FEI Quanta FEG 250, User'S Operation Manual

Page: 209 / 228

System Options: Quanta Morphologi
9-61
MAPPING TOOL
It is located in Stage menu / Mapping tool or in Windows: Start /
Programs / FEI Company / Applications / Mapping .
Due to statistical reasons, a sufficient number of particles should be
calculated. Therefore the Mapping tool is applied for the automatic
acquisition of user-defined number of images. Before running the
mapping tool, all parameters of the image acquisition (high voltage,
spot, dwell time, etc…) must be set in the user interface.
Note:
For low magnification images, use the Navigation Montage together
with the Sample Navigation to preview the scanning area and to see
the progress of the Mapping procedure.
Note:
Using the Mapping tool, the images are saved under conditions that
are actually preset in the UI.
The Mapping tool consists of:
Output file properties box
Path to the directory where the image dataset will be stored, Prefix of
the file name (the file name consist of the prefix plus the sequence
number in the matrix) and the
Image format is defined here. Further,
a choice of Single numbering of stored image files and/or Overwrite
existing files are available in this box.
Region properties
Number of images in X / Y will be saved in a matrix with X rows and
Y columns that is specified here. Overlap % between images can be
further preset.
Note:
Use negative overlap to ensure a space between acquired images.
Status
Progress in the image acquisition, i.e. total time required for saving
defined image dataset and time remaining to the end to the Mapping
procedure is shown here.
Switched off beam when finished check box enables to switch off
the electron beam after the image dataset saving is finished.
Note:
Due to safety reasons, the Mapping tool is preset to Stay on top .
Caution:
User Interface is active during the Mapping procedure. Any change in
the UI (high voltage, spot, magnification, free working distance, etc.)
will cause change in saving images and devaluation of the image
dataset.