Personal level Explanation
Aggressive (-1) Ideal conditions, good physical fitness, well experienced
with dives in the near past
Default (0) Ideal conditions (default value)
Conservative (+1) Some risk factors or conditions exist
More conservative (+2) Several risk factors or conditions exist
WARNING: Personal adjustment setting 0, -1 or -2 causes a high risk of DCS, or other
personal injury, and death.
4.28. Rebreather diving
By default Suunto EON Steel Black has one mode dedicated to rebreather diving, CCR mode.
This mode uses
fixed high/low setpoint values which you can modify in the dive computer or
through Suunto app.
Suunto recommends using classic or graphical style with rebreather diving. However, you can
use prominent view and customize fields if desired.
Fixed setpoint calculation enables Suunto EON Steel Black to be used as a backup dive
computer on rebreather dives. It does not control or monitor the rebreather unit in any way.
When you select your custom multi-gas mode for CCR (closed-circuit rebreather) diving in the
dive mode setting, your device will have two
dierent gas menus: CC gases (closed-circuit
gases) and OC gases (open-circuit gases).
NOTE: For rebreather dives, Suunto EON Steel Black should be used as a backup
device only. The primary control and monitoring of your gases should be done through the
rebreather itself.
4.28.1. Closed-circuit gases
On a rebreather dive, you need at minimum two closed-circuit gases: one is your pure oxygen
tank, and the other is a diluent. You can
define additional diluents as needed.
You can add only diluent(s) to the gas list. By default, Suunto EON Steel Black assumes that
oxygen is used, so it is not shown in the gas list.
The correct oxygen and helium percentages of the diluent gases in your diluent cylinder(s)
must always be entered into the dive computer (or through Suunto app) to ensure correct
tissue and oxygen calculation. Diluent gases used on a rebreather dive are found under CC
gases in the main menu.
4.28.2. Open-circuit gases
As with diluents, you must always
define the correct oxygen and helium percentages of
bailout gases for all your cylinders (and additional gases) to ensure correct tissue and oxygen
calculation. Bailout gases for a rebreather dive are defined under OC gases in the main menu.
4.28.3. Setpoints
Rebreather dive mode has two setpoint values, low and high. Both are
configurable:
Suunto EON Steel Black
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