you could check the following: !.3R~0b
WGh. ;-
- if the surface/element tilt is too large U~*c#U"bh
pd4cg?K
- enough analysis rays used? F<Hqo>G
.!(,$'(@=
- have you used Coherent Data option under Detector setting. L`UG=7r q
{)V? R
Someone above was right about that the non-sequential mode only uses geometric rays but you could see inteference fringes using Coherent Data.