JEOL JSPM-5200 Instructions Manual page 225

５ MEASUREMENT OPERATION
■ Grabbing data in computer me
The image that is being scanned and the I-V data are cleared when next scan starts
following is the procedure for grabbing the data in the c
The grabbed data will be written in the RAM and also temporarily stored in the
folde
winspm32.exe file). The temporarily stored data is cleared when the SPM software
is started next time.
1.
When data that you want to save is obtained, click on the Grab button in the
Scan frame of the SPM Parameters
while
2.
W hile the Grab button is active by clicking on it, the image data is norm
a fter scanning of one image completes, and the Title dialogue box opens,
p rompting you to enter an image name (title). Enter the title using the
keyboard.
3.
T he image data will be stored in the computer me
conti
4.
Then
computer memory following steps 1 to 3 above.
5.
After fin
t hat you want on a disk.
Difference between the image that appears during scanning and the grabbed image
Sometimes there is a large difference between the image that appears during
scanning and the image that is grabbed. This is because during scanning, the
brightness and contrast of each acquired line are adjusted based on the highest and
lowest values in each line, whereas when the image is grabbed the brightness and
contrast are computed based on the highest and lowest values over the entire screen.
Consequently, if there are steps in the image, or the Z-axis movements, the grabbed
image will be quite different from the scanned image.
This phenomenon often occurs during observation at high magnification, particu-
larly in the contact mode. It is thought that this is because the bending of the
cantilever occurs during scanning. For this reason, carry out the Reference/V
adjustment very carefully.
5-162
mory
r specified by the SPM software (a tmp folder that is in the folder that has the
the scan is in progress.
The title is not a file name used for transferring the data to and from the disk,
but is simply an image title used for identification and selection of the data.
There fore, an easily understandable name is preferable.
nue the scanning, click on the Repeat button in the Scan frame again.
, the next image will be scanned. Grab (store) the image data in the
ishing the observation, retract the tip, and then save the image data
omputer memory.
w indow. Be sure to click on the button
mory. If you want to
. The
alized
TMPM5200-2