you could check the following: 2 g)W-M
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- if the surface/element tilt is too large c[/h7!/aH
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- enough analysis rays used? 3Pb]Of#
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- have you used Coherent Data option under Detector setting. M.h)]S>
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Someone above was right about that the non-sequential mode only uses geometric rays but you could see inteference fringes using Coherent Data.