Oceanic OC1 User manual

3
CONTENTS
WARRANTY, NOTICES, MODEL .....................................................................................................................................8
ABBREVIATIONS .............................................................................................................................................................9
INITIAL ACTIVATION ......................................................................................................................................................10
FEATURES AND FUNCTIONS .......................................................................................................................................11
OVERVIEW ................................................................................................................................................................13
MENU SYSTEM, MODE STRUCTURE .....................................................................................................................14
AUDIBLE ALARM .....................................................................................................................................................22
PC INTERFACE .........................................................................................................................................................24
POWER SUPPLY, BATTERY STATUS .....................................................................................................................25
WATCH MODE ................................................................................................................................................................29
FUNCTIONS ..............................................................................................................................................................30
WATCH DEFAULT TIME ...........................................................................................................................................31
WATCH MENU ...........................................................................................................................................................33
Countdown Timer ...............................................................................................................................................33
Chronograph .......................................................................................................................................................35
Daily Alarm ..........................................................................................................................................................36
Set Time Menu ....................................................................................................................................................38
Set Date Format .............................................................................................................................................38
Set Hour Format ............................................................................................................................................38
Set Time .........................................................................................................................................................39
Set Date ..........................................................................................................................................................40
Set Alternate Time .........................................................................................................................................41
Select Default Time .......................................................................................................................................42
Dive Computer Mode Access ..................................................................................................................................44
Dive Computer Operating Modes ...........................................................................................................................45
NORM Surface Functions ........................................................................................................................................46

4
CONTENTS (continued)
NORM SURFACE MODES .............................................................................................................................................47
NORM SURF MAIN AND ALTS.................................................................................................................................48
NORM MENU .............................................................................................................................................................50
Fly/Dsat Time ......................................................................................................................................................50
NORM Plan Mode ................................................................................................................................................51
NORM/GAUG Log Mode .....................................................................................................................................54
Set F (FO2) Menu ................................................................................................................................................56
Set FO2 Gas 1 ................................................................................................................................................57
Set FO2 Gas 2 ................................................................................................................................................58
Set FO2 Gas 3 ................................................................................................................................................59
Set FO2 Default ..............................................................................................................................................60
Set A (Alarms) Menu ...........................................................................................................................................60
Set Audible Alarm ..........................................................................................................................................61
Set Depth Alarm ............................................................................................................................................61
Set EDT Alarm ...............................................................................................................................................62
Set TLBG Alarm .............................................................................................................................................62
Set DTR Alarm ...............................................................................................................................................63
Set Turn Press Alarm ....................................................................................................................................63
Set End Press Alarm .....................................................................................................................................64
Set PO2 Alarm ...............................................................................................................................................64
Set U (Utilities) Menu ..........................................................................................................................................65
Set Wet Activation .........................................................................................................................................65
Set Units .........................................................................................................................................................66
Set Deep Stop ................................................................................................................................................66
Set Safety Stop ..............................................................................................................................................67
Set NDL Basis ................................................................................................................................................68
Set Conservative Factor ...............................................................................................................................68
Set Glo (Backlight) Duration ........................................................................................................................69
Set Sampling Rate .........................................................................................................................................69
Set TMT Menu ................................................................................................................................................70
Set TMT 1 ..................................................................................................................................................70
Set TMT 2, 3 ..............................................................................................................................................71
Select Dive Mode ................................................................................................................................................73

5
CONTENTS (continued)
NORM/GAUG History Mode ...............................................................................................................................73
Serial Number .....................................................................................................................................................74
Battery/TMT Status .............................................................................................................................................75
DIVE MODE FEATURES ................................................................................................................................................77
PROXIMITY OF THE TMTS AND OC1 .....................................................................................................................79
Link Interruption Underwater ............................................................................................................................79
WET ACTIVATION .....................................................................................................................................................80
BACKLIGHT ..............................................................................................................................................................80
BAR GRAPHS ...........................................................................................................................................................81
TLBG ....................................................................................................................................................................81
O2BG ....................................................................................................................................................................82
VARI .....................................................................................................................................................................83
ALGORITHM (NDL BASIS) .......................................................................................................................................84
CONSERVATIVE FACTOR ........................................................................................................................................85
DEEP STOP ...............................................................................................................................................................85
SAFETY STOP ..........................................................................................................................................................86
OVERVIEW OF FO2 SETTINGS AND 50% DEFAULT .............................................................................................86
Setting FO2 for NORM Nitrox Dives ..................................................................................................................86
FO2 set for Air .....................................................................................................................................................87
FO2 set for Nitrox ...............................................................................................................................................87
DIVE TIME REMAINING (DTR) .................................................................................................................................88
No Deco DTR (NDC) ............................................................................................................................................88
O2 DTR (OTR) ......................................................................................................................................................89
Air Time Remaining (ATR)..................................................................................................................................89
ERROR (RESET DURING DIVE) ..............................................................................................................................91
NORM Dive Mode Structure ....................................................................................................................................92
NORM DIVE MODES ......................................................................................................................................................93
NO DECO MAIN AND ALTS......................................................................................................................................94

6
CONTENTS (continued)
DEEP STOP ...............................................................................................................................................................96
SAFETY STOP ..........................................................................................................................................................98
DECOMPRESSION ...................................................................................................................................................99
VIOLATION MODES ................................................................................................................................................102
HIGH PO2 ................................................................................................................................................................108
HIGH 02 ...................................................................................................................................................................111
GAS/TMT SWITCHING AND BUDDY PRESSURE CHECK ........................................................................................115
DIGITAL GAUGE MODE...............................................................................................................................................121
GAUG SURFACE MAIN AND ALTS .......................................................................................................................122
GAUG MENU ...........................................................................................................................................................124
Fly Time .............................................................................................................................................................124
Select Dive Mode ..............................................................................................................................................124
GAUG DIVE MAIN AND ALT...................................................................................................................................125
Delayed Violation ..............................................................................................................................................126
FREE DIVE MODE ........................................................................................................................................................129
FREE SURFACE MAIN AND ALTS.........................................................................................................................130
FREE MENU ............................................................................................................................................................132
Countdown Timer .............................................................................................................................................132
Set CDT ........................................................................................................................................................133
Elapsed Dive Time Alarm .................................................................................................................................134
Set EDT Alarm .............................................................................................................................................134
Descending Depth Alarms ...............................................................................................................................134
Set DD Alarms .............................................................................................................................................134
Select Dive Mode ..............................................................................................................................................137
FREE DIVE MAIN AND ALTS .................................................................................................................................138
FREE DIVE ALARMS ..............................................................................................................................................139
COMPASS MODE .........................................................................................................................................................145
OVERVIEW ..............................................................................................................................................................147

7
COMPASS MENU ....................................................................................................................................................148
Calibration .........................................................................................................................................................148
North OP Mode ..................................................................................................................................................150
Reference OP Mode ..........................................................................................................................................151
Set Reference Heading ...............................................................................................................................151
Declination ........................................................................................................................................................152
Set Declination ............................................................................................................................................152
COMPASS OPERATION .........................................................................................................................................153
PC Requirements.........................................................................................................................................................156
REFERENCE ................................................................................................................................................................157
UPLOADING SETTINGS AND DOWNLOADING DATA .........................................................................................158
CARE AND CLEANING...........................................................................................................................................160
INSPECTIONS AND SERVICE ...............................................................................................................................160
BATTERY REPLACEMENT ....................................................................................................................................162
Data Retention ..................................................................................................................................................163
TMT INSTALLATION ON REGULATOR .................................................................................................................167
ALTITUDE SENSING AND ADJUSTMENT ............................................................................................................168
TECHNICAL DATA........................................................................................................................................................169
PZ+ ALGORITHM NDL CHART ..............................................................................................................................170
DSAT ALGORITHM NDL CHART ...........................................................................................................................171
SPECIFICATIONS ...................................................................................................................................................172
FCC COMPLIANCE .................................................................................................................................................176
INSPECTION/SERVICE RECORD ...............................................................................................................................177
OCEANIC WORLD WIDE .............................................................................................................................................178
CONTENTS (continued)

8
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.
OC1 Operating Manual, Doc. No. 12-2761
© 2002 Design, 2009
San Leandro, CA USA 94577
TRADEMARK, TRADE NAME, AND SERVICE MARK NOTICE
Oceanic, the Oceanic logo type, OC1, the OC1 logo, Air Time Remaining (ATR), Diver Replaceable Batteries, Graphic
Diver Interface, Tissue Loading Bar Graph (TLBG), Pre Dive Planning Sequence (PDPS), Set Point, Control Console, Turn
Gas Alarm, and OceanLog are all registered and unregistered trademarks, trade names, and service marks of Oceanic.
All rights are reserved.
PATENT NOTICE
U.S. Patents have been issued, or applied for, to protect the following design features:
Air Time Remaining (U.S. Patent no. 4,586,136 and 6,543,444) and Data Sensing and Processing Device (U.S. Patent
no. 4,882,678). Set TLBG Alarm and other patents pending. User Setable Display (U.S. Patent no. 5,845,235) is
owned by Suunto Oy (Finland).
DECOMPRESSION MODEL
The programs within the OC1 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 OC1 dive computer model is
based upon the latest research and experiments in decompression theory. Still, using the OC1, just as using the
U.S. Navy (or other) No Decompression Tables, is no guarantee of avoiding decompression sick-
ness, 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.

9
DISPLAY ABBREVIATIONS
ACTIV =Activation
AL =Alarm
ALT =Alternate(watchtime)
ATR =AirTimeRemaining
AUD =Audible
AVAIL =Available
BATT =Battery
BUD =Buddy(pressure)
CAL =Calibrate(compass)
CDT(CD) =CountdownTimer
CHRONO =Chronograph(stopwatch)
CONSERV =ConservativeFactor
DD =DescendingDepth(alarm)
DECO =Decompression
DFLT =Default
DSAT =Desaturation(or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)
PRESS =Pressure
PZ+ =Algorithmtype
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
TMT =Transmitter
VIOL =Violation
W =West(compass)

10
OC1 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 OC1 up, the correct Date and USA
Pacific Time will be displayed and it will be ready to operate with full functions.
To wake the OC1 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 OC1 is brought out of the Deep Sleep mode,
it can only be placed back into it by the factory.
NOTICE
STORAGE and INITIAL ACTIVATION

11
Welcome to
OCEANIC
and
THANK YOU
for choosing the
OC1
FEATURES AND FUNCTIONS

12
DISPLAY LAYOUT
Descend,
Ascend,
or Stop
TLBG or
O2BG
BG id
VARI
Log
Mode
Depth id
Temp or
Heading
Press id
Low
Battery
FO2
Nitrox
Time
Daily AL or
TMT Link
Dot Matrix
ICONS

13
OVERVIEW
The OC1 is a fully loaded Watch Dive Computer featuring >>
• 4 Control Buttons
• 10 Menus
• 40 Set Selections
• Increase/Decrease Set Values
• 5 Operating Modes
• 3 Nitrox Gas Mixes
• 35 Warnings/Alarms
• Dual Watch Time
• Dual Algorithm
• Gas/TMT Switching
• Buddy Pressure Check
INTERACTIVE CONTROL CONSOLE
The Interactive Control Console utilizes 4 control buttons that allow
you to maneuver through the OC1'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
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
OC1

14
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 vari-
ous 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
• Set TMT Menu
Each Menu has a Start (First) selection and a Stop (Last) selec-
tion. 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.
FREE
MENU
SEL
>CDT
SET EDT AL
SET DD 1 AL
SET DD 2 AL
SET DD 3 AL
DIVE MODE
SampleMenu
(allselectionsshown)

15
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.
Selectioncan
beaccessed
Thereisaselec-
tionabove
Thereisaselec-
tionbelow
M
A
S
L

16
WATCH MODE STRUCTURE
WATCH
MAIN
Pg.32
MS
AL
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
Pg.80
Ack
DailyAL
Pg.37
A
<2sec
60sec
Pg.
153
Pg.45
Pg.33
Pg.32
Pg.33
Select
>CDT
Chrono
DailyAL
SetTime
2sec

17
NORM SURFACE MODE STRUCTURE
SURF
MAIN
Pg.48
MS
AL
2sec
2sec
<2sec closure
Watch
Mode
Compass
OpMain
NORM
Menu
SURF
ALT1
SURF
ALT2
Light
Pg.80
A
<2sec
60sec
Pg.
153
Pg.32
Pg.50
Pg.49
Pg.49
Select
>Fly/Dsat
Plan
Log
SetF
SetA
SetU
DiveMode
History
SN
Batt/TMT
SURF
ALT3
A
<2sec
Pg.50
<2sec
2sec

18
GAUG SURFACE MODE STRUCTURE
SURF
MAIN
Pg.122
MS
AL
2sec
2sec
<2sec closure
Watch
Mode
Compass
OpMain
GAUG
Menu
SURF
ALT1
SURF
ALT2
Light
Pg.80
A
<2sec
60sec
Pg.
153
Pg.32
Pg.
124
Pg.
123
Pg.
123
Select
>Fly
Log
SetA
SetU
DiveMode
History
SN
Batt/TMT
<2sec
2sec

19
WATCH/NORM/GAUG SET MODE STRUCTURE
NORMorGAUG
Menu
Pg.50/122
SetFMenu**
>FO2_1
FO2_2
FO2_3
FO2Default
Pg.56
SetAMenu
>AudAL
DepthAL
EDTAL
TLBGAL**
DTRAL**
TurnAL
EndAL
PO2AL**
Pg.60
SetUMenu
>WetActiv
Units
DeepStop**
SafetyStop**
NDLBasis**
Conserv**
GloDura
Sampling
TMTs
Pg.65
S
<2sec
S
<2sec
S
<2sec
**=NORMonly
WATCH
Menu
Pg.33
SetTimeMenu
>DateFormat
HourFormat
Time
Date
ALTTime
DefaultTime
Pg.38
S
<2sec

20
FREE SURF MODE STRUCTURE
SURF
MAIN
Pg.130
MS
AL
2sec
2sec
<2sec closure
Watch
Mode
Compass
OpMain
FREE
Menu
SURF
ALT1
SURF
ALT2
Light
Pg.80
A
<2sec
60sec
Pg.
153
Pg.32
Pg.132
Pg.131
Pg.131
Select
>CDT
SetEDTAL
SetDD1AL
SetDD2AL
SetDD3AL
DiveMode
<2sec
2sec