Hi all,
I was asked about CCD's. In particular, it was a 'which type when' discussion.
In literature there are generally three characteristics of CCDs: Rotatable, Orthogonal and 'On-Face' (more a setting than a characteristic). In JMP, a user first can choose between different design types. In the next step, they can then modify the axial value and others.
1. Question: If a user for example chose a "CCD-Orthogonal" - why would they then want to choose a 'Rotatable' axial value?
2. Question: Why do the axial values of "Rotatable", "Orthogonal" change, depending on which design type was chosen in the first place (yellow boxes in graph below)?
Thanks for helping me understand 
Best regards from Heidelberg,
Florian
