User manual inconsistencies: dive planner

[Dirk Hohndel]

On Mon, Aug 04, 2014 at 02:59:55PM +0200, Robert Helling wrote:
> > 1. I THINK that this is what Robert communicated to me at some stage
> > but I am not sure. We need input from Robert here, especially since
> > some of the user manual for the planner was written before the
> > finalisation of the planner UI. To be safe, I would keep all PO2max
> > values in the user manual to 1.5, even if one can set it higher in the
> > planner setup values. 
> > 
> 
> I don’t want to recommend anything. The planner switches to gases when
> they become available. That is determined as follows:
> 
> When you add a new cylinder/gas or change the O2 fraction of that gas,
> the planner calculates the “switch at” column to be the deepest integer
> multiple of 3m/10ft where that gas is allowed according to the deco pO2
> setting. That can be overwritten manually by typing in that column.
> 
> The reason for choosing 1.6bar as default deco pO2 was that this gives
> MODs of 6m for pure Oxygen and 21m for EAN50. If you change to 1.5bar
> you get 3m/18m according to the above rule (which is not what I use and
> I thought 6m/21m are pretty much standard values). From what you can
> read, 1.6bar is a bit on the aggressive side but my impression is this
> is pretty much what everybody does with staged deco.
> 
> Therefore I would suggest to use 1.6bar as well for the examples of the
> manual since that does not lead to surprises for gas switch depth. But
> that is my subjective opinion.

I agree with Robert here.

/D