you could check the following: m#i4_F=^b
WPAUY<6f
- if the surface/element tilt is too large R9Wr?
5S_fvW;
- enough analysis rays used? s6Dkh}:d
:zq Un&k&
- have you used Coherent Data option under Detector setting. %{pjC7j#
|K;9b-\
Someone above was right about that the non-sequential mode only uses geometric rays but you could see inteference fringes using Coherent Data.