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4.
Derivative: Scale factor for the derivative term in the PID feedback controller.
5.
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.
3.2.2.5 Display
There are several options for changing the appearance
of the images displayed in the Scan window. They are:
1.
Left Image: The source of the image displayed in
the left image window.
2.
Right Image: The source of the image displayed
in the right image window.
3.
Background: When Line Leveling is selected, the
background is subtracted from the image one line
at a time.
4.
Display: Two types of displays may be selected:
Color Map and Light Shaded.
5.
Image Add: This function allows the user to over-
lay the left and right images while scanning. The
opacity may be adjusted by the % value.
Source of signals displayed in the "Display Left/Right" drop down boxes
Z ERR
Setpoint
Comparator
V 1.1 / LS-AFM Users Guide
Z DRIVE
GPID
Non-Vibrating
Signal
Vibrating
Signal
Phase/Amplitude
Demodulator
Z AMP
Z PHASE
Z SENSE
Strain Gauge
Z Piezo
H.V. Amp
Light Lever
Photo-Detector
T-B
L-R
T+B
Section 3-9
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