If you are interested, you might try reading this book. http://www.amazon.com/gp/offer-listing/1905492073/ref=dp_olp_new?ie=UTF8&condition=new It explains a lot and might give you some insight as to what the computer is telling you.
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So, based on the screen of the Cobra 3, if I accidentally enter deco mode and I am at 75 feet, and the computer displays a ceiling of 30 feet, and an ascent time of 10 minutes, and if it takes me two minutes to reach the ceiling of 30 feet, and my ascent time now says 8 minutes (because I just traveled up for two minutes), does that now mean that I have to stay at this ceiling of 30 feet for the 8 minutes (meaning that my ascent time becomes, or equals, my deco countdown time to stay at the ceiling for decompresion)?
So, based on DivePal (which I have been using) and Alberto: when you enter deco mode, the remaining air time which is displayed on the left is replaced with the ceiling, which I need to go up to. And, the no deco time on the right is replaced with total ascent time. There is no specific deco countdown when you arrive at each deco stop.
Another question, assuming I have only one deco stop: does the Cobra 3 display the total ascent time from where you are until you reach the surface, or where you are until you have traveled up to the ceiling and completed your deco time? (you all are conflicting on this point). Does it incorporate the amount of time that will be necessary to stay at the mandatory safety stop? I understand what the arrows are telling you (up means go up to the ceiling, up and down mean stay where you are, and down arrow with "Er" means that you went above your ceiling and need to go beneath it immediately). I have noticed that when using the computer in the simulator, as I am traveling up to the ceiling, the ASC time decreases (probably because I am decompressing on the way to the ceiling), but then I wait at the ceiling for the ascent time to become zero, indicating that I am supposed to wait for ASC time to become zero at the ceiling (therefore it does not take into consideration the time to get to and wait at the mandatory safety stop, or the time to get to the surface). What if there are multiple deco stops, how long will I know to wait - simply rely on the arrows?
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oh !Deco = Technical. Don't you french people know that!
A mandatory safety stop is usually called a "deco stop" .........Does it incorporate the amount of time that will be necessary to stay at the mandatory safety stop? .....
The definition of TAT (Total Ascent Time) is the time it takes to reach the surface from "where you are at any given point" and includes vertical travel time and deco stop time(s)......assuming I have only one deco stop: does the Cobra 3 display the total ascent time from where you are until you reach the surface, or where you are until you have traveled up to the ceiling and completed your deco time? (you all are conflicting on this point). Does it incorporate the amount of time that will be necessary to stay at the mandatory safety stop? ......
for french divers, deco is not technical, it's normal. :blinking:
technical begins at 40m and nitrox/O² pony for decompression.
A mandatory safety stop is usually called a "deco stop" ....
This tread reminds me of an incident last year when a recreational diver asked me the same question to "extend" his knowledge. His words "I want to get a better understanding of deco and how my computer work. I have no intention of going into deco....." Only to find out the next week that he got bent on deco dive.