5
MEASUREMENT OPERATION
TMPM5200-2
5-181
■
Referen
Set a
signal that is used in the feedback.
The feedback circuit of the SPM controller operates around the set value for the
refer
At AC AFM mode
•
AC
ce
target value (reference value) for the reference
ence signal, which differs depending on the measurement mode.
-AFM/ Magnetic Force measurement / Viscoelasticity
measurement tab windows
The reference signal becomes the RMS signal in AC mode and the FMD signal in
FM mode, respectively. Specify each signal voltage within the range of 0 to
−
10 V.
•
Surface potential measurement tab window
In the surface potential measurement, both reference and bias voltage settings
appear because the bias voltage control is
ou can specify the bias voltage
up to
±
10 V.
required. Y
At Co
•
Co
m
Th
of
ntact AFM mode
ntact AFM/ Viscoelasticity
measurement / Lateral-modulation measurement FFM
easurement tab windows
e reference signal is the Forth signal. Specify the reference voltage within the range
±
10 V.