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Pressing the left button ”Next Gas” switches to the next gas. If the gas number is preceded by an ”A”
then this is the current active gas. It is possible to adjust this but not to delete it (0% O2 and 0% HE).
If all 5 gases have been displayed then the user automatically arrives back at the menu item ”Define Gas”.
6.16.4
Dive Planner
The dive planner facilitates the calculation of decompression profiles for simple dives. Two different modes are
available here:
Mode
Surface Mode
Dive Mode
Description
In the surface mode the user is able to plan a dive on the basis of the parameters
entered. The current CNS load is taken into account during the calculation.
In dive mode the decompression profile is calculated based on
the current situation.
When calculating the decompression profile all gases input and the defined low and high gradient factors
are taken into account. Additionally, the profile for the respective active circuit (CC or OC) is generated.
The dive planner is only intended for planning simple dives. Multi-level dives are therefore not supported.
Furthermore, the following assumptions are applied to the calculation:
•Descent rate is 18m/min and the ascent rate is 10m/min.
•For OC, the gas in use will be the gas with the highest PPO2 less than 1.40 for the bottom gas and 1.61
for deco gases. The deco gas max PPO2 can be changed in the “ADV Config 1” menu.
•For CC, the gas in use will be the gas with the highest PPO2 less than 1.05.
•The planner will use the configured last stop depth.
•For CC, the PPO2 is constant for the entire dive.
•The RMV is the same while diving as during deco.
•The Dive Planner does not provide thorough validation of the profile. For example, it does not check
for nitrogen narcosis limitations, gas usage limitations, CNS percentage violations, or isobaric counter-­
diffusion risks due to sudden helium switches. The user is responsible for ensuring a safe profile is followed.
2014 JJ-CCR ApS – Version 2.00 / Revision 04
JJ- CCR ApS 2014
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