you could check the following: iCpm^ XT
($`IHKF1.l
- if the surface/element tilt is too large lHM}
E$5
@mZK[*Ak<*
- enough analysis rays used? d+)L K~
Y>aVnixx<
- have you used Coherent Data option under Detector setting. r4[=pfe25
(*r2bm2FPO
Someone above was right about that the non-sequential mode only uses geometric rays but you could see inteference fringes using Coherent Data.