MacDive Forums

First, the issue:
At the end of my most recent dive, the raw data listed in MacDive for my dive shows the last bunch of data samples as all having the same pressure reading. This would be fine if I were on the surface, but it looks like I was at a safety stop at the time and, well, my SAC rate is not that good.

Example Data:

420, 46.56, 2216.00, (null)
435, 38.56, 2209.00, (null)
450, 30.81, 2203.00, ascent_rate
465, 24.00, 2198.00, (null)
480, 19.06, 2197.00, (null)
495, 17.87, 2197.00, (null)
510, 19.94, 2197.00, (null)
525, 20.06, 2197.00, (null)
540, 22.38, 2197.00, (null)
555, 19.62, 2197.00, ascent_rate
570, 18.87, 2197.00, (null)
585, 18.75, 2197.00, (null)
600, 18.62, 2197.00, (null)
615, 19.94, 2197.00, (null)
630, 19.19, 2197.00, (null)
645, 18.75, 2197.00, (null)
660, 16.56, 2197.00, (null)
675, 18.31, 2197.00, (null)
690, 24.44, 2197.00, (null)
705, 23.25, 2197.00, (null)
720, 16.25, 2197.00, (null)
735, 4.94, 2197.00, (null)

Note the '2197.00' over and over again. That seems wrong.

A re-download yields the same results. I tried to download the data with Oceanlog on my Windows VM, but the Oceanic software in it's current version seems 'very' buggy, and I could not get at the data I was looking to compare with. This particular dive is a nitrox 32 dive as well.

I've attached a dump and a log from a 'ATOM2' version of the test tools as called out in the head of the support forums.

Attaching the output from the parsed 'universal' test application as well...

Will take a look tonight.

Oceanlog 2.3 reports exactly the same thing - 2197psi for the last chunk of the dive.

The most likely problem is that you blacked out and held your breath, and don't recall. The next version of MacDive has a fix for that..

O.k. - so either something is up with my PDC or I'm forgetting something about that dive. I just wanted to make sure that there wasn't an error in the dump/decode from the computer. Thanks for looking at it!

Yeah, it's a bit odd indeed. I'm sure you would have noticed when you were diving if it wasn't reporting the air correctly, so maybe just a firmware issue - or maybe OceanLog isn't reading something correctly off the device (which makes it hard to debug).

Just an update on this topic:

I tried several times to get OceanLog proper to download all my dive data for each dive. It does download the data, but refuses to show profiles for any of the dives, claiming it can't show dive data for dives with a "depth >= 0". I'm not sure what is going on at this point, but I did a hard reset (flush logs) on the PDC and will put a few dives on it this weekend. Hopefully no issues after this, and pressures are still recorded as usual. I'll have a go at the downloads with all the tools again and see what's what. Again, thanks for the help.

I got this error using Oceanlog 2.2. If you upgrade to 2.3 and download, it will work as expected.

But it still reports 2197 PSI.