VR3 - Diver on the line - Variable ceiling

[asa13]

[quote=SimonK;685532]

Originally Posted by asa13

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The other possible reason might be related to the fact that that the VR3's deep stops have always been somewhat weird, with little explanation given anywhere as to how they came up with them. So since the deep stops are not really computed according to the Buhlmann algorithm, the deep stops may be stationary at the arbitrary depths they kick in, and then when we get shallower where the computer really does start following a Buhlmann profile, the man suddenly truly does allow for continuous deco.

quote]

I belive this is the reason. The deep stops are basicaly Pyle stops, chosen by some simple maths based on bottom depth and first deco stop (and non the worse for that).

I suspect that the upgrade you are after already exists, its called VPM!!

Simon

...or pseudo VPM. It doesn't seem to follow profiles too similar to V-Planner, and it's not clear to me that the computer really is using VPM-B. Cedric Verdier and others haven't been too mipressed with its massive deviations from what V-Planner tables would suggest.

Mark, thanks for the info. My longest deco on the unit was about 75 minutes, on a 75M dive, and I couldnt get it to do a sensible continuous deco until really shallow. Seems that the longer the dive the more the "cont deco" kicks in. I agree that this is more of a toy than a useful feature, at least in the VR3 implementation.

[Mark Chase]

[quote=asa13;686032]

Originally Posted by SimonK

...or pseudo VPM. It doesn't seem to follow profiles too similar to V-Planner, and it's not clear to me that the computer really is using VPM-B. Cedric Verdier and others haven't been too mipressed with its massive deviations from what V-Planner tables would suggest.

Mark, thanks for the info. My longest deco on the unit was about 75 minutes, on a 75M dive, and I couldnt get it to do a sensible continuous deco until really shallow. Seems that the longer the dive the more the "cont deco" kicks in. I agree that this is more of a toy than a useful feature, at least in the VR3 implementation.

Try running the VR3 VPM against V planner on level two VPMBE. I am told (By Dr JM)that is much closer to the VR3's settings.


ATB

Mark Chase