Automated Tip Approach; Topo Scan Window - AFM Workshop LS-AFM User Manual

CAUTION: Before activating the Range Check function, make sure that the
probe is moved away from the sample surface. If the probe is too close to
the surface, the probe may be damaged.

3.2.1.7 Automated Tip Approach

The Automated Tip Approach button starts
the process of the probe moving toward
the surface. A woodpecker motion is used,
which results in noticeable clicking sounds
from the microscope stage. This sound is
from two sources: the stepper motor being
energized and the Z piezoelectric ceramic
being retracted. When the system is
engaged in feedback, the Open Loop button
will light up and say "In Feedback."
A small Adv button on the far right of the Z
Drive range allows advanced users to manu-
ally manipulate tip approach, by altering the
setpoint and jogging the Z motor. This can
achieve a lighter feedback for high resolution
scanning. See section 6 for more information
on high resolution scanning.

3.2.2 Topo Scan Window

After the Pre-Scan functions are ready, the Topo Scan window is used for measuring AFM
images.
V 1.1 / LS-AFM Users Guide
Section 3-5