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MEASUREMENT OPERATION
5-140
TMPM5200-2
opens.
2.
Click on the I-V button.
The I-V Parameters window
4.
ing procedure.
a.
and enter —1 using the
keyboard.
b.
Double-click on the input box for High Voltage/V and enter 1 using the
keyboard.
In this system, the offset current is capacitance-corrected in such a way that
when the input voltage is 0 V, the current is 0 nA. Therefore, the Low and High
Voltages must be entered so that they encompass 0 V.
5.
Click on the Scan button.
3.
Specify the I-V measurement parameters.
Specify the voltage range to perform the I-V measurement according to the
follow
Here, as an example, we will explain how to set the I-V measurement range to –1.0
V to +1.0 V.
Double-click on the input box for Low Voltage/V
Scanning is performed and the following will be displayed.
Current
image
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Topo
image
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Current
image
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Acquiring
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When Auto Grab in the STM tab window is selected
When acquisition is finished, the image is automatically grabbed and stored.
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When Auto Grab in the STM tab window is not selected
To acquire an image, click on the Grab button while it is being scanned.
When one image has been scanned, it is grabbed in the memory. At the same time,
the measurement image is automatically stored as a temporary storage file in the
specified program folder. Acquisition is repeated while you do not click on the Grab
button and the acquisition images during repetition are not grabbed.
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The image is displayed after the offset for the input signals is automatically computed.
You can control the offset for the input signals only in the Advanced operation
mode.
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an image
