Quote: (Originally Posted by CCR900)
The 'calibration factor', on the passive, is highly complicated and would take hours to explain! Alternatively you do your cailbration on the primary see the the PO2 readings and then compare them to the passive, you then adjust the passive to the primary. You can check the cell MV reading on the passive too but its very much a manaul flight option if your HUD and hand set go bye byes.
F
P.S. All ahndsets are reading off the same three cells, so by the primary adjusting during calibration so does the passive.
Err I dont know anything about the boris but how doeas the electronic calibration of the primary set the passive cal? Its not the cells that get calibrated its the output reading. because all cells have a slightly different mv output cal is needed to bring them all into line and tell the computer that 50mv = 1bar (example)
A trim pot is just a mechanical way of doing what the computer does electronically
Dave