OC1 loosing PO2 Settings

[BjFaeTorphins]

I will point out up front that i've not actually got my OC1 wet yet.

I've tried setting FO2 for TMT 1. i.e. the %O2 for tank 1 to 30%.

My TMT is not connected to a tank so the pressure setting is 0 and flashing.

After a while when I go back in to look at this setting F02 has gone back to "Air".

I've tried DFLT ON and OFF. Makes no difference.

How and why does this happen?

 

[fppf]

If you don't actually dive the computer within a set amount of time it will exit dive mode. When this happens and it goes back into dive mode for the first time it will use default settings, air.

If you set the mix then dive it will remember that setting for that series of dives.

The DFLT 50 setting will make the computer default to 50% nitrox at the end of every dive.