A masking window having radius r’ is displayed.
Select “Window” in the “Window/Mask”frame;
position the cursor at the center of the desired
masking window; then click the left mouse-button.
Move the cursor to set the inner radius r; then click
the left mouse button.
The circle having radius r is erased. A ring-type
masking window is specified. Repeat this
procedure as many times as necessar y.
r
■
Close
The current masking window is erased, or canceled.
Click on the Close button in the FFT Window.
When this function is performed, the masking window on the Display Window
is still displayed, but the masking window applied to the spot image in the
computer memory is erased.
In order to display the spot image to which a masking window is not applied,
operate Display FFT.
■
Open
A masking window saved on the disk is loaded into the computer memory.
1.
Display a spot image (diffraction pattern) and click on the Open button in the
FFT Window.
2.
Enter the file name to be loaded using the keyboard; and click on the Load
button.
Then the file is loaded and the masking window is displayed on the spot image.
If the sizes of the displayed spot image and the loaded masking window are
different (for instance, the displayed spot image is 128
×
128, and the loading
masking-window is 512
×
512), it causes an error.
TMPM5200-2
6-53
