5
MEASUREMENT OPERATION
TMPM5200-2
5-191
its polarity. Change the polarity depending on the situation that the bias
voltage applies to the tip or specimen.
•
Lock-in-AMP signal
Change the reference signal, which is necessary for feedback, to the Lock-in
amplifier.
A
−
B/A
+
B:
Outputs the A
−
B/A
+
B signal to the Lock-in amplifier
.
FMD:
Outputs the frequency detection (FMD) signal to the Lock-in
amplifier.
•
Filter/kHz
Set the feedback filter for the KFM feedback.
•
Gain
Set the gain (loop gain) for the KFM feedback.
•
Offset
Set the DC offset voltage that is applied to the tip.
•
CPD Polarity Reverse
If you check this check box, the CPD signal from the AFM amplifier is output,
reversing
Control window, which sets the extended
ary for measuring surface potential. Details on setting
•
Lock-in amplifier setting button
This button opens the Lock-in Amplifier
lock-in amplifier that is necess
the lock-in amplifier will be provided later.