5 Commissioning and First Operating Steps | 5.5 Modifying Gun Parameters
ZEISS
5.4.8 Saving the Image
Procedure
1. In the SEM Controls panel, select the
Scanning
tab.
2. Select
Freeze on = End Frame
from the drop-
down list.
3. Click
Freeze
.
à
A red dot at the right bottom of the
Image Area
indicates that the image is frozen.
4. From the
Menu Bar
, select
File > Save Image
.
à
The
Export TIFF
dialog is displayed.
5. To change the save path, click
Change Directory
.
à
A file explorer window is displayed.
6. To confirm the selected path, click
Select Folder
.
7. Enter the filename in the
Filename
input field.
8. Click
Save <file name>.tif
.
9. To continue imaging, click
Unfreeze
in the
Scanning
tab.
5.5 Modifying Gun Parameters
5.5.1 Selecting the Gun Mode
The microscope can operate in different gun modes:
§
Imaging
§
Analytic
Imaging Gun Mode
In Imaging gun mode, the temperature of the Schottky emitter and the extraction voltage are re-
duced in comparison to the Analytic gun mode. This leads to a reduction of the energy spread of
the primary electrons.
Imaging gun mode is suitable for lower probe currents. Imaging gun mode is especially useful at
low kV to reduce chromatic aberration and to achieve a better resolution.
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Instruction Manual ZEISS SIGMA series | en-US | Rev. 7 | 352102-9344-006