Vision recommendation/upgrade idea.

what2be

Was thinking about the vision startup on my evo and it got me thinking. i think it would be very smart of them to add additional checks on the computer at startup. i for one do not have a paper checkoff list when I dive my evo, and I doubt many others do as well. What I recommend is that the startup sequence goes like this at power on..

BEFORE it goes to OPEN o2 Valve it should say "SCRUBBER PACKED?"
then OPEN O2 VALVE
then OPEN DILUENT Valve
then CHECK BAILOUT

Can anyone really explain why it says open o2 but check diluent? it makes no sense really. If your gonna open the o2, then it only reasons your need to open the diluent as well. not just check it. The only thing I thought was maybe the font they use on the display is too big and they cant fit "open Diluent valve". If thats the case, why not abbreviate it to say "Open DIL valve". These changes would take up minimal time to reprogram into the software and I think it would be a huge benefit to divers. I see in the next release they are putting volt meters readings into the computer, so they obviously want you to keep up on your battery life, but that is a huge programming change compared to what Im suggesting.

What do you others think?

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camerone

Two very common scenarios that don't require me to turn on my dil that I've used:

• Shallow water use as a pure O2 rebreather
• Offboard diluent, where I'm not using the dil in the unit at all

Yeah, I'm checking that I have something there, but I'm not planning on turning it on when I'm running like that.

It also reasons that I would "check diluent" on the unit, too, if I use the onboard diluent cylinders to verify what exactly I've loaded in to my dil cylinder as breathing gas (or non-breathing gas if it's hypoxic...) and confirm that it's lined up with what my computer and my VR3 think that I'm using for dil.

chunter

If you have been careless enough to not pack your scrubber before your final "turn on" and calibration, there are other major problems. Besides, I would hope that you would notice on your pre-breathe. My feeling is that some units have way too many checklists upon startup, and that rebreather divers should have a routine. Even checklists can become a matter of pushing buttons without really thinking if a diver is lazy. If you need a list, I recommend printing one up on wet-notes and taping it to the inside of your shell.

The only reason I can think of that it says "check diluent" instead of "Open Diluent" is that you also want to check your ADV, bailout, and manual button (I do realize that the O2 side also has a manual button, but that's the only reason I can think of for the difference).

Aloha,
Charlie

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"Foolish consistency is the hobgoblin of little minds." - Emerson

"Hobgoblin is a cool word."
- Charlie

Tino de Rijk

It is indeed limited to 16 characters.

ciao,

Tino.

what2be

Thx.

__________________
"If I die with any money at all in my bank account I know I miscalculated"

nigelh

I think the display says too much.
It should specify the actions it requires for its power up sequence.
Anything more is a waste of space and encourages the click-click-click mentality.

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nigelh

Depth-junkie

I think if you were dumb enough not to pack your scrubber, then perhaps you should think about taking up stamp collecting instead.

Besides i think the fact that it would take an age to calibrate up and a lot of 02 will be used whilst the solinoid has to fill the entire can with 02 before you get much movement on the cells would be a bit of a give away something was not right.

ATB
Gareth