JEOL JSPM-5200 Instructions Manual page 236

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Pre-scan Setting
Selec ting Pre-scan Setting from the SPM Scan menu opens the Pre-Scan Setting window,
in w hich you can specify parameters for pre-scan measurement. The pre-scan will be
perfo rmed when you
Param eters window.
In pr e-scan measurement, 32 × 32 points will be measured in the specified scanning area.
Then the source signal gain and offset voltage will be calculated. If you perform pre-scan,
since the amount of change in the source signal is calculated for the whole measurement
area, you can obtain measurement images under optimum conditions.
You can specify independent values as pre-scan parameters to each AC-AFM, Contact
AFM, and STM. You can select parameters from three kinds of parameters according to
scan size.
Measu
Select such parameters that slow scans can be performed to avoid contact between
the tip and the specimen during pre-scan.
TMPM5200-2
have checked the Enable Pre-Scan check box in the SPM
rement data is not displaye
５ MEASUREMENT OPERATION
d on the screen during pre-scan.
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