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I change the battery and put a "Duracell" Battery...But compass is still not functionning.
I reinstall de 1.53 Fr version but no change...

Any help?

Hello Mathias,
I have just received my third OSTC..
I lost my OSTC 2
I have still my OSTC Sport 12085 and
I buy a new one 21357 for my wife.
This new one comes with the firmware 10.53 (English /german).
I discover the menu, use the compas after calibrate it..it was very sensible... but the compass ...

Hello, I have just update my OSTC sport with the new release.
But My Battery was at 72% juste before the update, now it is 100% !

I think it is a recurrent problem with the update...

Any solution in the future?

Have a nice day.

After my 100th dive , I can not access the logbook anymore!?
I was able to download my latest dives with subsurface but the logbook on the OSTC is no more reachable....
I put the new 10.38 version but no change....

Thanks Matthias,

Yes, the problem is that the drop off is very rapid.
From logbook :

23Th dive : voltage at end 1,41V
24th dive : voltage at end 1,30v
25th dive : voltage at end 1,00v

The limit for that kind of battery could be 1,35v if it is below change the battery div
Theire are not that ...

Hello Matthias,

I dive with my OSTC Sport.

After the original battery I used a AA 1,5V battery from energizer "Ultimate lithium".
I did 25 dives with this battery (starting in may with dives at 10°C and ending now with dives at 20°C).

My comment is about the battery indicator.
for my 18th dive ...

Hello Matthias,
On my previous OSTC2N I had a graphical ascend rate speed very usefull . Do you have the same on the OSTC sport?

Thanks for these info.

I have find in a book (Nitrox Trimix) explanation about GF Low and GF High. I have modify the CF 33 (GF High) with 80 instead of 90. It's still a trial and error process.
After some dives I will test CF 11 and CF12 with 120/80 .

Tx;)

MAES Alain

OSTC 2N 2537

I have just dive with my new OSTC 2N. I had previously a STINGER SUUNTO and a GALLILEO UWATEC. On both of them I can use the computer in a more conservative mode than the normal one.
So these computers take my age (52) and my weight (102Kg) into account by amplifiyng the time during dive stops ...