Deco diving for beginners

[Narked@50]

Originally Posted by narkedat50

Hi Pierre

Mark Chase has given some "real life" details on the Vytec he uses, I have never heard of it blanking the screen as it goes out of range of it's calculations, but since I don't dive that deep, and certainly not for that long, I honestly can't comment, I will have a play with it's planner though?

James

Hi Mark

It took a while but I got the answer to the above. The "ascent time" on the Vytec is limited to a viewable 99 minuits and when the calculated ascent time goes over this, the screen displays (- -) but does not loose track of the calculations, they stay in the background and you still get a notification of your deepest stop. When the Vytec has calculated less that 99 minuits of ascent time left, the figures re-appear and continue to count down normaly as deco decreases. Again, for my type of diving this will never be a problem, as I will never be in a position where I get over an hour and a half of deco, but if your into that kind of thing at least you know it still works.

James

[Andy Phillips]

Surely you don't mean DIR could be DIW?

No, I am just absolutly with Chasey on this one, we have both had somewhat uncomfortable experiences at the bottom, clear and consise thought was simply not an option, indeed, finding a part of your vision that is not obscured by a stange flashing geometric pattern (only those who have had a migrane will be able to relate to that one) to look at your computer is hard enough.

Andrew
.

[Janos]

Originally Posted by narkedat50

I ran the simulator on the software you can get from Suunto .

James, do you have a link?

No rush as I'm off diving for the next two days [Insert smug looking smiley here but I haven't figured out how they work on the new system]

Laters,
Janos

[Mark Chase]

Originally Posted by narkedat50

Hi Mark

It took a while but I got the answer to the above. The "ascent time" on the Vytec is limited to a viewable 99 minuits and when the calculated ascent time goes over this, the screen displays (- -) but does not loose track of the calculations, they stay in the background and you still get a notification of your deepest stop. When the Vytec has calculated less that 99 minuits of ascent time left, the figures re-appear and continue to count down normaly as deco decreases. Again, for my type of diving this will never be a problem, as I will never be in a position where I get over an hour and a half of deco, but if your into that kind of thing at least you know it still works.

James

???? My one showes 199 mins of deco at 33mins and -- at 35mins at 60m? After that You start to ascend but it all stayes blank for a long time. I only ever dived it set on Air to 60m once and I was down between 60 and 65 for 40mins. It didnt like it at all . Now I just use it on gauge mode.

ATB

Mark Chase

[Pierre Farrugia]

Hello all,

just came from my dive and ended up bending my vytec! the problem was that I was on a runtime and going up to 15m stop and change gas. The Vytec wanted me to stay at 17m of which i ahd already stopped at 18m. The Vytec kept bleeping and pinting down to descent, but as It still was going time and depth, no problem. then it turned to (--), but to tell you the truth I didn't change gas when it was (--) and then changed to ERR. then I tried to chage gas maybe it can recover but it changed gas and stayed ERR. I didn't bother to check for the asc. depth! Maybe I will take more care next time, but in this type of diving my tabels and runtime have my priorty.

James, it's true I lve my 18l but for this kind of dives I use his big brother twin 12's and a 10l stage.

regards

Pierre

[Pierre Farrugia]

Hello,

Here you should have the dive's profile. Dive was done on air and 65%, 83min Rt. Today I was amazed that the VR3 running on air and my profile from proplanner runing air and 65% finished before Vr3 by 5min altough we still did it a saftey.

[Narked@50]

Originally Posted by Mark Chase

???? My one showes 199 mins of deco at 33mins and -- at 35mins at 60m? After that You start to ascend but it all stayes blank for a long time. I only ever dived it set on Air to 60m once and I was down between 60 and 65 for 40mins. It didnt like it at all . Now I just use it on gauge mode.

ATB

Mark Chase

Hi Mark

My Vytec shows 199 mins of "no deco" but only 99 mins of "ascent" time when you try it. Posibly a software upgrade/glitch?

James

[Narked@50]

Originally Posted by Pierre Farrugia

Hello all,

just came from my dive and ended up bending my vytec! the problem was that I was on a runtime and going up to 15m stop and change gas. The Vytec wanted me to stay at 17m of which i ahd already stopped at 18m. The Vytec kept bleeping and pinting down to descent, but as It still was going time and depth, no problem. then it turned to (--), but to tell you the truth I didn't change gas when it was (--) and then changed to ERR. then I tried to chage gas maybe it can recover but it changed gas and stayed ERR. I didn't bother to check for the asc. depth! Maybe I will take more care next time, but in this type of diving my tabels and runtime have my priorty.

James, it's true I lve my 18l but for this kind of dives I use his big brother twin 12's and a 10l stage.

regards

Pierre

Glad you took the larger cylinders, I knew you would. The profile looks suspiciously like HMS Stubborn? is it? Naughty, naughty for bending your computer, thats the trouble with tables, they will do that to a computer, two computers are ok though, you just wait for the second to catch up.

Glad you had a good dive.

James

[Dr Stevil]

Just an aside...
there are probably some who might want to follow this thread but hit a wall with the unexplained abbreviations eg VPM-B (wazzat ???) I've heard of RGBM but what's RGBM100 ?

Mark, a very well written piece, but maybe there's call for an intro to the intro piece?

[Narked@50]

Originally Posted by Janos

James, do you have a link?

No rush as I'm off diving for the next two days [Insert smug looking smiley here but I haven't figured out how they work on the new system]

Laters,
Janos

No, I actualy paid for it (bloody hell) when I bought the download manager kit. If you want a copy and are going to the Anglesey Gig I will give you it there, just let me know.

James