On 07 March, 2015 - Davide DB wrote:

> Il 07/mar/2015 12:36 "Anton Lundin" <[email protected]> ha scritto:
> 
> > here's my 2 ören:
> >
> > If i where in for a cheap option i would probably by a second-hand OSTC2.
> > There's a lot of them out there on the market and you could be lucky to
> > pick one up for the right price.
> > If i where going to by a new computer it would be a new OSTC3.
> >
> 
> Anton how does it work sensor monitoring in the ostc3? Via a Fisher
> connector?

The OSTC3 have a fibre input port, for a digital signal. That digital
signal can be generated from the HW Hud[1] or a ppO2 Monitor[2].

There are some rumors of a OSTC cR. To me it looks like a OSTC3, in a
OSTC2C case, with a S8 analog input.

> Do you use it as DC or BT?

I run my OSTC3 as a DC, and my Suunto Vyper in Gauge mode in my pocket.

There have bin some long running debate about DC vs. BT in the tech
diving community and the old truths about DC isn't true anymore, like
some of the FUD GUE is still spreading[3]. It might have bin that case
10-15 years ago, when a trimix computer was 10-15 times more expensive
than today. GUE does a lot of things right, and really good, but on the
subject of DC's, i think they are completely wrong.

When your pushing the limits, ex, deco diving, wreck penetration or
cave diving you always need proper planing. Gas planing, time planing,
deco planing, task planing and so on.

I think diving with a DC is a great way of verifying your plan on the
fly and adapting your plan. If I've got a sonar depth of a wreck at 60m
and when we actually hit the wreck its 68m the plan becomes something
quite different. Instead of staying at 60m or calling the dive, you have
the option to shorten the bottom time and get some sort of dive out of
it.
The same goes for the opposite, which is way more common. The sonar
depth might have said 65 meters but all the interesting bits where on
55m. Then you can extend your bottom time at 55m and use your expensive
helium in a sensible fashion.


//Anton


1. http://www.heinrichsweikamp.com/?id=79
2. http://www.heinrichsweikamp.com/?id=405
3. https://www.globalunderwaterexplorers.org/equipment/config
   - Computer Diving

-- 
Anton Lundin    +46702-161604
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