JEOL JSPM-5200 Instructions Manual page 110

Obse rve the topographical image of a specimen surface using the AC mode, and confirm
that you can obtain a good image. Then retract the tip by clicking on Retract On.
■ Setting
the lock-in amplifier
Model 72 65
1.
C lick on the Lock-In button to open the Lock-In Amplifier window.
2.
Chec
syste
3.
Specify the parameters according to the following table:
4.
Click on the Retract Off button.
5.
Click on Auto Sensitivity in the Lock-In Amplifier window.
Doing this automatically adjusts the gain of the lock-in amplifier.
6.
Click on Auto Phase in the Lock-In Amplifier window.
Doing this adjusts automatically the phase of the lock-in amplifier
Model 5110
1.
Turn on the POWER switch of the lock-in amplifier (see Section 5.2.5,
"Lock-In Amplifier").
2.
Set the lock-in amplifier as follows:
a.
Press the A button of the Input selection switches.
b.
To put the Amplifier into the FLOAT state, press the FLOAT/GROUND
button of the Input selection switches.
TMPM5200-2
k the Connect box to connect the amplifier to the SPM controller. The
m waits about a second for the parameters t
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.
Sensitivity
Time Constant
Ref. Phase
Ref. Frequency
Output
Frequency/kHz
Amplitude/V
５ MEASUREMENT OPERATION
o be initialized.
10 mV
5 ms
0.000
F
Acos・Asin
40.000
1.000
.
5-47