you could check the following: oD)]4|
LR97FG
- if the surface/element tilt is too large z'YWomfZm
YM}a>o
- enough analysis rays used? Z0,jg)sA4
x-BU$bx5
- have you used Coherent Data option under Detector setting. o(*\MTt?
2S?7j[@%i`
Someone above was right about that the non-sequential mode only uses geometric rays but you could see inteference fringes using Coherent Data.