Oceanic DSAT or PZ+ on backup computer

[jaseUK666]

It's not as simple as saying that DSAT is more liberal though. It's designed for shallow, short dives so it is for them, for deeper stuff it gets very conservative.

Have a look at this:
A sense of algorithm

Both the Shearwater and the PZ+ are Buhlmann with conservatism added, so I'd expect them to be reasonably consistent with each other regardless of profile. This is what I've found up to a point. Rack up too much deco and the oceanic goes conservative

 

[scubadada]

Hi @jaseUK666

To be fair, DSAT is designed for repetitive dives within recreational limits. I have about 80 light deco dives on DSAT (<15 min). The deco time and depth run very similar to my Buhlmann computers, Nitek Q and then Teric, running 75/95. Do you have such data or are you entirely relying on the 10 year old "article" you cite?

 

[jaseUK666]

I tried it in DSAT mode once. Think I ended up bending it. That was enough for me.

Not sure what the age of the article has to do with anything. Very little has changed in this area in years. I was using GFs to plan dives 20 years ago, we just didn't have dive computers that could handle it back then.

 

[scubadada]

I tried it in DSAT mode once. Think I ended up bending it. That was enough for me.

Not sure what the age of the article has to do with anything. Very little has changed in this area in years. I was using GFs to plan dives 20 years ago, we just didn't have dive computers that could handle it back then.

Perhaps you could share that one dive profile. You're correct, DSAT has been available since 1987, well before Buhlmann ZH-L16C with GF, perhaps by about 20 years

 

[tursiops]

Rack up too much deco and the oceanic goes conservative

You mean DSAT goes conservative.

 

[outofofficebrb]

Within recreational diving after repetitive diving, my longest run was 56 dives, DSAT backing up Shearwater was not an issue. Make sure DSAT doesn’t have CF (conservative factor) on. I average around 30 repetitive dives at a time on average and my sample set has been 260 dives

 

[jaseUK666]

You mean DSAT goes conservative.

No, PZ+ does too

 

[tursiops]

No, PZ+ does too

Not sure why you say this.

 

[jaseUK666]

Not sure why you say this.

Because of dives like this. OSTC clears when the red ceiling went away. Oceanic didn't clear until 3m, almost twice as many stops.

Up until a certain point, it's more conservative by a couple of minutes, so I was quite surprised.

 

[jaseUK666]

Perhaps you could share that one dive profile. You're correct, DSAT has been available since 1987, well before Buhlmann ZH-L16C with GF, perhaps by about 20 years

It was a while ago. I might take it in again sometime, though based.on yesterday's conditions, it's going to be a while until I do a deepish dive. The sea was like soup.