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To: techdiver@opal.com
Subject: Re: suunto ion
From: Jody Svendsen <svendsen@sh*.ne*>
Date: Wed, 31 Aug 1994 16:41:36 -0400 (EDT)
> anyone have any experience with the Suunto Ion, or Suunto's in general?

I assume that you mean the Suunto Eon, which is functionally identical to 
the Suunto Soulution except for the addition of air integration.

The Solution is a good computer, I have extensive experience with it and 
IMHO it is the second best computer for decompression diving.  Compared 
with the Uwatec computers (Aladin Pro, US Divers M2, etc) it requires 
about the same amount of decompression on the first dive, although the 
first stop is IMHO a bit too shallow.  The computer tends to 
underestimate the ascent time; on the bottom it calls for similiar ascent 
times to the Uwatec computers, but unlike the Uwatec's, the computer 
takes significantly longer than it says to clear.

It gives more bottom time on repative dives than the Uwatec, especially 
if the first dive was a decompression dive and the surface interval was 
an hour our less.  It is still much more conservative than the Orca 
computers on repets.  Overall I think with the exception of a somtimes 
too shallow first stop, it is a safe algorythm.  

I do take strong exception to air-integrated computers.  In the last five 
years, of the four divers I have seen run out of air, three were diving 
air integrated computers.  In one of those cases, it was due to an 
incorrect pressure guage reading on a Orca Delphi (1000PSI when he had 
0).  In the other two cases, I belive it was becuase digital numbers do 
not "sink in" the way a guage reading does.  A glance at a guage at 
300PSI, well down into the RED zone scares most divers, but a nice 
digital readout saying "318PSI" doesn't seem to shake people up.  This 
was my experince when I was diving my Delphi (for the short time it 
lasted); I found myself pushing my air MUCH more.  

   Jody Svendsen
   MiG Technologies

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