CCR900

I should have known better than to open my mouth!!

What I was trying to say was, you calibrate your primary as you would say the Vision and then as an added support you take each value (knowning that you have not changed the ambient pressure nor cells) and set that value against the equal and opposite display on the other handset. The passive readings are dumb, they are not involved in any computed control of set point.

I must point out that they are no different from say your KISS handset, so you are welcome to calibrate on air on the day before but might I suggest you readings could be slightly different with your primary during your dive.

The idea is to give you another opportunity at looking at your PO2.

F