full O2BG with O2 icon.
> VARI while ascending.
• A (< 2 sec) - to access ALTs.
• S (< 2 sec) - to acknowledge alarms.
• S (2 sec) - to access Compass.
• M (< 2 sec) - to access Gas Switching.
• L (press) - to activate Backlight.
O2 Alt 1, information includes (Fig. 99) -
> Max Depth with FT (or M) and MAX icons.
> Elapsed Dive Time (hr:min) with graphic EDT.
> FO2 Set Point for Gas in use with graphic FO2.
> Current PO2 value (ATA) with graphic.
> Nx icon.
> TLBG with NI icon.
• A (< 2 sec) to access ALT 2
• Revert to Main in 5 sec, if A not pressed
O2 Alt 2, information includes (Fig. 100) -
> Time of Day (hr:min sec) with A (or P) if 12 Hour.
> Temperature with ° icon and graphic F (or C).
• 5 sec or A (< 2 sec), revert to Main.
High O2 during Deco
If a High O2 Warning (80%) occurs while at a Deco Stop, the graphics O2 (flashing) and WARNING (solid) will be displayed in
place of Stop Depth/Time) until the Audible is silent, then Stop Depth/Time is restored.
If a High O2 Alarm (100%) strikes while at a Deco Stop, the graphics O2 (flashing) and ALARM (solid) will be displayed in place
of Stop Depth/Time until on the surface. The Up Arrow icon will be displayed (flashing) until on the surface.
Fig. 95 - PO2 ALARM ALT 2
Fig. 97 - HIGH O2 (80%)
WARNING (during Audible)
Fig. 98 - HIGH O2 (100%)
ALARM MAIN
Fig. 99 - O2 ALARM ALT 1
Fig. 100 - O2 ALARM ALT 2
Fig. 96 - HIGH PO2 (100%)
ALARM (during Deco)
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O2 Alarm on Surface
The graphics O2 and ALARM are displayed solid (in place of NORM) until O2 decreases below 100%, then the NORM Surface Main screen is restored.
If High O2 occurred during Deco, the graphic O2 flashes with the graphic ALARM and full O2BG solid for the first 5 minutes, then the O2BG is removed
and the graphics O2 and ALARM alternate with VIOL until O2 decreases below 100% or 10 minutes elapse, then the graphic O2 alternates with NORM
until 24 hours elapse with no dive.
> Operation enters VGM.
> In the event that a dive is made during the 24 hour period, a full 24 hour surface interval must then be served before all functions are restored.
> During that 24 hours, VGM does not allow access to the Set F, Plan, Desat, and FREE Mode features/screens. All Watch and Compass functions will
be allowed.
WARNINGS
Decompression diving, or diving deeper than 130 FT (39 M), will greatly increase your risk of decompression sickness.
Decompression diving is inherently hazardous and greatly increases your risk of decompression sickness, even when performed
according to the dive computer's calculations.
Using an OCS is no guarantee of avoiding decompression sickness.
The OCS enters Violation Mode when a situation exceeds its capacity to predict an ascent procedure. These dives represent
gross excursions into decompression that are beyond the boundaries and spirit of the OCS's design. If you are following these
dive profiles, Oceanic advises that you should not use an OCS.
If you exceed certain limits, the OCS will not be able to help you get safely back to the surface. These situations exceed tested
limits and can result in loss of some functions for 24 hours after the dive in which a violation occurred.
NORM DIVE MODE STRUCTURE


M
S
A
L
< 2 sec
closure
GAS
Switching
Backlight
2 sec
DS Preview
Safety Stop
Main
Deep Stop
Main
A
< 2 sec
ALTs
A
< 2 sec
ALTs
ALTs
at
5 FT (1.5 M)
for 5 sec
at
2 FT (0.6 M)
for 1 sec


< 2 sec
ack Alarms
2 sec
Compass
< 2 sec
Depth/Time set
or Run Timer
at 1/2 Max Depth
36
OCS OPERATING MANUAL
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GAS
SWITCHING
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OVERVIEW
> Can only switch when Dive Main screens are displayed.
> Cannot Switch Gas on surface.
> Cannot Switch Gas during alarms.
> All NORM dives begin with Gas 1.
> NORM mode defaults to Gas 1 after 10 minutes on the surface.
GAS Switch Menu, information includes (Fig. 101):
M (< 2 sec), while a NORM Dive Main is displayed - to access the Menu screen, if 2 or more gasses are set for use.
> Graphic SEL.
> Graphic selections GAS1, GAS2, GAS3 with FO2 settings.
The Arrow icon ( > ) next to the Gas currently in use at the time.
A (< 2 sec) - to step down (forward) through selections.
M (< 2 sec) - to step up (back) through selections.
S (< 2 sec) - to access selection (the Switch To screen) indicated by Arrow icon ( > ).
No access provided if OFF.
GAS Switch To, information includes (Fig. 102):
> Graphics SWCH TO - ** GAS1 (or 2, or 3).
> Graphic FO2 with Set Point.
> Graphic PO2 with value calculated for that Gas' FO2.
> Nx icon, if Nitrox.
• S (< 2 sec) - to Switch from the Gas in use to the Gas indicated, and revert to Main with the new Gas selected.
**Gas Switch Alarm
If a switch to the new Gas would result in PO2 => 1.60, the Audible will sound and a warning message will flash (Fig. 103)
until it is silenced, then the graphic SWCH TO - will be restored.
Due to the possibility that sufficient air may not be available in the Switch From tank, the switch will still be allowed.
If the switch is made, the PO2 alarm will strike. If in Deco, the Up Arrow icon will not flash (you control action to be taken).
Fig. 101 - GAS SWITCH
MENU
Fig. 102 - GAS SWITCH TO
Fig. 103 - GAS SWITCH
ALARM
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DIGITAL GAUG MODE STRUCTURE
SURFACE
closure





M
2 sec
S
2 sec
A
< 2 sec



S
< 2 sec
M
< 2 sec
A
< 2 sec
M or S
2 sec







M
< 2 sec



DIVE
at
5 FT (1.5 M)
for 5 sec
at
2 FT (0.6 M)
for 1 sec




S
< 2 sec


A
2 sec
L
closure




S
2 sec
A
< 2 sec


L
S 2 sec to revert
from Menu
to SURF Main.
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DIGITAL GAUGE
OP MODE
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GAUG SURF MAIN, information includes (Fig. 104):
> Graphic GAUG.
> Graphic SURF and SI (hr:min) with Time (clock) icon; if no dive yet, this is time since access to GAUG.
> Graphic DIVE and number of dives completed during that operating period, up to 24 (0 if no dive made yet).
> Battery icon, if voltage is low.
• A (< 2 sec) - to access ALT 1.
• M (< 2 sec) - to access GAUG Menu.
• M (2 sec) - to access Watch Mode .
• S (2 sec) - to access Compass**.
• L (press) - to activate Backlight.
** Compass can only be accessed from Main.
GAUG SURF ALT 1, information includes (Fig. 105):
> Max Depth, of dive previously made or of that repetitive group, with FT (or M) and MAX icons, dashes ( - - ) if no dive.
> Elapsed Dive Time (hr:min), of dive previously made or of that repetitive group, with graphic EDT, dashes ( - : - - ) if no dive.
> Graphic LAST DIVE, indicating that data is from the dive previously conducted while in GAUG mode.
• A (< 2 sec) - to access ALT 2.
• 10 sec, revert to Main if A is not pressed.
• L (press) - to activate Backlight.
GAUG SURF ALT 2, information includes (Fig. 106):
> 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).
• 5 sec or A (< 2 sec), revert to Main.
• L (press) - to activate Backlight.
GAUG MENU
• M (< 2 sec) - to access Menu, while viewing Surface Main.
• A (< 2 sec) - to step down (forward) through selections.
• M (< 2 sec) - to step up (back) through selections.
• S (< 2 sec) - to access selection indicated by Arrow icon ( > ).
• M (2 sec) any time while operating in the Menu system - to revert to Surface Main.
• S (2 sec) any time while viewing the Menu - to revert to Surface Main.
• 2 min no button action - will revert to Surface Main.
FLY TIME
Fly Time is a countdown timer that begins counting down 10 minutes after surfacing from a dive from 23:50 to 0:00 (hr:min).
The Fly countdown runs in the background while on the surface.
Information includes (Fig. 108):
> Time to Fly (hr:min) with graphic FLY.
> Time (clock) icon.
• 5 sec or S (< 2 sec), revert to Main.
• L (press) - to activate Backlight.
LOG, most SET A, and most SET U menu items are similar to those previously described for NORM. Refer to
to pages 19 to 23.
RUN TIMER
The GAUG Mode Set U Menu includes an item that allows a Run Timer to be added to the GAUG Dive Main screen.
Set Run Timer, information includes (Fig. 109):
> Graphic RUN TIMER.
> Set Point graphics ON and OFF; Arrow ( > ) icon next to the one previously saved flashing.
• A (< 2 sec) - to toggle Set Points.
• S (< 2 sec) - to save the setting and revert to the Set U Menu.
Fig. 104 - GAUG SURF MAIN
Fig. 106 - GAUG SURF ALT 2
Fig. 105 - GAUG SURF ALT 1
(Last dive's data)
Fig. 108 - GAUG FLY
(10 min after dive)



Fig. 109 - SET RUN TIMER







41
OCS OPERATING MANUAL
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Upon descent to 5 FT (1.5 M) for 5 seconds, operation will enter GAUG Dive Mode.
GAUG DIVE MAIN, information includes (Fig. 110) -
> Current Depth with FT (or M) icon.
> Run Time (hr:min:sec) with graphic TMR (= Timer), 0:00:00 until started, up to 9:59:59; blank if set OFF.
> Elapsed Dive Time (hr:min) with graphic EDT.
> Graphic GAUG (= Mode).
> VARI while ascending.
• S (2 sec) - to access Compass.
• S (< 2 sec) - to acknowledge Alarms.
• S (< 2 sec) - to start/stop Run Timer, if set ON; prevented if acknowledging Alarms.
• A (2 sec) - to reset Run Timer to 0:00:00, if set ON.
• A (< 2 sec) - to access ALT.
• L (press) - to activate Backlight.
GAUG DIVE ALT, information includes (Fig. 111) -
> Max Depth with FT (or M) and MAX icons.
> Time of Day (hr:min sec), with A (or P) if 12 Hour.
> Temperature with ° icon and graphic F (or C).
• 5 sec or A (< 2 sec), revert to Main.
DELAYED VIOLATION 3 (DV3)
Upon descent deeper than the MOD (660 FT/200 M), the Audible will sound and the LED will flash. Also, the Up Arrow will
flash, and Current Depth and Max Depth will only indicate 3 dashes ( - - - ) signifying that you are Out of Range.
Upon ascending above 660 FT (200 M), Current Depth will be restored, however, Max Depth (on ALT 1) will display 3 dashes
for the remainder of that dive. Also, the Log for that dive will display 3 dashes as the Max Depth.
When operating in Digital Gauge Mode, the Depth range is extended to 660 FT (200 M).
DV3 MAIN, information includes (Fig. 112) -
> Up Arrow icon, flashing.
> Current Depth, 3 dashes ( - - - ) flashing, with FT (or M) icon.
> Run Time (hr:min:sec) with graphic TMR, 0:00:00 until started, up to 9:59:59; blank if set OFF.
> Elapsed Dive Time (hr:min) with graphic EDT.
> Graphic TOO DEEP.
> Graphic GAUG (= Mode).
> VARI while ascending.
• S (2 sec) - to access Compass
• S (< 2 sec) - to acknowledge Alarms
• S (< 2 sec) - to start/stop Run Timer, if set ON; prevented if acknowledging Alarms
• A (2 sec) - to reset Run Timer, if set ON
• A (< 2 sec) - to access ALT
• L (press) - to activate Backlight
DV3 ALT, information includes (Fig. 113) -
> Max Depth, 3 dashes ( - - - ), with FT (or M) and MAX icons.
> Time of Day (hr:min sec), with A (or P) if 12 Hour.
> Temperature with ° icon and graphic F (or C).
• 5 sec or A (< 2 sec), revert to Main.
Fig. 110 - GAUG DIVE MAIN
(Run Timer set ON)
Fig. 111 - GAUG DIVE ALT
Fig. 113 - GAUG DV 3 ALT
Fig. 112 - GAUG DV 3 MAIN
(Run Timer set OFF)
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FREE DIVE
OP MODE
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FREE SURF MAIN, information includes (Fig. 124A/B):
> Graphic FREE.
> Surface Interval (min:sec up to 59:59, then hr:min) with graphic SURF and Time (clock) ico.n
> Number of dives completed during that set/series of repetitive dives with graphic DIVES, up to 99 (0 if no dive made yet).
> TLBG with NI icon if any nitrogen remaining after NORM or FREE dives in past 24 hours.
> Battery icon, if voltage is low.
• A (< 2 sec) - to access ALT 1 (ALT 2 if no dive yet).
• M (< 2 sec) - to access FREE Menu.
• M (2 sec) - to access Watch Mode.
• S (2 sec) - to access Compass**.
• L (press) to activate Backlight.
** Compass can only be accessed from Main.
FREE SURF ALT 1, information includes (Fig. 125):
> Max Depth with FT (or M) and MAX icons, 2 dashes ( - - ) if no previous dive
> Elapsed Dive Time (min:sec) with graphic EDT, 3 dashes ( - : - - ) if no previous dive
> Graphic LAST DIVE, indicating that data is from the dive previously conducted while in FREE mode
• A (< 2 sec) - to access ALT 2.
• 10 sec, revert to Main if A is not pressed.
• L (press) - to activate Backlight.
FREE SURF ALT 2, information includes (Fig. 126):
> 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).
• 5 sec or A (< 2 sec), revert to Main.
• L (press) - to activate Backlight.
Fig. 124B - FREE SURF
MAIN (34 min after dive 4)
Fig. 124A - FREE SURF
MAIN (no dive yet)
SURFACE
press





2 sec
2 sec
< 2 sec


S
< 2 sec
M
< 2 sec
A
< 2 sec






M
< 2 sec



DIVE
at
5 FT (1.5 M)
for 5 sec
at
2 FT (0.6 M)
for 1 sec





2 sec


press
< 2 sec
Fig. 126 - FREE SURF ALT 2
Fig. 125 - FREE SURF ALT 1
(Last dive's data)
FREE DIVE MODE STRUCTURE
M or S
2 sec
S 2 sec to revert
from Menu
to SURF Main.
< 2 sec


44
OCS OPERATING MANUAL
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FREE MENU
M (< 2 sec) - to access Menu, while viewing 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 selection indicated by Arrow icon ( > ).
M (2 sec), any time while in the Menu system - to revert to Surface Main.
S (2 sec), while viewing the Menu - to revert to Surface Main.
2 min (no button action) - will revert to Surface Main.
CDT (Countdown Timer) STATUS, information includes (Fig. 127A) -
> Graphics CD TMR solid with OFF (or ON) flashing.
> Countdown Time (hr:min). If OFF, 0:00 or the CDT time if previously set. If ON, the remaining time (min:sec).
• A (< 2 sec) - to step through selections OFF, ON, and SET.
• S (< 2 sec) - to save the selection that is flashing.
• S (2 sec) - to revert to FREE Menu.
>> If OFF is selected, operation reverts to the Menu.
>> If ON (start) is selected, operation reverts to the Menu with the time set starting to countdown.
>> If SET is selected (Fig. 127B), Set CDT is accessed.
Set CDT, information includes (Fig. 128):
> Graphics SEt and CD TMR.
> CDT (min:sec) with Minutes digits flashing.
> Time (clock) icon.
• A (hold) - to scroll upward through Minute Set Points at a rate of 8 per second from 0: to 59: in increments of 1: (min).
• A (< 2 sec) - to step upward through Set Points one at a time.
• M (< 2 sec) - to step back through Set Points one at a time.
• S (< 2 sec) - to save the Minute Set Point and flash the Seconds digits.
• A (hold) - to scroll upward through Seconds Set Points at a rate of 8 per second from :00 to :59 in increments of :01 (sec).
• A (< 2 sec) - to step upward through Set Points one at a time
• M (< 2 sec) - to step back through Set Points one at a time.
• S (< 2 sec) - to save the CDT Set Point and revert to the CDT Status screen with SET flashing (similar to Fig. 127B).
• S (2 sec) - to revert to FREE Menu.
The CDT will run in the background, while on the surface and during dives, until it counts down to 0:00, or it is turned OFF.
When a set Countdown Time reaches 0:00, the Audible Alarm will sound during which time the graphic CDT will be displayed
with 0:00 flashing on the Surface or Dive Main (Fig. 129).
EDT ALARM
Factory set for a fixed 30 seconds, the EDT (Elapsed Dive Time) alarm sounds the Audible every 30 seconds while underwater in
FREE Dive Mode.
Set EDT Alarm, information includes (Fig. 130):
> Graphic EDT.
> Graphic OFF (or ON) flashing.
• A (< 2 sec) - to toggle OFF/ON.
• S (< 2 sec) - to save Set Point and revert to FREE Menu.
• S (2 sec) - to revert to FREE Menu.
DD ALARMS
There are 3 Descending Depth (DD) alarms that can be set at progressively deeper depths. DD2 values deeper than DD1, DD3
values deeper than DD2.
Set DD1 Alarm, information includes (Fig. 131):
> Depth value with FT (or M) and MAX icons.
> Graphics DD1 AL.
> Graphic OFF (or ON) flashing.
• A (< 2 sec) - to toggle OFF/ON
• S (< 2 sec) - to save Set Point and flash Depth digits (if ON); or revert to FREE Menu (if OFF), bypassing DD2 and DD3.
• A (hold) - to scroll upward through Depth values at a rate of 8 per second from 30 to 330 FT (10 to 100 M) in increments of
10 FT (1 M)
• A (< 2 sec) - to step upward through Set Points one at a time.
• M (< 2 sec) - to step back through Set Points one at a time.
• S (< 2 sec) - to save the setting and revert to the FREE Menu.
• S (2 sec) - to revert to FREE Menu.
Fig. 127B - CDT STATUS
(to access Set, or set/ready)
Fig. 127A - CDT STATUS
(upon access)
Fig. 128 - SET CDT
(min:sec)
Fig. 129 - SURFACE MAIN
(during CDT alarm)
Fig. 130 - SET FREE EDT AL
Fig. 131 - SET FREE DD1 AL
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Set DD2 Alarm**, information includes (Fig. 132A):
> Depth value with FT (or M) and MAX icons.
> Graphics DD2 AL.
> Graphic OFF (or ON) flashing.
• A (< 2 sec) - to toggle OFF/ON
• S (< 2 sec) - to save Set Point and flash Depth digits (if ON); or revert to FREE Menu (if OFF), bypassing DD3
** If this screen is accessed when DD1 is set Off, a message (Fig. 132B) will be displayed for 5 seconds, then operation will
revert to the FREE Menu.
• A (hold) - to scroll up through Depth values at a rate of 8 per second, beginning 1 increment > DD1 Set Point (40 FT/11 M
min) to 330 FT (100 M) in increments of 10 FT (1 M).
• A (< 2 sec) - to step upward through Set Points one at a time.
• M (< 2 sec) - to step back through Set Points one at a time.
• S (< 2 sec) - to save the setting and revert to the FREE Menu.
• S (2 sec) - to revert to FREE Menu.
Set DD3 Alarm**, information includes (Fig. 133A):
> Depth value with MAX and FT (or M) icons.
> Graphics DD3 AL.
> Graphic OFF (or ON) flashing.
• A (< 2 sec) - to toggle OFF/ON.
• S (< 2 sec) - to save Set Point and flash Depth digits (if ON); or revert to FREE Menu (if OFF).
** If this screen is accessed when DD2 is set Off, a message (Fig. 133B) will be displayed for 5 seconds, then operation will
revert to the FREE Menu.
• A (hold) - to scroll up through Depth values at a rate of 8 per second, beginning 1 increment > DD2 Set Point (50 FT/12 M
min) to 330 FT (100 M) in increments of 10 FT (1 M).
• A (< 2 sec) - to step upward through Set Points one at a time.
• M (< 2 sec) - to step back through Set Points one at a time.
• S (< 2 sec) - to save the setting and revert to the FREE Menu.
• S (2 sec) - to revert to FREE Menu.
SELECT DIVE MODE
S (< 2 sec) - to access Set Dive Mode while the selection Arrow icon ( > ) is next to it on the FREE Menu
Set Dive Mode, information includes (Fig. 134):
> Graphic SEL.
> Set Point graphics NORM MODE, GAUG MODE, and FREE MODE; flashing when Arrow ( > ) icon is next to it.
• A (< 2 sec) - to step forward (down) through selections.
• M (< 2 sec) - to step back (up) through selections.
• S (< 2 sec) - to save the selection and access that mode's Surface Main screen
• S (2 sec) - to revert to FREE Menu.
To change items that FREE Mode shares with NORM Mode, access the NORM Menu, then Set U, then -
> Wet Activation.
> Units.
> Algorithm.
> Conservative Factor.
> Glo Duration.
Fig. 132A - SET DD2 AL
Fig. 132B - SET MESSAGE
Fig. 133A - SET DD3 AL
Fig. 133B - SET MESSAGE
Fig. 134 - SELECT DIVE
MODE
Upon descent to 5 FT (1.5 M) for 5 seconds, operation will enter FREE Dive Mode.
46
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Fig. 136 - FREE DIVE ALT 1
FREE DIVE MAIN, information includes (Fig. 135) -
> Current Depth with FT (or M) icon.
> No Deco Time Remaining (hr:min) with graphic NDC.
> Elapsed Dive Time (min:sec) with graphic EDT.
> TLBG with NI icon, if any from FREE or NORM dives within last 24 hours.
• S (2 sec) - to access Compass.
• A (< 2 sec) - to access ALT 1.
• L (press) - to activate Backlight.
FREE DIVE ALT 1, information includes (Fig. 136) -
> Graphics CD TMR (= Timer).
> Status OFF (or ON) flashing.
> Remaining CD Time (min:sec) with colon flashing if ON and a CD is in progress; 0:00 with colon flashing if the CD is
complete; or OFF with the CD previously set.
> Time (clock) icon.
• S (< 2 sec) - to toggle ON/OFF (start/stop Timer).
• A (< 2 sec) - to access ALT 2.
• Revert to Main in 10 sec, if A not pressed.
The CDT will run in the background until it counts down to 0:00, or it is turned OFF.
FREE DIVE ALT 2, information includes (Fig. 137) -
> Time of Day (hr:min sec), with A (or P) if 12 Hour.
> Temperature with ° icon and graphic F (or C).
• 5 sec or A (< 2 sec), revert to Main.
FREE DIVE ALARMS
FREE mode alarms, which are separate from NORM (or GAUG) alarms, sound 1 or 3 times as 3 short beeps then clear.
They cannot be acknowledged or silenced.
FREE CDT Alarm
When a set Countdown Time reaches 0:00, the Audible Alarm will sound during which time the graphic CDT will be displayed
with 0:00 flashing on the Main screen (Fig. 138). The digits will stop flashing after the Audible.
FREE EDT Alarm
When set ON, the EDT alarm activates every 30 seconds during a dive. The Audible will sound during which time the Time
digits will flash on the Main (Fig. 139).
FREE Depth Alarms
When set ON, the DD alarms (1, 2, 3) activate at their set Depths. The Audible will sound during which time the Depth digits
will flash on the Main (Fig. 140).
Fig. 135 - FREE DIVE MAIN
Fig. 137 - FREE DIVE ALT 2
Fig. 138 - DIVE CDT AL
Fig. 139 - EDT AL
Fig. 140 - DD AL
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OCS OPERATING MANUAL
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ADDITIONAL INFORMATION PERTAINING TO FREE DIVE MODE
Although breathing apparatus is not utilized for FREE Dive activities, nitrogen tissue loading remains a
factor. Nitrogen loading is calculated based upon a fixed FO2 of AIR.
Since a user has the option of alternating between NORM (SCUBA) and FREE Dive activities within a 24
hour period, nitrogen calculations and the displayed value of No Deco Dive Time Remaining (NDC Time)
are carried over from one operating mode to the other, which permits the user to maintain awareness of
nitrogen absorption and offgasing status.
The mathematical models currently used in the OCS are based on no decompression/decompression
multilevel repetitive dive schedules.
These algorithms do not take into account the physiological changes associated with the high pressures
that competitive type Free diving can expose a diver to.
Fig. 142A - FREE VIOLATION
(entry into Deco, during Aud)
Fig. 142B - FREE VIOLATION
(after Aud)
Fig. 143 - FREE VIOLATION
(6 sec on surface)
Fig. 141 - TLBG AL
High Nitrogen Alarms
When nitrogen increases to the caution level (4 segments), the Audible will sound during which time the TLBG and Up Arrow icon
will flash on the Main (Fig. 141).
The Up Arrow icon remains on the display until on the surface.
In the event that nitrogen continues to increase and reaches the Deco level (Fig. 142A); all 5 TLBG segments, the Up Arrow icon,
and the graphic VIOL, will flash while the Audible sounds. NDC will be displayed as 0:00.
When the Audible is silenced, the TLBG and NDC are removed (Fig. 142B). The Up Arrow icon flashes until on the surface and
the graphic VIOL flashes (Fig. 143) until 1 minute elapses on the surface.
After 1 minute on the surface, the graphic VIOL alternates with FREE and dive computer operation locks into FREE Mode for 24
hours. Access to Watch and Compass will be as usual.
WARNINGS
Ensure that you know which Operating Mode is selected (NORM, GAUG, or FREE) prior to commencing any
dive.
Conducting Free dives within a 24 hour period after conducting SCUBA dives, combined with the effects of
multiple rapid Free Dive ascents, increases your risk of decompression sickness. Such activities may result in
accelerated entry into decompression which could cause serious injury or death.
Combining competitive type Free dive activities that involve multiple descents/ascents with activities utilizing
SCUBA during the same 24 hour period is not recommended. Presently, there is no data relating to such
activities.
It is highly recommended that anyone planning to become involved in competitive type Free dive activities
obtain proper instruction and training from a recognized Free Diving trainer. It is imperative that the
physiological affects be understood and the diver is physically prepared.
48
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COMPASS
MODE
49
OCS OPERATING MANUAL
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COMPASS ICONS
North OP
Mode
Reference
OP Mode
Turn Left
Turn Right
Divers
Direction of
Travel
Tilt
Heading
Degrees
dynamic North or
Ref Heading set
or
COMPASS MODE SURFACE
Backlight
(Smartglo)





A
< 2 sec
Surface
Main
S
< 2 sec
M
< 2 sec
A
< 2 sec
M
2 sec




M
< 2 sec
S
2 sec
2 min
Face Down
Until Beep
Progress
(form circle)
after
complete
S
< 2 sec
save, display
as OP Main
S
< 2 sec
Set Ref
Heading
save,
back to
OP Main
rotate (level)




S
< 2 sec
S
< 2 sec
save, back to
Compass Menu
S
< 2 sec

0 to + 45°
S
< 2 sec
Battery
Change
DATA
A < 2 sec
to toggle
S
< 2 sec
DATA SAVED*
CAL COMPASS
after
beep
turn unit
upside down
15 sec
allowed
S
< 2 sec
S
< 2 sec

save,
back to
Set Menu
0 to - 45°
S
< 2 sec
SAVE
CLEAR
>
*or CLEARED
3 sec
Rotate
360°
CAL
READY*
3 sec
revert to
Comp OP Main
(back to Face Down,
if Failed)
*or FAILED
S
< 2 sec
save, display
as OP Main



A
< 2 sec
back to
OP Main
S
< 2 sec
Reverse
Heading
S
< 2 sec
S
< 2 sec
Lock
Bearing
Conrm
Reverse
S
< 2 sec
display OP Main
with new Heading
ashing
Face Up
Until Beep
turn unit
right side up
after
beep
ready to start
3 sec
keep level
as rotate
save,
back to
Set Menu
50
OCS OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5272-r01 (9/28/11)
OVERVIEW
> S (2 sec) - to access Compass OP Main from Watch, Surface, or Dive Main.
> S (2 sec) or no button action (2 min*) - to revert to Watch, Surface, or Dive Main.
*During the final 15 seconds, the remaining On time is displayed. If a button is pressed during that time, the 2 minute On time will reset
allowing operation to remain in Compass Mode.
> Compass OP Mode selected (North, Reference) - remains until changed.
> Reference OP Mode - can set a course, then also select a Reverse course while on the surface and during dives.
> Numeric values are displayed as 3 digits (000 to 360°), have a resolution of 001°, and an accuracy of +/- 005°.
> Operation will be normal and display of values will be within specified tolerances up to 90° tilt at which time the Heading
(diver's direction) digits are removed until the tilt angle is within tolerance.
Upon accessing the Compass, the OP (operating) Main of the last mode selected will be displayed >> North (Fig. 144), Refer-
ence (Fig. 145), or Reverse Reference (Fig. 146).
While on the surface, press M (< 2 sec) to access the Compass Menu to change the OP Mode, Calibrate, or set Declination.
COMPASS MENU, information includes (Fig. 147) -
> Graphics SEL (select) and MENU, with selections ->
> NORTH MODE - select as OP Mode with no set heading.
> REF MODE - select as OP Mode with set heading allowed.
> CALIBRATE - access to initiate Calibration.
> SET DECLIN - access to set Declination.
> Compass On time remaining, counting down from 15 to 0 (sec), blank when > 15 seconds.
A (< 2 sec) - to step forward (down) through selections.
M (< 2 sec) - to step back (up) through selections
S (< 2 sec) - to select or access item indicated by ( > ) icon.
If NORTH or REF MODE is selected, that mode will be saved and its OP Main will be displayed.
M or S (2 sec) any time, except while in Calibration - to revert to Compass OP Main.
No button action (2 min) - revert to Watch, Surface, or Dive Main.
NORTH OP MAIN, information includes (Fig. 148) -
> Current Depth with FT (or M) icon, during dive mode, 00 during first 10 min on surface, blank on surface > 10 min.
> North Mode icon (letter N in box).
> Static Arrow icon (at 12 o'clock), diver direction of travel.
> Dynamic Arrow, relative direction of magnetic North.
> Tilt icon*, when the Compass is at an angle => 20° off level.
> Numeric heading (diver's current direction), 001 to 360°, with position graphic (N, E, SE, etc.). *
Blank when the Tilt icon
is displayed
.
> On time remaining, counting down, if 15 to 0 (sec).
S (2 sec) or no button action during 2 min - to revert to Watch, Surface, or Dive Main.
L (press) - to activate Backlight.
M (< 2 sec) - to access Compass Menu, surface only.
REFERENCE OP MAIN, information includes (Fig. 149) -
> Current Depth with FT (or M) icon, during dive mode, 00 during first 10 min on surface, blank on surface > 10 min.
> Reference Mode icon (2 bars with arrow, Fig. 149a) with numeric Reference heading (course) set above it.
> Static Arrow icon (at 12 o'clock), diver direction of travel.
> Turn Arrow icon (left or right) flashing during any time the diver deviates => 10° off the heading set.
> Dynamic Arrow, tracking Reference direction set.
> Tilt icon*, when the Compass is at an angle => 20° off level.
> Numeric heading (diver's current direction), 001 to 360°, with position graphic (N, E, SE, etc.). *
Blank when the Tilt icon is
displayed.
> On time remaining, counting down, if 15 to 0 (sec).
S (2 sec) or no button action during 2 min - revert to Watch, Surface, or Dive Main.
L (press) - to activate Backlight.
M (< 2 sec) - to access Compass Menu, surface only.
A (< 2 sec) - to access Reference Menu, surface or dive.
REFERENCE MENU, information includes (Fig. 150) -
> Graphic SEt, with selections ->
> REF HEADING -
To access REF OP Main with the Heading flashing allowing it to be set.
> REVERSE HEADING -
To select it as the OP Mode with new Heading (180° opposite of Reference Heading set).
> On time remaining, counting down, if 15 to 0 (sec).
A (< 2 sec) - to toggle selection.
S (< 2 sec) - to save the selection and revert to OP Main.
Fig. 144 - NORTH OP MODE
Fig. 146 - REVERSE REF
Fig. 145 - REF OP MODE
Fig. 148 - NORTH OP MAIN
(at 280°)
Fig. 147 - COMPASS MENU
Fig. 149 - REF OP MAIN
(at 060°, turn left to 040°)
a
Fig. 150 - REF MENU
actual
heading
actual
heading
course
set
180°
opposite
set
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Set Reference Heading, information includes (Fig. 151) -
> Current Depth with FT (or M) icon, blank on surface.
> Reference Mode icon (2 bars with arrow) with graphic SET (flashing) above it.
> Static Arrow icon (at 12 o'clock), diver direction of travel.
> Dynamic Arrow, tracking Reference direction currently set.
> Numeric heading (diver's direction) at lower/right, with position graphic.
> On time remaining, counting down, if 15 to 0 (sec).
S (< 2 sec) - to flash Heading value (lower/right), with SET solid.
Rotate the Compass (keeping level) in either direction to new Heading, at lower/right.
S (< 2 sec) - to lock in new Heading, replacing SET.
Reverse Ref Heading, information includes (Fig. 152) -
> Current Depth with FT (or M) icon, blank on surface.
> Reverse Mode icon (2 bars with arrow) with reverse Heading (180° opposite of Reference Heading set) above it, flashing.
> Static Arrow icon (at 12 o'clock), diver direction of travel.
> Dynamic Arrow, tracking Reference direction currently set.
> Numeric heading (diver's direction) at lower/right, with position graphic.
> On time remaining, counting down, if 15 to 0 (sec).
S (< 2 sec) - to reverse Heading.
The value above the Reverse Mode icon (new course) will stop flashing indicating the Heading has been reversed.
The value at the lower/right will then indicate actual current direction.
CALIBRATION (surface only)
Local magnetic fields can effect display of actual location when reading a digital compass. It may be advantageous to Cali-
brate the Compass before its first use after purchase, use in new regions, or if inaccuracies are experienced. Calibration will be
required when the battery is changed.
CAL Access/Start**, information includes (Fig. 153) -
> Graphics CAL and ROTATE.
> 360 with ° icon.
• S (< 2 sec) - to activate (start) Calibration.
• Slowly and steadily rotate the unit 360° in either direction while maintaining it in a flat level position (keeping it level is
critical for acurracy), CAL progress will be displayed.
** The CAL ROTATE screen will also be accessed after the Battery is changed and Data is either saved or cleared.
CAL Progress**, information includes (Fig. 154) -
> Graphic CAL.
> dotted circle, increasing from 0 to 360° as it is rotated.
**Rotation should take about 30 seconds. If not fully rotated in 60 seconds, operation will revert to the Menu.
CAL Complete, information includes (Fig. 155, 156) -
> Graphic CAL.
> Graphic READY or AGAIN, flashing for 3 seconds.
* READY, means it passed, in which case Calibration is complete and operation reverts to the OP Main.
* AGAIN, means it failed**, in which case the CAL ROTATE screen will be displayed. Press S (< 2 sec) to repeat Calibration.
**If Calibration fails after 3 attempts, operation will revert to the Watch or Surface Main from which it was accessed. If you
then continue operation, the previous successful Calibration will remain in effect.
DECLINATION
Magnetic Declination is taken from numbers provided on maps or charts that apply to a specific location. The numbers represent
the easterly or westerly angular difference (Declination) in degrees between magnetic North and true (geometric or polar) North.
A Compass will point to magnetic North unless its reference is adjusted to true North prior to conducting activities.
Declination Menu, information includes (Fig. 157) -
> Graphic SEt, with selections -
> DECLIN OFF.
> DECLIN EAST.
> DECLIN WEST.
A (< 2 sec) - to step forward (down) through Menu selections.
M (< 2 sec) - to step back (up) through Menu selections.
S (< 2 sec), when the pointer icon ( > ) is next a selection - to select it.
Fig. 151 - SET REFERENCE
HEADING
(rotate to desired Heading)
Fig. 152 - REVERSE REF
HEADING
(reverse from 330°, to 150°)
Fig. 153 - START CAL
Fig. 154 - PROGRESS
(turn until full circle)
Fig. 155 - TO START CAL
Fig. 156 - CAL PASSED
Fig. 157 - DECLIN MENU
52
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> If OFF is selected, Declination is set for 0° and operation reverts to the Compass Menu.
> If DECLIN EAST (or WEST) is selected, the Set Declination screen is accessed with the setting flashing (Fig. 158).
A (hold) - to scroll upward through Set Points at a rate of 4 per second from 0 to 45° in increments of 1°.
A (< 2 sec) - to increase Set Points one at a time.
M (< 2 sec) - to step back through Set Points one at a time.
S (< 2 sec) - to save the Set Point and revert to the Set Declination Menu.
ALARMS
When most Alarms strike, operation in Compass Mode will be terminated and the Dive Main will be displayed indicating the
alarm condition. Compass Mode can then be reentered by pressing S (2 sec).
During several types of alarms, indication will be given while remaining in Compass Mode without interuption. They are -
Ascent Alarm (Fig. 159) -
> VARI, all segments flashing until slowed.
Depth Alarm (Fig. 160) -
> Depth digits flash until shallower than the alarm depth set.
WARNING: You must become thoroughly familiar with setup and operation of the OCS Digital
Compass before using it as your primary device for navigation. Failure to do so could result in
serious errors relating to activities involving navigation.
> Practice on land before use in water.
> Practice on the surface before use underwater.
Fig. 158 - SET DECLINATION
Fig. 159 - ASCENT ALARM
Fig. 160 - DEPTH ALARM
53
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REFERENCE
CAUTION: When the procedure provided in this section is used
to change the Battery, you must be sure that the case o-ring is
not pinched and that the OCS is water tight before conducting
diving activities. Pre dive pressure testing by an Authorized
Oceanic facility is highly recommended.
54
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PC INTERFACE
The Settings Upload portion of the Oceanlog PC Interface (PCI) program can be used to set/change the Main Time, Date, Set A
group (Alarms), and Set U group (Utilities) using the Interface System. The Set F group (FO2) and FREE Mode Alarms must be
entered using the OCS's button controls.
Information available for retrieval (download) from the OCS to the PC program includes dive number, SI, max depth, EDT, start
date/time, lowest temperature, sampling rate, dive profile, Set Points, TLBG, O2BG, and Gas Switching events.
Prior to attempting to download data from your OCS or upload settings to it, review the Help section of the PCI program. Recom-
mended is to print those sections of Help that you consider appropriate for your Interface activities.
A USB Driver is provided on the Oceanlog CD as part of the Interface System.
The OCS is configured with a Data Port located on the side (Fig. 161a) that enables it to be connected to a PC USB port using
the special Interface Cable.
To connect the PCI Cable to the OCS:
> position the connector with the red dot at 12 o'clock.
> align the pins of the cable connector with the holes in the data port and press the connector into the port (Fig. 162).
> turn the connector clockwise until the red dot is at 1 o'clock and it locks in (Fig. 163), then release it.
The OCS checks for a connection to the Data Port once every second while the Watch Default Time is displayed. Checks are not
made if the Wet Activation contacts are wet.
When the PCI cable is plugged in, the graphic PC COMM is displayed with a 2 minute countdown timer that runs until the con-
nection is confirmed, then the graphics PC COMM CONNECTED are displayed until completion of the upload or download
operation.
PC Requirements:
• IBM
®
, or compatible, Personal Computer with USB Port
• Intel
®
Pentium 200 MHz or better microprocessor
• Microsoft
®
Windows
®
XP, Vista, or 7.
• Super VGA card or compatible video graphics adaptor (256 color or greater) with a minimum 800 X 600 pixel screen area
of display settings
• 16MB of available RAM
• 20MB of available hard drive storage
• Mouse
• CD Rom drive
• Printer
For software updates, refer to the Oceanic web site at -
www.OceanicWorldwide.com
For support, call OceanLog Support toll free at -
(866) 732-7877, 8 Am to 5 Pm USA Pacific time.
CLEAR (RESET)
The OCS is configured with a feature that allows nitrogen and oxygen calculations to be cleared.
This is intended for facili-
ties using the OCS for rental or training activities, not for general use by individual divers.
WARNING: Reset after a dive and subsequent use for a repetitive dive conducted by the same diver
could result in serious injury or death.
Upon accessing the Clear screen, information displayed includes >> the graphics CLr CAUTION DELETES NI-O2 with an arbi-
trary invalid code number entered by the factory, all solid. Proceed as follows, or press S (2 sec) return to the SN screen
Reset procedure:
• S (2 sec), at any time, to cancel the procedure and revert to the SN screen.
• S (< 2 sec) to start the first 2 digits (left) flashing.
• A (hold) to scroll upward through the first digits (left) at a rate of 8 per second.
• A (< 2 sec) to step upward through the digits (left) one at a time.
• M (< 2 sec) to step back through the digits (left) one at a time.
• S (< 2 sec) to save the first 2 digits (left) and start the second 2 digits (right) flashing.
• A (hold) to scroll upward through the second digits (right) at a rate of 8 per second.
• A (< 2 sec) to step upward through the digits (right) one at a time.
• M (< 2 sec) to step back through the digits (right) one at a time.
• S (< 2 sec) to save the reset code, clear the NI-O2 calculations, and revert to Watch mode.
Fig. 161 - PC DATA PORT
a
Fig. 163 - PCI CABLE
(turned, dot at 1 o'clock)
Fig. 162 - PCI CABLE
(insert with dot at 12 o'clock)
dot
TIMER
(counting down)
PCI CABLE
(connection sensed)
CLEAR (Reset)
Code #
dot
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CARE AND CLEANING
Protect your OCS from shock, excessive temperatures, exposure to chemicals, and tampering. Protect the lens against scratches
with a Instrument Lens Protector. Small scratches will naturally disappear underwater.
• Soak and rinse the OCS in fresh water at the end of each day of diving, and check to ensure that the areas around the Low
Pressure (Depth) Sensor (Fig. 164a), PC Interface Data Port (Fig. 164b), and Buttons are free of debris or obstructions.
• To dissolve salt crystals, use lukewarm water or a slightly acidic bath (50% white vinegar/50% fresh water). After removal
from the bath, place the OCS under gently running fresh water and towel dry before storing.
• Transport your OCS cool, dry, and protected.
INSPECTIONS AND SERVICE
Your OCS should be inspected annually by an Authorized Oceanic Dealer who will perform a factory prescribed function check
and inspection for damage or wear. To keep the 2 year limited warranty in effect, this inspection must be completed one year
after purchase (+/- 30 days).
Oceanic recommends that you continue to have an inspection performed every year to ensure it is working properly. The costs of
annual inspections, or inspections relating to water tight integrity, are not covered under the terms of the 2 year limited warranty.
To Obtain Service:
Take your OCS to an Authorized Oceanic Dealer or send it to the nearest Oceanic Regional Facility.
To return your OCS to Oceanic:
• Record all dive data in the Log and/or download the data stored in memory. All data will be erased during factory service.
• Package it using a protective cushioning material.
• Include a legible note stating the specific reason for return, your name, address, daytime phone number, serial number(s),
and a copy of your original sales receipt and Warranty Registration Card.
• Send freight prepaid and insured using a traceable method to the nearest Oceanic Regional Facility, or to Oceanic USA.
• If shipping to Oceanic USA, obtain an RA (Return Authorization) number by contacting Oceanic at 510/562-0500 or send
an e-mail to service@oceanicusa.com.
• Non-warranty service must be prepaid. COD is not accepted.
• Additional information is available at the Oceanic web site OceanicWorldwide.com
BATTERY REPLACEMENT
CAUTION: The procedures that follow must be closely adhered to avoid entrance of water into the
unit. Damage due to improper Battery replacement (or subsequent leakage of moisture into the unit)
is not covered by the OCS's 2 year warranty.
NOTE: The OCS can be sent to Oceanic Worldwide, Regional Distributor, or Authorized Dealer Service
for proper battery change service which includes pressure (depth) and leak testing to the max operat-
ing depth. Standard charges for service will apply
The Battery Compartment should only be opened in a dry and clean environment with extreme care taken to prevent the entrance
of moisture or dust.
As an additional precautionary measure to prevent formation of moisture in the Battery Compartment, it is recommended that the
Battery be changed in an environment equivalent to the local outdoor temperature and humidity (e.g., do not change the Battery
in an air conditioned environment then take it outside during a hot sunny day).
Inspect the Buttons, Lens, and Housing to ensure they are not cracked or damaged. If there is any sign of moisture in the OCS,
DO NOT attempt to use it for diving (NORM, GAUG, or FREE) until it receives proper service by the Oceanic factory or an
Authorized Regional Distributor.
Data Retention
When the battery is removed, settings and nitrogen/oxygen calculations for repetitive dives will be retained in volatile memory
until a new battery is installed. You will have the choice of saving or deleting the data. The Compass will need to be calibrated
after the new battery is installed.
All parts needed for the battery change that follows are provided in the OCS Battery Kit available from your Oceanic Dealer.
Battery Removal
• There is no need to remove the straps.
• Remove the (4) retaining screws located on the back of the case (Fig. 165) by turning them counter clockwise with a small
flat tip 3mm screw driver.
• Carefully separate the front and back sections. If necessary, insert a small flat tip screw driver in the slot machined into the
Cover at the 11 o'clock position (Fig. 166A) and gently pry the Battery Cover loose, then lift it off the case (Fig. 166B).
• Turn the case to one side to drop the Battery into your hand. If necessary, gently loosen it with the tip of your finger (Fig.
167). DO NOT use tools to pry it out, or short the positive (+) top of the Battery to the negative ( - ) contact under it.
• Discard the Battery according to local regulations governing disposal of Lithium batteries.
Fig. 164 - FRONT
b
a
Fig. 165 - CASE BACK
Fig. 166B - LIFTING
BATTERY COVER OFF
Fig. 167 - BATTERY
REMOVAL
Fig. 166A - TO LOOSEN
BATTERY COVER
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Inspection
• Closely check all of the sealing surfaces for any signs of damage that might impair proper sealing.
• Inspect the buttons, lens, and housing to ensure they are not cracked or damaged.
WARNING: If damage or corrosion is found, return your OCS to an Authorized Oceanic Dealer, and
DO NOT attempt to use it until it has received factory prescribed service.
• Remove the cover O-ring by squeezing the sides (Fig. 168a). Discard, and do not attempt to reuse it.
> It is located around the top rim of the cover.
> DO NOT use tools to remove the O-ring.
> To ensure proper sealing, O-ring replacement is required each time the Battery is replaced.
Battery Installation
• Very lightly lubricate the new O-ring with silicone grease and place it on the top rim of the cover.
• Place a new 3 volt type CR2450 Lithium Battery, negative side down into the Battery cavity and ensure that it is evenly
positioned (Fig. 169).
• Carefully position the Battery Cover over the battery compartment. Use the OCS logo as a guide for top/bottom. Also,
small symbols have been engraved on the top of the Cover and strap to serve as a guide for proper alignment (Fig. 170a).
• While ensuring that the cover and back of the case are properly aligned, firmly press them evenly and completely together.
• While holding the Battery Cover firmly in position agaonst the back of the case (Fig. 171), insert the (4) retaining screws
and tighten them until secure by turning them clockwise with a small flat tip 3mm screw driver. DO NOT over tighten.
Testing
> Activate the unit and ensure that the LCD is clear and sharp in contrast. If any portions are missing or appear dim, or if a
Low Battery condition is indicated, return the OCS to an Authorized Oceanic Dealer for evaluation before use.
> During 24 hours after completion of a dive, the graphic DATA with selections SAVE ? and CLEAR ? will be displayed (Fig.
172) giving you the option to retain or delete Ni-O2 calculations for repetitive dives.
• A (< 2 sec) to toggle between SAVE and CLEAR
• S (< 2 sec) to save the selection
> Graphics DATA SAVED (or CLEARED) with CAL COMPASS appear for 3 seconds (Fig. 173), then operation reverts to the
Compass CAL screen.
> Calibrate the Compass.
> Verify all Set Points prior to diving.
Fig. 168 - SQUEEZING
COVER O-RING
Fig. 169 - INSTALLING
BATTERY
a
Fig. 170 - BATTERY COVER
ALIGNMENT
Fig. 171 - PRESSING
FRONT & BACK TOGETHER
Fig. 172 - SELECT
Fig. 173 - DATA SAVED
ALTITUDE SENSING AND ADJUSTMENT
Prior to the first dive of a series of repetitive dives, Altitude (i.e., ambient pressure) is measured upon activation of Dive Surface
Mode and every 15 minutes until a dive is made or operation reverts to Watch Mode.
> While it is operating in Watch modes after a dive, measurements are taken every 15 minutes during the 24 hour period
after surfacing.
> Measurements are only taken when the unit is dry.
> Two readings are taken, the second reading 5 seconds after the first. The readings must be within 1 foot (30 cm) of each
other to record that ambient pressure as the current Altitude.
> No adjustments are made during any time that the Wet Contacts are bridged.
When diving in high altitude waters from 3,001 to 14,000 feet (916 to 4,270 meters), the OCS automatically adjusts to these
conditions providing corrected Depth, and reduced No Deco and O2 Times at intervals of 1,000 feet (305 meters).
At an elevation of 3,001 feet (916 meters), Depth calibration automatically changes from feet of seawater to feet of fresh water.
This is the first adjustment to the algorithm.
When the Conservative Factor feature is set On, NDLs are calculated based upon the next higher 3,000 foot (915 meter) Alti-
tude. All adjustments for Altitudes greater than 11,000 feet (3,355 meters) are then made to allowable dive times for 14,000
feet (4,270 meters). At Sea Level, calculations are based upon an Altitude of 6,000 feet.
The OCS will not function as a Dive Computer above 14,000 feet (4,270 meters).
a
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TECHNICAL DATA
58
OCS OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5272-r01 (9/28/11)
PZ+ ALGORITHM >> NDLS (HR:MIN) AT ALTITUDE (IMPERIAL)
Altitude 0 3001 4001 5001 6001 7001 8001 9001 10001 11001 12001 13001
(feet) to to to to to to to to to to to to
3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000 14000
Depth
( FT )
30 3:17 2:30 2:21 2:14 2:08 2:02 1:57 1:52 1:47 1:39 1:34 1:29
40 1:49 1:21 1:15 1:11 1:08 1:05 1:02 1:00 0:57 0:55 0:53 0:51
50 1:05 0:53 0:51 0:49 0:47 0:44 0:42 0:39 0:37 0:35 0:34 0:33
60 0:48 0:37 0:35 0:33 0:32 0:30 0:28 0:26 0:24 0:23 0:22 0:21
70 0:35 0:26 0:24 0:23 0:21 0:20 0:19 0:18 0:17 0:16 0:16 0:14
80 0:26 0:19 0:18 0:17 0:16 0:15 0:14 0:13 0:12 0:11 0:11 0:10
90 0:19 0:15 0:14 0:13 0:12 0:11 0:10 0:10 0:09 0:09 0:08 0:08
100 0:16 0:11 0:10 0:10 0:09 0:09 0:08 0:08 0:07 0:07 0:07 0:07
110 0:12 0:09 0:08 0:08 0:08 0:07 0:07 0:07 0:06 0:06 0:06 0:05
120 0:10 0:08 0:07 0:07 0:07 0:06 0:06 0:06 0:05 0:05 0:05 0:05
130 0:08 0:07 0:06 0:06 0:06 0:05 0:05 0:05 0:05 0:05 0:04 0:04
140 0:07 0:06 0:05 0:05 0:05 0:05 0:05 0:04 0:04 0:04 0:04 0:04
150 0:06 0:05 0:05 0:05 0:05 0:04 0:04 0:04 0:04 0:04 0:04 0:03
160 0:06 0:05 0:05 0:04 0:04 0:04 0:04 0:04 0:04 0:03 0:03 0:03
170 0:05 0:04 0:04 0:04 0:04 0:04 0:03 0:03 0:03 0:03 0:03 0:03
180 0:05 0:04 0:04 0:04 0:03 0:03 0:03 0:03 0:03 0:03 0:03 0:03
190 0:04 0:04 0:04 0:03 0:03 0:03 0:03 0:03 0:03 0:03 0:03 0:00
PZ+ ALGORITHM >> NDLS (HR:MIN) AT ALTITUDE (METRIC)
Altitude 0 916 1221 1526 1831 2136 2441 2746 3051 3356 3661 3966
(meters) to to to to to to to to to to to to
915 1220 1525 1830 2135 2440 2745 3050 3355 3660 3965 4270
Depth
( M )
9 3:37 2:41 2:31 2:23 2:16 2:10 2:04 1:59 1:54 1:50 1:43 1:37
12 1:55 1:27 1:21 1:15 1:12 1:08 1:05 1:03 1:00 0:58 0:55 0:54
15 1:08 0:55 0:53 0:51 0:49 0:47 0:44 0:42 0:39 0:37 0:36 0:34
18 0:50 0:39 0:37 0:35 0:33 0:32 0:30 0:28 0:26 0:24 0:23 0:22
21 0:36 0:28 0:26 0:24 0:23 0:21 0:20 0:19 0:18 0:17 0:16 0:16
24 0:27 0:20 0:19 0:18 0:17 0:16 0:15 0:14 0:13 0:12 0:11 0:11
27 0:20 0:16 0:15 0:13 0:12 0:11 0:11 0:10 0:09 0:09 0:09 0:08
30 0:16 0:12 0:11 0:10 0:09 0:09 0:09 0:08 0:08 0:07 0:07 0:07
33 0:13 0:09 0:09 0:08 0:08 0:07 0:07 0:07 0:07 0:06 0:06 0:06
36 0:10 0:08 0:07 0:07 0:07 0:06 0:06 0:06 0:05 0:05 0:05 0:05
39 0:09 0:07 0:06 0:06 0:06 0:06 0:05 0:05 0:05 0:05 0:05 0:04
42 0:08 0:06 0:06 0:05 0:05 0:05 0:05 0:05 0:04 0:04 0:04 0:04
45 0:06 0:05 0:05 0:05 0:05 0:04 0:04 0:04 0:04 0:04 0:04 0:04
48 0:06 0:05 0:05 0:04 0:04 0:04 0:04 0:04 0:04 0:03 0:03 0:03
51 0:05 0:04 0:04 0:04 0:04 0:04 0:04 0:03 0:03 0:03 0:03 0:03
54 0:05 0:04 0:04 0:04 0:04 0:03 0:03 0:03 0:03 0:03 0:03 0:03
57 0:05 0:04 0:04 0:03 0:03 0:03 0:03 0:03 0:03 0:03 0:03 0:03
DSAT ALGORITHM >> NDLS (HR:MIN) AT ALTITUDE (IMPERIAL)
Altitude 0 3001 4001 5001 6001 7001 8001 9001 10001 11001 12001 13001
(feet) to to to to to to to to to to to to
3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000 14000
Depth
( FT )
30 4:20 3:21 3:07 2:55 2:45 2:36 2:28 2:21 2:15 2:10 2:04 1:58
40 2:17 1:43 1:36 1:30 1:25 1:20 1:16 1:12 1:09 1:06 1:03 1:01
50 1:21 1:03 1:00 0:58 0:55 0:52 0:48 0:45 0:43 0:41 0:39 0:37
60 0:57 0:43 0:40 0:38 0:36 0:34 0:33 0:31 0:30 0:29 0:28 0:27
70 0:40 0:31 0:30 0:28 0:27 0:26 0:24 0:23 0:22 0:20 0:19 0:18
80 0:30 0:24 0:23 0:21 0:20 0:19 0:18 0:17 0:16 0:16 0:14 0:13
90 0:24 0:19 0:18 0:17 0:16 0:15 0:14 0:13 0:12 0:11 0:10 0:10
100 0:19 0:15 0:14 0:13 0:12 0:11 0:10 0:10 0:09 0:09 0:08 0:08
110 0:16 0:12 0:11 0:10 0:09 0:09 0:08 0:08 0:08 0:07 0:07 0:07
120 0:13 0:09 0:09 0:08 0:08 0:08 0:07 0:07 0:07 0:06 0:06 0:06
130 0:11 0:08 0:08 0:07 0:07 0:07 0:06 0:06 0:06 0:06 0:05 0:05
140 0:09 0:07 0:07 0:06 0:06 0:06 0:06 0:05 0:05 0:05 0:05 0:05
150 0:08 0:06 0:06 0:06 0:05 0:05 0:05 0:05 0:05 0:04 0:04 0:04
160 0:07 0:06 0:05 0:05 0:05 0:05 0:05 0:04 0:04 0:04 0:04 0:04
170 0:07 0:05 0:05 0:05 0:04 0:04 0:04 0:04 0:04 0:04 0:04 0:03
180 0:06 0:05 0:05 0:04 0:04 0:04 0:04 0:04 0:04 0:03 0:03 0:03
190 0:05 0:04 0:04 0:04 0:04 0:04 0:04 0:03 0:03 0:03 0:03 0:03
DSAT ALGORITHM >> NDLS (HR:MIN) AT ALTITUDE (METRIC)
Altitude 0 916 1221 1526 1831 2136 2441 2746 3051 3356 3661 3966
(meters) to to to to to to to to to to to to
915 1220 1525 1830 2135 2440 2745 3050 3355 3660 3965 4270
Depth
( M )
9 4:43 3:37 3:24 3:10 2:58 2:48 2:39 2:31 2:24 2:18 2:12 2:07
12 2:24 1:52 1:44 1:37 1:30 1:25 1:21 1:17 1:13 1:10 1:07 1:04
15 1:25 1:06 1:03 1:00 0:57 0:55 0:52 0:49 0:46 0:43 0:41 0:39
18 0:59 0:45 0:42 0:40 0:38 0:36 0:34 0:32 0:31 0:30 0:29 0:28
21 0:41 0:33 0:31 0:29 0:28 0:27 0:26 0:24 0:23 0:21 0:20 0:19
24 0:32 0:26 0:24 0:22 0:21 0:20 0:19 0:18 0:17 0:16 0:15 0:14
27 0:25 0:19 0:18 0:17 0:16 0:16 0:14 0:13 0:12 0:12 0:11 0:10
30 0:20 0:16 0:15 0:13 0:12 0:12 0:11 0:10 0:10 0:09 0:09 0:08
33 0:17 0:12 0:11 0:11 0:10 0:09 0:09 0:08 0:08 0:08 0:07 0:07
36 0:14 0:10 0:09 0:09 0:08 0:08 0:07 0:07 0:07 0:06 0:06 0:06
39 0:11 0:08 0:08 0:07 0:07 0:07 0:06 0:06 0:06 0:06 0:05 0:05
42 0:09 0:07 0:07 0:07 0:06 0:06 0:06 0:05 0:05 0:05 0:05 0:05
45 0:08 0:06 0:06 0:06 0:06 0:05 0:05 0:05 0:05 0:05 0:04 0:04
48 0:07 0:06 0:06 0:05 0:05 0:05 0:05 0:04 0:04 0:04 0:04 0:04
51 0:06 0:05 0:05 0:05 0:05 0:04 0:04 0:04 0:04 0:04 0:04 0:04
54 0:06 0:05 0:05 0:04 0:04 0:04 0:04 0:04 0:04 0:03 0:03 0:03
57 0:05 0:04 0:04 0:04 0:04 0:04 0:04 0:03 0:03 0:03 0:03 0:03
59
OCS OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5272-r01 (9/28/11)
CAN BE USED AS
Watch
Dive Computer (Air or Nitrox)
Digital Depth Gauge/Timer
Free Dive activity
Compass
DIVE COMPUTER PERFORMANCE
Buhlmann ZHL-16c based PZ+, or DSAT based, algorithm
No Deco limits closely follow PADI RDP
Decompression in agreement with Buhlmann ZHL-16c and French MN90
No Deco Deep Stops - Morroni, Bennett
Deco Deep Stops (not recommended) - Blatteau, Gerth, Gutvik
Altitude - Buhlmann, IANTD, RDP (Cross)
Altitude corrections and O2 limits based on NOAA tables
OPERATIONAL PERFORMANCE
Function: Accuracy:
Depth ±1% of full scale
Timers 1 second per day
Dive Mode Activation:
• Must be in Dive Computer mode, if Wet Activation is set OFF.
• Automatic by immersion in water, if Wet Activation is set ON.
• Cannot be manually activated deeper than 5 FT (1.5 M), if Water Activation is set OFF.
• Cannot operate as a DC at elevations higher than 14,000 feet (4,270 meters)
Dive Counter:
NORM/GAUG displays Dives #1 to 24, FREE displays #1 to 99 (0 if no dive made yet)
Resets to Dive #1, upon diving (after 24 hours with no dives)
Dive Log Mode:
Stores 24 most recent NORM/GAUG dives in memory for viewing
After 24 dives, adds 25th dive in memory and deletes the older dive
Altitude:
Operational from sea level to 14,000 feet (4,270 meters) elevation
Measures ambient pressure every 30 minutes in Watch Mode, when Dive Computer Mode is accessed, and every 15 minutes while in NORM/GAUG/FREE Surface Modes.
Does not measure ambient pressure when Wet.
Compensates for Altitudes above sea level beginning at 3,001 feet (916 meters) elevation and every 1,000 feet (305 meters) higher.
Power:
• Battery (1) 3 vdc, CR2450, Lithium battery (Panasonic or equivalent)
• Shelf life Up to 7 years (when shipped from factory in Deep Sleep mode)
• Replacement User replaceable (annual recommended)
• Use Life 1 year or 300 dive hours if (2) 1 hour dives per dive day
Battery Icon:
Warning >> icon on solid when <= 2.75 volts, Battery change recommended
Alarm >> icon on flashing when <= 2.50 volts, change the Battery, will not function as a DC
Operating Temperature:
Out of the water >> between 20 °F and 140 °F (-6 and 60 °C).
In storage case provided >> between 14 °F and 158 °F (-8 and 70 °C).
In the water >> between 28 °F and 95 °F (-2 and 35 °C).
BAR GRAPHS
TLBG segments O2BG segments
• No Deco Normal zone 3 • Normal zone 3
• No Deco Caution zone 1 • Caution zone 1
• Decompression zone 1 • Danger zone 1
VARI 60 FT (18 M) & Shallower Deeper than 60 FT (18 M)
segments FPM MPM segments FPM MPM
0 0 - 10 0 - 3 0 0 - 20 0 - 6
Normal Zone 1 11 - 25 3.5 - 7.5 1 21 - 50 6.5 - 15
Caution Zone 2 26 - 30 8 - 9 2 51 - 60 15.5 - 18
Too Fast Zone (flashing) 3 (all) > 30 > 9 3 (all) > 60 > 18
SPECIFICATIONS
60
OCS OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5272-r01 (9/28/11)
SPECIFICATIONS (CONTINUED)
NUMERIC DISPLAYS: Range: Resolution:
Watch Time of Day 0:00:00 to 23:59:59 hr:min.sec 1 second
Watch Alternate Time 0:00:00 to 23:59:59 hr:min.sec 1 second
Watch Time Differential - 23 hr to 0 to + 23 hr 1 hour
Watch Countdown Timer 23:59 to 0:00 hr:min 1 minute
Watch Chrono Lap # 1 to 9 1 (Lap)
Watch Chrono Lap Time 0:00:00.00 to 99:59:59.99 .01 second
hr:min:sec_ .01 sec
PC Countdown Timer 1:59 to 0:00 min:sec 1 second
Altitude Level Sea, EL 2 to EL 7 1 (level)
Time to Fly 23:50 to 0:00 hr:min 1 minute
(starting 10 min after the dive)
Time to Desat 23:50 to 0:00 hr:min 1 minute
(starting 10 min after the dive)
Temperature 0 to 140°F (-9 to 60°C) 1°F (C)
Max Operating Depth 330 FT (100 M)
NORM/GAUG SI Time 0:00 to 23:59 hr:min 1 minute
NORM/GAUG Dive Number 0 to 24 1
NORM Depth (display) 0 to 330 FT (100 M) 1 FT (0.1/1 M )
GAUG Depth (display) 0 to 660 FT (200 M) 1 FT (0.1/1 M )
NORM/GAUG EDT 0:00 to 9:59 hr:min 1 minute
NORM DTR (NDC, OTR) 0:00 to 9:59 hr:min 1 minute
FO2 Set Points (Gas 1, 2, 3) Air, 21 to 100 % 1 %
PO2 Value (Gas, 1, 2, 3) 0.00 to 5.00 ATA .01 ATA
No Deco Deep Stop Time 2:00 to 0:00 min:sec 1 second
No Deco Safety Stop Time 5:00 to 0:00 min:sec 1 second
Deco Stop Time 0:00 to 9:59 hr:min 1 minute
Total Ascent Time 0:00 to 9:59 hr:min 1 minute
Violation Countdown Timer 23:50 to 0:00 hr:min 1 minute
FREE SI Time 0:00 to 59:59 min:sec 1 second
1:00 to 23:59 hr:min 1 minute
FREE Dive Number 0 to 99 1
FREE Countdown Timer 59:59 to 0:00 min:sec 1 second
FREE EDT 0:00 to 59:59 min:sec 1 second
WARNING: If your OCS stops working for any reason while operating as a Dive Computer, it is important that
you have anticipated this possibility and are prepared for it. This is an important reason for not pushing the no
decompression and oxygen exposure limits, and a critical reason to avoid entering decompression.
If you dive in situations where your trip would be ruined or your safety would be jeopardized by losing the use of
your OCS, a backup instrument system is highly recommended.
61
OCS OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5272-r01 (9/28/11)
INSPECTION / SERVICE RECORD
OCS Serial Number: ___________________________________________________________________________________________________
OCS Firmware Rev: ___________________________________________________________________________________________________
Date of Purchase: ___________________________________________________________________________________________________
Purchased from: ___________________________________________________________________________________________________
Below to be filled in by an Authorized Oceanic Dealer:
Date Service Performed Dealer/Technician
OCEANIC WORLD WIDE
OCEANIC USA
2002 Davis Street
San Leandro, CA 94577
Tel: 510/562-0500
Fax: 510/569-5404
Web: www.OceanicWorldwide.com
E-mail: hello@oceanicusa.com
OCEANIC EUROPE
Augsburg, Germany
Tel: +49 (0) 821 810342 0 Fax: +49 (0) 821 810342 29
Web: www.oceanic-eu.com
E-mail: office@oceanic.de
OCEANIC UK
Devon, United Kingdom
Tel: (44) 1404-891819 Fax: +44 (0) 1404-891909
Web: www.OceanicUK.com
E-mail: helpyou@oceanicuk.com
OCEANIC AUSTRALIA
Rosebud, Victoria, Australia
Tel: 61-3-5986-0100 Fax: 61-3-5986-1760
Web: www.OceanicAUS.com.au
E-mail: sales@OceanicAUS.com.au
OCEANIC ASIA PACIFIC
Singapore
Tel: +65-6391-1420 Fax: +65-6297-5424
E-mail: info@oceanicasia.com.sg
OCEANIC HAWAII and MICRONESIA
Kapolei, Hawaii
Tel: 808-682-5488 Fax: 808-682-1068
E-mail: lbell@oceanicusa.com
62
OCS OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5272-r01 (9/28/11)
OCS
DIVE COMPUTER
OPERATING MANUAL
10

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