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Yeah. I did the same thing with my Perdix. Playing with it, while not giving you much understanding (until you read the manual), at least you know where the settings are and how to go through the various menus.

...and let's not forget what videos on u-tube can provide. As an engineer I'm pretty good at understanding technical documents but Shearwater's explanation of the tissue compartment inert gas graph left me wondering. I found Shearwater's video about the graph and watching it solidified my...

Ummm......this does not give us any confidence for your average depth and/or modified rule of 130. I simply don't understand why anyone would bother with any of this while diving, and unless you don't have access to your computer or tables to do some pre-dive planning, what's the point?

I thought you always could do a timed safety stop in OC tec mode, but you had to start a timer manually which counted up like a stop watch.

For the Apollo space missions NASA designed a special pen which would allow writing with ink in low/no gravity conditions. I believe it cost thousands of dollars to develop and produce. When the Russians were asked how they solved the problem of writing in low/no gravity environments, they said...

I know this is just the basic scuba forum but geeeesh, have some respect! Don't tell me you're just jumping in the water without 3 gases, 3 dive plans, 2 computers, tables, wet notes, and oh before I forget, TTS prominently displayed on your DC! What are you thinking? :)

Why? For newbies it's good advice because their likely to go deeper than their buddy or worse, stray and loose their buddy. As an experienced diver I would dive my buddy's computer making sure I stay close and at the same depth or slightly shallower. If I was really concerned I'd come up to 30...

Should the title of this thread be "Are dive computers making safer divers"? How easy is it to jump rows or columns with tables and end up in a lower group? Yeah, I know. You can enter the wrong gas or conservatism factor in your DC but if you're that challenged maybe diving is not for you.

@bfw your reply is a little too cynical for me and certainly did not represent what the dive shop I supported did. Once (and sometimes twice) a month they encouraged new and experienced divers to meet with them (instructors and DM's) at the local quarry for some "fun" dives. It was a chance for...

I would not add any arbitrary deep stops. My advice to you is to follow your dive computer whether it includes deep stops or not. If your DC calls for a deep stop some slower tissues will on gas more nitrogen than if you were to make a continuous ascent to the safety stop. But, so what! What...

OK. I understand what you're talking about. Once the dive computer (DC) counts the NDL time remaining to zero the DC will start calculating the time needed in minutes at the shallowest deco stop, and you are at that point making a deco dive. The DC after some short delay will then show your stop...

The Wikpedia article on ICD includes cases where gas switches were made going from helium mixtures to nitrox and vice-versa. It also talks about the specific causes of inner ear DCS and skin bends due to breathing nitrox while the skin is surrounded by a helium mix. Here is the link for your...

It does? Invalid for what?

I've read something different. ICD typically happens on ascents when divers are switching from a gas with a low N2 mix to a gas of a richer N2 mix. Here is what I've read: ICD (Isobaric Counter Diffusion) can be caused by the absorbtion of one inert gas of high solubility while another inert...

I agree that listening to your body is good advice and can prevent a lot of emergencies medical or otherwise. But, I don't know how that applies to DCS. In my understanding symptoms of DCS don't appear until a couple hours after the dive. So, for dives that don't involve grossly violating deco...

^^^ this Also with correct weighting and proper trim your SAC rate will go down.

You say that the algorithms are only greatly simplified models. Yet, ratio deco is even simpler than those algorithms that employ logarithmic equations on data to several decimal places. In the 2006 printing (the copyright is 2000) of "Doing it right: The fundamentals of better diving" on page...

If you are diving with a buddy have the buddy swim ahead of you and remove the line from each secured point keeping the line taut while you continuously reel it in while swimming back. This will help prevent reel tangles. It's not hard but takes practice.

Another issue as to why you want to immediately go horizontal at the surface is the position of the weights in the weight pockets. If the weights have moved forward in the pockets they will cause you to rotate forward. Try this: lean back, grab your weight pockets and lift them up which should...

Thanks @inquisit for posting the graph above. I'd like to point out something that is not readily apparent on the graph. For a deco dive involving decompression stops the GF (gradient factor) at the stops changes incrementally from GFLo to GFHi. At the first stop it is GFLo. At the last stop, at...