you could check the following: 3-=f@uH!
B0M(&)!%
- if the surface/element tilt is too large ~cf*Oq
0I v(ioB=
- enough analysis rays used? *+i1m`6Q
3 P=I)q
- have you used Coherent Data option under Detector setting. yv;KKQ
JI3x^[(Z
Someone above was right about that the non-sequential mode only uses geometric rays but you could see inteference fringes using Coherent Data.