you could check the following: L/ L#[
\9HpbCHr
- if the surface/element tilt is too large Dno]N
Vd+qi~kA
- enough analysis rays used? /+V}.
csh@C
ckC8
- have you used Coherent Data option under Detector setting. _f5>r (1Q
=`MxgK +
Someone above was right about that the non-sequential mode only uses geometric rays but you could see inteference fringes using Coherent Data.