On 13 November, 2014 - Linus Torvalds wrote: > On Nov 13, 2014 2:04 PM, "Anton Lundin" <[email protected]> wrote: > > > > This came out of a discussion with a frend who had his Uwatec 330 show > > him a depth of 72 meters while his Liquivision Xen showed him 69 meters. > > This was due to that his Xen was set in salinity mode, while Uwatec 330 > > always shows a depth calibrated against fresh water. > > Wow. What an odd choice. But I checked the manual, and it's documented. I > guess the idea is that that way it at least shows a deeper depth than real, > so it's that conservative choice. >
Yes, i found it in the manual too. I first suspected something down that line, but in the reverse, since you can't adjust the Uwatec but you can adjust the salinity in the Xen. > Anyway, I didn't mean to say the patch shouldn't be applied, it's more if a > "you seldom even know what the dive computer does, or the actual real > depth". It might be a good idea to warn about it, especially since planning > using fresh water gives you deeper dives, so while calibrating a dive > computer for fresh water is arguably conservative, *planning* for fresh > water is not. If your dive equipment shows saltwater depth, you're now > diving at higher pressures than you planned for if you follow the depth > profile.. > I'm all for sane and conservative defaults. Thats why i made sure it defaults to 1.03 kg/l, the same value as we used in the planner before, and i choose to _not_ save the value between plans, so if you do want to plan "fresh-water-dives", you need to do a conscious choice. //Anton -- Anton Lundin +46702-161604 _______________________________________________ subsurface mailing list [email protected] http://lists.subsurface-divelog.org/cgi-bin/mailman/listinfo/subsurface
