you could check the following: (rHS2SA\5
E,/<;
- if the surface/element tilt is too large W@vt6v
8)wxc1
- enough analysis rays used? @]r l2Qqe
*K<|E15 ,
- have you used Coherent Data option under Detector setting. 0Q]ZS
{c;][>l
Someone above was right about that the non-sequential mode only uses geometric rays but you could see inteference fringes using Coherent Data.