understanding dive computer

[live_2_dive]

No computer that I know of will tell you now long your surface interval HAS to be. You should know what surface interval you need from your planning.

But if you haven't done what you're supposed to and planned your dive ahead of time, most computers will let you enter a planning mode and see what your NDL's are in b/w dives for a given surface interval


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PADI Rescue/DM 09100Z7445
Dr Dive/Wet Dream/Sea Cobra/Y-Knot/H2OBelow

Diving is my passion...I live to dive!

 

[djwang2000]

If you are not an engineer or lawyer used to double speak, confusing the hell out of people terms, roundabout ways of using twenty words to say what could be said in four, or just plain enjoy seeing people in turmoil, they are an abject lesson in frustration.

I respectfully disagree with you -- the Oceanic manual has a distinct lack of words, instead opting for symbols and punctuation marks that seem to be inserted randomly and without any particular meaning . ... but you are right in that when there is actually a sentence (and I use that term lightly) it has 20 words -- too bad they are the wrong words...

 

[pixieheart1]

No computer that I know of will tell you now long your surface interval HAS to be. You should know what surface interval you need from your planning.

But if you haven't done what you're supposed to and planned your dive ahead of time, most computers will let you enter a planning mode and see what your NDL's are in b/w dives for a given surface interval


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PADI Rescue/DM 09100Z7445
Dr Dive/Wet Dream/Sea Cobra/Y-Knot/H2OBelow

Diving is my passion...I live to dive!

Thanks a bunch for your reply. I felt like I was missing a piece of the puzzle but your reply brought it all together.

 

[diverrex]

My Cobalt makes this very easy. After a dive, on the planning screen it will give you what your NDL would be at each depth in increments of 10 feet if you did the dive right then, or it allows you to enter a remaining SI time to see what the NDL's would be in say another 30, 40, 50 minutes etc.

 

[LowDrag]

Thanks for pointing out that I should read the manual. I hadnt thought to do that....geez....I have read it about a 100 times and was merely looking for an answer.....Thanks for the great advice though...genius idea

I'm with you on the "read the manual" suggestion. No chit Sherlock!!! I did the online course DiveNav suggested for my Subgear XP-10 because the "manual" was on a disk and a pain to follow. The online course gave me some really good hands on plus a visual to combine the learning.

 

[DivemasterDennis]

My computers, like most, give a pixel read out indicating nitrogen absorption. As an old school, or just old, guy, I still calculate pressure groups after surface intervals on many occasions, just to confirm computer data and residual nitrogen for planning successive dives. I think computers are terrific, but I also think divers should be able to calculate these thing from tables too. I think like all tools, not only reviewing manuals, but experience using them, will increase your proficiency and comfort with the computer.
DivemasterDennis

 

[redacted]

My computers, like most, give a pixel read out indicating nitrogen absorption. As an old school, or just old, guy, I still calculate pressure groups after surface intervals on many occasions, just to confirm computer data and residual nitrogen for planning successive dives. I think computers are terrific, but I also think divers should be able to calculate these thing from tables too. I think like all tools, not only reviewing manuals, but experience using them, will increase your proficiency and comfort with the computer.
DivemasterDennis

How do you map between calculated pressure groups and your computer's tissue loading graphic?

 

[tadawson]

I'm with you on the "read the manual" suggestion. No chit Sherlock!!! I did the online course DiveNav suggested for my Subgear XP-10 because the "manual" was on a disk and a pain to follow. The online course gave me some really good hands on plus a visual to combine the learning.

You would be amazed how many people don't think they should have to and just don't . . .

- Tim

 

[LowDrag]

You would be amazed how many people don't think they should have to and just don't . . .

- Tim

No not really...:cool2: Some just aren't that smart.

 

[Abdullah]

The Leonardo has a surface interval countdown timer on the main screen that starts ticking away when you've been at the surface a couple minutes. It doesn't plan anything, it's more of a cautionary tool to remind you before you leap into your next NDL dive. The Leonardo is a nice, easy to use, reliable computer for basic recreational diving. But, it's not designed to do detailed dive planning. Your RDP is the resource for that.