you could check the following: ;0:[X+"(
Qis/'9a
- if the surface/element tilt is too large bm-&H
o Yrg;]H
- enough analysis rays used? Dq9*il;'
Kr@6m80E5
- have you used Coherent Data option under Detector setting. uwWKsZ4:ij
,^&amWey
Someone above was right about that the non-sequential mode only uses geometric rays but you could see inteference fringes using Coherent Data.