you could check the following: tP:xx2N_
6g.@I!j E
- if the surface/element tilt is too large 19=Dd#Nf
~z'0~3
- enough analysis rays used? Tl1?5
&G"]v]V
- have you used Coherent Data option under Detector setting. 9<YB&:<
3{_+dE"9
Someone above was right about that the non-sequential mode only uses geometric rays but you could see inteference fringes using Coherent Data.