button in the Number of Points selection box, and then
select 128 from the pull-down menu.
This specifies the number of points for I-V measurement. The possible number
is up to 2048 points.
g.
Click on the
button in the SPS ode selection box and select I—V from
the pull-down menu.
11.
Click
The I–V measurement is set to the specified SPS mode.
The foregoing are typical settings of SPS Parameters.
button in the Acquisition selection box, and then select
le SPS from the pull-down menu.
Sing
12.
Click on the Repeat button on the Advanced tab window of the SPM
Parameters window.
The I-V measurement will start. When you want to change the I-V display method,
change it after grabbing the data by using the Plot parameters item of the Display
menu in the main menu bar.
If the measurement position is changed with this method, the changed position
becomes the initial position. Therefore, when scanning has been finished or
Abort has been performed, the cantilever tip is at the initial position.
When measurement result is saturated
If the I-V measurement data is saturated as shown in the figure below, decrease the gain
specified for Preamp Gain on the SPS Parameters window.
Dec
p Gain of the SPS Parameters window.
measurement point or unreasonable data is
obtained, the cantilever might be irregularly bent due to an electrostatic force during
the measurement. In such a case, try to reduce the I-V scanning voltage range.
Changing parameters during I-V measurement might cause errors for data that you
grabbed. If you want to change parameters, do it while the measurement is sus-
pended.
If no stable data is obtained at the same
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