JEOL JSPM-5200 Instructions Manual page 147

５ MEASUREMENT OPERATION
Loop Gain
Click on the
pull-down menu.
The setting determines the gain of the feedback circuit. The larger the set value is,
the higher the response gain becomes, thus obtaining a good image from an uneven
specimen surface, but the feedback circuit easily oscillates.
Source (S election of the acquired image type)
• W
hen you observe a topography (shape image)
This image is the constant atomic force mode for observing the topography of a
specimen while keeping the repulsive force constant.
1.
Select the AFM radio button at the left bottom of the C
w indow.
2.
Click on the
3.
Click on the
4.
Click on the
• When you observe a force image
You can observe a force image (atomic force image) by obtaining the movement of
the cantilever as an image while keeping the distance between the cantilever and the
specimen constant.
5.
Select the AFM radio button at the left bottom of the Contact Mode tab
window.
6.
Click on the
7.
Click on the
8.
Click on the
When observing a force image, you keep the height of the cantilever constant and
usually observe the image performing a slow feedback. Select a slower response for
the feedback than that used for observing a topography image.
5-84
button in the Loop Gain selection box and select 8 from the
button in the Source 1 selection box and select Topography.
button in the Source 2 selection box and select None.
button in the Source TOPO selection box and select 1.
button in the Source 1 selection box and select Force.
button in the Source 2 selection box and select None.
button in the Filter [Hz] selection box and select 0.5 or less.
ontact Mode tab
TMPM5200-2