I have an Oceanic Datatrans Plus (the new air-integrated EANx version),
which has the "new extended deep diving algorithm".  I have taken this
computer on half a dozen or so dives to 50m (165ft) for which I have cut
dive plans using desktop deco software first, and planned to use the
computer as a depth, time and gas gauge.

It has had no problem with the deco, although it doesn't give enough (IMHO).
In fact, it would let me out of the water 5-10 mins before my desktop plan,
and 3-6 mins before a dive buddy using an Aladin NitroX.

BUT, like all Oceanic computers it has three zones of deco, green (okay),
yellow (Caution) and red (deco).  When I say it lets me out of the water
earlier, I mean that it goes out of deco into the yellow.  What I have found
so far on every dive is that it moves out of yellow and into the green plus
or minus 30 seconds of my plan cut on the desktop.

So my backup plan (I still cut plans on the desktop) is to use the DTP until
its at least back into the green zone.

It doesn't allow gas changes, this would be nice, but since it doesn't I
also get the benefit of my higher FO2 deco mix, so I have heaps of fudge in
my dive plan.

This is the way I use my computer, always interested in other opinions and
methods.

Regards, Des
-----Original Message-----
From: Jeremy Downs <dcrco@jp*.ne*>
To: christo <christo@az*.co*.za*>; techdiver list <techdiver@aquanaut.com>
Date: Tuesday, 2 December 1997 21:08
Subject: Re: Dive Computers


>Yes, I had an Oceanic (which I love for normal diving) go completley insane
>on the deco requirements for a 135' dive (TOD 160') that was less than
20min
>long. After a half an hour of stops it still wouldn't let me go up to 10'.
>
>
>At 06:37 PM 12/1/97 -0800, christo wrote:
>>Rodale Scuba diving have done a fair amount of tests on computers. Refer
>>to their info at http://www.scubadiving.com/
>>
>>There are summaries of computers, and also tables on features,
>>conservatism etc. Maybe it can give you some insight.
>>
>>We have a few Oceanic computers in the club. We had some that gave
>>trouble on deeper dives. (50m +;  160ft +) Usually it started loading you
>>with Nitrogen at about 5x the required rate. Anyone else that had similar
>>experiences?
>>
>>Regards
>>
>>Christiaan Grosskopf
>>
>>
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>
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