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I am using an OSTC MK2 and I synch it with Subsurface on a MacBook Pro.
When I connected it the last time it changed my firs Gas to Nx83 and the Standard for Gas 1 was changed to 70/2.
All other gases still show Standard as 21/0

Does anybody have a clue who happened and how I can change it back ?

Thanks
Axel

Hi,

a Reset Gas, CF & Deco from the Reset menu will also reset the default gases. "OSTC Config" for Windows: https://www.angermayr.eu/index.php/de/softw-de can also setup the standard gases in the 2N software.

Regards,
Matthias

Thanks, that did the trick