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Unrealistic CNS values
Posted by: mnk ()
Date: January 25, 2019 11:15AM

I have noticed that my OSTC 4, #474 with 1.3.9 must have a software bug.
A dive with a surface interval of up to 24 hours always has some CNS value between 300 - 900%! The way I dive usully gives a CNS value between 15 - 25%. But the OSTC only gives normal values after a >24h dive break.
Am I alone with it?

OSTC4 #474

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Re: Unrealistic CNS values
Posted by: Arno ()
Date: January 28, 2019 09:13AM

I also see strange values sometimes however not every time. Last dive I can find is from late december where I did 2 dives; dive 1 ended in CNS 13, where dive 2 started with a CNS of 347 and after 26 seconds it went back to 3.

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Re: Unrealistic CNS values
Posted by: mnk ()
Date: January 28, 2019 09:43AM

That's exactly what I've been noticing. Always with a 2nd dive with a distance of less than 24h from the previous one the CNS values at the beginning of several 100% are not correct at all. Each time the CNS value of the 2nd dive comes to a normal value after a time of 20-30 seconds.

People, please check the CNS value output by the OSTC4 at the beginning of each repetitiv dive with surface interval less then 24h. We are hardly the only ones!

OSTC4 #474

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Re: Unrealistic CNS values
Posted by: Arno ()
Date: January 28, 2019 02:27PM

Checking again and indeed....
Last October I had a week of diving with multiple dives, there's however something strange, since the very first dive in the sequence also begins high despite having an interval of about a week:

23-09-18 CNS start 0, end 7
01-10-18 CNS start 215, after 26 seconds 2, end 16
01-10-18 CNS start 999, after 26 seconds 16, end 30
02-10-18 CNS start 52, after 26 seconds 0, end 2
03-10-18 CNS start 0, end 11
03-10-18 CNS start 249, after 26 seconds 2, end 15
04-10-18 CNS start 477, after 26 seconds 4, end 16
04-10-18 CNS start 476, after 26 seconds 4, end 17
05-10-18 no CNS information available

Also on 24-10-18 after an interval of 10 days, it starts with 608 and after 26 seconds it's 6 and 10 at the end of dive.

All above information is from the Diving Log application into which I directly import my dive computer.

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Re: Unrealistic CNS values
Posted by: heinrichsweikamp ()
Date: March 22, 2019 09:16AM

Hi,

I think I talked with user "mnk" last weekend about this bug and this has been fixed a few minutes ago: [bitbucket.org]

Another step forward to the new stable...

regards,
Matthias

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Re: Unrealistic CNS values
Posted by: swissdiving ()
Date: March 22, 2019 04:28PM

thumbs up

Cheers,

Hansjoerg

--> 2N ¦ 2201 / 3892
--> OSTC4 ¦ 257 / 392 / 424

RTFM

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Re: Unrealistic CNS values
Posted by: mnk ()
Date: March 23, 2019 05:25PM

Vielen Dank Matthias.

Ja, das war ich (mnk) am Tec Event am Thunersee mit Laptop und OSTC4.

Gruss
Martin

OSTC4 #474

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