DYN and FDY Files
 
DYN files contain simulating diffraction amplitudes and phases from dynamical electron diffraction. When a DYN file, such as that on the right, is openned by VEC in graphic mode, the simulating dynamical electron diffraction pattern will be displayed as below.

An FDY file consists of a number of DYN files,  which correspond to different sample thickness,  but for all other conditions they are the same.

YBaCuO.dyn
PRIVATE     The item must be at the beginning of the file
 CONV       1
 TYPE       3   0
 RECI        0.00    1.00   -3.01    0.00    1.00
 FFT3         128      32     256     256 
*EOS

CELL DIMension  a         b         c      alpha     beta      gamma
 CELL        19.6200   26.0400    3.7600   90.0000  116.5000   90.0000
*EOS

SYMMETRY
 SGSY     8   1   c 2 m m
 SYOP      1 0 0 0.0000000     0 1 0 0.0000000     0 0 1 0.0000000
 SYOP     -1 0 0 0.0000000     0 1 0 0.0000000     0 0 1 0.0000000
 SYOP      1 0 0 0.0000000     0-1 0 0.0000000     0 0 1 0.0000000
 SYOP     -1 0 0 0.0000000     0-1 0 0.0000000     0 0 1 0.0000000
 SYOP      1 0 0 0.5000000     0 1 0 0.5000000     0 0 1 0.0000000
 SYOP     -1 0 0 0.5000000     0 1 0 0.5000000     0 0 1 0.0000000
 SYOP      1 0 0 0.5000000     0-1 0 0.5000000     0 0 1 0.0000000
 SYOP     -1 0 0 0.5000000     0-1 0 0.5000000     0 0 1 0.0000000
*EOS

HKL          H    K    L    F(calc)     Phase
 CALC        0    0    0   9979.016   357.172     0.000
 CALC        0    0    1      7.585    85.651     0.000
  .                .
  .                .
  .                .

 CALC        0    2   10     19.483   259.655     0.000
*EOS

END