Catalogue

Please Note: OC1 units shipped after November 1, 2011 no longer feature Buddy Pressure Check.

Grab Oceanic OC1 Dive Computer Operating Manual

Oceanic OC1 dive computer has 4 buttons on the interactive control console. By using them and their combinations you will have access to wide variety of menus, submenus, modes, and settings. But, before, you need stady documentation thoroughly, because it is quite a lengthy one and you may be confused at the beginning.

Oceanic OC1 dive computer (titanium case)

Dive computer has 2 bar graphs. On the left - we have shared bar graph for representation of following information:

• TLBG shows nitrogen tissue loading and represents your No-decompression or Decompression status;
• O2BG – represents what is the level of oxygen accumulation during a dive or over a 24 hours time

And on the right side we have bar graph VARI that rapresents our ascent speed rate.

During set up and diving in NORM Dive Mode (Air/Nitrox), Gauge, or Free Dive modes, OC1 will be showing several displays (main and few alternatives) with all information according to the type of your dive, No-Decompression or Decompression conditions, also it will show main and alternative displays for Deep Stop and Safety Stop, all applicable alarms and violation displays (if you had any).

As this is scuba dive computer with compass - you may access COMPASS Mode any time on surface or underwater. Just spend time to calibrate it properly!

All settings divided into certain groups and we access them to customize our Oceanic OC1 scuba dive computer before diving. Alarms for freediving can be set from accessing Free Menu.

Copy this Oceanic OC1 Settings Card for your Reference and Share with your friends and buddies!

Oceanic OC1: Diving With Air & Nitrox

Oceanic OC1 scuba dive computer displays Dive Time Remaining (DTR) by monitoring your current depth, oxygen accumulation, Air Time remaining, No-Decompression status. It shows you not only your DTR at certain depth in minutes, but also displays status of TLBG or O2BG by adding or taking away segments of those graphs, and calculates Air Time Remaining that is based on the current depth and your breath rate (with transmitter, of course).

When you dive with compressed air – you have 79% of nitrogen and 21% of oxygen approximately. If this is the case – your tissues absorb nitrogen and Dive Time Remaining (DTR) is shown according to nitrogen loading.

When you dive with enriched air - Nitrox – it is a different scenario. You have different percentage of nitrogen and oxygen and your body responds differently to such a gas mix. In this case you are exposed to oxygen toxicity.
When amount of time remaining before you reach O2 limits becomes less than No-Decompression (NDC) Time remaining at certain depth, calculations for that depth will be controlled by O2, and Oceanic OC 1 dive computer shows Oxygen Time remaining (OTR) as Dive Time Remaining (DTR) on the main display.

Copy this Oceanic OC1 NO-DECO Mode Card for your Reference and Share with your friends and buddies!

Upon reaching certain conditions you may get Deep Stop and Safety Stop prompts if those parameters were set to ON.

It goes without saying that OC1 constantly monitors our O2 exposure and PO2 level. If you reach depth where PO2 level will be less than 0.2 ATA of the PO2 Set Point - dive computer will give you warning, and if PO2 level reaches PO2 Set Point - you will get that irritating alarm, and to shut it you must ascend where the level of PO2 will be less than Set Point.

Oceanic OC1 gives as High O2 warning when oxygen toxicity reaches to 80% (240 OTU) and alarm when O2 hits 100% (300 OTU) with all vital data displayed.

If we exceed our No-Decompression Limits - dive computer will activate Decompression mode. We must safely ascend to the Decompression Stop Depth displayed and stay there or just a bit below for Decompression Time displayed.

Scuba dive computer manages Decompression stops by displaying two arrows and a Stop bar. When we see Stop bar and UP/DOWN arrows at the same time all together - we are at correct Decompression Stop depth.

Copy this Oceanic OC1 DECO Mode Card for your Reference and Share with your friends and buddies!

Also you may create violations during Decompression Mode, like Conditional violation or Delayed violations. That means that you ascended shallower than required Stop Depth and stayed at that level for some time, or Decompression Stop depth must be performed within depth of 18 - 21 meters, or you descended deeper than Maximum Operational Depth of 100 meters.

In the case of Conditional Violation you won’t be given an off-gassing credit, but instead you will get penalty time and you must work it off before earning off-gassing credit.

All those violations have appropriate main and alternative displays available.

Oceanic OC1: Diving In GAUGE Mode

Another dive mode of Oceanic OC1 is Gauge. In Gauge mode OC1 doesn't calculates your No-Decompression Limits and works as a depth gauge and timer only. In this mode you may access COMPASS any time and it allows you to use all your transmitters.

Below is a summary from main and alternative displays while diving in Gauge mode:

1. Air Time Remaining (ATR);
2. Elapsed Dive Time (EDT);
3. Tank pressure;
4. transmitter (TMT) in use;
5. current and maximum depth reached;
6. VARI, while ascending;
7. temperature;
8. time;
9. applicable icons

Oceanic OC1: FREEdiving

Before freediving you need to set some specific parameters for it and they are accessible from FREE Menu:

• Count Down Timer (CDT);
• Elapsed Dive Time (EDT) alarm - factory preset for 30 seconds. If set to ON - alarm sounds every 30 seconds elapsed in Freedive mode;
• 3 Descending Depth (DD) alarms, each alarm goes for progressively deeper depth at range 10 - 100 meters.

It is worth to say that Freedive mode shares some settings with Air and Nitrox dive modes and they are listed below:

• WET Activation;
• units;
• Algorithm;
• Personal Conservative Factor;
• Backlight duration

When Oceanic OC1 senses 1.5 meters for 5 seconds - it will activate Freedive mode, having in mind that you selected Freedive before.

Freedive display has main and alternative screens and below is a summary of what you will get:

• No-Decompression (NDC) Time Remaining;
• Elapsed Dive Time (EDT);
• TLBG;
• current depth;
• Countdown Timer status;
• time;
• temperature;
• applicable icons

In Freedive mode this Oceanic computer monitors nitrogen loading that you may have from previous dives and current freedive, and it displays Tissue Loading Bar Graph respectively. And this is a feature of other Oceanic computers, like Veo 2.0 and veo 3.0, for example. It is a great benefit for us - to stay well-informed and alert of our nitrogen absorption all the time!

During freedive you will certainly get freedive alarms that you set before with appropriate dive data displayed.

When nitrogen level hits caution zone with 4 segments filled-up on TLBG - you will get High Nitrogen warning. And if you get into the situation of High Nitrogen alarm during freedive - VIOL graphic and full TLBG are displayed and your No-Decompression Time (NDC) will be displayed as 0 (zero). It happens if you nitrogen level from previous dives reaches Decompression condition.

When you resurface - Oceanic OC1 scuba dive computer will lock to FREE Mode for 24 hours. During this time you may access digital watch and compass functions.

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On surface you will have an access to following modes of Oceanic OC1:

1. FLY/Desaturation countdown timers;
2. Dive Planner - this function allows us to see No-Decompression times at corresponding depths at the range 9 - 57 meters, regarding to Algorithm selected, FO2 Gas 1 Set Point, and nitrogen loading from previous dives;
3. PC upload/download. This function allows us to upload settings for time and date, alarms, and utilities. You may download from OC1 to PC dive profiles, set points, and other dive data;
4. Air, Nitrox, and Gauge mode Logbook - stores 24 the most recent dives

Oceanic OC1: What Divers Say

Oceanic OC1 is a high-tech dive computer with variety of unique and distinctive features, which determine quite high price of this dive equipment.

We found that buttons are easy to press, display was clearly seen and it was easy to interpret all dive data displayed. All audio alarms were loud enough even with hood - so, not a single problem with those things.

Manuals are difficult at the beginning, but you need to know that it is a high-tech dive computer, and should prepare yourself to have a learning curve while studying this Oceanic computer!

Oceanic OC1	Dive-Computer-Wizard Rating

Please Note: Oceanic OC1 units shipped after November 1, 2011 no longer feature Buddy Pressure Check.

And as for our conclusion about this sophisticated piece of diving equipment - If you are a serious diver, beginner, advanced, or technical, if you are not afraid to spend time to learn all things about this marvelous dive computer, if you have substantial budget and want to have dive computer that has all features necessary for you to dive deeper and stay underwater longer, dive computer that you will be proud to wear, dive computer that will let you enjoy wide variety of activities – Oceanic OC1 is for you!