JEOL JSPM-5200 Instructions Manual page 146

■ Setting the scanni
Before carrying out an approach operation, set the scanning parameters including the
scanning area in the Contact Mode tab window. Although the values of these parameters
differ depending upon the specimen and the purpose of use, rough values are as follows.
Scan Size
Click on the Scan Size selection box. When the numerical value
highlighted, enter 1 um using the keyboard and finalize the numerical value
by pressing
tion box and select a numerical value near 1,000 nm.
Clock/m s
Click on the
This is the parameter that determines the scan speed. Naturally, this parameter
should be changed accordi
specimen.
Reference
Double-click on the Reference box to highlight the numerical value and enter
0 using the keyboard; then determine 0 by pressing the Tab key on the
keyboard.
Reference is used to specify the force acting between the specimen and the cantile-
ver tip. Change the value while observing the image, but now set it to 0.000 provi-
sionally.
Filter/Hz
Click on the
pull-down menu.
Filter/Hz is the parameter that determines the response speed of the feedback circuit.
The larger the set value is, the faster the response speed becomes, thus producing a
sharp image, but the feedback circuit easily oscillates. Usually, set the highest speed
at which the feedback circuit does not oscillate while watching an image during
scanning.
TMPM5200-2
ng parameters
the T ab key. Or, click on the
Here, Scan Size differs depending on the scanner in
appropriate value according to the observatio
button in the Clock/ms selection box and select 100.00 us.
button in the Filter/Hz selection box and select 1.0 from the
button in the Scan Size selec-
n area.
ng to the observation area and the unevenness of the
５ MEASUREMENT OPERATION
stalled. In practice, set an
is
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