Image Window; Z Feedback; Display; Tip Retract - AFM Workshop TT-AFM User Manual

Page 12
3.2.2.4. Z Feedback
All of the parameters for maintaining Z feedback are
provided here. The parameters are: ,.
"Gain": Scale factor for the feed,back control signal.
"Proportional": Scale factor for the proportional term in the
PID feedback controller.
"Integra/": Scale factor for the integral term in the PID
feedback controller.
"Derivative": Scale factor for the derivative term in the PID
feedback controller.
"Setpoint": Parameter that controls the magnitude of
interaction between the probe and surface.
Caution: If the
"z
Feedback" parameters are
too high, the
Z
ceramic can begin to oscillate
and potentially cause damage to the ceramic.
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3.2.2.5. Display
DisI'Ja~j_
There are several options fOf changing the appearance of
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the images displayed in the "Scan" window. They are:
Right
Image
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"Left Image": The source of the image displayed in the left
f
image window.
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. . . .
Background
fLi"~;C;;;;-;g~
. Displa~ Light Shaded
"Right Image": The source of the image displayed in the
right image window.
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Pallet Pall"t 1
"Background": When "Line Leveling" is selected, the
background is subtracted from the image one line at a
time.
•
"Display": Two types of displays may be selected: "Color
Map" and "Light Shaded."
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3.2.2.6. Tip Retract
C~nt[Q1
.
After scanning a sample, this function is used to move the
j .~Qp.
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r'~~~~~
tip away from the surface. The "Tip Retract" function
Complete
should always be used to assure that the probe does not
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i
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Start'·
get damaged after scanning.
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i'
I
Stop'
3.2.2.7. Control
.j
i
~-
I-E-~i-t
.-,
,
These functions start a scan, stop a scan and exit the
AFM-View software.
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,
It
I
Load T-APp rc11
4
Z Feedback
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