Dive mode and dive computers

[Berthold Stoeger]

Hi Robert,

On Monday, 28 January 2019 08:33:15 CET Robert Helling wrote:
> As you mention, dive mode is now a time dependent property as there can be
> bailout (historically, it was per dive and bailout was indicated by setting
> po2 to 0), so the setting in the dive computer is only about the initial
> dive mode before the first event that changes it. Note that also events
> (and thus in particular dive mode changes) are per dive computer and not
> per dive. I agree that most of the time all computer should agree about the
> question of what you are breathing. But please note that in particular for
> planned dives the different “dive computers” are also our vehicle of
> storing different versions of the same dive (e.g. for bailout planning or
> comparing the actual dive with the original plan). And for those versions
> it can be that they differ in what they believe what the dive mode is at
> 42min into the dive.
> > It gets even more curious when multiple dives are selected. Then the n-th
> > dive computer of all these dives will have their mode edited. Is that
> > correct?
> I agree that this makes less and less sense. If anything, all dive modes
> should be changed (so a user can turn her last ten dives into CCR dives of
> which the dive computer wasn’t aware of as it was in gauge mode).
> 
> Does that make sense?

Thank you for the explanations. I kind-of get it now. The semantics on edit 
are really surprising (modify the n-th DC unless it doesn't exist in which 
case modify the default DC), but let's keep it that way until someone 
complains.

Berthold