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Computers & Dive Timers: Discuss Vytec DS question in the Dive Kit and Equipment forums: Hi everyone On sunday me and my buddy did a dive to 35m, we were both on air and both ...

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Old 30-08-07, 08:41 PM
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Vytec DS question
Hi everyone

On sunday me and my buddy did a dive to 35m, we were both on air and both using the new vytec DS, the only difference is his was set on air mode and mine was set to 21% nitrox.

He had 7 mins more deco than me, surely the mode cant under (or over) estimate the deco by this much, can it ??

Cheers

Adam
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Old 30-08-07, 08:51 PM
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Now that is just completely illogical

I always dive my computer on EAN, just 21% for air. Were your settings the same ? RGBM at x%, Deep stops, P0/1 etc ?
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Old 30-08-07, 08:55 PM
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Quote:
Originally Posted by Sixsquid
Now that is just completely illogical

I always dive my computer on EAN, just 21% for air. Were your settings the same ? RGBM at x%, Deep stops, P0/1 etc ?
Yep...
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Old 30-08-07, 09:07 PM
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Quote:
Originally Posted by Twinsetmad
Yep...
Very disturbing " Does not compute" {brain goes into melt down}

Mind you, I found a strange thing on my Vytec DS. When you set the ppO2 it gives you an incorrect depth. It's in the ballpark but seems unable to perform a basic simple calculation

Example ( and how I found it) : PPo2 set to 1.4 diving on 28% Max depth = 38.6 Hey ! that's 1.4m I'm missing !
ppO2 set to 1.6 on 50% MOD = 21.5m, not 22

I can only conclude there are some fractions it's taking into account but Suunto DM won't use fractions on weight. It always rounds up or down, even if x.5kg
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Old 30-08-07, 09:53 PM
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Everything was set the same...... could account for the massive headaches i've been getting after nitrox dives??
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Old 30-08-07, 09:59 PM
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In Nitrox mode the Suunto calculates some things on the O2 percentage plus 1%. Like maximum depth. Perhaps it's also affected the deco time? Sounds unlikely though.

Most likely you both had different profiles. Even sticking close together you would be at different depths for different amounts of time......
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Old 30-08-07, 09:59 PM
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did you have any previous diving within the last couple of days ?

and you say you didnt have its set with the plusses for a more conservative

profile?

i always dive my vytec +1 and it usualy knocks a few extra minutes off to be more

conservative!

very weird them being so far out !
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Old 30-08-07, 10:28 PM
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have any of you got access to a spare computer?

if so it would be interesting if one of you wore both computers so you could ensure it was the same profile.
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Old 30-08-07, 11:17 PM
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Come to think of it I think my buddy dived the day before which would explain it, i will ask him.

cheers everyone


Adam
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Old 30-08-07, 11:25 PM
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Quote:
Originally Posted by adamr
Come to think of it I think my buddy dived the day before which would explain it, i will ask him.

cheers everyone


Adam
yep will make a difference if his comp still has a no fly countdown!!
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