５
MEASUREMENT OPERATION
•
Source Gain
TMPM5200-2
5-187
The same as that in the AC-AFM tab window.
•
STM
ect this radio button. Measurement
•
CI
SPS Mapping scan mode in the advanced operation mode. The measure-
ment pixels of this mapping are 128
×
128. The measurement images appear as
follows:
When you perform normal measurement, sel
settings follow the current settings.
TS
When you perform CITS (Current Imaging Tunneling Spectroscopy) measurement,
select this radio button. This corresponds to performing I-V mapping measurement
under the
Topo
image
Current
image
Current
ge
”
ima
”
”
”
”
”
”
”
”
You
e I-V measurement from the I-V
setting by selecting this radio butto
, the image measurement clock is
emp
rement loc
rement settings are similar to I-V
settin
are some parame-
ters that cannot be changed
in: 0.10
V/nA
(unchangeable)
Number of accumulation:
1 (unchangeable)
rement
points:
128
(unchangeable)
•
I-V
ou perform the I-V Curve measurement.
set from the advanced opera-
tion mode. The default values are as follows:
Clock:
Fast
Lamp
direction:
Automatic
Source
signal: Linear
current
Preamplifier
gain: 0.10
V/nA
Number of accumulation:
1
Measurement
points:
128
”
”
”
”
can set the bias-voltage change-width of th
n. In addition
loyed for the measu
c
k. Other measu
gs that are set from the advanced operation mode, but there
.
Lamp
direction:
Automatic
(unchangeable)
Source signal:
Linear current (unchangeable)
Preamplifier
ga
Measu
Curve
Select this radio button when y
You can set the bias-voltage change-width and the number of accumulation of the
I-V measurement from the I-V setting by selecting this radio button. Other meas-
urement settings are similar to the I-V Curve settings
