JEOL JSPM-5200 Instructions Manual page 244

■ Referen
ce
Set a target value (reference value) for the reference
The feedback circuit of the SPM controller operates around the set value for the
refer ence signal, which differs depending on the measurement mode.
At AC AFM mode
• AC
-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
up to ± 10 V.
At Co ntact AFM mode
• Co
ntact AFM/ Viscoelasticity measurement / Lateral-modulation measurement FFM
m easurement tab windows
Th e reference signal is the Forth signal. Specify the reference voltage within the range
± 10 V.
of
TMPM5200-2
５ MEASUREMENT OPERATION
signal that is used in the feedback.
required. Y ou can specify the bias voltage
5-181