Setpoint auto switch ?

CCR900

I seem to be drifting from the fold here by daring to question the Vision's HUD. I like the the machine and have used it more than once. To answer your comments in turn.

• I believe there was an option to buy the Vision with no deco software, I do not know if it is still available.
• GF factor ceiling may mean your ceiling can be much shallower than 6m (I do not deco above 6m) therefore your ascent above the auto switch trigger depth is possible without any flashing red lights
• Deco violation is also an audible alarm (as well as the HUD warning) is this true?
• It will only down arrow on your handset when you violate the ceiling, read my first comment.
• As for urban myth, its probably best to check with Martin Parker.

All I wanted to say was check your handset once in a while, in my humble opinion the HUD doesn't give you enough data to run the dive safely on its own, that's all.

F

PeteS

Feel free to question away.

You can have the Vision with Timer, Nitrox Deco, or Trimix Deco. They all look after the PPO2, but only Nitrox and Trimix version do deco.

Absolutely correct. But if the set point changes, the HUD flashes. Your Vision deco is always based upon the gas in the loop, not the desired set point. This is only an issue if you have your computer set to a different PPO2 than the current Loop set point. As soon as you do that, your deco status is unknown.

Audible alarm and flashing HUD and handset display. But only if you bought a version with deco on it!

Correct. When else should it down arrow?

They don't comment, so do you have any other evidence that it's not an urban myth?

The HUD doesn't give you enough actual data, that is on the display, but it sure tells you something is wrong. Flashing lights, buzzer. So you check the display.

Of course, if you have a timer version of the Vision and you just follow the green light and ignore your computer (VR3, Explorer, et al), or tables, you probably deserve all you get.

__________________
Pete S.

http://www.steggle.co.nz

Every silver lining has a cloud

CCR900

"But if the set point changes, the HUD flashes"

Try switching from 1.3 to 0.70 and watch your HUD you might be be suprised what doesn't happens.

As for the audio alarm, I hope you are not correct. I would reserve audio alarms (where everyone gets to hear) to life threatening situations, I do not consider broken ceilings as such a situation that all and sundry need to know.

F

Beanie

Funny I do, any alarm should have a beep, after all, all the beep and HUD really does is say LOOK AT HANDSET!!

__________________
Beanie
Gallery Admin & Library Assistant.
www.outlawdivers.org.uk
www.beandiving.co.uk
www.beanengineering.co.uk

caveseeker7

I don't dive a Vision, but asuming that the electronics pretty much keep the chosen setpoint of 1.3 ata, and then change to 0.7 ata, wouldn't the HUD signal that the loop content is higher than 0.7 ata?

__________________
Cheers
Stefan



"Political Correctness is a doctrine, fostered by a delusional, illogical minority,
and rabidly promoted by an unscrupulous mainstream media,
which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.!"

desperation99

not if the actual PO2 is higher than setpoint but will flash green lights on the HUD if the actual PO2 is lower than setpoint by 0.20 bar or more i.e when you change set point from low to high.

if your setpoint changes to 0.7 surely you would notice the solenoid not firing and the decrease in loop volume?

hope this helps

matt

CCR900

Decrease in loop volume , ADV?
Waiting to hear the solenoid, not reliable if you dive with OC chaps

Checking the hand set every so often is probably best. (That's why I said don't trust the HUD!)

F