help me put my computer into deco :)

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The point of this experiment has always interested me why someone would need to know this. I'll explain.

When the computer tells you to go to 20 ft for 5 minutes you will go to 20 ft for 5 minutes. Simple.

Because sometimes human error rears it's ugly head - as it occasionally does in every field of human endeavor.

It is essential that divers fully understand how their computer provides emergency decompression directions. I've seen more than my fair share of confused faces, when a diver sees the word ''ceiling' on their computer. I even seen a Divemaster 'abort the dive' and return to the boat because she assumed her computer had failed. :shakehead: She came to me on the boat and mentioned it.....30 seconds later she was breathing O2 and being monitered as a precaution...
 
Here another example of a scuba diving simulator (eDiving) that not only simulates physics and physiology of a diver, but also simulates real dive computers (36 so far).

Alberto (aka eDiver)

Thanks Alberto... I couldn't find the link to your site, otherwise I would have posted that.

Just out of interest, does your simulator include decompression?
 
.... I couldn't find the link to your site....
It is in my signature ;)


....Just out of interest, does your simulator include decompression?
Of course!
We are using Buhlmann ZH-L16C (with GF factor for tech diving). And I am planning to add VPM-B ... once I get some free time :depressed:

Additionally, you can equip your virtual diver with tech diving gear: either Doubles + stage bottles or a real eCCR (Titan CCR + Predator) and do deep dives in real places (the deepest dive site so far is "The Choke" in La Jolla Canyon) - including a cave (Emergence du Ressel - in France)

Alberto (aka eDiver)
 
Perhaps the simplest way of all is to find a dive shop that has a repair facility. The will often have a device called a 'pressure pot'. This is simply a container that can be filled with water. It has a connection to allow a pressuring device such as a scuba tank to be connected. The lid on the pot is thick Plexiglas that you can see through. The computer itself is under the water in the pot on a pedestal so you can see the face. You then pressurize the pot by controlling the flow of air from the tank into the pot until you reach the desired 'depth' you want for the time you want. You can depressurize at whatever rate you want (to simulate rapid ascents etc). You just leave the computer under pressure for the desired time until deco is reached, then start ascent to simulate deco stops.

I use this method when I teach computer classes (sometimes with two or three in it). One of the most common questions students pose is how to read the computer to safely get out of accidental deco scenarios.
 
haha good answers so far....i like the idea of putting it on a line, and switching with a buddy who dives before is also a good idea (thats what i was looking for) i know the class is probably the best option but to be honest i dont think im ready for it nor do i need it yet. I am more interested in knowing what happens simply because i got a new BIG tank and now am more limited by NDL than backgas so i thought it would be a good thing to know incase one day i accidentally screwed up and stayed too long.
Any more thoughts and ideas are welcome

As a thought, instead of diving your computer to the last minute of NDL, have you considered using your Nitrox cert?

If you are pushing Nitrox to its NDL limits consider shallower dives or a deco course so you understand the risks associated with pushing the limits.
 
I think it is a very smart idea to experiment to find out what the computer looks like and acts like underwater. Remember, when it does "go off" (into deco) you will probably be a little deep, a little stressed, a little low on air and expereincing what it looks like when the computer goes into deco mode underwater should be useful.

It should be pretty easy to do, by simply doing two consecutive, deeper dives and having it set for air for both, It should not be too hard to throw it into deco, without a lot of "games".

I would recommend that you do this on a commercial dive boat, don't tell anyone what you are doing and then deliberately blow off a portion of the "required" deco on the last dive. When you get back up on the boat, grab a soda and then casually tell the dive master "my fingers are numb and I can't get my computer to stop flashing at me, can you help?""" :confused::confused::confused:

Make those guys EARN their tips.:rofl3::rofl3::rofl3:
 
I would recommend that you do this on a commercial dive boat, don't tell anyone what you are doing and then deliberately blow off a portion of the "required" deco on the last dive. When you get back up on the boat, grab a soda and then casually tell the dive master "my fingers are numb and I can't get my computer to stop flashing at me, can you help?""" :confused::confused::confused:

Make those guys EARN their tips.:rofl3::rofl3::rofl3:

ha ha.... if that was my dive boat...he'd have the soda shaken up and inserted rectally for doing that.... then he'd really get to appreciate some bubble related trauma.. :rofl3::rofl3::rofl3:
 
In the OP's first post, he mentioned that he would be doing the dive with EAN36 following tables. If he stuck within what his predive planning entailed using tables during the whole dive, and just observed what his computer(set on air) was telling him, that is kinda like using another computer to monitor is dive while observing what the test computer is telling him.

I don't see much wrong with this situation, as long as buddy is fully aware of the intentions of the dive. Heck, it might even give two divers the opportunity to learn a little more about their computers.
 
To be honest, there isn't much to learn from simply seeing the deco screen on a dive. Yes, it's better than never seeing it - but you won't learn to 'predict' your deco from that single experience.

I've met quite a few recreational divers who have had some minor 'excursions' into deco mode and become absolutely convinced that "a few minutes of deco was no biggy..and it would clear on ascent" etc etc. It led to very sloppy and dangerous dive practices, and showed no understanding, experience or knowledge of how and why decompression accumulates and/or clears.

The deco given by any particular dive computer will accumulate and clear differently depending on the dive profile and previous dives. There is only so much that a diver can learn from the 'experiment' described in this thread.
 

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