you could check the following: SccaX
P
]O\m(of
R
- if the surface/element tilt is too large 1=9M@r~ ^
#RyX}t X,
- enough analysis rays used? X}-)io
RCgn\
- have you used Coherent Data option under Detector setting. M^e;WY@ D
9q4%s?)j
Someone above was right about that the non-sequential mode only uses geometric rays but you could see inteference fringes using Coherent Data.