5-42
TMPM5200-2
■
Observ
Obse
then
■
Setting the
Model 72
Amplifier window.
ing a topographical image
rve the topographical image of a sample; make sure that the image is satisfactory;
click on the Retract On button to retract the tip.
lock-in amplifier
65
1.
Click on the Lock-In button to open the Lock-In
2.
Check the Connect box to connect the amplifier to the SPM controller. The
system waits about
parameters to be initialized.
If an error message appears, be sure that the power supply is on, the cables are
connected securely and the Device Setup window is properly set.
3.
Specify the parameters according to the following table:
a second for the
Sensitivity
1 mV
Time Constant
5 ms
Ref. Phase
0.000
Ref. Frequency
F
Output
Acos
・
Asin
Frequency/kHz
20.000
Amplitude/V
0.200
4.
Click on the Retract Off button in the VE-AFM tab window.
5.
Click on Auto Sensitivity in the Lock-In Amplifier window.
au matically adjusts its gain.
6.
The lock-in amplifier to
Click on Auto Phase in the Lock-In Amplifier window.
The lock-in amplifier automatically adjusts its phase.
