Meg min. SP at altitude

tibby

A tiny nuisance on APECS 2.5 megs when diving at altitude is that, for good safety reasons, the APECS will maintain a .20 set point even in manual mode. This works great at sea level but I live at 4200ft.
At this altitude, after doing proper calibrations (after setting and saving the proper altitude) the ambient air has a PO2 of .18. Again this is ok from a calibration point of view but it also means that I always need to make sure I maintain a richer atmosphere inside the loop in order to prevent the solenoid from firing all the time (even in MAN SP) which is not hard to do but it's anoying that I always have to worry about it. I decided to not turn on the unit until at the dive site to prevent it from injecting O2 during transport. This of course means more pos/neg checks...hey, maybe it's a good thing!
I'm thinking it would be nice if I could adjust that minimum injection SP in manual mode to .18 so if ISC is tuned in..how about it? Can this be done with a software firmware change?
Tibby

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Does the voice of reason change when you add helium to the mix?...hmm