© ICSPI Corp. 2007-2021
nGauge AFM User Manual 2.0
56
8.1.1.
Drive Frequency
When the advanced controls are displayed, the drive frequency can also be set by clicking the
sweep graph at the desired frequency. When the cursor hovers over the amplitude or phase
graph, the drive frequency, amplitude and phase will be displayed.
8.1.2.
Cantilever Drive Amplitude
The
Cantilever Drive Amplitude
controls the amplitude of the driving signal applied to the Z
actuator. This can be thought of as the tip oscillation amplitude. Increasing this value will
increase the tip oscillation amplitude. Default value is 35%.
Different chips may require different cantilever drive amplitudes.
8.1.3.
Manual Sweep Controls
The manual sweep controls are not required for normal operation of the nGauge. They are
mainly provided for performing AFM research only and should only be changed by advanced
users.
Parameter
Description
Start Frequency
The frequency at which you would like to start a manual frequency sweep
Stop Frequency
The frequency at which you would like to stop a manual frequency sweep
Step Size
The step size, in hertz, that the manual frequency sweep will increment.
Step Size determines the number of data points in the results.
Total Number of
Steps in Sweep
The number of steps in the sweep routine.
